Magnesium Alloy Die casting Machine
HPDC(High Pressure Die Casting) Machinery and Equipment
In the forming technology of magnesium alloy, most of them are formed by die-casting method. So die-casting equipment is of great significance to the magnesium alloy industry. Due to the lag of the domestic magnesium alloy die-casting industry. Many companies still use ordinary die-casting machines to engage in magnesium alloy die-casting.
Not only are there problems with the quality of the produced die-casting parts. But it is also very easy to induce accidents.
Magnesium alloy hot chamber die casting machine
The magnesium alloy enters the cavity of the die-casting mold (mold) directly from the liquid level through the closed gooseneck nozzle, etc..
There is no oxidation and scum during the pouring process, and the temperature loss is small. So the hot chamber die-casting machine is more suitable for thin-walled complex Die casting of parts.(minimum wall thickness can reach 0.5mm).
And because of its high productivity, easy automation, and easy protection of magnesium alloy liquid. It is widely used in the production of household appliances, computers, communications, daily hardware. And many magnesium die-casting parts that are not particularly loaded. Generally, small and medium-sized magnesium alloy die-casting parts. Especially parts with thin walls and high appearance requirements, are mostly produced by hot-chamber die-casting machines.
The difference between the magnesium alloy hot chamber die casting machine and the ordinary hot chamber die casting machine is that the former has a higher injection speed. Generally, the air injection speed is required to be greater than 6m/s. And the hydraulic shock at the end of the injection is required to be small. The working temperature is high, and the temperature control is strict. So the heat preservation crucible furnace should consider the alloy liquid oxidation protection.
Magnesium alloy horizontal cold chamber die casting machine
Requirements for a magnesium alloy horizontal cold chamber die casting machine:
Most of the magnesium alloy die castings with large forces and special requirements are produced by cold chamber die casting machines, such as many important auto parts.
However, ordinary cold chamber die-casting machines must make the following improvements to the injection part to meet the needs of magnesium alloy die-casting production:
1) The fast injection speed is increased from 4～5m/s to 6～10m/s.
2) Reduce pressure build-up time.
3) Improve the control degree of injection speed and injection force.
4) Special furnace equipped with protective gas device.
