Car industry Application of Wax on a Car Body

Design FMEA (QS9000)

FM001234 01.03/Body Closures 199x/Lion 4dr/Wagon

(1) Front Door Subsystem - 01.30/Body Closures

Criteria for estimation

RPN = S*Po*Pd

Severity (S)

Occurence (Po)

Detection (Pd)

Classification

(1) None, No effect on product

(2) Very Minor, Fit n' Finish / Squeak n' Rattle items does not conform.(3) Minor, Fit n' Finish / Squeak n' Rattle items does not conform.(4) Very Low, Fit n' Finish / Squeak n' Rattle items does not conform.(5) Low, but Comfort/Convenience item(s) operable at reduced level.(6) Moderate, Vehicle/item operable, but Comfort item(s) inoperable.(7) High, Vehicle/item operable, but at reduced level of performance (8) Very High, Vehicle/item inoperable, with loss of primary funtion.(9) Hazardous-with warning,failure mode affects safe vehicle operation (10) Hazardous-without warning,risk for human injuries

(1) Remote: Failure is unlikely. < 1:1,500,000(2) Low: Relatively few failures, 1:150,000(3) Low: Relatively few failures, 1:15,000(4) Moderate: Occasional failures, 1:2,000(5) Moderate: Occasional failures, 1:400(6) Moderate: Occasional failures, 1:80(7) High: Repeated failures, 1:20(8) High: Repeated failures, 1:8

(9) Very high: Failure is almost inevitable, 1:3(10) Very high: Failure is almost inevitable, > 1:2

(1) Almost Certain that the Design Control will detect cause/failure.(2) Very High chance the Design Control will detect cause/failure.(3) High chance the Design Control will detect cause/failure.

(4) Moderately High chance the Design Control will detect cause/failure.(5) Moderate chance the Design Control will detect cause/failure.(6) Low chance the Design Control will detect cause/failure.

(7) Very Low chance the Design Control will detect cause/failure.(8) Remote chance the Design Control will detect cause/failure.

(9) Very Remote chance the Design Control will detect cause/failure.(10) Absolutely Uncertainty,Design Control won't detect cause/failure.

CC Critical Characteristic, Safety or Government Regualtions (Ford)D Diamond, Require SPC (Chrysler)

FF Fit/Function, Affect Customer Satisfaction (GM)

SC Safety/Compliance, Safety or Government Regualtions(GM)Si Significant Characteristic, Affect Customer Satisfaction(Ford)

P Pentagon, Verification is Mandatory, Critical Characteristics, (Chrysler)CP Critical Parameter

RP Risk for human injuries

S Shield, Safety Character, (Chrysler)

