Patent US4262734A successfully refreshed from Google Patents.
US4262734A
Expired / Lapsed
US
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Apparatus for melt puddle control and quench rate improvement in melt-spinning of metallic ribbons
Assignee: General Electric Co
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Filing: 1979-09-17
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Granted: 1981-04-21
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Expires: 1999-09-17
Abstract
Abstract A bearing gas sleeve coaxial with the melt ejection crucible is provided in an apparatus for making glassy alloy ribbons to provide a confluent bearing gas flow which minimizes dynamic fluctuations in the molten alloy puddle from which metallic ribbon is formed during chill block melt-spinning. The bearing gas flow causes an improved quench rate and melt puddle stabilization which results in reduced upper ribbon surface texture and improved edge definition.
Inventors
- 👤 Howard H. Liebermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:53
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/005; B22D11/06; B22D11/0611; B22D11/0637; B22D11/0697
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
136 words
An improvement in apparatus for making metallic alloy ribbon comprising a melt ejection crucible including a reservoir for molten alloy meterial to be cast and a nozzle for casting the melt, and first gas inlet means for pressurizing the reservoir to eject said melt onto a moving substrate surface, the improvement comprising a confluent bearing gas sleeve encompassing at least the lower portion of, and coaxially aligned with, said melt ejection crucible, a second gas inlet means for supplying a confluent bearing gas to said confluent bearing gas sleeve, and an outlet orifice in said confluent bearing gas sleeve for directing the flowing bearing gas as a gas stream about a molten alloy stream, the melt puddle formed on said moving substrate surface, and the edge surfaces of the metallic alloy ribbon formed from said puddle.
Claim 2
Dependent Claim
136 words
An improvement in apparatus for making metallic alloy ribbon comprising a melt ejection crucible including a reservoir for molten alloy meterial to be cast and a nozzle for casting the melt, and first gas inlet means for pressurizing the reservoir to eject said melt onto a moving substrate surface, the improvement comprising a confluent bearing gas sleeve encompassing at least the lower portion of, and coaxially aligned with, said melt ejection crucible, a second gas inlet means for supplying a confluent bearing gas to said confluent bearing gas sleeve, and an outlet orifice in said confluent bearing gas sleeve for directing the flowing bearing gas as a gas stream about a molten alloy stream, the melt puddle formed on said moving substrate surface, and the edge surfaces of the metallic alloy ribbon formed from said puddle.
Claim 3
Dependent Claim
32 words
The apparatus of claim 1 wherein said nozzle of said melt ejection crucible is located more distant from said moving substrate surface than said outlet orifice of said confluent bearing gas sleeve.
Claim 4
Dependent Claim
32 words
The apparatus of claim 2 wherein the distance from the moving substrate surface to the outlet orifice of said sleeve is designated as δ and is in the range 1 mm≦δ≦4 mm.
Claim 5
Dependent Claim
87 words
The apparatus of claim 1 and further including bias gas means connected between the first and second gas inlet means for bleeding a portion of said confluent gas to bear on, and stabilize the height of, the reservoir of molten alloy material, first valve means for controlling the flow of gas in said first inlet gas means, second valve means for controlling the flow of gas in said second inlet gas means, and third valve means for controlling the flow of gas in said bias gas means.
Claim 6
Dependent Claim
32 words
The apparatus of claim 4 wherein said nozzle of said melt ejection crucible is located more distant from said moving substrate surface than said outlet orifice of said confluent bearing gas sleeve.
Claim 7
Dependent Claim
32 words
The apparatus of claim 5 wherein the distance from the moving substrate surface to the outlet orifice of said sleeve is designated as δ and is in the range 1 mm≦δ≦4 mm.
Claim 8
Dependent Claim
34 words
The apparatus of claim 1 wherein said moving substrate surface is located on the circumferential edge area interconnecting opposed major surfaces of a wheel, said wheel being mounted for rotation about a horizontal axis.
Claim 9
Dependent Claim
46 words
The apparatus of claim 1 wherein said moving substrate surface is the top surface of a wheel, said wheel having opposed top and bottom major surfaces and a circumferential edge area interconnecting said major surfaces, said wheel being mounted for rotation about a substantially vertical axis.
Claim 10
Dependent Claim
34 words
The apparatus of claim 4 wherein said moving substrate surface is located on the circumferential edge area interconnecting opposed major surfaces of a wheel, said wheel being mounted for rotation about a horizontal axis.
Claim 11
Dependent Claim
46 words
The apparatus of claim 4 wherein said moving substrate surface is the top surface of a wheel, said wheel having opposed top and bottom major surfaces and a circumferential edge area interconnecting said major surfaces, said wheel being mounted for rotation about a substantially vertical axis.
References Cited (Backward Citations)
US4144926A
Cited
US4177856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-20 | 1984-10-20 | 1985-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-20 | 1988-10-20 | 1989-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-20 | 1992-10-20 | 1993-04-21 | $7700.00 | Window Closed / Lapsed |