连铸英文介绍
Continuous Casting of Steel
Since steel was first introduced in a liquid state over 200 years ago, it has been almost invariably the practice to cast it into rectangular blocks by ingot casting, from which the desired finished shape is obtained by subsequent hot or cold working. These blocks or ingots were originally very small in weight, but as the output of steelmaking increased, so has the weight so 15 ton or 20 ton ingots are now common practice. These ingots are rolled in primary mills to produce blooms or slabs which subsequently receive further processing.
This method of ingot casting is characterized by the following.
(1)A large amount of capital is invested in moulds, bottom plates, and
locomotives.
(2)Considerable capital is also invested in buildings and cranes
needed for stripping the ingots and resetting the moulds on the casting cars, while soaking pits and preheating furnaces are necessary to prepare the ingots for rolling, and a primary mill to roll them.
(3)Ingots contain segregation, which is a disadvantage in all steels and
needs “hot tops” for certain qualities, with a consequent high loss as scrap after rolling in the primary mills. The larger the ingot, the more intense the segregation.
(4)Each ingot needs a discard to be removed at top and bottom after
primary rolling.
These requirements have turned the thoughts of steel makers to the possibility of casting molten steel directly slabs, blooms or billets thus eliminating much of the capital and working costs outlined above, as well as minimizing the loss of yield and the segregation in the products. Continuous casting of steel was developed in Europe in the mid 1950s and has grown rapidly till the present world capacity is over 1000 million tons per annum, representing about 89.7 percent of the total tonnage of steel.
The first continuous casting machines for steel were aligned vertically. It involved pouring the metal from a height of over 13 meters above ground level, with the cast section of metal descending vertically and being progressively water cooled (Fig. 11-1). Efforts to reduce building-height first led to continuous-casting systems in which molten metal passed into a vertical mould and solidified completely before being bent and later to the bow-type installation which has a curved mould and is the system most used today.
In a typical plant, deoxidized steel from an electric furnace is run into a ladle, transported to the casting bay and brought to rest above the concast machine. A stopper rod or a slide gate is used to control the flow of steel into a tundish reservoir. Once a predetermined steel level is attained in the tundish, nozzles are opened and the molten steel feeds the open-ended mould set in a frame with internal water-cooling. At the start-up, a dummy bar, constructed of chain links, is fitted into the mould bottom and rests between the arc formed by the machine roller guides. The molten in the mould meets the dummy bar and freezes to it and at a certain level of steel in the mould two operations are immediately initiated; the mould unit begins to reciprocate in a vertical direction and the dummy bar is withdrawn through and down the machine. At the horizontal plane it is supported by a series of rollers which are grouped into segments for operation and maintenance and are cooled down by water spraying.
At the exit of the straightening unit a roll is lowered which separates
the dummy bar from the length of cast steel. The dummy bar is either lifted to one side of the machine or hoisted on to the ramp above the machine. The strand of cast metal continues traveling along the discharge rollers to a gas torch cut-off station. At predetermined dimensions this torch will automatically cut the strand to required lengths. Once the start-up complete the Concast machine continues to cast sections in accordance with the volume of metal fed from the steel furnaces.
The end products of continuous casting plants are square section billets (up to 250mm*250mm), and slabs which are about 300mm thick by 2500mm wide. Other shapes are also produced, including round bars and octagonal sections.
Since the 1960s, continuous casting has steadily displaced ingot casting. The types of continuous casting machines, their listing likewise reflecting the historical development of this technique, are: vertical, bending and straightening, circular bow, oval bow. The evolution from one form to the next has been accompanied by a considerable reduction in overall height. Nowadays, there are further on going process developments in the continuous casting of steel, these include: Horizontal continuous casting with stationary mould and continuous casting with moving belt or rotating rolls (double rollers), etc.
In brief, the reasons for continuous-casting systems are:
(1)Lower investment outlay compared with that for a blooming train;
(2)More productivity than with conventional ingot-casting;
(3)High degree of consistency of steel composition along the whole
length of the strand; better core quality, especially with flat strands;
high inherent surface quality, leading to savings on an otherwise expensive surfacing process;
(4)High degree of automation;
(5)Friendlier to the environment.
