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本文研讨了保证工具最小变形和翘曲的淬火条件。所研究的材料为Р18、Р9、ХВΓ、У8、У12钢。研究证明,У8钢试样淬火时在210°(即低于M点)等温6分钟,其变形最小。在中问转变区250°等温 12分后随即空冷,试样的尺寸变得比原来小了。这与残留奥氏体量的增多有关。表1所示,系У8钢制环形试祥在各种介质中经780 °淬火后的变形及硬度的变化数,据。
This article examines the tool to ensure minimum deformation and warpage of the quenching conditions. The materials studied are Р18, Р9, ХВΓ, У8, У12 steel. Research shows that, У8 steel sample quenching at 210 ° (ie below the M point) isothermal 6 minutes, the deformation of the smallest. In asking the transition zone 250 ° isothermal 12 minutes immediately after the air-cooled, the sample size becomes smaller than the original. This is related to the increased amount of retained austenite. Table 1 shows the Department of У8 steel ring trial auspicious in a variety of media by 780 ° after quenching deformation and hardness changes in the number, according to.