JH-T3200 VRM Grinding Roller & Table Offline Hardfacing Machine
Heavy-Duty Column-and-Boom Welding Manipulator for Workshop Hardfacing & Rebuilding. Developed by JINHUA for automated and mechanized hardfacing of large industrial wear components.
Also known as a column-and-boom welding manipulator, the JH-T3200 consists of a rigid base, vertical column, horizontal boom, boom lifting mechanism, telescopic travel system, welding torch adjustment unit and integrated electrical control system.
Complete Offline Hardfacing Workstation
When combined with an optional rotary/tilting welding positioner, the system forms a complete offline hardfacing workstation for rebuilding components such as:
- Vertical roller mill grinding rollers
- VRM grinding tables
- Grinding table segments
- Cement mill wear components
- Large rollers
- Rotary wear components
- Heavy industrial parts requiring controlled overlay welding
The standard JH-T3200 provides approximately 3200 mm vertical working travel and 2500 mm horizontal boom travel, allowing the welding head to be positioned over large workpieces.
Offline hardfacing workstation — welding manipulator with rotary/tilting positioner for VRM grinding components.
Why the JH-T3200
Twelve design features that define the JH-T3200 as a dedicated offline hardfacing platform for large wear components.
What Is the JH-T3200 Hardfacing Machine?
The JH-T3200 is a column-and-boom welding manipulator designed for offline hardfacing and repair of large wear components.
Its main purpose is to accurately position and move the welding head relative to a stationary or rotating workpiece.
Instead of an operator manually supporting and moving a heavy welding torch for long welding cycles, the JH-T3200 provides controlled mechanical movement through:
- Vertical boom positioning
- Horizontal boom extension/retraction
- Welding torch fine adjustment
- Variable travel speed
- Remote welding start/stop control
When a rotary welding positioner is added, the workpiece can also rotate and tilt during welding.
This creates a coordinated hardfacing workstation where the welding manipulator controls the torch position, while the welding positioner controls the workpiece position and rotation. This configuration is particularly useful for rebuilding large grinding rollers and grinding tables in a controlled workshop environment.
Column-and-boom manipulator — vertical column, horizontal boom and torch adjustment unit.
Two cooperating systems
- The welding manipulator controls the torch position.
- The welding positioner controls the workpiece position and rotation.
Combined with an optional rotary/tilting welding positioner, the JH-T3200 becomes a complete offline hardfacing workstation.
Designed for VRM Grinding Roller & Table Repair
Vertical roller mills are widely used in cement, mining, power generation and mineral processing. Their grinding rollers and grinding tables continuously contact abrasive material under high pressure.
Over time, these components can experience:
- Abrasive wear
- Surface material loss
- Profile deterioration
- Reduced grinding efficiency
- Uneven wear
- Local damage to previous hardfacing layers
Hardfacing allows the worn surface to be rebuilt with wear-resistant alloy rather than replacing the complete high-value component.
The JH-T3200 provides the mechanical platform required to position the welding torch accurately around large VRM components during offline repair.
VRM grinding components — grinding roller and grinding table surfaces rebuilt by controlled overlay welding.
Dedicated repair station — the JH-T3200 forms the central welding manipulator of a permanent workshop station.
Offline Hardfacing Workstation
The JH-T3200 is primarily designed for offline hardfacing. The worn grinding roller or grinding table is removed from the production equipment and transferred to a dedicated repair workshop.
Compared with in-situ repair, offline hardfacing can provide greater flexibility for:
- Workpiece inspection
- Surface preparation
- Preheating
- Gouging
- Positioning
- Multi-layer hardfacing
- Profile measurement
- Post-weld processing
- Controlled cooling
For factories with a dedicated maintenance workshop or specialized hardfacing service companies, the JH-T3200 can form the central welding manipulator of a permanent repair station.
Typical Grinding Roller Repair Process
A nine-stage offline hardfacing workflow, from inspection of the worn component through to the finished profile.
Inspect the Worn Component
Evaluate the condition of the component before any material is removed.
- Base material
- Existing hardfacing
- Wear depth
- Roller profile
- Cracks
- Repair dimensions
Surface Preparation
Remove damaged or unsuitable material. Depending on the repair procedure, this may include:
- Grinding
- Machining
- Air carbon arc gouging
- Removal of damaged hardfacing
Mount the Workpiece
Place the grinding roller or other component on the welding positioner or suitable support fixture.
Position the Welding Torch
Use the JH-T3200 vertical and horizontal movement systems to position the welding head.
Set Welding Parameters
Configure the welding procedure before starting the overlay.
- Welding current
- Welding voltage
- Wire feeding
- Travel speed
- Positioner rotation speed
- Welding bead overlap
- Welding direction
Start Hardfacing
The positioner rotates the workpiece while the welding manipulator maintains the required torch position and travel.
Build the Required Overlay
Additional welding passes or layers are applied according to the repair specification.
Inspect the Profile
Measure the rebuilt surface and compare it with the required final dimensions.
Finish the Repair
Perform additional welding, grinding or machining where required.
Optional 5-Ton Welding Positioner
Convert the JH-T3200 into a complete hardfacing workstation. For grinding rollers, grinding tables and other rotary workpieces, the JH-T3200 can be combined with a JH-5TDS 5-ton welding positioner.
The positioner provides two major functions:
- Worktable Rotation — the workpiece rotates continuously during hardfacing.
- Worktable Tilting — the workpiece can be tilted to obtain a more suitable welding angle.
Combining the JH-T3200 welding manipulator and the 5T positioner allows the welding torch and workpiece to be positioned independently. This provides greater flexibility for hardfacing:
- Curved surfaces
- Roller surfaces
- Grinding table surfaces
- Side surfaces
- Complex wear zones
JH-5TDS Welding Positioner Specifications
| Parameter | Specification |
|---|---|
| Model | JH-5TDS |
| Rated Load Capacity | 5000 kg |
| Table Rotation Speed | 0.05–0.5 rpm |
| Table Tilting Speed | 0.15–0.5 rpm |
| Table Diameter | 2000 mm |
| Tilting Angle | 0–110° |
| Rotation Motor Power | 2.2 kW |
| Tilting Motor Power | 3 kW |
| Rated Center of Gravity Distance | 200 mm |
| Rated Eccentricity | 300 mm |
| Base Length | 2700 mm |
| Base Width | 1755 mm |
| Overall Height | 1715 mm |
| Machine Weight | Approx. 2800 kg |
The suitability of the positioner must be evaluated according to the actual workpiece weight, dimensions, center of gravity and eccentric loading.
How the Welding Manipulator & Positioner Work Together
The two systems perform different tasks.
| System | Main Function |
|---|---|
| JH-T3200 Welding Manipulator | Positions and moves the welding torch |
| JH-5TDS Welding Positioner | Rotates and tilts the workpiece |
| Welding Power Source | Provides welding current and voltage |
| Wire Feeding System | Supplies hardfacing wire |
| Control System | Coordinates machine operation |
For example, when rebuilding a grinding roller:
- The roller is mounted on the positioner.
- The positioner rotates the roller at a controlled speed.
- The JH-T3200 positions the welding torch over the worn surface.
- The horizontal boom provides controlled welding travel.
- The welding wire continuously deposits wear-resistant alloy.
- The torch position is adjusted as the repair progresses across the roller surface.
This creates a mechanized hardfacing process with more consistent movement than manual welding.
Technical Specifications — JH-T3200
Standard configuration data for the JH-T3200 column-and-boom hardfacing welding manipulator.
| Parameter | Specification |
|---|---|
| Model | JH-T3200 |
| Machine Type | Column-and-Boom Hardfacing Welding Manipulator |
| Main Application | VRM Grinding Roller / Grinding Table Offline Repair |
| Vertical Effective Travel | 3200 mm |
| Horizontal Effective Travel | 2500 mm |
| Main Structure | Column & Boom |
| Vertical Movement | Motorized |
| Horizontal Movement | Motorized / Variable Speed |
| Torch Fine Adjustment | Vertical + Horizontal |
| Control | Electrical Cabinet + Remote Pendant |
| Welding Control | Integrated Start / Stop |
| Standard Power Supply | 380 V, 50 Hz, 3 Phase |
| Optional Positioner | JH-5TDS, 5000 kg |
| Optional Welding Process | According to selected welding configuration |
| Installation | Fixed Offline Workshop Station |
Horizontal boom and vertical lifting speed values should be confirmed against the final technical drawing before publication.
Additional Original Machine Data
- Carriage travel speed: approximately 6 m/min
- Wire feeding range: 100–15000 cm/min
Standard machine configuration — column, boom, guide assembly and electrical cabinet.
Main System Configuration
A complete JH-T3200 hardfacing workstation can include the manipulator, the welding system and optional equipment.
Machine Platform
- Machine base
- Vertical column
- Horizontal boom
- Boom lifting system
- Boom telescopic system
- Guide assemblies
- Rack-and-pinion drive
- Counterweight system
- Welding torch holder
- Torch fine adjustment mechanism
- Electrical cabinet
- Remote pendant
Overlay Welding Equipment
Depending on configuration:
- Hardfacing power source
- Flux-cored wire feeder
- Welding torch
- Welding cables
- Control cables
Workstation Upgrades
- 5T welding positioner
- Larger-capacity welding positioner
- Roller rotator
- Hardfacing oscillator
- Flux feeding/recovery system
- Preheating system
- Automatic air carbon arc gouging system
- Fume extraction system
Advantages of the JH-T3200
Eight practical advantages for workshops rebuilding large, high-value grinding components.
Large Working Envelope
3200 mm vertical travel and 2500 mm horizontal travel provide a large operating range for heavy wear components.
Rigid Mechanical Structure
Stress-relieved and precision-machined structural components provide a stable platform for continuous welding.
