mold company china

https://www.jewardmould.com/a-brief-discussion-on-the-essential-factors-of-blow-mould-design-and-manufacturing.html
The materials used for making blow mould must have high thermal conductivity and sufficient strength to withstand the cutting force of the die opening. Currently, aluminum is the advanced alloy used to make most molds. Because of its good machinability, the mold cavity is usually machined by machine cutting. Copper alloy molds also have high heat transfer and good corrosion resistance. However, the cost is high and the price is expensive. Moreover, its density is three times that of aluminum, which may cause severe wear on the molding machine. Steel alloy molds are easy to repair with welding or inlaying method. The thermal conductivity of cast aluminum molds is worse than that of cutting aluminum molds. The die opening of the mold cavity usually needs to be inlaid with copper alloy or stainless steel because the strength and hardness of cast aluminum cannot meet the requirements of the cutting force of the die opening.