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Thread: Line Boring Video
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15th Aug 2020, 12:29 AM #1Most Valued Member
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Line Boring Video
Happened to come across this 22 minute video on YouTube, on line boring and repairing a bore for an excavator pin. I found it quite interesting to watch how the bore is built up by automatic MIG welding, subsequent line boring and pulling the bushes into place.
https://www.youtube.com/watch?v=qGs7nPvW_dI
Hope you enjoy it.
KrynTo grow old is mandatory, growing up is optional.
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15th Aug 2020, 09:08 AM #2
Interesting process indeed. I have never done line boring myself, but had a bit of a sticky-beek at a shop where a bloke was running the rig and getting it done.
Notwithstanding the setup which is considerable, there is a bit involved from the welding side as it is effectively a vertical up, overhead, vertical down, and in position weld in the one process. So having to get the welding power source (usually engine drive and a suitcase wire feed) dialed in to cater to all positions is a bit of a task.
I got to look at the welding process for a line boring job on a piece of big mining gear, the manufacturer suggested a butter layer of 7016, followed by a layer of a machinable hard surfacing alloy. Can't remember the wire though... probably needed though- the bucket on that excavator would scoop up a landcruiser with room to spare.
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15th Aug 2020, 10:48 AM #3Diamond Member
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- Mar 2014
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Line boring sucks. Was glad when i could palm it off to one of the other guys at work.
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