Unsolved Mysteries in Aging

Unsolved Mysteries in Aging
Unsolved Mysteries in Aging

? The Author 2015. Published by Oxford University Press on behalf of The Gerontological Society of America.

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Public Policy & Aging Report, 2015, 25, 67–73

doi:10.1093/ppar/prv006

Article

Unsolved Mysteries in Aging Policy

Debra Bailey Whitman, PhD*

AARP, Washington, DC, USA

*Address correspondence to Debra Bailey Whitman, PhD, AARP, 601 E Street, NW, Washington, DC 20049, USA. Manuscript received February 24, 2015; accepted March 10, 2015.

Decision Editor: Robert B. Hudson, PhD

Key words: WHCOA, Retirement sa vings, Older workers, Socia l Security, Long-term services a nd supports, Advanced illness, Fraud and abuse, Diminished mental capacity.

Introduction

The aging of American society is an opportunity for our country. An older population can contribute greatly in all walks of life. But to make the most of this opportunity, we must address an array of challenges that can make it harder to stay independent and productive.

I sometimes think of these problems as mysteries because they have proven so hard to solve.

They do have solutions, of course, and I attempt to offer a few of my own. But arriving at them will require fresh thinking and a crosscutting approach. They also require a willingness from policymakers and political leaders to take on difficult issues and openness to both new ideas and even some compromise by advocates and other stakeholders.

This year’s White House Conference on Aging (WHCOA) highlights four major needs of an older popula-tion: retirement security, long-term services and supports (LTSS), healthy aging, and elder justice. I believe we will make the most progress toward these critical goals if poli-cymakers keep a few things in mind:

?Strategies to support an older population should be crosscutting and mutually reinforcing. People do not live their lives inside silos. The overarching goals of financial security, health, and personal well-being are linked in countless ways.

?Policies also must address the individual’s full life span.

Supports in younger years, including access to good schools, wholesome food, and health care, can pay off for a lifetime. Working-age policies that enhance savings or promote continuing education can help into old age.

?Progress in the areas highlighted by the White House

will benefit not only older people but also entire families

and the nation. Policies that help parents and grand-

parents also help their children and grandchildren.

Harnessing the societal contribution of older Americans

can also boost productivity in our economy.

Below I offer eight policy mysteries and link them to the

issue areas designated by the WHCOA. To have the health-

iest, most productive older population possible, we need to

make progress in all these areas. Readers are encouraged to contribute their insights on how to solve them.

WHCOA Issue: Retirement Security

Mystery: How Can We Encourage More People to

Save More for Retirement?

Remember when people used to talk about the “Golden Years?” These days, most people’s retirement finances

would not even merit a bronze. Almost half of people over

age 55 have saved less than $50,000 (Employee Benefit Research Institute and Mathew Greenwald & Associates, 2013). No wonder so many people worry that they will run

out of savings before they die.

Many younger workers do not save—either because

they cannot afford to or they think they cannot afford

to. But the real problem is that we are failing to encour-

age those who can save to set aside even a small amount

each month.

Employers that offer retirement savings plans are a

big part of the answer. And employees need to participate

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throughout their working lives so they can build up mean-ingful nest eggs. The current retirement savings system is voluntary for employers, and too many fail to help prepare their workers for their futures. Nearly half of private-sector employees do not have access to a retirement savings plan (John & Koenig, 2014).

Employers can make it easy to save. Behavioral science has shown that plans with automatic enrollment increase employee participation, and those with auto-escalation of contributions help people save more over time (Thaler & Benartzi, 2004).

Policy proposals to promote workplace savings, such as state-based Work and Save plans or Automatic Individual Retirement Accounts, cannot come soon enough for the Baby Boom and Gen X. So it is heartening to see a growing number of states exploring ways to make sure all their citi-zens can easily save for their future through their paycheck.

People who struggle the most to put aside their hard-earned salary should get the help they need. In 2013, the top 20% of working-age households held two thirds of all retirement savings assets, and the bottom 50% owned less than 8% (Miller, Madland, & Weller, 2015).

Reforming our tax code by expanding incentives for lower-income workers or providing a more generous or a refundable Saver’s Credit would go a long way to help low-income workers build up a nest egg.

Beyond that, we need to raise public awareness that sav-ing matters, and the earlier you start the better you will end up.

Mystery: How Do We Encourage People to Work Longer While T aking Care of T hose Who Cannot? Working longer can be an effective self-help program for people who lack a nest egg. Older workers who stay in the labor force can build up savings instead of draining them. They reduce the length and cost of retirement. And they can more easily hold off claiming Social Security, leading to a larger monthly payment when they do retire.

An Urban Institute study found that working just one more year could increase retirement income by 9%. Five more years of work could increase retirement income by 56% (Butrica, Smith, & Steuerle, 2006).

Holding off Social Security claims can add up to thou-sands of dollars each year because benefits are reduced when claimed early. Taking benefits at age 62, for example, reduces annual benefits by 25% compared to holding off claiming until a full retirement age of 66 (Social Security Administration, 2014b). Yet a great many workers—two out of five men and almost half of women—claim benefits as soon as they can quality at age 62 (Wasik, 2014).

Employers can help older workers stay connected to the labor force by making education and training opportunities available to workers of all ages. They also should offer more policies that respond to the needs of older workers, such as

flexible schedules and phased steps toward retirement.

Older workers can help themselves by living healthy life-styles, embracing lifelong learning, and doing all they can

to keep up with innovation and change in the workplace.

But not everyone has the opportunity or the ability to

work longer. Health problems, the need to be a caregiver,

age discrimination, and the physical demands of a job all

can stand in the way.

Policies are needed to make sure this group is treated

fairly. Targeting our workforce development system

to better assist older workers, as was done in the most

recent reauthorization of the Workforce Innovation and Opportunity Act, is an important step in the right direc-

tion. Age discrimination cannot be tolerated. It is not only

unfair to individuals but also harmful to the economy. We

also should explore ways Social Security retirement or dis-

ability benefits can be modified to protect older adults who

cannot continue working but may not meet the strict eligi-

bility requirements for benefits.

While it is important that we encourage work at older

ages, it is critical that we establish an adequate safety net

for those who cannot.

Mystery: How Do We Create a Social Security

System T hat Meets the Country’s Needs for the

Next 80 Years?

As we celebrate the 80th anniversary of Social Security,

there is a lot of news about the long-term fiscal imbalance

and the projection that the Trust Funds will be exhausted

in 2033 (Social Security Administration, 2014a). But the

talk of solutions needs to move beyond an accounting exercise matching the incoming revenues with the outgoing

benefit payments. We need to look more comprehensively

at what type of social insurance program can best meet

the retirement, disability, and survivorship needs of future generations.

Let me be clear, I believe that Social Security is one of

the greatest programs we have to provide income security

to older or disabled Americans and their families. Without

it, 22 million Americans, including many children and

young adults, would live in poverty (Waid, 2014).

However, Social Security was created 80 years ago, a

time when mothers rarely worked, divorce was relatively uncommon, and life expectancy at age 65 was about six

years shorter than it is today. So it is no surprise that the system requires some modernizing.

Even with its success, Social Security benefits are often inadequate and inequitable Widows often face a radi-

cal drop in income when a spouse passes. Workers who

take time out of the paid workforce to care for ailing

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family members lose Social Security credits and end up with smaller benefits. The oldest beneficiaries often have extremely low benefits, as do individuals who work for many years in low-paying jobs.

