A method and device of induction hardening of a circular mechanical component part (3), where at least four inductors (5-8) are arranged, in pairs, in tandem with respect to an annular surface (2) to be hardened, a first inductor (5) of a first pair (15) being operatively associated with a first cooling shower (16) arranged immediately adjacent to a second cooling shower (18) operatively associated with a first inductor (7) of a second pair (17). The inductors and the corresponding showers of each pair (15,17) are fed and rotated with respect to one another and to the annular surface (2) to be hardened, so that the second pair (17) of inductors leaves the first pair (15) from the side of the first shower (16) to be repositioned in tandem adjacent to the first pair (15) on the opposite side; at this point, at least two inductors (6,8) are no longer fed and are moved away from the surface (2) to be hardened, while continuing the relative rotation of the other inductors; finally, all the inductors (7,8) along with the first and second showers (16,18) are no longer fed and are moved away from a portion (200) of the surface to be hardened on which they insist at that moment, by replacing them with a third shower (20) by means of which such a portion (200) is cooled.
C21D 1/10 - Durcissement de surface par application directe d'énergie électrique ou ondulatoireDurcissement de surface par radiation particulaire par induction électrique
C21D 9/34 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour bandages de rouesTraitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour jantes
C21D 9/40 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour anneauxTraitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour roulements de paliers
2.
METHOD AND DEVICE FOR OBTAINING A MULTICRYSTALLINE SEMICONDUCTOR MATERIAL, IN PARTICULAR SILICON
A device (1) for obtaining multicrystalline silicon, including: at least one crucible (3) made of quartz for the silicon, removably housed in a cup-shaped graphite container (4); a fluid-tight casing (5), including a fixed bottom half-shell (6) and a vertically mobile top half-shell (7); a top induction coil (12), set facing, with interposition of a graphite plate (14), the crucible, a lateral induction coil (16), set around a side wall (17) of the graphite container, and a bottom induction coil (18), set facing a bottom wall (19) of the graphite container and vertically mobile for varying the distance (D) from the bottom wall; and means (20) for a. c. electrical supply of the induction coils separately from one another; at least the lateral induction coil (16) includes a plurality of plane turns (13a...13e) set on top of one another, and means (25) for selectively short-circuiting, supplying or not supplying the turns, all together or separately one or more at a time and for varying the frequency of supply thereof all together or separately one or more at a time.
C30B 35/00 - Appareillages non prévus ailleurs, spécialement adaptés à la croissance, à la production ou au post-traitement de monocristaux ou de matériaux polycristallins homogènes de structure déterminée
3.
DEVICE FOR OBTAINING A MULTICRYSTALLINE SEMICONDUCTOR MATERIAL, IN PARTICULAR SILICON, AND METHOD FOR CONTROLLING THE TEMPERATURE THEREIN
A device (1) for obtaining multicrystalline silicon, including: at least one crucible (3) made of quartz for the silicon, removably housed in a cup-shaped graphite container (4); a fluid- tight openable casing (5); a top induction coil (12), set facing, with interposition of a graphite plate (14), the crucible, a lateral induction coil (16), set around a side wall (17) of the graphite container, and a bottom induction coil (18), set facing a bottom wall (19) of the graphite container and vertically mobile for varying the distance (D) from the bottom wall; and first means (20) for a.c. electrical supply of the induction coils separately from one another, and second means (21) for supply of a coolant within respective hollow turns of the induction coils; the bottom induction coil includes four spiral windings (31-34), arranged alongside one another according to a chequered scheme in one and the same plane of lie, which is defined by an insulated supporting plate (35); electrical switching means (40) enable in use selective connection of the four windings (31-34) to one another according to different configurations.
C30B 35/00 - Appareillages non prévus ailleurs, spécialement adaptés à la croissance, à la production ou au post-traitement de monocristaux ou de matériaux polycristallins homogènes de structure déterminée
4.
METHOD AND DEVICE FOR LOCALIZED INDUCTION HARDENING TREATMENT OF MECHANICAL COMPONENTS, SPECIFICALLY THRUST BLOCKS FOR LARGE-SIZED ROLLING BEARINGS
A method and device for induction hardening rolling tracks (4)of bearing thrust blocks (3). At least two inductors are used (6, 8) initially arranged in tandem, which are held at a prefixed distance from a surface (2) of the track and parallelly to the same; the thrust block (3) is rotated at a first angular speed (V1) with respect to a first inductor (6), held fixed, while a second inductor (8) is rotated in the same direction as the thrust block but at a second angular speed (V2), double the first, so as to leave a first side (22) of the first inductor (6) and, essentially after a complete rotation, arrange itself sided to a second side (23) of the first inductor, on the side opposite to the first; simultaneously, the inductors are electrically fed and at least one cooling shower (13a, b,d), operatively connected to the other inductors (6, 8), is actuated.
C21D 1/10 - Durcissement de surface par application directe d'énergie électrique ou ondulatoireDurcissement de surface par radiation particulaire par induction électrique
C21D 9/40 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour anneauxTraitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour roulements de paliers
37 - Services de construction; extraction minière; installation et réparation
Produits et services
Induction generators for welding, induction temper and temper for heat-treating metals. Installations for the heat treatment of metals. Installation and repair of induction generators and of installations for heat-treating metals.
09 - Appareils et instruments scientifiques et électriques
35 - Publicité; Affaires commerciales
37 - Services de construction; extraction minière; installation et réparation
41 - Éducation, divertissements, activités sportives et culturelles
Produits et services
Scientific, nautical, surveying, electric, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus for recording and transmission of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, computer data processing apparatus; fire-extinguishing apparatus; except apparatus and devices for vacuum annealing, gas analysis and for vacuum or humidity measurement. Advertising; business management; business administration; office functions. Building construction; repair; installation services. Providing of education; training; entertainment; sporting and recreational activities.
37 - Services de construction; extraction minière; installation et réparation
Produits et services
High induction and medium frequency generators for continuous welding of pipes and tubes of metal, total and partial annealing and reheating of pipes and tubes, induction hardening and heat treatment in general of metal parts. Installation and repair of high induction and medium frequency generators.
37 - Services de construction; extraction minière; installation et réparation
Produits et services
Générateurs à induction à haute et moyenne fréquence pour le
soudage continu de tuyaux métalliques, recuits et
réchauffages totaux et partiels de tuyaux, pour trempe à
induction et traitement thermique en général de parties
métalliques. Services d'installation et de réparation de générateurs à
induction à haute et moyenne fréquence.
09 - Appareils et instruments scientifiques et électriques
35 - Publicité; Affaires commerciales
Produits et services
Unités de contrôle à ultrasons; câbles blindés spéciaux,
capteurs à ultrasons, appareillages de démonstration du
fonctionnement d'installations antivols, unités de
mémorisation d'alarmes, capteurs à micro-ondes, dispositifs
de protection contre les vols à main armée, centrales de
contrôle pour capteurs à micro-ondes; dispositifs de mise
hors circuit d'appareillages en panne, permettant de
brancher ou de débrancher une partie d'installation antivol;
dispositifs de signalisation sur lignes téléphoniques,
transmetteurs en code, récepteurs avec unité d'impression et
visualisation, combinés téléphoniques automatiques,
enregistreurs sur bandes magnétiques, dispositifs de
signalisation acoustique, avertisseurs acoustiques, sirènes
électroniques, détecteurs de gaz, détecteurs de fumée,
installations de centralisation de signaux pour l'industrie;
installations de centralisation de signaux pour immeubles
locatifs; dispositifs antivols électroniques. Services de publicité.
