Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High tin and silver base welding rod and preparation method thereof

A welding rod and silver-based technology, applied in welding equipment, welding medium, manufacturing tools, etc., can solve the problems that high-tin-silver solder cannot be made into welding rod, the processing performance of the solder is deteriorated, and it cannot meet the requirements, so as to meet the welding production process requirements, The effect of low cost and easy operation

Active Publication Date: 2014-01-01
ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
View PDF8 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the use of solder, in order to further reduce the melting temperature of the solder and improve the wettability of the solder to reach the level of the solder containing Cd, it is necessary to further increase the tin content, but the brittleness of the high-tin-silver electrode will cause solder The processing performance of the material deteriorates, so that the high-tin-silver solder cannot be made into welding rods, which cannot meet the welding needs of brazing electrical and electronic workpieces.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High tin and silver base welding rod and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: Preparation of Ag29Cu35Zn30Sn6 electrode

[0018] The first step is to atomize tin (Sn) and copper (Cu) with a lower melting point into alloy powder according to the weight ratio of Cu20 and Sn80;

[0019] The second step is to melt the alloy ingot according to the percentage ratio of silver (Ag): 31.5%, copper (Cu): 35.9%, zinc (Zn): 32.6%:

[0020] 1. Melt copper in an intermediate frequency furnace, add silver when the temperature reaches 1150~1200°C, and cover it with a compound salt prepared with dehydrated borax and boric anhydride in a weight ratio of 7:3 after fully melting; reduce the temperature of the molten metal to 950~1000°C ℃, add zinc;

[0021] 2. After the zinc is fully fused, the metal solution is allowed to stand still for 30-60 minutes and then poured into an ingot with an outer diameter of 90 mm;

[0022] The third step is to remove the outer skin of the cast ingot and perform homogenization annealing in a box-type resistance furna...

Embodiment 2

[0026] Embodiment 2: Preparation of Ag44Cu26Zn23Sn7 electrode

[0027] The first step, with embodiment 1;

[0028] The second step is to melt the alloy ingot according to the percentage ratio of silver (Ag): 48.2%, copper (Cu): 26.6%, zinc (Zn): 25.2%:

[0029] 1. Melt copper in an intermediate frequency furnace, add silver when the temperature reaches 1150~1200°C, and cover it with a compound salt prepared with dehydrated borax and boric anhydride in a weight ratio of 7:3 after fully melting; reduce the temperature of the molten metal to 950~1000°C ℃, add zinc;

[0030] 2. After the zinc is fully fused, the metal solution is allowed to stand still for 30-60 minutes and then poured into an ingot with an outer diameter of 90 mm;

[0031] The third step to the fifth step are the same as in Embodiment 1.

Embodiment 3

[0032] Embodiment 3: Preparation of Ag55Cu21Zn16Sn8 electrode:

[0033] The first step, with embodiment 1;

[0034] The second step is to melt the alloy ingot according to the percentage ratio of silver (Ag): 61.1%, copper (Cu): 21.2%, zinc (Zn): 17.8%:

[0035] 1. Melt copper in an intermediate frequency furnace, add silver when the temperature reaches 1150~1200°C, and cover it with a compound salt prepared with dehydrated borax and boric anhydride in a weight ratio of 7:3 after fully melting; reduce the temperature of the molten metal to 950~1000°C ℃, add zinc;

[0036] 2. After the zinc is fully fused, let the metal solution rest for 30-60 minutes and then cast it into an ingot with an outer diameter of 90mm;

[0037] The third step to the fifth step are the same as in Embodiment 1.

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 a high tin and silver base welding rod and a preparation method thereof. The high tin and silver base welding rod is made of raw materials of 24-61% of silver, 20-41% of copper, 12-35% zinc and 6-12% tin. The preparation method includes atomizing copper and zinc in proportion into powdered alloy, melting copper, adding silver at a certain temperature, covering with compound salt after fully melting, lowering the temperature of metallic solution, adding zin to continue melting, stilling the metallic solution after the zinc is melted fully, pouring the metallic solution into ingot casting, transfer the ingot casting into a resistance furnace to homogenize and anneal after being rough turned, squeezing the ingot casting into a 3.5mm plate and strip, rolling into 0.2mm ribbons by multi passes and small turns ratio after being annealed online, and combing with, drawing and cutting off with the atomized powdered alloy via a flux-cored wire machine to acquire finished product welding rods 1.0-2.5mm in diameter. The preparation method is simple in operation, has good stability and low in production cost, and solves the problem that high tin and silver base brazing filler metal is hard to be processed into welding rods.

Description

technical field [0001] The invention relates to high-tin-silver solder, in particular to a high-tin-silver-based welding rod suitable for brazing electric appliances and electronics that do not bear impact and bending workpieces, and also relates to a preparation method of the welding rod. Background technique [0002] Brazing grade Ag Cu Zn Cd sn Si Solidus / ℃ Liquidus line / ℃ Ag25CuZnSn 24～26 39～41 31～35 0.01 1.5～2.5 0.05 680 760 Ag30CuZnSn 29～31 35～37 30～34 0.01 1.5～2.5 0.05 665 755 Ag34CuZnSn 33～35 35～37 25.5～29.5 0.01 2.0～3.0 0.05 630 730 Ag38CuZnSn 37～39 35～37 26～30 0.01 1.5～2.5 0.05 650 720 Ag40CuZnSn 39～41 29～31 26～30 0.01 1.5～2.5 0.05 650 710 Ag45CuZnSn 44～46 26～28 23.5～27.5 0.01 2.0～3.0 0.05 640 680 Ag55CuZnSn 54～56 20～22 20～24 0.01 1.5～2.5 0.05 630 660 Ag56CuZnSn 55～57 21～23 15～19 0.01 4.5～5.5 0.05 620 655 Ag60CuZnSn 59～61 22～24 12～1...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/40
CPCB23K35/3006B23K35/40
Inventor 龙伟民张冠星裴夤崟钟素娟张强马佳樊江磊鲍丽王洋赵建昌黄小勇
Owner ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com