METHOD AND AN ELECTRON-BEAM FURNACE FOR INGOT PRODUCTION

• US 3,749,149 A
• Filed: 05/03/1971
• Issued: 07/31/1973
• Est. Priority Date: 06/15/1970
• Status: Expired due to Term

• Current Assignee: Alexel Lavrentievich Tikhonovsky, Boris Alexeevich Movchan, Boris Evgenievich Paton, Igor Stepanovich Pryanishnikov, Igor Vasilievich Perepelitsa, Jury Anatolievich Kurapoy, Pavel Petrovich Kucherenko, Rostislav Spiridonovich Misjura, Valentin Vasilievich Topilin, Vladimir Nikiforovich Zhuchin
• Original Assignee: Alexel Lavrentievich Tikhonovsky, Boris Alexeevich Movchan, Boris Evgenievich Paton, Igor Stepanovich Pryanishnikov, Igor Vasilievich Perepelitsa, Jury Anatolievich Kurapoy, Pavel Petrovich Kucherenko, Rostislav Spiridonovich Misjura, Valentin Vasilievich Topilin, Vladimir Nikiforovich Zhuchin
• Inventors: Paton, Boris Evgenievich, Movchan, Boris Alexeevich, Misjura, Rostislav Spiridonovich, Pryanishnikov, Igor Stepanovich, Zhuchin, Vladimir Nikiforovich, Topilin, Valentin Vasilievich, Perepelitsa, Igor Vasilievich, Tikhonovsky, Alexel Lavrentievich, Kurapoy, Jury Anatolievich, Kucherenko, Pavel Petrovich
• Primary Examiner(s): Overholser, J. Spencer
• Assistant Examiner(s): Roethel, John E.
• Application Number:
  US05/139,464
• Time in Patent Office: 820 Days
• Field of Search: 164/50,250,84,85,87,88,136,276,335 219/6A,6R 118/49.1,49.5 425/220,425 141/283
• US Class Current: 164/494
• CPC Class Codes: C22B 9/228 by particle radiation, e.g. electron beams

Abstract

The method of the present invention provides for melting a metal charge in an electron-beam furnace over a tundish and for solidifying molten metal in a mould the capacity of which is increased in a horizontal direction as it is filled with hot metal. The capacity of the mould is increased by moving its trough-shaped casing in a horizontal plane relative to its internal partition. In order to produce multi-layer ingots, the internal partition is lifted for a distance equal to the thickness of the previous solidified layer of the ingot. Electron-beam surface for realizing this method includes a vacuum chamber, a charger, and electron guns.

Claims

1. A method for the production of slab-like ingots, comprising the steps of melting metal in an electron-beam furnace over a tundish;

transferring the molten metal from said tundish into a mold made in the form of a trough-like tray whose length is divided by a vertical partition extending transverse said tray;

moving said mold horizontally lengthwise relative to said partition to increase the volume of the space to be filled with liquid metal; and

pouring molten metal into said mold to form the slab-like ingot.

2. The method as claimed in claim 1, comprising the further steps of vertically moving said partition to a height equal to the thickness of a preceding slab-like ingot;

returning said mold to its initial position; and

again pouring molten metal therein to form another layer of the slab-like ingot.

3. An electron-beam furnace for the production of slab-like ingots comprising a vacuum chamber;

charging means to supply said chamber with metal to be remelted;

electron-beam guns to melt said metal within said electron-beam furnace;

a water-cooled tundish for molten metal located within said vacuum chamber;

a mold in the form of a trough-like tray adapted to move lengthwise in a horizontal direction;

a vertical partition within said chamber adapted to enter the mold space of said mold and transversely divide it; and

means for moving said mold lengthwise in a horizontal plane relative to said partition so as to increase the volume of the molding space.

4. The electron-beam furnace as claimed in claim 3, wherein said partition is adapted to move vertically relative to said mold, there being power means to accomplish this vertical movement.