Rising inequality and stagnant wage growth have signif-icantly undermined the financing of the program. And the diversity of life expectancy across socioeconomic groups has had a major impact on the amount individuals can expect to receive in benefits over their life span. An hon-est conversation about the future of Social Security should take all of these issues into consideration.

Going forward, Social Security will remain the founda-tion of retirement security in our country. The challenge of developing a Social Security system for the next 80 years is not mathematical; it is about political will. Our nation needs a forthright debate that stays focused on preserving Social Security’s essential role in the well-being of American families. As difficult as it may be, the sooner that we solve this mystery, the better so that families have time to adjust to any changes.

WHCOA Issue: LTSS

Mystery: How Will We Pay for the LTSS Needed by an Aging Population?

There is no escaping the fact that in the future, demand for LTSS will soar. One study found that 70% of those who turned 65 in the year 2005 would need some form of LTSS before they die (Kemper, Komisar, & Alecxih, 2005/2006).The Congressional Budget Office has projected that spending on LTSS for the older population, which is now 1.3% of the economy, could jump to 3.3% by 2050 (Congressional Budget Office, 2013).

Let us define LTSS broadly. People with chronic conditions and impaired mobility seek an array of supports and services to achieve the goal of staying independent, which is the over-whelming preference. These can include everything from home modifications and transportation to daily tasks like housekeep-ing and meal preparation to personal care. A smaller number of people with more intense needs may require residential care in a nursing home or assisted living facility.

The financial challenge is how to pay for all of these needs.

The current financing system is just not working. Those who need care often quickly run through a lifetime of savings and impoverish their spouses and their families. Already, LTSS for people of all ages accounts for almost

one third of Medicaid expenses (Eiken, Sredl, Saucier, & Burwell, 2014). Meanwhile, private, long-term care insur-ance continues to struggle in the marketplace for a variety of reasons, and premiums are rising fast.

The Affordable Care Act tried to help people pay for these services through the CLASS Act. But the initiative was eventually dropped, over concerns that it was not financially viable over the long term.

Research suggests there may be economies in shifting resources away from nursing homes and toward services that help people stay in their own homes. AARP’s Public Policy Institute found that on average, you can support three people in their own homes for the same cost as keeping one in a nursing home (Reinhard, Kassner , & Houser , 2011).Congress has authorized several options for states to serve more Medicaid beneficiaries through home- and community-based services, but progress toward this goal has been extremely uneven. According to AARP’s State Scorecard on LTSS, the five top-ranked states dedicate 62.5% of their Medicaid LTSS dollars to home- and com-munity-based services, but the lowest-ranking five only devote 16.7% (Reinhard et al., 2014).

Any discussion of LTSS must recognize the role of fam-ily caregivers, whose heroic and unpaid efforts help keep the whole system afloat. AARP has estimated the economic value of this invisible army was $450 billion in 2009 (Feinberg, Reinhard, Houser, & Choula, 2011).

Yet projections are that the ratio of caregivers to older persons at risk of needing help will decline in the future, putting greater pressure not only on family members but also on private services and public programs, as well (Redfoot, Feinberg, & Houser, 2013).

We currently spend hundreds of billions of dollars on a fragmented system that fails to meet the needs of too many people. We need fresh thinking about how to structure the public and private financing of LTSS.

The marketplace is beginning to offer more options that enhance the independence of people with disabilities of all ages, including integrated approaches that encompass housing, social services, personal care, and health care. Advances in information and monitoring technologies could pay off with more choices for consumers and signifi-cant economies for our society.

Whatever policies are implemented, we must make sure older Americans will be treated with dignity, even as we seek to economize on spending.

Mystery: How Will Our Country Get the

Workforce T hat Is Needed to Support a Vastly Larger Aging Population?

An older U.S. population will require the services of a much larger workforce with a broad assortment of skills

The challenge of developing a Social Security system for the next 80 years is not mathematical; it is about political will.

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and specialties. This will include more geriatricians, nurses, psychologists, social workers, pharmacists, physical ther-apists, care coordinators, home health aides, and other direct care workers. You name it.

But where are they all going to come from?

Society must make a higher priority of expertise in aging, and that includes compensation of workers.

Teachers are needed to educate and train all these workers. And we need more young people who want these jobs. Part of the argument is that investments in education and training can pay off for society—not only by providing needed skills and helping people but also by stirring economic growth.

I also believe that payment and delivery reforms in health care, designed to encourage coordination and teamwork, will increase the demand for some of these occupations, such as specialists in health information technology.

But market forces are only part of the answer. An impor-tant policy goal is to adjust scope-of-practice rules in health care and to eliminate improper restrictions on advanced practice nurses and all health care professionals, so they can play a larger role in primary care and care coordination. Throughout the country, states should modernize laws and regulations that improperly restrict nurses and other clini-cians from providing care they are qualified to offer.

Universities should offer more geriatric education, across a whole range of fields: medical, psychiatric, and social work to name a few. Finally, we need better career paths for paraprofessional direct care workers. Part of this requires training, educational incentives to facilitate advancement and adequate salaries, and health benefits. These workers also deserve protections because their jobs can be demanding.

WHCOA Issue: Healthy Aging

Mystery: How Can We Support Individuals and Their Families With Advanced Illness?

The end of life may seem an odd topic to include in a dis-cussion of healthy aging. But however you categorize this mystery, we need to find a way to talk about advanced illness. To have a truly patient-centered health care sys-tem, individuals’ wishes must be honored to the very end. People want to live life with meaning and dignity until the day they die, not just until they are diagnosed with an advanced illness.

The Coalition to Transform Advance Care—of which AARP is a member—defines advanced illness as one or more conditions serious enough that general health and functioning decline, curative care is less effective, and pal-liative care to treat the psychosocial and other needs of the patient is recommended—a process that continues to the end of life.

While the trajectory of advanced illness ultimately leads

to death, it can last for years or for only a few months.

Yet, research shows that well-developed and administered advanced illness management programs not only improve

the patient’s quality of life but also reduce the use of unnec-

essary clinical treatments and hospital admissions, reduce aggregate spending, and provide comfort while reducing

stress for the patient and family (Novelli & Koutsoumpas, 2015).

Patients and families facing advanced illness want and

need seamless, person-centered, coordinated care that

helps them live as happily, comfortably, and productively

as possible. They—and family caregivers—should have all

the information they need to make informed decisions. The

type and level of care provided should be consistent with

the wishes and values of the person receiving the care and

his or her family.

While our health care system is technologically capable

of delivering such care, many people who are in a state of advanced illness do not receive it. Too often, the end of life

is a time of helplessness, pain, and uncomfortable treat-

ments that many people do not even want. I was working

in the Senate when we tried to address the need for greater understanding by paying doctors for patient-initiated con-versations about their concerns, questions, and wishes if

grave illness advances in the Affordable Care Act. Yet this modest provision galvanized opponents of the bill, who described such voluntary conversations as “death panels.”

The irony is that when you consider this challenge through the eyes of patients or families, end-of-life plan-

ning is not controversial at all. People want to make sure

the health care system respects their needs and preferences,

even if they lose the ability to communicate with a doctor.

