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What are the classification of diffusion welding

Back to list Source: Junye Browse: Date of issue:2021-01-19 14:53【B M S
(1) Diffusion welding without intermediate layer. Metal diffusion welding is completed by atomic diffusion on the contact surface of the metal to be welded. It is mainly used for the welding of the same kind of materials, and it can also be used for the welding of dissimilar materials that do not produce brittle intermediate metals.
 
(2) Diffusion welding with intermediate layer. The diffusion welding of metal is completed by the diffusion of intermediate metal, which can be used for the welding of the same or different metal. The purpose of adding intermediate layer to dissimilar metal is to prevent the formation of brittle intermediate metal or reduce the difference of linear expansion coefficient between two metals; the purpose of adding intermediate layer to the same metal is to form solid solution with required properties at the joint.
 
The intermediate layer may be powdery or flaky. Vacuum spraying or electroplating is applied to the welding surface.
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