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Solder composition and preparing method and application thereof

A technology of composition and welding method, which is applied in the direction of welding equipment, welding/welding/cutting items, welding/cutting medium/material, etc., which can solve the problem of weld reliability but can not solve fatigue damage and weld failure, and can not solve brazing Permeability and weld leakage rate and other issues

Active Publication Date: 2014-01-15
GUANGDONG MEIZHI COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, in the welding process, low-silver to silver-free solders cannot solve the brazing permeability and weld leakage rate, and cannot solve the fatigue damage and weld seam failure that may occur during long-term service of the weld seam and copper pipes in terms of weld seam reliability. fail

Method used

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  • Solder composition and preparing method and application thereof
  • Solder composition and preparing method and application thereof
  • Solder composition and preparing method and application thereof

Examples

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Effect test

Embodiment 1

[0083] According to the method for preparing solder composition of the present invention, prepare solder composition, concrete steps are as follows:

[0084] 59 parts by weight of copper, 39 parts by weight of zinc and 2 parts by weight of tin were uniformly mixed, and at least one selected from silicon and phosphorus was not introduced during the preparation process, thereby obtaining a solder composition.

Embodiment 2

[0086] According to the method for preparing solder composition of the present invention, prepare solder composition, concrete steps are as follows:

[0087] 59 parts by weight of copper, 39 parts by weight of zinc and 2 parts by weight of indium were uniformly mixed, and at least one selected from silicon and phosphorus was not introduced during the preparation process, thereby obtaining a solder composition.

Embodiment 3

[0089] According to the method for preparing solder composition of the present invention, prepare solder composition, concrete steps are as follows:

[0090] 55 parts by weight of copper, 40 parts by weight of zinc and 5 parts by weight of silver are uniformly mixed, and at least one selected from silicon and phosphorus is not introduced during the preparation process, thereby obtaining a solder composition.

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Abstract

The invention discloses solder composition and a preparing method and application thereof. The solder composition comprises first metal and second metal. The first metal is at least one of copper, nickel and manganese. The second metal is at least one of zinc, silver, copper, nickel, manganese and chrome. The first metal and the second metal are different. The solder composition does not contain at least one of silicon and phosphorus. The solder composition can be effectively used for connecting objects made of different kinds of metal, and the solder composition is especially suitable for copper-steel brazing of an air sucking pipe and an exhaust pipe of a compressor. Compared with existing silver-based solder, the solder composition is low in production cost, compared with national standard copper zinc solder, the solder composition is good in brazing permeability, high in welding intensity, good in welding filling performance and reliability and strong in corrosion resistance, base metal in an application range is strong in adaptability, and welding reject ratio and airtight leakage rate are low.

Description

technical field [0001] The present invention relates to a solder composition and its preparation method and use, specifically, the present invention relates to a solder composition, a method for preparing the solder composition, a welding method, a method for preparing a connecting body and the use of the solder composition in preparing a compressor. Background technique [0002] The compressor is a pressure vessel, which bears alternating stress during operation. The operating pressure is 1.5←→4.3MPa, the number of cycles is >100,000, the failure stress after fatigue is >10.5MPa, and the service life is required to be 10 years. Therefore, for the compressor The solder and welding process requirements for the welding of the suction and exhaust pipes and the cylinder are very high. The welding of the suction and exhaust pipes of the compressor and the barrel is brazed with dissimilar materials of red copper and low carbon steel. At present, the brazing of the two connec...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K1/00
CPCB23K1/00B23K1/0004B23K1/002B23K35/302B23K2103/22
Inventor 徐利华陈湘平卫国强余伟锋
Owner GUANGDONG MEIZHI COMPRESSOR
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