Low-silver-content cadmium-free solder

A technology of silver content and brazing material, applied in welding/cutting medium/material, welding medium, metal processing equipment, etc., can solve the problem of cadmium harmful environmental pollution, disadvantage, etc. The effect of high wettability

Inactive Publication Date: 2014-07-09
JINHUA SANHUAN WELDING MATERIALS
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the harmful effects of cadmium on human health and adverse effects on environmental poll

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0010] Example 1:

[0011] According to the components of the solder alloy, the weight percentage composition of the alloy components is: silver 24%, zinc 31.5%, manganese 0.8%, nickel 0.5%, and the balance is copper. The prepared brazing filler metal is processed into a wire with a diameter of 2.0mm, combined with FB102 brazing flux, and the copper alloy base metal is welded by conventional methods. The base metal has good wettability, good flowability, and tensile strength of 355MPa, melting The temperature is about 800℃, and the brazing temperature is about 905℃.

Example Embodiment

[0012] Example 2:

[0013] According to the alloy composition of the solder, the weight percentage composition of the alloy composition is: 25% silver, 33% zinc, 0.8% manganese, 0.5% nickel, and the balance is copper. The prepared brazing filler metal is processed into a wire with a diameter of 2.0mm, combined with FB102 brazing flux, and the copper alloy base metal is welded by conventional methods. The base metal has good wettability, good flowability, and tensile strength of 355MPa, melting The temperature is around 793℃, and the brazing temperature is around 899℃.

Example Embodiment

[0014] Example 3:

[0015] According to the components of the solder alloy, the weight percentage of the alloy components is composed of 26% silver, 35% zinc, 0.8% manganese, 0.5% nickel, and the balance is copper. The prepared brazing filler metal is processed into a wire with a diameter of 2.0mm, combined with FB102 brazing flux, and the copper alloy base metal is welded by conventional methods. The base metal has good wettability, good flowability, and tensile strength of 355MPa, melting The temperature is about 787℃, and the brazing temperature is about 891℃.

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

PUM

No PUM Login to view more

Abstract

The invention discloses low-silver-content cadmium-free solder and relates to the technical field of soldering. The low-silver-content cadmium-free solder is prepared by proportionally smelting raw materials comprising silver, copper, zinc, manganese and nickel, uniformly stirring, casting, and subjecting a cast ingot to squeezing and drawing so as to obtain a needed solder wire material. The low-silver-content cadmium-free solder comprises, by weight, 24%-26% of the silver, 31.5%-35% of the zinc, 0.8%-2.5% of the manganese, 0.5%-2.0% of the nickel, and the balance copper. By adding small amounts of the nickel and the manganese in the silver solder, wettability and joint strength of the solder can be enhanced, good effects on crystal boundary purification, plasticity improvement and strength enhancement can be achieved, processability of the low-silver-content cadmium-free solder can be improved, and production cost is lowered since silver content is reduced.

Description

technical field [0001] The invention relates to the technical field of welding, in particular to a cadmium-free solder with low silver content. Background technique [0002] Brazing is an important means of stainless steel welding. The traditional brazing silver solder is cadmium-containing solder, which is widely used because of its excellent brazing process performance and technical economy. However, due to the harmful effects of cadmium on human health and adverse effects on environmental pollution, certain restrictions have been placed on the use of cadmium-containing materials internationally. Brazing is an important means of stainless steel welding. The current silver-based solder is mainly based on three alloys of silver, copper and zinc. Since the practical use of cadmium is prohibited, the industry began to look for a substitute for cadmium to achieve seamless welding. Cadmium, to obtain the same performance as traditional cadmium-containing solder, usually needs to...

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

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B23K35/30
CPCB23K35/40B23K35/302
Inventor 张玉海
Owner JINHUA SANHUAN WELDING MATERIALS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap