The GST MP 30M-HV is a compact, fully integrated mobile liquid-fuel HVOF system developed for high-performance protective coating applications in industrial workshops and field-service environments. The platform combines process control, oxygen and fuel management, high-pressure cooling, powder feeding, electrical control, and system monitoring within a single mobile industrial enclosure.
The GST MP 30M-HV is a compact, fully integrated mobile liquid-fuel HVOF system developed for high-performance protective coating applications in industrial workshops and field-service environments. The platform combines process control, oxygen and fuel management, high-pressure cooling, powder feeding, electrical control, and system monitoring within a single mobile industrial enclosure.
Designed around the HVOF-LF process, the system supports ethanol-based fuel configuration. Its closed-loop control architecture provides stable management of critical process parameters while the touchscreen HMI, remote diagnostics, process-data recording, and configurable user access support repeatable production and efficient service.
The MP30M-E can operate as a compact mobile coating workstation or serve as the process core of a larger automated cell. Communication and I/O interfaces allow integration with industrial robots, workpiece positioners, soundproof spray booths, exhaust and filtration units, and other project-specific peripheral equipment.
The MP30M-E is built as a compact mobile HVOF-LF process platform. The current product configuration integrates the principal process, cooling, fuel, powder, and control functions inside one mobile industrial cabinet, while robots, positioners, spray booths, and filtration equipment can be added according to the production task.
Monoblock
Compact mobile / monoblock HVOF-LF process platform
The process cabinet integrates the main HVOF-LF functional modules into a single mobile enclosure. The architecture reduces installation complexity and allows the equipment to be deployed in workshops or field environments while maintaining industrial-grade process control and service access.
PLC-based
Closed-loop process control
The MP30M-E uses a PLC-based control architecture developed for stable HVOF-LF operation, process transparency, and traceability. Critical parameters are monitored continuously and displayed through the operator HMI. Approved operating ranges for each configured torch can be stored in the control system to reduce the risk of operation outside validated conditions.
Closed-loop
Mass flow control of process gases
The gas module supplies, regulates, and monitors the process gases required for HVOF operation. Accurate gas control directly influences combustion stability, flame velocity, particle acceleration, coating density, and process repeatability. Closed-loop mass-flow regulation is used to maintain consistent operating conditions.
Ethanol
Supported liquid fuel
The liquid-fuel module provides controlled delivery of ethanol to the HVOF torch according to the selected system configuration. Fuel supply is coordinated with oxygen flow, ignition, safety logic, and process recipes through the central control system.
High-pressure
Cooling-water circulation with continuous monitoring
HVOF-LF torches operate under high thermal load and require continuous forced cooling. The MP30M-E incorporates a high-pressure cooling-water circuit with continuous monitoring of the operating conditions required for reliable torch performance.
Oxygen (O₂)
Oxidizer
This module provides the process interface between the mobile cabinet and the HVOF torch. It manages the high-pressure oxygen circuit, liquid-fuel lines, ignition circuit, cooling-water connections, and auxiliary process interfaces required for stable HVOF-LF operation.
I/O interfaces
Robot integration through communication and I/O interfaces
The electrical module contains the PLC-based hardware and software used to coordinate the complete system. Closed-loop control algorithms supervise critical process variables, while communication and I/O interfaces provide connectivity to industrial robots, filtration systems, workpiece manipulators, and other external equipment.
Rotating-disk
Precision rotating-disk dosing system
The powder feeder uses a precision rotating-disk dosing mechanism for stable and adjustable powder delivery. Powder is transferred into the carrier-gas stream and delivered to the HVOF torch. Carrier-gas flow is regulated by a mass flow controller, while hopper weight is monitored by a strain-gauge load sensor and displayed in real time on the HMI.
Project-specific
Final configuration
The MP30M-E control architecture supports approved HVOF-LF torch configurations with predefined operating limits and validated process ranges stored in the control system. The current published configuration identifies the GST Et-Gun for ethanol-fueled HVOF-LF operation. Additional HVOF-LF torch configurations can be integrated on a project-specific basis after technical confirmation by GST.
