Characteristics of changes occurring on the surface of thin-walled elements as a result of spot welding

Przegląd Spawalnictwa

Maciej Bogumił Lachowicz¹  Marzena Małgorzata Lachowicz² 

[1] Machinefish Materials & Technologies;Wrocław University of Science and Technology;

关键词: surfacing;    regeneration of machine parts;    welding distortions;    chromium coating;    metallography;   

DOI  :  10.26628/wtr.v91i8.1034

来源: DOAJ

【 摘 要 】

The paper presents the results of metallographic examination of a sleeve from a refrigeration system used in the food industry. On its outer surface, local surface changes were observed. Metallographic and microscopic SEM examinations were performed.It was found that the direct cause of their formation was the use ofspot welding to regenerate its inner surface. It led to plastic deformation of the external surface as well as the formation of a layer of oxides with wustite properties.

【 授权许可】

Unknown