摘要
用试验比较了CW6Mo5Cr4V2(CM2)与W6Mo5Cr4V2(M2)钢的性能。试验表明,在相同淬火温度下,CM2的淬回火硬度和红硬性明显高于M2,淬火晶粒比M2粗大,冲击功比M2低。CM2在1 160~1 200℃淬火可获得优良的综合性能。在1 220℃以上淬火,CM2的过热倾向显著,冲击功急剧下降。碳和钨钼含量的变化对CM2的淬火温度影响很大。要使CM2淬火过程易于控制,收窄其主要成分范围是关键。
The performances of CW6 M o5Cr4V2( CM2) AND W6 M o5Cr4V2( M2) are compared in test. It is show ed from the test that under same quenching temperature,the quenching- tempering hardness and red hardness of CM2 are all better,quenching grain size larger,impact pow er low er than those of M2. An excellent comprehensive property can get for CM2 w ith quenching under 1 160 ~ 1 200 ℃. But it w ould have an obvious superheating trend and its impact pow er drop dow n rapidly if quenched under over 1 220 ℃. The change of contents of carbon and tungsten,molybdenum has a great influence on quenching temperature of CM2,so to narrow the main composition range of CM2 is a key to easily control its quenching process.
引文
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