Heat hardening mode and time for coated sand casting technique

During the heat hardening processing, professional China bucket tooth pin production supplier said the coated sand casting would produce settlement phenomenon due to the resin film soften, both of the section surface and quantity for binding bridge would be increased, so the testing sample would become more compactness, and professional China bucket tooth pin production supplier said both of the slowly heat up method or exert pressure are benefit to improve the compactness degree for testing sample.

The heat up speed in the oven is very slowly, but if select the thermal plate heating and add additional heavy block, professional China bucket tooth pin production supplier said the final strength would be higher, besides, because of the non strict control of heat up harden state, which would also influence the correct for final test and check result too.

So professional China bucket tooth pin production supplier would adopts the shot sample manufacturing technique and heat up in core box, and due to the heat up temperature for core box is about two hundred and ten degree, so the suitable total heat up time should never beyond ninety seconds.