ES2304123A1 - Superficial hardening procedure for sinfines (Machine-translation by Google Translate, not legally binding) - Google Patents

Superficial hardening procedure for sinfines (Machine-translation by Google Translate, not legally binding) Download PDF

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Publication number
ES2304123A1
ES2304123A1 ES200800812A ES200800812A ES2304123A1 ES 2304123 A1 ES2304123 A1 ES 2304123A1 ES 200800812 A ES200800812 A ES 200800812A ES 200800812 A ES200800812 A ES 200800812A ES 2304123 A1 ES2304123 A1 ES 2304123A1
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Spain
Prior art keywords
propeller
induction
wing
translation
machine
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Granted
Application number
ES200800812A
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Spanish (es)
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ES2304123B1 (en
Inventor
Ramon Tarrago Griset
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SINFINES MIRALLES SL
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SINFINES MIRALLES SL
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Priority to ES200800812A priority Critical patent/ES2304123B1/en
Publication of ES2304123A1 publication Critical patent/ES2304123A1/en
Application granted granted Critical
Publication of ES2304123B1 publication Critical patent/ES2304123B1/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G33/00—Screw or rotary spiral conveyors
    • B65G33/24—Details
    • B65G33/26—Screws
    • B65G33/265—Screws with a continuous helical surface
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0093—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for screws; for bolts
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like

Abstract

Surface hardening procedure for augers. This procedure comprises the phases of: - cutting and winding the propeller (1) cold; - coupling of the propeller (1) on the central shaft (2) and, - induction hardening of the outer part (3) of the propeller (1). Induction hardening is done from the outer edge of the propeller (1) or wing inwards. The induction hardening comprises the heating of the outer part (3) of the propeller by means of an induction generator (5) and its cooling, immediately afterwards, by means of a cooling equipment (6). (Machine-translation by Google Translate, not legally binding)

Description

Procedimiento de endurecimiento superficial para sinfines.Surface hardening procedure for augers

Objeto de la invenciónObject of the invention

La presente invención se refiere a un procedimiento de endurecimiento superficial para sinfines en general, del tipo utilizado principalmente para el transporte de producto a granel, ya sea en pasta o como sólido disgregado.The present invention relates to a surface hardening procedure for augers in general, of the type used primarily for the transport of bulk product, either in paste or as a disintegrated solid.

Antecedentes de la invenciónBackground of the invention

En la actualidad es común el uso de sinfines para el transporte de productos a granel, tal como pastas, líquidos viscosos y sólidos finos o polvos. Estos sinfines comprenden un cuerpo cilíndrico exterior en cuyo interior se encuentra el sinfín propiamente dicho, conectado por un extremo a un motor que lo hace girar. Este sinfín por efecto del giro permite desplazar el producto desde un extremo del cuerpo cilíndrico hasta el otro extremo.Nowadays it is common to use augers for the transport of bulk products, such as pastes, liquids viscous and fine solids or powders. These augers comprise a outer cylindrical body inside whose auger is proper, connected at one end to an engine that does turn. This endless spin effect allows to move the product from one end of the cylindrical body to the other extreme.

En muchos casos, estos materiales a transportar por el sinfín son agresivos o pueden producir un alto desgaste en el material, lo que lleva al rápido deterioro del sinfín.In many cases, these materials to be transported by the endless they are aggressive or they can produce a high wear in the material, which leads to the rapid deterioration of the auger.

El sinfín está constituido principalmente por un eje central y una hélice o ala exterior, estando la ala exterior conformada en frío con aceros especiales para que puedan ofrecer una resistencia al desgaste mayor. Sin embargo, dicha conformación del ala mediante enrollamiento en frío contribuye a que en el material aparezcan tensiones internas que lo hacen más frágil y susceptible de deterioro.The auger is mainly constituted by a central axis and a propeller or outer wing, the outer wing being cold formed with special steels so they can offer greater wear resistance. However, said conformation of the wing by cold rolling contributes to the material appear internal tensions that make it more fragile and susceptible to deterioration.

El uso de aceros especiales para la realización del ala por conformación en frío, es común. También existe la posibilidad de incrementar la dureza del sinfín mediante un temple convencional, pero el uso de un tratamiento de temple a todo el sinfín no resulta rentable, dado que el volumen de la pieza es considerable y la zona a endurecer es concretamente el extremo exterior del ala. Además, calentar toda una pieza esbelta y de paredes finas puede provocar que se deforme.The use of special steels for the realization of the wing by cold forming, is common. There is also the possibility of increasing the hardness of the auger by means of a temper conventional, but the use of a tempering treatment at all endless is not profitable, since the volume of the piece is considerable and the area to harden is specifically the end outer wing. In addition, heat a whole slender piece of thin walls can cause it to deform.

