ENHANCED INDEFINITE CHILLED ROLLS
The enhanced ICDP is developed based on the classic Indefinite Chill Double Poured Cast Iron.The microstructure consists of a bainitic / martensistic matrix with Fe3C and MC carbides homogeneously distributed and a certain amount of free graphite fine and also well distributed in the matrix.The rolls are double tempered to avoid retained Austenite and to obtain the right hardness level and the optimum residual stress level.
Application
- Finishing stand rolls (F4 – F7) of hot strip mills
- Steckel mill rolls
- Heavy Plate mill rolls
- Finishing stand rolls of section mills
Materal Grades
|
MATERIAL |
CHEMISTRY |
BARREL HARDNESS (HSC) |
||||||
|
C |
Si |
Mn |
Cr |
Ni |
Mo |
V+W+Ti+Nb |
||
|
EN-ICDP |
2.90-3.40 |
0.60-1.60 |
0.50-1.50 |
1.20-2.0 |
3.50-5.00 |
0.20-1.00 |
≤2.5 |
70 – 82 |
TYPICAL PHYSICAL PROPERTIES
|
Neck Hardness (HSC) |
Tensile Strength (N/mm2) |
Unevenness of Barrel Surface Hardness (HSC) |
Difference of Shell Thickness |
|
35-45 |
≥400 |
＜3 |
＜10 |
HARDNESS
DISTRIBUTION
Microstructure
100x
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Features
of ENHANCED ICDP Rolls
-
Optimized Microstructure for Controlled Wear
A bainitic or tempered martensitic matrix with finely dispersed alloy carbides and graphite phases ensures stable wear behavior under high rolling speed and contact stress. -
Improved Thermal Fatigue and Crack Resistance
The combined effect of graphite phases and a tougher matrix reduces thermal stress concentration, effectively limiting thermal crack initiation and propagation during cyclic heating and cooling. -
Stable Surface Evolution and Shape Control
Uniform hardness distribution and controlled surface development support consistent strip surface quality and reliable shape control in final rolling passes. -
Defined Applicability for Finishing Stands
Designed for finishing stands with high rolling speed, frequent thermal cycles, and stringent surface quality requirements, particularly in later finishing passes.
Packing Details
Seaworthy crates, wooden boxes or steel pallets
Production time
4-6months
Shipping
Sea freight, Land freight and Air freight
Warranty Time
Whole lifetime warrantee
Production Progress
A specialized production control system is applied throughout roll manufacturing, covering material preparation, casting/forging, heat treatment, machining, and inspection. Strict control of key processes ensures stable roll performance, consistent quality, and reliable delivery.
TSR is a professional supplier of mill rolls and related technical services. Backed by an expert team of PhDs specializing in materials science and metallurgy, TSR is committed to becoming a world-class provider of roll technology and services.
With over 20 years of dedicated experience, TSR has been supplying high-quality mill rolls and reliable technical support to steel producers worldwide. Our products are successfully applied on more than 100 rolling mill lines across 30+ countries and regions, including France, Spain, South Korea, Vietnam, India, Brazil, and Mexico.
PRODUCTION CAPACITY
At TSR, we believe that continuous improvement leads to perfection. We consistently upgrade our advanced CNC equipment to ensure excellence throughout the production process.
MELTING
EBT Arc furnace: 55T
LF Refining furnace: 55T
VD+VOD: 55T
IM frequency furnace (8 sets): 20T
CASTING
Horizontal Spin Casters
Ø 1,600 mm x 4,500 mm B.L.
Ø 1,400 mm x 3,000 mm B.L.
Ø 800 mm x 2,600 mm B.L.
HEAT TREATMENT
Electrical furnaces
18 sets – bogie type
7 sets – low-temperature
11 sets – high temperature
Differential Heat Treatment
Furnaceφ1600 mm x 2800 mm B.L.
Spray quenching machine
Max φ1800mm
MACHING
CNC Lathe: 32T
CNC Grinding machine50T
Turing and Boring machine: 63T
Boring machine
QUALITY CONTROL
The high-performance demands of today’s mills require reliable rolls that can remain in the production cycle longer than ever, while ensuring high-quality rolled products. TSR has built a consistent quality control system throughout the entire manufacturing process. Our aim is to supply customers with reliable rolls that deliver better performance, contributing to customer benefit, cost reduction and satisfaction.
Dimentional
Inspection
Microstructure
Inspection
Ultrasonic
Inspection
Lismar
Environmental friendly package
Low-carbon operation of each equipment, recycling of every piece of metal, and environmental optimization of each process — these are TSR’s solemn commitments to the Earth. Even the smallest details of our packaging reflect TSR’s responsible attitude toward environmental protection.
- Seaworthy steel pallets
- 100% recyclable materials
- Unpainted steel pallets
- Optimized packaging design to minimize material consumption
Service and Support
Trust and Worth
Our Clients
