Uniquecoat® G4™
Gravimetric Powder Feeder
A versatile gravimetric powder feeder engineered for excellence in thermal spray processes such as HVOF, HVAF, Plasma, Cold Spray, Laser Cladding, and a broad spectrum of industrial applications. The G4 automatically maintains the feed rate, adjustable in standard or customary units. Its patented, seal-free feeding mechanism ensures smooth, pulseless powder flow that remains consistent over time.
G4 Powder Feeder
Key Features
Gravimetric G4 Powder Feeder
🟢 Automatic Feed-Rate Control
Maintains the desired feed rate, configurable in grams per second, grams per minute, kilograms per hour, or pounds per hour.
🟢 Gravimetric and Volumetric Modes of Operation
Allows flexible selection between gravimetric and volumetric feeding, depending on process requirements.
🟢 Patented Powder Feed Design
Ensures smooth, pulseless powder flow and allows quick powder start and stop with no afterflow.
🟢 High Feed Accuracy
Delivers precise powder delivery with most powders.
🟢 Quick Start/Stop
Starts powder flow quickly and stops cleanly with no powder afterflow, providing controlled and efficient operation.
🟢 Powder Calibration Function
Enables quick powder startup at the target feed rate, eliminating long stabilization periods.
🟢 Built-In Load Cell Calibration
Enables quick recalibration and maintains precise measurement accuracy.
🟢 Feed Rate Startup Ramp
Provides controlled increase or decrease of powder feed rate over a selected time period, enabling uniform coating thickness on tapered parts or discs.
🟢 No Wearing Seals
Seal-free design eliminates consumable parts and reduces maintenance requirements.
🟢 Large Recipe Storage Capacity
Stores and recalls multiple powder calibration profiles for fast process setup.
🟢 Dump Powder Function
Allows quick, convenient hopper emptying at the touch of a button.
🟢 Setpoint & Real-Time Feed-Rate Display
Provides clear visibility of both setpoint and live process feedback.
🟢 Touchscreen Interface
Intuitive control panel for simple, user-friendly operation.
🟢 Backpressure Insensitivity
Maintains stable, uniform powder flow regardless of backpressure variations.
🟢 ASME Code Compliance
Designed and built in accordance with ASME pressure vessel standards.
🟢 Optional Add-Ons
– Carrier-gas mass flow controllers
– Analog I/O or RS-232 interface for remote control and automation
Applications:
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HVAF
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HVOF
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Plasma
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CS
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Laser Cladding
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Additive Manufacturing
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Other Industrial Applications
Performance Demo
G4 Feeding Performance
This test was performed to evaluate powder flow stability and identify any fluctuations in feed rate. During the test, powder was collected in a bowl placed on a scale with 0.01 g resolution and direct strain-gauge output to a computer. The plotted curves are direct, unfiltered scale readings showing collected powder mass over time. Because the feeder is a gravimetric loss-in-weight feeder, the measured mass gain is presented as equivalent feeder weight loss.
Amperit 558.074, WC-10Co-4Cr, 15-45 µm
Amperit 658.067, WC-10Co-4Cr, 5-15 µm
