C-Block is the new Beryllium Copper die casting chill-vent from NGK Insulators. C-Block provides solutions to the following die casting problems:

• Reduces gas hole defects due to poor gas flow.
• Eliminates the possibility of aluminium eruption from dies.
• Eliminates Aluminium/vent reactions.
• Prevents the need for external air ventilation equipment.
• Simplifies ventilation control in vacuum systems.

A comparison shows the difference between castings using a steel chill-vent in the left of the photograph, and the NGK C-Block chill-vent on the right.

C-Block meets die casting needs through the following:

Chill-Vent
C-Block is superior in both chilling rate and ventilation capacity.

Copper Alloy
C-Block utilises Beryllium Copper which has 6 times the cooling rate of steel.

Compact
C-block simplifies die design to reduce mould size and
release die space limits.

Combination
C-block is available in various combinations and configurations
for both standard and vacuum die casting machines.

Cost Performance
C-Block drastically reduces total production costs which consist
of die casting rejection loss and initial die costs.

The following are specifications for C-Block and the optional guide frame made from tool steel.

Mould Material Comparison

Kim Ann is able to meet your needs for quick delivery of C-block vents, and for technical assistance in the design and making of both C-blocks and custom-made chill-vents from NGK.