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So Long Tubulars?



 
 
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  #131  
Old July 16th 19, 10:43 PM posted to rec.bicycles.tech
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Default So Long Tubulars?

On Tuesday, July 16, 2019 at 3:54:46 PM UTC+2, Tom Kunich wrote:
On Tuesday, July 16, 2019 at 5:14:55 AM UTC-7, wrote:
On Tuesday, July 16, 2019 at 1:19:36 AM UTC+2, John B. wrote:

As for Trump, he certainly isn't an idiot as his use of the media
during the campaign was masterful.


This only 'works' if the recipient end 'cooperates'.

Lou


Does it make you feel bad that Hillary lost by 2/3rds of the electoral college?


Don't care about Hillary, but I'm worried that someone with no social intelligence can be elected president of the USA; probably twice. Please don't reply.

Lou
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  #132  
Old July 16th 19, 11:45 PM posted to rec.bicycles.tech
jOHN b.
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Default So Long Tubulars?

On Tue, 16 Jul 2019 08:10:14 -0400, Duane
wrote:

On 15/07/2019 6:40 p.m., John B. wrote:
On Mon, 15 Jul 2019 09:04:22 -0400, Duane
wrote:

On 15/07/2019 8:57 a.m., AMuzi wrote:


MUCH SNIPPED

They go from the sharpening service directly to the vapor deposition
house. It's titanium nitride of few microns or so about $30 per piece.
Beyond that for a higher fee you can buy other even harder coatings now.

typical example:
http://www.praxairsurfacetechnologie...por-deposition



It's more case hardening than plating. Google "Nitriding White Layer"


I'm not sure as the original use of the term "case hardening"
described the hardening of the outer surface of an object by adding
carbon to the parent material, specifically iron or steel, while what
Andrew described seems to be the adding of a layer on the surface of
the parent material, sort of like galvanizing or even painting.
--
cheers,

John B.


The question was about Nitriding. Not carburizing. As for "adding the
layer" it's not adding a layer exactly. Gas Nitriding typically uses
ammonia (NH3) heated to the point where it dissociates forcing N2 into
the outer layer. Titanium presents some problems that require a thinner
layer so lower temperature and is often costly.


Note I was replying to the post that said
" It's more case hardening than plating. Google "Nitriding White
Layer"

Saying that case hardening was a process that added carbon to the iron
from which an item was made and literally converted the outer layer to
steel, i.e. an alloy of iron and carbon.

However after reading up on "nitrating" I see that they do describe it
as a "case hardening process" so I'll squirm sideways, like some do,
and change the subject :-)
--
cheers,

John B.

  #133  
Old July 16th 19, 11:56 PM posted to rec.bicycles.tech
jOHN b.
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Default So Long Tubulars?

On Tue, 16 Jul 2019 05:14:53 -0700 (PDT), wrote:

On Tuesday, July 16, 2019 at 1:19:36 AM UTC+2, John B. wrote:

As for Trump, he certainly isn't an idiot as his use of the media
during the campaign was masterful.


This only 'works' if the recipient end 'cooperates'.

Lou


But they did. Trump would say something outrageous and get several
minutes of TV coverage that evening. He did it over and over so I
assume that it must have been deliberate.

https://fortune.com/2016/12/09/hilla...aign-spending/
The final FEC report showed the extent of the Trump advertising
splurge. The campaign spent nearly $39 million on last-minute TV ads
and another $29 million on digital advertising and consulting work
done by Parscale's firm.

Clinton's campaign placed a far greater emphasis than Trump on
television advertising, a more traditional way of reaching swaths of
voters. She spent $72 million on TV ads and about $16 million on
Internet ads in the final weeks.

As the old saying has it. "20 million dollars ain't hay" :-)
--
cheers,

John B.

 




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