Advantages of resin sand castings
1, resin sand rigidity is good, pouring early sand strength is high, which is the condition of the use of cast iron solidification process of graphitization expansion, effectively eliminate shrinkage, shrinkage defects, to achieve gray cast iron, ductile iron pieces of less riser, no risk Mouth casting.
2, the real type of casting production using polystyrene foam appearance, the application of taste resin from the hard sand shape. When the molten metal is poured into the mold, the foam is rapidly gasified, burnt and erased under the action of the high-vanity metallic liquid. The molten metal replaces the position occupied by the original blister, cooled and solidified to the same shape as the shape Type castings.
3, relatively speaking, Lost Foam Casting for the production of single or small batch of automotive panels, machine bed and other large mold gown of the traditional sand has a great advantage, it not only eliminates the cost of expensive wood, and easy to operate , Shorten the production cycle, improve the production efficiency, with high dimensional accuracy, processing margin is small, good quality and other advantages of the surface.
Large resin sand castings are used resin sand, disappear mold real casting, a single piece to 40 tons or more, the annual production capacity of about 8500 tons. Including bed, table, column, gantry, connecting beam. Materials are high-quality fine gray cast iron HT200-HT300, precision ratio, higher tensile strength, so that you buy no worries. International popular heat treatment process, so that casting stress and deformation to reduce to the minimum degree. Long-term use more stable.