Rolling Mill Rolls

The company has a team of technical experts composed of various professionals,
and has the scientific research, design and development capabilities to provide new materials and new technology
rolls for various modern rolling mills, and can provide differentiated products and special services for different rolling mill conditions.

Product name: rolling mill 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

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

Production Equipment

The company possesses eight melting facilities,including an Electric Arc Furnace for steel melting of30 tons, 45/70 tons LF-VD Furnaces, Electric SlagRemelting Furnaces (10 tons and 15 tons), and medium frequency Induction Melting Furnaces (5tons, 10 tons and 20 tons). These melting facilities intotal can accomplish a daily smelting capacity of 120tons of molten steel, 240 tons of molten iron and 25tons of electric slag remelting. All the meltingfurnaces are automatically controlled by PLC withvery good working conditions; they are equiped withautomatic alarm system and furnished with perfectequipment for eliminating smoke & dust. All the rawmaterials for smelting are strictly controlled, thechemical composition are precisely tested to ensurethe qualified melting process.Thereby, the refiningprocess shows also excellent results.

The company has two sets of horizontal centrifugal casting machines, with the maximumspin cast roll size of Dia. 1400× 3860mm Barrel Length. The centrifugal casting machinescan realize the integration of spray coating and controlling the mould temperature.They aredriven by hydraulic motor and operated steadily. The speed of rotation could reach 1500 r/min,which can assure the technical requirement ongravity multiple accurately and confirm the best quality of working layer.

There is one set of 45MN Oil Hydraulic Press which can ensure the adequate ratio of forging reduction and deformation for forged rolls.

There are sixteen sets of car-type electric resistance furnaces and gas furnace so perating with high,medium and lowtemperature, two sets of differential heat treatment furnaces, one set of dual-frequency induction quenching machine, two sets of spray quenching machines, one set of high-frequency hardening machine and two sets of deep freezing treatmentt roughs. All the furnaces are computer-controlled, with the furnace temperature deviation less than 10℃, which ensures very good uniformity of roll hardness.

There are 36sets of machining equiment, including CNC lathes, CNC grinders, and CNC double-sidedmilling machines. The machining range can be dia. 80×1000-dia.1600×8000mm and recision ranges up to0.003mm.

Checkout Equipment

The company has the most advanced inspection and testing equipments such as X-ray Fluorescence Spectrometer, Plasma Emission Spectrometer,Optical Emission Spectrometer (OBLF), Hydrogen /Oxygen /Nitrogen Combined Analyzer (LECO), Carbon /Sulfur Analyzer for chemical analysis; and also has Scanning Electron Microscope, Metaloscope, Image Analyzer (Zciss), Microhardness Tester, Universal Testing Machine, Impact Testing Machine, Analog and Digital Ultrasonic Testing Device, Magnetic Powder UT Tester, Stress Meter. PortableLeeb & Shore Hardness Tester, etc. All these instruments and equipments can guarantee the Quality Assurance effectively.

  • Well equipped chemical and physical labs
  • Standard test and inspection procedures
  • Records and samples are kept till roll scraped
  • Final inspection done by QC Dept of third party
  • Advanced and mature process as shown previously
  • Technical confirmation during Heat Treatment process
  • Most of equipments are computer-controlled
  • Standard operation guided by specified process cards
  • Traceable operation records

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

lnside Structure & Character

Application

Material

Hardening Layer (mm)

Roll Hardness(HSD)

Uniformity HSD

Neck Hardness HSD

Working Roll
Intermediate Roll

Cr2

13( > 90HSD)

70~90

≤3

35-70

Cr3

32(>90HSD)

70~103

≤3

35-70

Cr5

50( > 90HSD)

70~103

≤3

35-70

Back Up Roll

Cr3-Cr5

100

60~90

≤3

30-50

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

lnside Structure & Character

Material

Roll Hardness

Neck Hardness

Tensile Strength

Alloy Semisteel

40-65HS

≤50HS

≥490MPA

Alloy Cast Steel

35-70 HS

≤45HS

≥600MPA

Graphitic Steel

35-70 HS

≤45HS

≥600MPA

Mill Rolls Type

Keywords:

rolling mill rolls

Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.

Always a pre-production sample before mass production;
Always final Inspection before shipment;
During the epidemic, provide remote detection technical support

Tell us a little about your application and we’ll get back to you to finalize a quotation to meet your needs as quickly as possible.

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