guide bar welding
- Thread starter b_roz
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camel2019
ArboristSite Guru
im pretty sure guide bars are hardened to some extent so any weld repair may just crack and break
Art Martin welded several bars for me and none cracked or broke and they were as hard or harder that the original rails. He said the secret was buying what he pronounced as Stouty Rod. I don't know if this helps but others may chime in. Mike
Hard tip bars have a stellite or similar composition on the tip/rail edges and can be tig welded with the appropriate filler rod.
You'll be grinding it, not very file friendly stuff...
You'll be grinding it, not very file friendly stuff...
Huskybill
Addicted to ArboristSite
I wonder if it can be ground down on the bar shop machine and regrooved. It’s been done before. I set up a bar shop machine for my dealer. My buddy’s bar shop has the hammer attachment that closes up the worn groove in the bar too. It’s a cold swage hammer.
If there's enough of the hard face left then sure but often when a chunk comes out it breaks down to the base metal.
Stoody rod is one of the originators of hard facing, used to apply it with a carburizing oxy acetylene flame a thin slice of carbon ground to fit in the groove will minimize clearing the groove after the hard face is applied there are a lot of innovative products out there in the last 50 years But Stoody rod is a good product for your application. Just be sure to research so you don't mess up the bar, Electric arc will leave a shrink spot at the end of the weld making for a heat crack or brittle area and problems too. Heat sticks (Temp sensitive melting sticks help beginners and experts) are nice but some of us river rats use a bit of spit and know the preheat by how the spittle dances on the steel. Hot "HOT" ash helps for slow cooling just like if you were working Cast Iron
Nothing ventured nothing gained as it is lost if you don't try.
Nothing ventured nothing gained as it is lost if you don't try.
Huskybill
Addicted to ArboristSite
Do you put the hot bar after welding in sand so it cools slow like castiron welding.
I been a welder fabricator for 35 years. They do offer temp sticks to check the temps. But the first pass with the flame will burn off the bar oils then we get a good clean weld.
I been a welder fabricator for 35 years. They do offer temp sticks to check the temps. But the first pass with the flame will burn off the bar oils then we get a good clean weld.
Forgot the clean up I also tend to use a stainless steel brush after a first pass and another after brushing, sometimes I forget what I just did and do it again, all in the process of preheating any way.. I would prefer to moderately preheat the complete bar for the thermal mass cooling slower and give it less shock on the way to the ash can. I have started a small fire even in the summer for the coals and to heat my ashes,, Guess I was raised with what I was used to using. Concrete Plant was 2 blocks away just never thought about sand
. In reality preheated sand would be as good or better than ASHes Unless it was a really big piece then the coals under the ash would be beneficial in slower cooling and ash won't let a draft through as easy Bought my first welder new in 78 or 79 one of them AC/DC 295 amp Century buzz boxes I still have it in an old semi trailer out back. Earned a living welding and repair for many years But that was off and on due to so many distractions of Life Used to be good at it but eye sight does change things.Hope some Been there and dunnits chirp in. Could make for a good thread (for me to learn from)
For the record I have never welded a saw bar but have done many Head Saw Blade repairs. Started out using 680 Eutectic rod and then 308 Airco But that is a whole new level ...
Huskybill
Addicted to ArboristSite
I picked up a Hobart gas engine driven welder about 8 years ago from the orginal owner. She’s a 100% duty cycle @200 amps plus a 4K generator. A contractor had it to repair his buckets. Then the dam prostate cancer hit me. Distractions of life I know the feeling. I got the welder running.
At work I was a lead tech for a engineering group. I would take on any type of different welding jobs to learn it. I got into all types of TIG welding. Magnesium was my favorite( dirtbike cases)
At work I was a lead tech for a engineering group. I would take on any type of different welding jobs to learn it. I got into all types of TIG welding. Magnesium was my favorite( dirtbike cases)
That Is something I STILL dream of. I get by with a Miller Trailblazer earlier Gas version Cheaper on fuel but some times it doesn't push hard enough.
Hope you keep those kind of LIFES DISTRACTIONs at Bay and to a minimum.
I got a new Trailblazer 302 (100% duty cycle) about 10 years ago. It has never let me down.... not in any single way. Thing just keeps going. It has the kohler engine. Does AC/DC-TIG,MIG,and Stick.
Best 4,000 ever spent
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Done a few with 308E-16
Scarr52 can TIG them with Stellite, absolutely must be ground as no normal machine tools will touch it.
Mark
Mark
