Changzhou Tiangong Forging Co., Ltd.
Changzhou Tiangong Forging Co., Ltd.
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Free Forged Roller Shaft for Continuous Casting and Steel Mill Equipment. Our free forged roller shafts are purpose-built to endure the extreme mechanical and thermal stresses found in continuous casting lines, hot rolling mills, and other steel processing equipment. Manufactured using high-strength alloy and carbon steels, each shaft is precision-forged to ensure superior fatigue resistance, dimensional accuracy, and long operational life under heavy loads and cyclic conditions.
Key Features:
Material Options: 42CrMo, 45#, and other custom alloy steels offering excellent toughness, hardenability, and thermal fatigue resistance.
Forging Method: Open-die forging (free forging) for dense, refined grain structure and defect-free integrity, especially critical in high-load roller applications.
Size Capabilities: Large-diameter, extra-long shafts suitable for various roller configurations—work rolls, support rolls, intermediate rolls, and pinch rolls.
Applications:
Roller shafts for continuous casting machines
Support and drive rolls in hot and cold rolling mills
Roller components in reheating furnaces and billet handling systems
| Item | Details |
|---|---|
| Product Name | Free Forged Roller Shaft for Continuous Casting and Steel Mill Equipment |
| Material Grades | - Alloy steels: 42CrMo - Carbon steels: 45# - Excellent tensile strength, fatigue resistance, and thermal stability for high-load and high-temperature operations in rolling mills |
| Forging Equipment | - Hydraulic hammers: 5T / 8T / 12T - 3600T open-die forging press for long, large-diameter roller shaft forgings - Capable of forming stepped shafts with journals, necks, and custom drive end profiles |
| Manufacturing Process | Hot Forging → Heat Treatment (Quenching + Tempering / Normalizing) → Ultrasonic Testing → Rough / Semi-Finish Machining → Final Dimensional & Surface Inspection |
| Forging Ratio | ≥ 3.0 — Ensures directional grain flow along the shaft axis for improved impact toughness, torsional strength, and long-term reliability under cyclic rolling loads |
| Applications | - Roller shafts in continuous casting machines and billet handling systems - Work rolls, backup rolls, and intermediate rolls in hot and cold strip rolling mills - Roller components for steel processing, reheat furnaces, and coil transport equipment |
| Heat Treatment Options | - Quenched + Tempered for enhanced strength, hardness, and wear resistance in dynamic rolling environments - Normalizing for uniform microstructure and improved machinability - Optional stress-relief annealing to reduce residual stress prior to finish machining |
| Testing & Inspection | - Chemical: Alloy verification by spectrometer - Mechanical: Tensile strength, yield strength, hardness, and Charpy impact tests (longitudinal & transverse) - Ultrasonic Testing (UT): 100% internal flaw detection along the shaft length - Dimensional: Concentricity, straightness, diameter tolerance, and surface finish control |
| Value-Added Services | - Pre-machining of journals, keyways, shoulders, and coupling interfaces - Complete material traceability: heat number, batch number, mechanical and NDT reports (MTC) |
The steel forgings production flow:
Raw material steel ingot into warehouse(test the chemical composition) → Cutting→ Heating(Furnace temperature test) → Heat treatment after forging(Furnace temperature test) Discharge the furnace(blank inspection)→ Machining→ Inspection(UT,MT,Visal dimension, hardness)→ QT→ Inspection(UT, mechanical properties, hardness, grain size)→ Finish machining→ Inspection (dimension)→ Packing and Marking(steel stamp, mark)→ Storage Shipment.
Packaging & Delivery
Rust-preventive coating
Heavy-duty seaworthy wooden boxes
Custom labeling and barcoding
Global shipping support with flexible delivery terms (FOB, CIF, EXW)
Frequently Asked Questions (FAQs)
1. What is your forging weight range?
We produce forged parts ranging from 100 kg to 7000 kg.
2. Do you provide heat treatment and machining?
Yes, we offer full in-house heat treatment, rough, and finish machining services.
3. Which industries do you supply to?
We serve wind energy, heavy equipment, port machinery, transmission systems, and more.
4. What is your production lead time?
With stock: Around 30 days
Without stock: 40–45 days
5. Where is your factory located?
In Changzhou City, near Shanghai, with shipping via Shanghai Port.
Request a Quote
Please send your technical drawings and requirements to us. Our engineers will review and provide you with a professional quotation and solution shortly.