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DMiller 
Orange Level Access
Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 29450
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 Topic: Four more
Posted: 10 Feb 2017 at 7:32am |
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The gent I bought my replacement loader cutting edge from wanted to dump the rest he had. Had intended to make a press frame from them then realized they were a bit too hard to drill.
He has sold me four additional edges, they are 8 feet long 10 inches wide a full 1 inch thick and beveled the last 1 1/2 inch.
PM me if interested.
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LeonR2013
Orange Level
Joined: 01 Jan 2013
Location: Fulton, Mo
Points: 3500
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Posted: 10 Feb 2017 at 7:20pm |
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A bit to hard? I think it would take a diamond bit to drill them. They're the hardest stuff I've ever tried to work with. I also wonder if it wouldn't be a good idea to preheat any area you are going to weld to keep it from surface cracking?
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Ray54
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Joined: 22 Nov 2009
Location: Paso Robles, Ca
Points: 4340
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Posted: 10 Feb 2017 at 8:05pm |
Leon got me started think of my neighbor that had to learn most things by experience. Was building a lite quick brush rake on his dozer to clean up his walnut orchard after pruning.
Had some 3/4 x 3 springs out of a junk TD18 dozer. Had a frame of pipe and started welding the spring steel on every so far. They were popping and cracking as he used a general purpose welding rod. He got done tacking the last one as the first fell on the dirt. They all feel off.
Would think the hardened steel would not be the best to us as a frame for much of anything.
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JohnCO
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Joined: 11 Sep 2009
Location: Niwot Colo
Points: 8992
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Posted: 11 Feb 2017 at 2:48am |
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Wonder if you could heat it enough to soften the steel?
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"If at first you don't succeed, get a bigger hammer"
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Dozer
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Joined: 16 Aug 2011
Location: SW New York
Points: 689
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Posted: 11 Feb 2017 at 5:03pm |
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Do you know what kind of steel it is? AR400 and AR500 series are supposed to be drilled with HSS at low speed with coolant I think a bolt on replaceable cutting edge would be preferred.
I wonder if drilling is impossible or just difficult. Did you try carbide?
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LeonR2013
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Joined: 01 Jan 2013
Location: Fulton, Mo
Points: 3500
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Posted: 11 Feb 2017 at 8:09pm |
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The blades I was working with were off of motor grader. They may have been harder than what you're talking about. I know when they broke they just went "tink" and that was it. I have had good success preheating hard material and welding it. Not red hot now. John some metals will soften when heated red hot, but there are others that will air harden and I don't remember the alloy that makes it do it.
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 29450
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Posted: 12 Feb 2017 at 3:18pm |
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Being cutting edge will probably be high chromium content so will not so much anneal. Are harder than the hubs of He-- and about as heavy! I have not put a drill to them but have seen these drilled as noted low speed in a drill press or mill with LOTS of coolant applied.
Still I have bought them, pick them up on Tuesday morning and will have them as he did sitting collecting dust for awhile.
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 29450
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Posted: 15 Feb 2017 at 4:09pm |
As received. MODOT sale was where they came from, for Case Wheeled loaders they had ceased to have.  
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CAL(KS)
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Joined: 18 Sep 2009
Location: Chapman, KS
Points: 3732
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Posted: 15 Feb 2017 at 4:19pm |
dont know about drilling, but when i re did the cutting edges on my dozer i used pieces cut from a cat loader cutting edge. i preheated with a torch, not cherry just hot, and welded with 7018 rods. these were on the end of the blade and have taken full force of the dozer and still holding.
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Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20
Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15
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shameless (ne)
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Joined: 08 Jul 2016
Location: nebraska
Points: 7463
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Posted: 15 Feb 2017 at 5:29pm |
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bet MEL could use them
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AC Mel
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Joined: 23 Jan 2010
Location: N.Ca.
Points: 1099
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Posted: 15 Feb 2017 at 9:49pm |
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Yep, Mel could use them(don't know what for yet) Nice score Dave.
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 29450
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Posted: 17 Feb 2017 at 7:46am |
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Thanks Mel, Am putting the first one to good use on my bucket rebuild.
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