Así, el problema a resolver consiste en poder dar al ala la dureza superficial necesaria en las zonas en las que se puede someter a un mayor desgaste por el rozamiento con el producto a transportar.Thus, the problem to solve consists in being able to give the wing the necessary surface hardness in the areas where it can be subjected to greater wear due to friction with the product to be transported

Descripción de la invenciónDescription of the invention

El procedimiento de endurecimiento superficial para sinfines, objeto de esta invención, presenta unas particularidades técnicas destinadas a facilitar la labor de fabricación de un sinfín de transporte de materias abrasivas o que puedan someter dicho sinfín a gran desgaste.The surface hardening procedure for augers, object of this invention, presents some technical particularities intended to facilitate the work of manufacture of endless transport of abrasive materials or that They can subject this auger to great wear.

Así el procedimiento comprende las fases de:Thus the procedure includes the phases of:

--
corte y enrollado de la hélice en frío,cut and rolled the propeller cold,

--
acoplamiento de la hélice sobre el eje central portador,propeller coupling on the shaft carrier center,

--
temple por inducción de la parte exterior de la hélice.quenching by induction of the outside of the propeller.

El temple por inducción se realiza desde el borde exterior y hacia el interior de la hélice o ala, de forma que se protegen en mayor medida las zonas correspondientes a la parte exterior de la hélice o ala, que están sometidas a una mayor fricción y desgaste.Induction hardening is performed from the outer and inward edge of the propeller or wing, so that the areas corresponding to the part are protected to a greater extent outside of the propeller or wing, which are subject to greater friction and wear

La amplitud de la zona a templar desde el borde exterior y hacia el interior del ala es variable, dependiendo del uso que se vaya a dar al sinfín y especialmente del tipo material que se vaya a transportar con el sinfín.The amplitude of the zone to be tempered from the edge outside and inside the wing is variable, depending on the use to be given to the auger and especially of the material type to be transported with the auger.

Este temple por inducción comprende el calentamiento del sinfín mediante un generador de inducción y el enfriamiento inmediatamente posterior mediante un equipo de refrigeración adecuado. El acero sometido al efecto del cabezal de inducción alcanza rápidamente la temperatura de templado, sin que sea necesario calentar todo el material de la hélice o ala, lo que representa un importante ahorro de energía en el proceso de templado. Inmediatamente después, el equipo de refrigeración, asociado a dicho generador de inducción, provoca que el acero superficial cristalice en estructuras más duras y resistentes, manteniendo el acero del interior del ala unas propiedades mecánicas adecuadas.This induction hardening comprises the auger heating by means of an induction generator and the immediate subsequent cooling by means of a adequate cooling The steel subjected to the effect of the head of induction quickly reaches the tempering temperature, without it is necessary to heat all the material of the propeller or wing, which represents an important energy saving in the process of tempered. Immediately after, the refrigeration equipment, associated with said induction generator, causes the steel superficial crystallize in harder and stronger structures, keeping the steel inside the wing mechanical properties adequate.

La dureza superficial resultante es dependiente de la composición del acero al que se le aplica el temple. Experimentalmente se llegan a conseguir aumentos de dureza de hasta el 250% respecto a una ala sometida solo a proceso de enrollado en frío.The resulting surface hardness is dependent of the composition of the steel to which the hardening is applied. Experimentally, hardness increases of up to 250% with respect to a wing submitted only to the winding process in cold.

Descripción de las figurasDescription of the figures

Para complementar la descripción que se está realizando y con objeto de facilitar la comprensión de las características de la invención, se acompaña a la presente memoria descriptiva un juego de dibujos en los que, con carácter ilustrativo y no limitativo, se ha representado lo siguiente:To complement the description that is being performing and in order to facilitate the understanding of characteristics of the invention, is attached herein descriptive a set of drawings in which, for illustrative purposes and not limiting, the following has been represented:

- La figura 1 muestra una representación esquemática del procedimiento de endurecimiento de la ala del sinfín.- Figure 1 shows a representation schematic of the hardening procedure of the wing of the endless.

Realización preferente de la invenciónPreferred Embodiment of the Invention

Como se puede observar en las figuras referenciadas el procedimiento comprende tras el corte y enrollado de la hélice (1) en frío y el acoplamiento de dicha hélice (1) sobre el eje central portador (2) la aplicación de un temple por inducción de la parte exterior (3) de la hélice (1).As can be seen in the figures referenced the procedure includes after cutting and rolling of the cold propeller (1) and the coupling of said propeller (1) on the central carrier axis (2) the application of a temper by induction of the outer part (3) of the propeller (1).

Dicho temple se lleva a cabo mediante un cabezal (4) que comprende un generador de inducción (5) y un equipo de refrigeración (6) adjunto, para producir un calentamiento rápido y un enfriamiento súbito de la zona superficial de la parte exterior (3), que es calentada de forma muy localizada, lo que provoca un cambio estructural de dicha zona superficial de la hélice (1) del sinfín.Said quenching is carried out by means of a head (4) comprising an induction generator (5) and an equipment of cooling (6) attached, to produce rapid heating and a sudden cooling of the surface area of the outer part (3), which is heated in a very localized way, which causes a structural change of said surface area of the propeller (1) of the endless.

