COMPUTER-AID ANALYSIS FOR CRACKING OF 280 CONNECTING ROD OF 16V280ZJ DIESEL LOCOMOTIVE ON QUENCHING PROCESS
来源期刊：Acta Metallurgica Sinica2004年第1期
论文作者：J.S.Ye A.Yang Y.Luo
Key words：crack; phase transformation; non-linear; compressive stress;
Abstract: 280 connecting rod is one of the most important parts for 16V280ZJ diesel locomotive, so it needs much better mechanical performance. However, the crack is often generated at the middle section of connecting rod body on heat treatment process. A temperature-phase transformation-stress coupled 3D non-linear mathematical model has been developed to analyze the reasons of cracking. The simulation and experimental results show that the compressive stress on the cracking position is close to the fracture stress of connecting rod and the reasons of crack are mainly contributed to the carbon content excess of original material or the aging of quenchant.
J.S.Ye1，A.Yang2，Y.Luo2
(1.Hangzhou Iron & Steel Group Co. Technology Center, Hangzhou 310022, China;
2.Ziyang Internal-Combustion Plant of Sichuang, Ziyang 641000, China)
Abstract:280 connecting rod is one of the most important parts for 16V280ZJ diesel locomotive, so it needs much better mechanical performance. However, the crack is often generated at the middle section of connecting rod body on heat treatment process. A temperature-phase transformation-stress coupled 3D non-linear mathematical model has been developed to analyze the reasons of cracking. The simulation and experimental results show that the compressive stress on the cracking position is close to the fracture stress of connecting rod and the reasons of crack are mainly contributed to the carbon content excess of original material or the aging of quenchant.
Key words:crack; phase transformation; non-linear; compressive stress;
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