US2004422A - Process for scaling tubes - Google Patents

Process for scaling tubes Download PDF

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Publication number
US2004422A
US2004422A US699147A US69914733A US2004422A US 2004422 A US2004422 A US 2004422A US 699147 A US699147 A US 699147A US 69914733 A US69914733 A US 69914733A US 2004422 A US2004422 A US 2004422A
Authority
US
United States
Prior art keywords
tube
rollers
valve
dimensioning
scale
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
Application number
US699147A
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English (en)
Inventor
Traut Rudolf
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2004422A publication Critical patent/US2004422A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C43/00—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/057—Metal working with cutter feed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/091—Plural discharge openings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/45—Scale remover or preventor
    • Y10T29/4506—Scale remover or preventor for hollow workpiece
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/45—Scale remover or preventor
    • Y10T29/4533—Fluid impingement
    • Y10T29/4544—Liquid jet

Definitions

  • the discharge rings are. according to the invention, provided-in the form of annular spray nozzles, and water under high pressure is discharged from the nozzles and directed on to the surface of the tube, the shrink ing action of the cold water on the hot iron and the mechanical efiect produced by the powerful jet of water combining to cause the complete removal of the scale from the tube.
  • a are the dimensioning rollers and b is the frame of the dimensioning rolling mill.
  • d are the rollers of the the dimensioning rolling mill
  • e are the rollers of the discharge train beyond the dimensioning rolling mill.
  • the tube feeding device I and bebind the rollers a is disposed the scaling device 9;
  • the scaling device g carries the guide funnel h on the side facing one of the dimensioning rollers while it is provided at the opposite end with the spray device which consists of the casing i and the nozzle member k screwed into it.
  • the nozzle member In is so screwed into the casing i that a narrow annular slot remains between the inner circumferentialedge of the nozzle member k and an innerannular projecting flange of the casing i; the width of the slot can be regulated by screwing the nozzle member k backwards or forwards.
  • a discharge pipe m To the bottom of the scaling device 9 is fitted a discharge pipe m.
  • a water-supply pipe n is connected at one or more positions and is directed towards the annular slot, the water-supply pipe 12 being at the same time connected to a valve 0 actuated by the electromagnet q the current to which is controlled by the switch 1' provided in front of the rolling mill and actuated by a lever s resting upon the feeding device I.
  • the retarding relay t introduced into the circuit prevents instantaneous stoppage of the electromagroller feeding train in front of net q and therefore the valve 0, so that when the switch 1' that controls the current is opened the water spray device is not at once disconnected but remains in operation for a further short period so that the rear end of the tube is scaled after the 5 tube leaves the tube feeding device f.
  • the apparatus operates as follows:
  • the tube 0, which has been cooled to a predetermined temperature, for example, 850 C., and which the rollers 11 of the train of guide rollers convey to the dimensioning rollers a shortly before it passes into the dimensioning rollers, strikes against the lever s of the switch 1', which rests upon the tube feeding device f; this causes current to flow through the electro- 15 magnet q, which is controlled by the switch 1'. and so the valve 0 is opened by the electromagnet.
  • a predetermined temperature for example, 850 C.
  • the water under pressure is thus caused to pass through the tube 12 to enter the annular chamber l in the nozzle casing z and it leaves the latter in the formof an annular jet passing through the annular slot formed between the casing i and the nozzle member is, being then dashed at an inclination against the surface of the tube, some of the water passing into the tube through the front end.
  • the scale mixes in the scaling device g with the outfiowing water and is discharged through the discharge pipe m into the sinter channel provided below the rolling mill where a sinter collecting box is advantageously provided.
  • the cycle of operations described recommences when the next tube is passed in. If the tubes are brought up for treatment quickly one after the other the control of water under pressure may be dispensed with, the water supplying tube n being placed in permanent connection with the pipe 10 which supplies the water under pressure, an ordinary valve being employed. In this case water under pressure is continuously introduced into the scaling device and the stoppage can be efiected by hand by means of the valve, only when the device is inoperative.
  • the water pressure is produced by means of a small pump driven by the motor operating the dimensioning rolling mill and it may be supplied to the spray nozzle by the tube n or by the interposition of the automatically controlled valve 0.
  • the valve 0 may be actuated by some other motive force such as compressed air or water under pressure, the switch 7' being constructed as a compressed air valve or a valve controlled by water under pressure.
  • valve 0 may replace the switch 1 and the valve be actuated directly by the lever s.
  • a process for removing 'scale from tubes and round bars of metal consisting in cooling the work in air after the welding or rolling operation below a temperature of about 850 C., passing it through a measuring rolling mill and. spraying it with liquid under pressure at an angle and in a direction opposed to its direction of movement for the removal of the scale by cooling action and by mechanical action.
  • Apparatus for removing scale from tubes and round bars of metal consisting of a measuring rolling mill and a scale-removing box, said scale-removing box comprising a guide funnel for the work disposed adjacent the rolling mill, and an annular spraying nozzle in a position removed from the rolling mill, said annular spraying nozzle being concentric with the path of the work and delivering liquid towards the axis of thelguide funnel.
  • Apparatus according to claim 2 having the nozzle consisting of a casing and an adjustable nozzle member forming between them an outlet directed at such an angle to the path of the Work that the sprayed liquid enters the work when the work is a tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
  • Press Drives And Press Lines (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
US699147A 1933-01-14 1933-11-22 Process for scaling tubes Expired - Lifetime US2004422A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET41965D DE600053C (de) 1933-01-14 1933-01-14 Verfahren zum Entzundern von Rohren und runden Staeben aus Metall

