型钢

With the development of the national economy, the request of the sharp steels's quality is higher than before.

随着国民经济的发展，对型钢产品数量的要求更高。

In the construction process, welds the H section for the correct assembly to provide the technical guidance.

在施工过程中，为正确组装焊接H型钢提供技术指导。

The objectives of this paper were to investigate the simulation and design of continuous multiple-station rolling forming process for a U-Section Steel Bar by CAE software-DEFORMTM Due to the limitation of elements number using a short strip 120mm went through all the stations to simulate the real continuous rolling forming on factory The roller gap was fixed as 0 30mm roll speed was 20 rad/sec and progressive angles were all equal for each rolling process which were the formed angle divided by by the number of station Three rolling processes were selected with 6 9 and 12 stations respectively During simulation processes two cases occurred Case A the strip was through a single station Case B the strip across two stations Because the strip laterals side was stretched and twisted during the process The model of case B closer to the practical process than case A and the calculated stress and strain on the tip of U section for case A were lower than these for case B by up to 15% From the result of case B for each process the stress for 12-station process was smallest 9-station process second and 6-station process next Because less-station can save larger cost and forming time but the bigger stress and strain for 6-station caused wrinkles on lateral sides not found on 9-station and 12-station Therefore 9-station process was a more suitable design than 12-station process smaller stretched and twisted and stress The progressive angles for 12-station was 7 5?

本文主要是以DEFORMTM有限元素软体模拟U型钢片连续道次成型与单一道次成型以确认单一道次模拟的是否可取代连续道次模拟之研究。因DEFORMTM 软体对於网格元素上的限制故使用较短素材120mm通过所有的成型站以模拟工厂实际连续成形方法。辊轮间隙固定为0 3mm；辊轮转速为20 rad/sec；弯曲角度的方法为将成型角度平均除以成型站数。有三种辊轮成型方式被选择分别为6站，9站，与12站。在模拟的过程中有两种现象会产生 Case A，素材通过单一成型站。Case B，素材会通过两个成型站。因为在模拟过程中素材的两端会有拉应力与扭力。Case B的模拟比Case A像实际的制程，并计算应力与应变在U型断面的Tip部中可发现Case A比Case B低约15%。从Case B的每站的结果可以得知，12站的成型应力最小，9站次之，6站最后。

A kind of super-thin fire proofing coating for steel structure is prepared,with the mixture of amino resin and acrylic resin as base resin,ammonium polyphosphate、melamine、pentaerythritol as fire retardant system,TiO_2 and SiO_2 as pigment and filling.

选用氨基树脂和丙烯酸树脂混合体系为基料，聚磷酸铵、三聚氰胺、季戊四醇为阻燃体系，钛白粉和硅石粉为颜填料，制备超薄型钢结构防火涂料，并研究了基料、阻燃体系、颜填料用量对防火涂料防火性能的影响。

In recent years the rapid expansion of industrial Chuan-ding at the same time, operating varieties also further extended to angle steel, H section steel and other fields.

近年来川鼎实业快速扩张的同时，经营品种也进一步延伸到角钢，H型钢等多个领域。

Steel angle is a general purpose pass, used in all kinds of steel structure, therefore its use scope is extremely widespread, and holds a greater proportion in the steel products production.

角钢是一种通用型钢，用于各种钢结构中，因此使用范围非常广泛，在钢材生产中占有较大的比重。

The average 85 per cent price increase agreed with Rio Tinto, the Anglo-Australian miner, was within the range of expectations, analysts said.

分析师表示，中国大型钢企与英澳矿业集团力拓商定的85%的平均涨幅在预期范围之内。

Bing the member of Housing Building Steel Structure Association of Chinese Steel Structure Association, we are professional manufacturer of automatic submerged arc welder and electroslag welder applicable for H section steel and box girder in steel structure industry.

我厂是中国钢结构协会房屋建筑钢结构协会会员单位，专业生产适合钢结构行业H型钢和箱型梁焊接的埋弧自动焊、电渣焊设备。

Analyses the features and the problems of the explosion door of the air shaft and improves the structural steel ring and the balance weight of door.

分析了煤矿风井防爆门存在的漏风、密封液选择、使用比较困难和开闭不便等问题及其原因，并针对这些问题对防爆门的型钢圈和平衡重锤进行了改进设计，实践证明，改造后的新型防爆门性能明显优于改造前，提高了煤矿风井防爆门的安全可靠性，具有一定的推广价值。

Its core products involve various specifications of electromechanically-hydraulically-integrated production lines for band steel snd section rolling.

以各种规格的机电液一体化的带钢、型钢轧制生产线为主导产品，及客户所需要的机电液产品的设计、开发、制造、技术转让、技术服务及技术咨询等为主的一个新型高科技

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。