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Salt protection flux-free brazing method and brazing device

A brazing method and flux-free technology, applied in electric heating devices, auxiliary devices, welding equipment, etc., to achieve the effects of easy cleaning, good protection, and low cost

Active Publication Date: 2021-08-27
CHINA INNOVATION ACADEMY OF INTELLIGENT EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this application is to provide a salt-protected flux-free brazing method and brazing device, which solves the urgent need in the prior art to a certain extent Technical problem of a green and pollution-free flux-free brazing method with low cost and low requirements on welding environment

Method used

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  • Salt protection flux-free brazing method and brazing device
  • Salt protection flux-free brazing method and brazing device
  • Salt protection flux-free brazing method and brazing device

Examples

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Embodiment 1

[0035] see figure 1 As shown, the embodiments of the present application provide a kind of salt-protected flux-free brazing method, comprising the steps of:

[0036] Step 100, assembling the brazing joint to be welded, and then wrapping the brazing joint to be welded with salt 5;

[0037] Note: the assembled brazing joint to be welded has a structure in which a solder 4 is sandwiched between the first piece to be welded 2 and the second piece to be welded 3 .

[0038] Step 200, heating the to-be-welded brazing joint wrapped with the salt 5 to complete the welding.

[0039] During the brazing process, part of the salt 5 close to the welding material melts, effectively isolating the air and reducing the oxidation of the brazed joint, and after the welding is completed, the salt 5 solidifies during the cooling process, which can also protect the brazed joint role.

[0040] After the above analysis, it can be known that among various salt-protected flux-free brazing methods, th...

Embodiment 2

[0053] Embodiments of the present application also provide a brazing device, which is applied to the salt-protected flux-free brazing method described in any of the above embodiments, and thus has all the beneficial technical effects of the method.

[0054] In this embodiment, preferably, as figure 2 with image 3 As shown, the brazing device includes a carrying member 1 and a welding heating mechanism. The interior of the carrying member 1 is hollow and its two ends are formed with openings. The inside of the carrying member 1 is used to carry the brazing joint to be welded wrapped with salt 5, It should be noted here that the entire end portion may be completely opened, or part of the entire end portion may be formed with openings, that is, there is a partially shielded structure, which can be selected according to actual needs.

[0055] The welding heating mechanism is used to heat the brazing joint to be welded wrapped with salt 5 placed in its bearing member 1, wherein,...

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Abstract

The invention relates to the technical field of brazing, in particular to a salt protection flux-free brazing method and a brazing device. The salt protection flux-free brazing method comprises the following steps that a to-be-welded brazing joint is assembled, and then the to-be-welded brazing joint is wrapped with salt; and the to-be-welded brazing joint wrapped with the salt is heated, and welding is completed. According to the salt protection flux-free brazing method, salt protection brazing is adopted, the brazing joint can be well protected, the requirement for the environment is low, in addition, the salt belongs to a green and pollution-free substance, the salt can be repeatedly used after welding is completed, the cost is low, and the joint obtained after welding is easy to clean.

Description

technical field [0001] The present application relates to the technical field of brazing, in particular to a salt-protected flux-free brazing method and a brazing device. Background technique [0002] At present, for the welding of high-quality products and easily oxidized materials, the method of brazing in a vacuum environment, reducing gas or inert gas environment is used, which is more dependent on equipment or the environment. The specific brazing requirements of the three states are as follows: Brazing in a vacuum environment requires a certain degree of vacuum, so the equipment is required to have better sealing performance; brazing in a reducing gas or inert gas environment requires the use of reducing gases or inert gases, and the gases are generally not recycled after use. The cost of the above three methods is relatively high. Therefore, a green and pollution-free flux-free brazing method with low cost and low requirements on the welding environment is urgently ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/00B23K1/002B23K3/04B23K3/08
CPCB23K1/002B23K1/0002B23K1/0004B23K3/04B23K3/08
Inventor 龙伟民吴奇隆纠永涛王博程战王冰李宇佳孙志鹏
Owner CHINA INNOVATION ACADEMY OF INTELLIGENT EQUIP CO LTD
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