PL442341A1 - Method of rolling balls - Google Patents

Method of rolling balls

Info

Publication number
PL442341A1
PL442341A1 PL442341A PL44234122A PL442341A1 PL 442341 A1 PL442341 A1 PL 442341A1 PL 442341 A PL442341 A PL 442341A PL 44234122 A PL44234122 A PL 44234122A PL 442341 A1 PL442341 A1 PL 442341A1
Authority
PL
Poland
Prior art keywords
rollers
furrow
semi
finished product
cage
Prior art date
Application number
PL442341A
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 PL442341A priority Critical patent/PL442341A1/en
Publication of PL442341A1 publication Critical patent/PL442341A1/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
    • B21B1/08—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

Landscapes

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

Abstract

Sposób walcowania kul, zwłaszcza z główek złomowanych szyn kolejowych, charakteryzuje się tym, że półfabrykat (17) w kształcie odcinka główki 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 (h) mniejszą od połowy wysokości półfabrykatu (17) oraz szerokość (bo) 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), zaś promień (R1) bruzd (6a) i (6b) w kształcie owalnym jest jednakowy dla obu walców bruzdowych pierwszej klatki (5a) i (5b).The method of rolling balls, especially from the heads of scrapped railway rails, is characterized by the fact that the semi-finished product (17) in the shape of a section of the railway rail head 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 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 rotation at constant speed (n3) in opposite directions, at the same time the guide rollers (15a) and (15b) are set in rotation at constant speed (n4) in the same direction and at the same time the screw rollers (20a) are set in rotation 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 (h) smaller than half the height of the semi-finished product (17) and the width (bo) greater than the thickness of the semi-finished product (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 cylinders of the first cage (5a) and (5b) is equal to the diameter (D1) of the furrow cylinders of the first cage (5a) and (5b), and the radius (R1) of the furrows (6a) and (6b) in oval shape is the same for both furrow cylinders of the first frame (5a) and (5b).

PL442341A 2022-09-21 2022-09-21 Method of rolling balls PL442341A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL442341A PL442341A1 (en) 2022-09-21 2022-09-21 Method of rolling balls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL442341A PL442341A1 (en) 2022-09-21 2022-09-21 Method of rolling balls

Publications (1)

Publication Number Publication Date
PL442341A1 true PL442341A1 (en) 2024-03-25

Family

ID=90471981

Family Applications (1)

Application Number Title Priority Date Filing Date
PL442341A PL442341A1 (en) 2022-09-21 2022-09-21 Method of rolling balls

Country Status (1)

Country Link
PL (1) PL442341A1 (en)

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