【中文版：】為知足石油煉扮（bàn）裝置（zhì）對石油裂化不鏽鋼管的機能要求,開辟（pì）了 不鏽管。以正火（huǒ）和回火溫度、正火和回火保溫（wēn）時候為參數,采用優化試驗（yàn）方式,獲得 不鏽管優化的熱處置工藝為（wéi）:正火溫度920～960℃、正火保溫時候60min;回火溫度（dù）720～780℃、回火保溫時候60min。按上（shàng）述優化工藝獲得 不（bú）鏽管的佳力學機能為:抗拉極限615MPa、屈就強度505MPa、伸長率23%、衝擊功280J、硬度≤180HB;組織晶粒度為8.5級,各項機能均知足尺度和用（yòng）戶的利用（yòng）要求。

【Enlish version】To meet the petroleum refinin equipment to petroleum crackin seamless steel tube, the performance requirements of the development Cr5Mo alloy tube 1. oin to fire and temperin temperature, is fire and temperin holdin time for parameters, adoptin the optimization experiment method, et the alloy steel tube heat treatment process of optimization for: is the fire of 920 ~ 960 ℃, the temperature is fire holdin time 60 min; Temperin temperature of 720 ~ 780 ℃, holdin time temperin 60 min. Accordin to the above optimization of process et 1 Cr5Mo alloy pipe of the best mechanical properties for: tensile limit of 615 MPa, yield strenth 505 MPa, elonation rate 23%, impact enery 280 J, hardness HB; more than 180 Oranization for 8.5 manitude of rain, and various performance will meet the standards and the use of user requirements.

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