on the contrary的解析

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三井Aurum Milex

热塑性聚酰亚胺(TPI) NGDJ—热塑性聚酰亚胺,是新一代的高性能特种工程塑料。它不仅保留了传统热固性聚酰亚胺的高强度、耐高温、耐化学腐蚀、介电性能好、抗辐射等特性,而且提高了可加工性,除可采用热模压成型方法外,也可采用挤出或注射方法成型。 NGDJ主要特性 1. 突出的可加工特性:可注塑、挤出、热模压、喷涂成型;加工时无小分子放出,收缩率小,制件尺寸精度高 2. 综合力学性能优异:高模量,耐冲击,抗蠕变,是一种理想的结构功能材料 3. 热变形温度高,耐热性好,在较宽的高低温范围内具有良好的力学强度 4. 绝缘性高,介电性能优异 5. 化学性质稳定,耐各类油脂、有机溶剂;阻燃、抗老化 6. 耐磨损,为一种出色的减摩、增磨基体材料 7.材料纯净:加工和使用过程中无对环境污染小分子物质放出。 NGDJ应用领域 NGDJ以其优异的综合性能,可广泛应用于航空航天、汽车、电子电器、精密机械等领域。它可制成板材、棒材或管材、薄膜及结构复合的精密部件,如齿轮、轴承、接插件等,在特定场合下为替代金属、陶瓷、低温或难加工热固性树脂的理想材料。 目前,市场上耐温等级最高的先进聚合物材料是以DUPONT公司的VESPEL为代表的热固性聚酰亚胺,但由于其加工成型困难,产品形式主要以成品或半成品为主,应用面窄,价格昂贵。其次是以MITSUI公司的AURUM为代表的热塑性聚酰亚胺(TPI),以及VICTREX的聚醚醚酮(PEEK)。此类材料可采用挤出、注射和热模压成型的方法成型,大大改善了可加工性能。 NGDJ—热塑性聚酰亚胺与MITSUI公司AURUM属同一类型和级别聚合物材料,各方面性能均达到AURUM树脂指标,而且与AURUM树脂相比成型温度低得多;与PEEK及其它类特种工程塑料(如PES、PPS)相比在力学性能、热性能及摩擦磨损性能方面均有着明显优势。 参考价格:750.00 热塑性聚酰亚胺 2006-3-22 0:00:00 来源: 20世纪60年代,航空航天工业的发展使聚酰亚胺(PI)应运而生,它是一类含有酰胺基的新型工程塑料,按性能分为假热塑性聚酰亚胺、热塑性聚酰亚胺和热固性聚酰亚胺。由于聚酰亚胺分子中具有十分稳定的芳杂环结构,使其体现出其他高分子材料所无法比拟的优异电绝缘性、耐磨性、抗高温辐射和物理机械性。同时,作为一种性能突出的尖端材料,聚酰亚胺已广泛用于机电、电子电气、仪表、石油化工、计量等领域,并成为全球火箭、宇航等尖端科技领

制动时踏板行程过大二-六-三

制动时踏板行程过大 1.什么是制动踏板自由行程?为什么要有正确的制动踏板行程? 自由行程就杲制动睹板踩T去的时候刹车不起作用的那段距离.杲为了防止刹车片和制动盘衣紧而过热.傍刹车先灵° 如果没有自由行程.蔬剎车会很不紆服.苴至可育液车轮自己抱死* 汽车制动踏板自由行程是为保证不发生制动拖滞、彻底解除制动而设置的。 测量时在制动踏板与驾驶室底板之间立一直尺,用手向下按制动踏板至有阻力时,记下 直尺读数。然后放松踏板,再看直尺读数。两次读数之差即为踏板自由行程。液压制动的踏 板自由行程一般在 15-20mm,在调整时应按车型规定的数值进行调整。 制动时踏板行程过大,会引起什么故障? 制动作用迟缓,制动效能很低甚至丧失。摩擦片与轮毂接触不良 2.汽车制动系的功用是什么?有哪些类型?并结合示意图说出汽车制动系的 组成部分名称。 组成: 1?供能装置:包括供给、调节制动所需能量以及改善传动介质状态的各种部件 2.控制装置:产生制动动作和控制制动效果各种部件,如制动踏板 3?传动装置:包括将制动能量传输到制动器的各个部件如制动主缸、轮缸 4?制动器:产生阻碍车辆运动或运动趋势的部件 制动系统一般由制动操纵机构和制动器两个主要部分 1、前轮盘式制动器 _____________ 2、制动主缸_________ 3、真空伺服气室(真空助力 气)____________ 4、制动踏板 ________________ 5、6、制动组合阀7、 汽车制动系统⑴功用 1)保证汽车行驶中能按驾驶员要求减速停车 2)保证车辆可靠停放

