第一节冷挤压工艺流程用冷挤压的办法生产零件,一般包括三个部分,即毛坯制备——冷挤压——后续加工。毛坯制备对于有色金属冷挤和黑色金属冷挤略有不同,有色金属冷挤一般有如下程序:下料——(校正)——退火——涂润滑剂。对于黑色金属冷挤,其程序:下料——(校正)——退火——磷化处理(或草酸盐处理)——涂润滑剂,有的采用肥皂水作为润滑剂,在磷化处理之后立即进行,与磷化处理合为一个工序。若需要多次挤压,则根据实际情况在两次挤压之间增加退火(软化处理)和润滑处理 The first section of the cold extrusion process Cold extrusion method to produce parts, generally consists of three parts, namely blank preparation - cold extrusion - the subsequent processing. Blank preparation for non-ferrous metal cold extrusion and black metal cold extrusion slightly different, non-ferrous metal cold extrusion generally have the following procedures: Cutting - (correction) - annealing - coated lubricant. For cold extrusion of ferrous metals, the procedure is: Blanking - (Correction) - Annealing - Phosphating (or Oxalate) - Lubricating, and some with soapy water as a lubricant, Phosphating Immediately after, together with the phosphate treatment for a process. If you need to squeeze more, according to the actual situation in the extrusion between the two increases annealing (softening) and lubrication