CAJ | 학술논문

介绍了深冷处理技术的国内外应用现状，以及深冷处理对钢铁、有色金属以及硬质合金等材料的作用机理，并以9Cr18不锈钢和高强铝合金7A04为例进行了深冷处理的工艺试验，分析了深冷处理对降低钢中的残余奥氏体以及对铝合金尺寸稳定性的影响。试验结果表明：深冷处理可以有效降低9Cr18不锈钢调质热处理后的残余奥氏体含量，并且对其硬度的影响不明显；而对于7A04铝合金，深冷处理能够有效减小构件的加工变形，稳定产品尺寸，提高加工合格率，是一种可工程化应用的先进工艺。
개소료심랭처리기술적국내외응용현상，이급심랭처리대강철、유색금속이급경질합금등재료적작용궤리，병이9Cr18불수강화고강려합금7A04위례진행료심랭처리적공예시험，분석료심랭처리대강저강중적잔여오씨체이급대려합금척촌은정성적영향。시험결과표명：심랭처리가이유효강저9Cr18불수강조질열처리후적잔여오씨체함량，병차대기경도적영향불명현；이대우7A04려합금，심랭처리능구유효감소구건적가공변형，은정산품척촌，제고가공합격솔，시일충가공정화응용적선진공예。
The cryogenic treatment has already been generally used in foreign countries. This paper introduces the research status of cryogenic treatment in inland and overseas,and the effect mechanics to the steel,nonferrous metal,and hard alloy. Aiming at the stainless steel 9Cr18 and high-strength Aluminum alloy 7A04,we carried on the cryogenic treatment tests,and the effects of the cryogenic treatment on the residual austenite in the steel and residual stress in the aluminum alloy were ana-lyzed. The tests indicate that the cryogenic treatment could effectively reduce the residual austenite in stainless steel 9Cr18,and has unobvious effects on its hardness. To the Aluminum alloy 7A04,the cryogenic treatment could reduce the deformation during cutting,to stabilize the size of the products. So,it was an advanced technique which can have widespread availability.