::Gontermann peipers:Cast Steel Roll:

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16th September 2010

Gontermann to increase capacity

15th September 2010

Gontermann-Peipers seeks FMC nod for multi-commodity exchange

We have found GPIL to be an excellent choice for steels where chipping and cracking have not been a problem. It has worked well in applications on thinner ...

Cast Steel Rolls are available in a wide of chemical compositions varying from Hypo Eutectoid to Hyper Eutectoid Steels. Alloying combinations of different elements like Cr, Ni, and Mo are normally used to achieve the desired physical and mechanical properties.

In view of the demanding end use requirements these rolls cannot be used in an as cast condition when a coarse grained pearlitic structure with cementite and ferrite in a continiuous network is normally obtained. The rolls are subjected to specially designed heat treatment cycles to arrive at the optimum micro structural configuration with fine pearlite and uniformly distributed suitable for the final application.

Chemical Composition Proximate Chemical Composition [ in %- wt ]

	Element	%C	%Si	%Mn	%P	%S	%Cr	%Ni	%Mo
Steel	Min	0.50	0.30	0.70	0.04	0.04	0.80	1.50	0.20
	Max	1.95	0.90	1.40	max	max	2.00	max	0.60

Mechanical properties Mechanical Properties [1 MPa = 1 N/mm² (=0.1 kgf / mm² ) ]

	Element	Tensile Strength of Journal (MPa)	Bending Strength of Journal (MPa)	Barrel Hardness in ShC
Steel	min	600	900	30
	max	1000	1500	55

Hardness in Depth [SH C]

Physical properties Physical properties

physical properties

Adequate strength and rigidity
Good thermal conductivity
Good wear resistance
Good roll bite properties

Quality	Usage Area	Barrel Dia(mm)	Barrel Length (mm)	Total Length (mm)	Weight
Steel	Roughing/ Inter/ Finishing	1500(max)	2700 (max)	7000 (max)	30.0 MT (max)

Alloy Cast Steel Rolls are used primarily in Roughing and Intermediate Stands where the rolls normally encounter high mill stresses and the highest stock temperatures.