Appropriate calculation method for Heat Input

Please explain in more detail.

Dear Friends

Let me explain

Welding procdedure Specification ( WPS ) written instruction for welders to perform welding within ranges shown.

Upon successful conclusion Wedling Procedure Qulaification Test, Welding Procedure Specification shall provide in accordance to applicable Codes( AWS D1.1 / ASME SECT IX) Welding parameteres allowable ranges( Amperage / Voltage /Travel Spped),ie Minimum ( Min ) and maximum ( Max ) range allowable. Based on these ranges Minimum and Maximum allowable Heat Input calcualted.

Question is

What is the appropriate method of calculating Heat Input =

a) Minimum Amp x Minimum Voltage x 60 / Minimum Travel Speed x 1000 OR

b) Minimum Amp x Minimum Voltage x 60 / Maximum Travel Speed x 1000

Hope now we all have better/clear understanding of my question.Thks

i would like to differ with the above formula to calculate heat input.The formula to be used is as follows

Heat Input Q =[k(factor) x U(Minimum Volts) x l(Minimum Amp) / Minimum Travel Speed] x 10^-3

k(factor)=Tig welding 0.6 & MMA 0.8

Dont you use K factors in the us like we do in the DS/EN standarts we have different k factors for SAW-GMAW-FCAW in the equation otherwise we use the same form.

Dear Mr.Gane,

Your message is not clear. It appears to me that you are mixing two different units like Amps, Voltage which are of Electrical and Travel Speed is Mechanical.

Pl. be clear in expressing your problem and re-post it. We shall try to answer it.

DHAYANANDHAN.S