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机械专业论文英译汉500字

发布时间:2021-06-13 12:28:37

❶ 急求一篇机械类文章中英文对照翻译(急救!)

in the layout,a single strand straightener is shown,which should be the proper design for this range of procts.please clarift and correct.
it is mentioned that in housingless stands,the load bearing angle of bearing are 120 degrees,twice as much as conventional stands.Why this angle is any different from conventional stands.
are all Universal stands identical?The roll sizes do not change from the first stands of the tandem mill to the last?
Cooling bed length of 78 meters is too short.We should add anonther 12 or 24 meters to it.Cooling calculations should be done with a site ambient temperature of 40℃,which is normal in summer time.
With a roller interspacing of 1200mm and 105 rolls,the length of bed run-in table would be more than 100 meter,as it is mentioned in the text.Please clarift.
Again it is assumed that the straigthener is amulti-strand one(discharging from bed in layers).Please clarift.
it is mentioned that the run out table length is 66meter. How this would be possible while the length of the bar on cooling bed could be close to 78 meters?The length of run-out should be adjusted after deciding about the bed length(90 or 102 meters)
在地面区划中,滨弄直被显示,这应该是 procts.please clarift 的这一范围的适当设计而且改正。
一般提到,在无住屋的台子,举止的负荷举止角度是 120 度,两次像传统的台子一样的很多。为什么这一个角度是任何的不同传统的台子。
所有的全世界的台子是同一的吗?卷物大小不从纵排压榨机的第一个台子改变到最后?
78 公尺的冷却床长度太短。我们应该把 anonther 12 or 24 公尺加入它。冷却计算应该与 40 的位置周围温度一起做℃,在夏天时间,常态是哪一个。
藉由滚筒 1200 毫米和 105个卷物的间隔,床的长度跑 - 在桌子中会不只是 100 公尺,当它被在本文提到之时。请 clarift 。
再一次它被假定 straigthener 是 amulti-搁浅一.(在层中从床卸货)请 clarift 。
它被提到奔跑出自桌子长度是 66 公尺。 当在冷却的床上的酒吧的长度可能是接近 78 公尺的时候,这会如何是可能的?奔跑的长度-在决定有关床长度的事之后在外应该被调整 (90 or 102 公尺)

机械专业---毕业论文---英文翻译

市场上有关门的词典,网上好像没有太专业而全面的吧,

❸ 求:机械专业英语论文翻译:

火花加工( EDM )普遍进行了液体介质. 它是一种热过程中材料去除连续放电之间发生的一个电极 工件神色介质流体. 每放电ionizes局部血浆运河,那里温度变得非常高(高达1000◦三) 领导与融合沸腾金属既面临材料[1] . 利用液态一直被视为必不可少的稳定性和效率的过程中, 因为它是已知的液体作为冷却介质中的放电间隙和拆除并冲水 加工出碎片的工作差距. 因此,它扮演的一个最重要作用的材料去除机理. 电火花,是一个有益的加工方法. 它具有很大的优势,在加工工件形状特殊或难加工材料,如塑料模具, 冲模,硬质合金材料和工程材料〔2,3〕. 现在它已广泛应用于制造工程. 尽管他们广泛使用在工业今天,电火花有一些缺点. 其中最严重的缺点是,它可能会导致环境的污染[4] . 据悉,电火花可产生废弃物介质液体,它是非常有害的, 我们应该尽量避免让融入周围的环境. 在另一方面,液体介质一般煤油为基础油, 它会分解并释放有害气( CO和CH4 )在电火花 这将会伤害到健康的运营. 环保原因 绿法电火花未经污染已成为一个热门研究课题,在最近字. 电火花天然气是一种新的加工方法是由邦枝在1997年[5] . 在该方法中,电火花加工是实现天然气代替煤油基础油,使污染降低. 在这种新方法的出现,全世界感到震惊. 把它当作一个最重要的方法具有良好的前景. 但是这种方法有一个致命的弱点,缺乏稳定及低材料去除率( MRR值) . 为克服人手不足的电火花加工气,一种新的方法,超声波振动电火花加工( uedm )在天然气, 在此基础上开发. (翻译软件

❹ 机械专业论文翻译

上海论文网
www.shlunwen.com
上海学位论文网:
www.xwlunwen.com
晋升回论文网:
www.jinshenglunwen.com
可以
去了解答下

❺ 急求机械专业相关英文论文(带中文翻译)

这里有很多的,你可以找下有没有?我找了好长时间才找到的哦.

