Products

DESCRIPTION

Basic Info.

Model NO.	As Per Requirement Drawing
Type	Four-Roll Cold Mill
Certification	ISO
Material	5%Cr
Transport Package	As Per Customer Requirement
Specification	Customized
Trademark	TX
Origin	China
HS Code	8455300000
Production Capacity	2000 PCS Per Year

Product Description

Introduction:
Back up rolls are important spare parts in rolling mill. The quality of forging rolls directly affects the quality of sheets & coils. By our years of experience, we can supply good quality forging roll with uniformity hardness, premium wear resistance and anti-thermal crack performance.
1. No macroscopic segregation and few microscopic segregations.
2. Very few and subtle non-metal inclusion; dispersed distribution.
3. Compact and homogeneous structure.
4. High toughness and strength
5. Beneficial for improvement of anti-fatigue and heat impact ability of the roll.

Manufacturing:

Material and Properties:
The following table gives a general overview of our main grades for rolls and all kinds of the material are in forging process.

Type	Main Material	Hardness	Hardness Uniformity	Depth of hardness	Size
Back-up Roll	9Cr2Mo (2% Cr)	55-80 HSD	4HSD	30mm	¢500-800mm
	70Cr3Mo (3% Cr)	55-80 HSD	4HSD	60mm	¢500-1800mm
	45Cr4NiMoV (4% Cr)	55-80 HSD	4HSD	75mm	¢1000-1800mm
	YB-70 (5% Cr)	55-80 HSD	4HSD	100mm	¢1000-1800mm

Applications:
The back up rolls are used in cold rolling mill of 4Hi, 6Hi reversing reduction mill and tandem mills, as well as temper mills and skin pass mills. Also, the back up rolls are used in hot strip rolling mill.
Product Photos: