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January 2009

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Subject:
From:
Brian Ellis <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Brian Ellis <[log in to unmask]>
Date:
Wed, 28 Jan 2009 16:35:15 +0200
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Werner

And when the Brussels greens (sprouts?) decide to restrict 
perfluorocarbons? I think this may happen sooner or later. It would be 
almost impossible to devise a VPS machine with zero emissions and a 
practicable throughput. Depending on the components used, it can take 
days for an assembly to lower its emissions to undetectable levels after 
soldering.

Brian

Werner engelmaier wrote:
>  Hi Brian,
> I fully agree with you--on both counts.
> Unfortunately, you need to lay the blame for the need for VPS squarely at the feet at the misguided 'greens' in Brussel.
> 
> Werner
> 
> 
>  
> 
> 
>  
> 
> -----Original Message-----
> From: Brian Ellis <[log in to unmask]>
> To: TechNet E-Mail Forum <[log in to unmask]>; Werner engelmaier <[log in to unmask]>
> Sent: Wed, 28 Jan 2009 5:56 am
> Subject: Re: [TN] Vapor Phase Soldering
> 
> 
> 
> 
> 
> 
> 
> 
> 
> Yes, some do, at least as far as the practical aspects of soldering are 
> concerned. However, very few even  cast a thought to the environmental 
> aspects, which are horrendous. The radiative forcing due to halocarbons, 
> mostly fluorinated) has increased from near-zero to an average of 0.34 
> W/m² in the last 50 years; this is about 21% of the total net 
> anthropogenic climate change effect (IPCC 2007 Fig SPM2). The 
> perfluorinated compounds used in VPS are the most pernicious of these 
> because their long atmospheric residence time (>10,000 years) make them 
> continue to have their effect over many tens of generations to come. 
> Â 
> 
> As an engineer, VPS is the best thing since sliced bread. As an 
> environmentalist, it is the worst thing since Noah was told to build his 
> ark. 
> Â 
> 
> Brian 
> Â 
> 
> Werner engelmaier wrote:Â 
> 
>>  
>>
>>
>>  
>>
>> Hi, 
>> Does any one know of an assembly house that has vapor phase capability and knows what they are doing? 
> 
>> Werner 
> 
>>
>>
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