Patent US5164097A successfully refreshed from Google Patents.
US5164097A
Expired / Lapsed
US
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Nozzle assembly design for a continuous alloy production process and method for making said nozzle
Assignee: General Electric Co
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Filing: 1991-02-01
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Granted: 1992-11-17
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Expires: 2011-02-01
Abstract
Abstract A nozzle assembly design and a method for making the nozzle assembly, as well as a method for controlling a continuous skull nozzle process employing the nozzle assembly are provided wherein the cooling heat transfer coefficient at the nozzle is increased to maintain a steady-state solidified layer of a noncontaminating liner material, the cooling heat transfer coefficient being increased by reducing the contact resistance between a nozzle outer wall member and an inner liner made of the noncontaminating material, the reduction in contact resistance being achieved by shrink-fitting the nozzle outer wall member around the inner liner to increase the contact pressure between those members.
Inventors
- 👤 Hsin-Pang Wang
- 👤 Erin M. Perry
- 👤 Yuan Pang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:40
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/50; B22D41/52; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/082; B22F2009/0848; B22F2009/0856; B22F2009/0892
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
126 words
A method for constructing a discharge nozzle to be used in a skull melting process comprising: heating a copper outer wall member of said nozzle to a temperature sufficient to thermally expand said outer wall member; inserting a titanium or titanium alloy inner liner into an opening defined by an inner surface of said outer wall member, an outer surface of said inner liner having a greater peripheral dimension than a corresponding dimension of said opening when said outer wall is in an unexpanded condition, said inner liner being made of a material which is compatible with a molten material to be discharged through said nozzle; and cooling said outer wall member to cause said outer wall member to contract into contact with said inner liner.
Claim 2
Independent Claim
126 words
A method for constructing a discharge nozzle to be used in a skull melting process comprising: heating a copper outer wall member of said nozzle to a temperature sufficient to thermally expand said outer wall member; inserting a titanium or titanium alloy inner liner into an opening defined by an inner surface of said outer wall member, an outer surface of said inner liner having a greater peripheral dimension than a corresponding dimension of said opening when said outer wall is in an unexpanded condition, said inner liner being made of a material which is compatible with a molten material to be discharged through said nozzle; and cooling said outer wall member to cause said outer wall member to contract into contact with said inner liner.
Claim 3
Dependent Claim
34 words
A method as recited in claim 1 wherein a shape of said outer surface of said inner linear corresponds substantially in geometry to a shape of said inner surface of said outer wall member.
Claim 4
Dependent Claim
21 words
A method as recited in claim 2 wherein said outer wall member and said inner liner are substantially annular in shape.
Claim 5
Dependent Claim
17 words
A method as recited in claim 3 wherein said outer wall member has cooling channels extending therethrough.
Claim 6
Independent Claim
23 words
A method as recited in claim comprising the further step of attaching said outer wall member carrying said inner liner to a crucible.
Claim 7
Dependent Claim
28 words
A method as recited in claim 1 wherein said outer wall member is radially expanded to a size which is approximately 1% larger than an initial unexpanded size.
Claim 8
Dependent Claim
33 words
A method as recited in claim 1 wherein a contact pressure produced by said outer wall member contracting into contact with said inner liner is greater than about 10 pounds per square inch.
Claim 9
Dependent Claim
35 words
A method as recited in claim 1 wherein at least said cooling step is conducted in a helium gas environment to further improve the heat transfer between said inner linear and said outer wall member.
Claim 10
Dependent Claim
34 words
A method as recited in claim 8 wherein a shape of said outer surface of said inner liner corresponds substantially in geometry to a shape of said inner surface of said outer wall member.
Claim 11
Dependent Claim
21 words
A method as recited in claim 9 wherein said outer wall member and said inner liner are substantially annular in shape.
References Cited (Backward Citations)
US3435992A
Cited
US4345467A
Cited
US4583717A
Cited
US4654858A
Cited
US4951929A
Cited
US5060914A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-17 | 1996-05-18 | 1996-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-17 | 2000-05-18 | 2000-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-17 | 2004-05-18 | 2004-11-17 | $7700.00 | Window Closed / Lapsed |