Investment Casting Refractory Ramming Mass with Low Thermal Expansion

• Certification: ISO
• Application: Rubber, Ceramic, Casting
• 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%
• Model NO.: 10-20mesh, 20-50, 30-50, 50-100, 200mesh 325mesh
• 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 high-quality fused silica sand and powder - Lianyungang Chemsize International Trading Co., Ltd. Offering Investment Casting Refractory Ramming Mass with Low Thermal Expansion.

Product Description

Discover our Grade A Fused Silica sand & powder for Investment Casting Refractory Ramming Mass with Low Thermal Expansion. 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 our Investment Casting Refractory Ramming Mass with Low Thermal Expansion. Ideal for Induction Furnace Lining and Ceramic Welding Hot Repairs.

		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 Feature:

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

Applications:

Fused Silica is 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, etc.

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

Company name: 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 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 sources in 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 processed into fused silica lump, sand, and powder based on customer requirements.

Detailed Photos

Fused Silica high clear Pictures: Investment Casting Refractory Ramming Mass with Low Thermal Expansion for superior performance.

Packaging & Shipping

Fused Silica Package and Delivery: 25kg Net Plastic Woven Bag, Palletized for convenience. Ideal for Investment Casting Refractory Ramming Mass with Low Thermal Expansion.

Lianyungang Chemsize offers Investment Casting Refractory Ramming Mass with Low Thermal Expansion. Ideal for various applications like induction furnace lining and ceramic welding repairs.

Fused Silica Product Description

Fused Silica Making Process

Fused Silica is produced using high-purity crystal silica from China Donghai-Xinyi. It is electrically fused at temperatures of 1800-2000ºC to create amorphous Silicon dioxide. The material is then engineered into various forms such as lumps, cullet, ingots, sand, grain, granular, and powder flour. These forms are specifically 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 strings, plastic lines, carbon, wood, metal, or other contaminants.


• Only conditional black dots are allowed; all other color dots are prohibited.


• Black spot diameter should not exceed 2mm.


• Total black dots quantity should be less than 10 per square meter when opening the big bag.

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

Chemsize Fused Silica Products

Welcome to Chemsize Fused Silica Products

Chemsize, a leading manufacturer of Fused Silica grains and powders, offers high-quality materials for various industries such as Refractory, Investment Casting, Technical Ceramic, and EMC fillers. Our Fused Silica materials are known for their exceptional purity, low thermal expansion, and excellent thermal shock resistance.

Key Features:

• Amorphous SiO2 content up to 99.9% minimum


• Low iron content (30ppm max) and minimal impurities


• Low coefficient of thermal expansion


• High resistance to thermal shock


• Extremely low electrical conductivity

Our proprietary electric-arc fusion technique ensures the production of Fused Silica with over 99.9% SiO2 purity. This inert material offers excellent chemical stability and meets ISO-certified standards. Chemsize Fused Silica is specially engineered for foundry, refractory, investment casting, and other specialized applications.

Applications:

• Solar cell crucibles in the photo-voltaic industry


• Rollers, castables, mortars, and forming tools in the glass industry


• Technical ceramic production in the thermal resistance industry


• Ceramic slurry for investment casting

Additional Products:

• Fused Silica precast shapes


• Fused Silica ramming mix for coreless induction furnaces


• Fused Silica for resin fillers, EMC fillers, and powder coating

Chemsize Fused Silica is ideal for investment casting applications, offering volume stability and tight tolerance castings. Our standard packaging includes 25kg bags, 48 bags per pallet, or jumbo bags with a net weight of 1200kgs. Customized bulk bag shipments are available upon request.

Investment Casting Grade:

Our Investment Casting grade Fused Silica is perfect for precision casting in industries like automotive, aerospace, medical, and more.

Contact us at Lianyungang Chemsize International Trading Co., Ltd. for premium Fused Silica products tailored to your specific needs.

Introducing Chemsize Fused Silica

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

• Better particle shape for primary slurry


• Decreased material consumption due to lower density


• Increased permeability and porosity for improved shell quality


• Easier knock-out and shell removal


• Consistent quality and sustainability


• Competitive pricing at US$0.56/kg FOB LIANYUNGANG PORT

Application Areas:

Our Fused Silica is ideal for use in induction furnace lining ramming material, offering high purity and efficient performance in various applications.

FAQ:

Q1: Can I have a sample order for fused silica products?

A: Yes, we provide free samples by ***/FEDEX/DHL. Mixed samples are acceptable.

Q2: What is the lead time?

A: Samples are sent within 3-5 days. Orders under 100mt are delivered within 15 days.

Q3: Is there a MOQ for fused silica sand?

A: No, but lower quantities may result in higher average costs.

Q4: How are goods shipped and what is the delivery time?

A: Shipping methods vary, and delivery times depend on the location.

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