Glass mould specialist Changshu Jianhua Mould Technology Co.’s tungsten carbide plunger project was successfully approved and officially put into production in 2020.

Traditionally, the surface of a plunger is spray-clad with nickel-based powder giving it a hardness of about 40HRC and enabling the equipment to be used to press molten glass at a temperature of about 1000°C into a mould.

Coated with tungsten carbide powder, Jianhua Mould’s NNPB plunger has a hardness that can reach more than 60HRC.

The plunger can be used more than 200,000 times in molten glass at around 1100°C.

The tungsten carbide plunger has already obtained authoritative quality confirmation from multiple glass factories.

www.jhmould.com

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