3)保障汽车和驾驶人的安全 类型: 1?按功用分:行车制动系驻车制动系辅助制动系 1)行车制动系一一是由驾驶员用脚来操纵的,故又称脚制动系。它的功用是使正在行驶中的汽车减速或在最短的距离内停车。 2)驻车制动系一一是由驾驶员用手来操纵的,故又称手制动系。它的功用是使已经停在各种路面上的汽车驻留原地不动 3)第二制动系——在行车制动系失效的情况下,保证汽车仍能实现减速或停车的一套装置。在许多国家的制动法规中规定,第二制动系也是汽车必须具备的。 4)辅助制动系一一经常在山区行驶的汽车以及某些特殊用途的汽车,为了提高行车的 安全性和减轻行车制动系性能的衰退及制动器的磨损,用以在下坡时稳定车速。 2.按制动能量传输分:机械式、液压式、气压式、电磁式、组合式。 3?按回路多少分:单回路制动系、双回路制动系。 4?按能源分:人力制动系、动力制动系、伺服制动系。 1)人力制动系一一以驾驶员的肌体作为唯一的制动能源的制动系。 2)动力制动系完全靠由发动机的动力转化而成的气压或液压形式的势能进行制动的制动系。 3)伺服制动系——兼用人力和发动机动力进行制动的制动系。 ⑴按制动系统的作用分类 制动系统可分为。用以使行驶中的汽车降低速度甚至停车的制动系统称为行车制动系 统;用以使已停驶的汽车驻留原地不动的制动系统则称为驻车制动系统;在行车制动系统失 效的情况下,保证汽车仍能实现减速或停车的制动系统称为应急制动系统;在行车过程中,辅助行车制动系统降低车速或保持车速稳定,但不能将车辆紧急制停的制动系统称为辅助制 动系统。上述各制动系统中,行车制动系统和驻车制动系统是每一辆汽车都必须具备的。 ⑵按制动操纵能源分类 制动系统可分为人力制动系统、动力制动系统和伺服制动系统等。以驾驶员的肌体作为唯一 制动能源的制动系统称为人力制动系统;完全靠由发动机的动力转化而成的气压或液压形式 的势能进行制动的系统称为动力制动系统;兼用人力和发动机动力进行制动的制动系统称为 伺服制动系统或助力制动系统。 ⑶按制动能量的传输方式分类 制动系统可分为机械式、液压式、气压式、电磁式等。同时米用两种以上传能方式的 制动系称为组合式制动系统。

英语造句

一般过去式 时间状语:yesterday just now (刚刚) the day before three days ag0 a week ago in 1880 last month last year 1. I was in the classroom yesterday. I was not in the classroom yesterday. Were you in the classroom yesterday. 2. They went to see the film the day before. Did they go to see the film the day before. They did go to see the film the day before. 3. The man beat his wife yesterday. The man didn’t beat his wife yesterday. 4. I was a high student three years ago. 5. She became a teacher in 2009. 6. They began to study english a week ago 7. My mother brought a book from Canada last year. 8.My parents build a house to me four years ago . 9.He was husband ago. She was a cooker last mouth. My father was in the Xinjiang half a year ago. 10.My grandfather was a famer six years ago. 11.He burned in 1991

