Archives

spacer
spacer
spacer

Casting flow coating and its equipment

1. Refractory powder Commonly used refractory powders include zircon powder, brown steel jade powder, bauxite powder, quartz powder, mullite powder, chromite powder, magnesia powder, etc. zircon powder is an excellent refractory powder for cast steel. Zircon powder, namely zirconium decanoate powder, becomes zro267.2%, sio232.8%, melting point 2430 ± 20...

spacer

Basic properties and test methods of flow coating

1.Properties of flow coating (1) The rheological properties meet the requirements of flow coating process. (2) Suitable coating thickness. Generally, the coating thickness difference should be ≤ 0.2mm. (3) With appropriate permeability. The diameter of sand particles with a surface depth of 1.5-2 times. Some of the following performance...

spacer

Development of flow coating technology for casting coating

1.Flow coating equipment The flow coating equipment includes two parts: one is the gripping and rotating device of sand mold (core); the other is the flow coating machine. 2.Selection of power source for flow coating There are three methods: gravity method, air pressure method and pump pressure method. 2.1...

spacer

Comment on coating process of casting coating

1. Brushing and swabbing 2. Dip coating 3. Spraying (1) The pressure of compressed air system is usually 500-600kpa. (2) The droplet velocity carried by the air flow is very high, and there are many rebound after impact on the surface, which affects the surface quality of the coating....

spacer
spacer

Development and present situation of casting coating

1. Casting coating theory (1) The mechanism of anti sticking sand, including sintering stripping theory, bright carbon theory and so on. (2) In order to prevent the coating from cracking and peeling off, it is pointed out that the rapid thermal expansion of the coating and the sand mold...

spacer

Formula analysis of a casting coating

Bauxite 90%, quartz powder 10%, phenolic resin 2%, white emulsion 2%, calcium bentonite 3%, washing powder 0.1%, isopropanol 0.1%, appropriate amount of water 2. Silica sand powder to bauxite 2:3, (refractory 100%), GM-1 resin 2%, silica sol 3%, lithium bentonite 1%, cmc1.5%, flat as 0.3%, water reducer 0.5%, appropriate...

spacer