Cold working dies of superior machinability for general use; for large product quenching or wire electronic discharge machining.

切削性优异的通用冷作模具钢。注意大型加工品的淬火及钢丝电火花加工。

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JABF owns production and manufacturing capacity on large-scale, including processes of metal machining, cold stamping, plastic forming, spring coiling, surface treatment and final assembly etc.

企业具备大规模批量生产加工能力，主要有机械加工、冷挤冲压、塑料成型、弹簧加工、表面处理、总成装配、检测试验等工艺方式。

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The causes of crack for cold-working die are analyzed by checking machining technique and observing the microscopic structure, the technical measures to prevent cracks are put forwarded in the paper.

通过对弯曲件冷冲模各加工工艺和金相显微组织的分析，分析了冷冲模产生裂纹的原因，并提出了防止裂纹产生的工艺措施。

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