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Thread: Building up worn axe heads
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7th Jun 2022, 08:30 PM #1Senior Member
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Building up worn axe heads
Hi guys.. Is it possible to weld a piece of harder steel to replace the worn down/ground away section of an axe.. something like a piece of leaf spring or large file ?
Ken.
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7th Jun 2022, 10:18 PM #2Philomath in training
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Isn't that what hard-facing electrodes are used for?
(Building up worn steel surfaces)
Michael
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8th Jun 2022, 10:26 AM #3
Hi Micheal,
The typical application for HARDfacing is on the cutting edges and cheeks of a ground engaging tool- read bulldozer blade In reality the hardfacing forms a thin skin on the blade surfaces.
If any deep wear has occurred it is brought up to level with low hydrogen based electrodes- ie basically maganese steel. Hardfacing performs best when it is relatively thin in cross section. Stay away from welding hardfacing if you can, it is toxic poisonous stuff.
Kenny_10
If I were to repair an axe using electrode welding I would be using the LHyd. electrodes to weld the spring steel.
If you choose leaf springs make sure they are pretty old ones as the steel in the last 30 years is not really suitable.
The blacksmiths in our group will be able to tell you why.
The completed welded axe will require heat treating and tempering to give an edge that will perform.
Grahame
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8th Jun 2022, 05:03 PM #4China
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- Dec 2005
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- South Australia
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"Stay away from welding hardfacing if you can, it is toxic poisonous stuff"
Is it the flux that is the problem, would bare rods as used in oxy/acet be ok
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8th Jun 2022, 07:18 PM #5
G'day China
Both flux vapours and metallic vapours.
It is mainly the metals that make up that particular hardfacing alloy. There is not just one hardfacing alloy ,there are a few.
They contain nasty metals like chromium, nickel, manganese, boron and tungsten.
It is the metallic vapors present in your breathing zone by virtue of the molten arc that can do the damage. Breathing in these vapours to the pulmonary system is the major vector of entry to the body.
I will quote from the Hazards of Welding a 90's publication from the Australian Metal Workers Union researched by Ken Bartlett.
Here's the breakdown of the effects :
Boron Irritant to eyes,skin and respiratory tract.
Chromium Irritant to lower respiratory tract, irritant to eyes, nose throat and lungs. Mutations . cancer of nose, larynx and lungs.
Maganese Chronic damage to brain/nervous system, irritant to eyes nose ,throat and lung
Nickel Skin and respiratory allergies.Mutations,cancer of the lung.
Vanadium Irritant to skin, eyes, nose and throat. Green tongue, bronchitis chemical pneumonia,. Pulmonary odema.
There is still more on fluxes but I am have to go out so I''ll come back to it latter.
Grahame
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8th Jun 2022, 07:41 PM #6Intermediate Member
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- Feb 2018
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Originally Posted by Grahame Collins;[URL="tel:1998707"
Cheers Andrew
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