Riser Tube( Stalk Tube)---For low pressure die casting of cylinder heads and wheels.

Reaction bonded silicon nitride (RBSN) is made by direct nitridation of a compacted silicon powder.  The nitridation produces only a small volume change, which means that RBSN components do not need to be machined after fabrication and complex near net shapes can be produced in a single process stage.

Application:

Silicon nitride stalk is widely used in the molten aluminum foundry, melting and holding furnace,etc.

Handling Precautions:

Avoid severe mechanical impact.

Avoid rapid cooling over a wide temperature range

Assemble and install only in moisture free conditions.

Preheating in the air before application by temperature of 300 and 500 centi-degree.

Periodic Maintenance:

Remove slag deposits before solidification from stalk tube surface weekly.

Improper installation of seals may cause failure due to mechanical 

stress.