premmington
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- 5,173
- Location
- Norfolk
We do a repetitive bolt extraction job sometimes.
Welded extraction.
Problems are: The lump of metal we extract the bolts from are magnetised.
So we have to go for AC. Due to arc blow.
Our AC stick welder only has an open circuit voltage of 42.7v AC (Transformer type)
We have a couple of DC inverters about with 80volt plus OCV - but we can't use them for the job - due to being DC.
We have been using -
Hilco Red Extras 3.2mm rated at 43v AC. Cost £41 per 5kg
or
Elga Cromarod 312 3.2mm rated at 37v AC. Cost £66 per 3kg (higher tensile).
I have had a job to buy the Hilco rods locally of late.
Anybody suggest another rod type?
Or a single phase AC MMA welder with a higher OCV?
The job involves allot of restarting the arc as well.
Would like to move away from 6013 and 312 rods. Positional welding is not easy with 6013 slag or 312 metal running everywhere - if you know what I mean!
I have not got the voltage to run 6010's or the heart-patience or skill to keep restarting 7018's even if I had the voltage.
Welded extraction.
Problems are: The lump of metal we extract the bolts from are magnetised.
So we have to go for AC. Due to arc blow.
Our AC stick welder only has an open circuit voltage of 42.7v AC (Transformer type)
We have a couple of DC inverters about with 80volt plus OCV - but we can't use them for the job - due to being DC.
We have been using -
Hilco Red Extras 3.2mm rated at 43v AC. Cost £41 per 5kg
or
Elga Cromarod 312 3.2mm rated at 37v AC. Cost £66 per 3kg (higher tensile).
I have had a job to buy the Hilco rods locally of late.
Anybody suggest another rod type?
Or a single phase AC MMA welder with a higher OCV?
The job involves allot of restarting the arc as well.
Would like to move away from 6013 and 312 rods. Positional welding is not easy with 6013 slag or 312 metal running everywhere - if you know what I mean!
I have not got the voltage to run 6010's or the heart-patience or skill to keep restarting 7018's even if I had the voltage.