NASA NTRS · 19720000384
Noncontaminating technique for making holes in existing process systems
Abstract
Technique is developed for making cleanly-contoured holes in assembled process systems without introducing chips or other contaminants into system. Technique uses portable equipment and does not require dismantling of system. Method was tested on Inconel, stainless steel, ASTMA-53, and Hastelloy X in all positions.
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Hecker, T. P., Czapor, H. P., Giordano, S. M.. 1972-07-01. Noncontaminating technique for making holes in existing process systems. https://ntrs.nasa.gov/citations/19720000384
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