Method and apparatus for producing uniform grain refinement in metal ingots

• US 3,193,889 A
• Filed: 07/24/1961
• Issued: 07/13/1965
• Est. Priority Date: 07/24/1961
• Status: Expired due to Term

• Current Assignee: Occidental Chemical Corporation (Occidental Petroleum Corporation)
• Original Assignee: Donald H. Lane, Jack Mcdonald, James W. Cunningham, William A. Tiller
• Inventors: Lane, Donald H., Cunningham, James W., Mcdonald, Jack, Tiller, William A.
• Application Number:
  US04/126,156
• Time in Patent Office: 1,450 Days
• US Class Current: 164/48
• CPC Class Codes: B22D 27/20 Measures not previously mentioned for influencing the grain structure or texture; Selection of compositions therefor
• CPC Class Codes: B22D 7/005 from non-ferrous metals
• CPC Class Codes: C22B 4/00 Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys obtaining iron or steel C21B, C21C
• CPC Class Codes: C22B 9/20 Arc remelting

Claims

1. AN ELECTRIC ARC-MELTING FURNACE COMPRISING AN ELONGATED CRUCIBLE CAPABLE OF CONTAINING A SOLIDIFYING INGOT, A MELTING ELECTRODE DISPOSED IN THE CRUCIBLE, SAID CRUBILE COMPRISING SIDE WALLS AND A BOTTOM CLOSURE, MEANS SEALING THE BOTTOM CLOSURE TO THE SIDE WALLS TO PROVIDE A GAS-TIGHT SEAL, SAID BOTTOM CLOSURE ADAPTED TO BE WELDED TO SAID SOLIDIFYING INGOT AND AN ULTRASONIC TRANSDUCER UNIT COMPRISING A WAVE TRANSMITTING COULPLING BAR AND A TRANSDUCER STACK ATTACHED BY A LOW LOSS JOINT TO THE BAR, THE WAVE TRANSMITTING COUPLING BAR OF THE TRANDUCER UNIT BEING INTEGRAL WITH THE BOTTOM CLOSURE, WHEREBY ULTRASONIC ENERGY IS DIRECTLY TRANSMITTED THROUGH THE SAID WAVE TRASMITTING COUPLING BAR TO THE BOTTOM CLOSURE OF THE ELONGATED CRUCIBLE AND THENCE DIRECTLY TO MOLTEN METAL