期刊
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
卷 16, 期 6, 页码 471-476出版社
MANEY PUBLISHING
DOI: 10.1179/1362171811Y.0000000025
关键词
Flash welding; Flash butt welding; Flat spot; Penetrator; Oxide inclusion
资金
- Finnish Funding Agency for Technology and Innovation
Typical flash weld defects are divided into metallurgical and mechanical defects. The metallurgical defects, which also include defects known as flat spots, penetrators and oxide inclusions, are difficult problems and develop during flashing action. The appearances and differences of flat spots, penetrators and simple oxide inclusions in flash welds are determined in this study based on literature review and experimental studies with three different steel grades. It was concluded on the basis of experimental studies that the chemical compositions of flat spots and oxide inclusions are the same, and the main difference between them is their appearance: flat spots are fracture surfaces nucleated from oxide inclusions, but simple oxide containing slags can appear also in non-fractured surfaces.
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