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东风牌汽车同步器锥盘(图1),我厂采用20~#或A3钢板冲制。热处理技术要求;表面氰化0.3～0.7mm,淬火后硬度为HRC58～63,变形量≤0.15mm。
Dongfeng brand car synchronizer cone (Figure 1), I plant using 20 ~ # or A3 steel stamping. Heat treatment technology requirements; surface cyanide 0.3 ~ 0.7mm, hardness after quenching HRC58 ~ 63, deformation ≤ 0.15mm.