Archives

Water based lost foam casting coating for cast iron

Lost foam casting technology has the advantages of wide application range, accurate size and shape of lost foam casting, smooth surface, convenient mechanized production, low production cost, free design, high production efficiency, clean production, green casting and so on. In recent years, with the deepening of the research on...

spacer

Experimental analysis of corundum water-based spray casting coating

1.Effect of the amount of suspending agent on the properties of spray casting coating Based on the basic research and development experiments, the effects of different addition amounts of Attapulgite on the properties of casting coatings were investigated. The addition amount of attapulgite directly affects the suspension stability, shear...

spacer

Experiment of corundum water-based spray casting coating

1.Raw materials and instruments 1.1 Raw materials White corundum , attapulgite, CMC (sodium carboxymethyl cellulose), PVA (polyvinyl alcohol), efka 3288, zinc oxide, sodium pentachlorophenol, silicone defoamer and other additives are all industrial grade. 1.2 Instruments Zmd-550 dispersion sand mill, tu-4 cup, NDJ-5S rotary viscometer, gas evolution...

spacer

Corundum water-based spray casting coating for large castings

With the development of the casting industry, the casting coating also began to change from the traditional alcohol-based casting coating to water-based casting coating. Especially in recent years, the casting industry began to set off a green wave, and the water-based casting coating with low pollution and low energy...

spacer
spacer
spacer

Drying of casting coating

Drying is the process of removing the carrier from the coating. The sand core should be dried in time after coating. Otherwise, the water (carrier) will react with the cold core resin group, which will reduce the coating strength of the sand core surface and cause quality problems in...

spacer

Suspension control of casting coatings

Suspensibility refers to the ability of coating to resist stratification and precipitation of solid refractory powder. On the premise of ensuring other properties, the higher the suspensibility, the better. Good suspension, uniform coating, no flow, simple operation, easy drying, high strength and no cracking after drying. There are many...

spacer
spacer

Application and control of casting coating density

Uniform and stable coating composition is the basis to ensure the coating process performance, which belongs to static control for the user, and the stability of incoming materials is guaranteed by the coating supplier. However, due to the change of water evaporation, refractory powder segregation, viscosity and density, it...

spacer