Water glass casting coating is a water-based coating composed of water glass binder, refractory powder, surfactant, and defoamer. In addition to ensuring good working characteristics of the shell and high quality requirements for castings, the coating itself should also have good process performance.

1. The coating should have good applicability and coverage, so that it can be more uniformly and tightly applied to and cover the pattern surface.

2. The coating should have good fluidity and appropriate viscosity, so that the pattern surface has a suitable coating thickness, and can be evenly distributed without accumulation or dripping.

3. After thorough stirring, the coating should be well dispersed, uniform from top to bottom, without sedimentation, caking, or bubbles, with stable performance.