Cast Iron Roll,Work Rolls for The Rougher Stands of Hot Strip Mills

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Cast Iron Roll,Work Rolls for the Rougher Stands of Hot Strip Mills
Cast Iron Roll are mainly divided into three kinds as below
1)Infinite chilled casting iron roll
it works with fine intercrystalline graphite layer.Size, shape and distribution of graphite and carbide can be controlled through the chilling effect and alloy content.Because of the added alloy element such as manganese, chromium, nickel, molybdenum, matrix organization may vary from pearlite, bainite to martensite.Add a small amount of fine graphite exists, not only improve the roll spalling resistance and thermal crack resistance and wear resistance, but also cause the work layer of roller hardness dropping very small.The rolls are mostly used in bar and wire rolling, finishing mill, section mill etc
Chemical composition (%)

Code	C	Si	Mn	Cr	Ni	Mo	v
IC	2.90-3.60	0.60-1.20	0.40-1.20	0.60-1.20		0.20-0.60
IC?	2.90-3.60	0.60-1.20	0.40-1.20	0.70-1.20	0.50-1.00	0.20-0.60
IC?	2.90-3.60	0.60-1.20	0.40-1.20	0.70-1.20	1.01-2.00	0.20-0.60
IC?	2.90-3.60	0.60-1.20	0.40-1.20	0.70-1.20	2.01-3.00	0.20-1.00
IC?	2.90-3.60	0.60-1.50	0.40-1.20	1.00-2.00	3.01-4.80	0.20-1.00
IC?	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

Properties and application

code	Roll body hardness(HS)	Rm(Mpa)	size(mm)	Weight per piece(kg)	Use
IC	50-70	=160	ø 300~1000	500~30000	small and middle size medium and precision rolling machine for profile steel,bar,wire and narrow strip etc
IC?	55-72	=160
IC?	55-72	=160
IC?	65-78	=350
IC?	70-83	=350			thick steel plate and hot rolling steel mill ,work rolls and straightening rolls etc
IC?	77-85	=350

1.Alloys spheroidal graphite cast iron roll

This kind of roll character is spheroidal graphite, its properties are similar to infinite cold chilled rolls, but its strength is higher than the infinite cold chilled rolls.Generally adopts static casting.
Chemical composition(%)

code	C	Si	Mn	Cr	Ni	Mo	Mg
SG?	2.90-3.60	0.80-2.50	0.40-1.20	0.20-0.60	-	0.20-0.60	=0.04
SG?	2.90-3.60	0.80-2.50	0.40-1.20	0.20-0.60	0.50-1.00	0.20-0.80	=0.04
SG?	2.90-3.60	0.80-2.50	0.40-1.20	0.30-1.20	1.01-2.00	0.20-0.80	=0.04

Properties and application

Code	Roll body hardness(HS)	Rm(Mpa)	Flexural strength(Mpa)	size(mm)	weight(kg)	use
SG?	50-70	=320	500-700	ø300~1300	500~35000	precision rolling machine for profile steel,bar,wire and narrow strip;hot thin plate rolling machine etc
SG?	55-70	=320	500-700
SG?	60-70	=320	600-800

2.high chromium Centrifugal casting iron roll

It is high alloy roll, the base is bainite matrix and Chromium carbide, the core is spheroidal graphite cast iron roll
Chemical composition(%)

code	C	Si	Mn	Cr	Ni	Mo	V
HCr?	2.30-3.30	0.30-1.00	0.50-1.20	12.00-15.00	0.70-1.70	0.70-1.50	0.00-0.60
HCr?	2.30-3.30	0.30-1.00	0.50-1.20	15.01-18.00	0.70-1.70	0.70-1.50	0.00-0.60
HCr?	2.30-3.30	0.30-1.00	0.50-1.20	18.01-22.00	0.70-1.70	1.51-3.00	0.00-0.60

Properties and application

code	Roll body hardness(HS)	Rm(Mpa)	size(mm)	Weight per piece(kg)	use
HCr?	60~75	=350	ø400~1000	800~15000	Hot rolling steel strips vertical rolls,straightening rolls;thick plate work rolls,profile steel roller rings etc
HCr?	65~80	=350
HCr?	75~90	=350

Ted Machine, with over 10 years experience, is one of leading cast iron roll,work rolls for the rougher stands of hot strip mills manufacturers and suppliers in China. We have introduced advanced equipment and technology in our plant. Welcome to buy the customized and quality equipment from our factory.

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