国内外许多工厂都采用镶块锻模、电渣堆焊锻模等方法来节约锻模钢。但这两种方法都有些缺点:前者镶块的紧固、装拆、更换、翻新都很麻烦;后者经常出现疏松、夹渣、气孔、裂纹等缺陷,且设备较复杂,耗电量也很大,因此都未能在生产中广泛地采用。铸体夹 Many factories at home and abroad are using inserts forging die, die-welding and other methods to save die forgings. However, both of these methods have some disadvantages: the former is very troublesome to fasten, assemble and disassemble, change and renovate; the latter often has defects such as looseness, slag inclusion, pores, cracks and the like, and the equipment is complicated and the power consumption is also high Therefore, they are not widely used in production. Casting folder