生词表
continuous casting 连铸
invariably 不变地，总是
rectangular 矩形的，成直角的
block 毛坯，粗坯
ingot casting 铸锭，模铸锭
subsequent 随后的，后来的
cold working 冷加工
primary mill 初轧厂
bloom 大（初轧）方坯
slab （大，初轧）板坯
capital 资金
bottom plate 底板
locomotive 机车，火车头
strip 剥，剥去
reset 重放，重新安排
soaking pit 均热炉
preheating furnace 预热炉
segregation 偏析作用
discard 丢弃，抛弃
discharge rollers 卸料辊道辊子
outline 略述
yield 产量，收益
annum 年，岁
strand 铸坯
bow-type 弓形的，弧形的
installation （整套）装置[备]，设备[施] curve 弯，使弯曲
casting bay 连铸跨
stopper rod 棒塞
slide gate 滑动水口
chain links 链环
tundish 中间包，中间罐
mould set 全套锭模，整套锭模
dummy bar 引锭杆
roller 辊子
initiate 开始，发起
reciprocate （使）往复（运动），来回 withdraw 抽出，拉动
horizontal 水平的
freeze 凝固，凝结
segment 弧形，扇形体
straighten （使）弄直，伸直 straightening unit 矫直装置
hoist 升起，吊起
ramp 斜面，斜台
cut-off station 切割站
predetermine 预定，预先确定
in accordance with 根据，按照
dimension 尺寸，尺度
octagonal 八边形的，八角形的 displace 取代，置换
likewise 同样地，照样地
oval 椭圆的
evolution 发展，演变
accompany 伴随，陪伴
stationary 固定的
sequence 顺序，次序
impetus 推动力，促进
adoption 采用
outlay 花费，指出
conventional 传统的，常规的
blooming train 初轧机组
productivity 生产力，生产率
consistency 一致性
inherent 固有的，内在的
otherwise 其他方面的
surfacing 表面加工，表面处理
True or False
1.Since steel was first produced in a liquid state over 200 years ago,
it has been almost invariably the practice to cast it into rectangular blocks by ingot casting, from which the desired finished shape is obtained by subsequent hot or cold working.
2.This method of continuous-casting is characterized by the
following: (1) A large amount of capital is invested in moulds, bottom plates, and locomotives; (2)…
3.Since the 1860s, continuous casting has steadily displaced ingot
casting.
4.The reason for ingot casting systems are: (1)lower investment
outlay compared with that for a blooming train; (2) more productivity than with conventional ingot-casting.
5.The dummy bar is either lifted to one side of the machine or hosted
on to the ramp above the machine.
英文自我介绍合集(大黄蜂资料大集合)
General Introduction I am a third year master major in automation at Shanghai Jiao Tong University, P. R. China. With tremendous interest in Industrial Engineering, I am writing to apply for acceptance into your Ph.D. graduate program. Education background In 1995, I entered the Nanjing University of Science & Technology (NUST) -- widely considered one of the China?s best engineering schools. During the following undergraduate study, my academic records kept distinguished among the whole department. I was granted First Class Prize every semester,In 1999, I got the privilege to enter the graduate program waived of the admission test. At the period of my graduate study, my overall GPA(3.77/4.0) ranked top 5% in the department. In the second semester, I became teacher assistant that is given to talented and matured students only. This year, I won the Acer Scholarship as the one and only candidate in my department, which is the ultimate accolade for distinguished students endowed by my university. Presently, I am preparing my graduation thesis and trying for the honor of Excellent Graduation Thesis. Research experience and academic activity When a sophomore, I joined the Association of AI Enthusiast and began to narrow down my interest for my future research. With the tool of OpenGL and Matlab, I designed a simulation program for transportation scheduling system. It is now widely used by different research groups in NUST. I assumed and fulfilled a sewage analysis & dispose project for Nanjing sewage treatment plant. This was my first practice to convert a laboratory idea to a commercial product.
