Examining of Solid and Liquid Industrial Copper Blanks with Purpose for Quality Control in Respect of Defects of Technological Origin

Abstract:

Microstructure of ingot and industrial blanks made of copper M2 was examined for quality control. Microstructure was examined by means of traditional metallographic analysis methods. Exogenous nonmetal inclusions and pores in microstructure were found. The transition from exogenous inclusions and pores, which were not removed in initial processing stage, to the crack, which leads to billet destruction on one of last processing stages, is shown. Without quality control of copper blanks by a metallographic method, it is impossible to provide guarantee of reliable operation of machines and responsible purpose constructions. A comparative study of the temperature dependences of the viscosity of the melts of charge materials and finished ingots for copper M2 was carried out. The study of the viscosity of copper melts M2 was carried out with the aim of quality control in the chain of "charge-melt-ingot" at the foundry stage.

• Periodical: Materials Science Forum (Volume 989)
• Pages: 41-46
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.989.41
• Online since: May 2020
• Authors: G.A. Tkachuk*, V.A. Maltsev, O.A. Chikova
• Keywords: Blanks, Copper M2, Defect, Melt, Microstructure, Quality Control, Viscosity

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