Research has shown that 80% or even more of termi-

nally ill patients would prefer to die in the comfort of home (Dartmouth Atlas of Health Care, 2012). Further, people

seek a range of medical and palliative options to choose

from. They want to make informed decisions, and they

want providers to be sensitive to their personal and cul-

tural values.

As a society, we can help patients achieve these goals

by making the following options more effective and more available:

?Advanced directives or living wills—in which people

declare their preferences for treatment—can be impor-

tant tools. But most people do not have them. When

they do, doctors do not always follow them or even

know they exist.

?Conversations between doctors and patients and fam-

ily caregivers about end-of-life decisions can be invalu-

able. Even if elected leaders one day agree to reimburse

doctors for such voluntary counsel (as I believe they

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will), many doctors do not know how to conduct such conversations.

?Palliative care, which aims for comfort and quality of life, including easing of pain, should be available for those who need it. Yet hospitals frequently do not offer it, and reimbursement policies may encourage other treatments, even when they provide little chance of a cure.

Whatever strategies society embraces must ensure that peo-ple never end up in situations where they are influenced to make decisions they do not fully comprehend or agree with. And we need to respect concerns of disability advo-cates who fear that some lives may be valued less than oth-ers in end-of-life health care policies.

While solving the mystery of providing effective and compassionate advanced illness care is important to patients and their families, we should also recognize that it affects everyone, imposing emotional and financial burdens on families, friends, coworkers, and society.

It requires a comprehensive approach that goes well beyond a medical model. Yes, we need to identify and implement proven clinical models of care, but we also need to engage the public, patients, and families and car-egivers in the conversations; expand the role of the faith community and spiritual leaders; educate clinicians and other professionals in communication and interpersonal skills; implement legislative and regulatory change at the federal and state levels; and help employers learn how to best support employee caregivers as they navigate between caring for their loved ones and managing their workplace responsibilities.

We have made much progress in caring for people with advanced illness. But as our society ages, we must build on that progress to ensure that all people with advanced illness, especially the sickest and most vulnerable, receive comprehensive, high-quality, person- and family-centered care that is consistent with their goals and values and hon-ors their dignity.

WHCOA Issue: Elder Justice

Mystery: How Do We Better Protect Older Adults From Fraud and Abuse?

F raud and exploitation against seniors harm millions of people, costing them billions of dollars in lost income and assets, and robbing them of their dignity. Fraud comes in many forms: online rip-offs, telemarketing scams, iden-tity theft, and fraudulent and unsuitable investments. Exploitation can take many forms, as well: misuse of joint accounts, power of attorney abuse, and diversion of funds by caregivers or fiduciaries. The list goes on.

Older victims are less likely than young people to report crimes. An AARP F oundation survey of fraud victims

found that only 25% of victims who were 55 and over reported the crime. That compared to 44% of younger people (Pak & Shadel, 2011). Victims of exploitation may

be even less likely to report the crime: A recent study found

that only 1 in 44 cases of fraud and financial exploitation is reported (Lifespan of Greater Rochester, Inc., Weill Cornell Medical Center of Cornell University, & New York City Department for the Aging, 2011).

Victims often feel too ashamed, or they fear that younger

family members will view them as no longer fit to manage

their own affairs. They also may not want to cause difficul-

ties or turmoil within their family or for others they once trusted, even when others betray them.

Changes in the aging brain may contribute to the prob-

lem of fraud by making older people less likely to spot suspicious warning signs, such as untrustworthy body lan-guage, according to research at the University of California,

Los Angeles (Wolpert, 2012).

We are also learning that certain segments of the older population are more prone to being victimized by certain

types of crimes. The AARP Foundation survey and other studies have found that investment fraud victims are more

likely male, affluent, and educated. Victims of identity theft

and lottery scams tend to be older and female, and have

lower incomes (Pak & Shadel, 2011).

Education is part of the answer. It should be aimed not

only at older adults but also at their whole community, especially younger family members and friends and neigh-

bors who can intervene to help older people.

But education is only part of the solution. Organizations

and individuals who are in a position to directly inter-

vene must also take responsibility to prevent wrongdoing. Financial institutions have an opportunity to play a crucial

part in preventing, recognizing, and reporting fraud and exploitation and should adopt new technologies to spot financial exploitation. To truly combat elder abuse, all of society should make a higher priority of protecting and supporting vulnerable older persons.

Mystery: How Can Society Best Deal With

Growing Numbers of People With Diminished

Mental Capacity?

As the number of older Americans increases, so will the number of people with cognitive impairments that affect

their ability to function independently.

People who struggle with cognitive issues are extremely vulnerable to abuse, to exploitation, and to all the conse-quences of impaired decision making. They are counting

on us to protect them, even if they no longer can express

the words.

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Yet society has not yet begun to figure out how to respond to diminished capacity in a careful, holistic way.

And unless we get some medical breakthroughs, this challenge is just beginning. A study at the Rand Corporation found that almost 4 million people age 70 and older have dementia—15% of that age group—and that the costs actually exceeded those of heart disease or can-cer (Hurd, Martorell, Delavande, Mullen, & Langa, 2013). Medicaid spending is 19 times higher for Medicare recipi-ents with dementia than for those without it (Alzheimer’s Association, 2015).

According to Rand, over 9 million Americans will suffer from dementia by the year 2040. And that understates the problem because those numbers are for people with severe conditions like Alzheimer’s disease (Hurd, 2013).

Diminished capacity in its varied degrees raises difficult questions about how to provide independence for individu-als living with dementia while providing the help they need when they need it. We also need to develop new ways to help families and communities care for those living with dementia.

The possibility of a growing population with dimin-ished capacity is a major reason we need to find ways to honor people’s needs and preferences, when they no longer can express them. And it underscores the importance of advance planning for older people, including designations of power of attorney for finances and health care.

We need to develop new models of care for individuals, families, and institutions that build on the capacity that peo-ple retain. It is important to recognize a person’s capacity is not all or nothing and that while some abilities are lost; others are retained and should be respected. A loved one may no longer be able to drive safely but still knows what she wants in her will. Or she no longer can decide between investments, but she still knows what health care is right for her. Systems and society need to support people’s control over their own lives to the maximum extent possible. I am a fan of the global movement toward creating dementia-friendly communities as an important step in this direction.

Linking the mysteries, we know that people with dimin-ished capacity are vulnerable to scams and exploitation, from strangers, from financial advisors, and even their own family members. Therefore, solutions to fraud and exploi-tation cannot be designed without considering these addi-tional vulnerabilities.

Conclusion

These are a just a few of the mysteries I have wrestled with over the years at AARP, in my work with Congress and in the Executive branch. And I bet I am not alone. I am sure that many of you are taking on mysteries in your own field or practice; I would love to hear your insights: What will it take to solve the mysteries you contend with?

Unfortunately, these challenges do not get the attention

they deserve even when good, practical solutions exist, and

I must admit, I am impatient to see progress. Clearly policy-makers, individuals, and even private companies need to do

more to help people adapt to increases in longevity and the challenges and potential benefits that aging brings to society.

While we hope for Presidential announcements of con-

crete action in each of these areas at the WHCOA, it is

certain that the conversation about how to improve our

aging society will continue long after this year’s event is

over. Please feel free to share your ideas. Working together

we can solve these mysteries.