Dicho temple se realiza sobre la hélice (1) principalmente, desde su borde exterior hacia el eje central portador (2). Así la parte exterior (3) de la hélice (1) presenta una dureza superficial que configura una mayor resistencia al desgaste.Said quenching is performed on the propeller (1) mainly, from its outer edge to the central axis carrier (2). Thus the outer part (3) of the propeller (1) presents a surface hardness that configures a greater resistance to wear.

Una vez descrita suficientemente la naturaleza de la invención, así como un ejemplo de realización preferente, se hace constar a los efectos oportunos que los materiales, forma, tamaño y disposición de los elementos descritos podrán ser modificados, siempre y cuando ello no suponga una alteración de las características esenciales de la invención que se reivindican a continuación.Once nature is sufficiently described of the invention, as well as a preferred embodiment, for the appropriate purposes that the materials, form, size and arrangement of the elements described may be modified, as long as this does not imply an alteration of the essential features of the invention claimed in continuation.

Claims (3)

1. Procedimiento de endurecimiento superficial para sinfines, siendo el sinfín del tipo constituido por un eje centra portador (2) y al menos una hélice (1) o ala exterior, caracterizado porque comprende las fases de:1. Surface hardening process for augers, the auger being of the type consisting of a carrier center shaft (2) and at least one propeller (1) or outer wing, characterized in that it comprises the phases of:
--
corte y enrollado de la hélice (1) en frío,cut and winding the propeller (1) cold,
--
acoplamiento de la hélice (1) sobre el eje central portador (2),coupling of the propeller (1) on the central carrier axis (2),
--
temple por inducción de la parte exterior (3) de la hélice (1).quenching by induction of the outer part (3) of the propeller (1).
2. Procedimiento, según la reivindicación 1, caracterizado porque el temple por inducción se realiza desde el borde exterior de la hélice (1) o ala hacia el interior.2. Method according to claim 1, characterized in that induction hardening is carried out from the outer edge of the propeller (1) or inward wing. 3. Procedimiento, según la reivindicación 1, caracterizado porque en el temple por inducción se realiza el calentamiento de la zona exterior de la hélice mediante un generador de inducción (5) y el enfriamiento, inmediatamente posterior, mediante un equipo de refrigeración (6).3. Method according to claim 1, characterized in that in the induction hardening the heating of the outer zone of the propeller is carried out by means of an induction generator (5) and the cooling, immediately afterwards, by means of a cooling equipment (6) .
ES200800812A 2008-03-19 2008-03-19 SURFACE TREATMENT PROCEDURE FOR WINDS. Expired - Fee Related ES2304123B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES200800812A ES2304123B1 (en) 2008-03-19 2008-03-19 SURFACE TREATMENT PROCEDURE FOR WINDS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200800812A ES2304123B1 (en) 2008-03-19 2008-03-19 SURFACE TREATMENT PROCEDURE FOR WINDS.

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ES2304123A1 true ES2304123A1 (en) 2008-09-01
ES2304123B1 ES2304123B1 (en) 2009-05-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016078847A1 (en) * 2014-11-17 2016-05-26 Zf Friedrichshafen Ag Cold treatment for improving the load-bearing capacity of metallic components

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592703A (en) * 1968-03-07 1971-07-13 United States Steel Corp Method for treating circular saw blades and product produced thereby
JPS62234618A (en) * 1986-04-04 1987-10-14 Isamu Saneoka Method and device for manufacturing screw shaft
DE10034357C1 (en) * 2000-07-14 2001-12-13 Elotherm Gmbh Apparatus, for hardening the surfaces which limit a recess between two teeth of a toothed wheel or a toothed rack, comprises an inductor for heating each surface, a quenching device
DE102006015669B3 (en) * 2006-04-04 2007-10-25 Adcuram Maschinenbauholding Gmbh Method for converting the metallic structure of a plasticizing screw comprises impinging the wear region with an alternating current, producing resistance heat to raise the wear region to a hardening temperature and cooling the region

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592703A (en) * 1968-03-07 1971-07-13 United States Steel Corp Method for treating circular saw blades and product produced thereby
JPS62234618A (en) * 1986-04-04 1987-10-14 Isamu Saneoka Method and device for manufacturing screw shaft
DE10034357C1 (en) * 2000-07-14 2001-12-13 Elotherm Gmbh Apparatus, for hardening the surfaces which limit a recess between two teeth of a toothed wheel or a toothed rack, comprises an inductor for heating each surface, a quenching device
DE102006015669B3 (en) * 2006-04-04 2007-10-25 Adcuram Maschinenbauholding Gmbh Method for converting the metallic structure of a plasticizing screw comprises impinging the wear region with an alternating current, producing resistance heat to raise the wear region to a hardening temperature and cooling the region

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016078847A1 (en) * 2014-11-17 2016-05-26 Zf Friedrichshafen Ag Cold treatment for improving the load-bearing capacity of metallic components

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