RE: Nitrogen flow rate in SLSs machines

From: David K. Leigh (
Date: Mon Jan 20 2003 - 16:56:07 EET

A nitrogen generator works fine for the majority of materials. If you need
to inert your machine to less than 1% oxygen, then you start running into
problems. You will need to add a large tank to pump your nitrogen into for
capacitance to cover the initial "purge" inerting phase. Where we are
located, it is actually cheaper and more effecient to use bulk nitrogen, but
different locations require different measures.

David K. Leigh (254) 933-1000
Harvest Technologies, Inc. fax (254) 298-0125
Rapid Prototyping Services

  -----Original Message-----
  From: []On Behalf
Of Francisco Gorlero
  Sent: Friday, January 17, 2003 11:59 AM
  Subject: Nitrogen flow rate in SLSs machines

  Hy everybody
  We are runing two SLS machines a 2000 and a 2500Plus. Actually we are
inerting them with liquid Nitrogen and we are thinking to change to a
NItrogen generator and we are having doubts about power, Flow, Compressor
needed ,how does it work etc.
  Has anyone done this?
  I will apreciate any comments.
  Thanks in advance.

  Francisco Gorlero -
  Técnico em Prototipagem Rápida
  ROBTEC São Caetano do Sul -
  Rua Herculano de Freitas, 57 - Bairro Fundação
  09520-280 - São Caetano do Sul - SP
  Telefone: 55 0xx11 4226-3500 - Fax: 55 0xx11 4226-3501

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