所謂熔模鑄造工藝，簡單說就是用易熔材料（例如蠟料或塑料）制成可熔性模型（簡稱熔?；蚰Ｐ停?，在其上涂覆若干層特制的耐火涂料，經過干燥和硬化形成一個整體型殼后，再用蒸汽或熱水從型殼中熔掉模型，然后把型殼置于砂箱中，在其四周填充干砂造型，最后將鑄型放入焙燒爐中經過高溫焙燒（如采用高強度型殼時，可不必造型而將脫模后的型殼直接焙燒），鑄型或型殼經焙燒后，于其中澆注熔融金屬而得到鑄件。
The so-called investment casting process, in short, is to use fusible materials (such as wax or plastic) to make a fusible model (for short, investment mold or model), coated with a number of layers of special refractory coatings, after drying and hardening to form a whole shell, then with steam or hot water from the shell melt model, and then the shell. Place the mold in the sand box and fill it with dry sand. Finally, put the mold into the calciner and bake it at high temperature (for example, when the high strength mold shell is used, the mold shell can be baked directly without molding). After baking, the mold or shell can be cast with molten metal.
熔模鑄件尺寸精度較高，一般可達CT4-6（砂型鑄造為CT10~13，壓鑄為CT5~7）,當然由于熔模鑄造的工藝過程復雜，影響鑄件尺寸精度的因素較多，例如模料的收縮、熔模的變形、型殼在加熱和冷卻過程中的線量變化、合金的收縮率以及在凝固過程中鑄件的變形等，所以普通熔模鑄件的尺寸精度雖然較高，但其一致性仍需提高（采用中、高溫蠟料的鑄件尺寸一致性要提高很多）。
The dimension precision of investment casting is higher, generally up to CT4-6 (sand casting is CT10-13, die casting is CT5-7). Of course, due to the complex process of investment casting, there are many factors affecting the dimension precision of the casting, such as the shrinkage of the mold, the deformation of the investment mold, the linear change of the shell during heating and cooling, the shrinkage of the alloy. As well as in the solidification process of casting deformation, so although the ordinary investment casting size accuracy is higher, but its consistency still needs to be improved (using medium and high temperature wax casting size consistency to improve a lot).