Patent US4212451A successfully refreshed from Google Patents.
US4212451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installation for the production of continuously cast billets
Assignee: Rio Tinto Switzerland AG
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Filing: 1978-04-05
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Granted: 1980-07-15
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Expires: 1998-04-05
Abstract
Abstract A process and installation for carrying out the process are disclosed wherein aluminium or magnesium alloys are continuously cast as extrusion billets with a high degree of automation. The billets are continuously cast, cut into lengths while warm and subjected to continuous or semi-continuous treatment. The installation allows for considerable savings in handling between stages, requires less space than conventional installations and allows for high consistency in product quality.
Inventors
- 👤 Hansjong Klotzbucher
- 👤 Erwin Kolb
- 👤 Bernhard Hilge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:58
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/14
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
175 words
An installation, for use in producing continuously cast billets, of alloys of aluminum or magnesium, comprising, in combination, a horizontal continuous casting machine operable for casting the billets, a horizontal conveyor connected up to said casting machine for receiving the cast billets from said machine while warm, a movable cutting device operable to move synchronously with said conveyor for cutting the billets as they are transported while warm by said conveyor, a heat treating unit disposed adjacent said conveyor and being operable to receive said cut warm billets from the conveyor and to heat treat them thereafter, a reserve magazine provided between said heat treating unit and the end of the conveyor track remote from the casting machine, a cooling unit adjacent and downstream of said heat treating unit for receiving the heat treated billets for controlled cooling thereof, a cutting device adjacent and downstream of said cooling unit for cutting the heat treated billets to the desired final length, and providing at the end of the production line an automatic stacking and packing device.
Claim 2
Dependent Claim
175 words
An installation, for use in producing continuously cast billets, of alloys of aluminum or magnesium, comprising, in combination, a horizontal continuous casting machine operable for casting the billets, a horizontal conveyor connected up to said casting machine for receiving the cast billets from said machine while warm, a movable cutting device operable to move synchronously with said conveyor for cutting the billets as they are transported while warm by said conveyor, a heat treating unit disposed adjacent said conveyor and being operable to receive said cut warm billets from the conveyor and to heat treat them thereafter, a reserve magazine provided between said heat treating unit and the end of the conveyor track remote from the casting machine, a cooling unit adjacent and downstream of said heat treating unit for receiving the heat treated billets for controlled cooling thereof, a cutting device adjacent and downstream of said cooling unit for cutting the heat treated billets to the desired final length, and providing at the end of the production line an automatic stacking and packing device.
Claim 3
Dependent Claim
147 words
An installation, for use in producing continuously cast billets, of alloys of aluminum or magnesium, comprising, in combination, a horizontal continuous casting machine operable for casting the billets, a horizontal conveyor connected up to said casting machine for receiving the cast billets from said machine while warm, a movable cutting device operable to move synchronously with said conveyor for cutting the billets as they are transported while warm by said conveyor, a heat treating unit disposed adjacent said conveyor and being operable to receive said cut warm billets from the conveyor and to heat treat them thereafter, a reserve magazine provided between said heat treating unit and the end of the conveyor track remote from the casting machine, and a stacking and packing unit downstream of said heat treating unit operable to receive said billets off the end of the production line and stack and pack them.
Claim 4
Dependent Claim
147 words
An installation, for use in producing continuously cast billets, of alloys of aluminum or magnesium, comprising, in combination, a horizontal continuous casting machine operable for casting the billets, a horizontal conveyor connected up to said casting machine for receiving the cast billets from said machine while warm, a movable cutting device operable to move synchronously with said conveyor for cutting the billets as they are transported while warm by said conveyor, a heat treating unit disposed adjacent said conveyor and being operable to receive said cut warm billets from the conveyor and to heat treat them thereafter, a reserve magazine provided between said heat treating unit and the end of the conveyor track remote from the casting machine, and a stacking and packing unit downstream of said heat treating unit operable to receive said billets off the end of the production line and stack and pack them.
Claim 5
Dependent Claim
15 words
An installation according to claim 2, in which the cutting device is a flying saw.
Claim 6
Dependent Claim
23 words
An installation according to claim 2, in which a device is provided for the continuous feed of molten metal to the casting machine.
Claim 7
Dependent Claim
23 words
An installation according to claim 2, in which the heat treatment unit comprises at least one pre-heating furnace and a separate holding furnace.
Claim 8
Dependent Claim
44 words
An installation according to claim 5, in which the pre-heating furnace includes a billet conveyance facility which can be driven intermittently or continuously though the movement can be interrupted, and the holding furnace includes an independent billet conveyance facility which can be operated continuously.
Claim 9
Dependent Claim
45 words
An installation according to claims 5, or 6, in which there is provided a conveyance device for transporting the billets from said conveyor track or from said adjacent reserve magazine to the pre-heating furnace and in addition from the pre-heating furnace to the holding furnace.
Claim 10
Dependent Claim
45 words
An installation according to claim 2, in which the heat treating unit comprises a furnace which can be operated in a continuous manner and having a pre-heating zone and a soaking zone and a conveyance facility for transporting the billets through both of these zones.
Claim 11
Dependent Claim
27 words
An installation according to claim 2, in which a cooling unit for the controlled cooling of the billets is provided in line after the heat treating unit.
Claim 12
Dependent Claim
29 words
An installation according to claim 2, in which a cutting device for cutting the billets to the desired final length is provided in line after the heat treating unit.
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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) | 1983-07-15 | 1984-01-14 | 1984-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-15 | 1988-01-14 | 1988-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-15 | 1992-01-14 | 1992-07-15 | $7700.00 | Window Closed / Lapsed |