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一、冷弯型钢在轨道交通车辆上的应用1.铁路货车用冷弯型钢自上个世纪80年代我国冶金部门推广铜磷系耐大气腐蚀钢起,冷弯型钢的研发生产就开始了。中国钢结构协会冷弯型钢协会对协调组织生产和推广使用做出很大的贡献。耐大气腐蚀钢和冷弯型钢逐渐被各钢铁用户所接受并迅速发展起来。对铁路部门来讲,当时铁路车辆用钢的问题是,一是腐蚀严重,造成车辆段修和厂修频繁,成本增大,车辆寿命短;二是热轧钢材笨重,造成车辆自重大,减低运输效率。例如,货车最主要承载件底架中梁,是用热轧槽钢或工字钢加焊上下盖板
First, the cold-formed steel in the rail traffic vehicles on the application of 1. Freight wagons with cold-formed steel Since the 1980s, China’s metallurgical sector to promote copper and phosphorus-based atmospheric corrosion-resistant steel, cold-formed steel R & D production began. China Association of Cold-formed Steel Structure Association to coordinate the production and promotion of the use of make a significant contribution. Weather-resistant steel and cold-formed steel gradually accepted by the steel users and rapidly developed. The railway sector, then the problem of steel for railway vehicles is that one is serious corrosion, resulting in frequent repairs and factory repairs, resulting in increased costs and short life of vehicles; secondly, bulky hot-rolled steel, resulting in heavy vehicles, reducing Transport efficiency. For example, the main truck bearing chassis beams, is the use of hot-rolled channel or IW welded upper and lower cover