名家资料英文介绍：奥斯卡·王尔德 Oscar Wilde
Oscar Wilde (1854-1900), Irish poet and dramatist whose reputation rests on his comic masterpieces Lady Windermere's Fan温夫人的扇子(1892) and The Importance of Being Earnest认真的重要性(1895). Among Wilde's other best-known works are his only novel The Picture of Dorian Gray多利安?格雷的画像(1891) and his fairy tales especially "The Happy Prince." Wilde was born on October 16, 1854 in Dublin to unconventional parents - his mother Lady Jane Francesca Wilde (1820-96), was a poet and journalist. His father was Sir William Wilde, an Irish antiquarian古物研究者,收集古物者（antiques）, gifted writer, and specialist in diseases of the eye and ear. Wilde studied at Portora Royal School, Enniskillen, County Fermanagh (1864-71), Trinity College, Dublin (1871-74) and Magdalen College, Oxford (1874-78). In 1878 Wilde received his B.A. and in the same year he moved to London. His lifestyle and humorous wit soon made him the spokesman for
自我介绍(英文版)
面试 自我介绍英文版 面试自我介绍英文版：For reference onlyGood morning ! Everyone! (or Ladies and gentlemen) It is my great honor to have this opportunity to introduce myself. and I hope I could make a good performance today, eventually become a member of your school. Now let me introduce myself please. I’m a graduate student from MAOMING UNIVERSITY . My name is TOM ,21 years old. , born in MAOMING. GuangDong province . My major is English, and I will graduate this June. In the past 3 years,I spent most of my time on English studying and practise. I have a good command of both spoken and written English and past CET-4 with a ease. Skilled in use of Office 2003, excel. My graduate school training combined with my cadet teacher should qualify me for this particular job. Although perhaps I’m not the best among the candidates, but with my strong knowledge background and full enthusiasm for education, I am sure I will satisfy you well.
上海著名景点英文介绍
上海著名景点英文介绍 Document serial number【KK89K-LLS98YT-SS8CB-SSUT-SST108】
※S h a n g h a i O r i e n t a l P e a r l T o w e r The Oriental Pearl Tower is a in , . The Oriental Pearl Tower is located at the tip of in the district, by the side of , opposite of . It was designed by the Shanghai Modern Architectural Design Co. Ltd. Principal designers are Jiang Huan Chen, Lin Benlin and Zhang Xiulin. Construction began in 1990 and the tower was completed in 1994. At 468 m (1,535 feet) high, it was the tallest structure in (excluding ; see ) from 1994–2007, when it was surpassed by the . The spheres in the tower The tower features 11 spheres, big and small. The two largest spheres, along the length of the tower, have diameters of 50 m (164 ft) for the lower and 45 m (148 ft) for the upper. They are linked by three columns, each 9 m (30 ft) in diameter. The highest sphere is 14 m (46 ft) in diameter. The entire building is supported by three enormous that start underground. Observation levels The tower has fifteen observatory levels. The highest (known as the Space Module) is at 350 m (1148 ft). The lower levels are at 263 m (863 ft) (Sightseeing Floor) and at 90 m (295 ft) (Space City). There is a at the 267 m (876 ft) level. The project also contains exhibition facilities, restaurants and a shopping mall. There is also a 20-room hotel called the Space Hotel between the two large spheres. Antenna spire An , broadcasting TV and radio programs, extends the construction by another 118 m (387 ft) to a total height of 468 m (1,535 ft). Chinese symbolism in the design The design of the building is said to be based on a verse of the poem Pipa Song by about the wonderful sprinkling sound of a instrument, like pearls, big and small falling on a plate. However, the designer Jiang Huancheng says that he did not have the poem in mind when designing the tower. It was the chief of the jury board who said it reminded him of that poem. ※ Shanghai World Financial Center
连铸机技术总结
附件1：总论 附件1 总论
目录 1. 概述 (1) 2. 依据 (1) 3. 设计原则 (1) 4. 设计范围 (2) 5. 工厂基本条件 (2) 6. 生产能力及产品大纲 (4) 7.4#连铸机设计概要 (9) 8 能源介质指标 (16) 9 工厂设计部分 (22) 10 卖方设计范围 (24) 11 卖方与买方主要交接点 (24) I
1. 概述 VISAKHAPATNAM钢厂（VSP）是印度第一家沿岸综合钢厂，为印度ANDHRA PRADESH的VISAKHAPATNAM的RASHTRIYA ISPAT NIGAM LIMITED (RINL)所有。VSP当前经营1号炼钢厂，生产能力为350万吨/年。1炼钢在1992年调试，稳定生产三百五十万吨钢水。 VISAKHAPATNAM的RINL计划进行扩建，从现在的三百五十万吨/年钢水提高到七百三十万吨/年钢水，分为两期。 在1期，新建2炼钢年产280万吨工程正在执行中。2炼钢设计安装额外设施，产量为1百万吨/年，以提高能力到380万吨/年。 在2期，通过安装第三座工程容量为150t的BOF以及煤气净化设备和连铸设备，生产能力提高到380万吨/年。 在期扩建工程中，计划安装1 5流大方坯以及圆坯连铸机生产大方坯和圆坯，这些坯料供应给无缝管轧机（RINL考虑）和结构钢轧机进一步加工成成品。该连铸机应配备有最新工艺技术，生产大约100万吨/年连铸产品。 2. 依据 2.1 730万吨/年钢水扩建工程，2炼钢4#连铸机及其辅助设备技术规格书（包号No. 002）技术规格书No. VSP-7.3-PRS-002，C部分第二卷。 3. 设计原则 3.1 尽量采用已有的成熟技术，注重技术的实用性、可靠性、经济性和先进性； 3.2 设备选型参照炼钢厂同类设备，降低备件存储压力及生产成本； 3.3 尽量利用现有设施，节省工程投资； 3.4 改造工程尽量不影响或少影响生产； 3.5 工艺布置合理，物流顺畅，有利于新钢钒股份有限公司今后的发展； 3.6 本工程中的环境保护、安全、工业卫生、消防设施严格按照有关的国家标准、规范执行，与主体工程同时设计、同时施工、同时投产。 1-1
