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PREP powder production unit for additive manufacturing

Technical features of PREP unit:
● Modern drive allows rotation of the sprayed feedstock at a speed of 40,000 rpm enabling a larger yield of fine powders for AM;
● Advanced system for cleaning and cooling the gas;
● Advanced plasmatron with improved power source for increased efficiency, stability and productivity of the working process, and higher quality of produced powders;
● Digital control system to modify production parameters per user’s specific needs.

PREP powder production unit for additive manufacturing

Information request

PREP powder production unit for additive manufacturing

Photos

Type

Centrifugal spraying of feedstocks melted by a plasma torch in an inert gas environment

Feedstock material

Ti alloys, Ni based superalloys, intermetallic compounds

Size of feedstock:

- diameter

55±1 mm

- length

700 mm

- straightness

0.05 mm

- roundness

0.025 mm

- cylindricity

0.025 mm

- Feedstock surface roughness along the generatrix

< Ra0.8

- Feedstock’s end roughness

< Ra1.6

Rotation frequency of the feedstock

40000 r/min ± 5 %

Drum rotation drive

Asynchronous

Inner diameter of atomizing chamber

2670 mm

Productivity

Not less 3 feedstocks per hour

Operating Environment

Helium – Argon (9:1)

Plasma melting system - type:

Independent heat source – plasmatron

Electrical equipment:

- voltage

380 V

- frequency

50 Hz

- power

300 kW

Plasmatron rated power

120 (Max 140) kW

Arc current

800….1600 А

Vacuum system:

5*10-5 pumping time 40 min

Number of loaded feedstocks

Max 100 units

Cooling system

Modular closed "water-water"

Gas system - inert gas (mixture)

Combined special system. Modular.

PREP advantages vs Gas Atomizing:

  • Greater sphericity
  • Satellites-free
  • No gas porosity
  • Better flowability
  • 100 times less inert gas consumption
  • Bigger portion of fraction for additive manufacturing:
  • Titanium alloys:
  • Fraction size -80+63 – 43%
  • Fraction size -63+40 μm – 37%
  • Nickel Alloys:
  • Less than 63 μm - 90%

Ti-6Al-4V Alloy atomized by PREP:

Operation process