US4402767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabrication of alloys
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1982-12-27
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Granted: 1983-09-06
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Expires: 2002-12-27
Abstract
Abstract A process for producing an article of glass manufacture is disclosed in which oxide dispersion strengthened alloys are used to produce complicated shapes. The process includes a critical thermomechanical processing sequence to recrystallize the alloy into a coarse grain structure for high temperature service.
Inventors
- 👤 Jay W. Hinze
- 👤 Mark L. Robinson
- 👤 Richard D. Lawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:37
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/04; C03B37/047; C03B37/08; C03B37/0805; C21; C21D; C21D8/00; C22; C22F; C22F1/00; C22F1/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
58 words
A process for producing an article of manufacture for glass making from a mechanically alloyed or oxide dispersion strengthened alloy including the steps of: warm working the alloy at temperatures below its recrystallization temperature; annealing the warm worked article to recrystallize the alloy to a coarse grain structure; and hot forming the article of manufacture for glass making.
Claim 2
Dependent Claim
58 words
A process for producing an article of manufacture for glass making from a mechanically alloyed or oxide dispersion strengthened alloy including the steps of: warm working the alloy at temperatures below its recrystallization temperature; annealing the warm worked article to recrystallize the alloy to a coarse grain structure; and hot forming the article of manufacture for glass making.
Claim 3
Dependent Claim
61 words
A process for producing an article of manufacture for glass making from a mechanically alloyed or oxide dispersion strengthened alloy including the steps of: warm working the alloy at temperatures below which substantial recrystallization occurs; hot forming the article of manufacture for glass making; and annealing the hot formed article to effect recrystallization of the alloy to a coarse grain structure.
Claim 4
Dependent Claim
61 words
A process for producing an article of manufacture for glass making from a mechanically alloyed or oxide dispersion strengthened alloy including the steps of: warm working the alloy at temperatures below which substantial recrystallization occurs; hot forming the article of manufacture for glass making; and annealing the hot formed article to effect recrystallization of the alloy to a coarse grain structure.
Claim 5
Dependent Claim
25 words
A process according to claims 1 or 2 wherein the annealing is carried out at temperatures above which substantial secondary recrystallization or grain growth occurs.
Claim 6
Dependent Claim
69 words
A process for producing spinners for forming glass fibers from a mechanically alloyed or oxide dispersion strengthened alloy including the steps of: warm working the bar stock of the alloy at temperatures below which substantial recrystallization occurs to form a plate; annealing the warm worked plate above this temperature to effect recrystallization to a coarse grain structure; and hot spinning the annealed plate to the shape of a spinner.
Claim 7
Dependent Claim
69 words
A process for producing spinners for forming glass fibers from a mechanically alloyed or oxide dispersion strengthened alloy including the steps of: warm working the bar stock of the alloy at temperatures below which substantial recrystallization occurs to form a plate; annealing the warm worked plate above this temperature to effect recrystallization to a coarse grain structure; and hot spinning the annealed plate to the shape of a spinner.
Claim 8
Dependent Claim
21 words
A process according to claim 4 including the additional step of heat treating the spinner to develop a desired grain structure.
Claim 9
Dependent Claim
67 words
A process for producing spinners for forming glass fibers from a mechanically alloyed or oxide dispersion strengthened alloy including the steps of: warm working bar stock of the alloy at temperatures below which substantial recrystallization occurs to form a plate; hot spinning the warm worked plate to the shape of a spinner; and annealing the spinner above the alloy's recrystallization temperature to effect a coarse grain structure.
Claim 10
Dependent Claim
67 words
A process for producing spinners for forming glass fibers from a mechanically alloyed or oxide dispersion strengthened alloy including the steps of: warm working bar stock of the alloy at temperatures below which substantial recrystallization occurs to form a plate; hot spinning the warm worked plate to the shape of a spinner; and annealing the spinner above the alloy's recrystallization temperature to effect a coarse grain structure.
Claim 11
Dependent Claim
20 words
A process according to claim 4 or 6 wherein the alloy is an iron or nickel-based oxide dispersion strengthened alloy.
Claim 12
Dependent Claim
31 words
A process according to claim 4 or 6 wherein the step of hot spinning is carried out at a temperature ranging from about 538° to 1205° C. (1000° to 2200° F.).
Claim 13
Dependent Claim
31 words
A process according to claim 4 or 6 wherein the step of hot spinning is carried out at a temperature ranging from about 649° to 760° C. (1200° to 1400° F.).
Claim 14
Dependent Claim
31 words
A process according to claim 4 or 6 wherein the step of hot spinning is carried out at a temperature ranging from about 927° to 1038° C. (1700° to 1900° F.).
Claim 15
Dependent Claim
26 words
A process according to claim 4 or 6 wherein the step of annealing is carried out at a temperature below the melting point of the alloy.
Claim 16
Dependent Claim
37 words
A process according to claim 11 wherein the step of annealing is carried out at a temperature ranging from about 1093° to 1649° C. (2000° to 3000° F.) for a time ranging from 1 to 8 hours.
Claim 17
Dependent Claim
38 words
A process according to claim 11 wherein the step of annealing is carried out at a temperature ranging from about 1260° to 1482° C. (2300° to 2700° F.) for a time ranging from about 1 to 6 hours.
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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) | 1986-09-05 | 1987-03-07 | 1987-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-05 | 1991-03-07 | 1991-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-05 | 1995-03-07 | 1995-09-06 | $7700.00 | Window Closed / Lapsed |