Brazing filler metal for connecting copper and stainless steel, application of brazing filler metal and method for welding silencer

A technology of stainless steel and muffler, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc. It can solve the problems of unsatisfactory muffler muffler effect, reduced service life and low production cost, and achieve good muffler effect, Increased service life and low production costs
CN103252595AInactive Publication Date: 2013-08-21ANHUI ZHONGHUI REFRIGERATION
7 Cites 14 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ANHUI ZHONGHUI REFRIGERATION
Publication Date
2013-08-21
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention relates to brazing filler metal for connecting copper and stainless steel, application of the brazing filler metal and a method for welding a silencer and belongs to the field of brazing filler metal and silencer welding methods. The brazing filler metal comprises, by weight, 26-34 percent of Cu, 34-35 percent of Ag, 5-8 percent of Co, 2-4.5 percent of Li, 1-1.5 percent of Sn, 0.2-1.8 percent of Ni, 1.8-2 percent of B, 0.5-1.3 percent of Mn, 0.1-1.4 percent of Si, 0.03-0.16 percent of mischmetal and the balance of Zn. The mischmetal is composed of La and Pr, the mass ratio of La and Pr is equal to the mass ratio of Cu and Ag. When the brazing filler metal for connecting the copper and the stainless steel is applied to welding of the silencer, flames are utilized for welding, the requirement for welding is met, meanwhile, welding efficiency is high, production cost is low, a noise reduction effect after the silencer is welded is good, and the service life of the silencer is prolonged.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of brazing material and a welding method for a muffler, in particular to a brazing material connecting copper and stainless steel, its application and a method for welding a muffler. Background technique

[0002] Brazing is to use brazing material with a lower melting point than the base metal to heat the base metal together. When the base metal does not melt, the brazing material is melted, and the gap between the joints of the base metal is wetted and filled to form a weld. In the brazing joint, the solder and the base metal dissolve and diffuse into each other to form a firm bond. Brazing has the advantages of low heating temperature, small changes in the structure and mechanical properties of weldments, flat and smooth joints, and beautiful appearance, and it can connect different materials. However, brazing also has obvious disadvantages, that is, the strength of brazed joints is relatively low, so lap joints ar...

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