Investment Casting Grade Fused Silica with Low Thermal Expansion Coefficient

• Customization: Available
• Certification: ISO
• Application: Rubber, Ceramic, Casting
• Model NO.: 10-20mesh, 20-50, 30-50, 50-100, 200mesh 325mesh
• Fused Silica Sand: 0-1mm,1-3mm,3-5mm,4-10mesh,10-20,20-50,50-100mesh
• Fused Silica Powder: -100,-120f,-150L,200f,270f,325mesh
• Fe2o3: <0.003%
• Al2O3: <0.03%
• Amorphous Sio2: >99%
• Quartz Sio2: <0.1%
• Cristobalite Sio2: <0.1%
• Transport Package: Paper Bag, Plastic Bag, Jumbo Bag, Pallet
• Specification: SiO2>99.9%
• Trademark: Chemsize
• Origin: China Lianyungang
• HS Code: 32074000
• Production Capacity: 10000mt/Year

Product Description

Manufacturer of Investment Casting Grade Fused Silica with Low Thermal Expansion Coefficient. High-quality fused quartz material for various applications.

Product Description

Grade A Fused Silica sand & powder for investment casting with low thermal expansion coefficient. High purity material ideal for various applications.

1.	Physical Properties
1.1	Composition		SiO2
1.2	Structure		Amorphous
1.3	Colour		Transparent or white
1.4	Melting Temperature		approx.1750ºC
1.5	Specific Gravity		2.21g/cm^3
1.6	Hardness		7 Mohs
1.7	Thermal Expansion		0.5*10^-6
2.	Chemical Properties
		Grade A	Grade B	Grade C
2.1	SiO2	>99.9%	>99.85%	>99.7%
2.2	Al2O3	<100ppm	<150ppm	<0.05%
	The finer the power,the higher the Al2O3,as powder is produced by ball mill with Alumina ball.
2.3	Fe2O3	<30ppm for grain	<60ppm	<0.05%
2.4	CaO	<30ppm	<60ppm	<0.02%
2.5	Na2O	<30ppm	<60ppm	<0.02%
2.6	K2O	<30ppm	<60ppm	<0.02%

Discover Investment Casting Grade Fused Silica with Low Thermal Expansion Coefficient from Lianyungang Chemsize. Ideal for high precision applications.

		Standard
		10-20	30-50	50-100	-120	-200	-325
Mesh	Microns
+8	2360	<2
+12	1700	6-25
+16	1180	33-50
+20	850	25-45	<1
+30	600	13	25-40
+40	425		32-45
+50	300		15-30	<13
+70	212			30-60
+80	180		0-11			<1
+100	150			28-51	<10	<1
+140	106			4-16	7-13	<10
+200	75			<2	10-15	<10	<3
+325	45				14-20	15-30	4-11
Pan		<3	<2	<1	45-55	70-80	86-97

Fused Silica

Pan designates the percentage of fused silica passing the last reported screen for each size.

Special Features:

Fused Silica features an extremely low coefficient of thermal expansion, consistent chemistry, and carefully controlled particle size distribution.

Applications:

Used in industries such as thermal ceramic, refractory, investment casting, EMC, solar crucible, quartz marble, powder coating, etc.

Available Sizes:

• 0-1mm


• 1-3mm


• 3-5mm


• 0.2-0.5mm


• 0.1-0.5mm


• -10mesh


• 10-20mesh


• 30-50mesh


• 50-100mesh


• -100mesh


• -150mesh


• -270mesh


• 30-60mesh


• 60-120mesh


• 40-70mesh


• 70-140mesh


• 100-200mesh


• 120F


• 200mesh


• 325mesh


• 400mesh


• 600mesh


• 800mesh


• 1250mesh

The particle size can be produced as per the customer's special requirement.

Company: Lianyungang Chemsize International Trading Co., Ltd.

Third Party Test Report

Production Process

Product Description: Fused Silica

Fused silica is a high-purity quartz sand that has been melted to form glass. Its high volume stability, low volumetric expansion, and high purity make it an extremely useful and versatile material for refractory applications, such as in aluminum launders or other highly cyclical applications.