Publications (1)

Publication Number Publication Date
US2004422A true US2004422A (en) 1935-06-11

Family

ID=7561154

Family Applications (1)

Application Number Title Priority Date Filing Date
US699147A Expired - Lifetime US2004422A (en) 1933-01-14 1933-11-22 Process for scaling tubes

Country Status (5)

Country Link
US (1) US2004422A (en, 2012)
BE (1) BE400081A (en, 2012)
DE (1) DE600053C (en, 2012)
FR (1) FR764672A (en, 2012)
GB (1) GB418712A (en, 2012)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880739A (en) * 1955-09-15 1959-04-07 United States Steel Corp Apparatus for quenching and reeling rods
US2902064A (en) * 1957-05-16 1959-09-01 Goodspeed Machine Company Lubricating device
US2998823A (en) * 1956-05-15 1961-09-05 Libbey Owens Ford Glass Co Apparatus for cleaning surfaces
US3736618A (en) * 1971-03-24 1973-06-05 S Ramsey Tool for treating or cleaning wire rope
US3778862A (en) * 1971-10-20 1973-12-18 Reynolds Metals Co Apparatus for removing treating liquids from treated metal strip products
US4165626A (en) * 1977-05-20 1979-08-28 Pridy Whetstine B Wash water supplying drive head and scraper and cutter assembly
US6439883B1 (en) * 2000-04-11 2002-08-27 Ajax Magnethermic Corporation Threading and scale removal device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1029782B (de) * 1955-01-26 1958-05-14 Ernst Thomas Vorrichtung zum Entzundern von bandartigen Erzeugnissen, insbesondere Bandeisen
DE2727362B2 (de) * 1977-06-16 1979-12-13 Schloemann-Siemag Ag, 4000 Duesseldorf Kühlstrecke zum Abkühlen von Stabstahl
JPS5829171B2 (ja) * 1978-09-05 1983-06-21 石川島播磨重工業株式会社 熱延鋼帯のデスケ−リング方法
DE19535788C2 (de) * 1995-09-26 2003-04-17 Hermetik Hydraulik Ab Taeby Verfahren zum Kaltentzundern

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880739A (en) * 1955-09-15 1959-04-07 United States Steel Corp Apparatus for quenching and reeling rods
US2998823A (en) * 1956-05-15 1961-09-05 Libbey Owens Ford Glass Co Apparatus for cleaning surfaces
US2902064A (en) * 1957-05-16 1959-09-01 Goodspeed Machine Company Lubricating device
US3736618A (en) * 1971-03-24 1973-06-05 S Ramsey Tool for treating or cleaning wire rope
US3778862A (en) * 1971-10-20 1973-12-18 Reynolds Metals Co Apparatus for removing treating liquids from treated metal strip products
US4165626A (en) * 1977-05-20 1979-08-28 Pridy Whetstine B Wash water supplying drive head and scraper and cutter assembly
US6439883B1 (en) * 2000-04-11 2002-08-27 Ajax Magnethermic Corporation Threading and scale removal device

Also Published As

Publication number Publication date
FR764672A (fr) 1934-05-25
BE400081A (en, 2012) 1934-01-31
DE600053C (de) 1934-07-13
GB418712A (en) 1934-10-30

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