welding D-2 tool steel to 1018 crs
dave m
tool steel 54-56 rockwell to 1018 cold rolled steel. Any information
will be appreciated, process, preheat / postheat temps., filler
material or publications with detailed information.
Thanks Dave
Ernie Leimkuhler
davidri...@aol.com (dave m) wrote:
Silver solder would be the safest.
If it were me I would likely just TIG weld it with Hastelloy W, but then again I
use Hastelloy W for just about everything.
Hastelloy W is a Nickle based filler metal designed for joining of most iron, or
nickle based metals.
Very versatile.
Inconnel 625 and Haynes 556 are my other favorites.
--
--
The difference between genius and stupidity is that genius has it's limits....
(Albert Einstein)
Ted Edwards
> I am looking for a proven method to weld a piece of heat treated D-2
> tool steel 54-56 rockwell to 1018 cold rolled steel.
Haven't done D-2 but I have welded H-13 and High Speed Steel to mild
steel with both TIG and O/A using 312 Stainless filler.
Ted
brad
treat properties on the D-2.
Any welding, silver soldering / brazing over 800 degrees process will
greatly reduce the heat treat in the D-2, and therefore it's properties.It
will not be 54-56 Rc after joining with any of the aforementioned processes.
If heat treated properties are required, a filler metal very close to the
D-2 would be required, so the weld would respond corrospondingly to original
heat treat properties.
If re heat treat is not possible, a strong dissimilar metal filler would
work well. My first choice would be 312 stainless, although the Hastelloy,
any Hastelloy mentioned by Ernie would work as well. The 312 will be
somewhat more crack resistant.
The weldment must be preheated above tempering temperature, which is often
not known. A preheat in the 600-800 degree range would be a good choice.
Most tempering is done at a slightly lower temp.
Whatever preheat temp you choose, keep your interpass temp +/- 100 degrees.
Use only straight stringer beads and keep the melting of the two dissimilar
metals to a minimum, reducing weld/base metal dilution. Do not "burn in" the
weld. Overlap on the previous bead if you can.
After welding, heat so whole weldment is soaked with heat and stabilized at
the preheat temp. Then bury in dry sand, wrap in welding blanket,
fiberglass, etc. to slow cool. Leave it alone to the next day. Do not
disturb until less than 200 degrees. We are looking for a cooling rate of 50
degrees/hour or less.
If reheat treat is desired-anneal and reheat treat. If not-use part as is.
This is a lot of procedure, granted. Welding a tool steel to low carbon can
often be a challenge. Too much procedure or too little procedure?
Every weldment is different and you won't know if you have used enough
procedure until it is too late.
Good Luck-brad
dave m <davidri...@aol.com> wrote in message
news:5369516f.02071...@posting.google.com...
Jeffry Johnston
: The big thing to keep in mind is whether or not you want to keep the
: heat treat properties on the D-2.
Sure enough. :)
Are you making a knife from a planer blade?
: Any welding, silver soldering / brazing over 800 degrees process will
: greatly reduce the heat treat in the D-2, and therefore it's properties.
: It will not be 54-56 Rc after joining with any of the aforementioned
: processes.
<snipped the welding advise)
: Good Luck-brad
Weird, a tool steel question... :)
Funny thing about D2 is how variable it can be heat treated and how
strange it can respond to the tempering draw. 54-56hrc doesn't tell you
much about it's history. Was it oil quenched or air quenched? Was it
quenched from 1750F or 2050F? Was it drawn from 300F or 1200F?
Anyway, D2 if air or oil quenched from it's higher range 1950F to 2050F
displays a secondary hardness hump when drawn at 1000F which would bring
it back up above 60hrc.
What I'm saying is you're prob'ly right "It will not be 54-56 Rc" anymore
but it could be harder in certain places! :)
Alvin in AZ