Control of Lost Foam Casting Materials

The field of precision casting is a relatively intensive and technology-intensive one. Many processes, such as shell making, firing, pouring, cleaning, and polishing, have high labor efficiency and harsh environments, and at the same time require high operating skills. Part of the entire process of lost foam casting technology, such as the use of robotic arms and intelligent robots in the shell-making process, has been used overseas for 30 years.

The performance parameters of the mold material include: melting temperature and condensation temperature ranges, temperature resistance, thermal deformation rate and shrinkage rate, compressive strength, strength, viscosity, fluidity, coating, fineness, etc. It is difficult for general-purpose precision casting companies to test these performance parameters one by one. The chemical parameters of aluminum dihydrogen phosphate include: SiO2 content, relative density, Na2O content, pH value, viscosity, colloidal solution particle size, etc. These chemical parameters mainly affect the strength of the shell and the coating. Stability and powder-to-liquid ratio of architectural coatings

Castings obtained by lost foam casting generally have very high precision specifications and high surface smoothness. Therefore, some mechanical processing can be reduced, thereby saving metal raw materials. In addition, it can also cast more complex castings, so it can be said to be high-precision. What materials are generally used for precision casting? It's a great way to cast. Common stainless steel plates, carbon steel, alloy steel, etc. can be precision cast, and heat-resistant liquid sand is brushed layer by layer on the wax model. After getting enough thickness, dry it in the sun, and then heat it up to melt the wax mold inside and get a concave mold consistent with the required blank. Then cast molten steel in the cavity, peel off the casing after drying, and you can get a precision-made lost foam casting product! The purpose is to make the formed product meet or be close to the final specified shape or specification—this is high-precision forming technology. It is a combination of modern technology (electronic information technology, new material technology, precision machining and testing technology) and traditional forming technology (casting, casting, welding, laser cutting, etc.).