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冲孔冷弯型材是一种新型钢材,由于能够减轻金属结构件的重量,且装配方便而被广泛应用。本文介绍了苏联切列波维茨冶金公司生产冲孔冷弯型材的独特工艺:①板卷在冲孔机组内冲孔;②已冲孔的带材在冷弯机组上成型。为使上述两个工序生产一致,必须提高冲孔的生产能力,因此,推荐采用辊式切冲机构。采用冲孔冷弯型材可以节省金属18～20%,显著降低制造金属结构件的总费用10～15%。
Punched cold-formed profiles are a new type of steel that is widely used due to its ability to reduce the weight of metal structures and ease of assembly. This article describes the unique process of producing the punched and cold-formed profiles by the Chevrolet Pivitz Company in the Soviet Union: ① coil punching in the punching unit; ② the punched strip is formed on the cold bending unit. In order to make the above two processes consistent in production, it is necessary to improve the productivity of punching, therefore, it is recommended to use roll-type punching mechanism. Punched cold-formed profiles can save 18 to 20% of metal, significantly reducing the total cost of manufacturing metal structures by 10 to 15%.