Unlock instant, AI-driven research and patent intelligence for your innovation.

Antioxidation tin lead series alloy welding flux

An anti-oxidation and soldering technology, applied in the direction of welding/cutting media/materials, welding media, welding equipment, etc., can solve the problems that the interaction cannot be fundamentally improved, the cost of alloy raw materials is high, and the price is very expensive. It is easy to promote Use, simplified alloy composition, and wide application range

Inactive Publication Date: 2008-08-27
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these raw material purification and deoxidation treatment technologies cannot fundamentally improve the interaction between tin in the solder and oxygen in the air, thereby improving the oxidation resistance of the existing tin-lead solder
For this reason, the Chinese patent (CN85 1 00578 B) once provided a method for improving the oxidation resistance of tin-lead solder by adding an alloy of precious metal indium and rare earth elements, but the price of indium is very expensive, and the raw material cost of the alloy is relatively high , so it is difficult to implement

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

Embodiment 1

[0019] Configure Pb37%, P0.06%, and the rest is Sn-Pb eutectic alloy, select common melting technology for alloying, obtain master alloy, then place master alloy in an open crucible, heat and melt under atmospheric pressure until 250 ℃, scrape off the scum on the liquid surface, and keep warm at this temperature for a long time, observe the color change of the liquid surface of the alloy melt, so as to evaluate the effect of the alloy on high temperature oxidation resistance. It was found that the alloy can still keep the liquid surface bright when kept at 250°C for 5 hours. After the alloy is cooled from high temperature to room temperature, the surface is bright and silvery white, indicating that the alloy has good oxidation resistance.

Embodiment 2

[0021] Configure Pb37%, Ge0.01%, the rest is the Sn-Pb eutectic alloy of Sn, test by the method of embodiment 1, it is found that this alloy can still keep the liquid surface bright when kept at 250 DEG C for 5 hours. After the alloy is cooled from high temperature to room temperature, the surface is bright and silvery white, indicating that the alloy has good oxidation resistance.

Embodiment 3

[0023] Configuration Pb36%, Ag2%, Ge0.1%, the rest is the Sn-Pb eutectic alloy of Sn, tests by the method for embodiment 1, it is found that this alloy can still keep the liquid level bright at 250 ℃ for 5 hours. After the alloy is cooled from high temperature to room temperature, the surface is bright and silvery white, indicating that the alloy has good oxidation resistance.

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

An antioxidizing SnPb alloy solder features that it contains Ge and / or P (0.001-0.2%) for improving its antioxidizing performance in high-temp liquid state.

Description

Technical field: [0001] The present invention relates to solder alloys in the welding field, and particularly provides a kind of Sn-Pb-X, Sn-Pb-Ag-X and Sn-Pb-Sb-X (wherein X refers to P or Ge) alloy solder. Background technique: [0002] Soldering is a very old and practical technology, mainly using a tin-lead alloy based system. Since tin-lead solder has good flowability on copper, copper alloys and steel, low melting point, good corrosion resistance, certain strength, good electrical conductivity, good mechanical properties and process properties, it is now widely used Used in the electronics industry (over 70% of total solder consumption). In addition, it is also widely used in instrumentation electrical manufacturing, automobile industry, food industry and other machinery manufacturing industries. From the perspective of the composition of the solder, most solder alloys are simple combinations of tin and lead binary alloys, and the tin content varies from 5 to 95%, a...

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 Patents(China)
IPC IPC(8): B23K35/26
Inventor 冼爱平郭建军尚建库
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI