Mixed powder particle hot-pressing pre-forming special tin soldering material and preparing method thereof

• Main Author: TANG CHANGWU
• Format: Patent
• Language: Chinese; English
• Published: 04.09.2018
• Subjects: CASTING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; POWDER METALLURGY; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM; WORKING METALLIC POWDER

The invention discloses a mixed powder particle hot-pressing pre-forming special tin soldering material and a preparing method thereof. The mixed powder particle hot-pressing pre-forming special tin soldering material comprises two-dimensional plane soldering flux and three-dimensional plane soldering flux, the two-dimensional plane soldering flux comprises an oval tin flake, a square tin flake, around tin flake and a polygonal tin flake, the three-dimensional plane soldering flux comprises a polygonal tin ring, a tin ring, a rectangular tin loop, an oval tin loop, a tin sleeve and a tin column, a molding metal die comprises an upper punch, a middle die, a lower punch and a core bar, and scaling powder comprises tin, copper, silver, bismuth, zinc, lead, gold and nickel; and materials aremixed and charged into a die cavity, pressure and temperature are applied, hot pressing is carried out, demolding is carried out for production, and the special tin soldering material is prepared. According to the mixed powder