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PCB生产工艺流程

PCB生产工艺流程 一.目的: 将大片板料切割成各种要求规格的小块板料。 二.工艺流程: 三、设备及作用: 1.自动开料机:将大料切割开成各种细料。 2.磨圆角机:将板角尘端都磨圆。 3.洗板机:将板机上的粉尘杂质洗干净并风干。 4.焗炉:炉板,提高板料稳定性。 5.字唛机;在板边打字唛作标记。 四、操作规范: 1.自动开料机开机前检查设定尺寸,防止开错料。 2.内层板开料后要注意加标记分别横直料,切勿混乱。 3.搬运板需戴手套,小心轻放,防止擦花板面。 4.洗板后须留意板面有无水渍,禁止带水渍焗板,防止氧化。 5.焗炉开机前检查温度设定值。 五、安全与环保注意事项: 1. 1.开料机开机时,手勿伸进机内。 2. 2.纸皮等易燃品勿放在焗炉旁,防止火灾。 3. 3.焗炉温度设定严禁超规定值。 4. 4.从焗炉内取板须戴石棉手套,并须等板冷却后才可取板。 5. 5.用废的物料严格按MEI001规定的方法处理,防止污染环境。 七、切板 1. 设备:手动切板机、铣靶机、CCD打孔机、锣机、磨边机、字唛机、测厚仪; 2. 作用:层压板外形加工,初步成形; 3. 流程: 拆板→ 点点画线→ 切大板→ 铣铜皮→ 打孔→ 锣边成形→ 磨边→ 打字唛→测板厚 4. 注意事项: a. a. 切大板切斜边; b. b. 铣铜皮进单元; c. c. CCD打歪孔; d. d. 板面刮花。 入、环保注意事项: 1、 1、生产中产生的各种废边料如P片、铜箔由生产部收集回仓; 2、 2、内层成形的锣板粉、PL机的钻屑、废边框等由生产部收回仓变卖; 3、 3、其它各种废弃物如皱纹胶纸、废粘尘纸、废布碎等放入垃圾桶内由清洁工收走。废手套、废口罩等由生产部回仓。 4、 4、磨钢板拉所产生的废水不能直接排放,要通过废水排放管道排至废水部经其无害处理后方可排出。钻孔 一、一、目的: 在线路板上钻通孔或盲孔,以建立层与层之间的通道。

PCB板制造工艺流程

PCB板制造工艺流程 PCB板的分类 1、按层数分:①单面板②双面板③多层板 2、按镀层工艺分:①热风整平板②化学沉金板③全板镀金板④热风整平+金手指 3、⑤ 化学沉金+金手指4、⑥全板镀金+金手指5、⑦沉锡⑧沉银⑨OSP板 各种工艺多层板流程 ㈠热风整平多层板流程:开料——内层图像转移:(内层磨板、内层贴膜、菲林对位、曝光、显影、蚀刻、褪膜)——AOI——棕化——层压——钻孔——沉铜——板镀——外层图像转移:(外层磨板、外层贴膜、菲林对位、曝光、显影、图镀、褪膜、蚀刻、褪锡)——丝印阻焊油墨——阻焊图像转移:(菲林对位、曝光、显影)——丝印字符——热风整平——铣外形——电测——终检——真空包装 ㈡热风整平+金手指多层板流程:开料——内层图像转移:(内层磨板、内层贴膜、菲林对位、曝光、显影、蚀刻、褪膜)——AOI——棕化——层压——钻孔——沉铜——板镀——外层图像转移:(外层磨板、外层贴膜、菲林对位、曝光、显影、图镀、褪膜、蚀刻、褪锡)——丝印阻焊油墨——阻焊图像转移:(菲林对位、曝光、显影)——镀金手指——丝印字符——热风整平——铣外形——金手指倒角——电测——终检——真空包装 ㈢化学沉金多层板流程:开料——内层图像转移:(内层磨板、内层贴膜、菲林对位、曝光、显影、蚀刻、褪膜)——AOI——棕化——层压——钻孔——沉铜——板镀——外层图像转移:(外层磨板、外层贴膜、菲林对位、曝光、显影、图镀、褪膜、蚀刻、褪锡)——丝印阻焊油墨——阻焊图像转移:(菲林对位、曝光、显影)——化学沉金——丝印字符——铣外形——电测——终检——真空包装 ㈣全板镀金板多层板流程:开料——内层图像转移:(内层磨板、内层贴膜、菲林对位、曝光、显影、蚀刻、褪膜)——AOI——棕化——层压——钻孔——沉铜——板镀——外层图像转移:(外层磨板、外层贴膜、菲林对位、曝光、显影、图镀镍金、褪膜、蚀刻、褪锡)——丝印阻焊油墨——阻焊图像转移:(菲林对位、曝光、显影)——丝印字符——铣外形——电测——终检——真空包装(全板镀金板外层线路不补偿) ㈤全板镀金+金手指多层板流程:开料——内层图像转移:(内层磨板、内层贴膜、菲林对位、曝光、显影、蚀刻、褪膜)——AOI——棕化——层压——钻孔——沉铜——板镀——外光成像①(外层磨板、外层贴膜、菲林对位、曝光、显影)——图形电镀铜——镀镍金——外光成像②(W—250干膜)——镀金手指——褪膜——蚀刻——丝印阻焊油墨——阻焊图像转移:(菲林对位、曝光、显影)——镀金手指——丝印字符——铣外形——金手指倒角——电测——终检——真空包装 ㈥化学沉金+金手指多层板流程:开料——内层图像转移:(内层磨板、内层贴膜、菲林对位、曝光、显影、蚀刻、褪膜)——AOI——棕化——层压——钻孔——沉铜——板镀——外层图像转移:(外层磨板、外层贴膜、菲林对位、曝光、显影、图镀、褪膜、蚀刻、褪锡)——化学沉金——丝印字符——外光成像②(交货面积>1平方米)/贴蓝胶带(交货面积≤1平方米)——镀金手指——铣外形——金手指倒角——电测——终检——真空包装 ㈦单面板流程(热风整平为例):开料——钻孔——外层图像转移:(外层磨板、外层贴膜、菲林对位、曝光、显影、图镀、褪膜、蚀刻、褪锡)——AOI——丝印阻焊油墨——阻焊图像转移:(菲林对位、曝光、显影)——丝印字符——热风整平——铣外形——电测——终检——真空包装(注:①因没有金属化孔,所以没有电测与沉铜板镀②外层线路菲林除全板镀金板用正片菲林外,其它都用负片) ㈧双面板流程(热风整平为例):开料——钻孔——沉铜——板镀——外层图像转移:(外层磨板、外层贴膜、菲林对位、曝光、显影、图镀、褪膜、蚀刻、褪锡)——丝印阻焊油墨——阻焊图像转移:(菲林对位、曝光、显影)——丝印字符——热风整平——铣外形——

