Self-purification from oxides of the adjacent surfaces in solid phase bonding with preheating (analytical review)

摘要

The processes of self-purification from oxides of internal walls in the pressurized volume and formation of decreased pressure, in comparison with the atmospheric pressure, in it during heating and upsetting are considered. The experimentalresults of investigations of the composition of the gas phase in the pressurized volume and the mechanism of variations in pressure inside it are systematized. The hypothesis of auto-vacuum formation of welded joints in the solid phase is suggested.