Foundry moulding sand Chrome sand AFS 40/45

Foundry moulding sand Chrome sand AFS 40/45

Foundry moulding sand Chrome sand AFS 40/45


Negotiable Min Order Quantity Unit

Required Quantity
Place of Origin
South Africa
Brand name
Sicheng Abrasives
Payment Terms
L/C,T/T
Production method
OEM
Shipping / Lead Time
Negotiable / Negotiable
Keyword
chromite, chromite sand, chromite sand afs45-50, chromite sand afs 40/45
Category
Other Minerals & Metallurgy Products

Henan Sicheng Abrasives Tech Co.,Ltd

Membership
BIZ
Country / Year Established
China China / 2010
Business type
Manufacturer
Verified Certificate

6

DUNS

Product name Foundry moulding sand Chrome sand AFS 40/45 Certification -
Category Other Minerals & Metallurgy Products Material CHROMITE SAND
Keyword chromite , chromite sand , chromite sand afs45-50 , chromite sand afs 40/45 Unit Size 90.0 * 90.0 * 70.0 cm
Brand name Sicheng Abrasives Unit Weigh 1000 kg
origin South Africa Stock 5000
Supply type OEM HS code 261000

Product Information

Foundry moulding sand Chrome sand AFS 40/45 

 

Foundry moulding sand Chrome sand AFS 40/45  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 Foundry moulding sand Chrome sand AFS 40/45 :

a)      Chemicals

Cr2O3

≥ 46%

SiO2

≤ 1.0%

FeO

≤ 26.5%

CrFe

≥1.51

MgO

≤ 10%

High

≤ 0.3%

Al2O3

≤ 15.5%

P

≤30 ppm

S

≤30 ppm

Cr/Fe

≥ 1.551

 

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 Rate1000℃

0.6%

Acid Demand Value (ADV)

≤ 5ML

Turbidity(JTU)

≤ 110

Soil content

≤ 0.1%

Moisture

≤ 0.1%

 

Particle distribution of Foundry moulding sand Chrome sand AFS 40/45 

+30mesh(600um)

1.60

+40mesh(425um)

22.00

+50mesh(300um)

34.50

+70mesh(212um)

32.90

+100mesh(150um)

9.00

Grain Fineness(GFN)

AFS 43.47

 

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 Foundry moulding sand Chrome sand AFS 40/45 :


 

Package of Foundry moulding sand Chrome sand AFS 40/45 :


 

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

 

Product Info Attached File

chromite sand application 800.jpg

B2B Trade

Price (FOB) Negotiable transportation Ocean Shipping
MOQ Negotiable Leadtime Negotiable
Payment Options L/C,T/T Shipping time Negotiable

Henan Sicheng Abrasives Tech Co.,Ltd

Country / Year Established
China China / 2010
Membership
BIZ
Business type
Manufacturer

6

DUNS

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.

 

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