 |
| Quantity: | |
|---|---|
FORGE-Cold Roll Work Roll
ETERNAL
The forged steel cold rolling work roll is an important core spare part of copper plate/copper strip cold rolling mill, mainly used for four roll copper plate reversible rolling mill and continuous rolling unit, suitable for rolling medium thick copper plates, copper strips, and copper bars.
9Cr2Mo has become the main roll material in the field of copper plate cold rolling bacause of its strong toughness matching, deep quenched hard layer, contact fatigue resistance, and high cost-effectiveness.
ETERNAL can been supplied to world's top steel manufacturer :
German:SMS Group,Achenbach
Italy:Danieli,Mino
Japan:Hitachi
Austria:Andritz,etc.
| Manufacture drawing | √ | Process schedule with ETD date | √ |
| Raw material chemical specification test 100% | √ | Forging temperature control 100% | √ |
| Heat treatment after forging 100% | √ | UT test after forging 100% | √ |
| MT test after heat treatment 100% | √ | Metallographic test is optional | √ |
| Forging sample cutting is optional | √ | Sample mechanical property test is 100% | √ |
| Finish machining is optional | √ | Mechanical property test report | √ |
| Mill test report | √ | The third party Checking | √ |
| Photos &videos of each process | √ | ISO 9001,45001,14001 certificates | √ |
| Safety export packing 100% | √ | Warranty Time | √ |
Parameter | Specification |
Brand | ETERNAL |
| Raw Material | ESR ingot |
| Material | Cr2 series steel,forged 9Cr2Mo |
| Key Features | Strong toughness matching, deep quenched hard layer, contact fatigue resistance, and high cost-effectiveness |
Application | Copper plate rolling mills,etc metallurgical equipments |
| Production Process | Electric slag remelting → forging → heat treatment → lathe machining |
| Heat Treatment | Normalizing; spheroidizing annealing; Oil quenching+ high-temperature tempering |
| Surface Treatment | Hard chromium electroplating strengthening Double-frequency quenching; low-temperature tempering |
| Core Hardness | HRC 35-45 |
Surface Hardness | HRC 58-62 |
| Depth of Hardened Layer | 10-30 mm |
Inspection Test | 100% UT/MT according to standards such as EN 10228 series,ASTM A388M/A388、A966/A966M |
9Cr2Mo ESR alloy steel ingot is a must because of its high purity, dense structure, uniform composition, and controllable inclusions.It is manufactured by EAF+LF+VD+ESR. The Chemical composition is:
C: 0.85~0.95% Ensure hardness and wear resistance.
Si: 0.20~0.40% Improve forging performance
Mn：0.20~0.40% Improve forging performance
Cr：1.70~2.20% Improve hardenability and copper adhesion resistance
Mo：0.20~0.40% Prevent temper embrittlement
P：≤0.015% Reduce harmful inclusions
S: ≤0.005% Reduce harmful inclusions
High Temperature Forging
ETERNAL adopts free forging, with multiple upsetting and elongation processes to break down coarse grains in the cast state, allowing for continuous distribution of metal fibers and improving overall strength and impact resistance.
Pre-heat treatment After Forging
Normalization+spheroidization annealing, softening the matrix, refining grains, facilitating subsequent mechanical processing, while eliminating internal stresses during forging.
Rough Machining
Turning the roller body and neck, reserving grinding allowance.
Final Heat Treatment
Overall oil quenching+high-temperature tempering+surface deep induction quenching of the roll body+low-temperature tempering;
Purpose: To obtain high hardness and deep quenched hard layer on the working surface of the roll body, retain high toughness in the roll neck and core, and prevent roller breakage and cracking in the roller neck
Final Machining
Grind step by step to meet the requirements of size, roundness, and roughness.
Surface Hardening
9Cr2Mo forged steel work rolls usually undergoes hard chromium electroplating strengthening to isolate the contact between the steel roll and the copper material, reduce metal adhesion, extend the grinding cycle, and improve the surface quality of the copper plate.
Quality Inspection
UT and MT are used to investigate internal/surface microcracks.
Package and Transportation
Eternal Heavy Industry Co.,Itd covers the space 15000 square meters,8000 square meters heavy duty workshop was builted. Its max lift height is 16 Meters and designed max loading capacity is 75 tons.
Eternal Heavy Industry Co.,Itd has advanced manufacturing equipment including vertical CNC machining centers, frame type CNC machining centers, CNC lathes, heavy duty horizontal lathes, display boring and milling machines,etc. Testing equipment includes computer tensile testing machine,low temperature impact tester,UT tester,MT detector,etc.
Pre-sales service: According to the actual working conditions and needs of customers，ETERNAL recommends suitable materials and can develop and design products according to needs. Customized services can also be provided.
Strict quality control: From raw materials to 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: Resolution of any issues and free maintenance and replacement of parts during the warranty period.
Raw material workshop Forging workshop Heat treatment workshop Machining workshop
Machining workshop Machining workshop Assembly workshop Finished product workshop
ETERNAL has been exported to Europe, U.S.A , South Africa, Russian, Mexico, Brazil, Peru, Chile, Korea, Vietnam, Indonesia, Middel East, etc more than 80 countries.
Our quality is accepted by customers. In future we would devote ourselves to deep research and new market, and we expect to make a better co-operation with our customers.
ETERNAL's work rolls are used in rolling mills to make (stainless) steel plates and strips , aluminum plate/foil , copper plate/foil etc . They are typically made of forged alloy steel, which provides high toughness and purity.
2.What International Certifications has ETERNAL obtained?
ETERNAL products are manufactured in compliance with TUV,ISO 9001, ISO45001, ISO 14001 standards and have successfully obtained relevant international certifications.
