Few general questions
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Few general questions theChas. 01-06-2007
Posted by theChas. on January 6, 2007, 10:21 pm
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Bedframe angle iron. It sure is different from stock angle iron.
Is there any special use for it like knives, or other cutting devices?
Anyone ever hear of making a thread die by drill the three holes in
nut with a flush bolt? Then heating the nut cherry red and sprinkling
powdered sugar on it to harden the threads. Years ago I came across this
but heaven knows where.
If one makes a hardy cut off, from a large spring, and then tempers
it, does welding it to the plate destroy the temper?
Would old rotary grass mower blades be good to rebuild the blade on
a 'sod cutter' machine? What would the re-tempering process involve, if
this is practical?
in advance. . . . thanks to all.



--
Posted via a free Usenet account from http://www.teranews.com


Posted by RAM³ on January 6, 2007, 11:07 pm
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> Bedframe angle iron. It sure is different from stock angle
> iron.
> Is there any special use for it like knives, or other cutting devices?

Structural use.

Fishing Rod holder: cut in half crossways, cut one end at 30-45 degree
angle, weld large fender washer perpendicular to the angle about a foot
from the other end, weld a ring (about the diameter of the washer)
perpendicular to the angle at the top (above the washer).

Stab the rod holder into the ground beside a fishing hole and use it to
hold up the rod while waiting for the fish to bite.

The "stuff" is like re-bar: mystery metal.

> Anyone ever hear of making a thread die by drill the three
> holes in
> nut with a flush bolt? Then heating the nut cherry red and sprinkling
> powdered sugar on it to harden the threads. Years ago I came across
> this but heaven knows where.

Might work for soft metals.

> If one makes a hardy cut off, from a large spring, and then
> tempers
> it, does welding it to the plate destroy the temper?

Tig it and it might not. [DCEP?]

> Would old rotary grass mower blades be good to rebuild the
> blade on
> a 'sod cutter' machine? What would the re-tempering process involve, if
> this is practical?

Use a good hardfacing rod...

> in advance. . . . thanks to all.
>
>
>





Posted by on January 8, 2007, 5:17 pm
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> > Bedframe angle iron. It sure is different from stock angle
> > iron.
> > Is there any special use for it like knives, or other cutting
> > devices?
> Structural use.
> Fishing Rod holder:...
> The "stuff" is like re-bar: mystery metal.

Spark testing quite few different bedframes... it seems to be about
1070 and I'd guess it was work hardened into the hardened state we
find it in.

http://www.panix.com/~alvinj/file12/yoketool.jpg

The longer piece is a hunk I've been using for over 25 years to
hold stuff like VW flywheels to tighten and loosen the "gland nut"
(~250ft/ls). All it ever needed was holes drilled into it at the
right places. The yoke-tool is its latest use just before that it
was used to hold the harmonic balancer on my clunky old Ford FE
(FordEdsel;) engine in my pickup ('75 F150), just needed another
hole for that-use was all. ;)

The yoke-tool needed two new holes and that other short piece and
some old manifold bolts. ~175 ft/lbs was nothing for that tool.

A larger and longer piece of bedframe was bolted to VW rear brake
drums for loosening and tightening the 1+7/16" or 1+13/16" rear axle
nuts.

Think of "bedframe" as prepped-wrench-steel in an angle-iron shape. :)

> > Anyone ever hear of making a thread die by drill the three holes
> > in nut with a flush bolt? Then heating the nut cherry red and
> > sprinkling powdered sugar on it to harden the threads. Years
> > ago I came across this but heaven knows where.

No, not ever spelled out that way before. :)
I'll prob'ly use that someday, thanks! :)

Made thread chasers from castle nuts and "dremeled" (new verb;)
bolts and "dremeled" nuts using a 1/8" burr too.

Just a few days ago (no kidding) had to clean some spark plug
threads out, using a spark plug I dremeled in some tap-like-cuts
into years ago for that use.

> Might work for soft metals.

Start with a grade 5 or grade 8 nut that spark tests to be 1040 or
4140 or some other medium carbon steel harden it up by quench and
tempering (temper in boiling water) with a hard carbon case would
prob'y work pretty good?

BTW, since when do you thread hard metals? ;)

> > If one makes a hardy cut off, from a large spring, and then
> > tempers it, does welding it to the plate destroy the temper?
> > ...
> > What would the re-tempering process involve, if
> > this is practical?

