Professional BACKUP ROLLS Manufacturer

United Electric Steel’s Davy Company in the United States technical .

LMM GROUP can supply customer with high wear resistance and stablity, high-strength quality rolls .

BACKUP ROLLS

The static casting and differential heat treatment methods used by LMM make the work of the rolls the ideal way to align the core material with the rolling conditions. After further heat treatment, the roll has the following advantages:

The roll surface has good hardness uniformity and is maintained to scrap size
The entire use layer has good wear resistance
Excellent anti-flaking properties
Due to the high-strength core material, it has excellent fracture resistance
Uniform wear curve and good rolling plate shape
Long service life

Forged Back-up roll of cold and hot strip mills

Product Name	C	Mn	Cr	Mo	V	Ni
3%Cr	0.40-0.70	0.40-0.80	2.80-3.20	0.20-0.40	0.10-0.20	0.25-0.60
5%Cr	0.40-0.70	0.40-0.80	5.00-5.40	0.30-0.50	0.10-0.20	0.25-0.60

Typical Mechanical Properties
Type of cold rolls	Tensile strength	Depth of hardness	Hardness of neck	hardness of Barrel
Cr2%	≥800	12-18	40-55	Work roll:90-98 Intermediate roll:80-90 Back-up roll:55-75 Temper roll:95-100
Cr3%	≥900	20-28	40-55	Work roll:90-98 Intermediate roll:80-90 Back-up roll:55-75 Temper roll:95-100
Cr5	≥1000	25-40	40-55	Work roll:90-98 Intermediate roll:80-90 Back-up roll:55-75 Temper roll:95-100

The scope of supply:
Type of cold rolls	Material	Body length	Body Diameter	Overall length
Cold-rolling work rolls	Cr2、Cr3、Cr5	≤2500	≤800	≤5000
Cold-rolling intermediate rolls	Cr2、Cr3、Cr5	≤2500	≤1000	≤5000
Cold-rolling back-up rolls	Cr3、Cr5	≤2800	≤1800	≤8000
Cold-rolling temper rolls	Cr2、Cr3、Cr5	≤2500	≤800	≤5000

LMM GROUP have been supplied to world’s top steel manufacturer :

United Arab Emirates：Emirates Steel
Egypt:Ezz Steel
Russia:MMK，Mechel, NLMK
Luxembourg：RIVA Group，ArcelorMittal
Turkey: Tosyalı Holding，İçdaş，Erdemir Group
Spain: Liberty Steel Group，CELSA Steel Group
India: tata-steel，SAIL, SPL，Erdemir Group etc. We do OEM for Concast and Danieli for a long time

Pre-Sales Service

* Inquiry and consulting support.

* Planning layout and Design requires machinery

* Welcome visit our Factory.

* The production process and before leaving the factory, all performance indicators are strictly tested, and the professional QC team controls according to the process.

After-Sales Service

* Engineers available to service machinery overseas.

* IN-TIME delivery goods.

* The quality is tracked throughout the process, and the installation and use are guided throughout the process.

* Long-term technical support.

* Stick to the agreement, do not do anything that violates the agreement, stick to the spirit of the contract to the end.