Palladium magnesium alloy for magnesium-contained highly-conductive high strength electric contact material
An electrical contact material and high electrical conductivity technology, applied in the field of alloys, can solve the problems that the anti-combustion performance cannot meet the requirements, etc., and achieve the effect of solving the problem of large hot cracking tendency, good plasticity and viscosity, and low liquid-solid solidification temperature range.
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Embodiment 1
[0017] A Pd-Mg-Hf palladium-magnesium alloy for 1600-degree smelting magnesium-containing high-conductivity and high-strength electrical contact materials. In terms of weight percentage, the chemical composition of the alloy is: Mg:1.9wt.%, Hf:0.6wt.%, Re:0.8wt.%, Sn:1.3wt.%, Al:1.2wt.%, Co:0.4wt .%, Ag: 0.6wt.%, Si: 0.3wt.%, Ge: 0.1wt.%, B: 0.3wt.%, and the balance is palladium. The preparation method of the alloy: add the above-mentioned raw materials into the induction furnace under the atmospheric environment, and use a silicon carbide crucible. Induction heating to 1600 degrees to form an alloy solution, and use the electromagnetic effect to fully stir for about 10 minutes. The alloy liquid is kept at 1600 degrees for 10 minutes and cast into the same level equipment as the hot top for semi-continuous casting, and the ingot moving speed is 8m / min. The ingot was deformed at room temperature with a rolling reduction of 9% per pass. Every 3 passes of rolling requires an i...
Embodiment 2
[0019]A Pd-Mg-Hf palladium-magnesium alloy for smelting magnesium-containing high-conductivity and high-strength electrical contact materials at 1620 degrees. By weight percentage, the chemical composition of the alloy is: Mg: 2.5wt.%, Hf: 0.4wt.%, Re: 0.8wt.%, Sn: 1.2wt.%, Al: 1.2wt.%, Co: 0.4wt% .%, Ag: 0.6wt.%, Si: 0.2wt.%, Ge: 0.1wt.%, B: 0.3wt.%, and the balance is palladium. The preparation method of the alloy: the above-mentioned raw materials are added into an induction furnace in an atmospheric environment, and a silicon carbide crucible is used. Induction heating to 1620 degrees to form an alloy solution, and fully stirring for about 10 minutes using the electromagnetic effect. The alloy liquid was kept at 1620 degrees for 10 minutes and poured into the hot top level equipment for semi-continuous casting, and the moving speed of the ingot was 10m / min. The ingot is deformed at room temperature, and the rolling reduction per pass is 6%. Every 3 passes of rolling req...
Embodiment 3
[0021] A Pd-Mg-Hf palladium-magnesium alloy for smelting magnesium-containing high-conductivity and high-strength electrical contact materials at 1650 degrees. By weight percentage, the chemical composition of the alloy is: Mg: 2.6wt.%, Hf: 0.5wt.%, Re: 1.2wt.%, Sn: 1.3wt.%, Al: 1.2wt.%, Co: 0.4wt% .%, Ag: 0.6wt.%, Si: 0.2wt.%, Ge: 0.1wt.%, B: 0.2wt.%, and the balance is palladium. The preparation method of the alloy: the above-mentioned raw materials are added into an induction furnace in an atmospheric environment, and a silicon carbide crucible is used. Induction heating to 1650 degrees to form an alloy solution, and fully stirring for about 10 minutes by electromagnetic effect. The alloy liquid was kept at 1650 degrees for 10 minutes and poured into the hot top level equipment for semi-continuous casting, and the moving speed of the ingot was 9m / min. The ingot is deformed at room temperature, and the rolling reduction per pass is 10%. Every 3 passes of rolling requires ...
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