DEVELOPMENT OF IMPROVED METHODS, PROCESSES, AND TECHNIQUES FOR PRODUCING STEEL EXTRUSIONS.
Abstract
Due to the lack of ductility in drawn sections of PH15-7Mo as a result of cold working, it is advisable to straighten warm. It is not practical to preheat such thin sections and then stretch because of their high cooling rate. Provisions should be made to provide heating during the stretching operation. When drawing such thin sections as less than 0.060 thick the shock connected with a manual draw bench hookup is excessive. It is most advisable to utili/e a draw bench which has provisions for starting from zero chain speed. Selection of draw temperature according to hardness values shown after each draw pass is beneficial in reducing or eliminating further work hardening in subsequent drawing. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1963
- Accession Number
- AD0421870
Entities
People
- L. M. Christensen