The high density, high strength and high thermal shock resistance of silicon carbide ceramics determine that it is the best choice for sealing tubes in low pressure die casting.

Compared with aluminum titanate and alumina ceramics, silicon nitride has better wear resistance and can ensure the tightness of the sealing tube for a long time;

The high temperature strength of silicon nitride ceramics ensures that the sealing tube can still be used for a long time under frequent operating conditions.

In view of the brittleness of silicon nitride ceramics, it is necessary to avoid large mechanical shocks, so attention should be paid to the design and installation of the lifting gear.

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