线路板工艺流程

电路板工艺流程 一.目的: 将大片板料切割成各种要求规格的小块板料。 二.工艺流程: 三、设备及作用: 1.自动开料机:将大料切割开成各种细料。 2.磨圆角机:将板角尘端都磨圆。 3.洗板机:将板机上的粉尘杂质洗干净并风干。 4.焗炉:炉板,提高板料稳定性。 5.字唛机;在板边打字唛作标记。 四、操作规范: 1.自动开料机开机前检查设定尺寸,防止开错料。 2.内层板开料后要注意加标记分别横直料,切勿混乱。 3.搬运板需戴手套,小心轻放,防止擦花板面。 4.洗板后须留意板面有无水渍,禁止带水渍焗板,防止氧化。 5.焗炉开机前检查温度设定值。 五、安全与环保注意事项: 1.1.开料机开机时,手勿伸进机内。 2.2.纸皮等易燃品勿放在焗炉旁,防止火灾。 3.3.焗炉温度设定严禁超规定值。 4.4.从焗炉内取板须戴石棉手套,并须等板冷却后才可取板。5.5.用废的物料严格按MEI001规定的方法处理,防止污染环境。

七、切板 1. 设备:手动切板机、铣靶机、CCD打孔机、锣机、磨边机、字唛机、测厚仪; 2. 作用:层压板外形加工,初步成形; 3. 流程: 拆板→点点画线→切大板→铣铜皮→打孔→锣边成形→磨 边→打字唛→测板厚 4. 注意事项: a. 切大板切斜边; b.铣铜皮进单元; c. CCD打歪孔; d. 板面刮花。 八、环保注意事项: 1、生产中产生的各种废边料如P片、铜箔由生产部收集回仓; 2、内层成形的锣板粉、PL机的钻屑、废边框等由生产部收回仓变卖; 3、其它各种废弃物如皱纹胶纸、废粘尘纸、废布碎等放入垃圾桶内由清洁工收走。废手套、废口罩等由生产部回仓。 4、磨钢板拉所产生的废水不能直接排放,要通过废水排放管道排至废水部经其无害处理后方可排出。 钻孔 一、目的: 在线路板上钻通孔或盲孔,以建立层与层之间的通道。 二、工艺流程: 1.双面板:

电路板生产工艺流程

上海赛东科技有限公司 铝箔生产流程工艺 一、领料 1、生产线規定人员在按生产计划提前一个星期拿料单到仓库领取该 机种的全部料件。 2、领取材料后,如果有材料短缺情况应及时发出欠料报告单,使之相 关部门能够在一个星期内把所欠缺的材料采够进来。 3、领料员在领料时必须当面点清,尤其是重要物品,领完材料后把所 有材料放进生产部的储藏室里。 二、插机 1、发放材料时,首先检查一下插机位上的其它零件是否全部清理干净, 如没清理干净领料员可以不发料给插机人员, 到清理干净为止才 分料给插机线。 2、插机线班长拿由生技发的工艺要求,按现有作业人员工人数以及 PCB板上零件数平均分排给各作业人员,并且班长排的工艺要求应 该按从左至右,从小到大,从低到高的方式,使之作业员工在作业时 能够有条不混的工作。 3、作业员工在插机所插零件应紧贴PCB板,除高功率电阻(1W以上)设 计要求,工程工艺图等规定之外,例如:卧式电阻、电感、二极管、 跳线等。 4、作业员工在插CC、MC需要卧倒时应该把印有零件容量大小字体那 一面放在表面,以便检查.在插IC(集成块),排阻时应插到IC和排 阻脚的规定位臵.还要注意电解电容、桥堆、二极管、三极管的正

负极性、IC及排插的方向性。 5、插完后,作业员工应自我检查一遍,看是否有插错,漏插等现象检查 完后把插满零件的PCB板放到已调整好位臵木架上。 6、加工主控IC时,首先作业员应带好静电带,所用的烙铁功率为30W, 并且要加地线落地好。准备一瓶比重为0.83的助焊剂和一支毛笔。 7 、作业要求,注意IC的方向,首先把IC脚与PCB板焊盘对应准,焊 好四个角,再用毛笔沾少许助焊剂在IC脚以及对应的焊盘上,在 IC的四个角上再少许焊锡,用左手斜拿PCB板,右手用烙铁从上往 下拖,焊完后检查一下有无连焊、虚焊。 8 、原件脚高度一致(大于等于2mm,小于0.8mm),并且在零件面上的 线材橡胶与PCB板之间的间隙应小于1mm。 9 、线加套管直径=3mm T=80mm 连结线加套管直径=6mm T=60mm 10、磁棒线圈要用扎线扎紧,磁棒也要用扎线紧固在主板上。 三、锡焊 1、波焊作业员首先把助焊剂的比重调整为0.83,焊锡炉的温度调整为 250度,打开抽烟机。 2、在搬运装满了PCB板零件的木架时,如不小心零件掉了请波焊作业 员不要随便插上。请插机线QC来补上,以免零件插错。 3、作业员用左手拿好插满零件机板,用右手拿夹子夹住机板的中央, 使机板保持水平放入泡沫状的助焊剂中,使PCB板的铜箔面完全接 触,但是助焊剂不能搞到机板的零件面上来。 4、作业员夹着已浸好助焊剂机板水平浸入锡炉里,使PCB板铜箔面与

PCB板生产工艺和制作流程(详解)

开 料 一.目的: 将大片板料切割成各种要求规格的小块板料。 二.工艺流程: 三、设备及作用: 1.自动开料机:将大料切割开成各种细料。 2.磨圆角机:将板角尘端都磨圆。 3.洗板机:将板机上的粉尘杂质洗干净并风干。 4.焗炉:炉板,提高板料稳定性。 5.字唛机;在板边打字唛作标记。 四、操作规范: 1.自动开料机开机前检查设定尺寸,防止开错料。 2.内层板开料后要注意加标记分别横直料,切勿混乱。 3.搬运板需戴手套,小心轻放,防止擦花板面。 4.洗板后须留意板面有无水渍,禁止带水渍焗板,防止氧化。 5.焗炉开机前检查温度设定值。 五、安全与环保注意事项: 1.1.开料机开机时,手勿伸进机内。 2.2.纸皮等易燃品勿放在焗炉旁,防止火灾。 3.3.焗炉温度设定严禁超规定值。 4.4.从焗炉内取板须戴石棉手套,并须等板冷却后才可取板。 5.5.用废的物料严格按MEI001规定的方法处理,防止污染环境。

内层干菲林 一、一、原理 在板面铜箔上贴上一层感光材料(感光油或干膜),然后通过黑菲林进行对位曝光,显影后形成线路图形。 二、二、工艺流程图: 三、化学清洗 1. 1.设备:化学清洗机 2. 2.作用:a. 除去Cu表面的氧化物、垃圾等; b. 粗化Cu表面,增强Cu表面与感光油或干膜之间的结合力。 3. 3.流程图:

4. 4. 检测洗板效果的方法: a. a. 水膜试验,要求≥30s 5. 5. 影响洗板效板的因素:除油速度、除油剂浓度、微蚀温度、总酸度、Cu2+浓度、压力、速度 6. 6. 易产生的缺陷:开路(清洗效果不好导致甩菲林),短路(清洁不净产生垃圾)。 四、辘干膜 1. 1. 设备:手动辘膜机 2. 2. 作用:在铜板表面上贴上一层感光材料(干膜); 3. 3. 影响贴膜效果的主要因素:温度、压力、速度; 4. 4. 贴膜易产生的缺陷:内短(菲林碎导致Cu 点)、内开(甩菲林导致少Cu); 五、辘感光油 1. 1. 设备:辘感光油机、自动粘尘机; 2. 2. 作用:在已清洗好的铜面上辘上一层感光材料(感光油); 3. 3. 流程: 4. 4. 影响因素:感光油粘度、速度;焗板温度、速度。 5. 5. 产生的缺陷:内开(少Cu )。 六、曝光 1. 1. 设备/工具:曝光机、10倍镜、21Step 曝光尺、手动粘尘辘; 2. 2. 曝光机,在已辘感光油或干膜的板面上拍菲林后进行曝光,从而形成线路图形; 3. 3. 影响曝光的主要因素:曝光能量、抽真空度、清洁度; 4. 4. 易产生的缺陷:开路(曝光不良)、短路(曝光垃圾)。 七、DES LINE I、显影 1. 1. 设备:DES LINE; 2. 2. 作用:将未曝光的感光材料溶解掉,留下已曝光的部分从而形成线路; 3. 3. 主要药水:Na 2CO 3溶液; 4. 4.影响显影的主要因素:

