Brazing ring and brazing system

A brazing and brazing material technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problem of insufficient filling of the weld seam, achieve the effect of prolonging the flow time and improving the quality of brazing

Pending Publication Date: 2018-01-23
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the embodiments of the present invention is to provide a brazing ring, which aims to solve the technical problem of insufficient filling of the weld between the existing U-shaped pipe and the small elbow.

Method used

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  • Brazing ring and brazing system
  • Brazing ring and brazing system

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Embodiment Construction

[0018] In order to make the purpose, solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as there is no conflict with each other.

[0019] In order to facilitate those skilled in the art to understand the embodiment of the present invention, the inventor explains the working principle of automatic welding by using the brazing ring as follows:

[0020] Brazing is to use a metal material whose liquid phase temperature is lower than the solid phase temperature of the base metal as the solder, heat the base metal and the solder until the solder melts, use the liquid phase s...

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Abstract

The invention relates to the technical field of welding ring manufacture, in particular to a brazing ring and a brazing system. The brazing ring comprises brazing filler metal. The brazing filler metal comprises an inner brazing filler metal layer and an outer brazing filler metal layer, wherein the inner brazing filler metal layer has a first melting point, the inner brazing filler metal layer iswrapped by the outer brazing filler metal layer, the outer brazing filler metal layer has a second melting point, and the second melting point is higher than the first melting point. According to theimplementation manner, the brazing ring is designed into the composite structure comprising the inner brazing filler metal layer and the outer brazing filler metal layer, in the later period of brazing, when the outer brazing filler metal layer is solidified, the inner brazing filler metal layer is still in the liquid state, pores and small gaps between welded pipes can be further filled, the flow time of the brazing filler metal is prolonged, and the brazing quality is improved.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of welding ring manufacturing, in particular to a brazing ring and a brazing system. Background technique [0002] Aluminum tube-fin heat exchangers used in air conditioners contain a series of U-shaped tubes in the fins. Wherein, the U-shaped pipe is generally connected with the small elbow by brazing, and solder filling is required during the brazing process. In order to realize automatic welding, the solder filling in the prior art is generally to insert a welding ring on the small elbow, and use the welding ring to act as solder to fill the weld seam between the U-shaped pipe and the small elbow to realize automatic welding. Among them, due to the narrow brazing temperature range of aluminum tubes, in order to avoid burning the small elbow due to excessive flame temperature during the welding process, the flame is generally directly heated to the welding ring area. [0003] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/14
Inventor 熊佳龙朱宏亮李超男彭楚堂王琳王红霞马颖江陈龙张强
Owner GREE ELECTRIC APPLIANCES INC
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