rolling mill rolls

Application：

Section mill，bar mill、intermediate and finishing stands of wire–rod mill，narrow strip mill finishing stand, Plate, flat rack, strip finishing

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

rolling mill rolls steel roller

Product name: Alloy indefinite chilled cast iron rolls
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
Customization:
Customized logo(Min. Order 1 piece)
Customized packaging(Min. Order 1 piece)
Graphic customization(Min. Order 1 piece)
Checking report: Material Report、Hardness Report、UT/MT Report、Dimensions checking report、Mechanical Property Test Report

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

Manufacture drawing√
Process schedule with ETD date√
QC checking of each process√
Checking report√
Photos &videos of each process√
ISO 9001 certificate√
Warranty Time√
The third party Checking√

Product parameters

Chemical composition : Si, C, Mn, Ni, Cr, Mo
Barrel hardness: 50-82
Neck hardness: 35-55
Tensile strength: ＞160 -＞350
Microstructure：Pearlite+cementite+small percentage graphite 、Sorbite tempered bainite+ carbide + graphite + A small amount of martensite or bainite + carbide + graphite
Application：

Section mill，bar mill、intermediate and finishing stands of wire–rod mill，narrow strip mill finishing stand, Plate, flat rack, strip finishing

Barrel diameter ≤1 400mm
Barrel length ≤ 4600mm

Production Equipment

  • 20T/30T dual power inverter intermediate frequency electric furnace
  • lOT, 5T, 3T intermediate frequency electric furnace, a total of 8
  • 60T LF ladle slightly smelting furnace
  • 60TVD vacuum refining furnace
  • V.C vacuum casting furnace
  • Equipped with advanced Spraying and sand casting equipment

The equipments all use computer centralized control automation system

  • 30 numerically controlled resistance high low temperature heat treatment furnaces
  • Spray quenching equipment
  • Open differential temperature heat treatment furnaces
  • Gas baking furnaces
  • 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.

The whole process implements computer information collection

  • 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.

Production Process


Charge Mixture → lntermediate Frequency Furnace Melting → Horizoncal Centrifugal Casting → Preparatory Heat Treatment → Rough Machining → D.H.Treatment → Finish Machining → Packing → Delivery

lnside Structure & Character

Material

Roll Hardness

Uniformity

Neck Hardness

Tensile Strength

(HSS)

78-88HS

≤4

35-45HS

≥450MPA

(HCS)

70-80HS

≤4

(HCIS)

70-90HS

≤4

(HNCS)

70-85HS

≤5

Electric arc furnace smelting → LF \ VD refining → ingot casting → annealing → cleaning → electroslag remelting → annealing → forging → post forging heat treatment → rough machining → preliminary heat treatment → semi finishing → dual frequency quenching or differential temperature treatment → cryogenic treatment → tempering → finishing → packaging and delivery.

 

  • Double refining + electroslag remelting to ensure good metallurgical quality

  • Perfect heat treatment and cold treatment technology to ensure the depth and hardness uniformity of hardened layer

Charge Mixture → Electric Arc Furnace Melting → Ladle Refining → Static Casting → Preparatory Heat Treatment → Rough Machining → D.H.Treatment → Finish Machining → Packing → Delivery

  • Temperature controlled cooling + annealing treatment after casting:
    the microstructure transformation is more sufficient and the stress state is more stable.
  • The composition of the working layer adopts multi-element micro alloying technology:
     which takes into account wear resistance and accident resistance, and has better comprehensive performance.
  • The multi-layer composite technology: is adopted to effectively block the diffusion of high alloy content in the working layer to the core structure and ensure the strength and toughness of the core structure.
  • Differential heat treatment technology: is adopted to make the microstructure change fully and the stress distribution more stable and reasonable.

 

 

Relaed product

casting iron rolls

casting steel rolls

forging steel rolls

hss rolls

Click more product

We can provide characteristic service and differentiated products according to the different conditions of rolling mill.

Service Include

  • Installation Technical Support
  • 1-Year Guarantee
  • Manual Book
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Our Clients Give The Best Feedback

@Steel A
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.
@Steel B
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 ?

Professional engineers provide solutions and technical drawings

phone

86(411) 84174804

mail

lmme-business@lmmgroup.com.cn

Special product design, please send specific data and drawings to our mailbox or form.

Why Choose LMM GROUP

We have an excellent technical service team

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

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

Our products have been running on more than 200 production lines and have rich experience

We can provide characteristic service and differentiated products according to the different conditions of rolling mill.

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

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

Service Guarantee

Pre-sales:

recommend suitable products according to the actual working conditions and needs of customers.It can also bedeveloped and designed according to needs, and customized services can be provided. During the epidemic, provide remote detection technical support

Strict quality control:

From raw materials, to the production process and befor eleaving the factory, all performance indicators arestrictly tested, and the professional QC team controls according to the process.

After-sales service:

Quality assurance and Resolution of any issues that arise

Customer-centred, stick to the contract

Enthusiastic service, with a quick

Resolution of any issues that arise

Short lead time with high quality

Are you have a purchasing plan？– contact us to get best plan. 

86 411 84174804

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