电路板的生产过程

电路板的生产过程 电路板的生产是个很艰难的过程,它需要很多步骤,每一步骤都是要仔细完成的,不能有一步之差,下面我们就简单里了解一下电路板的生产过程: 1、开料:大板料→按开料要求切板→锔板→啤圆角/磨边→出板在符合要求的大张板材上,板料一般 分为:41'X49、40'X48‘等,目的是根据工程资料的mi要求,裁切成所需小块生产板件。 2、钻孔:上板→钻孔→下板→检查/修理跟据资料的位置钻出所求的孔径。 3、沉铜:磨板→烘干→沉铜自动线→下板→加厚铜→检查。 4、图形转移:磨板→印板→烘干→爆光→冲影→检查。 5、图形电镀:上板→除油→水洗二次→微蚀→水洗→酸洗→镀铜→水洗→浸酸→镀锡→水洗→下板→ 检查。 6、退膜:水膜→插架→浸碱→冲洗→擦洗→过机→检查。 7、蚀刻:蚀刻是利用化学反应法将非线路部位的铜层腐蚀去。 8、绿油:磨板→印感光绿油→锔板→冲影→磨板→印板→烘板→检查目的:绿油是将绿油菲林的图形 转移到板上,起到维护线路和阻止焊接的作用。 9、字符:绿油终锔后→冷却静置→调网→印字符→后锔→检查目的:字符是提供一种便于辩认的字符 符号在安装电子原件时起指示作用。 10、镀金手指:上板→除油→水洗两次→微蚀→水洗两次→酸洗→镀铜→水洗→镀镍→水洗→镀金使 之更具有硬度的耐磨性目的插头手指上镀上一层要求厚度的镍、金层。 11、喷锡板:微蚀→风干→预热→松香涂覆→焊锡涂覆→热风平整→风冷→洗涤风干以保护铜面不蚀 氧化,目的喷锡是未覆盖阻焊油的裸露铜面上喷上一层铅锡。 12、成型:分为锣板和啤板,目的通过模具冲压或数控锣机锣出客户所需要的形状的方法,数据锣机 板与啤板的精确度较高,手切板最低具只能做一些简单的外形。 13、测试:上模→放板→测试→合格→fqc目检→不合格→修理→返测试→ok检测目视不易发现到开 路,目的通过电子100%测试,短路等影响功能性之缺陷,主要分为测试架测试和飞针测试。14、终检:来料检查→目检→合格→fqa抽查→合格→包装→不合格→处置→检查→ok并对轻微缺陷 进行修理,目的通过100%目检板件外观缺陷,防止有问题及缺陷板件流出。 从以上介绍可以看出,需要进行多步的检查,因为如果有一步出错,以后生产处的电路板就不是一个合格的产品,在每一步都需要检查,这样才能让用户用到更安心的产品。

线路板生产工艺流程

线路板生产流程(一) 多种不同工艺的PCB流程简介 *单面板工艺流程 下料磨边→钻孔→外层图形→(全板镀金)→蚀刻→检验→丝印阻焊→(热风整平)→丝印字符→外形加工→测试→检验 *双面板喷锡板工艺流程 下料磨边→钻孔→沉铜加厚→外层图形→镀锡、蚀刻退锡→二次钻孔→检验→丝印阻焊→镀金插头→热风整平→丝印字符→外形加工→测试→检验 *双面板镀镍金工艺流程 下料磨边→钻孔→沉铜加厚→外层图形→镀镍、金去膜蚀刻→二次钻孔→检验→丝印阻焊→丝印字符→外形加工→测试→检验 *多层板喷锡板工艺流程 下料磨边→钻定位孔→内层图形→内层蚀刻→检验→黑化→层压→钻孔→沉铜加厚→外层图形→镀锡、蚀刻退锡→二次钻孔→检验→丝印阻焊→镀金插头→热风整平→丝印字符→外形加工→测试→检验 *多层板镀镍金工艺流程 下料磨边→钻定位孔→内层图形→内层蚀刻→检验→黑化→层压→钻孔→沉铜加厚→外层图形→镀金、去膜蚀刻→二次钻孔→检验→丝印阻焊→丝印字符→外形加工→测试→检验 *多层板沉镍金板工艺流程 下料磨边→钻定位孔→内层图形→内层蚀刻→检验→黑化→层压→钻孔→沉铜加厚→外层图形→镀锡、蚀刻退锡→二次钻孔→检验→丝印阻焊→化学沉镍金→丝印字符→外形加工→测试→检验 一步一步教你手工制作PCB

制作PCB设备与器材准备 (1)DM-2100B型快速制板机1台 (2)快速腐蚀机1台 (3)热转印纸若干 (4)覆铜板1张 (5)三氯化铁若干 (6)激光打印机1台 (7)PC机1台 (8)微型电钻1个 (1)DM-2100B型快速制板机 DM一2100B型快速制板机是用来将打印在热转印纸上的印制电路图转印到覆铜板上的设备, 1)【电源】启动键一按下并保持两秒钟左右,电源将自动启动。 2)【加热】控制键一当胶辊温度在100℃以上时,按下该键可以停止加热,工作状态显示为闪动的“C”。再次按下该键,将继续进行加热,工作状态显示为当前温度;按下此键后,待胶辊温度降至100℃以下,机器将自动关闭电源;胶辊温度在100℃以内时,按下此键,电源将立即关闭。 3)【转速】设定键一按下该键将显示电机转速比,其值为30转/分)~80转/分)。按下该键的同时再按下"上"或"下"键,可设定转印速度。

超详细PCB生产制程工艺介绍

PCB生产制程工艺介绍 中试部杨欣

内容目录 SUPCON 前言 名词介绍 主要工艺路线介绍 DFM可制造性设计 DFM设计准则的说明

前言 SUPCON 一般企业的状况,产品移交生产后,产品加工的自动化程 度极低,生产过程大量依赖于手工焊接,难以大批量量产。 同时生产出的产品经常出现问题,企业不得不耗费大量的资 源对生产出的新产品进行维修。 生产人员抱怨研发人员能力不足,设计的产品可生产性太 差;研发人员则觉得自己都把产品设计好了,样机调试也通 过了,为什么还是生产不好,完全是生产部门的水平不行。 问题关键在于研发人员不了解产品加工生产的要求;而生 产人员往往又无法将这种要求很好的传递给研发。

前言 SUPCON 一个公司的产品可靠性问题中,生产工艺的问题往往占一半以上。 显性:直接导致产品故障 隐性:导致产品损伤,降低产品的可靠性。 生产的一次直通率是衡量电子产品质量的重要指标。 明确一点,产品能设计出来,并不代表产品就一定能 大批量生产出来。

