Type of coated sand
(1) ordinary type of coated sand
Composed of quartz sand, novolak resin, urotropine and calcium stearate, without the additives. Applicable to the production of general cast iron parts.
(2) high strength and low gas coated sand
Is the ordinary of precoated sand replacement products, by the addition of additives and the new process is prepared, its strength more than 30% higher than in ordinary coated sand, volume is greatly reduced, and the suitable for production of complex precision cast iron.
(3) high temperature coated sand
At high temperatures has characteristics of high strength, heat resistance for a long time, applicable to the production of automotive engine cylinder block, cylinder head, container angle complex thin wall castings.
(4) class easy collapsibility of coated sand
Has better strength and excellent low temperature collapsibility, suitable for the production of non-ferrous metal castings.
(5) other special requirements for coated sand
In order to meet the needs of different products, developed a series of precoated sand such as centrifugal casting precoated sand, chilled precoated sand, wet state of precoated sand, anti sticking sand, anti veining, orange peel coated sand prevention etc..