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  #31  
Old Thu 19 November 2009, 11:57
Claudiu
Just call me: Claus #43
 
Arad
Romania
No more thinking

Gerald I have followed your advise and a great job came out.
I was afraid at the beginning, but now looking back...piece of cake.

I wrote down the result in my threat. I don`t know how you want to handle this, but you can move it or copy it or cut it...here`s the result.

Thanks Gerald again for helping out.
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  #32  
Old Thu 19 November 2009, 12:23
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
How much weld current (Amps) did you use, and how far apart were your final welds?
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  #33  
Old Thu 19 November 2009, 14:23
Claudiu
Just call me: Claus #43
 
Arad
Romania
Gerald,

I worked with an old triodine (I don`t know if this term is known). It`s a three phase dc welder from 1965.

Amperage 150 Ah. 4.5mm sticks

I started with 3 welds each 40 mm long followed by a large gap of about 70 cm. I wanted a smooth bending so I started with the first three welds on a distance of about 1.7 meters, from the end of the beam just passing a little bit over half.
After cooling another weld 2 cm apart from the first. Then cooling...

It looked like this. -- =welding .....=space

--...................--.....................-- cooling
-- --................-- --.................-- -- cooling
-- -- --.............-- -- --..............-- -- -- cooling
-- -- -- --..........-- -- -- --...........-- -- -- -- cooling aso
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- end of procedure

until it got a complete line wiyh 40mm welds and 20-30mm spaces.

I will take some pics and post them later.

Good night
Claus

Last edited by Claudiu; Thu 19 November 2009 at 14:25..
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