Ceramic Sand Introduction

Molten ceramic sand (commonly known as "baozhu sand") is a calcined bauxite with aluminum oxide (Al2O3) as the main component. It is made into casting sand with different particle sizes by melting, blowing, and sieving. The product structure is compact, the grain shape is very spherical, the surface is smooth and the surface area is small. It has the advantages of high temperature resistance, good air permeability, collapsibility, resistance to acid and alkali erosion, low crushing rate and high regeneration performance. Zircon sand and other foundry sands. The application of molten ceramic sand can improve the quality of castings, reduce production costs, reduce environmental pollution, and avoid occupational silicosis caused by traditional modeling materials for foundry manufacturers. Molten ceramic sand is currently recognized as the most ideal new environment-friendly foundry sand in the industry, and has a very broad development prospect.

Instructions for using bead sand

一, drainage sand

Treasure pearl sand is widely used in ladle drainage agent. Ladle drainage agent has the advantages of high fire resistance and good fluidity. Therefore, the drainage agent should be formulated with a variety of refractory materials with different particle sizes and materials. Orb sand is spherical and has good fluidity. And the main content of Baozhu sand is alumina, which is a very good refractory material. Fire resistance is 1800 degrees or more. Therefore, the use of precious pearl sand as the ladle drainage agent is also based on the above two points.

Two, Vanishing Mode

Orb sand is spherical in shape, has good fluidity and high permeability, and can prevent and reduce casting defects such as slag inclusions and pores. Orb sand has a fire resistance greater than 1800 degrees Celsius and is a neutral material. It is not only used for production, Cast iron and cast steel can also produce castings such as high-manganese steel and heat-resistant steel; Baozhu sand has no damage and powder, and has a high recovery rate, which cleans the workshop environment and reduces the production cost of castings.

III. Raw sand for casting

Casting is basically inseparable from sand, which is also a necessary condition for casting. Traditionally and most of the current casting is still silicon sand (divided into cast steel sand and cast iron, non-ferrous sand).

Traditional silica sand is natural sand. It has disadvantages in casting: low fire resistance, large specific surface area, waste of binder, poor recycling and so on. The precious pearl sand just makes up for the shortcomings of silica sand. Therefore, it is best to use bead sand on casting sand.

Ⅳ 、 Coated sand shell

The coated sand shell casting process can make the casting surface better in quality, more accurate in size, reduce or eliminate machining, shorten the production cycle, save metal materials, and reduce production costs, and this casting process does not require skilled workers, or even It can be completed by female workers, suitable for batch and mass production of small and medium-sized castings of various metals. Baozhu coated sand has the characteristics of less resin addition, high strength, low gas generation, high temperature resistance, good mold release, easy disintegration, excellent filling performance and storage and transportation performance, and has been widely used. Baozhu coated sand is widely used in engines, diesel engines, cylinder heads, bucket teeth, water pumps, valve bodies, hydraulic parts, cast iron, cast steel and non-ferrous metals industries, especially in coated stainless steel and heat resistant steel Breakthrough progress.

V. Casting Coatings

The foundry coating requires a certain degree of fire resistance, air permeability, flowability, leveling, brushing, and economical. Baozhu sand can replace refractory materials such as zircon sand, chromite sand and corundum in casting coatings. And good fluidity, high fire resistance, good air permeability and other advantages.

Under the same conditions, Baobao pearl sand is more economical and economical than the above materials, and it has good economics in casting coatings.