Alloy indefinite chill cast iron rolls

Alloy indefinite chill cast iron rolls

Chemical Analysis

Designation Matenal code C Si Mn Ni Cr Mo
CrMo indefinite chilled cast iron rolls IC 3.1-3.4 0.6-0.9 0.5-1.0 0.7-1.1 0.2-0.6
NiCrMo indefinite chilled cast iron rollsⅠ ICⅠ 3.1-3.4 0.6-0.9 0.5-1.0 0.6-0.8 0.7-1.1 0.2-0.6
NiCrMo indefinite chilled cast iron rollsⅡ ICⅡ 3.1-3.4 0.6-1.0 0.5-1.0 2.2-2.8 0.7-1.1 0.2-0.6
NiCrMo indefinite chilled cast iron rollsⅢ ICⅢ 3.1-3.4 0.6-1.0 0.5-1.0 2.2-2.8 0.8-1.3 0.2-1.0
NiCrMo indefinite chilled cast iron rollsⅣ ICⅣ 3.1-3.4 0.6-1.0 0.5-1.0 3.1-4.3 1.0-1.3 0.2-1.0
NiCrMo indefinite chilled cast iron rollsⅤ ICⅤ 3.1-3.4 0.6-1.2 0.5-1.0 3.8-4.5 1.4-2.0 0.1-1.2

 

Physical Properies

Designation Matenal code Barrel hardness HSD Neck hardness HSD Tensile Strength Mpa
CrMo indefinite chilled cast iron rolls IC 50-70 35-55 >160
NiCrMo indefinite chilled cast iron rollsⅠ ICⅠ 55-72 35-55 >160
NiCrMo indefinite chilled cast iron rollsⅡ ICⅡ 55-72 35-55 >160
NiCrMo indefinite chilled cast iron rollsⅢ ICⅢ 65-78 35-55 >350
NiCrMo indefinite chilled cast iron rollsⅣ ICⅣ 70-83 35-55 >350
NiCrMo indefinite chilled cast iron rollsⅤ ICⅤ 77-82 35-55 >350

 

Microstructure

Designation Matenal code Microstructure
CrMo indefinite chilled cast iron rolls IC Pearlite + cementite + small percentage graphite
NiCrMo indefinite chilled cast iron rollsⅠ ICⅠ Fine  Pearlite + cementite + small percentage graphite
NiCrMo indefinite chilled cast iron rollsⅡ ICⅡ Fine Pearlite + cementite + small percentage graphite
NiCrMo indefinite chilled cast iron rollsⅢ ICⅢ Sorbite + cementite + small percentage graphite
NiCrMo indefinite chilled cast iron rollsⅣ ICⅣ Sorbite tempered bainite + carbide +graphite +A small amount of martensite or bainite +carbide +graphite
NiCrMo indefinite chilled cast iron rollsⅤ ICⅤ Sorbite tempered bainite + carbide +graphite +A small amount of martensite or bainite +carbide +graphite

 

Application

Designation Matenal code Application
CrMo indefinite chilled cast iron rolls IC Section mill , bar mill , intermediate and finishing stands of wire-rod mill
NiCrMo indefinite chilled cast iron rollsⅠ ICⅠ Section mill , bar mill , intermediate and finishing stands of wire-rod mill
NiCrMo indefinite chilled cast iron rollsⅡ ICⅡ Section mill , bar mill , intermediate and finishing stands of wire-rod mill
NiCrMo indefinite chilled cast iron rollsⅢ ICⅢ Section mill , bar mill , intermediate and finishing stands of wire-rod mill
NiCrMo indefinite chilled cast iron rollsⅣ ICⅣ Profile , rod and wire , narrow strip mill finishing stand ,Plate , flal rack ,strip finishing
NiCrMo indefinite chilled cast iron rollsⅤ ICⅤ Plate , flat rack ,strip finishing