Influence and Analysis of Concentrate Degree of Plasma Arc for Heat Process of Hardening Treatment
来源期刊：材料热处理学报2004年第5期
论文作者：YAN Hong-ri WANG Shuo-gui
关键词：plasma arc heat source; concentrate degree; surface quench; phase transformation hardened zone;
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 45# steel by plasma arc.
YAN Hong-ri1，WANG Shuo-gui1
(1.Department of Precision Machinery and Precision Instrument, University of Science and Technology of China, Hefei, China)
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 45# steel by plasma arc.
关键词:plasma arc heat source; concentrate degree; surface quench; phase transformation hardened zone;
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