[Fwd: [TheForge] Forging of Chrome plated steel]

Thu Mar 21 10:07:04 2002

new steel is very cheap. why go thru all the trouble for $1.00?

bob
_________

>Hold on Folks!
>         We answered the question, but not the problem.  Isn't there several
>ways to disassociate chrome plating from steel?  Acids or plating
>techniques?
>
>----- Original Message -----
>From: "Larry" <[email protected]>
>To: <[email protected]>
>Sent: Thursday, March 21, 2002 6:51 AM
>Subject: Re: [Fwd: [TheForge] Forging of Chrome plated steel]
>
>
>> Thanks for all the inputs.  Considering I was just looking a a huge pile
>of bumpers behind a friends body shop and as I was looking for some steel in
>about that thickness to work into guards, the pile looked intriguing.  None
>the less, I will reconsider and look at some more scrap yards for suitable
>stock.  Thanks again,
>>
>> Larry
>>
>> Mike Sweany wrote:
>>
>> >  When I was suffering from the effects of the weld fume fever or what
>ever you want to call it, and yes I had those syptoms. I was sent by my MD
>to a specialist that gave me a colonoscopy, cat scan,  etc. The results of
>all these tests were inconclusive. Yet I continued to worsen. Oh yes heavy
>metal test too, but chrome is not heavy metal. Yes ,blood work too. SO. How
>do you test for this?  I finally went to a lady that looks in your eye (I
>forget the name of the practise)  She put me on vitamins and supplements,
>told me to quit welding and probably saved my life.
>> >   Phlip <[email protected]> wrote: OK, guys, this is Randy's response.
>Randy is an MD in internal medicine in
>> > NYC, and is also a teacher at one of the Med Schools there. He knows his
>> > stuff ;-)
>> >
>> > Phlip
>> >
>> > Randy Goldberg MD wrote:
>> >
>> > > I don't have the resources to identify specific products of the
>forging
>> > > process. I can tell you that:
>> > >
>> > > Chromic oxide (CrO) is relatively insoluable and can be disregarded.
>> > > Chromium trioxide (CrO3), however, is very soluable, can easily be
>> > > absorbed through the lungs, and is very very very toxic. From
>> > > Ellenhorn's _Medical Toxicology_: "Ingestion of hexavalent compounds
>> > > (including chromium trioxide) usually leads to abdominal pains,
>> > > vomiting, diarrhea, and intestinal bleeding. Death may ensue during
>the
>> > > initial circulatory collapse. If the patient survives the initial
>phase,
>> > > some renal tubular damage may occur. Hepatic failure, severe
>> > > coagulopathy, or intravascular hemolysis have been observed." I would
>> > > expect both CrO and CrO3 to be liberated during the forging of metals
>> > > containing chromium.
>> > >
>> > > On zinc: Again from Ellenhorn: "Inhalation of zinc oxide is the most
>> > > common cause of metal fume fever. This syndrome resembles a flulike
>> > > illness. Onset occurs in 4 to 6 hours, generally on the evening after
>> > > exposure to fumes. Fatigue, chills, fever, myalgias, cough, dyspnea,
>> > > leukocytosis, thirst, metallic taste, and salivation characterize this
>> > > self-limited illness, with resolution of symptoms appearing in 36
>hours.
>> > > The chest x-ray usually is clear. Tolerance develops in workers, but
>may
>> > > be lost over the weekend (``Monday Morning Fever''). Metal fume fever
>> > > can also follow exposure to fumes of copper, magnesium, aluminum,
>> > > antimony, iron, manganese, and nickel in welding, galvanizing, or
>> > > smelting operations." Again, I would expect zinc oxide to be liberated
>> > > during the forging of zinc-containing metals.
>> > >
>> > > I would not recommend playing with either of these without (a) a
>> > > breathing mask, preferably one with an independant air supply and (b)
>an
>> > > EXCELLENT ventilation system.
>> > >
>> > > Cheers,
>> > > Randy
>> >
>> > _
>>
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