内容目录 SUPCON 前言 名词介绍 主要工艺路线介绍 DFM可制造性设计 DFM设计准则的说明

SUPCON 常用名词介绍 Design For Manufacturability DFT Design For Testability Design For Reliability DFM D esign F or M anufacturability 可制造性设计,指针对PCB 的可生产性需求而进行的设计。其目的在于减少PCB 板卡的加工难度,使产品符合自动化大批量生产的要求,并减少量产时所出现的问题。DFT D esign F or T estability 可测试设计DFR D esign F or R eliability 可靠性设计DFA DFV DF ……

电路板工艺流程教材

电路板工艺流程教材 电路板工艺流程 一.目的: 将大片板料切割成各种要求规格的小块板料。 二.工艺流程: 三、设备及作用: 1.自动开料机:将大料切割开成各种细料。

2.磨圆角机:将板角尘端都磨圆。 3.洗板机:将板机上的粉尘杂质洗干净并风干。4.焗炉:炉板,提高板料稳定性。 5.字唛机;在板边打字唛作标记。 四、操作规范:

1.自动开料机开机前检查设定尺寸,防止开错料。 2.内层板开料后要注意加标记分别横直料,切勿混乱。 3.搬运板需戴手套,小心轻放,防止擦花板面。 4.洗板后须留意板面有无水渍,禁止带水渍焗板,防止氧化。 5.焗炉开机前检查温度设定值。 五、安全与环保注意事项: 1.1.开料机开机时,手勿伸进机内。 2.2.纸皮等易燃品勿放在焗炉旁,防止火灾。 3.3.焗炉温度设定严禁超规定值。 4.4.从焗炉内取板须戴石棉手套,并须等板冷却后才可取板。 5.5.用废的物料严格按MEI001规定的方法处理,防止污染环境。 七、切板 1. 设备:手动切板机、铣靶机、CCD打孔机、锣机、磨边机、字唛机、测厚仪; 2. 作用:层压板外形加工,初步成形; 3. 流程: 拆板→点点画线→切大板→铣铜皮→打孔→锣边成形→磨边→打字唛→测板厚 4. 注意事项: a. 切大板切斜边; b.铣铜皮进单元; c. CCD打歪孔; d.

板面刮花。 八、环保注意事项: 1、生产中产生的各种废边料如P片、铜箔由生产部收集回仓; 2、内层成形的锣板粉、PL机的钻屑、废边框等由生产部收回仓变卖; 3、其它各种废弃物如皱纹胶纸、废粘尘纸、废布碎等放入垃圾桶内由清洁工收走。废手套、废口罩等由生产部回仓。 4、磨钢板拉所产生的废水不能直接排放,要通过废水排放管道排至废水部经其无害处理后方可排出。 钻孔 一、目的: 在线路板上钻通孔或盲孔,以建立层与层之间的通道。 二、工艺流程: 1.双面板: 三、设备与用途 1.钻机:用于线路板钻孔。 2.钉板机:将一块或一块以上的双面板用管位钉固定或一叠,以方便钻板时定位。 3.翻磨钻咀机:翻磨钻孔使用的钻咀。 4.上落胶粒机;将钻咀摔胶粒长度固定在0.800〞±0.005〞供钻机使用,或将胶粒从钻咀上退下来。 5.退钉机;双面板钻孔后退管位钉使用。 6.台钻机:底板钻管位孔使用。 四、工具 经ME试验合格,QA认可的钻咀。 五、操作规范 1.取拿钻咀,搬运上落生产板时需戴手套,以免污染钻咀及线路板。 2.钻咀使用前,须经检查OK,确保摔胶粒长度在0.800〞±0.005〞之内。 3.搬运、摆放生产板过程中,不得有拖板、摔板、板上齐板等现象发生,严防擦花线路板。

PCB生产工艺解读

目录 嘉立创--------生产制作工艺详解 (3) 一设计参数详解 (3) 1、线路 (3) 2.via过孔(就是俗称的导电孔) (3) 二设计注意事项 (3) 1、关于PADS设计的原文件。 (3) 2、关于PROTEL99SE及DXP设计的文件 (4) 3.PAD焊盘(就是俗称的插件孔(PTH) ) (4) 4.防焊 (5) 5.字符(字符的的设计,直接影响了生产,字符的是否清晰以字符设计是非常有关系) (5) 6.非金属化槽孔槽孔的最小间距不小于1.6mm 不然会大大加大铣边的难度(图4) (5) 7.拼版 (5) 8.protel 中外型层,非金属化槽以keepout(禁布线层)为准 (5) 三、嘉立创工艺水平 (5) 四、嘉立创制程工艺要求 (5) 五、客户下单文件类型 (10) 六、制程工艺要求 (11)

七、设计错误案例 (15)

嘉立创--------生产制作工艺详解 --------电子设计工程师必备一流的生产来自一流的设计,PCB的生产离不开设计者的密切配合,请各位工程师按嘉立创生产制作工艺详解来进行设计。 一设计参数详解 1、线路 1)最小线宽:6mil (0.153mm)。也就是说线宽小于6mil时打样时生产不出来,如果设计条件允许,线越宽,工厂生产越方便,良品率越高。一般设计常规在10mil左右,此点非常重要,设计一定要考虑。 2)最小线距:6mil(0.153mm).。最小线距,就是线到线,线到焊盘的距离不小于6mil 从生产角度出发,是越大越好,常规在10mil,当然设计有条件的情况下,越大越好,此点也非常重要,设计一定要考虑。 3)线路到外形线间距:0.508mm(20mil)。 2.via过孔(就是俗称的导电孔) 1)最小孔径:0.3mm(12mil) 2)最小过孔(VIA)孔径不小于0.3mm(12mil),焊盘单边不能小于6mil(0.153mm),最好大于8mil(0.2mm) 大则不限(见图3) 此点非常重要,设计一定要考虑 3)过孔(VIA)孔到孔间距(孔边到孔边)不能小于:6mil。最好大于8mil。此点非常重要,设计一定要考虑 3、焊盘到外形线间距0.508mm(20mil) 二设计注意事项 1、关于PADS设计的原文件。 1)PADS铺用铜方式,我司是Hatch方式铺铜,客户原文件移线后,都要重新铺铜保存(用Flood铺铜),避免短路。 2)双面板文件PADS里面孔属性要选择通孔属性(Through),不能选盲埋孔属性(Partial),无法生成钻孔文件,会导致漏钻孔。

PCB生产工艺流程

PCB板制作工艺流程简介 姓名: 班级: 学号: 指导教师:

