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1、连杆模原来的制造情况 1978年以前,连杆模具制造精度及热处理硬度质量是不稳定的,严重影响着前方锻件生产和锻件的质量。质量抽查情况(见表1)。
1, the original production of connecting rod mold Before 1978, connecting rod mold manufacturing precision and heat treatment of the hardness of the quality is not stable, a serious impact on the front forgings production and forging quality. Quality checks (see Table 1).