Functional analysis of lost foam casting coatings

Lost foam casting coating has the effect of preventing mechanical sticky sand and thermochemical sticky sand from casting, improving the rigidity of the foam model, preventing deformation during burial, and contributing to the rapid discharge of thermal decomposition gas of the lost mold model, so why does the lost foam casting coating gather so many functions, we will analyze from six aspects.
Lost foam casting coating has these six characteristics: (1) high strength and rigidity, to prevent the shape deformation and damage by dry sand during molding; (2) high fire resistance, to prevent sand sticking to the surface of the casting during pouring; (3) excellent air permeability, can quickly export the product of mold gasification; (4) strong adhesion, prevent the coating from cracking or even falling off during the production process; (5) good coating, can easily apply a certain thickness of coating when used; (6) good sintering and peeling, That is, after pouring, a paint shell that is easy to peel off automatically is formed, so as to obtain a casting with a smooth surface.