Heavy Duty Casting Anti Sticking Sand EPC Coating

• Usage: Foundry Coating
• Color: off-White/Grayish Yellow
• Appearance: Powder
• Model NO.: JY-ZG JY-ZT JY-GM JY-HJ
• Method: DIP Coating, Spray Coating, Brush Coating
• Components: Film Forming Matter
• Main Raw Material: Zirconia, Corundum, Graphite, High Alumina, Kyanit
• Substrate: Foam Plastic Model
• Expiration Date: 1 year
• Formation Mechanism: Conversion Type
• Packaging: 25kg 50kg
• Coating Method: DIP Coating, Spray Coating, Brush Coating
• Product Features: High Breathability, High Fire Resistance, and High
• Product Category: Water Based Coatings, Alcohol Based Coatings, Resi
• Product Appearance: Powder Like
• Product Specifications: 200 (Mesh)
• Compressive Strength: 50 (Megapascals)
• Fire Resistance Temperature: 1700ºC
• Enterprise Type: Manufacturer
• Place of Production: Henan, China
• Transport Package: 25kg, 50kg Packaging
• Specification: 25KG 50KG
• Trademark: Jieyang
• Origin: China
• HS Code: 3208909090
• Production Capacity: 50000

Product Description

Lost foam coatings are divided into lost foam cast iron coatings, lost foam cast steel coatings, lost foam steel coatings, and lost foam coatings.
Basic composition
Vanishing coating is generally composed of refractory materials, binders, carriers (solvents), surfactants, suspensions, thixotropes, and other additives. Various components are uniformly mixed together and play a comprehensive role in the coating hanging and metal liquid pouring process.
1. Commonly used refractory materials include corundum, zirconia sand, silica sand, bauxite, kaolin clinker, magnesium oxide, diatomaceous earth, kyanite, etc. When producing different lost foam castings, different refractory materials should be used to make coatings. Different materials of castings have different requirements for the fire resistance, chemical stability, and thermal insulation of coatings. Usually, refractory materials such as diatomaceous earth and talc powder are used for the lost foam coating of aluminum castings during production; Commonly used powder refractory materials for cast iron parts include silica sand, bauxite, kaolin clinker, brown corundum, etc; Powder refractory materials such as corundum, zirconia sand, and magnesium oxide are commonly used for steel castings.
In addition to correctly selecting the type of refractory material, the particle size, distribution, and particle shape of the refractory material should also be selected correctly when preparing lost foam coatings. Because the particle size, distribution, and shape will affect the breathability of the coating. According to reports, circular refractory particles are preferred for use in lost foam coatings, with coarse and concentrated particle sizes being more suitable.
2. The commonly used adhesives can be roughly divided into two categories: inorganic and organic, which can be used simultaneously in one coating. Inorganic binder (high-temperature binder): Hydrophilic type: clay, bentonite, water glass, silica sol, phosphate, sulfate, polyaluminum chloride. Hydrophobic type: organic bentonite organic binder (low-temperature binder): hydrophilic type: syrup, pulp waste liquid, dextrin, starch, polyvinyl alcohol (PVA), polyvinyl acetate lotion, water-soluble phenolic resin, natural gum. Hydrophobic type: asphalt, coal tar, rosin, phenolic resin, dry vegetable oil, synthetic oil, ethyl silicate, polyvinyl butyral (PVB)
3. Carrier: There are two types of lost foam coatings: water-based coatings and alcohol based coatings, but water-based coatings are more commonly used in production.
4. Suspension agent: A substance added to prevent the precipitation of solid refractory materials in coatings. The commonly used suspension agents for water-based coatings include bentonite, attapulgite, sodium carboxymethyl cellulose, polyacrylamide, sodium alginate, etc. The commonly used suspension agents for organic solvent coatings include organic bentonite, lithium bentonite, attapulgite, polyvinyl butyral, etc.
Usage
Process: Dip coating, spray coating, brush coating
1. Mix the paint with 50% to 60% water and stir for 0.5-1 hour. Mix with water according to the required concentration.
2. During use, it can be sprayed, dipped, or brushed.
3. The coating thickness is determined based on the size of the casting, and generally 0.8-1mm is suitable for small pieces weighing less than 50 kilograms. It is better to use 1-2MM for large items.
4. After the paint is applied, place the model in a drying room or outdoors with good sunlight at a temperature of 50-55 degrees for drying or air drying.
Note: The white mold coating needs to wait for the first coat to completely dry before proceeding to the next coat, otherwise it may cause sand sticking and peeling of the casting.
Vanishing dry powder coating is easy to use, convenient to transport, easy to store, low in cost, and effective. Add water and stir to use. Reduced the difficulty of workers' operations, greatly saved coating costs for enterprises, and provided one-stop service for lost foam technology guidance (from factory budget to production of finished products). Special product research and development can be carried out according to user needs.
Product features: Good leveling, suspension and coating properties, high coating strength, no cracking, good breathability, excellent anti sand adhesion performance, good peeling performance, can be stored for a long time without precipitation, relying on the advantage of refractory material origin. High quality and low price