Research and development status of high heat input welding materials
SONG Feng- yu1,ZHANG Peng- yan2, WANG Ping1,ZHU Fu- xian2
1.The Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, Liaoning, China 2. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, Liaoning, China
Abstract：The influences of high heat input welding on the microstructure and mechanical property of weld metal were elucidated in this paper. The different toughening mechanisms for welding materials at steel grades above 590MPa and 780MPa were introduced, respectively. The development examples of welding material for ultra- high heat input electroslag welding in Japan were listed. The research results showed that acicular ferrite with vE0 up to 123J could be obtained by changing the alkalinity of welding flux to adjust the number of oxide inclusions. Meanwhile, the welding heat input was in range of 850-1000kJ/cm. Furthermore, the current problems and development trend for the research of high heat input welding materials in China were also pointed out.
宋峰雨，张朋彦，王平，朱伏先. 大热输入焊接材料的研究开发现状[J]. 中国冶金, 2015, 25(12): 7-11.
SONG Feng- yu,ZHANG Peng- yan, WANG Ping,ZHU Fu- xian. Research and development status of high heat input welding materials. China Metallurgy, 2015, 25(12): 7-11.
2015, Vol. 25 
