辽宁工程技术大学学报（自然科学版）2011，Vol.30Issue(3)：472-475,4.DOI:CNKI：21-1379/N.20110603.0016.003
常压高速气雾喷射淬火表面换热系数
Surface heat transfer coefficient of nitrogen-spray water eject quenching under normal pressure and high velocity
摘要
Abstract
The surface heat transfer coefficient is difficult to measure during quenching process. According to the cooling curve of surface and centre of specimen measured experimentally, the variations of surface heat transfer coefficient and specimen temperature were calculated by nonlinear estimate methods and finite difference method based on inverse heat transfer method. The results show that the cooling performance of mixture of Nitrogen and spray water is the same as that of water or oil. During quenching, the surface heat transfer coefficient is calm at early stage. Around Ms point (170℃), the surface heat transfer coefficient increases distinctly. During Martensite phase transformation, the latent heat is used to increase the drive force of phase transformation and to overcome resistance of phase transformation, thus the Martensite phase transformation can be fulfilled.关键词
氮气-雾化水混合物；气体淬火；表面换热系数：数值计算；马氏体相变Key words
nitrogen-spray water mixture/ gas quenching/ surface heat transfer coefficient/ numerical calculation/ Martensite phase transformation分类
矿业与冶金引用本文复制引用
丁冬芳,邵宝东,程赫明,李建云,李自良,侯立军,侯杰,王丽凤,田翀..常压高速气雾喷射淬火表面换热系数[J].辽宁工程技术大学学报（自然科学版）,2011,30(3):472-475,4.基金项目
云南省应用基础研究重点基金资助项目(2007A0015Z)；云南省教育厅科学研究基金资助项目(2010Y382) （2007A0015Z）
