随着建筑工业化的蓬勃发展,钢筋混凝土预制构件的使用量不断扩大,连接这类构件用的预埋件的需要量,也不断增多。据统计,装配式厂房的预埋件占主厂房用钢量的13～17％。造价约占8％。当前,国内预埋件的焊接生产,多数是将钢筋预弯成H形后再焊在钢板上,这种作法,不仅耗用大量焊条、钢板产生焊接变形、生产率低、 With the vigorous development of the industrialization of construction, the use of reinforced concrete prefabricated components has continued to expand, and the demand for embedded components used to connect such components has also increased. According to statistics, the prefabricated parts of the assembly plant account for 13-17% of the steel used in the main plant. The cost is about 8%. At present, the majority of welding production in domestic embedded parts is pre-bent steel into H-shaped and then welded to steel plates. This practice not only consumes a large number of electrodes, but also causes welding deformation of steel plates and low productivity.