Principles of Incremental Forging: Phase III.
Abstract
The principles of deformation and of equipment design established in the first two phases formed the basis of development in this, third phase of the program. A subpress was designed and built, in which wedge-actuated side rams assured complete synchronization of the vertical (indenting) and horizontal (rib-forming) anvils. Interconnection of the controls of the hydraulic press with those of an electrically actuated manipulator allowed rapid and precise sequencing of deformation increments. The practicability of the process was demonstrated by hot forging 7075 Al and commercial purity titanium into parts with H-sections of 1/4 in. thick ribs and webs, incorporating stiffening cross-ribs. Lubrication became critical in hot forging; on the basis of solid film durability tests, a commercial resin-bonded graphite film was chosen for lubricating the anvils in forging 7075 Al, and in conjunction with a glass coating applied to the workpiece, also for Ti. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1973
- Accession Number
- AD0764618
Entities
People
- A. H. Lonn
- J. A. Schey
- T. F. Restivo
Organizations
- University of Illinois at Chicago