1树脂砂型刚度好，浇注初期砂型强度高这就有条件利用铸铁凝固过程的石墨化膨胀，有效地消除缩孔、缩松缺陷，实现灰铸铁、球墨铸铁件的少冒口、无冒口铸造。

1, the resin sand mold has good rigidity, and the sand mold strength is high at the initial stage of casting. This condition can make use of the graphitization expansion of cast iron solidification process, effectively eliminate shrinkage porosity and shrinkage defects, and achieve less Risering and riser casting of gray cast iron and ductile iron castings.

2实型铸造生产中采用聚苯乙烯泡塑模样应用呋哺树脂自硬砂造型。当金属液浇入铸型时，泡沫塑料模样在高温金属液作用下迅速气化，燃烧而消失，金属液取代了原来泡沫塑料所占据的位置，冷却凝固成与模样形状相同的实型铸件。

Polystyrene foam pattern application of furan resin self hardening sand moulding with 2 cavityless casting production. When the molten metal is poured into the mold, the foam pattern rapidly vaporized and burned away under the action of high temperature molten metal. The metal liquid instead of the original foam plastics occupies the position and cooled to solidify the solid mold with the same shape.

 

3相对来说，消失模铸造对于生产单件或小批量的汽车覆盖件，机床床身等大型模具较之传统砂型有很大优势，它不但省去了昂贵的木型费用，而且便于操作，缩短了生产周期，提高了生产效率，具有尺寸精度高，加工余量小，表面质量好等优势。

3 relatively disappeared for single or small batch production of automotive panel die casting machine bed, etc. compared with the traditional large mould sand have great advantages, it not only eliminates the need for expensive wood, and convenient operation, shorten the production cycle, improve production efficiency, with high precision, small machining allowance. Good surface quality and other advantages.