The GST Et-Gun is a liquid-fuel HVOF torch optimized for ethanol-based operation. Its combustion chamber is designed to operate at elevated pressure of approximately 13 bar, generating a high-velocity supersonic jet for efficient particle acceleration. The configuration is intended for producing dense protective coatings with high bond strength, low porosity, and high microhardness.
| Parameter | Value |
|---|---|
| Fuel | Ethanol |
| Oxidizer | Oxygen (O₂) |
| Approx. combustion pressure | 13 bar |
| Spray deposition rate | 60–170 g/min |
| Cooling water pressure | 10 bar minimum / 13 bar recommended |
| Cooling water inlet temperature | 10–21 °C |
| Cooling water flow rate | 28–35 l/min |
| Maximum oxygen flow rate | 700 Nl/min |
| Maximum ethanol consumption | 40 l/h |
| Maximum nitrogen carrier gas flow | 20 Nl/min |
For applications configured around the Et-Gun, ethanol provides an alternative liquid-fuel route to conventional kerosene HVOF. According to the current GST product configuration, the principal advantages include stable combustion behavior, cleaner operation, global fuel availability, and reduced operating requirements in selected process areas.
The MP30M-E is intended for HVOF-LF applications where dense, wear-resistant and corrosion-resistant protective coatings are required together with flexible equipment deployment. Final suitability depends on the coating specification, feedstock, substrate, component geometry, and approved process parameters.
Typical HVOF applications include wear- and corrosion-resistant coatings for valve components, pump shafts, drill tools, sealing surfaces, and other parts exposed to abrasive or erosive service conditions.
Liquid-fuel HVOF can be used for high-performance carbide and metallic coatings on landing-gear components, turbine-related parts, and other wear-critical aerospace hardware where coating density and repeatability are important.
Typical applications include protective coatings for turbine seals, wear rings, boiler-related components, and other parts subject to erosion, wear, or demanding thermal-mechanical service conditions.
The mobile architecture is particularly relevant for repair and maintenance work where the HVOF process equipment must be deployed close to the component or moved between workshop areas. Appropriate spray containment, ventilation, filtration, and safety measures remain required.
The MP30M-E can also be integrated as the process core of a robotic HVOF cell, combining the mobile process cabinet with an industrial robot, workpiece positioner, soundproof booth, exhaust filtration, and additional monitoring equipment.
The GST MP30M-E Ethanol is a compact mobile ethanol-fueled HVOF thermal spray system designed for on-site coating, repair, and maintenance of large or difficult-to-move components.
It integrates the Et-Gun, ethanol and oxygen control, powder feeding, cooling, safety interlocks, and process monitoring into a transportable platform.
Ethanol-fueled HVOF provides a wider operating window, higher combustion-pressure capability, reduced oxygen and cooling demand, and cleaner combustion compared with conventional kerosene HVOF. This enables precise control of particle velocity and temperature while supporting dense, high-integrity coatings.
The current configuration works with the GST Et-Gun for ethanol-fueled operation. Additional HVOF-LF torches may be integrated on a project-specific basis after technical confirmation.
Main benefit: Mobile high-quality HVOF coating with cleaner ethanol combustion, reduced oxygen and cooling demand, and the flexibility to process large or difficult-to-move components directly on site.
Compared with conventional kerosene HVOF, the ethanol-fueled configuration can reduce oxygen consumption by approximately 30–50% and cooling-power requirements by up to 50%, depending on the spray parameters and coating material.
Project-specific configurations can include industrial robots, workpiece positioners, soundproof spray booths, exhaust and filtration units, and additional monitoring equipment.
|
System type
|
Compact mobile / monoblock HVOF-LF process platform |
|
Installation environment
|
Industrial workshop and field-service use |
|
Control system
|
PLC-based closed-loop process control |
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Remote diagnostics
|
Remote-access module supported |
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Process data
|
Acquisition, visualization, reporting, and complete recording |
|
User management
|
Multi-level password-protected access |
|
Process-gas control
|
Closed-loop mass flow control |
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Supported liquid fuels
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Ethanol, depending on approved project configuration |
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Oxidizer
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Oxygen (O₂) |
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Fuel supply
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Integrated liquid-fuel supply and control system |
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Cooling system
|
High-pressure cooling-water circulation with continuous monitoring |
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Powder feeding
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Precision rotating-disk dosing system |
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Carrier-gas control
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High-accuracy mass flow controller |
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Powder-level monitoring
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Strain-gauge load sensor with real-time HMI indication |
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Process
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Liquid-Fuel High Velocity Oxy-Fuel (HVOF-LF) |
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Final configuration
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Project-specific |
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Operator interface
|
Graphical touchscreen HMI |
|
Robot integration
|
Supported through communication and I/O interfaces |
|
Peripheral integration
|
Positioners, spray booths, exhaust/filtration and monitoring equipment |
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