Pretreatment method for hard solder on partial surface of magnesite product
A local, brazing technology, applied in the direction of welding medium, welding equipment, metal material coating process, etc., can solve the problems of segregation, deformation of magnesium alloy, and corrosion of magnesium alloy by flux without consideration
Inactive Publication Date: 2009-05-13
何靖
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Abstract
The invention relates to a preprocessing method for brazing on the partial surface of magnesium material, wherein, the preprocessing method includes two novel technologies including the magnesium alloy surface upgrading and processing technology without electronickelling and the technology for manufacturing special soldering flux to coordinate with a plurality of leadless tin alloy solders; the welding method adopts the process flow that the medium phosphorus (the content of phosphorus is 3-7 percent ) without electronickelling process is performed on the surface of the magnesium-alloy work piece at first, then the high phosphorus (the content of phosphorus is 7-12 percent) without electronickelling process is performed, and the tin welding process is performed finally.
Application Domain
Liquid/solution decomposition chemical coatingWelding/cutting media/materials +2
Technology Topic
Nickel electroplatingL&D process +6
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