AT89C51英文介绍资料
AT89C51 Description The AT89C51 is a low-power, high-performance CMOS 8-bit microcomputer with 4K bytes of Flash Programmable and Erasable Read Only Memory (PEROM). The device is manufactured using Atmel’s high density nonvolatile memory technology and is compatible with the industry standard MCS-51? instruction-set and pinout. The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C51 is a powerful microcomputer which provides a highly flexible and cost effective solution to many embedded control applications. Features ?Compatible with MCS-51? Products ?4K Bytes of In-System Reprogrammable Flash Memory –Endurance: 1,000 Write/Erase Cycles ?Fully Static Operation: 0 Hz to 24 MHz ?Three-Level Program Memory Lock ?128 x 8-Bit Internal RAM ?32 Programmable I/O Lines ?Two 16-Bit Timer/Counters ?Six Interrupt Sources ?Programmable Serial Channel ?Low Power Idle and Power Down Modes The A T89C51 provides the following standard features: 4K bytes of Flash,128 bytes of RAM, 32 I/O lines, two 16-bit timer/counters, a five vector two-level interrupt architecture, a full duplex serial port, on-chip oscillator and clock circuitry. In addition, the AT89C51 is designed with static logic for operation down to zero frequency and supports two software selectable power saving modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port and interrupt system to continue functioning. The Power-down Mode saves the RAM contents but freezes the oscillator disabling all other chip functions until the next hardware reset.
美国著名景点英文介绍
1、华尔街 Wall Street is the name of a narrow street in lower Manhattan in New York City, running east from Broadway downhill to the East River. Considered to be the historical heart of the Financial District, it was the first permanent home of the New York Stock Exchange（纽约证券 交易所）. The phrase "Wall Street" is also used as a metonym（换喻词） to refer to American financial markets and financial institutions as a whole. Most New York financial firms are no longer headquartered on Wall Street, but elsewhere in lower or midtown Manhattan, Fairfield County, Connecticut, or New Jersey. JPMorgan Chase, the last major holdout, sold its headquarters tower at 60 Wall Street to Deutsche Bank in November 2001. 2、自由女神 Statue of Liberty Liberty Enlightening the World, known more commonly as the Statue of Liberty, is a statue given to the United States by France in 1885, standing at Liberty Island in the mouth of the Hudson River in New York Harbor as a welcome to all visitors, immigrants, and returning Americans. The copper statue, dedicated on October 28, 1886, commemorates the centennial of the
中国山的介绍 英文版
The Mountains With Resorts in the US ------Group four 100501 Members : 吴伟慧080520100019 范秀秀080520100018 阮丽云080520100016 李华080520100015
The Mountains in the US Every nation possesses unique features ,so does the US. The mountains in the US are very attractive and famous all over the world. Now we come to see the Mountains in the US.In the western North America,the Rocky Mountains are a major mountains range.In Eastern North America,there is the Appalachian Mountains.The Cordillera located in the West America.And the Mountain McKinley in the Alaska located in the North America.These four Mountains are the famous mountains in the US. The Cordillera is the longest drape ridge in the world.It is about 15,000 kilo miles.There are many volcanoes and earthquakes.It concludes Andes Mountains 、Coast Mountains Sierra Nevada Mountain and Rocky Mountain.The mineral resources has the continent or world significant.And there are many rare animals,such as mink,lynx,armadillo and so on.Inside,the Mount Whitney is 4418 meters high which is the highest mountain in the America. However,in China,the highest mountain is the Qomolangma is 8844.43 meters high.It is also the highest
英语自我介绍资料
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梵高英语简介
