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本文介绍了运用毛主席的光辉哲学思想，对Ｗ１８Ｃｒ４Ｖ钢螺母冲子孔模实施 低温淬火及回火工艺试验的情况。试验已初步收到较好的效果，模具使用寿命 提高了七至十倍。
This article describes the use of Chairman Mao’s glorious philosophy, W18Cr4V steel nut punch hole mode of implementation of low-temperature quenching and tempering process test situation. The test has initially received good results, mold life increased by seven to ten times.