ENGINEERING JOURNAL CHIANG MAI UNIVERSITY

Volume 26, No. 01, Month APRIL, Year 2019, Pages 148 - 157

The effect of chromium addition in weld metal by submerged arc welding process

Buntoeng Srikarun and Prapas Muangjunburee

Abstract Download PDF

Hardfacing with chromium addition has been a new technique and widely employed to extend the service life of machine parts related to wear mechanisms. In this work, the effect of chromium from high chromium martensitic stainless steel type 401 in hardfacing deposit was studied. Low carbon steel electrode and martensitic steel electrode were used to deposit using submerged arc welding process. The results revealed that the microstructure of low carbon steel deposit without chromium addition consists of ferrite and pearlite. The microstructure of weld metal with chromium addition showed ferrite and martensite. It can be seen that the increasing amount of additional chromium showed lower welding dilution and higher hardness values of the weld layer. The microstructure and hardness values of welding layer welded with chromium addition are different to those of welding layer welded with martensitic steel type electrode without addition

Keywords

Submerged Arc Welding, Hardfacing, Chromium Addition, Welding Dilution

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