A kind of solder wire capable of welding stainless steel materials at low temperature and its preparation method

Abstract

The invention provides a soldering tin wire capable of welding a stainless steel material at low temperature. The soldering tin wire comprises 97%-98.5% by weight of an external tin-based metal alloyand 1.5%-3% by weight of an internal solid active agent. The solid active agent comprises, by weight, 30%-50% of highly-hydrogenated rosin, 10%-20% of fluoride salt, 10%-20% of multi-ethanolamine, 5%-10% of organic metal salt, 5%-10% of borofluoride, 5% of a fluorinion surfactant, 20%-30% of ethanediol 100-200, 5% of a castor oil thixotropic agent, 2%-3% of cetyl trimethyl ammonium bromide and 1%-3% of oleic alcohol polyoxyethylene ether. According to the soldering tin wire capable of welding the stainless steel material at the low temperature, the soldering tin wire capable of welding the stainless steel material at the low temperature can be prepared by limiting the raw materials and the weight proportion of the solid active agent, and the welding effect is good.

Description

Technical field [0001] The invention belongs to the field of production and processing of lead-free tin-based solder, and specifically relates to a solder wire capable of low-temperature welding of stainless steel materials and a preparation method thereof. Background technique [0002] Stainless steel is a common metal material with a wide range of uses. Stainless steel can be seen everywhere from industry to civilian use. For example, most resistors and capacitor wires use stainless steel as pins. Stainless steel welding is one of the indispensable processes for making stainless steel products. Usually, the processes for stainless steel welding are argon arc welding, laser welding, secondary welding, submerged arc welding, and the above welding methods require high temperature electric welders to pass at high temperatures. Welding rod to complete. However, some stainless steel materials cannot be welded at high temperatures, such as stainless steel materials that are easily de...

AI Technical Summary

Problems solved by technology

However, the fluxes in the above two patented technologies use organic acids to achieve rapid wetting and good spreading. Corrosion inhibitors must be used to form stable non-corrosive products with residual corrosive ions and other substances to reduce the corrosion of residues. The welding effect is unstable, and it is easy to cause excessive damage to the material

Images