Foundry grade chromite sand as casting sand in cores and moulds in steel and iron foundries

Product Description

Foundry chromite sand is a natural process products of chromite through the broken screen classification, chrome ore, its main chemical composition of cr2o3, this kind of sand heated volume stability, high thermal conductivity, when in contact information with the molten metal, not only has good resistance to basic slag, not with ferric oxide and other chemical reactions, and itself has the characteristics of the solid phase sintering, can be a very good prevent the infiltration of molten metal, avoid to touch sand defects, suitable for all kinds of stainless steel, alloy steel and carbon steel gradually shape the original sand core and coating.

 

 

Advantage

 1. With excellent chilling characteristics, this characteristic does not reduce the thermal cracking, but can affect the temperature gradient, promote directional solidification without the use of cold iron.

2. Chromite is inert and does not react with other metal oxides. It is not wetted by manganese steel water. Chromite can be successfully used in manganese steel castings.

3. Linear expansion is small, and linear expansion is a factor that may cause sand inclusion in castings, so it may be used to mix wet sand mold for large castings.

 

Physical & Chemical

       

Chemistry	Index	Physics	Index
Cr2O3	≥46.0%	Bulk Density	2.5-3g/cm³
SiO2	≤1.0%	PH Value	7-9
Fe2O3	≤26.5%	Cr/Fe	1.55:1
CaO	≤0.30%	Filling Density	2.6 g/cm³
MgO	≤10%	Percent Moisture	≤0.1
AI2O3	≤15.5%	The sintered	1600°C
P	≤0.003%	Sintering Temperature	2180°C
C	≤0.003%	Melting Point	>1800°C
Regular size
AFS 25-35 AFS25-30 AFS30-35 AFS35-40 AFS40-45 AFS45-50 AFS50-55 AFS55-60 AFS60-65

 

Production

 Step1: chrome ore raw material is processed by water washing.

Step2, drying raw materials to remove water;

Step3, drying raw materials into the vibrating screen, screening out the size of the customer needs;

Step4, the size of the sieve for magnetic separation, the purpose of iron and silicon removal. After magnetic separation, the chromium content reached more than 46% and the silicon content was less than 1%.

Step5: package the finished product.

 

Company Information

Henan sicheng Abrasives Tech Co.,ltd. was established in 2009. It covers the area of 10 years. With updated new equipment, our factory can produce Foundry chromite sand 15,000 tons per year,  It is one of the high grade abrasive grains production base in China.

We have our own individual laboratory, the testing method for particle size is laser measuring method. From raw material choosing and purchasing, production processes, to market & sales, we all have very high standards. Which makes our products very popular among Japan, Korea, Southeast Asia, Middle East and European countries.

 

 

FAQ

 Q: Are you trading company or manufacturer ?

A: We are factory.

Q: How long is your delivery time?

A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.