Thin plate air pressure diffusion connection method

Abstract

The invention provides an efficient thin plate air pressure diffusion bonding method, and belongs to the field of diffusion welding. The problem of waste of process plates in diffusion welding can be solved. The method comprises the following steps that S1, a plurality of thin plates are sequentially stacked from bottom to top to form a set of parts, the parts are divided into two sets, and an air exhaust channel is formed between every two vertically-adjacent thin plates; s2, the two sets of parts in the step S1 are placed in a mirror image stacking mode, the same air exhaust channel in the two sets of parts is located at different positions, a layer of process base plate frame is arranged between the two sets of parts, and a ventilation flow channel is reserved in the process base plate frame; s3, the air exhaust channel and the ventilation flow channel are connected with air pipes correspondingly to form an integral to-be-welded part, the integral to-be-welded part is subjected to seal welding, sealed cavities are formed among the thin plates after seal welding, and each air pipe communicates with the corresponding sealed cavity; and S4, the whole to-be-welded part subjected to seal welding in the step S3 is put into a diffusion welding mold to be subjected to diffusion welding.

Description

technical field [0001] The invention belongs to the field of diffusion welding, in particular to a thin plate air pressure diffusion connection method. Background technique [0002] Diffusion connection technology is to use materials to diffuse between atoms under certain conditions to achieve the purpose of connection. It can realize the connection of metals and even metals and non-metals. It is an efficient and reliable surface-to-surface connection technology; [0003] Diffusion connection between metals generally applies uniform and stable pressure continuously under high temperature conditions. Diffusion pressure is generally mechanical pressure or gas pressure. The uniformity of mechanical pressure is guaranteed by the accuracy of equipment and tooling. Most commonly used in diffusion joins. Due to its good uniformity, gas pressure is often applied to the diffusion connection of large size, special shape and few layers. For some materials with good plasticity and clos...

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Problems solved by technology

[0006] In view of this, the present invention aims to propose a thin plate air pressure diffusion connection method, which can solve the problem of waste of process plates in diffusion welding, improve the quality of diffusion connection, and improve the welding rate of finished parts

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