PCB版制作生产工艺流程 通常把在绝缘材上,按预定设计,制成印制线路、印制元件或两者组合而成的导电图形称为印制电路。而在绝缘基材上提供元器件之间电气连接的导电图形,称为印制线路。这样就把印制电路或印制线路的成品板称为印制线路板,亦称为印制板或印制电路板(Printed Circuit Board简称为PCB)。 PCB工程制作的水平,可以体现出设计者的设计水准,也可以反映出印制板生产厂家的生产工艺能力和技术水平。同时由于PCB工程制作融计算机辅助设计和辅助制造于一体,要求极高的精度和准确性,否则将影响到最终板载电子品的电气性能,严重时可能引起差错,进而导致整批印制板产品报废而延误生产厂家合同交货时间,并且蒙受经济损失。 PCB的实际制造过程是在PCB工厂里完成的,工厂是不管设计的,设计工作由专门的公司进行,它们的设计结果叫做原理图,原理图再由专业的布线公司进行线路图的设计,得到的线路图就被交到PCB工厂制作。工厂的任务就是将工作站中的线路图变成现实中的实物板。 印制电路板的设计是以电路原理图为根据,实现电路设计者所需要的功能。印刷电路板的设计主要指版图设计,需要考虑外部连接的布局、内部电子组件的优化布局、金属连线和通孔的优化布局、电磁保护、热耗散等各种因素。优秀的版图设计可以节约生产成本,达到良好的电路性能和散热性能。简单的版图设计可以用手工实现,复杂的版图设计需要借助计算机辅助设计(CAD)实现。 现在,几乎我们能见到的电子设备都离不开它,小到电子手表、计算器,大到计算机,通讯电子设备,军用武器系统,只要有集成电路等电子元器件,为了它们之间的电气互连,都要使用印制板。在较大型的电子产品研究过程中,最基本的成功因素是该产品的印制板的设计、文件编制和制造。印制板的设计和制造质量直接影响到整个产品的质量和成本,甚至导致商业竞争的成败。 印制电路板的基本工艺流程,如下图所示: 图2 双面板基本工艺流程 双面板所需的操作设备及其作用: 1.钻机:用于线路板钻孔。 2.钉板机:将一块或一块以上的双面板用管位钉固定或一叠,以方便钻板时定位。 3.翻磨钻咀机:翻磨钻孔使用的钻咀。 4.上落胶粒机;将钻咀摔胶粒长度固定在0.8±0.005供钻机使用,或将胶粒从钻咀上退下来。 5.退钉机;双面板钻孔后退管位钉使用。 6.台钻机:底板钻管位孔使用。 印制电路板的具体工艺流程及其注意事项: 1、打印电路板。将绘制好的电路板用转印纸打印出来,注意滑的一面面向

印制电路板制造工艺参考资料

印制电路板制造工艺参考资料 前言在印制电路板制造过程中,涉及到诸多方面的工艺工作,从工艺审查到生产到最终检验,都必须考虑到工艺质量和生产质量的监测和控制。为此,将曾通过生产实践所获得的点滴经验提供给同行,仅供参考。 第一章工艺审查和准备 工艺审查是针对设计所提供的原始资料,根据有关的" 设计规范" 及有关标准,结合生产实际,对设计 部位所提供的制造印制电路板有关设计资料进行工艺性审查。工艺审查的要点有以下几个方面:1,设计资料是否完整(包括:软盘、执行的技术标准等); 2,调出软盘资料,进行工艺性检查,其中应包括电路图形、阻焊图形、钻孔图形、数字图形、电 测图形及有关的设计资料等; 3,对工艺要求是否可行、可制造、可电测、可维护等。 第二节工艺准备工艺准备是在根据设计的有关技术资料的基础上,进行生产前的工艺准备。工艺应按照工艺程序进行科学的编制,其主要内容应括以下几个方面: 1,在制定工艺程序,要合理、要准确、易懂可行; 2,在首道工序中,应注明底片的正反面、焊接面及元件面、并且进行编号或标志; 3,在钻孔工序中,应注明孔径类型、孔径大小、孔径数量; 4,在进行孔化时,要注明对沉铜层的技术要求及背光检测或测定; 5,孔后进行电镀时,要注明初始电流大小及回原正常电流大小的工艺方法; 6,在图形转移时,要注明底片的药膜面与光致抗蚀膜的正确接触及曝光条件的测试条件确定后,再进行曝光; 7,曝光后的半成品要放置一定的时间再去进行显影; 8,图形电镀加厚时,要严格的对表面露铜部位进行清洁和检查;镀铜厚度及其它工艺参数如电流密度、槽液温度等; 9,进行电镀抗蚀金属- 锡铅合金时,要注明镀层厚度;10,蚀刻时要进行首件试验,条件确定后再进行蚀刻,蚀刻后必须中和处理;11,在进行多层板生产过程中,要注意内层图形的检查或AOI 检查,合格后再转入下道工序; 12,在进行层压时,应注明工艺条件; 13,有插头镀金要求的应注明镀层厚度和镀覆部位;14,如进行热风整平时,要注明工艺参数及镀层退除应注意的事项; 15,成型时,要注明工艺要求和尺寸要求;16,在关键工序中,要明确检验项目及电测方法和技术要求。 第二章原图审查、修改与光绘 第一节原图审查和修改 原图是指设计通过电路辅助设计系统(CAD以软盘的格式,提供给制造厂商并按照所提供电路设计 数据和图形制造成所需要的印制电路板产品。要达到设计所要求的技术指标,必须按照" 印制电路板设计规范" 对原图的各种图形尺寸与孔径进行工艺性审查。 (一)审查的项目 1,导线宽度与间距;导线的公差范围; 2,孔径尺寸和种类、数量;3,焊盘尺寸与导线连接处的状态;4,导线的走向是否合理;5,基板

PCB板生产工艺流程

一、开料 目的:根据工程资料MI的要求,在符合要求的大张板材上,裁切成小块生产板件.符合客户要求的小块板料. 流程:大板料→按MI要求切板→锔板→啤圆角\磨边→出板 二、钻孔 目的:根据工程资料(客户资料),在所开符合要求尺寸的板料上,相应的位置钻出所求的孔径. 流程:叠板销钉→上板→钻孔→下板→检查\修理 三、沉铜 目的:沉铜是利用化学方法在绝缘孔壁上沉积上一层薄铜. 流程:粗磨→挂板→沉铜自动线→下板→浸1%稀H2SO4→加厚铜 四、图形转移 目的:图形转移是生产菲林上的图像转移到板上 流程:(蓝油流程):磨板→印第一面→烘干→印第二面→烘干→爆光→冲影→检查;(干膜流程):麻板→压膜→静置→对位→曝光→静置→冲影→检查 五、图形电镀 目的:图形电镀是在线路图形裸露的铜皮上或孔壁上电镀一层达到要求厚度的铜层与要求厚度的金镍或锡层. 流程:上板→除油→水洗二次→微蚀→水洗→酸洗→镀铜→水洗→浸酸→镀锡→水洗→下板 六、退膜 目的:用NaOH溶液退去抗电镀覆盖膜层使非线路铜层裸露出来. 流程:水膜:插架→浸碱→冲洗→擦洗→过机;干膜:放板→过机 七、蚀刻 目的:蚀刻是利用化学反应法将非线路部位的铜层腐蚀去. 八、绿油 目的:绿油是将绿油菲林的图形转移到板上,起到保护线路和阻止焊接零件时线路上锡的作用 流程:磨板→印感光绿油→锔板→曝光→冲影;磨板→印第一面→烘板→印第二面→烘板九、字符 目的:字符是提供的一种便于辩认的标记 流程:绿油终锔后→冷却静置→调网→印字符→后锔 十、镀金手指 目的:在插头手指上镀上一层要求厚度的镍\金层,使之更具有硬度的耐磨性 流程:上板→除油→水洗两次→微蚀→水洗两次→酸洗→镀铜→水洗→镀镍→水洗→镀金

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