【摘要】：研究了一種對(duì)1Cr11Mo Ni W1VNb N鋼進(jìn)行氣體滲氮的工藝方法,采用較高溫度在奧氏體區(qū)滲氮,通過多次試驗(yàn)摸索出一種較好的工藝方法,并用顯微鏡、硬度計(jì)等對(duì)滲氮后試樣的滲層深度、裂紋情況、表面硬度、階梯硬度等進(jìn)行了測(cè)試分析。結(jié)果表明:采用溫度(625±5)℃滲氮、(640±5)℃退氮的三段滲氮方法,可以滿足1Cr11Mo Ni W1VNb N鋼滲層深度≥0.25 mm、表面維氏硬度739~840 HV的技術(shù)要求。
[Abstract]:A method for nitriding 1Cr11Mo Ni W 1VNB N steel by gas nitriding was studied. A better method was found out by several experiments in austenite region at higher temperature. The depth of nitriding layer, crack, surface hardness and step hardness of nitrided samples were measured and analyzed by hardness meter. The results show that the method of nitriding at (625 鹵5) 鈩，

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