Open AccessApplication of electric arc surfacing in manufacture of three-dimensional steel objects
Author(s) -
С. С. Жаткин,
К. В. Никитин,
В. Б. Деев,
С. С. Панкратов,
Д. А. Дунаев
Publication year - 2020
Publication title -
izvestiâ vysših učebnyh zavedenij. černaâ metallurgiâ
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.3
H-Index - 7
eISSN - 2410-2091
pISSN - 0368-0797
DOI - 10.17073/0368-0797-2020-6-443-450
Subject(s) - materials science , cube (algebra) , welding , shrinkage , substrate (aquarium) , ultimate tensile strength , voltage , composite material , tool steel , mode (computer interface) , arc (geometry) , electric arc , metallurgy , structural engineering , geometry , mechanical engineering , electrode , electrical engineering , engineering , mathematics , geology , computer science , physics , oceanography , quantum mechanics , operating system
The article presents theresults of research on the influence of modes of the volume electric arc surfacing on the geometric accuracy of objects of the “cube” type made of 09G2S and 06Kh19N9T steel fillers. It was found, that when surfacing thesamples made of 09G2S steel, the actual dimensions in length and width, generally exceed, and in height are smallerthan the specified dimensions of the model. Itmay be due to melt spreading on the substrate during formation of the first layers. The optimal surfacing mode for objects of the “cube” type made of 09G2S steel was defined. When surfacing the samples of 06Kh19N9T steel, spreading does not occur, but all the actual dimensions are smaller in relation to the specified. Itmight bedue to the influence of shrinkage processes occurring in the surfaced layers during their solidification. The most optimal mode for the samples made of 06Kh19N9T steel is the mode in which the size reduction in length and width was no more than 2.5 %, and in height – 13.5 %. Studies on the influence of welding arc voltage and the grade of filler material on width of the surfaced track confirmed the tendency of 09G2S steel to spread over the substrate in the entire studied voltage range (11 – 19 V). The structure of the surfacedsamples was investigated. Mechanical tests on the tensile strength of the surfaced samples at room temperature have shown that they have an acceptable set of mechanical properties that exceed the reference values.