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Cold box resin

Cold box resin

Information details


【Product Introduction】

High temperature strength

It can reduce defects and improve the yield of castings.

High moisture resistance

Adapt to high humidity environment and extend the storage period of cores.

Low free formaldehyde

Improve the working environment and environmental protection.

Low viscosity

The sand core has good fluidity and the core shot is more dense.

Can be used for a long time

Suitable for long-term storage of core sand in summer.

Fast curing

Improve core-making efficiency and reduce triethylamine consumption.

【Common specifications and models】


Component I (phenolic resin)

Component Ⅱ (Polyisocyanate)


CT01, CT02, CG01



Light yellow to brown liquid

Brown liquid

Density (200C)g/cm3



Viscosity (200C)mPa.s







Sand mixing process

       The ratio of the two components can be adjusted in the range of 55/45 to 50/50, generally 50:50. If the I component is more, the initial strength of the resin sand will be high. The total amount of resin added is generally 1.0-2.0% (accounting for sand weight ). The intermittent sand mixer first mixes the sand with component I for 1 minute, then adds component II and mixes for 2 minutes. After mixing, the sand is produced and the core is made.

Selection of process parameters

       This series of products adopt the triethylamine hardening method to make the core. The triethylamine is mixed with the carrier gas and blown into the core box at a pressure of 0.2MPa. The blowing time depends on the size and geometric shape of the sand core. It takes about 7 kg of carrier gas to transport 1 kg of triethylamine, and about 0.45-0.8 kg of triethylamine to harden 1 ton of core sand.

【Packaging and storage】

The net weight is 230/240 kg iron drum sealed and packed or the net weight is 1000 kg IBC ton drum sealed packing.

Resin should be stored in a room at 10-30℃, well ventilated, avoiding water, fire, heat source and direct sunlight, so as to avoid resin failure, especially for component II resin, the storage period is half a year if the above conditions are met.

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