ALLOY INDEFINITE CHILLED CAST IRON ROLLS

Alloy Indefinite Chilled Cast Iron is a material between chill cast iron and grey cast iron. The sizes, shapes and distributions of graphite and carbide are controlled by the chilling effect and the contents of alloy elements. The addition of alloy elements such as Manganese, Nickel, Chromium, and Molybdenum changes the matrix microstructure from pearlite, bainite to martensite.

Application

Intermediate stand rolls for bar mills
Finishing stands rolls for bar mills
Wire and Section mill rolls

Materal Grades

MATERIAL	GRADE	CHEMISTRY									BARREL HARDNESS (HSC)
MATERIAL	GRADE	C	Si	Mn	Cr	Ni	Mo	V	W	Nb	BARREL HARDNESS (HSC)
Indefinite Chilled (IC)	IC III	2.90-3.60	0.60-1.20	0.40-1.20	0.70-1.20	2.01-3.00	0.20-1.00	/	/	/	65-75
	IC IV	2.90-3.60	0.60-1.50	0.40-1.20	1.00-2.00	3.01-4.00	0.20-1.00	/	/	/	70-80
	IC V	2.90-3.60	0.60-1.50	0.40-1.20	1.00-2.00	3.01-4.80	0.20-2.00	0.20-2.00	0.00-2.00	0.00-2.00	75-80

TYPICAL PHYSICAL PROPERTIES

TYPICAL
PHYSICAL PROPERTIES

Material

Neck Hardness

(HSC)

Tensile Strength
(N/mm2)

Bending Strength
(N/mm2)

Elongation （%）

Unevenness of

Barrel Surface Hardness

(HSC)

30-45

400-500

700-1000

0.2-0.

＜5

HARDNESS
DISTRIBUTION

Microstructure
100x

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Features

of ALLOY INDEFINITE CHILLED CAST IRON ROLLS

Stable Surface Hardness
TSR choose centrifugal casting for IC rolls. The chilled structure ensures gradual hardness transition and consistent performance throughout service life.
Good Wear Resistance
Alloy carbides provide reliable wear resistance under medium rolling loads.
Balanced Strength and Toughness
Tough core structure reduces the risk of spalling and cracking during rolling.
Good Thermal Fatigue Resistance
Stable microstructure minimizes thermal stress and surface crack propagation.

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

TSR ROLLS

High quality Mill Rolls Supplier of China

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.

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.

Service and Support

We believe that genuine cooperation goes far beyond product delivery. Our professional team is always ready to provide full-cycle, dedicated support, characterized by rapid response, solid technical expertise, and a meticulous service mindset. Meanwhile, we conduct regular visits to customers worldwide to offer on-site technical support.

TSR listens carefully to every requirement and is fully committed to resolving every challenge, ensuring that every customer enjoys a reliable, worry-free, and trustworthy partnership.