The reliability of rebar connections is critical in modern construction, highways, and bridge projects. Traditional lapping or welding methods often struggle with insufficient strength and low construction efficiency. The YG rebar upsetting machine offers a superior solution. It cold-forges the ribbed rebar ends to increase their diameter and tensile strength. This core equipment is essential for ensuring the upset parallel thread connection’s joint strength exceeds the base material. If your goal is to boost project quality and speed up construction, this upsetting machine is indispensable.
Technical Parameter of Rebar Upsetting Machine
| Model | HDCJ-32 | HDCJ-40 | GDCJ-40 |
| Processing Reinforcement Range | 12~32mm | 12~40mm | 12~40mm |
| Motor Power | 4Kw | 7.5Kw | 4Kw |
| Max.Flow | 5.42L/min | 4.0L/min | 6.4L/min |
| Pressure | 2036KN | 3000KN | 2036KN |
| Max Working Pressure | 80MPa | 31.5MPa | 80MPa |
| Dimension | 1020*500*965mm | 1300*830*1350mm | 1300*650*965mm |
| Weight | 560Kg | 900Kg | 600Kg |
Rebar Upsetting Machine Deep Dive & Technical Edge: Achieving “Equivalent Strength Connection”
The primary function of the rebar upsetting machine is to pre-process the rebar end (the threading section) through cold extrusion upsetting. The diameter of the upset rebar increases by 3-5mm. Subsequently, a hydraulic thread rolling machine is used to thread the upset section. This upsetting-threading combination ensures the connector’s strength meets or exceeds the rebar’s base material, achieving a true “Equivalent Strength Parallel Thread Connection.”
- Upsetting Principle: The machine applies powerful upsetting force (up to 2036KN for the single-cylinder model), precisely controlling the piston stroke (140mm) using clamping tongs and a sliding mechanism.
- Structure and Workflow: It consists of a frame, clamping jaws, a cycloidal pinwheel reducer, a rib-peeling rolling head, a feeding mechanism, a cooling system, and a control box. It features fast processing speed and high processing quality.
- Core Advantage: Compared to traditional methods, upset connections offer superior quality stability and higher joint tensile strength.
- Using a large flow hydraulic pump ensures the efficiency of the upsetting process.
- Simple operation reduces the required skill level for site workers.
Q&A: Common Questions About the Upsetting Machine
Our standard single-cylinder model handles ribbed rebar from 12mm up to 32mm (Grade II and III). We also offer twin-cylinder models for larger diameters or projects demanding higher production efficiency.
An upsetting connection avoids affecting the rebar’s metallographic structure caused by welding. The joint performance is stable, strength is high, and it allows construction under various weather conditions without reliance on power or specialized welding technicians. It also reduces concerns about environmental friendliness.
Direct threading reduces the rebar’s cross-sectional area, lowering the connection point’s strength. Using a rebar upsetting machine increases the rebar end diameter. This compensates for the lost area during threading. It ensures the joint strength is greater than the rebar base material, confirming structural reliability.
Wide Applications and Success Story: The Choice for High-Requirement Projects
The rebar upsetting machine is widely used in national key projects that demand strict structural joint strength and processing quality:
- Roads, Bridges, and High-Speed Rail: Used for bridge foundations, main beams, and high-speed rail piers. These areas require extreme seismic resistance.
- Subways and Tunnels: The stability and compactness of the upset connection are crucial in underground construction.
- Nuclear and Major Power Plants: Projects with the highest standards for structural safety.
Success Story: Mohamed’s Project in Saudi Arabia
Mohamed, a project manager for a major infrastructure company in Saudi Arabia, was building a high-specification urban light rail system. The specification demanded that “joint strength must exceed the base material by 125%.” Traditional welding could not meet this standard.
Mohamed adopted YG’s twin-cylinder rebar upsetting machine solution. First, the rebar straightener machine pre-processed the rebar. Then, the upsetting machine quickly and efficiently handled thousands of large-diameter rebars. Through upsetting, they successfully achieved the required ultra-high tensile strength. The project passed strict quality inspection. This ensured the project met international standards for processing accuracy and was delivered three months ahead of schedule.
How Does the Rebar Upsetting Machine Boost Construction Efficiency and Processing Quality?
Boosting efficiency is a core need for all construction projects. YG’s upsetting machine streamlines the upsetting parallel thread connection workflow in several ways:
- High Upsetting Force, Fast Forming: The upsetting force is powerful and stable. Processing a single rebar end takes very little time.
- Continuous Operation Capability: The machine includes a cooling system. It supports long periods of continuous work, making it suitable for large-scale production.
- Synergy with Other Equipment: Upset rebar can be directly sent to a hydraulic thread rolling machine for threading. This forms a seamless workflow.
Single-Cylinder vs. Twin-Cylinder Rebar Upsetting Machine Selection Guide
Clients often ask: Should my project use a single-cylinder or twin-cylinder rebar upsetting machine?
- Single-Cylinder Model: This is more compact and lighter weight (approx. 560Kg). It has a small footprint. It suits medium-to-small projects (12mm-32mm rebar) or confined sites like tunnels and subways.
- Twin-Cylinder Model: Offers higher upsetting force and faster production efficiency. It is best for large-diameter rebar (e.g., 40mm) or extra-large projects (High-Speed Rail, Nuclear Power). It significantly accelerates construction progress.
- Decision Advice: If your project involves a large volume of the same rebar size, the twin-cylinder machine provides higher cost-effectiveness.
YG Machinery Strength, Service, and Trust: YG Machinery’s Quality Commitment
YG Machinery is dedicated to providing industry-leading rebar processing equipment. Our rebar upsetting machine is rigorously tested. It is designed to achieve the highest standards of processing accuracy. We offer:
- Quality Service Guarantee: Detailed guidance on the upsetting and threading process, ensuring your team quickly masters the technology.
- Customized Solutions: We recommend the ideal single-cylinder or twin-cylinder model based on your rebar specifications and project size.
- Comprehensive After-Sales Support: Fast response technical support, original spare parts supply, and routine maintenance guidance.
Client Testimonial: “The YG upsetting machine significantly improved the connection quality on our building durability projects. Its efficiency and processing accuracy are the best in the industry.” — Hernando A., Large Contractor in Mexico City.
Get a Free Quote and Customize Your Exclusive Rebar Upsetting Machine Solution Now! Increase Your Project Reliability and Construction Progress.
