Durable 9Cr3Mo Forging Work Roll Electrode Roll for New Energy Lithium Battery Calender Machine

1.Material: 9Cr3Mo forged steel

2.Application：New energy lithium battery calender press

3.Lead time：45-60 days after receiving the advance payment
4.Payment type ：50% after signing the contract, and 50% before shipment
5.Payment terms：FOB/EXW/FCA/CIF，etc
6.Package:：Wooden Box
7.MOQ: 1 pcs
8.Service: customized
9.Quality Warranty Certificate: chemical composition and mechanical properties test certificates
10.How can we guarantee quality?
We have complete production equipments. All processing procedures are completed with strict quality control throughout the entire process.

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Model:
FORGE- Electrode Roll
Brand:
ETERNAL

Product Description

Why Choose 9Cr3Mo?

9Cr3Mo is a high-end roll steel specially developed for high-pressure, high-wear resistance, high rigidity, low deformation tendency and easy precision grinding & polishing rolls. It is perfectly suitable for the high-pressure rolling working condition of lithium battery electrode rolls.

1.9Cr3Mo chemical composition advantage

C	Si	Mn	Cr	Mo	P/S
0.85-0.95%	0.25-0.45%	0.2-0.35%	2.5-3.5%	0.2-0.4%	≤0.025%

9% C: Ensures high hardness and excellent wear resistance after quenching.

3% Cr: Provides strong corrosion resistance, oxidation resistance, anti-sticking to electrode sheets, and outstanding hardenability.

Mo: Refines grain structure, resists temper softening, delivers high temperature resistance and thermal fatigue resistance.

2.High hardness with far superior wear life compared to ordinary alloy steel

Hardness can reach HRC 58～62 after quenching and tempering.

3.High rigidity, excellent deformation resistance and deflection resistance, enabling more uniform electrode sheet thickness

Lithium battery roller presses operate under extremely high linear pressure. Conventional rolls are prone to middle bending and thinner ends, resulting in electrode sheet thickness deviation.

9Cr3Mo features dense microstructure, high strength, excellent rigidity and low elastic deformation. It shows minimal deflection under high pressure. Combined with roll bending technology, it easily controls the electrode sheet thickness consistency within ±1μm.

4.Excellent dimensional stability with minimal deformation during heat treatment

5.Superior polishing performance, ideal for mirror-finish electrode rolls

9Cr3Mo has fine grain structure and low impurity content:

Easily achieves mirror finish with Ra≤0.02μm.

6.Heat resistance and thermal fatigue resistance, suitable for hot rolling process

Both NCM and LFP materials require long-term hot rolling at 80～120℃.

The molybdenum (Mo) element provides high-temperature tempering resistance, keeping the roll from softening and edge collapse under elevated temperatures.

Technical Parameters

1.Service	customized
2.Material	9Cr3Mo forging steel
3.Diameter	φ200–400mm
4.Length	500–1500mm
5.Hardness range of the roller body	HRC 58-62
6.Depth of hardened layer	≥25mm

Application

New energy lithium battery calender press
Aluminium / copper foil calender press

Production Procedure

Raw Material
Electric furnace refined 9Cr3Mo electroslag remelting steel ingot
Open Die Forging (Key Process)
Forging temperature: Initial forging 1150～1200℃, Finish forging 850～900℃
Process: Upsetting + Drawing, forging ratio ≥3:1
Spheroidizing Annealing
Charge into furnace immediately for spheroidizing annealing after forging.
Function: Reduce hardness, improve machinability, and prepare microstructure for subsequent quenching.
Rough Machining
Rough turn the outer circle and both end shaft journals on lathe; leave a finishing grinding allowance of 1.5～2.5mm on each side.
Pre-quenching and Tempering
Pre-treatment by quenching + high-temperature tempering.
Relieve internal stress generated by forging and rough machining.
Finishing Reference Machining
Precision turn center holes at both ends and shaft journal reference surfaces.
Final Heat Treatment (Core Key Process)
Vacuum quenching + multiple high-temperature tempering
Final hardness: HRC 58～62
Precision Cylindrical Grinding (Precision Shaping)
The dimensional tolerance of roller surface is precisely matched according to lithium battery pole piece matching rollers.
Dynamic Balancing Correction
High-precision dynamic balancing is mandatory for high-speed rolling.
Surface Strengthening Treatment (Choose one of two options)
Option A: Hard Chrome Plating
Option B: Supersonic Spraying of Tungsten Carbide
Ultra-precision Mirror Polishing
Final Inspection & Warehousing