What materials are plastic injection molds generally made of?

What materials are plastic injection molds generally made of?The manufacturing materials of plastic injection molds depend on production needs, mainly considering the following four factors.

What materials are plastic injection molds generally made of?

1. The manufacturing materials of plastic injection molds depend on production needs, mainly considering the following four factors:

(1) Material strength: The mold needs to withstand the pressure and wear during high-pressure injection molding, so the manufacturing material must have sufficient strength to ensure life.

(2) Heat resistance: Plastic becomes liquid after heating and needs to be injected at high temperature. Therefore, the mold material must be able to withstand high temperatures.

(3) Thermal conductivity: Since plastic injection molding is a fast process, the mold needs to have good thermal conductivity to ensure uniform injection.

(4) Corrosion resistance: Chemical substances are used in the plastic injection molding process, so the material must have sufficient corrosion resistance.

2. What are the common types of injection mold materials? They mainly include the following four types:

(1) Aluminum alloy: Aluminum alloy molds have low cost and short manufacturing cycle, and are suitable for small-scale production.

(2) H13 steel: This steel has high hardness, good toughness, and strong heat resistance, and is suitable for large-scale production.

(3) Stainless steel: Stainless steel molds have high corrosion resistance and high hardness, and are suitable for plastic injection molding production.

(4) Copper alloy: Copper alloy molds have good thermal conductivity and are suitable for processes with higher injection temperatures.

In short, the manufacturing materials of plastic injection molds need to be selected according to actual conditions to meet production requirements and cost-effectiveness.