PL442343A1 - Method of rolling balls - Google Patents

Method of rolling balls

Info

Publication number
PL442343A1
PL442343A1 PL442343A PL44234322A PL442343A1 PL 442343 A1 PL442343 A1 PL 442343A1 PL 442343 A PL442343 A PL 442343A PL 44234322 A PL44234322 A PL 44234322A PL 442343 A1 PL442343 A1 PL 442343A1
Authority
PL
Poland
Prior art keywords
rollers
furrow
cage
blank
stand
Prior art date
Application number
PL442343A
Other languages
Polish (pl)
Inventor
Arkadiusz Tofil
Janusz Tomczak
Damian Krawiec
Original Assignee
Firma Codogni Spółka Jawna
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 Firma Codogni Spółka Jawna filed Critical Firma Codogni Spółka Jawna
Priority to PL442343A priority Critical patent/PL442343A1/en
Priority to EP23193050.4A priority patent/EP4342598A1/en
Publication of PL442343A1 publication Critical patent/PL442343A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/085—Rail sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/14—Making articles shaped as bodies of revolution balls, rollers, cone rollers, or like bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/085—Rail sections
    • B21B1/0855—Rerolling or processing worn or discarded rail sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/005—Cantilevered roll stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/02—Making machine elements balls, rolls, or rollers, e.g. for bearings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Forging (AREA)

Abstract

Sposób walcowania kul, zwłaszcza ze środników złomowanych szyn kolejowych, charakteryzuje się tym, że półfabrykat (17) w kształcie środnika szyny kolejowej nagrzewa się do temperatury właściwej dla obróbki plastycznej na gorąco, po czym nagrzany półfabrykat (17) umieszcza się w bruzdach (2a) i (2b) rolek wprowadzających (1a) i (1b), następnie uruchamia się ruch obrotowy rolek prowadzących (1a) i (1b) z jednakową prędkością (n1) i przemieszcza się półfabrykat (17) w kierunku prowadnicy przedniej (3) ze stałą prędkością (V1), po czym wprawia się walce bruzdowe pierwszej klatki (5a) i (5b) w ruch obrotowy ze stałą prędkością (n2) w przeciwnych do siebie kierunkach oraz wprawia się walce bruzdowe drugiej klatki (11a) i (11b) w ruch obrotowy ze stałą prędkością (n3) w przeciwnych do siebie kierunkach, jednocześnie wprawia się rolki prowadzące (15a) i (15b) w ruch obrotowy ze stałą prędkością (n4) w zgodnym kierunku i jednocześnie wprawia się w ruch obrotowy walce śrubowe (20a) i (20b) z jednakowymi prędkościami (n5) w tym samym kierunku, po czym wprowadza się półfabrykat (17) do otworu prowadzącego (4) prowadnicy przedniej pierwszej klatki (3) i przemieszcza się półfabrykat (17) w kierunku walców bruzdowych pierwszej klatki (5a) i (5b) i wprowadza się półfabrykat (17) do bruzd (6a) i (6b) w kształcie owalnym, znajdujących się na powierzchni walców bruzdowych pierwszej klatki (5a) i (5b), które mają głębokość (h1) mniejszą od połowy wysokości półfabrykatu (17) oraz szerokość (b1) większą od grubości półfabrykatu (17), zaś średnica (D1) obu walców bruzdowych pierwszej klatki (5a) i (5b) jest jednakowa, przy czym osie obu walców bruzdowych pierwszej klatki (5a) i (5b) położone są w płaszczyźnie poziomej, a odległość między osiami obu walców bruzdowych pierwszej klatki (5a) i (5b) jest równa średnicy (D1) walców bruzdowych pierwszej klatki (5a) i (5b).The method of rolling balls, especially from the webs of scrap railway rails, is characterized by the fact that the semi-finished product (17) in the shape of a railway rail web is heated to the temperature appropriate for hot forming, and then the heated semi-finished product (17) is placed in the grooves (2a). and (2b) of the introduction rollers (1a) and (1b), then the rotation of the guide rollers (1a) and (1b) is started at the same speed (n1) and the semi-finished product (17) moves towards the front guide (3) with a constant speed (V1), then the furrow rollers of the first stand (5a) and (5b) are set in rotation at a constant speed (n2) in opposite directions and the furrow rollers of the second stand (11a) and (11b) are set in motion rotating at a constant speed (n3) in opposite directions, at the same time the guide rollers (15a) and (15b) are set in rotation at a constant speed (n4) in the same direction and at the same time the screw rollers (20a) and (20b) with equal speeds (n5) in the same direction, then the blank (17) is introduced into the guide hole (4) of the front guide of the first cage (3) and the blank (17) moves towards the groove rollers of the first cage (5a ) and (5b) and the semi-finished product (17) is introduced into the oval-shaped grooves (6a) and (6b) located on the surface of the groove cylinders of the first cage (5a) and (5b), which have a depth (h1) less than half height of the blank (17) and the width (b1) greater than the thickness of the blank (17), and the diameter (D1) of both furrow rollers of the first stand (5a) and (5b) is the same, and the axes of both furrow rollers of the first stand (5a) and (5b) are located in the horizontal plane, and the distance between the axes of both furrow rollers of the first cage (5a) and (5b) is equal to the diameter (D1) of the furrow rollers of the first cage (5a) and (5b).

