What are the application fields of Baozhu sand? What are the uses and characteristics of Baozhu sand

1. The application of pearl sand in large castings.

At present, Baozhu sand is widely used in resin sand (furan resin, phenolic resin), sodium silicate sand (organic grease, CO2 hardening), and coated sand. Suitable for all kinds of metal castings: such as: carbon steel, alloy steel (high manganese steel, high chromium cast iron), cast iron, cast copper, etc.

2. The application of pearl sand in investment casting.

Orb sand. It has high refractory degree and can replace zircon sand in the surface layer of steel casting.

3. The application of pearl sand in large steel castings.

After long-term exploration with foundry manufacturers, it is concluded that the thickness of the surface sand should be 10 20mm (the thickness of the tightening); For complex shapes, thick parts, and corners, increase the thickness appropriately, and still use ordinary quartz sand for back sand.

The sand can also be mixed with quartz sand, and the proportion changes according to the size of the casting and the change of steel grade, which also achieves the effect of non-sticky sand and easy to collapse.

1. The application of pearl sand in the production of steel castings, replacing zircon sand and chrome sand, is applied to large steel castings.

2. The application of Baozhu sand in the production of engine castings, the production of engine casting oil channel and waterway core, which has less porosity tendency to produce castings, avoids leakage of castings, and is conducive to sand cleaning of oil channel waterway.

3. The overall use of pearl sand in stainless steel castings.

4. V method and lost foam casting are used.

Uses of Jewel Sand:

1. Baozhu sand is widely used in resin sand (feed resin and phenolic resin), sodium silicate sand (organic binding resin and CO2 hardening) and coated sand.

2. It is suitable for all kinds of different metal castings of enterprises, such as carbon steel, alloy steel (high carbon steel, high chromium cast iron), cast iron, cast copper, etc.

3. Baozhu sand is a kind of sand made artificially, which is suitable for various casting technology methods, such as V method, VRH method, lost foam casting, investment casting, ordinary sand casting (clay sand, sodium silicate CO2 hardening), resin sand, etc.

4. It is suitable for the production of various binders and castings that affect metal materials. It can not only greatly improve the quality of castings, but also has the advantages of easy sand removal, and the operation of sand making process is simple and convenient.

Features of Baozhu Sand:

1.Spherical particle shape, the particle shape is close to perfect circle, the surface is smooth, and there is no uneven texture. It has good flow and fillability, and is able to obtain good formability and mold strength.

Collapse, easy to disassemble the sand. Large savings than the same amount of sand binders.

2.The influence coefficient of thermal expansion is low, which is lower than that of chrome ore and other national special sands. Therefore, the production of castings has high structural size calculation accuracy, few cracks and surface defects, and high yield of casting products.

3.Casting sand is precious and has good crush resistance, small size, high strength, and is not easy to break even if it is used repeatedly, the casting process reduces the dust pollution of the hidden environment of the production ring, has good reproducibility, reduces the discharge from industrial wastewater, and is very environmentally friendly.

4.The fire resistance is good, and the main component is alumina, so the fire resistance is very good. Refractories meet the requirements of casting a wide range of metals and alloys.

Advantages of Baozhu Sand:

1. The forming sand does not contain toxic substances, and no toxic gas is produced during the pouring process.

2. Abundant resources, many parts of our local materials;

3. The casting is non-sticky sand, the surface is smooth and clean, and the workload of cleaning personnel is less;

4. The dimensional accuracy of the castings produced, reduce the weight of the castings, and reduce the casting allowance;

5. Low waste sand discharge. For every 1t of castings produced, only waste sand is discharged;

6. The casting process company has a high production rate, saves the use of metal, and the number of molten iron from friends or sample enterprises can be used to produce more castings;

7. Reduce the porosity of castings, improve the internal quality of castings, and improve the yield of castings.

Characteristics of Baozhu Sand:

1. The pollution-free raw materials are all bauxite, the molding sand is gray-brown, round, and does not produce a large amount of waste gas in the process of casting, and the waste sand does not exist without toxicity.

2. There is no coal in the low-energy consumption materials, which is energy-saving, and the surface of the sticky sand casting is significantly improved, which reduces the cleaning work; Improving the surface roughness and dimensional accuracy of castings, making subsequent machining easier to handle and saving energy.

3. High-quality production and less sand sticking on the surface of castings, low sand inclusion and sand washing defects, reducing casting porosity, increasing the structural strength of some castings, and increasing the yield rate as early as possible.

4. Low-cost sand has good reuse performance, can be recycled, low casting production cost, and less emission. There is no need to update the production technology of the enterprise, and the upgrade is simple and the cost is low.

1. The forming sand does not contain toxic substances, and no toxic gas is produced during the pouring process. Sanshi castings are non-sticky sand, the surface is smooth and clean, and the workload of cleaning personnel is less;

2. The casting process company has a high production rate, saves the use of metal, and the same number of molten iron can be used to produce castings; Reduce the porosity of the casting, improve the internal quality of the casting, and improve the yield of the casting;

3. The particle size of the pearl sand is close to spherical, the surface is smooth, and the structure is dense, so that the binder can be evenly covered and has good fluidity;

4. Baozhu sand has high hardness, easy to break without suppression, almost no ash, and the amount of resin can be reduced by more than 30%, which can reduce the gas generation of core sand and reduce the risk of forming pores;

5. The thermal expansion coefficient of Baozhu sand is small, the stability of the sand mold is good, and there is no cracking, which reduces the casting defects such as veins caused by sand expansion; Good reuse and regeneration performance, high durability and regeneration rate, with a regeneration rate of up to 98%.

Disadvantages of Orb Sand:

1. Manganese sulfide pores generated in the coated sand sand casting process. These vents are located underneath the skin of the grey cast iron castings and are highlighted after many of the upper treatments. Because the temperature of the casting is low, the slag inclusion in the pores is relatively small.

2. The casting hole problem of coated sand caused by core gas. These holes are basically caused by the poor outgassing of the sand core, which is generally hardened in the core casting process.

3. Slag containing liquid. After the lamination of the sand is completed, small holes appear on the surface of the casting, the diameter is small, and the distribution is scattered, which will produce the condition of liquid slag.

When applying, first of all, the pearl sand does not need to be used in the same way as silica sand, only a little adhesive is needed.

Gao Huai Secondly, Baozhu sand.

The specifications are spherical, the appearance is lubricated, and the slight shaking can be real, and the air permeability is good.

Clause. 3. Baozhu sand products are neutral, so there is no acid and alkali corrosion on castings, that is, equipment, and can cast arbitrary products.

Clause. Fourth, the pearl sand casting, good mobility, no need to clean the sand, only need to sprinkle, you can be scattered, the appearance of the casting lubrication is high.

Fifth, Baozhu sand Isaac, ** stay easy, so after use, can not be disposed of as waste relatives and friends, only need to be slightly processed, can be reused.

The use of pearl sand, understanding the above points, will inevitably get twice the result with half the effort, and the cost will be reduced, which must be known.