Home Companies BEIJING SINO STEEL ENGINEERING & EQUIPMENT CO., LTD.

Cr1 Cr2 Cr3 Cr5 Cr8 Cr12 Forged Steel Rolls work roll backup roll for hot and Cold Rolling Mill

Active Member

Contact Us

[China]

Address: Block 1, Beihuayuanjie, Chaoyang, Beijing 100024, China; market@sinosteelengineering.com

Contact name:

BEIJING SINO STEEL ENGINEERING & EQUIPMENT CO., LTD.

Cr1 Cr2 Cr3 Cr5 Cr8 Cr12 Forged Steel Rolls work roll backup roll for hot and Cold Rolling Mill

Country/Region china
City & Province beijing beijing
Categories Other Metal Processing Machinery

Product Details

Forged Steel Rolls rolling mill steel grade Cr1 Cr 2 Cr 3 Cr 5 Cr 12

 

 

 

1.Production equipment:

 

1.1 Introduction furnace: 25tx8sets, 10t/3tx5sets

1.2 EAF: 30tx5sets

1.3 Ladle furnace: 50-70tx8sets

1.4 Large send Foundry equipment: 20 sets

1.5 Large & Middle size heat treatment: 50 sets

1.6 Large & Middle size centrifugal casting machine: 20 sets

1.7 Large & Middle size CNC & Heavy machine: 235 sets

1.8 Testing equipment: 35 sets

 

2. Production capacity: 150000Tons/Annual

 

2.1TYPE & Size:

 

2.1.1Cast roll & RING:

 

Backup roll: Max. Dia. 2000mm; Max weight 80t/pc,

Work roll: Max. Dia. 1600mm; Max. Barrel length 6500mm;

Max weight 85t/pc

Others: as per customer’s requirement.

 

2.1.2 Forged roll & RING:

Work roll for Cold Rolling mill: Max. Dia. 1100mm; Max weight 25t/pc,

Work roll for Hot Rolling mill: Max. Dia. 1600mm; Max weight 75t/pc

Backup roll for Hot Rolling mill: Max. Dia. 2000mm; Max weight 75t/pc

Others: as per customer’s requirement.

 

3. Forging


The qualified steel ingot is pressed to the roll blank by the hydraulic forging machine after pre-heating, heating and even heating.

 

The purpose of forging and pressing process is: the forging and pressing can reduce and compress the porosity, shrinkage and some pore; improve the macroscopic segregation (pattern segregation, V shape segregation) in the original structure of the steel ingot; shatter the gross liquation carbide and net carbide; crush and refine the gross grain.

 

In order to acquire the optimized feature of the roll, we strictly control the forging ratio , not less than 3 for work rolls while more than 2.5 for large size backup rolls.

 

4. Electro Slag Remelting

 

Electro slag remelting (ESR) is a specialized steel-making process in which a cast ingot in the form of an electrode is re-melted in a water-cooled copper mould. The melting is activated by resistive heat generated in a conductive slag.

 

Charactersistics of ESR:


1. No macroscopic segregation and few microscopic segregation. Very few and subtle non-metal inclusion; dispersed distribution.


2. Compact and homogeneous structure


3. High toughness and strength


4. Beneficial for improvement of anti-fatigue and heat impact ability of the roll

 

 

FORGED STEEL ROLL

MaterialSteel GradeChemical coposition %Application
CCrMoVNiMnCoW 
Cr1GCr150.95-1.051.3-1.65  ≤0.4   

Work roll of Cold mill

Straightenning roll

Pinch roll

9CrV0.85-0.951.4-1.7 0.1-0.25≤0.25   
42CrMo0.38-0.450.9-1.20.15-0.25     Work roll & Backup roll for Hot rolling mill
60CrMo0.55-0.650.5-0.80.3-0.4     
60CrMnMo0.55-0.650.8-1.20.3-0.4  0.7-1.0  
60CrMoV0.55-0.650.9-1.20.3-0.40.15-0.35    

Straightenning roll

Pinch roll

Cr29Cr2Mo0.85-0.951.7-2.10.2-0.4     Work roll, Middle roll, Backup roll for Cold Rolling mill
86CrMoV70.82-0.91.8-2.20.2-0.40.1-0.2    
9Cr2MoV0.85-0.951.7-2.10.2-0.30.1-0.2    
Cr39Cr3Mo0.85-0.952.5-3.50.2-0.4     

Work roll, Middle roll, Backup roll for Cold Rolling mill

(high quenching, deep hard layer)

MC3A0.8-0.882.8-3.20.4-0.60.05-0.120.6-0.8   
MC3B0.82-0.92.7-3.10.1-0.30.05-0.120.2-0.4   
70Cr3Mo0.6-0.752.0-3.50.25-0.6     

Work roll, Middle roll, Backup roll for Hot Rolling mill

(high quenching, deep hard layer)

70Cr3NiMo0.6-0.82.0-3.00.25-0.6 0.4-0.6   
Cr5MC50.82-0.95-5.40.2-0.40.1-0.20.3-0.5   

Work roll for Cold Rolling mill

(high quenching, deep hard layer)

MC5A0.77-0.845-5.40.3-0.50.1-0.20.3-0.5   
Cr12Cr12MoV1.45-1.711-12.50.4-0.60.15-0.3    Work roll, Middle roll for Multi-roll Rolling mill
Cr12Mo1V11.4-1.611-130.7-1.2≤1.1  ≤1.0 
Cr12MoVCo1.4-1.611-130.8-1.20.75-0.95  0.3-0.5 
W steelW6Mo5Cr4V20.8-0.93.8-4.04.5-5.51.75-2.25   5.5-6.75Work roll for Multi-roll Rolling mill
W12Cr4V5Co51.5-1.63.75-5.0≤1.04.5-5.25  4.75-5.2511.75-13

 

 

Hot Products

Electric Arc Furnace contacting block pad electrode clamping unit Application: This product found ...
Electric Arc Furnace EAF30 EAF150 Ladle furnace 15 LF250 100% scrap EAF and LF High Impedance Series ...
Electric Arc furance High Impedance Electric Melting Furnace Ladle furance EAF and LF High Impedance ...
Electric Arc Furnace EAF LF VOD tilting mechanism Electrode lifting mechanism Electric Arc Furnace ...
Electric Arc Furnace CURRENT CONDUCTING ELECTRODE ARM copper steel Our design and construction are ...
Electric Arc Furnace 100% scrap operation part-scrap part-molten steel operation Electrode arms for ...