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FORGE-BR
ETERNAL
The Forging Steel Cold-rolling Backup Roll is a core component for cold rolling mills, dedicated to processing steel plates, aluminum plates, and copper plates. Produced by the ETERNAL brand (model: FORGE-BR), it adopts high-purity 9Cr3Mo steel as the base material—this alloy steel is renowned for its excellent toughness and wear resistance, making it ideal for high-intensity cold rolling operations. Unlike ordinary rolls, it uses ESR ingot (Electroslag Remelting ingot) as the raw material, which significantly reduces internal defects and improves material uniformity. With a maximum size of up to 1250mm, it can adapt to both small precision rolling lines (e.g., battery electrode rolling) and large-scale industrial cold rolling production, ensuring stable performance even under long-term heavy loads.
Parameter | Specification |
Brand | ETERNAL |
Model | FORGE-BR |
Material | 9Cr3Mo steel (variants like 9Cr3MoV with 0.15%-0.30% Vanadium available) |
Max Size | Up to 1250mm |
Hardness Range | HRC55-65 (up to HRC65-68 for cryogenic + chrome-plated precision versions) |
Raw Material | ESR ingot |
Heat Treatment | Long-time annealing (stress relief) → Oil quenching → Double-frequency quenching |
Surface Roughness (Ra) | ≤ 0.4μm (for battery electrode rolling) |
Key Alloy Elements | C: 0.85%-0.95%, Cr: 2.50%-3.50%, Mo: 0.20%-0.40% |
High-strength 9Cr3Mo steel: The synergistic effect of chromium (enhances hardenability) and molybdenum (resists tempering softening) makes it suitable for high-load cold rolling environments.
ESR ingot raw material: Ensures ultra-high material purity, eliminating internal inclusions that cause roll cracking.
Long-time annealing process: Effectively removes internal stress from forging, preventing deformation during subsequent heat treatment.
Oil quenching technology: Reduces crack risks compared to traditional water quenching, extending the roll’s service life.
Double-frequency quenching: Achieves deep and uniform hardening layers, pushing surface hardness up to HRC68 for extreme wear resistance.
Stable carbide structure: High carbon content forms hard carbides with Cr/Mo, maintaining hardness even at high rolling temperatures.
Precision surface processing: Ra ≤ 0.4μm surface roughness meets the strict requirements of battery electrode rolling for uniform thickness.
The Forging Steel Cold-rolling Backup Roll is widely applied in:
Steel plate cold rolling mills: Producing cold-rolled steel for automotive bodies, home appliances, and construction materials.
Aluminum plate cold rolling mills: Processing thin aluminum sheets for packaging, electronics, and aerospace components.
Copper plate cold rolling mills: Manufacturing high-conductivity copper sheets for electrical cables and industrial machinery.
Battery electrode rolling lines: Its ultra-smooth surface (Ra ≤ 0.4μm) ensures consistent electrode thickness, critical for lithium-ion battery performance.
Precision metal strip rolling: Handling stainless steel strips and special alloy strips that require strict dimensional accuracy.
The core material is 9Cr3Mo steel, a high-performance industrial roll steel with balanced hardness (HRC55-65) and toughness, supported by chromium and molybdenum for enhanced durability.
Double-frequency quenching creates a high-hardness surface layer (up to HRC68) and sufficient hardening depth, ensuring the roll resists wear during long-term rolling while the core remains tough to avoid breakage.
ETERNAL offers customized solutions based on customer needs, but the standard maximum size is 1250mm—larger sizes require special forging and heat treatment processes to maintain performance.
Yes. The chromium content (2.50%-3.50%) in 9Cr3Mo steel provides basic corrosion resistance, and optional chrome plating can further enhance protection for harsh corrosive environments.
The Forging Steel Cold-rolling Backup Roll is a core component for cold rolling mills, dedicated to processing steel plates, aluminum plates, and copper plates. Produced by the ETERNAL brand (model: FORGE-BR), it adopts high-purity 9Cr3Mo steel as the base material—this alloy steel is renowned for its excellent toughness and wear resistance, making it ideal for high-intensity cold rolling operations. Unlike ordinary rolls, it uses ESR ingot (Electroslag Remelting ingot) as the raw material, which significantly reduces internal defects and improves material uniformity. With a maximum size of up to 1250mm, it can adapt to both small precision rolling lines (e.g., battery electrode rolling) and large-scale industrial cold rolling production, ensuring stable performance even under long-term heavy loads.
Parameter | Specification |
Brand | ETERNAL |
Model | FORGE-BR |
Material | 9Cr3Mo steel (variants like 9Cr3MoV with 0.15%-0.30% Vanadium available) |
Max Size | Up to 1250mm |
Hardness Range | HRC55-65 (up to HRC65-68 for cryogenic + chrome-plated precision versions) |
Raw Material | ESR ingot |
Heat Treatment | Long-time annealing (stress relief) → Oil quenching → Double-frequency quenching |
Surface Roughness (Ra) | ≤ 0.4μm (for battery electrode rolling) |
Key Alloy Elements | C: 0.85%-0.95%, Cr: 2.50%-3.50%, Mo: 0.20%-0.40% |
High-strength 9Cr3Mo steel: The synergistic effect of chromium (enhances hardenability) and molybdenum (resists tempering softening) makes it suitable for high-load cold rolling environments.
ESR ingot raw material: Ensures ultra-high material purity, eliminating internal inclusions that cause roll cracking.
Long-time annealing process: Effectively removes internal stress from forging, preventing deformation during subsequent heat treatment.
Oil quenching technology: Reduces crack risks compared to traditional water quenching, extending the roll’s service life.
Double-frequency quenching: Achieves deep and uniform hardening layers, pushing surface hardness up to HRC68 for extreme wear resistance.
Stable carbide structure: High carbon content forms hard carbides with Cr/Mo, maintaining hardness even at high rolling temperatures.
Precision surface processing: Ra ≤ 0.4μm surface roughness meets the strict requirements of battery electrode rolling for uniform thickness.
The Forging Steel Cold-rolling Backup Roll is widely applied in:
Steel plate cold rolling mills: Producing cold-rolled steel for automotive bodies, home appliances, and construction materials.
Aluminum plate cold rolling mills: Processing thin aluminum sheets for packaging, electronics, and aerospace components.
Copper plate cold rolling mills: Manufacturing high-conductivity copper sheets for electrical cables and industrial machinery.
Battery electrode rolling lines: Its ultra-smooth surface (Ra ≤ 0.4μm) ensures consistent electrode thickness, critical for lithium-ion battery performance.
Precision metal strip rolling: Handling stainless steel strips and special alloy strips that require strict dimensional accuracy.
The core material is 9Cr3Mo steel, a high-performance industrial roll steel with balanced hardness (HRC55-65) and toughness, supported by chromium and molybdenum for enhanced durability.
Double-frequency quenching creates a high-hardness surface layer (up to HRC68) and sufficient hardening depth, ensuring the roll resists wear during long-term rolling while the core remains tough to avoid breakage.
ETERNAL offers customized solutions based on customer needs, but the standard maximum size is 1250mm—larger sizes require special forging and heat treatment processes to maintain performance.
Yes. The chromium content (2.50%-3.50%) in 9Cr3Mo steel provides basic corrosion resistance, and optional chrome plating can further enhance protection for harsh corrosive environments.
