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xiao she bei tai mo duan zao da xing chi lun
Pages: 74-76
Year: Issue:  5
Journal: Ordnance Material Science and Engineering

Keyword:  胎模锻造大型齿轮锻件尺寸锻造比自由锻造锻成船用离合器开坯滚锻胎模成型;
Abstract: <正> 我厂生产的船用离合器减速齿轮,均采用18CrNiWA钢制成。原用自由锻造法在三千吨水压机上用2.5吨锭直接开坯锻成,其锻造毛坯如图1所示。这种工艺不仅锻造比小,锻件中心锻压不透,存在残余的树枝晶等铸态组织;而且锻件余量大,材料利用率低,浪费了大量的贵重材料和机械加工工时,增加了产品成本。
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