[TheForge] -Hay rake tines

[Ron Childers]

Dave, I think the old round tines on the horse drawn hay rakes are 1095 and
the newer flat ones as used on a 3 point hitch are w1. You are correct about
not over heating 1095. I have good results using oil as a quench.... Ron C

-----Original Message-----
From: theforge-bounces at mailman.qth.net
[mailto:theforge-bounces at mailman.qth.net] On Behalf Of David E. Smucker
Sent: Wednesday, March 25, 2009 10:17 PM
To: TheForge
Subject: [TheForge] -Hay rake tines

Lee,  In most cases hay rake tines are 1095 or W1.

My procedure for using this steel for tools is to forge to my desired shape.

Then normalize them.  To normalize we heat the tool steel to just above 
critical temperature.   In this case just to the point that the steel 
becomes non-magnetic, and then let them air cool.

Depending on their cross section they may be quite hard at this point. 
(Knife makers by the way often do this normalization 3 times to give very 
fine grain structure, but I think for most items once is enough. 
Normalization gives a big improvement in grain size -- too much 
normalization and you loose depth of hardness.)

Then heat treat the item.  Slow heat to critical - just becomes 
non-magnetic -- don't over heat and then quench.  For this steel I like 
brine.

Then oven temper.  For most tools with edges I use 325 to 400 F depending on

the trade off between hardness and toughness.  For strikers I have even 
suggest 212 F (boiling water) for a temper.  I use this 1095, W1  to make 
woodworking tools, such as chisels or carving tools.

Hope this helps some.

By the way, hay rake tines are a very good source of low cost W1, 1095 
steel.

Dave

--------------------------------------------------
From: "lee robbins" <naturadoc1 at yahoo.com>
Sent: Wednesday, March 25, 2009 5:46 PM
To: <theforge at mailman.qth.net>
Subject: Re: [TheForge] TheForge Digest, Vol 62, Issue 55-Hay rake tines

>
>>>I know we covered this before, but what was the
>>>consensus of opinion , to temper or use as quenched?
>>>From hay rake tines to files, seems they would be too
>>>brittle and hard to shave sparks in "as quenched". I
>>>expect it will be a "resultant" issue , as in, do two
>>>and see which showers best.
>>>
>>>
>>> dan tull
>>> Georgia
>
> I got some hay rake tines to use for spring weeders. would they best be 
> normalized in the oven after quench when formed or better be bent and 
> formed cold?. how do you retain toughness with maximum springiness?
>
> thanks for all the interesting perspectives on sparks
> Lee
>
>
>
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