What is the point of using film coated sand

What is the point of using film coated sand?

With the continuous progress of science and technology, all walks of life has also been a great development, about the development prospects of the film coated sand it is also very good, so the demand continues to increase, the market has also increased a lot of manufacturers, and we as a manufacturer, here is also very necessary for you to talk about the key points of the use of film coated sand? Interested partners can take a look.

We also have a lot of questions accompanying you before using this film coated sand, so that you want to use it better, you need to understand some of its knowledge points. First of all, you have to be clear about the film coated sand to the raw sand as raw material, thermoplastic phenolic resin, the main choice of natural quartz sand as a reinforcing agent. Then according to the user's different technical requirements, the rate, curing speed, demoulding, mobility, collapse, casting surface quality, storage and so on. Will be adjusted accordingly. Automobiles, tractors, hydraulic parts, etc. is one of the good mould materials This product sand core is not easy to absorb moisture, long-term storage strength is not easy to reduce, easy to store and transport and use. It can also be used as metadata now, and users have a wide range of choices. Users can choose according to their own situation. In addition, the use of coated sand has good strength properties, and can be used for shell shape, medium strength hot core box solid core, low strength non-ferrous alloy sand core and so on. It can be produced. In particular, it has good collapsibility, which is conducive to cleaning up the castings and improve product performance, because the hollow shell core has good air permeability and fewer porosity defects.

Coated sand is better quality than sand core, dense and not loose. Even with little or no coating, a good quality casting surface can be obtained. Good mobility, good moulding of sand core, clear contour, can produce very complex sand core, such as cylinder head, cylinder block and other water jacket sand core. The characteristics of coated sand are shown as vibration sand cleaning, high strength, low gas generation, low expansion; good dispersion, high casting surface finish; especially its shell shape without layers, good thermal stability, good thermal conductivity, good mobility, casting surface finish, high strength, high temperature resistance, low expansion, good demoulding, good resistance to sand, shell uniformity and non-spalling, fast curing speed. In addition, its raw sand is the main body of coated sand. The requirements for raw sand are high refractoriness, low volatiles and high particle strength. Natural silica sand is usually used, mainly because of abundant reserves and low price. Can meet the casting requirements. At this time, only special requirements of the casting is used special sand. This is a fusible model made of fusible materials (wax, plastic, etc.). The model is coated with several layers of refractory paint, dried and hardened into a monolithic shell, then the shell is heated to make the model melt, then baked at high temperatures to form a refractory shell, the liquid metal is poured into the shell, and discarded after cooling.

The content of the above article is a small introduction to the main points about the use of coated sand. If you don't know before then now you can take a look. The next issue will also tell you and its related knowledge. Remember to come to watch.