Powder Atomization Plant

TMA-W is a family of water atomizers designed to produce metal powders of irregular shape for use in industrial, chemical, soldering paste, resin filter, MIM and sintering applications.
 
The atomizer is based on an induction furnace working in a closed chamber under protective atmosphere, where the molten metal is poured and hit by a high pressure water jet, producing fine and deoxidized powders.
 
The induction heating ensures a very good homogenization of the melt thanks to the action of magnetic stirring during the molten phase.

The die unit is equipped with an auxiliary induction generator that allows the cycle to be restarted in the event of an interruption.

After the melting and homogenization steps, the metal is poured vertically through an injection system located at the bottom of the crucible (nozzle).
 
Multiple high-pressure water jets are directed and focused onto the metal stream to ensure rapid solidification of the alloy into a fine powder.
 
Real-time process variables such as temperature, gas pressure, induction power, oxygen ppm in the chamber and many others are displayed in both numerical and graphical formats on a monitoring system for intuitive understanding of the work cycle.
 
The system can be operated manually or in fully automatic mode thanks to the programmability of the entire set of process parameters through a user-friendly touch screen interface.
 
The monitoring system can be easily connected to the factory network via Ethernet.

Technology & Features

Metals and Field of Application

• Atomized Metals: Cu, Zn, Au, Ag and their alloys like Bronze and Brass.
• Field of Applications: industrial, chemical, soldering paste, resin filters, MIM and sintering applications

  Melting

• Advanced Self Tuning thermoregulation (AST™) with exact temperature control of the melted alloys
• S-type thermocouple positioned inside the stopper
• Two Set-Points available: Homogenization and Casting Temperature
• Medium frequency induction heating stirs the melted alloy and leads to a perfect homogeneity
• Pulse Stirring Management (PSM™) for an extremely low frequency stirring
• Second generator for indipendent heating of the die

Atomizing Process

• Pressure / Flow regulation of water jet

Inert gas

• The melting process can be protected with Argon, Nitrogen or Helium

Special features

• Automatic self-test of vacuum sealings, o-rings, seals and filters
• Factory Network Connection: RS232, Ethernet
• Troubleshooting: Connecting to an on-line via modem

Options

• Oxygen Analyzer: Measurement of oxygen present in the melting chamber
• Lid Locking System: Lock chamber (temperature-dependent)

Technical data

	TMA20w	TMA40w
Crucible working capacity	up to 7,5 kg Bronze 9 kg Silver 17 kg Gold	up to 40 kg Bronze 50 kg Silver 90 kg Gold
Atomizing media	water	water
Crucible volume	up to 1500 cc	up to 7000 cc
Induction power	20 kW	40 kW
Maximum Pressure	up to 300 bar	up to 300 bar
Max. temperature	1600 °C	1600 °C
Process time	30 minutes	50 minutes
Autotest with data report
Monitoring system for data acquisition
Vacuum leakage detector
Oxygen Analyzer
Remote assistance
Main alloys	Gold (Au), Silver (Ag), Copper (Cu), Brass, Bronze, Aluminium (Al) and their alloys

 Provided -  Available on request