Something about Vincent Vincent Willem van Gogh was a post-Impressionist painter of Dutch origin whose work, notable for its rough beauty, emotional honesty and bold color, had a far-reaching influence on 20th-century art. Van Gogh began to draw as a child, and he continued to draw throughout the years that led up to his decision to become an artist. He did not begin painting unti l his late twenties, completing many of his best-known works during the last two years of his life. In just over a decade, he produced more than 2,100 artworks, consisting of 860 oil paintings and more than1,300 watercolors,drawings, sketches and prints. His work included self portraits, landscapes, still lifes, portraits and paintings of cypresses, wheat fields and sunflowers. Van Gogh spent his early adulthood working for a firm of art dealers,. One of his early aspirations was to become a pastor and from 1879 he worked as a missionary in a mining region in Belgium where he began to sketch people from the local community. In 1885, he painted his first major work The Potato Eaters.. Later, he moved to the south of France and was influenced by the strong sunlight he found there. His work grew brighter in color, and he developed the unique and highly recognizable style that became fully realized during his stay in Arles in 1888. After years of painful anxiety and frequent bouts of mental illness,[1][2] he died aged 37 from a gunshot wound, generally accepted to be self-inflicted (although no gun was ever found).[3][note 2] His work was then known to only a handful of people and appreciated by fewer still. Quarrel with firend
企业介绍(英文版)
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商业资料英文自我介绍合集篇
A thesis submitted to in partial fulfillment of the requirement for the degree of Master of Engineering 自我介绍合集篇 英语自我介绍范文 General Introduction I am a third year master major in automation at Shanghai Jiao Tong University, P. R. China. With tremendous interest in Industrial Engineering, I am writing to apply for acceptance into your Ph.D. graduate program. Education background In 1995, I entered the Nanjing University of Science & Technology (NUST) -- widely considered one of the China’s best engineering schools. During the following undergraduate study, my academic records kept distinguished among the whole department. I was granted First Class Prize every semester,In 1999, I got the privilege to enter the graduate program waived of the admission test. At the period of my graduate study, my overall GPA(3.77/4.0) ranked top 5% in the department. In the second semester, I became teacher assistant that is given to talented and matured students only. This year, I won the Acer Scholarship as the one and only candidate in my department, which is the ultimate accolade for distinguished students endowed by my university. Presently, I am preparing my graduation thesis and trying for the honor of Excellent Graduation Thesis.
景点英文介绍
Huanren on second swims Traveling schedule arrangement The first day： 6:00 am start out from the first senior middle school, the 6:30 minute starts out from the ninth Senior middle school, start driving to score points: huanren (Drive about 5 hours ), After lunch visit the largest artificial lake in liaoning province and freshwater fish farms ——Huan long lake, Landscape has three levels peak, cuckoo island, long GangZi, horse faces stone, the natural landscape (Visit time about 50 minutes), And then the first hole-WangTianDong north to visit , The landscape has the Saint palace wonderful chart, Shi Qi, the victoria regia to hang upside down, to look at the mountain, the labyrinth and so on(Tour time approximately 1.5 hours), After the supper, moves in the hotel. (lunch, supper) lives: Huanren The second day： After breakfast visit the world cultural heritage, koguryo first capital ——WuNvShan mountain city ，The mountain major landscape has: Simon, the site, tai chi pavilion, tianchi, DianJiangTai.then,; Ancient city wall, etc （Tour time approximately 4.5 hours），After descending the mountain, visits the Mt. Wunv Milan wine business demonstration garden，Guests can taste the free all characteristics wine （Time about 40 minutes ），After lunch to return to warm home. (breakfast, lunch) The expense contains Scenic spot : The first listed attractions tickets car : Entire journey air conditioning tourist car (entire journey high speed) Dining: A breakfast three full meal(Ten people a table for dinner, eight vegetables a soup, excluding drinks ), Dinner 30 yuan meal standard accommodation : Double standard room(Independent toilet bath alone ) Guide service : Chinese tour guide Insurance: Travel agency liability insurance (400000 RMB/person ) Helpful hints :