US574781A - John p - Google Patents
John p Download PDFInfo
- Publication number
- US574781A US574781A US574781DA US574781A US 574781 A US574781 A US 574781A US 574781D A US574781D A US 574781DA US 574781 A US574781 A US 574781A
- Authority
- US
- United States
- Prior art keywords
- sheets
- bars
- impurities
- john
- sheet
- 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
Links
- 239000012535 impurity Substances 0.000 description 14
- 239000003818 cinder Substances 0.000 description 10
- 238000005096 rolling process Methods 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000005554 pickling Methods 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
Definitions
- the sheet-bars are heated to a very high temperature, broken down, and rolled to the desired gage. The sheets are then pickled, washed and cold-rolled, if a finished sheet is desired.
- the sheet-bars are heated to a much higher temperature than is required for rolling, for the reason that cinder and other impurities become embedded in the bars during their manufacture and it is desired to produce a heavy oXid scale which will surround and adhere to the cinder and other impurities and in flaking ofi during the rolling operation will carry the impurities with it.
- This method is very expensive on account of the loss of metal by excessive oxidation, and is only partially efiective, as it will not remove the deeply-seated impurities, which become further embedded during the breaking down and rolling of the bars to sheets, and cannot be removed by the pickling of the sheets, thereby rendering the sheets unfit as first-class material.
- the object of the present invention is to provide for the rem oval of the cinder and im purities from the sheet-bars prior to heating for breaking down, and in general terms the invention consists in the method hereinafter more fully described and claimed.
- the sheetbars are produced in the usual or any suit able manner.
- the bars are then placed in an acid-bath of sufficient strength to act upon and remove the cinder and other impurities,
- the bars are next washed to remove and neutralize the acid and placed in a heatingfurnace, where they are heated not above a good rolling temperature, as the formation of an oxid scale or coating is not necessary or desirable.
- a gage such that subsequent treatment will produce the finished gage, they are pickled, washed, and cold-rolled in the usual manner.
- I claim herein as my invention As an improvement in the art of manufacturin g iron or steel sheets, the method herein described,which consists in pickling the sheetbars for the purpose of removing cinders or other impurities from the surface thereof, washing the bars, heating them to a good rolling-temperature, reducing them by rolling to approximately the finished gage, pickling and washing the sheets, and finally reducing them to the finished gage, substantially as set forth.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
UNITED STATES PATENT OFFICE.
JOHN F. BUDKE, OF CANNONSBURG, PENNSYLVANIA, ASSIGNOR TO THE CANONSBURG IRON AND STEEL COMPANY, OF SAME PLACE.
MANUFACTURE OF SHEET METAL.
SPECIFIOATION forming part of Letters Patent No. 574,781, dated January 5, 1897.
Application filed February 26, 1 8 9 5.
1'0 all whom it may concern.-
Be it known that I, JOHN F. BUDKE, a citizen of the United States, residing at Cannonsburg, in the county of Washington and State of Pennsylvania, have invented or discovered certain new and useful Improvements in the Manufacture of Sheet Metal, of which improvements the following is a specification.
In the present practice of making metal sheets the sheet-bars are heated to a very high temperature, broken down, and rolled to the desired gage. The sheets are then pickled, washed and cold-rolled, if a finished sheet is desired. The sheet-bars are heated to a much higher temperature than is required for rolling, for the reason that cinder and other impurities become embedded in the bars during their manufacture and it is desired to produce a heavy oXid scale which will surround and adhere to the cinder and other impurities and in flaking ofi during the rolling operation will carry the impurities with it. This method is very expensive on account of the loss of metal by excessive oxidation, and is only partially efiective, as it will not remove the deeply-seated impurities, which become further embedded during the breaking down and rolling of the bars to sheets, and cannot be removed by the pickling of the sheets, thereby rendering the sheets unfit as first-class material.
The object of the present invention is to provide for the rem oval of the cinder and im purities from the sheet-bars prior to heating for breaking down, and in general terms the invention consists in the method hereinafter more fully described and claimed.
In the practice of my invention the sheetbars are produced in the usual or any suit able manner. The bars are then placed in an acid-bath of sufficient strength to act upon and remove the cinder and other impurities,
Serial No. 539,768. (No specimens.)
leaving the bars clean and in good condition. The bars are next washed to remove and neutralize the acid and placed in a heatingfurnace, where they are heated not above a good rolling temperature, as the formation of an oxid scale or coating is not necessary or desirable. After the sheets have been reduced to the desired gage, "i. 6., a gage such that subsequent treatment will produce the finished gage, they are pickled, washed, and cold-rolled in the usual manner.
I have found that acid which has become useless for cleaning the sheets is well adapted for cleaning the sheet-bars, so that the additional step adds very little to the cost of production of the sheets, and this added cost is more than compensated for in the saving resulting from the lower heating of the bars and the reduced percentage in defective sheets.
I have found in the practice of my invention that a loss of sheets due to impurities embedded in the surface of the same is practically avoided, and that the sheets come from the rolls with smooth surfaces of uniform color.
I claim herein as my invention As an improvement in the art of manufacturin g iron or steel sheets, the method herein described,which consists in pickling the sheetbars for the purpose of removing cinders or other impurities from the surface thereof, washing the bars, heating them to a good rolling-temperature, reducing them by rolling to approximately the finished gage, pickling and washing the sheets, and finally reducing them to the finished gage, substantially as set forth.
In testimony whereof I have hereunto set my hand.
JOHN F. BUDKE. Witnesses:
DARWIN S. WoLoorT, F. E. GAITHER.
Publications (1)
Publication Number | Publication Date |
---|---|
US574781A true US574781A (en) | 1897-01-05 |
Family
ID=2643474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US574781D Expired - Lifetime US574781A (en) | John p |
Country Status (1)
Country | Link |
---|---|
US (1) | US574781A (en) |
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0
- US US574781D patent/US574781A/en not_active Expired - Lifetime
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