High-thermal-conductivity Ge-containing magnesium alloy suitable for cold chamber die casting and processing technology thereof

A cold chamber die-casting, high thermal conductivity technology, applied in the field of alloys, can solve the problems of complex smelting and pouring equipment and processes, toxic gas pollution of the environment, damage to alloy properties, etc., to achieve excellent filling performance, excellent flame retardancy, shrinkage cavity Formation tends to have little effect

Inactive Publication Date: 2018-07-06
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 their unavoidable defects, such as easy to produce toxic gas to pollute the environment and cause flux inclu...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A Ge-containing magnesium alloy with high thermal conductivity suitable for cold chamber die-casting smelted at 750 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca: 0.8wt.%, Ge: 2.6wt.%; Mn: 1.5wt.%, Ni: 2.9wt.%, Y: 0.8wt.%, Nb: 0.4wt .%, and the balance is magnesium. 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 12m / min. The ingot can be used as casting raw material for pressure casting in the subsequent process to prepare magnesium-calcium alloy castings w...

Embodiment 2

[0020]A Ge-containing magnesium alloy with high thermal conductivity suitable for cold chamber die-casting smelted at 770 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca: 0.9wt.%, Ge: 3.1wt.%; Mn: 1.8wt.%, Ni: 2.6wt.%, Y: 0.8wt.%, Nb: 0.4wt .%, and the balance is magnesium. 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 12m / min. The ingot can be used as casting raw material for pressure casting in the subsequent process to prepare magnesium-calcium alloy castings wi...

Embodiment 3

[0023] A Ge-containing magnesium alloy with high thermal conductivity suitable for cold chamber die-casting smelted at 790 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca: 1.0wt.%, Ge: 3.2wt.%; Mn: 1.8wt.%, Ni: 2.6wt.%, Y: 0.9wt.%, Nb: 0.5wt .%, and the balance is magnesium. 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, with the ingot moving down at a speed of 14m / min. The ingot can be used as casting raw material for pressure casting in the subsequent process to prepare magnesium-calcium alloy cast...

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Abstract

The invention discloses high-thermal-conductivity Ge-containing magnesium alloy suitable for cold chamber die casting and a processing technology thereof. The alloy is prepared from the following components in percentage by weight: 0.5-1.2wt.% of Ca, 2.4-3.5wt.% of Ge, 1.0-2.5wt.% of Mn, 2.4-3.8wt.% of Ni, 0.5-1.2wt.% of Y, 0.2-0.6wt.% of Nb and the balance of magnesium. The magnesium-calcium alloy has excellent die casting properties and excellent thermal conductivity and is expected to have a promotion effect of enabling fine new materials independently researched and developed in China to occupy the market of international fine new materials.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a magnesium-calcium alloy. Background technique [0002] Magnesium alloy is an alloy composed of magnesium and other elements. It is the lightest metal structure material used in aircraft, spacecraft and rocket missile manufacturing industries. Magnesium is lighter in weight and lower in strength than aluminum, and is mainly used in the manufacture of low-load parts. Magnesium alloy has high anti-vibration ability, can absorb large energy when subjected to impact load, and has good heat absorption performance, so it is an ideal material for manufacturing aircraft hubs. Magnesium alloy is very stable in gasoline, kerosene and lubricating oil, suitable for manufacturing engine gear casings, oil pumps and oil pipes, and is used to manufacture rocker arms, flaps, Moving parts such as doors and rudder surfaces. Magnesium alloy products are widely used in civil aircraft and military ...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C1/02C22F1/06C22F1/02
CPCC22C23/00C22C1/02C22F1/02C22F1/06
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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