中文免费论文地址集锦
一、 综合类
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2、学生大论文中心

http://www.studa.com/newpaper/

3、蜂朝无忧论文网
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门类很全。
4、论文下载中心
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门类很全。
5、论文帝国
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二、 教育类
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以中小学教育为主,基础教育、英语教学文章居多。
2、教育教学论文网

http://www.minaol.com/gb/art/ttd/index.asp

以教育论文为主,包含:语文论文 美术论文 物理论文
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素质论文 医学论文 电子电器学 思维科学 计算机论文
活动课教学 书法篆刻论文 创新教育研究 心理健康教育
西部教育论文 信息技术论文
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以科技类为主。
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以财经经济管理类为主。
3、法律图书馆
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文如其名。
4、法学论文资料库
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文如其名。
5、中国总经理网论文集
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13、法律帝国:
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四、 论文写作教学类
1、学术论文
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其实是学术论文的写作网站。
五、 博硕士论文
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实际上就是万方的论文统计。
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3、北京大学学位论文样本收藏
http://www.lib.pku.e.cn/xwlw.html
4、学位论文 (清华大学)
http://www.lib.tsinghua.e.cn/new/thesis.html

]
中国科技论文在线http://www.paper.e.cn/
论文中国 :http://www.chinawrite.com/
新浪论文网分类:http://dir.sina.com.cn/search_dir/jy/lw/
中国论文联盟:http://www.lwlm.com/
大学生论文库http://www.syiae.com/lunwen
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毕业论文网:http://www.bylw.com/
学位论文:http://www.lib.tsinghua.e.cn/NEW/thesis.html
无忧论文网:http://www.51lunwen.com/
北京语言文化大学论文库:http://lib.blcu.e.cn/dt1000/bys/bys.htm

❻ 机械专业英语论文

3K字的,
这个 问题不是很大,
吧,给你帮忙的,给你的,
做的,

❼ 机械专业论文英语翻译 高分急求~!

滚珠丝杠传动中最常用的高速加工机床,因为他们的高刚度,它允许精确定位的工具,切削力。带宽的环路是一种重要的因素,而设计的控制器? uences高速定位精度。带宽可扩大了增加反馈收益,直到结构谐振所激动。此外,非线性行为的存储卡螺母和干扰,如外部切削力、非线性摩擦、转矩波动影响运动精度。在这篇文章中,由于结构振动问题,非线性摩擦、转矩波动,和其他外部干扰都在一个系统化的方式。

❽ 机械专业论文英语翻译 高分急求

常见的技术来,以处理结源构共振已命令输入成型,前馈prefiltering弹道命令,并陷波的控制信号。在这些办法,振动衰减是基于模型的动态。然而,频率和阻尼的结构模式,以及相当于惯性特征,随着时间的推移可能会有所不同,也作为一个功能的机器配置。解决了这些问题,通过增益调度和鲁棒控制器design.Disturbances如非线性摩擦进行建模和合理补偿的前馈接近,这缓解了象限故障的议案逆转。转矩脉动,导致不准确的扭矩传递,也可作为一个功能模型的电机位置和扭矩命令,补偿控制器。干扰的适应战略可以部分补偿剩余的干扰,这是无法预测通过使用一种模式。干扰适应还提供抗驱动器参数变化,其中取消了知觉和等同打扰的适应带宽。

❾ 谁能帮我翻译一篇机械专业的英语论文,不要直接用翻译机,1500字左右,满意的加分!

Effect of Hot Rolling Process on Microstructure
and Properties of Low-Carbon Al-Killed Steels
热轧工艺对于低碳涂铝钢的微观结构以及性能的影响。

Proced Through TSCR Technology
S.K. Paul, U. Ahmed, and G.M. Megahed
(Submitted October 29, 2009; in revised form April 27, 2010)
低碳涂铝钢经过薄板坯连铸连轧技术制造(S.K. Paul, U. Ahmed, and G.M. Megahed
2009年10月29号提交,2010年4月27号修订)

Low-carbon Al-killed hot rolled strips for direct forming, cold rolling, and galvanizing applications are proced from the similar chemistry at Ezz Flat Steel (EFS) through thin slab casting and rolling (TSCR) technology.
用于直接成型,冷轧,以及镀锌应用的低碳热轧条与埃智钢铁公司的扁钢薄板坯连铸连轧技术有着相似的化学处理过程。

The desired mechanical and micro structural properties in hot bands for different applications are achieved through control of hot rolling parameters, which in turn control the precipitation and growth of AlN.
通过控制热轧参数,并相应地控制沉淀物以及氮化铝的增长,能够获得热扎带的预期的机械和微结构性能,用于不同的应用。

Nitrogen in solid solution strongly influences the yield strength (YS), ctility, strain aging index(SAI), and other formability properties of steel.
固溶体的氮严重影响抗屈强度,延展性,应变指数以及钢的其他成型性能。

The equilibrium solubility of AlN in austenite at different temperatures and its isothermal precipitation have been studied. To achieve the formability properties for direct forming, soluble nitrogen is fixed as AlN by coiling the strip at higher temperatures.
我们已经研究过在不同温度的奥氏体氮化铝的溶解度以及等温过程的沉淀物。为获得用于直接成型的成型性能,在高温下将钢条盘成螺旋形,填充可溶性氮作为氮化铝。

For stringent cold forming, boron was added below the stoichiometric ratio with nitrogen, which improved the form ability properties dramatically.
为了冷成型,将硼以理想配比值与氮进行配比,这很大程度上提高了成型性能。

The requirements of hot band for processing into cold rolled and annealed deep drawing sheets are high SAI and fine-grain microstructure.
用于加工成高指标以及粒状结构的冷轧以及退火的深冲压板的热轧钢的要求

Higher finish rolling and low coiling temperatures are used to achieve these.
未获得以上目的,需要更高的轧制以及低卷取温度。

Fully processed cold rolled sheets from these hot strips at customer send have shown good formability properties.
从这些热条钢完全加工而成的冷轧板,客户反馈说有很好的成型性能。

Coil break marks observed in some coils ring uncoiling were found to be associated with yielding phenomenon.
在一些盘卷上我们观察到了卷裂的印记,这关联到屈变现象。

The spike height (difference between upper and lower yield stresses) and yield point elongation (YPE) were found to be the key material parameters for the break marks.
尖峰的高度(上部和下部的屈服应力的差异)以及屈服点延伸是导致破裂印记的主要的材料性能。

Factors affecting these parameters have been studied and the coiling temperature optimized to overcome the problem.
影响这些参数的因数已被研究,我们会将卷取温度最优化来克服这个问题。

❿ 急求一篇机械类英文论文,英文5000字以上,要有中文翻译呀,急急急!~~~~~

中国是世界上机械发展最早的国家之一。中国的机械工程技术不但历史悠久,而且成就十分辉煌,不仅对中国的物质文化和社会经济的发展起到了重要的促进作用,而且对世界技术文明的进步做出了重大贡献.传统机械方面,我国在很长一段时期内都领先于世界。到了近代由于特别是从18世纪初到19世纪40年代,由于经济社会等诸多原因,我国的机械行业发展停滞不前,在这100多年的时间里正是西方资产阶级政治革命和产业革命时期,机械科学技术飞速发展,远远超过了中国的水平。这样,中国机械的发展水平与西方的差距急剧拉大,到十九世纪中期已经落后西方一百多年。

新中国建立后特别是近三十年来,我国的机械科学技术发展速度很快。向机械产品大型化,精密化、自动化和成套化的趋势发展。在有些方面已经达到或超过了世界先进水平。总的来说,就目前而言中国机械科学技术的成就是巨大的,发展速度之快,水平之高也是前所未有的。这一时期还没有结束,我国的机械科学技术还将向更高的水平发展。只要我们能够采取正确的方针、政策、用好科技发展规律并勇于创新,我国的机械工业和机械科技一定能够振兴,重新引领世界机械工业发展潮流。

就小型夯实机械而言:
上世纪60年代以前,我国小型夯实机械非常缺乏,很多小型场地的夯实基本上采用人工夯实。

上世纪60年代初期,长沙建设机械研究所与北京建筑工程学院等单位合作,在群众性技术革新成果的基础上总结发明了具有中国特色的蛙式夯实机,1962年获国家科技发明奖。蛙式夯实机结构简单,维修、使用方便,很快成为我国60年代夯实机械的主导产品。据不完全统计蛙式夯实机累计产量达到50000多台,在我国经济建设中发挥了重要作用。70年代以后,蛙式夯实机逐渐被性能更先进的振动冲击夯和振动平板夯所替代,目前蛙式夯实机已经很少,基本被淘汰。

