Application of Lanthanum Oxide and Cerium Oxide in E4303 Electrode

5th Annual International Conference on Material Engineering and Application

工业技术（总论）;材料科学

Li, Enhuai^1 ; Wang, Nengwei^1 ; Wan, Shuquan^1

College of Vanadium and Titanium, Panzhihua University, Panzhihua, Sichuan Province

617000, China^1

关键词: Deposition efficiencies;    Double sides;    Existing problems;    Q235 steel;    Rare earth oxide;    Rod efficiency;    Total content;    Weld deposits;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/484/1/012031/pdf
DOI  :  10.1088/1757-899X/484/1/012031

来源: IOP

【 摘 要 】

In view of the existing problems of E4303 electrode in the process of use, the welding rod formula was optimized in this test. The total content of rare earth oxide was added to the coating of E4303 electrode, and the experiment was conducted according to the following proportions: 0% lanthanum oxide +10% cerium oxide, 2% lanthanum oxide +8% cerium oxide, 4% lanthanum oxide+6% cerium oxide, 6% lanthanum oxide+4% cerium oxide, 8% lanthanum oxide +2% cerium oxide and 10% lanthanum oxide +0% cerium oxide. The welding rod was made by hand according to the formula, and then the welding rod was used to perform double-side flat welding on the Q235 steel plate to test the properties of weld deposit metal. According to the experiment, when the optimal amount of lanthanum oxide and cerium oxide was 6%, the optimal amount of cerium oxide was 4%. At this point, the porosity of weld deposit metal is good, forming effect is good, splash rate is 3.89%, deposition efficiency is 74.62%, welding rod efficiency is 53.13%, melting coefficient is 0.124, hardness is 136.60HV, and tensile strength is 492.25Mpa.