US941861A - Manufacture of plates and sheets. - Google Patents

Manufacture of plates and sheets. Download PDF

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Publication number
US941861A
US941861A US48343809A US1909483438A US941861A US 941861 A US941861 A US 941861A US 48343809 A US48343809 A US 48343809A US 1909483438 A US1909483438 A US 1909483438A US 941861 A US941861 A US 941861A
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US
United States
Prior art keywords
sheets
plates
manufacture
annealing
steam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US48343809A
Inventor
Stewart A Davis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
American Sheet and Tin Plate Co
Original Assignee
American Sheet and Tin Plate Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Sheet and Tin Plate Co filed Critical American Sheet and Tin Plate Co
Priority to US48343809A priority Critical patent/US941861A/en
Application granted granted Critical
Publication of US941861A publication Critical patent/US941861A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/10—Oxidising
    • C23C8/16—Oxidising using oxygen-containing compounds, e.g. water, carbon dioxide
    • C23C8/18—Oxidising of ferrous surfaces

Definitions

  • My invention relates to the manufacture of metal plates and sheets and more particularly to a novel method of finishing the same to obtain a highly polished blued surface. 7
  • the object of my invention is to simplify the methods heretofore in use by reducing the number of steps necessary to produce the desired finish, thereby materially reducing the time, labor and cost of the 0 eration and increasing the output of the mil
  • a further object is to provide a method of this character by which a su erior uniform finish is given the sheets an plates.
  • the plates and sheets have been hot-rolled in the usual manner, they are placed in an annealing box and brought up to an annealing temperature.
  • the box is then removed from the furnace and steam is introduced therein to cause oxidation of the surfaces of the plates while they are cooling, and producing what is known as a steam blued finish.
  • the cooled plates are then given one or more roll passes, preferably two. They are then again annealed, after which they are allowed to partially cool in the annealing box out oi? contact with the atmosphere.

Description

W UNITED STATES PATENT OFFICE.
STEWART A. DAVIS, OF PITTSBURG, PENNSYLVANIA, ASSIGNOB 'I'O AMERICAN SHEET & TIN PLATE COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION 0F NEW Patented Nov. 30, 1909.
JERSEY.
MANUFACTURE OF PLATES AND SHEETS.
941,861,, Specification of Letters Patent. No Drawing. Application filed larch 15, 1909. Serial No. 488,488.
To all whom it may concern:
Be it known that I, STEWART A. DAVIS, of Pittsburg, in the count of Allegheny and State of Pennsylvania, ave invented a new and useful Improvement in the Manufacture of Plates and Sheets, of which the following is a full, clear, and exact description.
My invention relates to the manufacture of metal plates and sheets and more particularly to a novel method of finishing the same to obtain a highly polished blued surface. 7
The object of my invention is to simplify the methods heretofore in use by reducing the number of steps necessary to produce the desired finish, thereby materially reducing the time, labor and cost of the 0 eration and increasing the output of the mil A further object is to provide a method of this character by which a su erior uniform finish is given the sheets an plates.
In the practice of my invention, after the plates and sheets have been hot-rolled in the usual manner, they are placed in an annealing box and brought up to an annealing temperature. The box is then removed from the furnace and steam is introduced therein to cause oxidation of the surfaces of the plates while they are cooling, and producing what is known as a steam blued finish. The cooled plates are then given one or more roll passes, preferably two. They are then again annealed, after which they are allowed to partially cool in the annealing box out oi? contact with the atmosphere.
They are then removed from the box in a partially cool state and are given one or more finishing roll passes, preferably at a temperature of about 350 F. to 1000 F. I claim:
1. The herein described method of treating metal plates or sheets, which consists in annealin them, and submitting them to the action 0 steam while they are cooling, then cold rolling them, then again annealing, and then roll finishing, substantially as described.
2. The herein described method of treating metal plates or sheets, which consists in annealing them and submitting them to the action of steam while they are cooling, then cold rollin them, then again annealing, and finally rolling them before they have cooled, substantially as described.
3. The herein described method of treating metal plates or sheets, which consists in annealing them, then submitting them while cooling to an oxidizin atmosphere containing steam, then cold ro ling them, then again annealin and allowing them to partially cool in t e annealing box, and finally rollfinishing the partially cooled plates or sheets, substantially as described.
In testimony whereof, I have hereunto set my hand.
S. A. DAVE S.
Witnesses CLAIR KELLY, G. C. KIMBALL.
US48343809A 1909-03-15 1909-03-15 Manufacture of plates and sheets. Expired - Lifetime US941861A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US48343809A US941861A (en) 1909-03-15 1909-03-15 Manufacture of plates and sheets.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US48343809A US941861A (en) 1909-03-15 1909-03-15 Manufacture of plates and sheets.

Publications (1)

Publication Number Publication Date
US941861A true US941861A (en) 1909-11-30

Family

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Family Applications (1)

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US48343809A Expired - Lifetime US941861A (en) 1909-03-15 1909-03-15 Manufacture of plates and sheets.

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