论文部分内容阅读
俄罗斯辛那尔钢管厂生产的碳素钢管和低合金钢管，其热处理方法获得专利权。该方法是将钢管，在从最后一架机架中轧出时用水冷却，此时钢管外表面上的温度开始从８００～８４０℃冷却，在３～５ｓ的时间内以每秒平均下降３０～４０℃的速度冷却６～１０个周期。每一周期的急速
The carbon steel and low-alloy steel pipes produced at the Sinnor Steel Plant in Russia are patented for heat treatment. The method is that the steel pipe is cooled by water while rolling out from the last rack, the temperature on the outer surface of the steel pipe begins to cool from 800 DEG C to 840 DEG C, and the average decrease of 30 DEG ~ 40 ℃ cooling rate of 6 to 10 cycles. Haste each cycle