Do yourself a big-ass favor...
"Metallurgy Theory and Practice" by Dell K. Allen
www.amazon.com
...usually the cost is about the same as shipping.

Reading that sucker over careful-like in about 2 weeks then
refering-back to it often over a couple more weeks while getting
the concepts straight in my head...

...figured I learned -at least- a thousand man-years of steel
metallurgy.

Meantioned that "idea" on the metallurgy NG and the the metallurgist
on there claimed I "learned more like ten-thousand man-years of
steel metallurgy" in a month.

Take your pick. ;)

Sounds pretty dangged good and hard to pass up either way huh? :)

http://www.panix.com/~alvinj/graphFig6-7.jpg
http://www.panix.com/~alvinj/graph1095.jpg

Why work with steel and not know the fundamentals when they are so
cheap and easy to get? :)

Just a couple hundred years ago all that stuff was "secret".

I've "sold" several copies of that book over the years, bought
several that I gave away too, and there's a couple of guys that own
'em lurk here too.

If you feel the need to get what your reading "straight" you can
post it here and even mention the page or figure number.

You are fixin to be amazed and thrilled at what you are going to
learn! Guaranteed. I'll buy the book from you if you aren't
pleased with it.

Is that one of the weirdest things you ever read on an NG? ;)

Alvin in AZ

Posted by Andrew Mawson on January 9, 2007, 6:30 am
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> > > Bedframe angle iron. It sure is different from stock angle
> > > iron.
> > > Is there any special use for it like knives, or other cutting
> > > devices?
> > Structural use.
> > Fishing Rod holder:...
> > The "stuff" is like re-bar: mystery metal.
>
> Spark testing quite few different bedframes... it seems to be about
> 1070 and I'd guess it was work hardened into the hardened state we
> find it in.
>>SNIP<<
> Alvin in AZ

Bedframes here in the UK mostly have a high manganese content, as many
were re-rolled from tram rails. Tram rails needed the managnese to
allow the upper wear face of the rail work harden as the wheels rolled
on it. Makes then a b***r to drill as they tend (guess what!) to work
hsrden and grip the drill. Welds tend to be brittle.

AWEM



Posted by on January 9, 2007, 4:18 pm
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> > Spark testing quite few different bedframes... it seems to be about
> > 1070 and I'd guess it was work hardened into the hardened state we
> > find it in.
> Bedframes here in the UK mostly have a high manganese content, as many
> were re-rolled from tram rails. Tram rails needed the managnese to
> allow the upper wear face of the rail work harden as the wheels rolled
> on it. Makes then a b***r to drill as they tend (guess what!) to work
> hsrden and grip the drill. Welds tend to be brittle.
> AWEM

Does that high Mn steel spark test like O1 with the "hollow puff
ball" look? (like a little dandelion flower)

I've read in several places like this (hear say) where they used
a high manganese steel for rails but never read it where I could
really count on it. :/ Here in the western US we used a high
manganese steel frog but not Hi-Mn steel for general rail use.

I've read where high manganese rail would wear the wheels out and so
there was no real advantage to high Mn rail, and using the ~1080
rail gave the best economy overall.

Maybe traffic speed is a determining factor in the choice?

I'd really appreciate it if you'd post a source for me to read,
that speaks to this in more detail. :)

As far as rail goes I-am only aware of three steel types... ~1080,
Hi-Si and Cro-Mo which we used for certain high speed and high
wear curves where surface "shelling" and rail breaking were
problems.

The manganese frogs were next to imposible to drill a 3/8" bond wire
hole into. I came up with using the thermite powder type bonds
(Cadweld) on my Mn-frogs and showed how great it worked and later it
came back through the "system" that I was to use the thermite powder
system for my Mn-frogs from now on. :)

Same story when I went through and started checking for grounds
every month. Showed how not just after thunderstorms do those
suckers show up and later was "schooled, one on one" on the need to
check for grounds every month and to make sure and write "NG" on the
battery card if none were found etc. I tried to show the old middle
(not big;) shot I was friggin doing that for better than 6 months
already and what I said and pointed to on my battery card... went
right past him as he kept on with his prepared speach. LOL :)

Alvin in AZ (retired signalape)

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