High Quality Making Mold Core Precoated Resin Sand with Low Thermal Expansion
Description of precoated resin sand :
Precoated resin sand uses high-quality natural quartz sand as raw sand, thermoplastic phenolic resin, methenamine and enhancers as raw materials.
Depending on the technology needs of users, the curing speed, stripping, flowability, collapsibility, the casting surface finish, storage of silica resin coated sand can be adjusted and matched appropriately.
silica resin coated sand is one of the best moulding sand for cars, tractors and hydraulic parts.
Pictures of products:
for Aluminum 
for brass
for Iron 
for steel
Products Specifications
| Collapsible Coated Sand | AFS | Tensile strength Mpa | Bending strength Mpa | Emission ml/g | Melting point℃ | advantage | Application |
| 60—80 | 2.0—3.2 | 3.0—6.0 | ≤15 | 90—100 | Low gas emission, good collapsibility, easy sand cleaning and good surface quality | Aluminum alloy, copper alloy and other non-ferrous metal castings. Such as aluminum cylinder liner. |
| Collapsible Coated Sand | AFS | Tensile strength Mpa | Bending strength Mpa | Emission ml/g | Melting point℃ | Advantage | Application |
| 50—72 | 4.0—6.0 | 7.5—12 | ≤18 | 90—100 | lower in-plant smoke, odor and emissions,avoiding blowhole defects | Precision complex casting, hydraulic parts |
| Hign-temperature Resistant Coated Resin Sand | AFS | Tensile Strength Mpa | bending strength Mpa | Gas emission ml/g | Melting poin℃ | Advantage | Application |
| 50—70 | 3.0—5.0 | 5.5—10 | ≤20 | 90—105 | good high temperature performance, low expansion rate, good thermal conductivity and resistance to sand sticking | It is suitable for the production of cast iron and steel castings with complex structure |
| Anti Shelling Coated Sand | AFS | (tensile strength) | bending strength Mpa | emission ml/g | Melting point℃ | Advantage | Application |
| 50—70 | 3.0—4.2 | 5.5—8.5 | ≤22 | 95—105 | The shell mold has good emptying effect, uniform wall thickness, anti stripping and anti shelling | For various core making .such as pipes,hub. |
Features :
1. Vibration sand cleaning, high strength, low gas, low expansion;
2. Lax, good casting surface finish;
3. Burly mould shell surface, good thermal stability, good thermal conductivity, good liquidity, smooth casting surface;
4. High strength, high temperature, less expansion, good mold release, no sand sticky;
5. Uniform shell layer, fast curing;
Application :
Resin coated sand is a non-quartz artificial sand employed to the production of metal casting.
silica resin coated sand also can be used for many casting methods such as vacuum casting, VRH, LFC, investment casting, common and resin sand. The fused ceramic foundry sand can be with many adhesives, greatly improving the quality of castings.
1. Production of low pollution coated sand, reduce the use amount of resin and curing temperature; improve coated sand's overall performance, especially in high temperatures; research and develop of pollution-free phenolic resin alternatives.
2. Improve the regenerative capacity of coated sand.
Work site and lab testing:
the Process Line 
finished product
Transverse strength 
tensile strength
Product Tags:
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6.0Mpa Low Thermal Expansion Precoated Resin Sand Images
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