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Product Description
The shell material of pearlitic nodular cast iron rolls consists of spherical graphite and carbides in a pearlitic matrix.We can obtain Chromium alloyed pearlitic nodular iron rolls if we control suitable Chromium content. Rolls of this type which are alloyed with Chromium to achieve a deeper penetration of carbides is belong to pearlitic nodular iron rolls. This kind of rolls has a lower hardness drop than the standard nodular iron rolls which resulting in better wear resistance, especially for rolls with deep grooves.
SGP rolls are widely used in the roughing stands and intermediate stands of various rolling mills. Usually, we make this type of roll by static cast and centrifugal cast. We recommend using centrifugal cast rolls for better performance when the groove in the roll body is not too deep. With more alloy added in, we can get a microstructure consisting of spheroidal graphite, pearlite and primary carbide type M3C up to 30%. Meanwhile, the core of the roll still keeps very strong with a great amount of spheroidal graphite in the matrix of ferrite.When the groove in the roll body is very deep, we recommend using rolls static cast with groove to achieve a low hardness drop between the body surface and bottom of the groove.
Chemical Composition
|
|
Grade |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Mo |
Mg |
|
|
Centrifugal |
Static |
SGP I |
2.90-3.60 |
1.40-2.20 |
0.40-1.00 |
≤0.15 |
≤0.030 |
0.10-0.60 |
1.50-2.00 |
0.20-0.80 |
≥0.04 |
|
SGP II |
2.90-3.60 |
1.40-2.20 |
0.40-1.00 |
≤0.15 |
≤0.030 |
0.20-1.00 |
2.01-2.50 |
0.20-0.80 |
≥0.04 |
||
|
SGP III |
2.90-3.60 |
1.40-2.20 |
0.40-1.00 |
≤0.15 |
≤0.030 |
0.20-1.20 |
2.51-3.00 |
0.20-0.80 |
≥0.04 |
||
|
CORE |
2.90-3.70 |
1.40-2.60 |
0.50-1.00 |
≤0.15 |
≤0.030 |
≤0.08 |
≤0.15 |
≤0.50 |
≥0.04 |
||
Mechanical Properties
|
Tensile Strength (kg/mm²） |
450-600 |
|
Bending Strength (kg/mm²） |
800-1000 |
|
Elongation (%) |
0.2-0.5 |
Metallography Organism
Company Information
Our company provides an extensive range of top-quality consumables and equipments for steel mills, cement mills, mining and foundry industry which covers rolling mill rolls, tube sleeves, welding pipe roller, all kinds of castings and forgings, wear-resistant parts as well as rolling mill parts. By means of rich experiance and expertise in metallurgical and mechanical field, top-quality products, complete specifications, reasonable price, punctual delivery as well as considerate pre-sale and after-sale service. Our products have been exported to 20 countries and regions including Southeast Asia, Europe, North Amecia, South America and Middle East and enjoyed high reputation from home and aboard. To provide top-quality products is our goal; to provide satisfactory service to customers is our responsibility. We are willing to work with you and make concerted efforts together to creat brilliance!
Work shop
We have a series of advanced machining equipment that meet the production needs, including centrifugal machine, intermediate frequency induction furnace, heat treatment furnace, CNC external grinding machine, CNC grinding machine, vertical gantry milling machine, turning lathe, and sawing machine.
Package & Shipping
Our Service
As customers required, we provide tailored design proposal for production line that is suitable for customers' financial, technical and production needs.
High performace rolling mill stands and auxiliary equipments/spare parts used in the rolling mill production line. (Such as roller box, gearbox reduction, coil laying head, vertical and side loops, flying shears, chopping shears and gripping shears, pinch roll machine and so on)
Devoted technical help and after-sale service.
Professional engineers available for overseas installation and maintenance.
