Foam engraving machine is usually produced by high-precision foam engraving machine. Foam engraving machine (also known as real mold casting) is a new casting process that is formed by bonding the foam model similar to the size and shape of the casting into a model cluster, drying the refractory coating well after being dried, and burying it in dry quartz sand and vibrating it under negative pressure.

a、鑄件精度高

a. High precision casting

鑄件尺寸形狀精確，重復性好，表面光潔度高，具有精密鑄造的特點

The casting has the characteristics of precise size and shape, good repeatability and high surface finish

b、產品質量高

b. High quality products

消失在模鑄造工藝屬精密鑄造技術，鑄造尺寸精度和表面光潔度遠高于砂型鑄造，模型不需分型開邊，鑄件無飛邊毛刺；由于負壓作用補縮能力強，鑄件內部組織致密，澆冒系統處理好可使鑄件無縮孔、縮松。

Lost foam casting is a kind of precision casting technology. Its dimensional accuracy and surface finish are much higher than that of sand mold casting. There is no need to split the mold and open the edge, and there is no flash burr in the casting. Due to the strong feeding ability of negative pressure, the internal structure of the casting is compact, and the casting has no shrinkage cavity and porosity when the pouring system is well treated.

c、工藝過程簡化，容易操作

c. The process is simple and easy to operate

無論多么復雜鑄件，均不必制芯、下芯可鑄出φ3—5mm小孔；培養一個高等級造型工少5-10年，而培訓一個EPC工藝成熟的操作人員只需三天；也即技術越發達，操作越簡化。

No matter how complex the casting is, it is not necessary to make the core and lower the core to cast a 3-5mm small hole; it takes at least 5-10 years to train a high-level molding worker, but only three days to train a mature EPC process operator; that is, the more developed the technology is, the more simplified the operation is.

d、工藝穩定，產品廢品率低

d. The process is stable and the rate of waste products is low

砂型鑄造從配砂到造型、下芯、合箱等工序，人為因素造成的質量問題較多。EPC工藝不配砂、混砂、造型、修型，減少了許多人為因素，主要生產過程是按固定程序執行。因此，廢品率低。

There are many quality problems caused by human factors in the process of sand mold casting from sand mixing to molding, core setting and box closing. EPC process does not match sand, mix sand, mold, repair, reduce many human factors, the main production process is carried out according to fixed procedures. Therefore, the scrap rate is low.

加之負壓狀態下澆注有較強的補縮作用。消失模鑄造工藝可以使模型（EPC—聚苯乙烯泡沫塑料模型）群體埋箱澆注，生產效率比砂型鑄造高4-5倍；落砂、清理工作量大大減少；不要配砂、混砂，不僅減少丁生產占地面積(面積可減少30%-50％)，而且還大大減輕了工人體力勞動，勞動用工比砂型鑄造減少50％，制造成本比傳統精密鑄造降低40％-60％，同傳統砂型鑄造相當；采用消失模鑄造工藝，小幾兩大到幾十噸鑄件，從有色金屬鑄件到鑄鋼鋅鐵件均可生產。

In addition, pouring under negative pressure has a strong feeding effect. The lost foam casting process can make the model (EPC polystyrene foam model) embedded in box casting, the production efficiency is 4-5 times higher than that of sand mold casting, and the amount of sand washing and cleaning work is greatly reduced. Not mixing sand and mixing sand can not only reduce the production area occupied by Ding (the area can be reduced by 30% -50%), but also greatly reduce the manual labor of workers, and the labor employment is reduced by 50% compared with sand casting. The manufacturing cost is lower than that of the traditional precision casting, 40%-60% and the simultaneous interpreting sand casting are similar. The lost foam casting process can be used as small as several to several tens of tons of castings, from non-ferrous metal castings to cast steel and zinc iron parts.