Zinc alloy die-casting is a precision casting method that uses high pressure to force molten metal into a complex shaped metal mold. It is a precise casting method. Regarding its melting point, it is important to pay special attention to it. So, what problems can occur when the melting point of zinc alloy die-casting is high? Below is a brief introduction to its related knowledge points.
1. Zinc alloy die-casting has a high melting point, which can damage the composition of zinc alloy die-casting parts. When magnesium and aluminum in zinc alloy are lost due to temperature issues, the composition of the alloy will change, thereby affecting the quality of the product and greatly increasing the scrap rate.
2. The melting point of zinc alloy die-casting is high, and the energy consumption cost will also increase. Generally, the set temperature for zinc alloy die-casting in the production process is 410 ℃, and poor zinc alloys may need to be set above 430 ℃. The temperature of the zinc alloy die-casting machine in general zinc alloy die-casting manufacturers increases by 10 ℃, and the annual electricity cost will increase by 5000 yuan. If diesel is used, the cost will increase by about 8000 yuan.
3. Zinc alloy die-casting has a high melting point, which reduces the service life of hot work parts. When the temperature of the crucible is too high, it will accelerate the wear and corrosion of the hammer handle, goose neck, crucible, etc., which will cause many production problems, and some may directly scrap the equipment, greatly increasing the cost.
4. The increase in melting point of zinc alloy material causes significant damage to the mold, reducing its service life and increasing production costs.
5. Zinc alloy die-casting has a high melting point, which increases the production of zinc slag and significantly increases the cost of effective alloys.