Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Copper soldering paste

A copper solder paste and paste-forming technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve problems such as damage, high flux content, excessive corrosion, etc., achieve low melting point, easy welding, The effect of increasing binding force

Inactive Publication Date: 2018-06-01
SUZHOU CUBRAZING MATERIALS CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the flux content in the current copper solder paste is high. Because fluoroborate is highly corrosive at high temperature, it will cause excessive corrosion and damage to the parts to be welded and the brazing equipment. After welding, the parts need to be cleaned. The corrosive volatiles in the welding process will also bring a series of problems to the working environment and environmental protection

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Take by weighing each component in the brazing material in the proportioning ratio of 95% by weight of tin, 4% by weight of silver and 1% by weight of copper, then place each component of the solder in the soldering material that weighs in the crucible , at 1180 ° C, and melted into solder under vacuum conditions; according to 15% by weight of polyethylene propylene, 81% by weight of diethylene glycol monoethyl ether, 3% by weight of fatty acid glycerides and 1% by weight of not The ratio of saturated fatty acids is weighed into each component in the paste, and then melted into a paste at 120°C;

[0025] 2) Add the weighed brazing filler metal and sebacic acid into the paste, stir and mix for 30 minutes, and stir evenly to obtain a molten material mixture, and obtain a brazing paste.

[0026] The prepared copper solder paste is mainly used for welding low-carbon steel parts. After welding, there is no residue on the surface of the parts, the weld seam is fine and den...

Embodiment 2

[0028] 1) Take by weighing each component in the brazing material in the proportioning ratio of 95% by weight of tin, 4% by weight of silver and 1% by weight of copper, then place each component of the solder in the soldering material that weighs in the crucible , at 1180 ° C, and melted into solder under vacuum conditions; by 15% by weight of polyethylene propylene, 81% by weight of diethylene glycol monoethyl ether, 3% by weight of nonionic surfactant and 1% by weight The proportioning of animal oil of % is taken by weighing each component in the paste, and then it is smelted into paste at 120°C;

[0029] 2) Add the weighed brazing material and succinic acid into the paste, stir and mix for 35 minutes, and stir evenly to obtain a molten material mixture, and obtain a brazing paste.

[0030] The prepared copper solder paste is mainly used for welding low-carbon steel parts. After welding, there is no residue on the surface of the parts, the weld seam is fine and dense, and it...

Embodiment 3

[0032] 1) Take by weighing each component in the brazing material in the proportioning ratio of 95% by weight of tin, 4% by weight of silver and 1% by weight of copper, then place each component of the solder in the soldering material that weighs in the crucible , at 1180 ° C, and melted into solder under vacuum conditions; according to 15% by weight of polyethylene propylene, 81% by weight of dipropylene glycol monomethyl ether, 3% by weight of non-ionic surfactant and 1% by weight The proportioning of the activator (containing unsaturated fatty acid and animal oil) is weighed into each component in the paste, and then melted into a paste at 120°C;

[0033] 2) Add the weighed brazing material and lauric acid into the paste, stir and mix for 45 minutes, and stir evenly to obtain a molten material mixture, and obtain a brazing paste.

[0034] The prepared copper solder paste is mainly used for welding low-carbon steel parts. After welding, there is no residue on the surface of ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a copper soldering paste, which is prepared from the following components in parts by weight: 70 to 85 parts of brazing filler metal, 15 to 22 parts of paste forming body, anda soldering flux with the dosage being 5 to 8 parts of the mass of the brazing filler metal. The brazing filler metal is prepared from 94 to 96 percent by weight of tin, 3 to 4 percent by weight of silver, and 1 to 1.5 percent by weight of copper; the soldering flux is selected from at least one of sebacic acid, succinic acid and lauric acid boric acid; and the paste forming body is prepared fromthe following components in percentage by weight: 14 to 16 percent of polyethylene propylene, 65 to 95 percent of solvent, 2 to 3 percent of nonionic surfactant, and 0.8 to 1.1 percent of activating agent. According to the copper soldering paste provided by the invention, a small amount of soldering flux is used, no fluorine-containing substance is contained in the used soldering flux, and only organic substances are used, so that the copper soldering paste has remarkably low corrosivity on parts; and the brazing filler metal is prepared from the tin, the silver and the copper with a specificmatching ratio, so that the obtained copper soldering paste is low in melting point and easy to solder.

Description

technical field [0001] The invention relates to a copper solder paste, which belongs to the technical field of welding materials. Background technique [0002] With the development of high-efficiency mass production of modern industrial automation brazing, the welded workpieces are increasingly miniaturized and mass-produced, and the shape of the weld seam is constantly diversified and complicated. It is the trend of the times to replace the traditional wire-like, ring-like and strip-like welding materials with paste-like welding materials-brazing paste to realize high-efficiency automatic welding production. In recent years, my country has continuously introduced foreign advanced automatic brazing production lines, such as flame automatic brazing production lines and protective atmosphere mesh belt furnace brazing production lines; at the same time, many domestic manufacturers have independently developed more advanced automatic brazing production lines to meet the growing ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/26B23K35/40B23K35/36
Inventor 莫文剑
Owner SUZHOU CUBRAZING MATERIALS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com