EFFECT OF MULTIPLE WELD REPAIRS AND 400F INTERPASS TEMPERATURE ON PIPING PERFORMANCE.
Abstract
Multiple weld repairs, either within the confines of the original girth butt welds or extending into the base metal to broaden the weld to 3 times its original width, did not significantly reduce the fatigue properties of carbon-steel joints. Either of the two types of multiple weld repairs caused degradation of fatigue properties of nickel-copper and copper-nickel weld joints. The use of a 400-450 F weld interpass temperature did not lower the fatigue properties of nickel-copper welds. The use of 400-450 F weld interpass temperature did lower the fatigue properties of copper-nickel welds. The fatigue life of joints welded with the consumable insert in the copper-nickel pipe was substantially greater than the fatigue life of weld joints made when using the integral-backing-ring joint design evaluated during the previous program. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 30, 1964
- Accession Number
- AD0629650
Entities
People
- D. C. Martin
- D. E. Conklin
- L. G. Beall
- R. P. Meister
- W. S. Hyler
Organizations
- Battelle Memorial Institute