Original: China

Material Type: Others

Main Color: Black

Surface Finish:

Reference Price: US$ 420 / Ton

Shipping Port: Lianyungang

Minimum Order: 1 M2

Packings: 1MT/BIG BAG

Payment Methods: T/T, L/C

Packing Details: 1MT/BIG BAG

Stock Status:

Delivery Period: 2000Tons

Product Introduction of Water washed chromite sand for foundry

Foundry Chromite sand AFS35-40 is widely used in investment casting, no-baked sand casting, lost foam casting,etc. The best chromite sand for foundry is from good quality mine in South Africa. The Cr2O3 purity of SA chrome ore is min 46. Comparing with refractory grade chromite sand, the foundry chromite sand should be high Cr2O3 content and with good particle distribution. Foundry chromite sand will help foundries to get a smooth finish surface of steel castings.

Typical chemical analysis of Water washed chromite sand for foundry
CHEMICAL COMPOSITION
Cr2O3 46.5
SiO2 0.4
FeO 26.3
CaO 0.2
MgO 9.8
AL2O3 15.2
P 0.001
S 0.001
Moisture (105°C) 0.01
Cr/Fe 1.55:1



Typical physical properties of Water washed chromite sand for foundry
Hardness: Mohs:5.5-6
Melting Point: Sublimes at 2180 °C
Sintering point: 1800°C
Specific Gravity: 4.0-4.8 g/cm3
Bulk density(LPD): 2.5-3 g/cm3
Turbidity (JTU) 110
Color: Black
PH Value 7.3
Percentage of free acid present in the sand: 0
The amount of the acid: ≤2ML
Percentage of soil: ≤0.1
Percentage of Moisture: ≤0.1


Product Feature and Applications of Water washed chromite sand for foundry

1. Good resistance to alkaline slag and does not react with iron oxide.
In practical applications, chrome ore can avoid thermal chemical sand sticking on surface of casting. Thus it will save cost on further surface finish work.
2. High Wetting angle to molten steel liquid.
That makes good wetability resistance to steel liquid. Chromite sand won't get react with molten steel. There won't be chemical sand sticking for casting steels.
3. High thermal conductivity and thermal storage coefficient
It is several times greater than that of silica sand. That property of chromite sand can
increase the cooling speed of melted steel liquid. On one hand, it prevent chemical reaction in high temperature. So casting will get off from the shell. It is easier to clean the casting surface.
On the other hand, it also increase the solidification process of molten steel. It will make less shrinkage and porosity of steel castings.
4. High refractoriness
The resistance to high temperature will help chromite sand stable to molten steel.
5. Low thermal expansion.
That property of foundry chromite sand will help to decrease the unshaped defects on castings.
6. Even particle sieve distribution. The chromite sand grit size is get strictly according to AFS standard. By multi cleaning process, the chromite sand from us is with low turbidity. That will make the consistency of chromite quality.
7. Low SiO2 content. It will help to prevent heavy leather defects on castings.


Applications of Water washed chromite sand for foundry

Investment casting.
Shell molding for precise casting such as water glass shell molding.
Lost foam casting.
Sand casting.
Resin coated casting.



FAQ:
Q: Where are you located?
A: Our factory is located in a tariff-free Zone at Lianyungang port. So it will be convience to export.
Q: What is your main market?
A: Our main market is local China and Asia-Pacific regions.
Q: What is the difference between your chromite sand and Original South Africa Chromite sand?
A: In our factory, we take production processes on original South Africa such as washing, magnetic removing, and sieving. So it is cleaner with fewer impurities, less magnetic content. The cleanness of chromite from us is just proper for the foundry industry. In the meantime, we will get a precise AFS size and make customized particle size distribution to the requirement.
Q: Do you have a limit of MOQ?
A: No. We don't have a limit of MOQ, but for a small quantity, the transportation cost would be high.
Q: Can you provide free samples?
A: Yes, free samples within 25 kgs are available. You only have to bear the express cost.
Q: What is the delivery time for one container?
A: Generally the lead time of FCL is 7-10 days. A bigger quantity will get a longer delivery time.
Q: What is the HS code of Chromite sand?
A: The chromite sand HS code is 2610000000.
Q: Do you get MSDS of chromite sand?
A: Yes. You could download it from our website or get it from our sales team.

Supplier Location: China

Contact Person: Pan Chen

Mobile: 0086 13526538098

Email: Send Email

Zhengzhou Haixu Abrasives Co., Ltd., founded in 1999, Owning 20 years of production experience and an experienced sales team, specified in South Africa chromite sand production, including casting, met ..... More »