Sunday, April 24, 2011

[MW:10818] Inconel 625 overlay on AISI4140

Dear Friends,
 
Could anyone  pl. advice or guide us  as we wanted to weld corrosion resistant overlay of Inconel 625 on AISI 4140 on a used sub sea equipment in the oil and gas sector , where in the application demands severe Tensile and cyclic loads  on the component . The overlay shall be of approximately 4~5mm on a 100 mm thick section .
 
The vendor has submitted us two procedures with pulsed GMAW (Auto ) welding process having with and without  PWHT . When we referred the procedure with PWHT  we found that  the procedure is qualified (at  540 degreeC @ soaking time 2hrs and rate of heating 150 degree C/Hr)
 
can anyone help me out to send the literature with and without PWHT
 
Best regards
venu
 
 


 

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