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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
Posted to uk.rec.models.engineering,rec.crafts.metalworking
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Spot welder "Compensator" ??
Does anyone know what the 'compensator' circuits of portable spot
welders is and how they achieve their objective? I know (from adverts) that they are supposed to compensate for slight contamination of the sheets with oil and paint and are recommended for use with galvanised sheet - but haven't a clue how they do it. I've just acquired a "SIP M2 Spotmatic" (labelled M22 !) with compensator, and sure enough it seems to have no problems with light oil and galvanising but WHAT is the compensator doing?????? The works look the same as my broken spot welder - just a wacking great single turn on a mains transformer with a timer added. Puzzling ! AWEM |
#2
Posted to uk.rec.models.engineering,rec.crafts.metalworking
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Spot welder "Compensator" ??
some spotwelders have feedback via resistance to adjust power and report on
good or failed weld this is on the car units I have used ARO / welding star could be the same Andrew Bishop "Andrew Mawson" wrote in message ... Does anyone know what the 'compensator' circuits of portable spot welders is and how they achieve their objective? I know (from adverts) that they are supposed to compensate for slight contamination of the sheets with oil and paint and are recommended for use with galvanised sheet - but haven't a clue how they do it. I've just acquired a "SIP M2 Spotmatic" (labelled M22 !) with compensator, and sure enough it seems to have no problems with light oil and galvanising but WHAT is the compensator doing?????? The works look the same as my broken spot welder - just a wacking great single turn on a mains transformer with a timer added. Puzzling ! AWEM |
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