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[MW:12260] If Dia of Filler Rod changes what would be Volts , Amps & Travel Speed

By Materials & Welding

Dear all

 

I need to make a WPS as per ASME SEC IX & Construction Code is ASME B31.3

 

PQR :  12” 42 THK 

Material :  SA335 P22

Process :  GTAW + SMAW

 

Actual Filler Wire Used in PQR  : 3.2 mm  Dia Rod  ( Amps : 100 ~ 125  , Volts : 23 ~ 26 , Travel Speed : 10 ~ 15 Cm / Min )

 

But in our site we are using 2.4mmm , 3.2 mm , 4.0 mm Dia Filler Rods

 

I want to make a WPS mentioning Current , Volt  , Travel speed for this 2.4 mm & 4.0 mm Rod also .

 

What basis  and Which clause I can get consequent A , V & TS  ?  

 

 By below clause we can support our WPS but cant get the value for A , V & TS .

                                             

                                               (i) 404.3 Change in Size of Filler metal is Non Essential Variable

                                               (ii) 409.8 Change in I & E Range is an Non Essential Variable

                                               (iii ) 409.1  Heat input increase in Supplementary Essential Variable . My case no need Impact Testing

 

 

Thanks and Regards

 

A.P.Abraham ,

Qatar .

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