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  • Users: DonRoss
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  1. DonRoss

    Qualification of Dissimilar Base Metal Thickness with Impacts

    Hi, I'm looking for some insight and or clarification on what the qualified base metal thickness would be with impacts if welding a 0.24" P6-Group 1 plate to a .375" P6-Group 4 plate, single sided butt-weld, beveled accordingly with no taper. QW-202.4 Dissimilar Base Metal Thicknesses WPS...
  2. DonRoss

    P6 to P6 Procedure, Including CA6NM without PWHT

    In lieu of developing some P6 procedures using Low Carbon E(R)410NiMo fillers, my employer has tasked to develop a WPS for welding P6 to P6 without PWHT. As permitted by ASME UHA-32, under P6 Gr 1, 2, 3 materials; PWHT is not required for pressure retaining components made from 410 SS materials...
  3. DonRoss

    PWHT Times & Temperatures for P6 Gr 1 (S41000) to P6 Gr 4 (CA6NM Class B)

    Hello all, I developed a P6 Gr 1 (S41000) to P6 Gr 4 (CA6NM Class B) WPS that require impacts as well as requirements for NACE and as such there are few details I require insight on. Background: In brief, we’re qualifying 1.5” Thk coupons to qualify thickness ranges of 5/8” to 8” thk and...
  4. DonRoss

    QW-403.6 Minimum Base Metal Thickness Qualified and PQR Thickness Limits

    Hi, I developed a P1 to P1 procedure using 1-1/2" thick coupon to qualify weld deposit thicknesses of 3/16" to 8" [5/8" to 8" with impacts as QW-403.6 permits] and a 3/16" thick coupon for 1/16" to 3/8" [3/32" to 3/8" with impacts as QW-403.6 permits]. To qualify this procedure for impacts I...
  5. DonRoss

    Port & Polish to a mirror finish

    Hi gentlemen I had just recently completed a port and polish on my 1.8T 5v head. I ported both intake and exhaust and only mirror polishing the chamber and exhaust ports, the intake ports are to scotch brite/satin finish. I'd appreciate any comments or insight on having such a surface finish...
  6. DonRoss

    High Knock Sensor Output on 1 out of 4...

    Hello, I'm not a regular on this forum but have been spectating...and I couldn't think of a better place to post my problem that perhaps you gentlemen can give a little more insight on. I am VW enthusiast and about 2 weeks ago I had bent a stock rod on cyl 1 by a 30 psi spike in boost and...

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