PL442343A 2022-09-21 2022-09-21 Method of rolling balls PL442343A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL442343A PL442343A1 (en) 2022-09-21 2022-09-21 Method of rolling balls
EP23193050.4A EP4342598A1 (en) 2022-09-21 2023-08-23 Method of rolling balls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL442343A PL442343A1 (en) 2022-09-21 2022-09-21 Method of rolling balls

Publications (1)

Publication Number Publication Date
PL442343A1 true PL442343A1 (en) 2024-03-25

Family

ID=88017989

Family Applications (1)

Application Number Title Priority Date Filing Date
PL442343A PL442343A1 (en) 2022-09-21 2022-09-21 Method of rolling balls

Country Status (2)

Country Link
EP (1) EP4342598A1 (en)
PL (1) PL442343A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3199255A1 (en) * 2014-09-22 2017-08-02 JFE Steel Corporation Rail manufacturing method and rail manufacturing apparatus
CN107520249A (en) * 2017-07-28 2017-12-29 包头钢铁（集团）有限责任公司 A kind of method of complete universal four-roller last groove roll out steel rail
CN109759452A (en) * 2019-03-28 2019-05-17 攀钢集团攀枝花钢钒有限公司 The method for constructing rail specification adjustment amount model
CN111282993A (en) * 2020-03-13 2020-06-16 中冶赛迪上海工程技术有限公司 Near-net shape rail blank short-flow continuous casting and rolling production method and system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1910271A (en) * 1931-12-16 1933-05-23 Sheffield Steel Corp Process and apparatus for rerolling railroad rails
DD144893A1 (en) 1979-07-20 1980-11-12 Werner Penske MOTOR-INDEPENDENT ADDITIONAL HEATING
PL219678B1 (en) * 2011-05-11 2015-06-30 Lubelska Polt Tool for oblique rolling of ball type products
PL241251B1 (en) 2017-11-08 2022-08-29 Lubelska Polt Method for rolling of bars from scraped railway rail webs
PL241250B1 (en) * 2017-11-08 2022-08-29 Lubelska Polt Method for rolling of bars from scraped railway rail feet
PL241107B1 (en) * 2017-12-14 2022-08-01 Lubelska Polt Method for skew rolling of ball forgings
PL239814B1 (en) * 2020-02-21 2022-01-10 Lubelska Polt Device for rolling steel rods
PL239815B1 (en) * 2020-02-21 2022-01-10 Lubelska Polt Method of rolling steel rods

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3199255A1 (en) * 2014-09-22 2017-08-02 JFE Steel Corporation Rail manufacturing method and rail manufacturing apparatus
CN107520249A (en) * 2017-07-28 2017-12-29 包头钢铁（集团）有限责任公司 A kind of method of complete universal four-roller last groove roll out steel rail
CN109759452A (en) * 2019-03-28 2019-05-17 攀钢集团攀枝花钢钒有限公司 The method for constructing rail specification adjustment amount model
CN111282993A (en) * 2020-03-13 2020-06-16 中冶赛迪上海工程技术有限公司 Near-net shape rail blank short-flow continuous casting and rolling production method and system

Also Published As

Publication number Publication date
EP4342598A1 (en) 2024-03-27

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