1964年,长沙建设机械研究所开发了HB120型内燃式夯实机,开始由上海工程机械厂生产,后来主要由津市洞庭工程机械厂生产,年产量200台左右。80年代,内燃式夯实机产品质量有较大提高,曾出口东南亚和非洲地区。90年代以后,内燃式夯实机产销售量也在逐渐减少,目前只有少数小型民营企业生产。

1977年,长沙建设机械研究所和柳州市建筑机械厂开发了我国第一台HZR250型和HZR70型振动平板夯,这两种产品分别于1979 年和1982年通过了由建设部组织的鉴定。随后义乌建筑机械厂、四平建筑机械厂、安阳振动器厂、津市洞庭工程机械厂等多家企业都开始生产振动平板夯。1986年长沙建设机械研究所又开发了较大的HZR450型振动平板夯。上世纪90年代以后,振动平板夯在我国有了较快的发展,产品品种、规格和生产企业增多,国外的振动平板夯陆续进入中国市场。

1983年,长沙建设机械研究所和湖北振动器厂联合开发了我国第一台HZR70型振动冲击夯,1984年通过了由建设部组织的鉴定,1985年获建设部科技进步三等奖。由于振动冲击夯具有压实效果好、生产率高、体积和重量小、轻便灵活等突出特点,深受用户欢迎,得到了迅速的推广使用,并很快发展到资江机器厂、新乡第三机床厂和津市洞庭工程机械厂等几十家企业生产。振动冲击夯虽然比振动平板夯开发晚,但发展速度、产销量和使用广泛性比振动平板夯大得多,目前已成为我国夯实机械中产销量最大的主导产品。上世纪90年代以后,国外的振动平板夯陆续进入中国市场。

振动冲击夯和振动平板夯在我国的成功开发,不仅为我国建设施工部门提供了性能先进的夯实机械,取得了良好的经济效益和社会效益,而且使我国夯实机械技术向前跨进了一大步,缩短了与世界先进水平的差距,促进了我国压实机械的发展。

机械加工而言:
热加工 铸造 据考古发现,在北京平谷、昌平、房山等处曾出土了公元前16世纪(商代)的青铜礼器。 明永乐年间(1403~1424年),北京制造出享誉世界的明永乐大铜钟(46.5吨)和钟楼大铜钟(63吨)及铁钟(25吨),采用分炉熔化、地坑造型和陶范法铸造。 20世纪50年代以前,北京在铸造上采用粘土砂手工造型。1955年,北京第一机床厂开始采用漏模造型、双面模型型板及铁型板和标准砂箱造型。1965年,开始采用塑料模型。 1980 年,北京市机电研究院与北京玛钢厂研制成功工频无芯塞杆底注式保温浇注电炉。1982年,该院与北京机床铸造二厂研究成功冲天炉风口吹氧技术。 1985~1988年,北京机床研究所试验成功浮动端面密封环的压力铸造工艺。
锻压 1959年,北京第二通用机械厂(后改名北京重型机器厂)建成2500吨水压机。1971年,该厂制造出6000吨水压机,这是当时北京最大的锻压设备。 1968~1979年,北京起重机器厂先后采用300吨油压机和2000吨油压机制造出起重机吊臂和大型覆盖件。 80年代,北京市机电研究院和北京市模具中心研制出一系列高精度多工位冲裁模具,接近或达到进口模具水平,改变了北京精密冲裁模具依赖进口的局面。
热处理 1949年前,北京已采用电炉、盐溶炉、热电偶等手段进行零件退火、回火、淬火、正火、调质、渗碳等热处理。 1956年,北京第一机床厂开始采用高频感应淬火。1961年,北京第二机床厂开始采用气体氮化淬火。1969年,北京量具刃具厂开始采用光亮淬火。 1978年,北京机床研究所研究完成机床导轨表面接触淬火工艺及设备、淬火质量检查技术条件的研究。1979年,铁道科学研究院和中国科学院力学研究所等合作完成大功率柴油机缸套表面的激光改性处理的研究。 1979年,北京市机电研究院研制成功千瓦级二氧化碳激光器,并于80年代初分别应用于汽缸套和邮票印刷设备的激光热处理。其中,清华大学、北京市机电研究院、北京邮票厂共同完成邮票厂七色机打孔器表面激光强化研究。 1984~1990年,北京市热处理研究所研究成功真空热处理、气体渗碳微机控制技术(与北京航空航天大学合作)、稀土软氮化、粉末冶金制品表面强化、煤油加甲醇小滴量法微机可控渗碳、固体渗硼、渗碳过程微机辅助工艺设计及跟踪控制系统等热处理新技术,并应用于生产。 焊接与切割 1949年,北京已有气焊、电弧焊及氧乙炔火焰切割等手工作业。 1963年,北京金属结构厂与一机部机械科学研究院合作开发出钨极氩弧焊,并实现了氮气等离子切割不锈钢。1964年,用直流钨极氩弧焊及焊丝合金化技术解决了核工业用倾斜式电解糟纯镍焊接。 1966年,北京金属结构厂开发出了使被焊球体旋转的埋弧自动焊。1968年,该厂开始以液化石油气代替乙炔切割。 80年代初,清华大学发明了新型MIG焊接电弧控制法,在控制电弧技术上取得突破。 80年代初,北京城建设计院等完成液化石油气移动式气压焊轨技术的研究和应用。 1990年,北京金属结构厂开始采用数控精密切割和具有光电跟踪及数控寻踪读入自动编程的大功率等离子切割技术。
可见,我国机械发展在近代发展其迅速。

