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PL423386A1 - Method for rolling of bars from scraped railway rail webs - Google Patents

Method for rolling of bars from scraped railway rail webs

Info

Publication number
PL423386A1
PL423386A1 PL423386A PL42338617A PL423386A1 PL 423386 A1 PL423386 A1 PL 423386A1 PL 423386 A PL423386 A PL 423386A PL 42338617 A PL42338617 A PL 42338617A PL 423386 A1 PL423386 A1 PL 423386A1
Authority
PL
Poland
Prior art keywords
blank
rollers
rolling
shape
rail
Prior art date
Application number
PL423386A
Other languages
Polish (pl)
Other versions
PL241251B1 (en
Inventor
Zbigniew Pater
Janusz Tomczak
Tomasz Bulzak
Original Assignee
Lubelska Polt
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 Lubelska Polt filed Critical Lubelska Polt
Priority to PL423386A priority Critical patent/PL241251B1/en
Publication of PL423386A1 publication Critical patent/PL423386A1/en
Publication of PL241251B1 publication Critical patent/PL241251B1/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
    • 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
    • B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • 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
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Abstract

Sposób walcowania prętów ze średników złomowanych szyn kolejowych polega na tym, że półfabrykat w kształcie odcinka średnika odciętego od złomowanej szyny kolejowej nagrzewa się powyżej temperatury rekrystalizacji, następnie wprowadza się półfabrykat pomiędzy dwa walce, po czym wprawia się dwa walce w przeciwbieżny ruch obrotowy z jednakową prędkością i zgniata się półfabrykat w kształcie odcinka środnika złomowanej szyny kolejowej w wykroju sześciokątnym, utworzonym przez bruzdy, znajdujące się na powierzchniach walców, jednocześnie wprawia się półfabrykat w ruch postępowy ze stałą prędkością i przemieszcza się półfabrykat w kierunku zgodnym z prędkością obwodową walców i kształtuje się z półfabrykatu w kształcie odcinka środnika odciętego od złomowanej szyny kolejowej półwyrób (6) w kształcie pręta o przekroju zbliżonym do sześciokątnego, następnie po przewalcowaniu półfabrykatu między walcami przemieszcza się półwyrób (6) do tulei prowadzącej (10) i wprowadza się półwyrób (6) pomiędzy trzy walce stożkowe (7a), (7b) oraz (7c), które rozmieszczone są symetrycznie dookoła osi walcowania co 120° i pochylone pod jednakowymi kątami względem osi walcowania, następnie wprawia się trzy walce stożkowe (7a), (7b) oraz (7c) w ruch obrotowy w tym samym kierunku i z jednakową prędkością (n2), po czym oddziałuje się na półwyrób (6) stożkowymi powierzchniami (8a), (8b) oraz (8c) walców stożkowych (7a), (7b) oraz (7c) i wprawia się półwyrób (6) w ruch obrotowy ze stałą prędkością (n3).The method of rolling bars from the semicolons of scrap rail rails consists in the fact that the semi-finished product in the shape of a semicolon section cut off from the scrap rail gets heated above the recrystallization temperature, then the blank is introduced between two rollers, after which two rollers are put in opposite rotation at the same speed and the blank is shaped in the shape of a web section of the scrapped rail in a hexagonal pattern formed by grooves located on the surface of the rollers, at the same time the blank is put into progressive movement at a constant speed and the blank moves in the direction consistent with the circumferential speed of the rollers and is shaped of the blank in the shape of a web section cut off from the scraped rail, the blank (6) in the shape of a bar with a hexagonal section, then after rolling the blank between the rollers moves blank (6) into the guide sleeve (10) and blank (6) is inserted between three conical rollers (7a), (7b) and (7c), which are arranged symmetrically around the rolling axis every 120 ° and inclined at equal angles to the axis rolling, then three conical rollers (7a), (7b) and (7c) are set into rotational motion in the same direction and with the same speed (n2), after which the blank (6) is conical (8a), (8b) ) and (8c) tapered rollers (7a), (7b) and (7c) and the blank (6) is set in rotational motion at a constant speed (n3).

PL423386A 2017-11-08 2017-11-08 The method of rolling bars from the webs of scrapped railway rails PL241251B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL423386A PL241251B1 (en) 2017-11-08 2017-11-08 The method of rolling bars from the webs of scrapped railway rails

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL423386A PL241251B1 (en) 2017-11-08 2017-11-08 The method of rolling bars from the webs of scrapped railway rails

Publications (2)

Publication Number Publication Date
PL423386A1 true PL423386A1 (en) 2019-05-20
PL241251B1 PL241251B1 (en) 2022-08-29

Family

ID=66518976

Family Applications (1)

Application Number Title Priority Date Filing Date
PL423386A PL241251B1 (en) 2017-11-08 2017-11-08 The method of rolling bars from the webs of scrapped railway rails

Country Status (1)

Country Link
PL (1) PL241251B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4342598A1 (en) 2022-09-21 2024-03-27 "Firma Codogni" Spolka Jawna Method of rolling balls
EP4342599A1 (en) 2022-09-21 2024-03-27 "Firma Codogni" Spolka Jawna Method of rolling balls

Citations (4)

* 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
US4391117A (en) * 1978-06-02 1983-07-05 Friedrich Kocks Gmbh & Company Rolling mills and methods of rolling
JPH09285802A (en) * 1996-04-24 1997-11-04 Nippon Steel Corp Inclination rolling method for rod wire
US20130074566A1 (en) * 2011-09-28 2013-03-28 W. Silver Inc. No-slit hot rolling of railroad rails

Patent Citations (4)

* 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
US4391117A (en) * 1978-06-02 1983-07-05 Friedrich Kocks Gmbh & Company Rolling mills and methods of rolling
JPH09285802A (en) * 1996-04-24 1997-11-04 Nippon Steel Corp Inclination rolling method for rod wire
US20130074566A1 (en) * 2011-09-28 2013-03-28 W. Silver Inc. No-slit hot rolling of railroad rails

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4342598A1 (en) 2022-09-21 2024-03-27 "Firma Codogni" Spolka Jawna Method of rolling balls
EP4342599A1 (en) 2022-09-21 2024-03-27 "Firma Codogni" Spolka Jawna Method of rolling balls

Also Published As

Publication number Publication date
PL241251B1 (en) 2022-08-29

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