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Method for controlling the size of primary austenite grains, formed in steel in result of heat treatment or thermochemical treatment in vacuum
Method for controlling the size of primary austenite grains, formed in steel in result of heat treatment or thermochemical treatment in vacuum
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机译：控制在真空中进行热处理或热化学处理后在钢中形成的一次奥氏体晶粒尺寸的方法
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摘要
control of grain size austenitu original, resulting in steel by heat treatment or chemical cieplno - in a vacuum, is that heat treatment in vacuum or cieplno - chemical retail steel, which is marked by the particle size austenitu pierwotn ego, emerging as a result of this treatment, leads in the presence of a control sample of steelwhich is made being able to detail, technological identical as in the treated detail. the treatment is at a pressure of 10 pa - 100 kpa at a temperature where the heat treatment or cieplno - chemical, introducing in the final phase of treatment to the obru00f3bczej furnace vacuum hydrogen or hydrogen compound.after the treatment is introduced into chamber furnace vacuum nitrogen, after which the control sample, after washing with acetone and drying, is measured grain size austenitu by testing metalograficznych by optical microscope.
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