Variable-Speed Welding Travel
Horizontal travel speed can be adjusted according to the hardfacing procedure.
Fine Torch Positioning
The front torch adjustment unit provides additional positioning flexibility.
Remote Operation
The operator can control major machine movements and welding functions from a remote pendant.
Workpiece Positioning Options
A 5-ton rotary/tilting positioner allows large workpieces to be rotated and tilted into more suitable welding positions.
Modular Welding Integration
Different welding power sources and hardfacing systems can be integrated according to the customer’s repair process.
Suitable for Dedicated Repair Workshops
The machine can form the central platform of a permanent VRM grinding component refurbishment station.
JH-T3200 vs. JH-350 Series
Both systems can be used for industrial wear-component rebuilding, but they are designed for different maintenance strategies.
| Feature | JH-T3200 | JH-350 Series |
|---|---|---|
| Main Positioning | Heavy-duty offline workshop station | Portable in-situ / offline repair |
| Structure | Steel column & boom | Lightweight modular aluminum cross-slide |
| Installation | Fixed | Portable / removable |
| Main Workpieces | Grinding rollers / grinding tables | Roller presses / VRM / large wear components |
| Vertical Travel | 3200 mm | Depends on model |
| Horizontal Travel | 2500 mm | Modular |
| Welding Positioner Integration | Major configuration | Application dependent |
| Automatic Gouging | Optional external integration | Dedicated integrated models available |
| Best Application | Dedicated refurbishment workshop | Flexible field maintenance |
| Main Advantage | Stability & large working envelope | Mobility & process flexibility |
Choose JH-T3200 If You Need:
- A permanent repair workshop
- Large workpiece handling
- Grinding roller rebuilding
- Grinding table hardfacing
- Rotary/tilting workpiece positioning
- Stable long-duration welding
Choose JH-350 If You Need:
- Portable equipment
- In-situ repair
- Faster on-site installation
- Integrated automatic gouging
- Flexible movement around installed equipment
Tell Us Your Workpiece Requirements
For a technical proposal, please send the following information.
- 01 Workpiece TypeGrinding roller / Grinding table / Table segment / Other
- 02 IndustryCement / Mining / Power / Other
- 03 Workpiece Diameter
- 04 Workpiece Height / Width
- 05 Total Weight
- 06 Center of Gravity, if available
- 07 Worn Area Photos
- 08 Base Material
- 09 Existing Hardfacing Material
- 10 Required Overlay Thickness
- 11 Required Hardness
- 12 Welding Wire Specification
- 13 Preferred Welding Process
- 14 Need a Welding Positioner?
- 15 Need Preheating or Gouging Equipment?
- 16 Factory Power Supply
- 17 Destination Country
Based on this information, JINHUA can determine:
- Welding manipulator size
- Welding positioner capacity
- Welding power configuration
- Wire feeding system
- Hardfacing process
- Workstation layout
- Auxiliary equipment
Request a Technical Proposal
Send your workpiece drawing, diameter, weight, wear condition and required overlay — JINHUA engineers will recommend the appropriate welding manipulator, positioner and hardfacing configuration.
We usually reply within 1–2 working days.
Frequently Asked Questions
Common questions about the column-and-boom manipulator, VRM grinding components and optional welding positioner.
A column-and-boom welding manipulator is a mechanized welding system that positions a welding head through vertical and horizontal movement.
The workpiece can remain stationary or be mounted on a rotary welding positioner.
The JH-T3200 is mainly designed for offline hardfacing of large industrial wear components, particularly vertical roller mill grinding rollers and grinding tables.
Yes. Grinding roller rebuilding is one of the main applications of the JH-T3200.
The welding manipulator can be combined with a rotary welding positioner to perform controlled overlay welding around the roller surface.
Yes. Grinding tables or table components can be hardfaced when mounted on a suitable rotary positioner or fixture.
The actual positioner capacity must be selected according to the workpiece weight, diameter and center of gravity.
The standard effective vertical travel is approximately 3200 mm.
The standard effective horizontal travel is approximately 2500 mm.
The JH-5TDS 5-ton welding positioner is an optional configuration. It can be added when workpiece rotation and tilting are required.
Yes. The specified rotation speed range is 0.05–0.5 rpm.
Yes. The standard specified tilting range is 0–110°. The suitability of a specific tilt angle depends on workpiece weight, center of gravity and eccentricity.
Yes. The JH-T3200 can be integrated with different welding power sources according to the welding process. Final compatibility should be confirmed during technical design.
A submerged-arc configuration can be integrated where required. The final system would require suitable welding power, torch, wire feeding and flux handling equipment.
Automatic gouging can be evaluated as part of a customized repair workstation.
For applications where hardfacing and automatic gouging must both be highly integrated, JINHUA’s JH-350 series may also be considered.
Yes. Positioner capacity, manipulator travel, welding head and overall workstation layout can be customized according to the workpiece.