Silver-based brazing paste and preparation method and application thereof

A brazing paste, silver-based technology, applied in welding equipment, welding media, manufacturing tools, etc., can solve the problems of complex preparation process and high processing cost, and achieve simple operation process, high welding quality consistency, and easy automatic welding. Effect

Inactive Publication Date: 2021-05-07
ZHEJIANG FUDA ALLOY MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the traditional silver-based solder paste preparation process is more complicated, such as Figure 4 As shown, the processing cost is high, and it is urgent to develop a silver-based solder paste with low cost, simple operation and good brazing effect.

Method used

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  • Silver-based brazing paste and preparation method and application thereof
  • Silver-based brazing paste and preparation method and application thereof
  • Silver-based brazing paste and preparation method and application thereof

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] Such as Figure 1 to Figure 3 As shown, in the embodiment of the present invention, the present invention can obtain silver-based solder paste with low cost and high soldering quality through a simple preparation process. The present embodiment provides a kind of preparation method of the silver brazing paste of high soldering quality, and its implementation step is processed in the existing dispersing mixer;

[0026] Step 1: Preparation of binder. In this step, the binder is mixed and stirred with polyisobutylene, D80 solvent oil, surfactant, thixotropic agent and other materials. The specific operations are as follows:

[0027] Select a stainless steel container and mark the weight, weigh a certain amount of polyisobutylene with an electronic scale, add ...

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Abstract

The invention discloses silver-based brazing paste and a preparation method and application thereof. According to the technical scheme, the silver-based brazing paste comprises 35 wt%-40 wt% of a binder and soldering flux based on the total amount, the mass ratio of the binder to the soldering flux is 1:(1-1.2), and silver-based solder metal powder accounts for 60 wt%-65 wt% of the total amount; and alloy welding powder is composed of AgCu alloy powder and CuZn alloy powder, and the mass ratio of the AgCu alloy powder to the CuZn alloy powder is AgCu:CuZn=(0.5:1)-(2:1). The silver-based brazing paste and the preparation method and application thereof have the advantages of being low in cost, simple in operation and good in brazing effect.

Description

technical field [0001] The invention relates to the field of soldering technology, in particular to a silver-based solder paste with high soldering quality and a preparation method thereof. Background technique [0002] Solder paste is a homogeneous and stable mixture, which is a paste with certain viscosity and good thixotropy, which is mixed with alloy solder powder, paste flux and some additives. Silver-based solder paste can stick the contacts to the predetermined position of the bracket at room temperature. When the solder paste is heated to a certain temperature, with the volatilization of solvents and some additives and the melting of alloy powder, the solder paste reflows to make the soldered contacts Points and supports are interconnected and cooled to form permanently attached solder joints. Silver-based solder paste has a low melting point, good wettability and seam filling ability, and the brazing seam area has the advantages of high bonding strength and high co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/02B23K35/30
CPCB23K35/025B23K35/3006
Inventor 申志刚胡均高程霞向坤铃万岱陈松扬张加林姚永锋黄庆忠张明江王达武
Owner ZHEJIANG FUDA ALLOY MATERIALS TECH CO LTD
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