Copper-yttrium alloy for pressure casting and processing technology of copper-yttrium alloy
A technology of alloys and processing steps, which is applied in the field of alloys, can solve problems such as not being able to meet the requirements, achieve the effects of low liquid-solid phase solidification temperature range, solve the problem of high tendency of thermal cracking, and reduce the amount of use
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Embodiment 1
[0019] A copper-yttrium alloy for die-casting with 1240-degree melting. In terms of weight percentage, the chemical composition of the alloy is: Y: 0.5wt.%, Sr: 2.1wt.%, Ba: 0.7wt.%, Ga: 0.1wt.%, In: 0.6wt.%, Yb: 0.1wt .%, Th: 0.4wt.%, B: 0.1wt.%, the balance is copper. 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 1240 degrees to form an alloy solution, and use the electromagnetic effect to fully stir for about 10 minutes. The alloy liquid is kept at 1240 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 10m / min. The ingot can be used as a casting raw material for pressure casting in subsequent processes to prepare complex-shaped copper alloy castings; the final heat treatment process of these castings is: vacuum solution treatment at 640 degre...
Embodiment 2
[0021]A copper-yttrium alloy for die-casting with 1250-degree melting. In terms of weight percentage, the chemical composition of the alloy is: Y: 0.3wt.%, Sr: 1.8wt.%, Ba: 0.7wt.%, Ga: 0.1wt.%, In: 0.6wt.%, Yb: 0.1wt .%, Th: 0.4wt.%, B: 0.1wt.%, the balance is copper. 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 1250 degrees to form an alloy solution, and use the electromagnetic effect to fully stir for about 10 minutes. The alloy liquid is kept at 1250 degrees for 10 minutes and cast into the equipment at the same level as the hot top for semi-continuous casting, and the ingot moving speed is 12m / min. The ingot can be used as a casting raw material for pressure casting in subsequent processes to prepare complex-shaped copper alloy castings; the final heat treatment process of these castings is: vacuum solution treatment at 640...
Embodiment 3
[0023] A copper-yttrium alloy for die-casting with 1270-degree melting. In terms of weight percentage, the chemical composition of the alloy is: Y: 0.5wt.%, Sr: 1.6wt.%, Ba: 0.7wt.%, Ga: 0.2wt.%, In: 0.6wt.%, Yb: 0.1wt .%, Th: 0.4wt.%, B: 0.1wt.%, the balance is copper. 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 1270 degrees to form an alloy solution, and use the electromagnetic effect to fully stir for about 10 minutes. The alloy liquid is kept at 1270 degrees for 10 minutes and cast into the equipment at the same level as the hot top for semi-continuous casting, and the ingot moving speed is 13m / min. The ingot can be used as a casting raw material for pressure casting in subsequent processes to prepare complex-shaped copper alloy castings; the final heat treatment process of these castings is: vacuum solution treatment at 64...
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