Problems needing attention in production of zinc alloy bearing blocks

1. Controlling the composition of zinc alloy bearing blocks begins with the purchase of alloy ingots, which must be based on ultra-high purity zinc and made with ultra-high purity aluminum, magnesium, and copper. The supplier has strict composition standards. Excellent zinc based alloy materials are the guarantee for producing excellent castings.

"When purchasing alloy ingots, it is necessary to ensure that there is a clean and dry stacking area to avoid white rust caused by prolonged exposure to moisture, or increased slag generation and metal loss due to contamination by factory dirt.". A clean factory environment is important for effective control of alloy composition.

3. The ratio of new material to water inlet and other return materials shall not exceed 50%. Generally, new material: old material=70:30. In continuous remelting alloys, aluminum and magnesium gradually decrease.

When remelting the nozzle material, it is necessary to strictly control the remelting temperature not to exceed 430 ℃ to avoid loss of aluminum and magnesium.

5. Conditional die casting plants use a centralized melting furnace to melt zinc based alloys, making the alloy ingots evenly proportioned with the returning material. The flux can be used more effectively, keeping the alloy composition and temperature uniform and stable. Electroplating waste and fines should be separately melted in a furnace.