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Publication numberUS3911859 A
Publication typeGrant
Publication dateOct 14, 1975
Filing dateMar 1, 1971
Priority dateMar 20, 1969
Publication numberUS 3911859 A, US 3911859A, US-A-3911859, US3911859 A, US3911859A
InventorsBykovets Konstantin Petrovich, Dudko Daniil Andreevich, Maximovich Boleslav Ivanovich, Zavodyan Vitaly Voitsekhovich
Original AssigneeBykovets Konstantin Petrovich, Dudko Daniil Andreevich, Maximovich Boleslav Ivanovich, Z Vitaly Voitsekhovich
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Apparatus for building up with deposited metal the seating surfaces of valves
US 3911859 A
Abstract
Valve facing apparatus including an induction heater, cooling means directed at the backside of the valve to effect a temperature gradiant and a rotatable electromagnetic chuck which is actuated by means disposed within the chuck and responsive to positioning of the valve stem therein.
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Description  (OCR text may contain errors)

United States Patent [191 [111 3,911,859

Dudko et al. 1 Oct. 14, 1975 [54] APPARATUS FOR BUILDING UP WITH [58] Field of Search 279/1 M; 118/503, 1, 4; DEPOSITED NIETAL THE SEATING 33/DIG. l; 219/95, 85; 269/8; 335/1, 8, 9, SURFACES 0F VALVES 10; 51/266 [76] Inventors: Daniil Andreevich Dudko, pereulok Mechnikova, 3, kv. 7; Boleslav [56] References cued Ivanovich Maximovich, Bulvar Lesi UNITED STATES ATENTS Ukrainki, 2, kv. 52; Konstantin 2,637,115 5/1953 Watson 33/D1G. 1 Petrovich Bykovets, Prospekt 40 3,504,148 3/1970 Maximovich et a1. 219/95 Okyabrya 52; FOREIGN PATENTS OR APPLICATIONS Voitsekhovich Zavodyan, Bulvar Ivana Lepse, 55, kv' 20, all of Kiev, 743,582 l/1956 United Kingdom 118/620 U.S.S.R.

Primary ExammerMorris Kaplan [22] Filed: Mar. 1, I971 21 Appl. No.: 119,934 ABSTRACT Valve facing apparatus including an induction heater, Relted Apphcatlon Data cooling means directed at the backside of the valve to [63] f of 808928 March P effect a temperature gradiant and a rotatable electroa andone magnetic chuck which is actuated by means disposed U S Cl 118/1. 118/69 118/503 within the chuck and responsive to positioning of the 1 M valve stem therein. [51] Int. Cl. B05c 9/14 9 Claims, 2 Drawing Figures o W Z Sheet 2 of 2 3,911,859

U.S. Patent 0a. 14, 1975 APPARATUS FOR BUILDING UP WITH DEPOSITED METAL TI-IE SEATING SURFACES OF 1 VALVES This application is a continuation of application Se'r. No. 808,928, filed Mar. 20, 1969,:nowabandoned.

The proposed invention relates to the manufacturing of internal combustion engines and, more specifically, it concerns apparatus for metal deposition on-seating faces of valves. 1

The present invention may bealso used for building up by metal deposition components-for chemical and oil engineering equipment, as well as for steam and gas turbines.

Known in the prior art are apparatus for building up by metal deposition seating faces of valves comprising two inductors.

' One of these inductors is used for melting down the flux intended for chemical cleaning of the valve surfaces to be subjected to the metal deposition, and the other inductor is used for melting down the metal employed as a deposit.

The building up of seating surfaces of a valve is carried into effect by immersing the valve by means of a manipulator first into an inductor with molten flux and then into an inductor containing molten metal to be deposited.

The existing apparatus suffers from a number of disadvantages; they do not provide the necessary conditions for allowing directed solidification of the metal being deposited, are associated witha considerable consumption of this metal and with the need in an additional mechanical working of the built-up valves.

, An object of the present invention is to eliminate the above-said disadvantages.

The principal object of the invention is to provide an apparatus for metal deposition on seating faces of valves, which ensures a high quality structure of the metal being deposited at the minimum consumption thereof.

This object is attained by providing an apparatus for effecting metal deposition on seating faces of valves featuring an inductor for heating the valves, in which, according to the invention, there is employed a cooling system ensuring a temperature drop within the metal being deposited for allowing its directed solidification, and a clamping device for fixing the valve in such a position relative to the inductor, in which the metal deposition on the seating face of the valve is carried into effeet.

The clamping device of the proposed apparauts may be provided with a pickup indicating the position of the valve relative to the inductor during the process of deposition, and also with an actuating mechanism rigidly securing the valve upon the reception of a signal from the pickup.

In order to provide for a uniform heating of the seating faces of the valve and for convenient readjustment of the apparatus for the metal deposition on seating faces of valves of different sizes, the holding device is preferably provided with a drive ensuring rotation of the clamping device about its axis and its vertical displacement relative to the inductor.

Other objects and advantages of the present invention will become apparent from a consideration of the following detailed description of its exemplary embodiment, taken in conjunction with the accompanying drawings, in which:

FIG. l is a general view of the apparatus according tothe invention; FIG. 2 is a holding device in a longitudinal section, according to the invention. j The proposed apparatus for metal deposition on seating faces of valves comprises a bed 1 (FIG: 1) with a column 2 on which there are mounted a coolingsystem 3, a control board 4', and a working-head 5. The working head 5 includes a holding device 6, having a pickup 7 (FIG. 2) indicating the position of the valve and an actuating mechanism 8; a drive 9 (FIG. 1) for rotating the clamping device 6, and a drive 10 for its vertical displacement. Also mounted on the bed 1 is a draining tank I l. The apparauts is provided with an inductor l2 fixed to the post 13 for high-frequency heating. The cooling system 3 is adapted for vertical movement along the column 2, and is used for supplying a coolant to the end face of the valve to provide a temperature gradient within the metal being deposited for allowing its directed solidification.

