The world No. 1 in crude steel production steel plant, over 70% of the HSS for bar and wire are from us.

LMM have been supplied to world’s top steel manufacturer Arcelormittal, TATA Steel, EZZ steel etc. We do OEM for Concast and Danieli for a long time

Backup Roll

The back up roll is a roll that supports the work roll and is the largest and heaviest roll used in rolling mills.

Brand name: LMM GROUP
Packing Details : Wooden box with fumigation or Wooden Fram
Delivery Details: 30~60days or Based on the quantity
Shipping: Sea freight、Land freight、Air freight

Brand name: LMM GROUP
Packing Details : Wooden box with fumigation or Wooden Fram
Delivery Details: 30~60days or Based on the quantity
Shipping: Sea freight、Land freight、Air freight

The roll can support intermediate roll for the purpose of avoiding deflection of the work roll and affect on the yield and quality of the plate and strip rolling mill.

The quality characteristics of the backup roll are high surface hardness, good hardness uniformity and the deep hardened layer of roll body, good strength and toughness of roll neck and roll body.

The backup roll has high wear resistance and peeling resistance, strong anti-accidents.

Chemical Analysis

Designation of rolls

Material

C

Si

Mn

Ni

Cr

Mo

ZuB140CrNiMo

AD140Ⅰ

01.30-1.50

0.30-0.60

0.70-1.10

0.50-1.20

0.80-1.20

0.20-0.60

ZuB160CrNiMo

AD160Ⅰ

1.50-1.70

0.30-0.60

0.80-1.30

≥0.20

0.80-2.00

0.20-0.60

ZuB180CrNiMo

AD180

1.70-1.90

0.30-0.80

0.60-1.10

0.20-2.00

0.80-1.50

0.20-0.60

ZuB190CrNiMo

AD190

1.80-2.00

0.30-0.80

0.60-1.20

1.00-2.00

1.50-3.50

0.20-0.50

ZuB200CrNiMo

AD200

1.90-2.10

0.30-0.80

0.80-1.20

0.60-2.50

0.60-2.00

0.20-0.80

Zu75CrMo

AS75

0.70-0.80

0.20-0.45

0.60-0.90

 

0.75-1.00

0.20-0.45

Zu75CrNiMnMo

AS75Ⅰ

0.70-0.80

0.20-0.70

0.70-1.10

≥0.20

0.80-1.50

0.20-0.60

Physical Properties

Designation of rolls

Material

Barrel hardness HSD

Neck hardness HSD

Tensile strength Mpa

ZuB140CrNiMo

AD140Ⅰ

35-50

≤60

500-800

ZuB160CrNiMo

AD160Ⅰ

40-60

≤50

500-800

ZuB180CrNiMo

AD180

45-60

≤50

450-700

ZuB190CrNiMo

AD190

50-65

≤50

450-700

ZuB200CrNiMo

AD200

50-65

≤50

450-700

Zu75CrMo

AS75

35-50

≤45

>700

Zu75CrNiMnMo

AS75Ⅰ

35-50

≤45

>800

We can provide special services and differentiated products according to the different working conditions of the rolling mill.

Service Include

Our Clients Give The Best Feedback

A STEEL
A STEEL
Read More
Although the price of LMMGROUP is 1.22 times that of the current rolling stock, through this trial, the data shows that the amount of steel passing through is more than 1.3 times higher than the current rolling stock, and the rolling groove wear of the off-line rolling is better than the current rolling stock.
B steel
B steel
Read More
According to the trial situation, The average amount of steel passing through LMMGROUP rolling is about 50%-60% of the alloy rolling spoke. The processing difficulty of high-speed steel is low, and the processing cost is lower than that of the alloy rolling wheel.
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Need For Some Help ?

One of the largest enterprises in China specializing in the production of high-performance high-speed steel roll series products

phone

86(411) 84174804

mail

lmme-business@lmmrolls.com

Founded in 2007, LMM GROUP mainly produces all kinds of metallurgical rolls for various types of steel, bar, high-speed wire and strip hot and cold plate and strip rolling mills.

The company covers an area of 100,000 square meters, including two complete production lines for cast rolls and forged steel rolls, processing workshops, product research and development centers, testing centers, training centers and office buildings and other supporting facilities. The factory environment is very beautiful.

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.

To meet various precision and requirements

Equipped with:

  • Over 20 large-sized imported NC grinding machines
  • Large-medium sized NC lathes
  • Large-medium sized NC planer-type double-side milling machines
  • As well as over 100 dedicated lathes for various rolls of C61250, C61200, C61125, C84180, C84160, C8463, C8440 and C91250 and etc.

Whole process quality and inspection system from raw materials to finished rolls

The whole process implements computer information collection and feedback processing.

Equipped with

  • American Leco CS230 carbon and sulfur analyzer,
  • German Bruker Q8 direct reading spectrometer,
  • Japanese Shimadzu MNV-2T golden microscope,
  • German KK USD12 ultrasonic flaw detector, and etc.

 

To meet various precision and requirements

Equipped with:

  • Over 20 large-sized imported NC grinding machines
  • Large-medium sized NC lathes
  • Large-medium sized NC planer-type double-side milling machines
  • As well as over 100 dedicated lathes for various rolls of C61250, C61200, C61125, C84180, C84160, C8463, C8440 and C91250 and etc.

Whole process quality and inspection system from raw materials to finished rolls

The whole process implements computer information collection and feedback processing.

Equipped with

  • American Leco CS230 carbon and sulfur analyzer,
  • German Bruker Q8 direct reading spectrometer,
  • Japanese Shimadzu MNV-2T golden microscope,
  • German KK USD12 ultrasonic flaw detector, and etc.

 

Contact US Now !

We would be happy to help and advise if you have any questions or inquiries.