knowledge about aluminum extrusion die

The working conditions of extrusion dies in the production of profile extrusion are very harsh, and they need to withstand severe friction and wear under high temperature and high pressure, and also need to withstand periodic loads. This requires the mold to have high thermal stability, thermal fatigue, thermal wear resistance and sufficient toughness. In order to meet the above requirements, high-quality 4Cr5MoSiV1 (American grade H13) alloy steel is widely used in China, and vacuum heat treatment and quenching are used to make molds to meet the requirements of aluminum profile production.

Problems that may occur with the long-term use of aluminum extrusion dies:

1. There are seam angles or poor welding

2. The wall of the aluminum alloy profile appears concave or convex bow-shaped surface

3. The surface of aluminum profile has line strip

4. Aluminum alloy profile bending and twisting

How to maintain the aluminum extrusion die

1. Select the appropriate extrusion machine for production

2. Reasonable selection of ingot blank and heating temperature

3. Optimize the extrusion process

4. Nitriding processing is necessary before using the extrusion die

5. The use of mold adopts the use of low to high to low strength

6. Use the correct alkali washing (cooking mold) method

7. The working belt before the mold is machined must be ground and polished

8. The mold holding time during extrusion production is generally about 2-3 hours, but it cannot exceed 8 hours