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Low-silver medium temperature and high strength environment-friendly solder, and preparation method thereof

A high-strength, medium-temperature technology, applied in the direction of manufacturing tools, welding equipment, metal processing equipment, etc., can solve the problems of brazing temperature, fluidity and mechanical properties, and achieve the effect of excellent solder wettability and fluidity

Inactive Publication Date: 2018-02-06
JINHUA SANHUAN WELDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, Ag-Cu-P series alloy materials are the key research and development targets in the brazing industry, and some Ag-Cu-P series alloy silver-based solders containing tin and gallium solders have appeared, mainly including Ag-Cu-P-Sn system, Ag-Cu-P-Ga system, etc., although the silver content has decreased, there is still a gap in brazing temperature, fluidity and mechanical properties compared with 5% silver-containing Ag-Cu-P materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A low-silver, medium-temperature, high-strength, environmentally friendly brazing filler metal consists of the following mass ratios: 1.7% silver, 1.3% manganese, 0.5% phosphorus, 19% aluminum, 1% nickel, 0.6% gallium, 0.8% indium, and 1.5% calcium %, the rest is copper.

[0015] A method for preparing low-silver, medium-temperature, high-strength, environmentally friendly brazing filler metal, characterized in that: 1) Putting pure aluminum into a crucible and placing it in a resistance melting furnace, while filling the furnace with argon protection, and the melting temperature is 650 Melting under the condition of ℃ for 25 minutes; 2), put the pure copper into the crucible and place it in the resistance melting furnace, fill the furnace with argon protection at the same time, and melt it for 21 minutes at the melting temperature of 1080 ℃; 3 ), then add silver, manganese, phosphorus, nickel, gallium, indium, and calcium to the crucible in turn, and keep warm for 25 m...

Embodiment 2

[0017] A low-silver, medium-temperature, high-strength, environmentally friendly brazing filler metal consists of the following mass ratios: 2.2% silver, 2% manganese, 0.7% phosphorus, 19% aluminum, 0.9% nickel, 0.5% gallium, 0.8% indium, and 1.7% calcium %, the rest is copper.

[0018] A method for preparing low-silver, medium-temperature, high-strength, environmentally friendly brazing filler metal, characterized in that: 1) Putting pure aluminum into a crucible and placing it in a resistance melting furnace, while filling the furnace with argon protection, and the melting temperature is 670 Melting under the condition of ℃ for 28 minutes; 2), put the pure copper into the crucible and place it in the resistance melting furnace, fill the furnace with argon protection at the same time, and melt it for 23 minutes at the melting temperature of 1100 ℃; 3 ), then add silver, manganese, phosphorus, nickel, gallium, indium, and calcium to the crucible in turn, and keep warm for 25 m...

Embodiment 3

[0020] A low-silver, medium-temperature, high-strength, environmentally friendly brazing filler metal consists of the following mass ratios: 2.6% silver, 2% manganese, 0.7% phosphorus, 23% aluminum, 1.2% nickel, 0.5% gallium, 0.9% indium, and 2.2% calcium. %, the rest is copper.

[0021] A method for preparing low-silver, medium-temperature, high-strength, environmentally friendly brazing filler metal, characterized in that: 1) Putting pure aluminum into a crucible and placing it in a resistance melting furnace, while filling the furnace with argon protection, and the melting temperature is 620 Melting under the condition of ℃ for 28 minutes; 2), put the pure copper into the crucible and place it in the resistance melting furnace, fill the furnace with argon protection at the same time, and melt it for 24 minutes at the melting temperature of 1110°C; 3 ), then add silver, manganese, phosphorus, nickel, gallium, indium, and calcium to the crucible in turn, and keep warm for 25 ...

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Abstract

The invention discloses a low-silver medium temperature and high strength environment-friendly solder. The environment-friendly solder comprises silver, manganese, phosphorus, aluminum, nickel, gallium, indium, calcium and the balance copper according to the mass ratio, and the components are put into a crucible for smelting at high temperature, so that composite solder alloy blocks are prepared finally; the product prepared with the method disclosed by the invention has the beneficial effects that the manufacturing cost is low, and the preparation is simple; the waste of resources is reduced,and the production and soldering temperature is reduced; and the wettability and fluidity of the solder are improved, and at the same time the emission of environmental pollutants is reduced.

Description

technical field [0001] The invention relates to the field of refrigeration materials, in particular to a low-silver, medium-temperature, high-strength, environment-friendly solder and a preparation method thereof. Background technique [0002] In recent years, with the development of the economy, the consumption of resources and energy in my country has increased sharply, and the pressure on resources and environmental protection has continued to increase. In order to alleviate the contradiction between limited resources and excessive consumption, develop green manufacturing technology, realize energy saving and consumption reduction, Circular economy based on emission reduction and efficiency enhancement is the only way for my country's sustainable economic development. In August 2008, my country's first "Circular Economy Promotion Law" was promulgated and came into effect in January 2009. Behind the promulgation of these policies is the fact that my country's resources and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30
Inventor 邵丹沈义龙陈土华
Owner JINHUA SANHUAN WELDING MATERIALS
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