The root was put in with Kobelco Flux Cored TIG rod R308LT1-5 rod. This rod is used on the root only where a back purge is impossible. The flux that adheres to the backside of the weld protects the weld from oxidization. The hot pass and fill passes are welded with TIG solid wire ER308L.
I have a WPS that is qulaified for 0.120" to 0.480" that was welded with a root using GTAW Flux Cored Rod and filled out using solid GTAW rod. I have another WPS that was welded with GTAW Solid GTAW for the full thickness with a range of 0.074" to 0.864" (using 3 PQRs .148", .280" and .480")...
We are joining Cabon Steel P1 material, A106 Gr Bto CrMo P5B, 9 Cr 1 Mo. Should we use E-XXXX-B2L or E-XXXX-B8 or E-7018-1 elctrode. The operating temperature is 300 to 700 deg F. The weld will be preheated to 350 F and PWHT at 1350F.
What would be the affect of each of the electodes with...
I am joining ASME A335 grade P22(2-1/4 Cr 1 Mo) to A335 grade 5b(5 Cr 1/2 Mo). Which electrode should be used E9018-B3 or E8018-B6? Should the preheat and PWHT be performed in accordance with the P5b or the P5a material?
QW 401.3 allows for additional impact tests to supplement and existing PQR while maitaining the essential variables.
Question: The original PQT was qualified on 1/4" material and the additional impacts were conducted on 3/8" material.
Is the range for non impacted material 1/16" to 3/4" or...
