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前言随着工业技术的迅速发展,为了降低产品制造成本,提高生产效率和材料利用率,国内外广泛地推广应用各种无切削少切削工艺,如精密冲压、精密锻造、压铸、冷挤压、热挤压、利用金属超塑性的恒温锻造等新工艺,用模压成型代替传统的切削加工工艺。
Preface With the rapid development of industrial technology, in order to reduce product manufacturing costs, improve production efficiency and material utilization, extensive domestic and international promotion of a variety of non-cutting cutting technology, such as precision stamping, precision forging, die-casting, cold extrusion, Hot extrusion, the use of metal superplastic forging and other new processes, with molding instead of the traditional cutting process.