US3580019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing rod, shaped and tubular products from difficult-to-work metals and alloys, preferably high melting-point and chemically active ones
Assignee: DMITRY KONSTANTINOVICH BULYCHE
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Filing: 1967-05-10
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Granted: 1971-05-25
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Expires: 1987-05-10
Abstract
Abstract A method of extruding materials that are difficult to extrude in which a blank of the material is enclosed in a container with a portion extending into an extrusion die and the blank is subjected to high pressure fluid to press the blank through the blank may be coated with a metal or metals such as nickel and copper, and a a lubricant applied thereto. The outer coating of a blank coated with plural layers of metal may be porous.
Inventors
- 👤 Boris Ivanovich Beresnev
- 👤 Evgeny Dmitrievich Martynov
- 👤 Jury Nikolaevich Ryabinin
- 👤 Mikhail Vasilievich Maltsev
- 👤 Georgy Pavlovich Britnev
- 👤 Anatoly Vasilievich Kocherov
- 👤 Dmitry Konstantinovic Bulychev
- 👤 Kuzma Petrovich Bodionov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:45
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/22; B21C23/007; Y; Y10; Y10S; Y10S72/00; Y10S72/70
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
28 words
The method according to claim 1, wherein, when manufacturing thin-walled tubular products, the blank is extruded through a die on a movable mandrel provided with a centering head.
Claim 2
Independent Claim
135 words
A method of manufacturing extruded products from difficult-to-work metals and alloys such as high melting-point and chemically active metals and alloys, comprising depositing a metal coating upon a blank of the material to be extruded in a plurality of layers, making the outermost layer porous, the layers being composed of nickel and copper that firmly adhere to each other and to the surface of the blank, positioning the thus treated blank in a container, and introducing a high-pressure fluid into the container to extrude the blank with the coating thereon througH a die operably related to the container, with the coating preventing the high-pressure fluid from entering the pores of the blank material and the outermost porous layer ensuring absorption of the high-pressure fluid for decreasing the frictional forces between the blank and the die.
Claim 3
Dependent Claim
31 words
The method according to claim 3, wherein, when manufacturing thin-walled tubular products, the extrusion of the blank through a die is effected on a movable mandrel provided with a centering head.
Claim 4
Independent Claim
144 words
A method of manufacturing extruded products from difficult-to-work materials such as high melting-point and chemically active metal, comprising depositing a metal coating upon a blank of the material to be extruded in a plurality of layers, making the outermost layer porous, the layers each being composed of a different metal that firmly adheres to the other metal and to the surface of the blank, depositing a pasty lubricant upon the metal coating, positioning the thus treated blank in a container, and introducing a high-pressure fluid which does not dissolve the lubricant into the container to extrude the thus treated blank through a die operably related to the container, with the coating preventing the high-pressure fluid from entering the pores of the blank material and the outermost porous layer ensuring adsorption of the fluid for decreasing the frictional forces between the blank and the die.
Claim 5
Dependent Claim
31 words
The method according to claim 5, wherein, when manufacturing thin-walled tubular products the extrusion of the blank through a die is effected on a movable mandrel provided with a centering head.
Claim 6
Independent Claim
125 words
A method of manufacturing extruded products from difficult-to-work and chemically active metals and alloys, preferably high melting-point and chemically active ones, comprising depositing a metal coating in a plurality of layers on a blank of the material to be extruded, making the outermost layer porous, applying a pasty lubricant onto the coating, positioning the thus treated blank in a container, and introducing a high-pressure fluid which does not dissolve the lubricant into the container to extrude the thus treated blank through a die operably related to the container, with the coating preventing the high-pressure fluid from entering the pores of the blank material and the outermost porous layer ensuring adsorption of the high-pressure fluid for decreasing the frictional forces between the blank and the die.
References Cited (Backward Citations)
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US2169444A
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GB751260A
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US3135623A
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US3344507A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |