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Thread: Hardfacing lawnmower blades
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25th February 2009, 05:30 PM #1Pink 10EE owner
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Hardfacing lawnmower blades
Our ride on mower is very hard on blades...It uses two long blade types and to replace them costs $100, they are not appreciably hard on the cutting edge, and in fact they wear out faster behind the edge then the edge itself this is from dirt and sand being sucked up and wearing the angled bit out.. I have hardfaced them before but I only have 3.2 and 4mm sized hardfacing rods at my disposal...These are not very satisfactory to use..
So really what I want to know is are there anything like 1.6mm hardfacing rods around???? Maybe Stellite rods might be the go if available??? Even if they are expensive if they cost under $100 and double the life of the blades then I am already ahead...
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25th February 2009 05:30 PM # ADSGoogle Adsense Advertisement
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25th February 2009, 07:38 PM #2
Be very aware of blade balance, vibration, and the possibility of metal fatigue around the mounting bolts. Having shed a blade of a Victa push mower, I would not like to see one fly off a ride on.
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25th February 2009, 10:27 PM #3Novice
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Hey .RC.
I always use oxy/acetylene to Stellite mower blades. One big advantage using oxy is that the heat is generalised over a large area rather than localised using electrodes. This means that the Stellite is far less likely to peel and the parent blade material is far less likely to crack being of a higher carbon steel,
I grind the blades until there is an even bevel along the blade and only stellite on the prepared area and not on the back of the blade. This allows the blade to be self sharpening.
Allow the blades to cool as slow as possible and then balance the blades by positioning on an edge and grinding the back edge until they balance.
Good luck and regards,
Ted.
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25th February 2009, 10:40 PM #4Pink 10EE owner
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Ted, where do you get your stellite rods from???
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26th February 2009, 08:31 PM #5Novice
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Hey .RC.,
Try Robotec in Victoria. I have had my Stellite rods for so long I can't remember where I got them. I think they originally came from EMF who then became CIG and who are now BOC. There are other sites on the internet so you shouldn't have too much trouble....try a few sites for the best price.
Regards, Ted.
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27th February 2009, 10:56 PM #6SENIOR MEMBER
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I use CIG tool steel eletrodes to repair anvils and chipped blades in a 9" wood chipper. They take much more than mower blades and I have no prolems. I tried a harder electrode but they cracked on cooling preheating may fix this but I just use the same electrodes as they are less trouble.
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