GB1421673A - Device for producing semi-finished tubes of constant inner diameter with thinned ends - Google Patents

Device for producing semi-finished tubes of constant inner diameter with thinned ends

Info

Publication number
GB1421673A
GB1421673A GB86674A GB86674A GB1421673A GB 1421673 A GB1421673 A GB 1421673A GB 86674 A GB86674 A GB 86674A GB 86674 A GB86674 A GB 86674A GB 1421673 A GB1421673 A GB 1421673A
Authority
GB
United Kingdom
Prior art keywords
tube
rolls
mill
roll
clearance
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
Application number
GB86674A
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.)
OTHERS
Original Assignee
OTHERS
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
Priority to DE2363288A priority Critical patent/DE2363288A1/en
Priority to US426220A priority patent/US3864951A/en
Priority to FR7400469A priority patent/FR2322673A1/en
Application filed by OTHERS filed Critical OTHERS
Priority to GB86674A priority patent/GB1421673A/en
Publication of GB1421673A publication Critical patent/GB1421673A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/08—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills
    • B21B17/12—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills in a discontinuous process, e.g. plug-rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/14—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel, e.g. stretch-reducing mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
    • B21B31/30—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal by wedges or their equivalent

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

1421673 Rolling tubes G I GULYAEV, J N NEZNAMOV A I NECHIPORENKO V Y OSTRENKO P I KUTSENKO V K KURILENKO I V ERMOLOV A I CHEKMAREV V G VORONKO I P BOIKO V R MAMONTOV J I PUSTOVOICHENKO G M VOLOVIK V G ZAKHARENKO and VÀP PASCHENKO 8 Jan 1974 00866/74 Heading B3M [Also in Divisions G2-G3] A control system for a rolling mill stand producing tubes of constant internal diameter with thinned ends includes a drive arrangement for displacing the rolls to increase the clearance between the rolls when rolling the front end of the tube and decrease the clearance when rolling the rear end. A typical installation is shown in Fig. 1 where ingots are brought to a piercing mill 2 from a furnace 1 and after piercing are delivered by an inclined grate to a longitudinal mill 3 which includes a receiving trough 27, see Fig. 2. The mill rolls have round grooves 5, 51 and the upper roll 5 can be displaced by hydraulic ram arrangement 15 to vary the clearance between the rolls. Rollers 28 are provided for returning the tube to trough 27 on an idle pass when rolls 5 are moved apart and the tube can then be rotated through 90 degrees for a further pass to be made. The hydraulic fluid flow to rams 15 is controlled by electromagnetic valves 41, 42 energized from the drive engaging unit 44 shown in Fig. 5. The mill stand is provided with a tube end sensor 43, roll position sensors 50, 51 and a load sensor 52 which provide signals for use in the control system. The tube end sensor, as shown, includes two sensing elements 54, 55 which enables the front and rear ends of the tube to be identified. Additionally the length of the thinned end portion can be controlled by unit 46 which controls the speed of displacement of the roll 5 and unit 48 provides a delay. A clock pulse generator 56 is used to provide a length calibration and a pass number sensor 53 also is provided. In operation the rolls are driven to the minimum clearance position and retained there until the tube end enters the roll which is predetermined from sensor 43 and delay 45 and confirmed by load sensor 52 when the rolls are driven apart to roll a taper on the end of the tube. The cylindrical part of the tube is rolled with the rolls at the required spacing until the rear end of the tube is sensed when, after a delay, the rolls are driven to the minimum clearance position to provide the rear end taper. After two passes the tube moves to the oblique roll mill 6 which has the clearance between the rolls varied in a similar manner to that of mill 3. A roller conveyer 12 transfers the tube to reheating furnace 7 and stretch reducing mill 8.
GB86674A 1973-12-19 1974-01-08 Device for producing semi-finished tubes of constant inner diameter with thinned ends Expired GB1421673A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE2363288A DE2363288A1 (en) 1973-12-19 1973-12-19 PLANT FOR THE MANUFACTURING OF DOLLARS WITH A CONSTANT INSIDE DIAMETER AND WONDERED ENDS
US426220A US3864951A (en) 1973-12-19 1973-12-19 Device for producing semi-product tubes of constant inner diameter with thinned ends
FR7400469A FR2322673A1 (en) 1973-12-19 1974-01-07 DEVICE FOR THE MANUFACTURING OF BLANK TUBES WITH CONSTANT INTERNAL DIAMETER AND THINNED ENDS
GB86674A GB1421673A (en) 1973-12-19 1974-01-08 Device for producing semi-finished tubes of constant inner diameter with thinned ends