At Lianyungang Chemsize International Trading Co., Ltd., we carefully select high-purity silica sand (SiO2 > 99%) from local Donghai/Xinyi as our raw material. The silica sand is melted at high temperatures (2000-2300 ºC) to form an amorphous silicon dioxide glassy ingot, which is then cooled and processed into fused silica lump, sand, and powder based on customer requirements.

Detailed Photos

Discover our Investment Casting Grade Fused Silica with a low thermal expansion coefficient, perfect for high-quality pictures and precision applications.

Packaging & Shipping

Our Investment Casting Grade Fused Silica with Low Thermal Expansion Coefficient comes in 25kg plastic woven bags on pallets for convenient delivery. Ideal for various applications.

Explore our Investment Casting Grade Fused Silica with Low Thermal Expansion Coefficient for superior quality and precision in ceramic fabrication.

Fused Silica Making Process

Fused Silica is produced using high purity crystal silica from China Donghai-Xinyi. It is electrically fused at temperatures ranging from 1800-2000ºC to create amorphous Silicon dioxide. The material is then specially engineered into various forms such as lumps, cullet, ingots, sand, grain, granular, and powder flour. These forms are designed for manufacturing PV fused silica crucibles, thermal ceramics, refractories, EMC investment casting ceramic shells, and more.

Fused Silica Sand Appearance and Specifications:

• Must not contain any unfused parts


• Should not have any foreign materials like string, plastic, carbon, wood, metal, or other contaminants


• Only conditional black dots are allowed


• Black spot diameter should not exceed 2mm


• Total black dots quantity should be less than 10 per square meter

For any inquiries, please contact us at Lianyungang Chemsize International Trading Co., Ltd.

Chemsize Fused Silica

Lianyungang Chemsize International Trading Co., Ltd. is a leading manufacturer of Fused Silica grains and powders. Our Fused Silica materials are used in various industries such as Refractory, Investment Casting, Technical Ceramic, and EMC filler applications.

Our Fused Silica has a high fusion ratio (Amorphous SiO2 up to 99.9% min), low iron content (30ppm max), and low impurities, resulting in a material with low coefficient of thermal expansion, high resistance to thermal shock, and very low electrical conductivity. Our unique blending, sieving, and grinding system, combined with Malvern Laser Particle Size Analyzer, ensures that we always provide customers with the most suitable Fused Silica materials.

Chemsize Fused Silica is produced using a proprietary electric-arc fusion technique, resulting in pure Fused Silica with over 99.9% SiO2 content. It has a low coefficient of thermal expansion, high resistance to thermal shock, and excellent size integrity, meeting ISO-certified standards. Our Fused Silica is inert, chemically stable, and has extremely low conductivity.

Our Fused Silica products are specially engineered grains and powders designed for foundry, refractory, investment casting, and other specialized applications. They have an extremely low thermal expansion coefficient, consistent chemistry, and carefully controlled particle size distribution.

Chemsize Fused Silica is ideal for applications in various industries, including solar cell production, glass manufacturing, thermal resistance, investment casting, and more. Our products are available in different packaging options to suit customer preferences.

Explore the versatility and quality of Chemsize Fused Silica for your specific industry needs.

Chemsize Fused Silica

Welcome to Chemsize Fused Silica

Introducing Chemsize Fused Silica, a leading supplier of raw materials and machines for investment casting for over 30 years. Our Fused Silica flour offers numerous advantages:

• Enhanced particle shape for optimal primary slurry performance


• Decreased material consumption due to lower density


• Improved permeability and porosity for better shell quality


• Easier knock-out and shell removal process


• Consistent quality and sustainability from the world's largest Fused Silica production area


• Cost-effective pricing at US$0.56/kg FOB LIANYUNGANG PORT

Induction Furnace Lining Ramming Material

Our intermediate frequency furnace ramming material, also known as dry vibration material, offers high purity and composite additives for various applications in medium frequency furnaces.

Application Areas:

Widely used in coreless medium frequency furnaces for melting various metals and alloys.

FAQ:

1. Sample orders available with free shipping


2. Lead time: 3-5 days for samples, up to 15 days for orders


3. No MOQ limit for fused silica sand orders


4. Shipping via ***/FEDEX/DHL with prompt delivery

For more information, contact Lianyungang Chemsize International Trading Co., Ltd.