Alloy Indefinite Chill Mill Roll

• Customization: Available
• Customized: Customized
• Condition: New
• Model NO.: IC mill roll
• Type: Steel Rolling Equipment
• Certification: ISO
• Casting Method: Static Cast
• Barrel Hardness: 60-85 Hsd
• Core Hardness: 35-45 Hsd
• Weight: ≤20 Tons
• Size: as Per Drawing
• Transport Package: Steel Rack
• Specification: ISO
• Trademark: CAMET
• Origin: China
• Production Capacity: 20000 Tons/Year

Product Description

Alloy Indefinite Chill Mill Roll

Properties
The mechanical properties are improved due to the presence of chilled surface strcture and the change of pinetree-like structure. The hardness and type of matrix of roll depend on the conditions of application. The roll produced with centrifugal method basically eliminates the presence of graphite in its working layer while the core is made of nodular cast iron, increasing as a result, both the wear-resistance and breaking strength.

 
Chemical Analysis

Designation of rolls	C	Si	Mn	P	S	Ni	Cr	Mo
NiCrMo chilled cast iron rolls (I)	2.9/3.6	0.25/0.8	0.2/1.0	≤0.4	≤0.08	0.5/1.0	0.2/0.6	0.2/0.6
NiCrMo chilled cast iron rolls (II)	2.9/3.6	0.25/0.8	0.2/1.0	≤0.4	≤0.08	1.0/2.0	0.3/1.2	0.2/0.6
NiCrMo chilled cast iron rolls (III)	2.9/3.6	0.25/0.8	0.2/1.0	≤0.4	≤0.08	2.0/3.0	0.5/1.5	0.2/0.6
NiCrMo chilled cast iron rolls(IV)	2.9/3.6	0.25/0.8	0.2/1.0	≤0.4	≤0.08	3.0/4.5	0.5/1.7	0.2/0.6

Physical Properties

Designation of rolls	Barrel hardness (HSD)	Neck hardness (HSD)	Tensile strength (MPa)	Depth of chilled lager
				200	200/250	250/300	300
NiCrMo chilled cast iron rolls (I)	60~70	32~50	>150	12~25	15~30	17~35	20~45
NiCrMo chilled cast iron rolls (II)	62~75	35~52	>150	12~25	15~30	17~35	20~45
NiCrMo chilled cast iron rolls (III)	65~80	40~55	>150	12~25	15~30	17~35	20~45
NiCrMo chilled cast iron rolls(IV)	70~85	32~45	>150	12~25	15~30	17~35	20~45

Microstructure

Designation of rolls	Microstructure
NiCrMo chilled cast iron rolls (I)	Pearlite + cementite +ledeburite
NiCrMo chilled cast iron rolls (II)	Fine pearlite + cementite +ledeburite
NiCrMo chilled cast iron rolls (III)	Sorbite + cementite + ledeburite
NiCrMo chilled cast iron rolls(IV)	Sorbite + cementite + ledeburite

Application

Designation of rolls	Application
NiCrMo chilled cast iron rolls (I)	Section mill, bar mill, wire-rod mill narrow strip mill, finishing stand
NiCrMo chilled cast iron rolls (II)	Section mill, bar mill, wire-rod mill narrow strip mill, finishing stand
NiCrMo chilled cast iron rolls (III)	Section mill, bar mill, wire-rod mill narrow strip mill, finishing stand, tube stretch reducing mill
NiCrMo chilled cast iron rolls(IV)	Section mill, bar mill, wire-rod mill narrow strip mill, finishing stand, tube stretch reducing mill