Gas dynamic control of properties of welded joints from high strength alloyed steels

作     者：D. A. Chinakhov 

作者机构：Yurga Institute of Technology Tomsk Polytechnic University 652055 Russia Kemerovo region 

出 版 物：《China Welding》 (中国焊接（英文版）)

年 卷 期：2014年第23卷第3期

页      面：26-30页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 082503[工学-航空宇航制造工程] 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] 0825[工学-航空宇航科学与技术] 080201[工学-机械制造及其自动化] 

基　　金：the work has been performed with financial support of the russian foundation for basic research.no.13-08-98002 

主　　题：welding gas dynamic control shielding gas properties welded joint alloyed steel 

摘      要：Gas dynamic control in welding with consumable electrode in conditions of two-jet gas shielding and its impact on the processes in the welding area and properties of the welded joints from high strength alloyed steel 30HGSA is considered in the paper. The results of a comparative experimental study of controlling the properties of welded joints by changing the gas dynamics of the active shielding gas are given. The impact force of a shielding gas jet on the drop of the electrode metal is 12 times higher in conditions of two-jet gas shielding than in those of single jet shielding. It is found that gas dynamics of the active shielding gas jet determines the formation of the welded joints, their chemical properties and the properties of the welded joints from high strength alloyed steels. The consumable electrode welding method with two-jet gas shielding provides controlled dynamics in the welding area and allows controlling the transfer of the electrode metal, chemical composition of the weld, stabilizing the welding process, it ensures higher mechanical properties of the welded joints.