Powder feeder 7103 intended to provide a controlled feed of metal and ceramic powder materials in the laser powder coating and plasma spraying complexes.
Main features
- The feeder weight without powder is no more than 4 kg. Small size and weight allows you to place up to four feeders next to the working tool (plasma gun, laser head). This significantly reduces the powder path in the process.
-
Two basic operation modes: frequency and pulse.
When in frequency mode, the feed is continuous, with powder flow rate set for time unit. The flow rate is set manually (using the built-in operator panel) or remotely.
When in pulse mode, the powder is fed in separate portions with a predetermined mass at predetermined times. Pulse mode intended for operating in laser surfacing complexes. It is possible to synchronize powder portion with continuous sequence of laser beam pulses. The first laser pulse melts the substrate and the powder and the next ones do heat treatment of melt zone in order to obtain the desired structure and properties of the resulting material at every surfacing step.
-
Argon, nitrogen and air can be used as a transport gas.
When in pulse mode, the gas flow rate must be in the range 0.01…0.25 m3/hour.
When in frequency (continuous) mode, the powder flow rate does not depends on gas flow rate. The gas flow rate determined only by the conditions of delivery to the instrument (plasma gun or laser powder head).
-
Automatic powder flow rate:
up to 3 g/min per pulse when in pulse mode
up to 180 g/min when in frequency (continuous) mode
- Stability of powder feeding is not worse than 5% within the whole range, but not worse than 1 g/min when in frequency (continuous) mode within the whole range.
- It is possible to store feeder performance dependencies for basic powders within the limits of the powder flow control.
- The feeder is equipped with a MODBUS RTU interface.
Technical data
| Speed of the dosing wheel, rpm | 1…40 |
| Controlled powder flow rate, g/min | |
| - pulse mode: | 0…3 |
| - frequency (continuous) mode: | 0…100 |
| Transporting gas | argon, nitrogen, air |
| Working gas inlet pressure, kPa | 30…300 |
|
Hopper volume, l Note: can be changed at the customer request.
|
0.5 |
|
Maximal weight, kg
Note: when using a hopper of the above capacity and
not including powder weight. The total weight depends on
powder density.
|
4.0 |
| Power supply voltage, VDC | 12…30 |
| Maximal power consumption, W | 30 |
Requirements for powder materials
-
Powder dispersion should correspond to the following ranges, μm:
- 20…63
- 40…80
- 40…100
- Flowability of powders should be not less than 0.5 cm3/s;
- the powder temperature should be in the range from +10 to +50°С.
- The difference between the gas temperature and the ambient temperature should not be greater than ±2°С;
- Before filling in the feed hopper the powders must be calcined at the temperature specified by the powder certificate.
Package Options
- For the supply of metallic and ceramic powder materials to the weld zone as part of a laser powder welding complex. Two operation modes: frequency (continuous) and pulse. Pulsed mode is intended for the partial supply of powder in the process of surfacing. Surfacing is performed in the mode of laser power modulation. The pulse method of surfacing is used to control the structure and properties of the deposited material directly in the process of surfacing.
- For the continuous supply of metallic and ceramic powders to the plasma gun (torch) as part of a complex of gas-thermal powder spraying. To produce composite materials, up to 4 powders can be injected simultaneously.
Control methods
- By built-in control panel.
- By analog input (voltage 0…30 VDC) and digital inputs (input voltage 9…30 VDC).
- By USB connector.
- By RJ-45 connector via MODBUS RTU network.
Documents
 |
User Manual (HTML, Russian, Version 1) |
 |
User Manual (PDF, Russian, Version 1) |