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Product Description
It is used in the roughing stands of round and sections, especially the BD2 mills for rail & beams.
Compared with other nodular iron rolls, NCC rolls have unique material and heat treatment process ensuring they are good enough to replace the traditional cast steel rolls but with a better life.
We control the carbide at a very low level (less than 5%) by reducing the chrome down to 0.3%, raising the silicon and applying isothermal quenching to make the carbide solid solution into the matrix.
Meanwhile, we can achieve a matrix of tempered sorbite/bainite by applying heat treatment d increasing nickel. This type of matrix has much better performance than the pearlite on the resistance of wear, fire crack and impact, especially the excellent red hardness thanks to the molybdenum.
Chemical Composition
|
Grade |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Mo |
|
NCC I |
3.00-3.40 |
2.00-2.50 |
0.80-1.00 |
≤0.10 |
≤0.030 |
≤0.15 |
2.00-3.00 |
0.40-0.70 |
|
NCC II |
3.00-3.40 |
1.50-2.00 |
0.80-1.00 |
≤0.10 |
≤0.030 |
≤0.15 |
2.50-4.50 |
0.50-1.00 |
Mechanical Properties
|
Tensile Strength (kg/mm²） |
≥520 |
|
Bending Strength (kg/mm²） |
970-1380 |
|
Elongation (%) |
0.2-0.5 |
Metallography Organism
Production Process
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
Seaworthy plywood packaged on steel pallets or as customer's request.
Our Service
1) Providing professional proposal of suitable production line as per customers' invest and capacity requirement
2) Providing turn-key service of designing, manufacturing, installation and commissioning for the whole production lines to meet customers requirement
3) Providing foundation layout and arrangement diagram for your plant
4) Providing technical support. We will send various technical staff to the site until the final products are meet to customers' own request.
5) Good after-sales service will be provided. Our long-term technical service will be provided if you want to adjust the production line, develop new products or improve the equipment.
6) Quality warranty will be promised.
