[AT] Re: TIG welding--a little OT

[John Wilkens]

Just read on the Lincoln site that the intensity of radiation from welding 
most aluminum alloys can be 4 times stronger than welding mild steel due to 
the type of gasses given off that create the stronger 
radiation.   Something like that.    John



At 01:02 PM 03/17/2006, you wrote:

>>   18. Re:  TIG welding--a little OT (charlie hill)
>>Message: 18
>>Date: Fri, 17 Mar 2006 09:42:57 -0500
>>From: "charlie hill" <chill8 at cox.net>
>>Subject: Re: [AT] TIG welding--a little OT
>>To: "Antique tractor email discussion group"
>>         <at at lists.antique-tractor.com>
>>Message-ID: <000901c649d1$15899b10$d4f1ac46 at toshiba>
>>Content-Type: text/plain; format=flowed; charset="iso-8859-1";
>>         reply-type=original
>>
>>Bob,
>>
>>My guess is that it is a combination of the high frequency and the intensity
>>of the flame.  Seems to me that the TIG flame is hotter and brighter than
>>arc welding.  Have you ever TIG'd aluminum?  A friend of mine does a lot of
>>that.  The walls in his shop are unpainted pre-cast concrete .  You can
>>stand in his shop while he's TIGing aluminum with your back to him and the
>>reflection off the walls is enough to make you feel like your eyes are
>>getting burned.
>Your eyes probably were getting burned.  Reflected arc light is quite 
>dangerous and you need the proper protective gear.  I will guess that one 
>of the reasons that you noticed more sunburn from TIG is the duration of 
>the arc.  TIG is rather slow compared to other methods therefore the arc 
>must be sustained longer than it would be for other methods.  You are 
>simply exposed to more arc time.
>
>
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