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2363288A DE2363288A1 (en) 1973-12-19 1973-12-19 PLANT FOR THE MANUFACTURING OF DOLLARS WITH A CONSTANT INSIDE DIAMETER AND WONDERED ENDS
US426220A US3864951A (en) 1973-12-19 1973-12-19 Device for producing semi-product tubes of constant inner diameter with thinned ends
FR7400469A FR2322673A1 (en) 1973-12-19 1974-01-07 DEVICE FOR THE MANUFACTURING OF BLANK TUBES WITH CONSTANT INTERNAL DIAMETER AND THINNED ENDS
GB86674A GB1421673A (en) 1973-12-19 1974-01-08 Device for producing semi-finished tubes of constant inner diameter with thinned ends

Publications (1)

Publication Number Publication Date
GB1421673A true GB1421673A (en) 1976-01-21

Family

ID=27431783

Family Applications (1)

Application Number Title Priority Date Filing Date
GB86674A Expired GB1421673A (en) 1973-12-19 1974-01-08 Device for producing semi-finished tubes of constant inner diameter with thinned ends

Country Status (4)

Country Link
US (1) US3864951A (en)
DE (1) DE2363288A1 (en)
FR (1) FR2322673A1 (en)
GB (1) GB1421673A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4190887A (en) * 1975-08-22 1980-02-26 Nippon Steel Corporation Press roll piercing method
DE2820865C2 (en) * 1978-05-10 1980-07-03 Mannesmann Ag, 4000 Duesseldorf Device for making pipes
FI97918C (en) * 1995-07-18 1997-03-10 Plustech Oy Speed control system for a cutting machine for a woodworking machine, in particular a grapple harvester
US8091455B2 (en) 2008-01-30 2012-01-10 Cummins Filtration Ip, Inc. Apparatus, system, and method for cutting tubes
US9878513B2 (en) * 2011-09-23 2018-01-30 Shanghai Yinsheng Rubber & Plastic Company Ltd. Decorative material rolling mill having adjustable roll gap
EP3566789A1 (en) * 2018-05-11 2019-11-13 Muhr und Bender KG Hydraulic arrangement and method for controlling a rolling gap of a rolling stand

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2209968A (en) * 1938-05-02 1940-08-06 Nat Tube Co Manufacture of bessemer steel seamless tubes
US2204491A (en) * 1938-05-16 1940-06-11 Heetkamp Heinrich Rolling mill plant for the manufacture of seamless tubes
US2432566A (en) * 1944-09-08 1947-12-16 Nat Tube Co Tapering metal tubes
US2635492A (en) * 1946-03-20 1953-04-21 Martin S Gettig Plug-handling mechanism for seamless tube mills
US2780118A (en) * 1953-02-05 1957-02-05 United States Steel Corp Apparatus for rolling tubes
FR1475645A (en) * 1965-07-23 1967-04-07 Vallourec New tube rolling mill and process used for the implementation of this rolling mill
DE1602019B2 (en) * 1966-04-06 1973-07-19 ROLLER FRAMEWORK WITH SEVERAL PRESSURE MEDIUM ADJUSTMENT CONTROL CYLINDERS BETWEEN THE ROLLER INSTALLATIONS

Also Published As

Publication number Publication date
US3864951A (en) 1975-02-11
FR2322673A1 (en) 1977-04-01
DE2363288A1 (en) 1975-08-21
FR2322673B1 (en) 1978-01-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee