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Novel die-casting Ca-Co-Rh aluminum alloy with high conduction characteristics

A high-conductivity, aluminum alloy technology, applied in the field of alloys, can solve the problems of damaging the mechanical properties of the alloy, polluting the environment with toxic gases, increasing costs, etc., to achieve the effect of improving the yield of die casting, excellent mechanical properties, and increasing production costs.

Inactive Publication Date: 2018-08-10
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

[0017] A new Ca-Co-Rh aluminum alloy for die-casting with high electrical conductivity when smelted at 750 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca: 0.9wt.%, Co: 3.2wt.%; Rh: 1.4wt.%, Hf: 0.6wt.%, Ge: 2.5wt.%, Be: 0.6wt .%, the balance is aluminum. 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 750 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 750°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 aluminum-calcium alloy castings with complex shapes; th...

Embodiment 2

[0020] A new Ca-Co-Rh aluminum alloy for die-casting with high electrical conductivity when smelted at 770 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca: 0.9wt.%, Co: 3.2wt.%; Rh: 1.2wt.%, Hf: 0.6wt.%, Ge: 2.8wt.%, Be: 0.6wt.% .%, the balance is aluminum. 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 770 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 770°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 8m / min. The ingot can be used as casting raw material for pressure casting in the subsequent process to prepare aluminum-calcium alloy castings with complex shapes; ...

Embodiment 3

[0023] A new Ca-Co-Rh aluminum alloy for die-casting with high electrical conductivity when smelted at 790 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca: 1.0wt.%, Co: 3.6wt.%; Rh: 1.2wt.%, Hf: 0.6wt.%, Ge: 3.5wt.%, Be: 0.8wt.% .%, the balance is aluminum. 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 790 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 790°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 8m / min. The ingot can be used as casting raw material for pressure casting in the subsequent process to prepare aluminum-calcium alloy castings with complex shapes; ...

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Abstract

The invention discloses a novel die-casting Ca-Co-Rh aluminum alloy with high conduction characteristics and a machining process of the novel Ca-Co-Rh aluminum alloy. The alloy comprises, by weight,0.8-1.2wt.% of Ca, 3.0-4.0wt.% of Co, 1.0-1.5wt.% of Rh, 0.5-0.8wt.% of Hf, 2.0-4.0wt.% of Ge, 0.5-1.2wt.% of Be and the balance aluminum. The novel die-casting Ca-Co-Rh aluminum alloy has excellent die-casting performance and excellent conductive performance; and developing the high-quality die-casting aluminum alloy has the promotion effects on improving China's autonomous research and development of competitive products and new materials and on occupying the international competitive product and new material market.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to an aluminum-calcium alloy. Background technique [0002] The density of pure aluminum is small, about 1 / 3 of that of iron. Aluminum has a face-centered cubic structure, so it has high plasticity and is easy to process. It can be made into various profiles and plates, and has good corrosion resistance. Through long-term production practice and scientific experiments, people have gradually strengthened aluminum by adding alloying elements and using heat treatment, which resulted in a series of aluminum alloys. [0003] Aluminum alloys have been used in aerospace since the 20th century. Because aluminum alloy can greatly improve the aerodynamic performance of the aircraft and can significantly reduce its structural weight, many parts are made of it. At present, the application fields of aluminum alloy in aviation include various civil and military aircraft civil engine parts, prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/02C22F1/04C22F1/02
CPCC22C21/00C22C1/026C22F1/02C22F1/04
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD