TECHNOLOGY OF PRODUCTION AND MELTING OF EXTRUDED AND BRIQUETTED ELECTRODES FOR MELTING TITANIUM ALLOYS
Abstract
INVESTIGATION OF THE TECHNOLOGY OF MANUFACTURE OF PRESS-FORMED CONSUMABLE ELECTRODES FOR MELTING Ti alloys revealed that it was possible to use less powerful presses for this purpose than in pressing through a tapered die by extrusion. An investigation of rational distribution of alloying elements in the press-formed electrode demonstrated the practicability of placing them in the center of the briquet with the creation, around this, of a dense wall of pressed sponge preventing the fused mass of fusible alloys from escaping and also preventing intensified evaporation of elements of higher vapor pressure than Ti. It was also found that the reaction between Al and Ti sponge, prior to the time that it enters directly into the zone of fusion, is small. The quantity of sponge to be employed in the press forming of a consumable electrode by batchwise alloying rendered it impossible for the weight of a batch of sponge between 3 and 1.4 kg to affect uniformity of distribution of Al in the alloy and its mechanical properties. The method of batchwise alloying, using a ratio between the weight of the portion of sponge used in the press forming and the weight of the molten metal in bath, as high as 1 to 3, is dependable. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 28, 1961
- Accession Number
- AD0267735
Entities
People
- I.v. Polin
- Yu. I. Kozlovich
Organizations
- National Air and Space Intelligence Center