Cita
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| posted on 30/7/04 at 09:03 PM |
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Shield glass
Can anybody give some advize on which glass to use for my welding mask.
I use an old 120 amp stickwelder and i have problems with the darkness of the shield glass.
Only when i feed to much power the light from the welding rod is bright enough to see what i'm doing.
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Mark Allanson
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| posted on 30/7/04 at 09:07 PM |
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You need an EW9 lens, with a sheet of Evtech on both sides of the lens. Evtech is spatterproof, shatterproof - tha last thing you want is shards of
green glass in your eyes when you blindly headbut a bit of your chassis after running a great pass.
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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Cita
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| posted on 30/7/04 at 09:16 PM |
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Is that a European standard Mark?
I have a clear glass in front of the green glas but it certainly is'nt spatter proof!
One other question Mark,when i weld two RHS sections together when flat on the table,the weld is reasonable.When it comes to welding the corners the
problems begin.I manage to get,in one stroke, a small layer on one box section and a small layer on the other section with inbetween a nice canyon.
Is there some technicque to overcome this?
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Skirrow
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| posted on 2/8/04 at 02:16 AM |
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Does anyone use one of the cheap, auto darkening helmets? The sort of thing you see for 60 quid on eBay.
Are they any good?
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spunky
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| posted on 2/8/04 at 04:05 PM |
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quote:
Originally posted by Skirrow
Does anyone use one of the cheap, auto darkening helmets? The sort of thing you see for 60 quid on eBay.
Are they any good?
I use a not so cheap Speedglass helmet, They are great, the only problems I've had is sometimes the gun tip can shield the arc and the visor can
'flicker'
John
The reckless man may not live as long......
But the cautious man does not live at all.....
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Mark Allanson
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| posted on 2/8/04 at 08:44 PM |
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quote:
Originally posted by Cita
Is that a European standard Mark?
I have a clear glass in front of the green glas but it certainly is'nt spatter proof!
One other question Mark,when i weld two RHS sections together when flat on the table,the weld is reasonable.When it comes to welding the corners the
problems begin.I manage to get,in one stroke, a small layer on one box section and a small layer on the other section with inbetween a nice canyon.
Is there some technicque to overcome this?
The EW ratings are to BS standard, 8 is the lightest and 14 the darkest I have used, there may be others for specialist jobs that i havent come
across,
As for your welding problem, do you get 2 passes, one on the horizontal tube and one on the vertical, if so, I havent come across that one, have you
got any pictures? There are few welding technique problems which cannot be solved by turning up the power
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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James
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| posted on 3/8/04 at 09:40 AM |
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quote:
Originally posted by Mark Allanson
There are few welding technique problems which cannot be solved by turning up the power
Cita,
I wonder if your wire feed rate is too slow (if you up this you may need to up the power as well). Keep the torch at 45° so it's pointed right
at the root of the weld. You want to hold it about 8mm from the root.
Also, try cleaning out the shroud/tip (you can get special cutters to do this- I bought mine for £1 at a show and they're worth having) as I
guess it's possible that spatter build up inside is causing the arc not to flow properly.
Hope that helps,
James
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