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Galvanised steel

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sean logie27/02/2018 10:34:08
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Saved a quantity of 20mm galvanised steel bar from the skip at work ,it was off an old handrail so me being me took it home . Any ideas how the galvanizing will machine in the lathe. I know I should just go and try it but I'm bored at work today so I thought I'd ask 😉.

Sean
Hopper27/02/2018 10:44:24
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It's just zinc so machines right off without dramas.

If you want to weld it, grind the zinc off first. The fumes are toxic when welding zinc plated stuff.

sean logie27/02/2018 11:19:40
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Yeh it's not nice to weld even after grinding .

Sean
larry Phelan27/02/2018 11:56:21
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It machines alright,but is not always very round. As regards welding it, no it,s not nice !

Farmboy27/02/2018 12:19:11
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You soon find out if you are welding galvanised steel as you can taste the zinc fumes. I was told to drink a glass of milk when that happened (only the one time), as the calcium helps counteract the zinc absorption. Preferably don't do it!

Most of my welding was done outdoors so fumes would usually blow away.

sean logie27/02/2018 12:22:04
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I won't be using the material for welding projects ,it's just handy size to have.

Sean

Edited By sean logie on 27/02/2018 12:23:01

Farmboy27/02/2018 12:27:46
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Sorry. Meant to add, I have turned galvanised with no problem, but the swarf can be a little dusty if it is old and weathered.

Speedy Builder527/02/2018 13:29:16
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may be a poor quality steel as it didn't require much when in service as a handrail. You might find it hard to get a good surface finish.
BobH

vintagengineer01/03/2018 10:00:26
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To remove zinc, soak overnight in a saturated solution of malt vinegar and table salt. This will dissolve the zinc and works well on nuts and bolts!

Hopper01/03/2018 10:12:43
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Posted by vintagengineer on 01/03/2018 10:00:26:

To remove zinc, soak overnight in a saturated solution of malt vinegar and table salt. This will dissolve the zinc and works well on nuts and bolts!

Thanks for that tip. Could be handy for using hardware store bolts etc on old motorbikes without them standing out like dog's ears.

Ian S C01/03/2018 11:08:36
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The galvanised nuts with the zinc removed will be a very sloppy fit on a standard bolt.

Ian S C

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