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

Lead-free alloy for low-temperature welding welder

A lead-free alloy, weight technology, used in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problem of re-checking the heat resistance limit, etc., to reduce the amount of dross, reduce lead poisoning, and improve the reliability. wet effect

Inactive Publication Date: 2009-09-23
HEESUNG MATERIAL
View PDF0 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And when using traditional PCB, you need to check the heat resistance limit again

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
  • Lead-free alloy for low-temperature welding welder
  • Lead-free alloy for low-temperature welding welder

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0032] A lead-free alloy in which 20% by weight of bismuth, 1.5% by weight of indium, 0.01% by weight of phosphorus, and tin was produced was produced.

example 2

[0034] A lead-free alloy in which 20% by weight of bismuth, 1.5% by weight of indium, 0.5% by weight of antimony, 0.01% by weight of phosphorus, and tin was produced was produced.

example 3

[0036] A lead-free alloy in which 25% by weight of bismuth, 1.0% by weight of copper, 0.01% by weight of phosphorus, and tin was produced was produced.

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 relates to lead-free alloy, which is suitable for use in welding for fixing parts on a substrate and for use on an external electrode for EEFL during the production of electric appliance and electronic products, so that a melting point and welding strength which are better than the prior welding can be obtained without lead. In addition, the alloy is free from lead and can reduce the influences of coal gas and the like generated during welding on human bodies to the maximum degree. Meanwhile, the lead-free alloy has the characteristic that: tin (Sn) is added with 10 to 30 weight percent of bismuthism (Bi), 0.001 to 2.0 weight percent of indium (In), and 0.001 to 0.5 weight percent of phosphor (P), as well as one or more of stibium (Sb), silver (Ag), copper (Cu), germanium (Ge) and gallium (Ga) as additives.

Description

[0001] [Detailed description of the invention] 【Technical field】 [0002] The invention relates to a lead-free alloy for welding, and the welding is completed in the lead-free alloy, thereby reducing disadvantages such as lead poisoning. [0003] Generally, soldering is to join metals by melting solder, so metals with a melting temperature lower than that of the metals to be joined can be roughly divided into leaded solders whose melting temperature is lower than tin (327°C) and leaded solders whose melting temperature generally exceeds 450°C. ℃ hard solder. The components of leaded solder are lead and tin, which have different tensile strength and shear strength according to their content. On the other hand, brazing material is composed of powder, strip, wire, etc., and brass, lead, and silver (Ag) whose main components are copper (Cu), zinc (Zn), and lead (Pb) are added. Silver solder to improve fluidity, etc. [0004] Generally, when electronic equipment is discarded due...

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): B23K35/26
Inventor 南基平姜宗太
Owner HEESUNG MATERIAL
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