Influence and Analysis of Concentrate Degree of Plasma Arc for Heat Process of Hardening Treatment

作     者：WANGShuo-gui YANHong-ri WANG Shuo-gui, VAN Hong-ri Department of Precision Machinery and Precision Instrument, University of Science and Technology of China, Hefei, China

作者机构：wDepartmentofPrecisionMachineryandPrecisionInstrumentUniversityofScienceandTechnologyofChinaHefeiChina 

出 版 物：《材料热处理学报》 (Transactions of Materials and Heat Treatment)

年 卷 期：2004年第25卷第5B期

页      面：779-782页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0704[理学-天文学] 0702[理学-物理学] 080201[工学-机械制造及其自动化] 

主　　题：等离子电弧热源 表面淬火 硬化处理 集中度 

摘      要：According to the practicable model of the plasma arc surface quench, the influence law of the heat process, cooling course, temperature field about surface quench treatment by plasma arc due to the concentrate degree of plasma arc heat source are discussed in this paper. It shows that the concentrate degree of plasma arc heat source can change the width of the hardening zone and can not change the maximum harden depth. With the increase of the concentrate degree, the area of the heat influence zone is decreased and its shape is narrowed after the heat source. Relative to cooling rate, the influence of the heat source concentrate degree for heat absorption is bigger. The correctness of the practical model are proved with experimental results for quench hardening of steel by plasma arc.