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Soldering flux

A technology of welding aids and corrosion inhibitors, which is applied in the direction of welding media, welding equipment, welding/cutting media/materials, etc., can solve problems such as single function, and achieve good cleaning effect, low surface tension of additives, wetting and good diffusion effect

Active Publication Date: 2012-08-15
常熟紫金知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the technical problem of the single function of the existing welding aids, and to provide a welding aid that can reduce surface tension, remove surface oxides, protect welded joints, prevent re-oxidation, and have strong adaptability and can be suitable for different welding materials. welding flux

Method used

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  • Soldering flux
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Proportion:

[0026] Rosin Organic Acid Activator 5%,

[0027] Rosin modified corrosion inhibitor 17%,

[0028] Rosin modified surfactant 5%,

[0029] Rosin modified heat-resistant and corrosion-inhibiting paste 40%,

[0030] Salicylic Acid 4%,

[0031] Ethylene glycol butyl ether acetate 25%,

[0032] BYK410 thixotropic agent 4%.

[0033] 2. Preparation method of welding flux:

[0034] The above-mentioned substances are heated and melted in a reaction kettle, dissolved and stirred evenly, and then packaged.

Embodiment 2

[0036] 1. Proportion:

[0037] Rosin Organic Acid Activator 7%,

[0038] Rosin modified corrosion inhibitor 18%,

[0039] Rosin modified surfactant 3%,

[0040] Rosin modified heat-resistant and corrosion-inhibiting paste 40%,

[0041] Salicylic Acid 5%,

[0042] Ethylene glycol butyl ether acetate 25%,

[0043] BYK410 thixotropic agent 2%.

[0044] 2. Preparation method of welding flux:

[0045] The preparation method is the same as in Example 1.

Embodiment 3

[0047] 1. Proportion:

[0048] Rosin Organic Acid Activator 10%,

[0049] Rosin modified corrosion inhibitor 14%,

[0050] Rosin modified surfactant 4%,

[0051] Rosin modified heat-resistant and corrosion-inhibiting paste 38%,

[0052] Salicylic Acid 7%,

[0053] Ethylene glycol butyl ether acetate 24%,

[0054] BYK410 thixotropic agent 3%.

[0055] 2. Preparation method of welding flux:

[0056] The preparation method is the same as in Example 1.

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Abstract

The invention discloses a soldering flux, which consists of the following components in percentage by mass: 5 to 15 percent of rosin organic acid activator, 10 to 20 percent of rosin modified inhibitor, 0.5 to 5 percent of rosin modified surfactant, 25 to 40 percent of rosin modified temperature-resistant corrosion inhibition pasting agent, 4 to 8 percent of salicylic acid, 15 to 25 percent of ethylene glycol butyl ether acetate and 1 to 5 percent of BYK410 thixotropic agent. The soldering flux has the advantages of high adaptability and protection function on welding materials with differentcomponents, and also has the characteristics of good effect of cleaning surface oxides and good effect of moistening and diffusing.

Description

technical field [0001] The invention belongs to the technical field of solder and relates to a welding aid. Background technique [0002] The welding of electronic industrial products mostly adopts soldering tin welding process. The tin brazing industry is a fairly traditional welding method. In the tin welding process, rosin-type welding aids and rosin-based solders are indispensable additives. , which plays a key role in the welding process. In the past, different types of welding aids must be used for electronic components of different quality. With the development of the electronics industry, the function of rosin-type flux can not only require soldering performance, but also require multiple functions. At present, welding flux is required to have the following functions: [0003] (1) Remove the oxides on the welding surface; [0004] (2) Form a protective film on the surface of the weld to isolate the surrounding air at high temperature to prevent re-oxidation of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/36
Inventor 高延敏吕伟刚
Owner 常熟紫金知识产权服务有限公司