Patent US4121647A successfully refreshed from Google Patents.
US4121647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a multilayer metal ingot by the electro-beam remelting of billets
Assignee: Individual
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Filing: 1976-05-14
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Granted: 1978-10-24
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Expires: 1996-05-14
Abstract
Abstract A method of producing a multilayer ingot in an electron-beam installation, with the billet arranged in a base plate above the bottom thereof, and the base plate is reciprocated in a horizontal direction as said billet is being melted and the first layer of said ingot is being shaped. Another metal billet is melted above an intermediate vessel, with the molten metal being poured thereoff onto said first layer of the ingot in the base plate forming thereby a second layer on the first formed layer and additional layers of a multilayer ingot are shaped in a similar manner. The reciprocation speed of the base plate is inversely proportional to the cooling rate of the ingot metal in a longitudinal direction. The method of the invention ensures producing ingots with a smooth surface which does not require and preprocessing prior to rolling.
Inventors
- 👤 Boris Evgenievich Paton
- 👤 Boris Alexeevich Movchan
- 👤 Jury Anatolievich Kurapov
- 👤 Rostislav Spiridonovich Misjura
- 👤 Igor Stepanovich Pryanishnikov
- 👤 Vladimir Nikiforovich Zhuchin
- 👤 Valentin Vasilievich Topilin
- 👤 Igor Vasilievich Perepelitsa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:55
CPC Classifications
B; B22; B22D; B22D7/00; B22D7/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
192 words
A method of producing a multilayer ingot in an electron beam-installation, comprising the steps of remelting a first metal billet, positioned directly in a base plate, by means of electron-beams for producing a first layer of said multilayer ingot, said billet being arranged with a clearance with respect to the bottom of said base plate; reciprocating said base plate as said billet is being melted and collected therein so as to form said first layer of said ingot; electron-beam remelting another metal billet above an intermediate vessel disposed above said reciprocating base plate and pouring accumulated molten metal thereoff into said base plate so as to form and shape one or more additional layers of said multi-layer ingot therein, and reciprocating said base plate in a horizontal direction with respect to said intermediate vessel at a speed that is inversely proportional to the cooling rate of the ingot metal in a longitudinal direction, whereby the surface quality is improved, the thickness of said layers along the length of said ingot are uniform, and distortion of said layers is avoided, thereby precluding the need for additional processing of said ingot prior to rolling.
Claim 2
Independent Claim
192 words
A method of producing a multilayer ingot in an electron beam-installation, comprising the steps of remelting a first metal billet, positioned directly in a base plate, by means of electron-beams for producing a first layer of said multilayer ingot, said billet being arranged with a clearance with respect to the bottom of said base plate; reciprocating said base plate as said billet is being melted and collected therein so as to form said first layer of said ingot; electron-beam remelting another metal billet above an intermediate vessel disposed above said reciprocating base plate and pouring accumulated molten metal thereoff into said base plate so as to form and shape one or more additional layers of said multi-layer ingot therein, and reciprocating said base plate in a horizontal direction with respect to said intermediate vessel at a speed that is inversely proportional to the cooling rate of the ingot metal in a longitudinal direction, whereby the surface quality is improved, the thickness of said layers along the length of said ingot are uniform, and distortion of said layers is avoided, thereby precluding the need for additional processing of said ingot prior to rolling.
Claim 3
Dependent Claim
12 words
The method of claim 1, wherein said layers form a bimetallic ingot.
Claim 4
Dependent Claim
25 words
The method of claim 1, wherein the thickness of each of said layers is approximately the same over the entire area of said multilayer ingot.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |