Presentation of the equipment's characteristics

Cold spraying is a new process in the field of surface spraying. Its technical process is to accelerate plastic or plastic-containing powder particles to 200-1500m/s through a carrier gas and then impact the substrate to form a coating. The carrier gas is usually compressed nitrogen or nitrogen. The temperature during cold spray deposition is much lower than the melting point of the powder. The deposition process can maintain the solid state characteristics of the powder, with almost no oxidation and no phase change. Compared with other spraying processes, cold spray coatings have high density, high bonding strength with the substrate, and can deposit thick coatings. It has gradually become a potential surface coating preparation technology and has attracted attention from fields such as aviation, aerospace, weapons, ships, semiconductor devices, and additive manufacturing.

processed samples

Advantages of cold spraying

  1. The most important feature of cold spraying that distinguishes it from other spraying methods is that the coating material is not melted and is formed based on physical methods. Compared with arc spraying, plasma spraying, and HVOF spraying, cold spray coatings are almost not oxidized and the coating is dense. The conductivity of cold sprayed pure copper coatings can reach 90% of the bulk material, while the conductivity of flame sprayed and HVOF sprayed coatings is less than 50% of the bulk material;
  2. High deposition efficiency (some materials can reach more than 95%);
  3. Low oxide content;
  4. Dense coating;
  5. High thermal conductivity and high conductivity coatings can be prepared;
  6. Small thermal impact on the substrate;
  7. Grain growth can be ignored (nanostructure can be maintained);
  8. Close to forging structure (higher hardness than traditional coatings), the spraying process does not cause changes in phase and chemical composition;
  9. Nozzles of different specifications can be selected;
  10. Coating thickness can reach more than 10mm;

Cold spraying applications

  1. Special parts defect repair, automotive parts defect repair
  2. Wear-resistant coating (CrC-NiCr, WC-Co)
  3. Aerospace-fatigue-resistant coating
  4. Electronic instruments-surface conductive coating (copper), magnetostrictive coating, electromagnetic field (EMF) shielding protection

 

Cold spray principle
Typical microstructural characteristics of cold spray coatings
ParameterValue
Working GasN₂ (He optional)
Working Pressure≤5 MPa (For medium and low-pressure cold spraying ≤3.2 MPa, please consult the seller)
Gas Supply Pressure6–6.2 MPa (For medium and low-pressure cold spraying ≤3.2 MPa, please consult the seller)
Gas Temperature≤1000℃
Gas Flow Rate≤2750 SLM
Powder Feeder Range20–250 g/min (Cu) (Depending on process)
Powder Particle Size5–45 μm
Spray Distance5–75 mm
Power Consumption5–70 kW 380V/50Hz Three-phase five-wire
GSTCS-2000 Cold Spraying Equipment Parameters
EquipmentLength (mm)Width (mm)Height (mm)Weight (kg)
Main Control Cabinet16006001900430
Console500400133325
Powder Feeder500450126788
Gun Body (Excluding Nozzle)76029632039
GSTCS-2000 Cold Spraying Equipment Dimensions

Main control cabinet:
Heat for 2-5min to reach the set temperature
Closed-loop control of temperature, pressure, and flow
The main controller controls the powder feeder, gas, actuator and heating power supply in a cabinet
Multiple interlocking protection and alarm
1/0 input/output can be linked with the operating mechanism

Operation screen:
Siemens TP1200comfort 12-inch touch screen
Windows CE operating system, resolution 1280X600 pixels, including system clock
Power supply 24V DC, tolerance range 19.2~28.8V (+20%)
Equipped with 1 Ethernet interface, 1 RS422/RS485 interface, 2 USB interfaces
Manual and automatic operation interface
Temperature, pressure, flow display, recording of spraying process parameters
Process parameter storage and call
Temperature, pressure detection, system fault alarm

Powder feeder:
0.37/4.44 Liter volume (choose one)
Maximum pressure <6.2MPa
Smooth powder feeding
Powder feeding speed controllable 1-15r/min
Stirring speed controllable 1-15r/min

Cold spray gun body:
Temperature closed-loop control, pressure closed-loop control
Gun heater heating temperature <1000°C
Fluent CFD fluid mechanics simulation design Laval nozzle
Gun heater temperature measurement, center powder feeding, gun air pressure measurement, optimized design, stable and reliable
Pressure control ≤5MPa

CNC three-axis or four-axis workbench + closed soundproof and dustproof operation unit:
Workbench travel:
X axis: 450mm
Y axis: 370mm
Z axis: 170-280mm (up to 500mm as needed)
Workbench running speed:
X axis: ≤350mm/s
Y axis: ≤350mm/s
Z axis: ≤150mm/s
The workbench is operated by CNC numerical control system, and the motion program can be imported via USB or online
The fourth axis can be selected separately as needed
The cold spray operation screen is integrated on the operation panel of this unit
Cold spray 3D printing can be realized
Equipped with 4-cartridge pulse dust collector, filtration accuracy 3um dust, filtration volume 15m3, air volume 2500m3/H
Operation unit length x width x height = 1500X1200X1870mm