Professional WORK 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 .

WORK ROLLS

Work rolls are produced using the vertical centrifugal casting method in most cases. Rolls of different materials and types have the following respective advantages.

Strong wear resistance and good roll gap stability
Long service life under the premise of good plate shape and surface
Strong resistance to burn cracks and peeling
Possibility of any combination of rolling programs and hot feeding
Low non-productive grinding volume

Product Details

LMM Work rolls have an excellent combination of metallurgical and physical properties with uniform and stable hardness ensuring the highest quality of cold-rolled strip and efficient performance characteristics (resistance to wear, thermal shocks, fatigue contact cracks).

physical index

Designation of rolls	Material	Barrel hardness HSD	Neck hardness HSD	Tensile strength Mpa
work rollⅠ	HCrⅠ	60-75	32-45	＞350
work roll (Ⅱ)	HCrⅡ	65-80	32-45	＞350
work roll （Ⅲ）	HCrⅢ	75-90	32-45	＞350
work roll	HCrS	70-85	35-45	≥450

chemical index

Designation of rolls	Material	C	Si	Mn	Ni	Cr	Mo
work rollⅠ	HCrⅠ	3.00-3.30	0.30-1.00	0.50-1.20	0.70-1.70	12.00-15.00	0.70-1.50
work rolll (Ⅱ)	HCrⅡ	3.00-3.30	0.30-1.00	0.50-1.20	0.70-1.70	15.01-18.00	0.70-1.50
work rolll（Ⅲ）	HCrⅢ	3.00-3.30	0.30-1.00	0.50-1.20	0.70-1.70	18.01-22.00	1.51-3.00
Work roll	HCrS	1.00-1.80	0.40-1.00	0.50-1.00	8.00-15.00	0.50-1.50	1.50-4.50

Microstructure

Designation of rolls	Material	Microstructure
Work rollsⅠ	HCrⅠ	Bainite +carbide
Work rolls (Ⅱ)	HCrⅡ	Bainite +carbide
Work rolls（Ⅲ）	HCrⅢ	A small amount of bainite + martensite + carbide
Work rolls	CS	tempered martensite + carbide sorbite

Work rolls for rough strip rolling and plate

Good mechanical properties
Good biting performance
No slipping or chattering occurs at large reductions
Long service life due to good wear resistance and thermal crack resistance
Stable wear curve and smooth surface
Product shape is stable

Cold rolling work roll

Extremely high resistance to peeling
No soft spot
Good wear resistance
No secondary quenching required
Minimal unproductive grinding
Long service life
No stains

Hot rolled strip work roll

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.