Erik,
Who cares about those points?implementing of lead-free policy makes everyone
happy:
1) marketing people can push their outdated product with green label "lead
free"
2) politicials have nice item to gain votes
3) plenty of grants for research,new jobes for environmental authorities to
hunt of lead criminals
4) a new growing market for soldering machines,soldering pastes
5) new oportunities for huge construction contractors to build dams
You are spoiling the party :((
Edward

Edward Szpruch
Eltek Ltd
P.O.Box 159 ; 49101 Petah Tikva Israel
Tel  ++972 3 9395050 , Fax  ++972 3 9309581
e-mail   [log in to unmask]

> -----Original Message-----
> From: Erik E. de Kluizenaar [SMTP:[log in to unmask]]
> Sent: ã ðåáîáø 21 2001 10:42
> To:   [log in to unmask]
> Subject:      Re: [LF] Eco-Economy Update 2001-2
> 
> 
> Dear all, 
> 
> In reaction to Joe Fjelstad's mailing on rising sea level and CO2
> emission, I would like to make the following contribution. 
> 
> Regarding CO2 emission in connection with lead-free soldering, we measured
> the energy consumption of wave and reflow equipment for typical tin-lead
> and lead-free conditions. It came out that the higher tempertures required
> for lead-free soldering only cause a rise of almost 5 % energy consumption
> per unit of time, for both wave and reflow soldering machines.
> But...................... 
> - Wave soldering requires a longer contact time with the waves. 
> - Reflow soldering requires a longer temperature-time profile in order to
> keep the temperature gradients and differences within components and
> boards that are being soldered within acceptable limits. 
> These required longer soldering times will cause machines to run slower.
> In many cases additional machines will have to be installed in order to
> keep the production rate at the same level. TYhis is the factor tha will
> cause a much larger energy consumption, which may amount to tens of
> percents (typically 30%). 
> 
> To get the complete picture, one should also compare the energy
> consumption in the mining of the various metals and in the metallurgy
> plants where the solder alloys are produced. These are still open
> questions to me. 
> 
> Best regards,
> Erik
> --------------------------------------------------------------------------
> -------------------------------------------------------------------
> Erik E. de Kluizenaar
> PHILIPS CFT - Electronic Packaging & Assembly (EP&A)
> Building SAQ-p,  p/o box 218,  5600 MD Eindhoven - The Netherlands
> Tel/Fax: (+31 40 27) 36679/36815;    E:mail  [log in to unmask]
> PHILIPS homepage:  http://www.philips.com; PHILIPS CFT homepage:
> http://www.cft.philips.com
> Internal PHILIPS only:
> http://pww.cft.philips.com/cfteurope/electronics/elpajo/index.htm
> --------------------------------------------------------------------------
> --------------------------------------------------------------------

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