The head 5 is capable of moving along the column 2 in vertical direction. The clamping device 6 is employed for fixing the valve in such a position relative to the inductor 12, so that the metal deposition on the valves is carried into effect. The checking of this position is effected by the pickup 7 indicating the valve position (FIG. 2). The actuating mechanism 8 which is a part of the clamping device 6 (FIG. 1), upon the reception of a signal from the pickup 7 indicating the valve position, fixedly secures the valve to be built-up with deposited metal. The drive 9 rotating the clamping device 6 and mechanically coupled thereto makes the clamping device 6 rotate at a predetermined speed. This contributes to the uniform heating of the valve being built-up with deposited metal.

The drive 10 for effecting vertical movement of the holding device 6 makes it possible to set the built-up valve of any size in a definite position relative to the inductor 12. The draining tank 11 is used for the collecting and removing of the liquid coolant.

For effective metal deposition on a seating surface of a valve, the proposed apparatus is controlled through a preset program of the process of metal deposition (necessary rotational speed of the clamping device 6, control of the power of the high-frequency heating post 13 and the operation time of these devices, the moment of operation of the cooling system 3, duration of supply of the coolant and the toatal time of the cycle).

All these preliminary operations are effected by means of the equipment mounted on the control board 4 as well as on the panel of the high-frequency heating post 13.

The apparatus for metal deposition on seating faces of valves operates as follows.

The valve prepared for the metal deposition is taken by the operator with the valve rod directed upwardly and introduced into the clamping device 6 up to the rest.

In this case, the pickup 7 indicating the position of the valve switches on the apparatus, and the latter instantly energizes the actuating mechanism 8 for rigidly securing the valve to be built-up with deposited metal in this working position.

After 1-2 seconds the apparatus automatically applics the voltage to the drive 9 for rotating the clamping device 6 and to the inductor I2.

After the predetermined period of time having been preset by the program, the apparatus automatically changes the operating conditions of the high-frequency heating post 13, supplying the inductor l2, and through the cooling system 3 feeds the coolant to the end face of the valve to be built-up with deposited metal.

In this case, a temperature drop is created within the metal being deposited, thus resulting in its directed solidification.

At the end of the cycle of the metal deposition, which is preset by the programm, the apparatus for metal deposition on seating faces of valves and the highfrequency heating post 13 supplying the inductor 12 are automatically cut off.

The operator removes the deposited valve and inserts the next valve prepared for the deposition.

the proposed apparatus makes it possible to obtain directed solidification of the metal being deposited, and this fact provides for a high quality of the built-up valves, reduces the consumption of extensive materials used in the process of metal deposition and, therefore, cuts the cost price of the built-up valves.

Furthermore, the apparauts may be introduced into the production line intended for mass production of valves at a specialized manufacturing plant.

We claim:

1. An apparatus for building up the seating sur aces of valves with deposited metal comprising an inductor for heating a valve, cooling means for decreasing the temperature with in said valve and causing directed solidification of said deposite metal, an electromagnetic chuck means for fixedly securing said valve in a position relative to said inductor for permitting the deposition of metal on the seating surface of said valve by inductive heating of said valve, and means actuating said electromagnetic chuck means upon introduction of the valve therein.

2. Apparatus according to claim 1, wherein said actuating means is operative when a predetermined position of the valve is reached.

3. An apparatus according to claim 1, wherein said chuck is rotatable about an axis and displaceable therealong and means for rotating said chuck means about its axis and for vertically displacing said chuck means relative to the inductor.

4. An apparatus according to claim 2, wherein said chuck means is rotatable about an axis and displaceable therealong, said apparatus further comprising means for rotating said chuck means about its axis and for vertically displacing said chuck means relative to the inductor.

5. An apparatus according to claim 3, wherein said actuating means is operative when a predetermined position of the valve is reached.

6. An apparatus according to claim 5, wherein said cooling means comprises means for directly supplying a coolant to said valve on the surface thereof opposite the seating surface on which deposited material is being built up 7. An apparatus according to claim 6, comprising means for vertically moving said cooling means relative to said valve.

8. An apparatus according to claim 3, whereinn said means for rotating said chuck means operates at a uniform speed.

9. An apparatus according to claim 7, wherein said means for rotating said chuck means Operates at a uniform speed.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2637115 *Apr 3, 1950May 5, 1953Christensen Machine CoMagnetic calipering device
US3504148 *Sep 13, 1967Mar 31, 1970Boleslav Ivanovich MaximovichMethod and apparatus for producing bimetallic articles by inductive heating and positioning means
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4214139 *Mar 10, 1978Jul 22, 1980Budzan Bogdan PApparatus for surfacing internal combustion engines valves
US4292486 *Dec 18, 1979Sep 29, 1981Dudko Daniil AApparatus for delivery of melting rings and valves to an inductor heater
US5525780 *Aug 31, 1993Jun 11, 1996Texas Instruments IncorporatedMethod and apparatus for uniform semiconductor material processing using induction heating with a chuck member
Classifications
U.S. Classification118/676, 219/641, 279/128, 118/503, 118/69, 118/620, 269/8
International ClassificationC23C4/12, B05B13/02
Cooperative ClassificationB05B13/0278, C23C4/12
European ClassificationC23C4/12, B05B13/02H