? d-直徑题姜、對(duì)邊距離或厚度
? 正火+車削或研磨-Normalized + turned or ground
? 熱軋+冷拔或熱軋+冷拔+研磨-Hot rolled + cold drawn or hot rolled + cold drawn + ground
? 淬火回火+車削或研磨-Hardened and tempered + turned or ground
? 淬火回火+冷拔或淬火回火+冷拔+研磨-Hardened and tempered + cold drawn or Hardened and tempered + cold drawn + ground
? 車削拿穴,研磨或冷拔及軟化-Turned, ground or cold drawn and finally softened
? 標(biāo)記中牌號(hào)尾綴字母P瘾手、Q监氢、R拄渣、S棕凉、T坷磷、U度攘、V、W竹坝、X嘱杆、Y、Z分別對(duì)應(yīng)淬火回火材料不同的抗拉強(qiáng)度范圍鹰个。
? 正火溫度810~840°C寂疏;淬火溫度810~840°C,淬火介質(zhì)油骏拱,回火溫度550~660°C忱徙。
② 對(duì)棒材進(jìn)行整體熱處理不一定能獲得這些性能,但買方可通過(guò)對(duì)零件進(jìn)行適當(dāng)?shù)臒崽幚韥?lái)獲得這些性能难圣。