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我厂生产的轻型汽车飞轮齿圈(45钢,毛坯如图1),长期以来一直是锻后空冷再加热调质。现改为锻造余热对其进行调质,取得了较好的经济技术效果。
The light automobile flywheel ring gear (45 steel and blank as shown in Fig. 1) produced by our factory has long been air-cooled and then heat-conditioned for forging. It was changed to forging waste heat to its quality, and achieved good economic and technological results.