In recent years, many units in our country have successfully developed many series of mold materials and the product quality is high. WMⅡ series moulding materials have many varieties, and can provide moulding materials for different shell materials, different dewaxing temperatures, and different sizes and shapes, which can be used to replace imported products. WM series of mold materials, more than ten varieties, with an annual output of about 200 tons. The high level of investment casting technology in the United States benefits from three pillars, namely advanced technology, high-quality raw materials and strict and serious operations. For example, every time the mold material used by the American investment casting factory is a new mold material produced by the mold material factory.
The investment casting factory does not recycle the used mold material, and the recycled mold material is sent to the professional mold material production plant for unified treatment. Due to the high quality and uniformity of the mold material from the mold material factory, the dimensional accuracy and surface quality of the wax mold in the investment casting factory are guaranteed, and the ash content and impurities of the wax are also controlled. There are usually professional companies abroad that bring together relevant technologies to produce investment casting mold materials. The produced mold material has good stability, low shrinkage rate, smooth surface, high strength, good formability and can produce mold material with different properties for different parts. The types of mold materials produced abroad include filler mold materials and non-filler mold materials, and are subdivided into model wax, repair wax, emulsifiable wax, gate wax, and bonding wax for embedding wax.
Investment casting wax is a special material for making part casting molds in investment casting, and it is one of the important factors that determine the quality of castings. The varieties of wax for investment casting mainly include low temperature mold material, medium temperature mold material and high temperature mold material. At present, the main mold materials used are low temperature mold material and medium temperature mold material. The mold materials imported by my country are also mainly medium temperature mold materials. The quality of mold material performance is determined by its formula, so each manufacturer attaches great importance to the research of mold material formula.