EFFECT OF NEW METHODS OF REMELTING AND OF ARGON PURGING ON THE PROPERTIES OF EP-65 STAINLESS STEEL (VLIYANIE NOVYKH METODOV VYPLAVKI I PRODUVKI ARGONOM NA SVOISTVA NERZHAVEYUSHCHEI STALI MARKI EP-65),
Abstract
EP-65 steel is used to fabricate high-load-bearing elements that withstand temperatures of up to 500C, and its melting involves the formation of a large amount of gases and nonmetallic occlusions which cause hairline cracks and other defects in the products and reduce the mechanical properties of the steel. In this connection, the authors investigated the effect of new production techniques -- vacuum induction melting, electroslag melting and argon degassing -- on the quality of this steel. Argon degassing was carried out by bubbling argon through a ladle of 500 kg capacity, via a porous refractory plug at ladle bottom, for 2-3 min; the plug was designed by the authors. The steel from the induction furnaces and after argon degassing was cast into ingots weighing 50 and 100 kg. The 50-kg ingots were used to prepare specimens and the 100-kg ingots, as consumable electrodes for remelting in a vacuum induction furnace, or in an ANF-6 electroslag furnace. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 30, 1967
- Accession Number
- AD0673753
Entities
People
- A. V. Stepanov
- P. I. Melikhov
Organizations
- National Air and Space Intelligence Center