Application of Rapid Heat Treating to Cannon Tubes
Abstract
In order to demonstrate the feasibility of shortened heat treatment cycles for gun tubes, eight forgings (four 105mm M68 and four 155mm M185) were subjected to reduced austenitizing and tempering times. Austenitizing time was held to 30 minutes at temperature as measured by thermocouples. Quenching was accomplished by either vertical immersion, horizontal immersion or horizontal spray. The results showed that accepted mechanical properties could be attained with these shortened cycles. However, the shortened cycles must be established for a particular component with consideration for material variation, especially chemical segregation, which seriously affects transformation behavior. Nevertheless, in view of the present and future costs of firing heat treat furnaces and the potential increase in production capacity, reduced heating times can be highly significant.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1979
- Accession Number
- ADA075341
Entities
People
- P. A. Thornton
Organizations
- United States Army Armament Research, Development and Engineering Center