US4151896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing machine wire by continuous casting and rolling
Assignee: Rio Tinto France SAS
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Filing: 1978-01-19
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Granted: 1979-05-01
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Expires: 1998-01-19
Abstract
Abstract A method and apparatus for casting and rolling and heat treatment for aluminum alloys with structural hardening, which are continuously cast and rolled to produce machine wire, comprising, carrying out a first rolling operation at a reduction rate of 20 to 85% on discharge from the casting machine, continuously reheating the already rolled blank to bring it to a temperature between 450° and 550° C., then carrying out final hot rolling to the definitive section of the machine wire. The method applies particularly to the production of wire made of aluminum alloy Al-Mg-Si for the manufacture of electrical conductors.
Inventors
- 👤 Jean C. Nicoud
- 👤 Paul Faivre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:16
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/04; C22F1/05; B; B21; B21B; B21B3/00; B21B3/003
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
161 words
A method of continuous casting, heat treatment and rolling of aluminum alloys with structural hardening for producing machine wire, having improved elongation comprising casting a continuous blank from molten alloy on a casting wheel, subjecting the emerging continuous blank to the following steps in sequence; (a) a first hot rolling at a feed temperature of above 440° C. to cause the initial section of the blank (So) to change to a section (S) so that (So -S/So) is from 20 to 85%, (b) increasing the temperature of the blank emerging from the first hot rolling by from 30° to 150° C., enabling it to be brought to a temperature of between 450° to 550° C., and hold for about 5 seconds and thus causing the hardening elements of the alloy to go into solution and recrystallize, (c) passing the blank through a second hot rolling to further reduce the section (S) of the blank to a final section (S F ).
Claim 2
Independent Claim
161 words
A method of continuous casting, heat treatment and rolling of aluminum alloys with structural hardening for producing machine wire, having improved elongation comprising casting a continuous blank from molten alloy on a casting wheel, subjecting the emerging continuous blank to the following steps in sequence; (a) a first hot rolling at a feed temperature of above 440° C. to cause the initial section of the blank (So) to change to a section (S) so that (So -S/So) is from 20 to 85%, (b) increasing the temperature of the blank emerging from the first hot rolling by from 30° to 150° C., enabling it to be brought to a temperature of between 450° to 550° C., and hold for about 5 seconds and thus causing the hardening elements of the alloy to go into solution and recrystallize, (c) passing the blank through a second hot rolling to further reduce the section (S) of the blank to a final section (S F ).
Claim 3
Dependent Claim
22 words
A method as defined in claim 1 and further including the step of continuous quenching subsequent to the second hot rolling step.
Claim 4
Dependent Claim
44 words
A method as defined in claim 1 wherein the aluminum alloy is an aluminum-magnesium-silicon alloy containing as its chief elements, apart from aluminum, from 0.15 to 0.30% iron, from 0.30 to 0.80% magnesium, from 0.30 to 0.70% silicon and no more than 0.2% copper.
Claim 5
Dependent Claim
20 words
A method as defined in claim 2 and further including the step of winding the quenched wire on a reel.
Claim 6
Dependent Claim
18 words
A method as defined in claim 1 wherein said temperature is increased to between 480° and 530° C.
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) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |