Brazing method and solder preparation method for high-volume-fraction SiCp/Al composite
A high volume fraction, composite material technology, applied in the direction of welding/cutting media/materials, welding equipment, welding media, etc., can solve the problems of poor wettability, low air tightness, low strength of brazed joints, etc., and achieve joint strength High, well-integrated interface, tight connection effect
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[0023] Example 1
[0024] A method for preparing brazing filler metal of high volume fraction SiCp / Al composite material includes the following steps:
[0025] The first step is to mix materials: mix the raw materials pure Al, pure Cu, Al-20Si, Al-50Mg according to the mass ratio of 26.7% Cu, 5.25% Si, 1.5% Mg and the balance Al, and then mix the pure Al, The Cu element and Al-20Si master alloy are placed in the graphite crucible of the high vacuum induction melting furnace, and the Al-50Mg master alloy is placed in the stainless steel mold, and the stainless steel mold is vacuumed to 1×10 -3 Pa~3×10 -3 Pa, then filled with high-purity argon until the pressure in the stainless steel mold is 0MPa;
[0026] The second step is to prepare the solder blank: turn on the induction heating power supply, preheat the graphite crucible to 300°C to 400°C, and then heat the graphite crucible to 1500°C to 1600°C within 10 minutes to melt the metal raw materials in the graphite crucible completely ...
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[0035] Example 2
[0036] A method for preparing brazing filler metal of high volume fraction SiCp / Al composite material includes the following steps:
[0037] The first step is to mix the materials: according to the mass ratio of 20.0% Cu, 6.0% Si, 1.5% Mg and the balance Al, the raw materials are proportioned with pure Al, pure Cu, Al-20Si, and Al-50Mg, and then the pure Al, Cu element and Al-20Si master alloy are placed in a graphite crucible of a high vacuum induction melting furnace, and Al-50Mg master alloy is placed in a stainless steel mold, and the stainless steel mold is vacuumed to 1×10 -3 Pa~3×10 -3 Pa, then filled with high-purity argon until the pressure in the stainless steel mold is 0MPa;
[0038] The second step is to prepare the solder blank: turn on the induction heating power supply, preheat the graphite crucible to 300°C to 400°C, and then heat the graphite crucible to 1500°C to 1600°C within 10 minutes to melt the metal raw materials in the graphite crucible com...
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[0047] Example 3
[0048] A method for preparing brazing filler metal of high volume fraction SiCp / Al composite material includes the following steps:
[0049] The first step, mixing: according to the mass ratio of 28% Cu, 6% Si, 2% Mg and the balance of Al, the raw materials pure Al, pure Cu, Al-20Si, Al-50Mg are mixed, and then the pure Al, Cu element and Al-20Si master alloy are placed in a graphite crucible of a high vacuum induction melting furnace, and Al-50Mg master alloy is placed in a stainless steel mold, and the stainless steel mold is vacuumed to 1×10 -3 Pa~3×10 -3 Pa, then filled with high-purity argon until the pressure in the stainless steel mold is 0MPa;
[0050] The second step is to prepare the solder blank, turn on the induction heating power supply, preheat the graphite crucible to 300°C to 400°C, and then heat the graphite crucible to 1500°C to 1600°C within 10 minutes to melt the metal raw materials in the graphite crucible completely , And keep the temperature...
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