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The welding of important components, the welding of alloy steel and the welding of thick parts all require preheating before welding. The main functio...
Preheating method In the workshop or in the field, flame heating (air fuel or acetylene fuel), resistance heating, electronic induction heating and ot...
Practical skills should also be paid attention to to avoid material softening problems caused by preheating. Choose those welding processes and electr...
1.The reason for saying "entanglement" is because: the importance of the organization of the parts is self-evident, because the organization determine...
At present, there is a big gap between the accuracy of material composition, the standardization of organization, the precision of processing, the aut...
Regarding heat treatment as a "special process" and adopting "whole process quality control and management" to control and manage the most stringently...
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