China is the world's first national machinery development. Chinese mechanical engineering technology not only has a long history and splendid achievements in Chinese is not only the material culture and social economic development plays an important role in the world, and to promote the progress of civilization, technology has made great contribution to Chinese traditional machine. And in a long period ahead in the world. In modern times, especially from the early 18th century, e to the nineteen forties, e to the economic and social reasons, such as the China machinery instry, stagnation, in the 100 years is western bourgeois political revolution and instrial revolution, mechanical science and technology is developing rapidly, and far more than the level of China. So, China mechanical development level and the western gap widens, sharply to the 19th century middle behind western one hundred years.

After the founding of new China, especially in the past 30 years, our country's mechanical science and technology development speed. To the mechanical proct large-scale, precision, automation and discusses the trend of development. In some aspects has reached or exceeded the world advanced level. Generally speaking, currently China mechanical science and technology achievement is huge, developing fast, high level of unprecedented. In this period, China has no end of mechanical science and technology will develop to a higher level. As long as we can adopt the correct policy, with good technology development and innovation, our machinery instry and mechanical technology can revitalize, leading to the development trend of mechanical instry.

Just small ramming machinery:
In the 1960s, China mechanical very small tamp lack, many small venues ramming basically USES artificial ramming.

Early 1960s, changsha construction machinery institute and Beijing architectural engineering institute, etc., the technical innovation achievements in mass on the basis of summing up Chinese characteristic invented the breaststroke ramming machine, 1962 exceeded national science and technology. The breaststroke ramming machine structure is simple, easy to use and maintenance in 1960s, soon became the dominant procts to consolidate machinery. According to not complete count breaststroke tamp cumulative yield reached more than 50,000 machine, in the economic development of our country has played an important role. Since 1970's, the breaststroke ramming machine was graally more advanced performance of vibration shock ram and vibrating plate ram, now replaced by laying machine has rarely breaststroke, basically be eliminated.

In 1964, changsha construction machinery institute HB120 developed movable type, type of Shanghai began laying machine, engineering machine proction mainly by tianjin municipal later, annual proction engineering machinery dongting about 200. In the 1980s, movable type ramming machine proct quality has increased greatly, have exported to southeast Asia and Africa. Since 1990s, internal-combustion type ramming machine proction sales, and graally decreased in only a few small private enterprise proction.

In 1977, changsha construction machinery factory buildings and developed in liuzhou HZR250 type and the HZR70 type vibrating plate ram, these two kinds of procts in 1979 and 1982 passed by the ministry of construction of the organization. Then yiwu building construction machinery factory, siping, anyang vibrators factory, tianjin municipal engineering machinery dongting and other enterprises have started procing vibrating plate ram. In 1986, changsha construction machinery research and develop a larger HZR450 type of vibrating plate ram. Since 1990s, vibrating plate ram in our country has developed very quickly, varieties of procts, specifications and increase proction enterprises, foreign vibrating plate ram graally to enter the Chinese market.

In 1983, changsha construction machinery institute and the joint development of hubei vibration in the first HZR70 type vibration shock ramming, 1984, passed by the ministry of construction, organization construction technology progress in 1985 won prizes. Due to the vibration impact compaction result has good ramming, proctivity, high volume and weight of small, lightweight flexible outstanding characteristics, deeply user etc, obtained a rapid promotion, and soon ZiJiang development to the factory, xinxiang municipal engineering machine tool plant and tianjin dozens of dongting proction factory etc. Vibration shock ramming although than vibrating plate ram, but later development speed of development, proction and use of extensive than vibrating plate ram, has become the largest in China in the ramming machinery procts. Since 1990s, foreign vibrating plate ram graally to enter the Chinese market.

