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FORGE-R-OD400*L2500
ETERNAL
Forged tire crushing rolls are key wear-resistant components for roller crushers used in crushing waste tires (steel-belted tires). Their core value lies in achieving a high-hardness surface that can withstand long-term abrasion from tire steel wires and a tough core through the forging of high-quality alloy steel and precise heat treatment.
Technical Parameter
| Common Meterial | Alloy steel(42CrMo,35CrMo,etc) | Select according to specific working conditions and cost requirements. |
| Surface Hardness | HRC 55 - 65 | High hardness is the key to resistance to wear. |
| Depth of the hardening layer | 2-10mm | Ensure that the roller maintains high hardness even after a certain amount of wear. |
| Production Process | Forging ->rough machining ->heat treatment (annealing/normalizing/quenching/tempering) ->surface quenching->finish machining | Ensure the internal quality and final dimensional accuracy of the product. |
Core Characteristics and Material
The core advantages of forged crushing rollers lie in their high wear resistance and high strength provided by materials and processing, making them particularly suitable for heavy-duty working conditions such as tire crushing.
| 4140 | C | Si | Mn | Cr | Mo | P/S |
| 0.38-0.45% | 0.17-0.37% | 0.5-0.8% | 0.9-1.2% | 0.15-0.25% | ≤0.035% |
4140 machnical property(quenching + high-temperature tempering condition)
Tensile strength: 850–1080 MPa (commonly 930–1000 MPa)
Yield strength: 700–950 MPa (commonly 740–930 MPa)
Hardness: 28–32 HRC (up to 45–50 HRC after low-temperature tempering)
Elongation: 12–18%
Reduction of area: 45–55%
Impact toughness (Charpy V): Room temperature ≥ 40–60 J, -20℃ ≥ 28–50 J
Production Procedure
Forging:
High-quality steel ingots refined by electroslag remelting are repeatedly upset and drawn using a large hydraulic press or forging hammer to rearrange the internal fiber structure, aligning it along the optimal stress direction.
Heat Treatment:
After forging, the workpiece undergoes prolonged tempering and annealing to eliminate internal stresses generated during forging, preventing deformation or cracking in subsequent machining and service.
Machining:
Rough and finish machining are performed according to the drawing dimensions to ensure the roller meets precision requirements such as cylindricity and concentricity.
Final Heat Treatment / Surface Treatment:
The critical surface quenching process is carried out to achieve a high-hardness wear-resistant surface layer.
Detailed Photo
Primary Shredding: Twin-shaft shredder, which shreds whole tires into 50–100 mm rubber chips.
Secondary Shredding: Single-shaft / multi-shaft shearing rollers, separating rubber from steel wire.
Tertiary Fine Grinding: Grinding rollers, producing rubber powder (used for reclaimed rubber and modified asphalt).
Main Equipment
Eternal company own heavy duty workshop 8,000 square meters ,till now more than 100 sets machine facilities have been installed. Main facilities are listed as follows : 2000 tons fast forging press machine , heat treatment furnace (including 1200℃ high temperature furnace) , 10 meters quenching tank , 500 tons straightening machine , 6 meters middle-frequency surface quenching machine, 3-11 meter CNC horizontal lathes, CNC machining center, 10 meters deep hole boring machine, 10 meters honing machine , including all kinds inspection and test tools etc.
Machining facility
Inspection facility
Forged tire crushing rolls are key wear-resistant components for roller crushers used in crushing waste tires (steel-belted tires). Their core value lies in achieving a high-hardness surface that can withstand long-term abrasion from tire steel wires and a tough core through the forging of high-quality alloy steel and precise heat treatment.
Technical Parameter
| Common Meterial | Alloy steel(42CrMo,35CrMo,etc) | Select according to specific working conditions and cost requirements. |
| Surface Hardness | HRC 55 - 65 | High hardness is the key to resistance to wear. |
| Depth of the hardening layer | 2-10mm | Ensure that the roller maintains high hardness even after a certain amount of wear. |
| Production Process | Forging ->rough machining ->heat treatment (annealing/normalizing/quenching/tempering) ->surface quenching->finish machining | Ensure the internal quality and final dimensional accuracy of the product. |
Core Characteristics and Material
The core advantages of forged crushing rollers lie in their high wear resistance and high strength provided by materials and processing, making them particularly suitable for heavy-duty working conditions such as tire crushing.
| 4140 | C | Si | Mn | Cr | Mo | P/S |
| 0.38-0.45% | 0.17-0.37% | 0.5-0.8% | 0.9-1.2% | 0.15-0.25% | ≤0.035% |
4140 machnical property(quenching + high-temperature tempering condition)
Tensile strength: 850–1080 MPa (commonly 930–1000 MPa)
Yield strength: 700–950 MPa (commonly 740–930 MPa)
Hardness: 28–32 HRC (up to 45–50 HRC after low-temperature tempering)
Elongation: 12–18%
Reduction of area: 45–55%
Impact toughness (Charpy V): Room temperature ≥ 40–60 J, -20℃ ≥ 28–50 J
Production Procedure
Forging:
High-quality steel ingots refined by electroslag remelting are repeatedly upset and drawn using a large hydraulic press or forging hammer to rearrange the internal fiber structure, aligning it along the optimal stress direction.
Heat Treatment:
After forging, the workpiece undergoes prolonged tempering and annealing to eliminate internal stresses generated during forging, preventing deformation or cracking in subsequent machining and service.
Machining:
Rough and finish machining are performed according to the drawing dimensions to ensure the roller meets precision requirements such as cylindricity and concentricity.
Final Heat Treatment / Surface Treatment:
The critical surface quenching process is carried out to achieve a high-hardness wear-resistant surface layer.
Detailed Photo
Primary Shredding: Twin-shaft shredder, which shreds whole tires into 50–100 mm rubber chips.
Secondary Shredding: Single-shaft / multi-shaft shearing rollers, separating rubber from steel wire.
Tertiary Fine Grinding: Grinding rollers, producing rubber powder (used for reclaimed rubber and modified asphalt).
Main Equipment
Eternal company own heavy duty workshop 8,000 square meters ,till now more than 100 sets machine facilities have been installed. Main facilities are listed as follows : 2000 tons fast forging press machine , heat treatment furnace (including 1200℃ high temperature furnace) , 10 meters quenching tank , 500 tons straightening machine , 6 meters middle-frequency surface quenching machine, 3-11 meter CNC horizontal lathes, CNC machining center, 10 meters deep hole boring machine, 10 meters honing machine , including all kinds inspection and test tools etc.
Machining facility
Inspection facility
