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Air Jet Erosion Tester
Designed to determine the erosive mass loss of materials, and to study the erosion resistance of components used in the energy, aerospace and transport industries.
The Ducom Air Jet Erosion Tester allows you to reproduce and control a wide range of operating parameters:
- Temperature: from 23 to 1200°C
- Particle flow speed: from 30 to 200 m/s
- Particle flow: from 2 to 300 g/min
- Particle impact angle: 15 to 90 degrees, which matches the actual working conditions in the above-mentioned industries.
The Ducom Air jet Erosion Tester allows testing to ASTM G76-13 and ASTM G211-14 standards.
Erosive wear test at room and elevated temperatures
Samples after high temperature erosive wear test
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Application
- Gas turbine blades in a power plant;
- Wear-resistant coatings for the edges of turbine blades and helicopter blades;
- Boiler pipes, in coal energy;
- Erosion-resistant coatings on internal surfaces used in oil and gas pipelines;
- Erosion-resistant paints and varnishes used in the transport industry.
FUNCTIONAL FEATURES OF THE INSTALLATIONHigh temperature tests:
The samples are heated using a high-temperature furnace with the ability to heat up to 1200° C. The air flow carrying particles can be heated to 1200° C using a spiral heater.
Possibility of adjusting the flow rate and particle flow rate:
The particle flow rate is controlled by a motor, a gear head and a belt assembly that connect under the hopper. The high-speed motor provides a flow rate in the range from 2 to 300 g/min. and flow rate up to 200 g/min.
Adapter for determining the mechanical characteristics of a sample:
Used to determine the tensile strength and fatigue strength of gas turbine components due to erosion by solid particles. A typical sample for tensile/bending testing has dimensions of 75x25x5 mm (other sample sizes are optional). The angle of attack of the particle is from 0 - 75 degrees. The distance from the nozzle to the sample is from 10 to 50 mm.
OPERATING PRINCIPLE OF THE INSTALLATIONDucom Air Jet Erosion Tester consists of a compressed air flow control unit, a powder supply unit (hopper, blower, gear motor system, mixing chamber, nozzle), a temperature control unit (air heater, sample heater oven), a sample installation unit and a collection device powder (tray and exhaust air filter).
Diagram of a device for determining erosive wear DUCOM Air Jet Erosion Tester
In the mixing chamber, compressed air from the pneumatic regulator and solid particles from the feeder are mixed. The compressed air carries the solid particles in the steel pipe and exits through a nozzle connected to the pipe. Due to the difference in the diameter of the tube (larger) and the nozzle (smaller), directed particle flows are created that act on the sample. The length of the tubes is sufficient to avoid turbulence in the flow. The particle impact speed is controlled by changing the compressed air pressure. The rate of particle exit is controlled by the speed of the motor in the powder supply unit.
Test modules- High temperature module (options: room temperature, up to 600, 800 and 1200° C);
- Motorized stage for setting the angle of attack of particles;
- High particle flow rate module (up to 300 g/min)
Key BenefitsSafety
A dust collection chamber with a hot air exhaust system ensures safe working conditions. Reliable thermal insulation avoids direct exposure to high temperatures.
Easy to use
Easy replacement of nozzle and samples after testing. The ability to pre-program test parameters (particle flow rate, particle feed rate, sample temperature, test duration and angle of attack) allows the user to create experimental scenario templates. The pneumatic control system ensures automatic opening and closing of the furnace.
Modular system
The installation is designed on a block-modular principle. The user has the opportunity to purchase a basic kit and equip it with optional modules in accordance with emerging tasks.
Control and data acquisition systemThe unit is equipped with a state-of-the-art electronic controller that controls particle feed, air flow and test time at ambient temperature. The particle flow rate is controlled by the motor frequency and displayed on the control panel. The pressure of the air stream determines the speed of particle flow.
In the high-temperature module, the furnace is integrated into the unit. During high-temperature tests, the furnace is moved using pneumatic drives. This module allows you to control and display the sample temperature using built-in thermocouples.
SpecificationsCharacteristic Dimension Meaning Comments Particle speed m/s 30 – 200 - Particle flow g/min 1 – 300 - Attack angle Degrees 15 – 90 Other angles on request Nozzle diameter Mm 1.5 Nozzle opening 2 or 3 mm for 800°C and above Sample size mm 25x25x5 (ASTM G76) 75x25x5 (ASTM G211-14) Holder can be provided upon request Temperature ℃ 23 – 1200 Optional: contains heating chamber and sample temperature sensor Particle size µm 50 - 300 Aluminum oxide particles. Particle size selection should ensure no clogging Power V/Hz/Ø 415/50/3 Only for systems with elevated temperatures 220/50/1 For ambient temperature systems only Air pressure bar 1.5 The compressor is provided upon the Customer's request CONTENTS OF DELIVERYBasic delivery set Ducom Air Jet Erosion Tester (ASTM 676 or ASTM 6211-14)
- Sample pick-up device for high temperature modules - 3 sets
- Sample gripper for testing at room temperature - 1 set
- Nozzle ø 1.5 mm for high temperature testing – 2 pcs.
- Nozzle ø 1.5 mm for testing at room temperature – 3 pcs.
- Test samples – 20 pcs.
- Abrasive – 10 kg.
- Temperature sensors – 2 sets.
- Particle velocity measurement module – 1 pc.
- Dust bag 1 pc.
- Compressed air supply device for cleaning the system – 1 pc.
Optional modules- High temperature module 400°C
- High temperature module 600°C
- High temperature module 1000°C
- High temperature module 1200°C
- High-speed particle feed module (2 – 300 g/min)
