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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

Inactive Publication Date: 2018-05-08
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a structural material, it is far from meeting the requirements to only have flame retardancy during smelting and prevent yttrium and barium from volatilizing during smelting. More importantly, the final copper alloy containing yttrium and barium must also have Satisfactory mechanical strength, at least at the level of mechanical properties of commonly used copper alloys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a copper-yttrium alloy for pressure casting and a processing technology of the copper-yttrium alloy. Chemical components of the alloy comprise, by weight percent, 0.2%-0.6% ofY, 1.2%-2.5% of Sr, 0.6%-0.8% of Ba, 0.1%-0.2% of Ga, 0.5%-0.8% of In, 0.1%-0.2wt% of Yb, 0.4%-0.5% of Th, 0.1%-0.2% of B and the balance copper. Relative to a traditional copper alloy, the material has excellent casting performance and heat conduction performance.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a copper alloy. Background technique [0002] Copper and copper alloys have been widely used in various sectors of the national economy due to their excellent properties: high electrical and thermal conductivity, strong corrosion resistance, good processing and forming properties, and moderate strength, and have become second only to copper in various sectors of the national economy. The third largest metal of steel and aluminum. Compared with other metals, the main characteristics of copper and copper alloys are good electrical and thermal conductivity, good corrosion resistance in the atmosphere, sea water and many media, and high strength, corrosion resistance and excellent plasticity. Various plastic processing and casting methods are used to produce various products, which are easy to be press-processed into various semi-finished products and parts such as wires, rods, plate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/02C22F1/08C22F1/02
CPCC22C9/00C22C1/02C22F1/02C22F1/08
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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