PL423385A1 - Method for rolling of bars from scraped railway rail feet - Google Patents

Method for rolling of bars from scraped railway rail feet

Info

Publication number
PL423385A1
PL423385A1 PL423385A PL42338517A PL423385A1 PL 423385 A1 PL423385 A1 PL 423385A1 PL 423385 A PL423385 A PL 423385A PL 42338517 A PL42338517 A PL 42338517A PL 423385 A1 PL423385 A1 PL 423385A1
Authority
PL
Poland
Prior art keywords
blank
rollers
rail
shape
scraped
Prior art date
Application number
PL423385A
Other languages
Polish (pl)
Other versions
PL241250B1 (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 PL423385A priority Critical patent/PL241250B1/en
Publication of PL423385A1 publication Critical patent/PL423385A1/en
Publication of PL241250B1 publication Critical patent/PL241250B1/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)
  • Heat Treatment Of Articles (AREA)
  • Forging (AREA)

Abstract

Sposób walcowania prętów ze stopy złomowanej szyny kolejowej polega na tym, że półfabrykat w kształcie odcinka części środkowej stopy odciętej 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 części środkowej stopy odciętej od złomowanej szyny kolejowej w wykroju sześciokątnym, utworzonym przez bruzdy i 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 części środkowej stopy odciętej 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 foot of a scrap rail rail consists in the fact that the blank in the shape of a section of the middle part of the foot cut off from the scrap rail rail heats above the recrystallization temperature, then the blank is inserted between two rollers, after which the two rollers are put in opposite rotation at the same speed and crumple, the blank in the shape of a section of the middle part of the foot cut off from the scraped rail in a hexagonal pattern, formed by furrows and 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 speed peripheral rollers and is formed from a blank in the shape of a section of the middle part of the foot cut off from the scraped rail, the blank (6) in the shape of a bar with a cross-section close to hexagonal, then after When the blank is between the rolls, the blank (6) moves into the guide sleeve (10) and the 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 rolling axis, then three conical rollers (7a), (7b) and (7c) are rotated in the same direction and with the same speed (n2), after which the blank (6) is tapered with conical surfaces (8a), (8b) and (8c) tapered rollers (7a), (7b) and (7c) and the blank (6) is rotated at a constant speed (n3).

PL423385A 2017-11-08 2017-11-08 The method of rolling bars from the foot of a scrapped railway rail PL241250B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL423385A PL241250B1 (en) 2017-11-08 2017-11-08 The method of rolling bars from the foot of a scrapped railway rail

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL423385A PL241250B1 (en) 2017-11-08 2017-11-08 The method of rolling bars from the foot of a scrapped railway rail

Publications (2)

Publication Number Publication Date
PL423385A1 true PL423385A1 (en) 2019-05-20
PL241250B1 PL241250B1 (en) 2022-08-29

Family

ID=66518974

Family Applications (1)

Application Number Title Priority Date Filing Date
PL423385A PL241250B1 (en) 2017-11-08 2017-11-08 The method of rolling bars from the foot of a scrapped railway rail

Country Status (1)

Country Link
PL (1) PL241250B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL246044B1 (en) * 2022-09-21 2024-11-25 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

Also Published As

Publication number Publication date
PL241250B1 (en) 2022-08-29

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