[Boatanchors] Funny Blue Glow

[J. Forster]

> John,
>
> I hadn't heard of it until the issue came up!
>
> It drove the Health Physicists bonkers!

There has to be something else going on. Perhaps the filom was in a thin
foil envelope and that was heated by the RF field.

> I've seen ONE person using TIG in a shirt!  He sure regretted it!
>
> Looked like he had spent the weekend at the beach!  He learned his lesson.

Well, now you know of 2. I got a 'sunburn'...  aka UV burn.

> Anyone not familiar with SMAW welding, it is the flux coated "stick"
> welding.
>
> Didn't mean to confuse anyone!

A metal arc is a metal arc. They all emit lots of UV.

> Try using an Oxyacetylene welding rig when they have no filler rods!
> Twice I had to scrounge up a coat hanger to use.  It actually did a
> pretty good job.  I was surprised!
>
> I've been around the huge factory welding machines that distribute
> powdered flux in front of the welding head.

Submerged arc welding.

-John

===================

> The most interesting method of welding that I have had the experience to
> have used, is the Plasma Arc.  I got to give it a go while at Hobart for
> my welding inspection course.  I got to weld two cigarette foil wrappers
> together!  That was interesting.
>
> Now they use the Plasma arc for cutting and about anything else.  I did
> mine in the late '70s.  It was pretty new then.  I hadn't seen one
> outside Hobart back then.
>
> Bob - N0DGN
>
> Bob - N0DGN
>
>
> On 4/21/2014 2:46 PM, J. Forster wrote:
>> I've never heard of RF fogging film.
>>
>> We agree that the voltages in MIG & TIG are too low to give off x-rays.
>>
>> There is no question that metal arcs give off a lot of UV. When learning
>> to TIG weld, I made the mistake of wearing a short-sleave shirt.
>>
>> An iron arc was used as a UV source in many labratories through the
>> 1960s.
>> In fact, companies, like Spindler & Hoyer made arc units for this
>> purpose,
>> very similat to the units used in theater 35 mm movie projectors.
>>
>> -John
>>
>> ==================
>>
>
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