三井化学株式会社

2010年 8月 6日 各 位 三井化学株式会社 帝人株式会社 日本国内におけるボトル用PET樹脂事業の統合について 三井化学株式会社(以下、「三井」。本社:東京都港区、社長:田中稔一)と、帝人株式会社(以下、「帝人」。本社:東京都千代田区、社長:大八木成男)は、今般、下記のとおり日本国内におけるボトル用PET(ポリエチレンテレフタレート)樹脂事業を統合し、新たに合弁会社を設立することを基本合意しました。 新設する合弁会社は、三井、帝人がそれぞれに展開しているPET樹脂原料事業とのシナジー効果を含めたサプライチェーン一貫での競争力を徹底的に強化するとともに、高い品質とコスト競争力で顧客のニーズに応え、事業価値の最大化を図ってまいります。 記 1.事業統合の背景?意義 (1)日本国内における飲料需要の減少、アジアからのボトル用PET樹脂の輸入拡大などに伴い、ボトル用PET樹脂事業を取り巻く環境は厳しい状況にあります。 (2)現在、三井はボトル用PET樹脂事業、およびその原料である高純度テレフタル酸(以下、PTA)事業を展開しています。一方、帝人はボトル用PET樹脂事業、およびPTAの粗原料であるパラキシレン(以下、PX)事業を展開しています。 (注)帝人のボトル用PET樹脂事業は、帝人(株)が製造、帝人化成(株)が販売を行っています。(3)こうした中、三井と帝人は、厳しい事業環境にあるボトル用PET樹脂事業において、生産?販売?研究に亘るシナジー効果を追求すべく、両社の事業統合について検討を重ねてきました。(4)このたびの事業統合により、生産を集約することによる操業度向上、販売部門統合によるマーケティング力の強化、両社の技術の融合による生産技術力の強化といったシナジー効果が新合弁会社で実現されるとともに、PET樹脂の原料である帝人のPX事業および三井のPTA事業を含むサプライチェーン一貫での競争力の徹底強化を図ることができます。(5)さらに、このたびの事業統合により、三井は自社で製造するPTAの原料となるPXを競争力ある価格で安定的に調達することが可能となり、また、PTA事業の安定化を図ることができます。一方、帝人は国内におけるPXの安定大口顧客を確保することになり、PX事業の安定化を図ることができます。

汽车制动、离合踏板总成技术要求(2)

F507项目制动、离合踏板总成技术要求东风小康汽车有限公司产品技术中心

F507项目制动、离合踏板总成除满足JT-FA-DP-2013-068_东风小康F505(风光)车型踏板及支架总成检查技术条件的要求外,还应满足下列要求。 1.1 基本要求 1.1.1 工作灵活性:踏板总成在整个工作行程上应轻便灵活,无异常噪声和干燥摩擦。当撤去踏板上的作用力之后,各踏板在回位弹簧的作用下,应能快速自行复位。 1.1.2 外观:零件表面光洁、无氧化、裂纹、气泡、毛刺、严重划痕等缺陷;焊点正确牢固,不得有虚焊、夹渣、裂纹或未焊透等现象,无突起和其它缺陷及踏板支架各安装孔不得错位。 1.1.3 踏板材料、厚度、踏板臂旋转角度、转动部位所涂润滑脂型号、各关重尺寸、制动与离合踏板之间间距及弹簧回位力等关键参数必须与会签的产品二维图规定的参数一致。 1.2 性能要求 踏板性能要求按QC/T788《汽车踏板装置性能要求及台架试验方法》验收 1.2.1 纵向位移:在表1规定的法向力作用下,踏板或踏板总成应无裂纹或永久变形,并满足表1的规定。 1.2.2 横向位移:在50N的横向力作用下,踏板或踏板总成应满足表2的规定。 1.2.3 护套接合力:在±15N·m的倾斜力矩作用下,踏板护套应无脱落、断裂和其它异常(如护套和踏板总成一起总成供货)。 1.2.4 噪音:踏板在整车装配后,工作过程中的噪音应不大于65dB;在全部试验过程中应无异常噪音。 表1 踏板或踏板总成允许的纵向位移 表2踏板或踏板总成允许的横向位移

1.3 强度 1.3.1 强度:在规定的法向推力作用下,踏板应无裂纹或破坏等缺陷,并满足规定的技术要求,详见表3所示。 1.3.2 破坏试验:踏板或踏板总成发生功能或结构损坏时的载荷应满足表4的规定。 表3 踏板或踏板总成强度要求 表4 踏板或踏板总成发生功能或结构损坏时的载荷要求 1.4 温度适应性 1.4.1 高温工作性:在(80±2)℃的环境温度中工作时,不得有干涉拉挂现象和异常响声。 1.4.2 低温工作性:在(-40±2)℃的环境温度中工作时,不得有干涉拉挂现象和异常响声。 1.4.3 护套冷冲击:踏板护套在进行冷冲击试验后,应无裂纹或其它异常。1.5 耐久性 1.5.1 在耐久性试验过程中应无裂纹、噪声、明显的永久变形和其它异常。1.5.2 耐久性试验后,踏板装置在50N±1N正反两方向纵向力作用下的纵向位移不应大于4mm,在50N±1N正反两方向侧向力作用下的侧向位移不应大于6mm。1.6 抗扭性能:在制动踏板上施加15N·m±1 N·m正反两方向的旋转力矩,制动踏板和焊缝应无裂纹或损坏等缺陷。

