Brazing method for connecting stainless steel and red copper
By using high silver solder for vacuum brazing, the problem of excessive solder accumulation in stainless steel and copper welding is solved, and the high strength and toughness of the solder joints are achieved, which is suitable for a variety of application environments.
CN119703247APending Publication Date: 2025-03-28FOSHAN LIANYI THERMAL ENERGY TECH CO LTD
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Patent Information
- Application Number
- CN202411952682.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-03-28
AI Technical Summary
Technical Problem
In the prior art, during the welding process of stainless steel and copper, solder accumulation is too high, resulting in insufficient strength of the solder joint and is not suitable for frequent vibration and low temperature environments.
Method used
Vacuum brazing is performed using high-silver solder (silver accounts for 40% to 60% of the solder weight percentage and copper accounts for 40% to 60% of the solder weight percentage) to ensure that the solder stacking height is within 1 mm and cool in an argon or nitrogen environment.
Benefits of technology
It effectively reduces solder accumulation, improves the strength and toughness of solder joints, and is suitable for use in frequent vibration and low temperature environments, expanding application scenarios.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention belongs to the technical field of metal brazing, and discloses a brazing method for connecting stainless steel and red copper. The method comprises the following steps that high-silver solder is applied to the joint of stainless steel and red copper, and then the stainless steel and the red copper are placed in a vacuum brazing furnace to be brazed; in the high-silver solder, silver accounts for 40%-60% of the weight of the solder, copper accounts for 40%-60% of the weight of the solder, and the content of inevitable impurities is smaller than or equal to 0.1%. According to the brazing method, the red copper and the stainless steel materials can be connected in a brazing mode, the mobility of the adopted high-silver welding flux is good, the stacking height of the welding flux can be controlled within 1 mm and is almost close to a flat welding spot, and the problem that workpiece assembly is affected due to the fact that the stacking height of the welding spot is too high can be effectively solved; meanwhile, the adopted high-silver welding flux has high toughness and is not prone to embrittling and cracking, the flat welding spot strength and the welding spot strength with higher drawing resistance can be synchronously achieved, and the application scene range can be widened.
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