FIELD: metallurgy.
SUBSTANCE: in volume of skull crucible it is created sign-changing magnetic field by electromagnet, magnetic conductor of which are ferromagnetic casing of furnace itself, ferromagnetic polar tips and ferromagnetic inserts with coils, connected to intermittent source of current source and during melting there are compensated impact of magnetic field of ferromagnetic casting mould for gradient of circuit current. consumable electrode - voltaic arc - wall accretion - capsule casing by oncoming magnetic field of casting mould, created by means of its installation into solenoid, coils of which are connected to source of direct current for period of melt discharge from capsule into casting mould and formation of ingot switched on arc current source and pulsed source of sign-changing current of exciting coil, and source of direct current of solenoid is transferred into mode of short unidirectional pulses current with creation in walls of steel mould of magnetostriction for thickening of metal of formed ingot and impact on crystallisation of liquid metal in ingot to its mechanical oscillations.
EFFECT: invention allows to increase the quality of molten ingot and by means of increasing of metal density, increasing of explosion safety of melting process.
1 dwg
Title | Year | Author | Number |
---|---|---|---|
METHOD FOR MONITORING AND CONTROLLING OPERATION MODES OF SCULL VACUUM ELECTRIC ARC FURNACE | 2005 |
|
RU2304177C1 |
METHOD OF VACUUM-PLASMA MELTING OF METALS AND ALLOYS IN SKULL FURNACE AND FACILITY FOR ITS IMPLEMENTATION | 2007 |
|
RU2346221C1 |
METHOD OF FORMING METAL INGOT | 2005 |
|
RU2301841C2 |
METHOD OF AUTOCRUCIBLE MELTING OF METALS AND SLAG LINING FURNACE FOR REALIZATION OF THIS METHOD | 2003 |
|
RU2246547C1 |
METHOD OF PRODUCTION OF INGOTS BY VACUUM ARC AUTOCRUCIBLE MELTING | 1999 |
|
RU2154683C1 |
VACUUM ELECTRIC-ARC LINING-SLAG FURNACE | 2001 |
|
RU2194780C1 |
PROCESS OF WINNING OF INGOTS BY VACUUM ARC AUTOCRUCIBLE MELTING | 1999 |
|
RU2156316C1 |
METHOD OF METAL INGOT RECEIVING | 2007 |
|
RU2348712C2 |
VACUUM ELECTRIC-ARC SCULL FURNACE | 2005 |
|
RU2288287C2 |
METHOD AND DEVICE OF DISK BOTTOM TAPPING OF VOLKOV'S SYSTEM | 2004 |
|
RU2338622C2 |
Authors
Dates
2010-04-10—Published
2008-04-24—Filed