AFS25-30 AFS25-35 Chromite Sand/Chrome Ore Sand/Cr-Sand
AFS25-30 AFS25-35 Chromite Sand/Chrome Ore Sand/Cr-Sand
Negotiable Min Order Quantity Unit
- Required Quantity
-
- Place of Origin
- China
- Brand name
- Sicheng Abrasives
- Payment Terms
- L/C,T/T
- Production method
- OEM
- Shipping / Lead Time
- Negotiable / Negotiable
- Keyword
- chromite, chromite sand, chrome ore sand, cr-sand
- Category
- Abrasives
Henan Sicheng Abrasives Tech Co.,Ltd
- Verified Certificate
-
6
Product name | AFS25-30 AFS25-35 Chromite Sand/Chrome Ore Sand/Cr-Sand | Certification | - |
---|---|---|---|
Category | Abrasives | Ingredients | - |
Keyword | chromite , chromite sand , chrome ore sand , cr-sand | Unit Size | 90.0 * 90.0 * 70.0 cm |
Brand name | Sicheng Abrasives | Unit Weigh | 1000 kg |
origin | China | Stock | 5000 |
Supply type | OEM | HS code | 261000 |
Product Information
AFS25-30 AFS25-35 Chromite Sand/Chrome Ore Sand/Cr-Sand
AFS25-30 AFS25-35 Chromite Sand/Chrome Ore Sand/Cr-Sand comes from chromite ore in nature. Chromite sand has a Mohs hardness of 5.5-6.5 and a specific gravity of 4.3-4.8g/cm3. Natural chromite ore is composed of two parts: spinel and gangue, which are usually associated. Spinel is Mg • FeO Al Cr2O3, gangue is serpentinite H4 Fe • Mg3 Si2O9 (hydrated silicon magnesium), and there are also small amounts of magnesium olivine, quartz, green pyroxene and other forms in chromite. The quartz (SiO2) in it is harmful to the chromite sand used in casting and needs to be removed through processing methods.
Characteristics:
(1) Chromite sand for steel casting has excellent quenching properties, which do not reduce hot cracking but can affect temperature gradients and promote directional solidification without the need for cold iron. This characteristic is important for large thick walled steel castings. Chromite sand can promote sequential solidification and reduce porosity defects.
(2) Chromite ore sand is inert and therefore does not react with other metal oxides. It is not wetted by manganese steel water. Manganese steel castings can successfully use chromium iron ore sand. If the mold is coated normally and the silicon oxide content is low, there is no iron olivine reaction.
(3) The thermal expansion of chromite sand is small. Linear expansion is a factor that may cause sand inclusion in castings. Therefore, it may be used to mix wet sand molds for large castings.
(4) Chromite sand is sintered through fine-grained sintering, accompanied by quenching and high residual heat strength, eliminating metal penetration and reducing the risk of chemical sand sticking.
(5) Chrome ore sand has strong compatibility and can be used together with various binders, while also belonging to a certain particle size range. Chromite sand can also be mixed with silica sand for use.
(6) The silicon content of chromite sand is low, and cleaning the casting sand can reduce the intake of silicon dust, which will not have a health impact on the human body.
Technical Index of AFS25-30 AFS25-35 Chromite Sand/Chrome Ore Sand/Cr-Sand:
a) Chemicals
Cr2O3 |
≥ 46% |
SiO2 |
≤ 1.0% |
FeO |
≤ 26.5% |
Cr:Fe |
≥1.5:1 |
MgO |
≤ 10% |
CaO |
≤ 0.3% |
Al2O3 |
≤ 15.5% |
P |
≤30 ppm |
S |
≤30 ppm |
Cr/Fe |
≥ 1.55:1 |
b) Physical index:
Mohs Hardness |
5.5-6 |
Melting Point |
2180 ℃ |
Sintering Point |
>1800℃ |
Specific Gravity |
4.0-4.8 g/cm3 |
Bulk Density (LPD) |
2.5-3 g/cm3 |
Color |
Black |
PH Value |
7-9 |
Thermal conductivity |
0.63 W/M·K |
Thermal Expansion Rate(1000℃) |
0.6% |
Acid Demand Value (ADV) |
≤ 5ML |
Turbidity(JTU) |
≤ 110 |
Soil content |
≤ 0.1% |
Moisture |
≤ 0.1% |
Applications:
1. Large scale thick walled casting: Chromite sand combined with sand casting, furan resin self hardening sand, water glass self hardening sand and other processes are used for large volume and weight cast iron and steel castings. It can cool the castings in a predetermined order, which is conducive to improving the internal tightness of the castings and enhancing their strength. In addition, for the process of using silica sand, chromite ore sand can be used as surface sand instead of silica sand in key areas where porosity and veins are prone to occur, which can effectively prevent casting defects such as cracks and porosity.
2. Lost foam casting. In lost foam casting, using chromite sand can prevent defects such as sand inclusion and sticking caused by quartz sand casting. Used for manufacturing castings such as valves and impellers made of high chromium cast steel and high manganese steel materials.
3. Shell casting: Chromite sand can be used as a core sand material for complex components in shell casting, making sand cores. Used for producing high-precision, smooth surface 304316 stainless steel castings and carbon steel precision castings. It can effectively prevent the problem of sand sticking in the inner cavity of castings.
4. Sand casting: Chromite sand can also be used for sand casting, such as sand casting, water glass self hardening sand casting, etc., to produce various large, medium, and small parts, such as pump bodies, pipelines, valves, etc.
Production of AFS25-30 AFS25-35 Chromite Sand/Chrome Ore Sand/Cr-Sand:
Package of AFS25-30 AFS25-35 Chromite Sand/Chrome Ore Sand/Cr-Sand:
AFS Fineness |
Mesh |
Grain Size |
AFS 25-30 |
20-40# |
0.45-0.85mm |
AFS 30-35 |
20-50# |
0.3-0.85mm |
AFS 30-40 |
20-60# |
0.25-0.85mm |
AFS 35-40 |
30-70# |
0.2-0.6mm |
AFS 40-45 |
40-70# |
0.2-0.4mm |
AFS 45-50/AFS45-55 |
50-100# |
0.15-0.3mm |
AFS 60-65 |
70-140# |
0.1-0.2mm |
/ |
200#-0 |
0-75um |
/ |
325#-0 |
0-45um |
B2B Trade
Price (FOB) | Negotiable | transportation | Ocean Shipping |
---|---|---|---|
MOQ | Negotiable | Leadtime | Negotiable |
Payment Options | L/C,T/T | Shipping time | Negotiable |
- President
- Feng Lingzhou
- Address
- ROOM 1409, #1 BUILDING, LVDI CENTRE, DAXUE SOUTH ROAD, ZHENGZHOU, CHINA
- Product Category
- Abrasives
- Year Established
- 2010
- No. of Total Employees
- 51-100
- Company introduction
-
Henan Sicheng Abrasives Tech Co., Ltd, is a leading exportor and manufacturer of chromite sand & Chromite powder from China.
- Main Product