Hot Wall Thickness Variation Measurement System
Abstract
With the introduction of the rotary forge at the Watervliet Arsenal, a new line of inspection equipment was required. The need to design inspection equipment to measure hot cannon tubes in the 'as forged' condition created gaging problems not often encountered in industry. Forgings must be inspected immediately off the forging machine to monitor uniformity of wall thickness. Any tendency toward excessive wall thickness variation must be detected immediately and corrective measures taken. The rate of forge operation could result in the production of many rejectable tubes if inspection was delayed until the forging cooled. The inspection system required development of a new application technique for ultrasonics. Hydraulic pressure is used to bring transducers in contact with the hot forgings and to establish coupling between the transducer and the forging. Wall thickness measurements are taken simultaneously at four positions around the tube circumference and a wall thickness variation at that cross-section is printed out.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1979
- Accession Number
- ADA074421
Entities
People
- S. J. Krupski