Fused Quartz Flour for Precision Casting

• Customization: Available
• Certification: ISO
• Application: Rubber, Ceramic, Casting
• Model NO.: 325mesh 400mesh 600mesh 800mesh 1250mesh 2000mesh
• 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%
• Thermal Conductivity: 1.3W/M*K
• Dielectric Constant: 3.8(1MHz,20 )
• Electrical Conductivity: 3us/Cm
• 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

Lianyungang Chemsize International Trading Co., Ltd. offers top-quality Fused Quartz Flour for Precision Casting. Experience the best service and quality for your casting needs!

Product Description

Discover our Grade A Fused Silica sand & powder for Precision Casting. Made by Lianyungang Chemsize International Trading Co., Ltd. Ideal for high-quality casting 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%

Fused Quartz Flour for Precision Casting with thermal conductivity of 1.3w/m*k(20 ºC), dielectric constant of 3.8(1MHz,20), and electrical conductivity of 3 μs/cm. Ideal for precision casting 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:

• High purity amorphous powder


• Lowest coefficient of thermal expansion


• High resistance to thermal shock


• Low thermal conductivity


• Excellent electrical insulation and lower radiation

Applications:

• Thermal ceramic industry


• Refractory industry


• Investment casting


• EMC applications


• Solar crucible manufacturing


• Quartz marble production


• Powder coating


• Epoxy molding compound


• Epoxy potting compound


• Electrical insulation


• Refractories and ceramics


• Filler for liquid type sealants


• Various types of resin fillers


• Resin substrates


• Precision casting


• Coating and painting


• Artificial marble production

Available Sizes:

0-1mm, 1-3mm, 3-5mm, 0.2-0.5mm, 0.1-0.5mm, 0.212-0.425mm, 0.125-0.212mm, -0.044mm, -0.045mm, 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 customer's special requirement.

Company name: Lianyungang Chemsize International Trading Co., Ltd.

Third Party Test Report

Production Process

Fused Silica Production Process

Fused silica is high purity quartz sand that has been melted to form glass. Its high volume stability, low volumetric expansion, and high purity make fused silica a versatile material for refractory applications, such as aluminum launders.

Raw Material

We strictly choose high purity silica sand (SiO2 > 99%) from Donghai/Xinyi as our raw material.

Manufacturing Process

The silica sand is melted at high temperatures (2000-2300 ºC) to form amorphous silicon dioxide glassy ingot, which is then cooled. The products are further processed into fused silica lump, sand, and powder based on customer requirements.

Company Information

Company Name: Lianyungang Chemsize International Trading Co., Ltd.

Detailed Photos

Fused Silica high clear Pictures for Precision Casting by Lianyungang Chemsize. Top-quality Quartz Flour for casting with ultrafine grains.

Packaging & Shipping

Fused Silica Package and Delivery: 25kg net plastic woven bags on pallets.

Explore our Fused Quartz Flour for Precision Casting, manufactured at Lianyungang Chemsize International Trading Co., Ltd. High-quality, ultra-fine quartz grains for top-grade precision casting sand.

Fused Silica Product Description

Welcome to Lianyungang Chemsize International Trading Co., Ltd.

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 resulting material is specially engineered into lumps, cullet, ingots, sand, grain, granular, and powder flour forms. These are designed for various applications such as PV fused silica crucible, thermal ceramic, refractory, EMC investment casting ceramic shell, and more.

Fused Silica Sand Appearance and Specifications:

• Must not contain any unfused parts.


• Should be free of foreign materials like string, plastic line, carbon, wood, metal, or other contaminants.


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


• 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 feel free to contact us!

Chemsize Fused Silica

Chemsize is a leading manufacturer of Fused Silica grains and powders, essential raw materials for industries such as Refractory, Investment Casting, Technical Ceramic, and EMC fillers. Our Fused Silica materials have received excellent feedback from all our customers.

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

At Chemsize, we produce our Fused Silica using a proprietary electric-arc fusion technique, resulting in the purest quality Fused Silica in China. With over 99.9% SiO2 content, our Fused Silica is amorphous, with a low coefficient of thermal expansion, high thermal shock resistance, and excellent size integrity, meeting ISO-certified standards. Our Fused Silica is inert, offering exceptional chemical stability and extremely low conductivity.

Chemsize Fused Silica is specially engineered for foundry, refractory, investment casting, and other specialized applications. With an extremely low thermal expansion coefficient, consistent chemistry, and controlled particle size distribution, our Fused Silica products are designed to meet the highest industry standards.

Our standard packaging includes 25kg bags, 48 bags per pallet, or jumbo bags with a net weight of 1200kgs. We also offer tailored shipments for customers requiring bulk bags of varying sizes.

Fused Silica Applications:

• Crucibles for solar cell production 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 industry

Our Fused Silica is versatile, catering to a wide range of applications including investment casting, glass furnace repairs, steel melting, and more. Trust Chemsize Fused Silica for superior quality and performance in your industrial processes.

Introducing Chemsize Fused Silica

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

• Improved particle shape for primary slurry


• Reduced material consumption due to lower density


• Enhanced permeability and porosity for better shell quality


• Easier knock-out and shell removal process


• Consistent quality and sustainable sourcing


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

Application Areas:

Our Fused Silica is ideal for use in induction furnace lining ramming material, intermediate frequency furnace lining, and dry vibration material. It is suitable for melting various metals including cast iron, steel, stainless steel, aluminum, copper, and bronze alloys.

FAQ:

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

A: Yes, we offer free samples shipped by ***/FEDEX/DHL.

Q2: What is the lead time for samples and bulk orders?

A: Samples can be sent within 3-5 days, while bulk orders typically ship within 15 days for quantities up to 100mt.

Q3: Is there a minimum order quantity for fused silica sand?

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

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

A: Goods are shipped promptly, and delivery times vary based on location.