percentage reduction of area 断面收缩率 ; 面积收缩率
reduction of area at fracture 断裂时断面收缩率
By forging,primary normalizing and high temperature tempering,the reduction of area of a 45 steel magnetic yoke for electric machine was lower. Metallography observation indicates that slight banded structure exists in the steel magnetic yoke body.
某45钢电机磁轭锻造+一次正火+高温回火后断面收缩率偏低,金相观察发现在磁轭本体有轻微带状组织,返修件经二次正火+高温回火,消除了带状组织,断面收缩率达到了技术要求。
参考来源 - 45钢电机磁轭带状组织的消除与预防·2,447,543篇论文数据,部分数据来源于NoteExpress
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