Copper zinc silicon base powdery brazing material containing alterant and preparation method thereof
A modificator, silicon-based technology, applied in the field of powder metallurgy, can solve problems such as improper smelting atomization process, unstable powder quality, poor composition design, etc. The effect of crystallization
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[0045] Example 1
[0046] The chemical composition of copper-zinc-silicon-based powder brazing material containing trace modifier is designed as: zinc 30 wt %, silicon 4 wt %, tin 1 wt %, Indium 0.5 wt %, lanthanum cerium composite metal 1 wt %, nickel 0.2 wt %, manganese 0.8 wt %, iron 1 wt %, the balance of copper and inevitable impurity elements.
[0047] Taking the preparation of 100 parts of copper-zinc-silicon-based powder brazing material as an example, firstly, 9 parts of copper and 1 part of silicon are mixed and smelted into copper-silicon master alloy, and 7 parts of copper and 3 parts of nickel are mixed and smelted into copper-nickel master alloy. ; Roll the iron sheet into a foil strip with a thickness of 0.2 mm and a width of 5 mm, and roll 0.5 parts of metal indium and 1 part of lanthanum-cerium composite metal into the foil strip and compact it. Then, the remaining copper, copper-silicon master alloy, and copper-nickel master alloy were melted and s...
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[0051] Example 2
[0052] The chemical composition of copper-zinc-silicon-based powder brazing material containing trace modifier is designed as: zinc 28 wt %, silicon 5 wt %, tin 2 wt %, Indium 0.8 wt %, lanthanum cerium composite metal 1 wt %, nickel 1 wt %, manganese 1 wt %, iron 1 wt %, the balance of copper and inevitable impurity elements.
[0053] Taking the preparation of 100 parts of silicon brass pre-alloy powder as an example, firstly, 9 parts of copper and 1 part of silicon are mixed and smelted into a copper-silicon master alloy, 7 parts of copper and 3 parts of nickel are mixed and smelted into a copper-nickel master alloy; The sheet was rolled into a foil strip with a thickness of 0.2 mm and a width of 5 mm, and 0.8 parts of metal indium and 1 part of lanthanum-cerium composite metal were rolled into the foil strip and compacted. Then, the remaining copper, copper-silicon master alloy and copper-nickel master alloy were melted and smelted in an intermed...
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[0057] Example 3
[0058] The chemical composition of copper-zinc-silicon-based powder brazing material containing trace modifier is designed as: zinc 30 wt %, silicon 6 wt %, tin 1 wt %, Indium 2 wt %, lanthanum cerium composite metal 0.5 wt %, nickel 1 wt %, manganese 1 wt %, iron 1 wt %, the balance of copper and inevitable impurity elements.
[0059] Taking the preparation of 100 parts of silicon brass pre-alloy powder as an example, firstly, 9 parts of copper and 1 part of silicon are mixed and smelted into a copper-silicon master alloy, 7 parts of copper and 3 parts of nickel are mixed and smelted into a copper-nickel master alloy; The sheet is rolled into a foil strip with a thickness of 0.2 mm and a width of 5 mm, and 2 parts of metal indium and 0.5 part of lanthanum-cerium composite metal are rolled into the foil strip and compacted. Then, the remaining copper, copper-silicon master alloy and copper-nickel master alloy were melted and smelted in an intermediat...
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