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US3753288A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of providing metal slabs from a metal production facility

Assignee: Bethlehem Steel Corp
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Filing: 1971-12-28
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Granted: 1973-08-21
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Expires: 1991-12-28
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Abstract

Abstract Expeditious delivery of plates and slabs from a metal slab producing facility is obtained by teeming a series of ingots to substantially the same height from a molten steel supply, determining a number of already ordered tailored slabs which can be made from each respective ingot leaving over an amount of metal within a predetermined range sufficient to form a single usable stock slab from each ingot for inventory, rolling said tailored slabs into plates for immediate delivery and placing said stock slab in inventory either as a stock slab or stock plate for subsequent delivery on an order for such stock slab or plate.

Inventors

  • 👤 J Orbon

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 05:00
CPC Classifications
B; B21; B21B; B21B1/00; B21B1/02; B21B1/026; Y; Y10; Y10S; Y10S29/00; Y10S29/032; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49988; Y10T29/49991

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 276 words
A method of expeditiously providing plates from a production unit which includes pouring and rolling apparatus for pouring molten metal into ingot molds and subsequently rolling the ingots formed from solidification of the molten metal in the ingot molds into slabs and plates in which method the plates are rolled from slabs which are in turn rolled from ingots containing sufficient metal to make at least two slabs from each ingot according to the mass-volume principle comprising: a. filling a series of ingot molds with molten metal to substantially the same predetermined level relative to the ingot mold structure, b. allowing the metal in said ingot molds to solidify into metal ingots, c. rolling at least one special order slab from each ingot having predetermined dimensions such that based upon the massvolume principle there may additionally be rolled from the remaining metal left over from rolling said special order slabs a single stock slab having dimensions within a predetermined range of dimensions encompassing the slab sizes necessary to provide stock for rolling plates of the historically most requested dimensions in the production unit, d. rolling the metal left over from step (c) of rolling said special order slabs from each ingot, into a single stock slab from each ingot, e. rolling the said special order slabs produced in step (c) into special order plates for substantially immediate supply to the ordering customers, and f. storing the said single stock slab from each ingot in inventory for later retrieval for subsequent rolling of additional products requiring for their production an amount of metal substantially the same as the amount of metal contained in each respective stock slab.
Claim 2
Independent Claim 276 words
A method of expeditiously providing plates from a production unit which includes pouring and rolling apparatus for pouring molten metal into ingot molds and subsequently rolling the ingots formed from solidification of the molten metal in the ingot molds into slabs and plates in which method the plates are rolled from slabs which are in turn rolled from ingots containing sufficient metal to make at least two slabs from each ingot according to the mass-volume principle comprising: a. filling a series of ingot molds with molten metal to substantially the same predetermined level relative to the ingot mold structure, b. allowing the metal in said ingot molds to solidify into metal ingots, c. rolling at least one special order slab from each ingot having predetermined dimensions such that based upon the massvolume principle there may additionally be rolled from the remaining metal left over from rolling said special order slabs a single stock slab having dimensions within a predetermined range of dimensions encompassing the slab sizes necessary to provide stock for rolling plates of the historically most requested dimensions in the production unit, d. rolling the metal left over from step (c) of rolling said special order slabs from each ingot, into a single stock slab from each ingot, e. rolling the said special order slabs produced in step (c) into special order plates for substantially immediate supply to the ordering customers, and f. storing the said single stock slab from each ingot in inventory for later retrieval for subsequent rolling of additional products requiring for their production an amount of metal substantially the same as the amount of metal contained in each respective stock slab.
Claim 3
Dependent Claim 30 words
A method of providing plates from a production unit according to claim 1 wherein at least two special order slabs are rolled from substantially a majority of the ingots produced.
Claim 4
Dependent Claim 27 words
A method of providing plates from a production unit according to claim 2 wherein the single stock slabs from each ingot are substantially immediately rolled into plates.
Claim 5
Dependent Claim 70 words
A method of providing plates from a production unit according to claim 3 wherein the number of special order slabs of predetermined dimensions which can be rolled from each ingot leaving over a stock slab having dimensions within predetermined usable limits is determinable from a previous compilation of the number of tailored slabs of varying dimensions obtainable from ingots of varying dimensions with but a single stock slab left over.
Claim 6
Dependent Claim 42 words
A method of providing plates from a production unit according to claim 4 wherein the predetermined dimensions of the usable stock slabs is determined from a previous statistical compilation of the plates and slabs historically most frequently ordered from said production unit.
Claim 7
Dependent Claim 33 words
A method of providing plates from a production unit according to claim 1 wherein at least some of said stock slabs are rolled into stock plates before at least brief storage in inventory.

References Cited (Backward Citations)

US3146525A Cited
US3249996A Cited
US3191292A Cited
US3580032A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-08-20 1977-02-19 1977-08-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-08-20 1981-02-19 1981-08-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-08-20 1985-02-19 1985-08-21 $7700.00 Window Closed / Lapsed

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