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序言几年前,我们讲过一种在吸气管中用分步锻造法(Step forging)制造工具钢粉末锻件的方法。脱氧剂(例如,涂于容器内表面的钛粉)可除去封闭在容器内的空气,而颗粒表面的氧化物则可由混入的碳粉或合金化粉末中的碳相反应而被还原。用这个方法可以将含氧量达0.4%的粉末充分还原到具有令人满意的性能。分步锻造法用测量压力的方法和用色谱分离的方法来分析小试样加热到锻造温度时所抽取的气体成分以研究装满
A few years ago, we talked about a method for making tool steel powder forgings by step forging in the suction tube. The deoxidizing agent (for example, titanium powder coated on the inner surface of the container) can remove the air enclosed in the container and the oxide on the surface of the particles can be reduced by the carbon phase in the mixed carbon powder or alloyed powder. With this method, it is possible to sufficiently reduce the powder having the oxygen content of 0.4% to have satisfactory properties. The stepwise forging method was used to measure the pressure and the method of chromatographic separation was used to analyze the sample gas heated to forging temperature of the extracted gas composition to study full