Hi Poh,
You may be referring to the Dragon by Surf Systems. Unfortunately neither
the machine nor the company are in existence, as far as I know.
It was based on my original concept of using a hot air gun as the reflow
zone instead of the usual hot plate of an infra red reflow oven. The
concentrated flow of hot air over the assembly gave a profile approaching
that of a wave solder machine.
Funnily enough I offered this idea to another reflow oven firm, some two
years before I worked at Surf, and they said 'very interesting' and made me
redundant that afternoon. Was it something I said? They are no longer in
this market, by the way.
Regards
Eric Dawson
> -----Original Message-----
> From: pohkh [SMTP:[log in to unmask]]
> Sent: Thursday, February 27, 2003 10:20 PM
> To: [log in to unmask]
> Subject: Re: [TN] : Shining smooth solder joint on ENIG or Gold
> plating Board.
>
> Hi Mike,
>
> You remind me of someone told me that there is reflow machine that provide
> short liquidus time. I do not recall the brand name of the machine, but I
> understand it is an European machine.
>
> I see the reflow profile is having around 20 seconds liquidus time.
>
> Poh
>
>
>
>
> --- Mike Fenner <[log in to unmask]> wrote:
>
> > Keeping the time over liquidus as short as possible and rapid
> > cooling as
> > possible will help, subject to the possibilities of your system
> >
> > Regards
> >
> > Mike Fenner
> >
> > Applications Engineer, European Operations
> > Indium Corporation
> > T: + 44 1908 580 400
> > M: + 44 7810 526 317
> > F: + 44 1908 580 411
> > E: [log in to unmask]
> > W: www.indium.com
> > Leadfree: www.Pb-Free.com
> >
> >
> >
> > -----Original Message-----
> > From: TechNet [mailto:[log in to unmask]]On Behalf Of Morse, Carrie
> > Sent: Thursday, February 27, 2003 3:57 PM
> > To: [log in to unmask]
> > Subject: Re: [TN] : Shining smooth solder joint on ENIG or Gold
> > plating
> > Board.
> >
> >
> > Poh,
> > Although shiny joints are not an IPC/J-STD requirement, you can
> > minimize
> > dullness by using nitrogen in your oven, or, by changing solder
> > pastes.
> > Some pastes provide for shinier joints than others. But again,
> > shininess is
> > not a requirement.
> >
> > -Carrie
> >
> > -----Original Message-----
> > From: Poh Kong Hui [mailto:[log in to unmask]]
> > Sent: Thursday, February 27, 2003 7:18 AM
> > To: [log in to unmask]
> > Subject: [TN] : Shining smooth solder joint on ENIG or Gold plating
> > Board.
> > Importance: High
> >
> >
> > Hi Technetters,
> >
> > Can someone advise me how to get a good smooth shining solder joint
> > on the
> > ENIG board or board with gold plate SMT pads.
> >
> > As I can understand that board subjected to reflow soldering, the
> > solder
> > joint tends to look dull and not so smooth joint. But, is there any
> > way to
> > get a good shining joint.
> >
> > Thanks.
> >
> > Poh
> >
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