The Precautions of Zinc Alloy Production
1. Control alloy composition starting from the purchase of alloy ingots. The alloy ingots must be based on ultra-high purity zinc, plus alloy ingots made of ultra-high purity aluminum, magnesium and copper. The supplier has strict ingredient standards. High quality zinc alloy is the guarantee for the production of high quality castings.
2. The purchased alloy ingots should have a clean and dry stacking area to avoid white rust when exposed to moisture for a long time, or be contaminated by factory dirt to increase the generation of slag and increase metal loss. A clean factory environment is very effective in controlling the composition of the alloy.
3. The ratio of new materials to nozzles, such as nozzles, should not exceed 50%, and the new materials: old materials = 70:30. Aluminum and magnesium are gradually reduced in continuous remelting alloys.
4. When the nozzle material is remelted, it is necessary to strictly control the remelting temperature not to exceed 420 °C to avoid the loss of aluminum and magnesium.
5. The conditional die-casting plant preferably uses a concentrated furnace to melt the zinc alloy so that the alloy ingot and the recycled material are evenly proportioned, and the flux can be used more effectively, so that the alloy composition and temperature are kept uniform and stable. Electroplating waste and fines should be separated into separate furnaces.