学生造句--Unit 1

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英语句子结构和造句

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base on的例句

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英语造句大全

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制动踏板

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车迅速停止。高速行驶时的紧急制动:因车速高,惯性大,稳定性差,为了增加制动效能和提高汽车的稳定性,操作时应先踏下制动踏板,在车轮抱死前.再踏下离合器踏板,以利用发动机低转速牵制车速。车轮抱死后,前轮转向即失去控制,车身易侧滑。紧急制动需要掌握的要点是:因制动抱死后转向失去控制,在制动时汽车的惯性行进到距障碍物很近时,可根据车速看能否停住车,能停住车时则尽量使车辆停止,停不住时则需绕行。绕行时应放松制动踏板,使转向盘起到控制作用,绕过障碍物后再踏下制动踏板。紧急制动时车辆易产生侧滑,侧滑时应稍微放松制动踏板以调正车身。 3.联合制动。变速杆在挡内放松油门踏板,利用发动机转速牵阻降低车速,同时踏下制动踏板使车轮制动,这种靠发动机牵阻和车轮制动器制动来减速的方法称为联合制动。联合制动在正常行驶需减速时运用较多,应掌握的重点是:当车速低于本挡位内车速最低标准时,应及时换入低一挡位,否则将会加速损坏传动系统。 4.间歇性制动。间歇性制动是断续踏下和放松制动踏板的一种制动方法。在山区行车时由于长期下坡,制动系统易产生高温,造成制动性能降低,为防止制动系统温度过高,驾驶员常使用间歇性制动方法。另外,气制动装置因进气量不易掌握也可使用快速间歇性制动。 装配ABS车辆的紧急制动

(完整版)主谓造句

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三井化学

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扭曲刚性2 30 C A S T M D 1 4 3 M p a 222339999 1 4 1 4 3 < - 3 00 C M p a 776 1 3 1 3 3 4 3 3 3 2 3 6 1 5 8 1 3 4 维卡软化点A S T M D 1 5 2 5 C --- 4 8 4 8 6 2 5 8 5 7 5 5 6 8 6 5 8 2 融点D S C M E T H O D C 5 5 5 5 9 5 9 6 6 6 6 6 6 6 6 7 7 7 7 9 4 脆化温度A S T M D 7 4 6 C < - 7 00 C < - 7 00 C < - 7 00 C < - 7 00 C < - 7 00 C < - 7 00 C < - 7 00 C < - 7 00 C < - 7 00 C < - 7 00 C < - 7 00 C < - 7 00 C POE概论 POE为Poly Olefin Elastomer的简写,也就是烯桱类的弹性体总称一般称的POE代表以PE为硬质段的弹性体,而以PP为硬质段的弹性体包括称为TPO和TPV 这几种POE生产厂家: POE目前全世界仅有四家厂商生产:目前都不在中国生产,所以全

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表1 踏板或踏板总成允许的纵向位移 表2踏板或踏板总成允许的横向位移 1.3 强度 1.3.1 强度:在规定的法向推力作用下,踏板应无裂纹或破坏等缺陷,并满足规定的技术要求,详见表3所示。 1.3.2 破坏试验:踏板或踏板总成发生功能或结构损坏时的载荷应满足表4的规定。 表3 踏板或踏板总成强度要求 表4 踏板或踏板总成发生功能或结构损坏时的载荷要求 1.4 温度适应性 1.4.1 高温工作性:在(80±2)℃的环境温度中工作时,不得有干涉拉挂现象

初中英语造句

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