formulas

By weldgault (**)

Date 01-24-2008 19:15

There have to be a lot of questions answered, before an answer can be given.: Volts, amps, wire, Process, gas Etc. John

By EVWELDER (**)

Date 01-24-2008 20:07

Yea I figured that I was just hoping somebody had a way to figure weld time for maybe biding for a job where you really won't know your amps or volts untill you get started where you do know you process,gas etc..

By webbcity (***)

Date 01-24-2008 20:30

EVWELDER , just talked to my brother he's doing paper work and is going to pitch all the old bid info. he has saved for 30+ years every thing has changed lately . nothing still cost the same production rates have fallen skilled workers are disapering fast . i told him to retire but he will probably suffer thru a couple more years . it looks like all consumables prices keep going up . you may have to figure out every thing for each job and put in price increases . good luck . willie

By weldgault (**)

Date 01-24-2008 20:33

All Overhead X 1.75% is what most I know use. John

By Lawrence (*****)

Date 01-24-2008 21:50 Edited 01-24-2008 21:53

The AWS publishes
Certified Welding Supervisor Manual For Quality and Productivity Improvement

Total Welding Management by J.R Barckhoff is also a good read for folks with questions like yours.

These volumes look systemically at production... Weld volume, Arc time per weldment, Reject/Scrap reduction, Reduced work effort, and reduced motion and Delay times....
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I like the systemic approach as opposed to putting out fires as they break out. It requires a big time investment in process control but you will find that it can save millions if you are producing at any kind of volume.

By EVWELDER (**)

Date 01-25-2008 13:27

Thanks guys this gives me a plece to start.

By CHGuilford (****)

Date 01-25-2008 14:15

An excellent esource is Lincoln's "The Procedure Handbook of Arc Welding". It's a 2 inch thick book available for reasonable cost. If your local Lincoln distributor doesn't have it, you can order it on line at https://ssl.lincolnelectric.com/foundation/store.asp?PID=16&cat=8