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High electrical conductivity high-temperature resistance Ca and Re containing copper alloy for pressure casting

A technology of high temperature resistance and copper alloy, which is applied in the field of alloys, can solve the problems of damage to the mechanical properties of alloys, flux inclusions, increased costs, etc., and achieve the effects of excellent mechanical properties and excellent flame retardancy

Inactive Publication Date: 2018-09-21
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these two methods have defects, such as easy to produce toxic gas to pollute the environment and cause flux inclusions to damage the mechanical properties of the alloy
In addition, the smelting and pouring equipment and processes are complicated, which increases the cost, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A high-conductivity and high-temperature-resistant copper alloy containing Ca and Re for melting and die-casting at 1120 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca: 1.8wt.%, Re: 0.9wt.%; Mn: 1.6wt.%, Ge: 4.2wt.%, In: 3.5wt.%, Nb: 0.6wt .%, the balance is copper. The preparation method of the alloy: add the above-mentioned raw materials into the atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heat to 1120 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; put the alloy liquid in After standing at 1120°C for 10 minutes, it is cast into the equipment at the same level as the hot top for semi-continuous casting into the required square and round ingots, and the ingot moves down at a speed of 5m / min. The ingot can be used as casting raw material for pressure casting in the subsequent process to prepare complex-shaped copper-calcium ...

Embodiment 2

[0021]A high-conductivity and high-temperature-resistant copper alloy containing Ca and Re for melting and die-casting at 1140 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca: 2.3wt.%, Re: 0.9wt.%; Mn: 2.1wt.%, Ge: 4.8wt.%, In: 3.2wt.%, Nb: 0.6wt .%, the balance is copper. The preparation method of the alloy: add the above-mentioned raw materials into the atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heat to 1140 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; put the alloy liquid in After standing at 1140°C for 10 minutes, it is cast into the equipment at the same level as the hot top for semi-continuous casting into the required square and round ingots. The ingot moves down at a speed of 5m / min. The ingot can be used as casting raw material for pressure casting in the subsequent process to prepare complex-shaped copper-calcium alloy...

Embodiment 3

[0024] A high-conductivity and high-temperature-resistant copper alloy containing Ca and Re for melting and die-casting at 1180 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca: 2.1wt.%, Re: 0.9wt.%; Mn: 1.4wt.%, Ge: 4.8wt.%, In: 3.2wt.%, Nb: 0.6wt .%, the balance is copper. The preparation method of the alloy: add the above-mentioned raw materials into the atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heat to 1180 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; put the alloy liquid in After standing at 1180°C for 10 minutes, it is cast into the equipment at the same level as the hot top for semi-continuous casting into the required square and round ingots. The ingot moves down at a speed of 6m / min. The ingot can be used as casting raw material for pressure casting in the subsequent process to prepare complex-shaped copper-calcium allo...

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Abstract

The invention discloses a high electrical conductivity high-temperature resistance Ca and Re containing copper alloy for pressure casting, and a processing technology thereof. The high electrical conductivity high temperature resistance Ca and Re containing copper alloy comprises 1.2-2.5 wt.% of Ca, 0.8-1.2 wt.% of Re, 1.0-2.5 wt.% of Mn, 4.0-6.0 wt.% of Ge, 3.0-4.0 wt.% of In, 0.5-0.8 wt.% of Nband the balance copper. The copper calcium alloy has excellent pressure casting performance and excellent high temperature resistance performance. The high electrical conductivity high-temperature resistance Ca and Re containing copper alloy for pressure casting is obtained by innovating and optimizing the underlying properties of the traditional copper alloy for casting and has positive significance for the development and improvement of copper alloy pressure casting technologies, even the whole pressure casting industries and technologies thereof.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a copper-calcium alloy. Background technique [0002] Copper is one of the earliest metals discovered by humans. Copper alloys are formed by adding alloying elements to copper. Copper alloys have many characteristics. 1). Has excellent physical and chemical properties. Pure copper has excellent electrical conductivity and thermal conductivity, and many copper alloys also have good electrical and thermal conductivity; copper and copper alloys are also highly resistant to atmospheric and water corrosion; copper is a diamagnetic substance. 2). Has good processing performance. Copper and some copper alloys have good plasticity and are easy to be cold and hot formed; cast copper alloys have good casting properties. 3). There are certain special mechanical properties. For example, excellent anti-friction and wear resistance (such as bronze and some brass); high elastic limit and...

Claims

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Application Information

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