Vibration shock ramming and vibrating plate ram the successful development in our country, not only for our construction department provides advanced performance of mechanical, laying have achieved good economic benefit and social benefit, and make our ramming mechanical technology into a big step forward, shorten the gap with the advanced world level, promoting the development of compaction machine.

The mechanical processing:
According to the archaeological discovery, hot-working casting in Beijing pinggu, changping and so have proved that the 16th century BC shang dynasty (bronze objects. Ming yongle (1403-1424 years), Beijing proce world-renowned Ming yongle great 3-ton bell made (46.5 tons) and tower (63 tons of great 3-ton bell made of iron clock (25) and the furnace of melting, pit TaoFan model and method of casting. In the 1950s, Beijing based on clay sand castings in manual. In 1955, Beijing first machine tool plant began using leakage mould modelling, double-sided model and iron plate type plate and standard sand box modelling. In 1965, start using plastic model. In 1980, the institute and Beijing municipal electrical factory has successfully developed line frequency coreless bathroom plug stem bottom note type electric insulation casting. In 1982, hospital and Beijing the casting machine research cupola tuyere oxygen blowing technology. 1985-1988, Beijing institute of machine of floating end face seal ring by die successful test pressure casting process.
In 1959, Beijing second metalforming machinery general factory changed (Beijing) built 2500 ton heavy-ty hydraulic press. In 1971, the factory proced 6,000 tons, which is then Beijing hydrtesting biggest metalforming equipment. 1968-1979, Beijing hoisting machine factory has 300 tons of using hydraulic press 2000 tons and create crane and large panel. In the 1980s, Beijing institute of electrical and developed a series of Beijing mould centre high-precision cutting die, the multistage close to or to import mould level, changed Beijing precision punching moulds dependence on imports.
Before 1949, Beijing has heat treatment furnace, salt dissolved by thermocouples means furnace, quenching and tempering, parts of annealing, normalizing, quenching and tempering, carburizing and etc. In 1956, Beijing first began using high-frequency quenching machine tool plant. In 1961, the Beijing second machine tool plant began using gas nitriding quenching. In 1969, the following enterprise by Beijing gage start light quenching. In 1978, the complete machine tool research institute of Beijing guide surface contact quenching process and equipment, quenching condition of quality inspection. In 1979, scientific research institute of China academy of railway and mechanical institute of high-power diesel engine cylinder collaboration of surface modification of laser. In 1979, Beijing institute of electrical carbon dioxide laser is developed, and the kilowatt in early 1980s respectively applied in cylinder and stamp printing equipments of laser treatment. Among them, tsinghua university, Beijing, Beijing institute of electrical YouPiaoChang jointly completed YouPiaoChang seven color machine DaKongQi laser surface strengthening research. From 1984 to 1990, Beijing institute of vacuum heat treatment research, gas carburizing microcomputer control technology (Beijing university of aeronautics &astronautics and cooperation), rare earth soft nitriding, powder metallurgy procts surface strengthening, kerosene and methanol small drops of microcomputer control method of carburizing, solid boriding and carburizing process computer aided process planning and tracking control system, and the application of new technology heat in proction. Welding and cutting in 1949, Beijing has geo-drilling, electric welding and cutting etc oxyacetylene flame manual operation. In 1963, Beijing metal structure and YiJiBu mechanical science research cooperation to develop tungsten argon arc welding, and realize the nitrogen plasma cutting stainless steel. In 1964, the use of dc argon arc welding and tungsten wire alloying technology solved by tilting electrolysis instry worse pure nickel welding. In 1966, Beijing metal structure factory developed by rotating sphere of the submerged arc welding automatic welding. In 1968, the plant began to liquefied petroleum gas (LPG) instead of acetylene cutting. In the early 1980s, tsinghua university invented new MIG welding arc arc technology in control, control a breakthrough. In the early 1980s, the Beijing urban construction design completed liquefied petroleum gas (LPG) mobile pneumatic rail welding technology research and application. In 1990, Beijing metal structure factory to adopt CNC precision cutting and with photo-electricity tracking and CNC pursuit of high input automatic programming technology plasma cutting.
Visible, China mechanical development in modern development of its rapid.

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