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1. (WO2018036130) PROCESS METHOD FOR WELDING LOW-TEMPERATURE DUCTILE IRON AND MANGANESE STEEL PLATE

Pub. No.:    WO/2018/036130    International Application No.:    PCT/CN2017/075405
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Fri Mar 03 00:59:59 CET 2017
IPC: B23K 9/173
Applicants: CHANGZHOU HUADE MACHINERY CO., LTD
常州华德机械有限公司
Inventors: DING, Jie
丁杰
MO, Xumei
莫旭梅
ZHAO, Jinquan
赵金权
XIE, Zhen
谢震
TENG, Xuanzhong
滕轩忠
Title: PROCESS METHOD FOR WELDING LOW-TEMPERATURE DUCTILE IRON AND MANGANESE STEEL PLATE
Abstract:
A process method for welding a low-temperature ductile iron and a manganese steel plate, the method comprising: selecting a NiFe-1 welding rod, and using an MAG active gas shielded welding process to weld the low-temperature ductile iron material and the manganese steel plate together in an intermittent welding manner, wherein the low-temperature ductile iron material, the manganese steel plate and the welding rod are neither preheated before welding, nor are they subjected to a heat treatment after welding. The welding process not only results in a good fusion at the root of the weld, a good weld profile formation, no crack on the surface, no blow hole and no embrittlement and crack phenomenon to the low-temperature ductile iron material, but also causes the quality of the manganese steel plate not to be reduced; furthermore, the energy consumption is saved.