DE949554C - Groove roller for hot rolling profiles - Google Patents

Groove roller for hot rolling profiles

Info

Publication number
DE949554C
DE949554C DEG17923A DEG0017923A DE949554C DE 949554 C DE949554 C DE 949554C DE G17923 A DEG17923 A DE G17923A DE G0017923 A DEG0017923 A DE G0017923A DE 949554 C DE949554 C DE 949554C
Authority
DE
Germany
Prior art keywords
hot rolling
diameter
groove roller
recesses
rolling profiles
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
DEG17923A
Other languages
German (de)
Inventor
Wilhelm Kueper
Georg Wellerdiek
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.)
GUSSSTAHLWERK BOCHUMER VER AG
Original Assignee
GUSSSTAHLWERK BOCHUMER VER AG
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 GUSSSTAHLWERK BOCHUMER VER AG filed Critical GUSSSTAHLWERK BOCHUMER VER AG
Priority to DEG17923A priority Critical patent/DE949554C/en
Application granted granted Critical
Publication of DE949554C publication Critical patent/DE949554C/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
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/08—Lubricating, cooling or heating rolls internally
    • 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
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/08—Lubricating, cooling or heating rolls internally
    • B21B2027/083—Lubricating, cooling or heating rolls internally cooling internally

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Description

Bei Kaliberwalzen, insbesondere solchen mit engen Kaliberteilen, z. B. den Fußkaliberteilen von Schienen, treten, große Wärmestauungen auf. Dadurch wird die Benutzungsdauer der Walzen wesentlich verkürzt. Die iinifolge solcher Wärme-Stauungen an solchen Kaliberteilen auftretenden ■ Schrumpfrissei führen zu Ränderbrüchen und manchmal zu solchen Schaden, daß die Walze, auch z. B. durch einen warm aufgezogenen Stahlring, nicht mehr wieder brauchbar gemacht werden kann.In caliber rolls, especially those with narrow caliber parts, z. B. the foot caliber parts of Rails, occur, large accumulations of heat. This will increase the useful life of the rollers significantly shortened. The result of such accumulations of heat ■ Shrinkage cracks occurring on such caliber parts lead to edge fractures and sometimes to such damage that the roller, also z. B. by means of a warm steel ring, can no longer be made usable again.

Gemäß der Erfindung wird dieser Nachteil dadurch behoben, daß die Abkühlungsfläche der Walze durch Ausnehmungen, z. B. durch Nuten oder Bohrlöcher, vergrößert wird. Versuche haben ergeben, daß die Beinutzungsdauer der. Walzen dadurch ganz erheblich verlängert werden kann.According to the invention, this disadvantage is eliminated in that the cooling surface of the Roller through recesses, e.g. B. is enlarged by grooves or holes. Have attempts show that the duration of use of the. Rolling can be lengthened quite considerably as a result.

Die Zeichnung zeigt ein. Ausführungsbeispiel der Erfindung,
so Fig. ι zeigt eine Walze gemäß der Erfindung;The drawing shows a. Embodiment of the invention,
so Fig. ι shows a roller according to the invention;

Fig. 2 zeigt einen Schnitt nach der Linie H-II der Fig. i.Fig. 2 shows a section along the line H-II of Fig. I.

Die dargestellte Walze ist bestimmt zum Walzen von Eisenbahnschienen. Zur Erzeugung des Schienenfußes ist dem sehr engen Kaliberteil i, as dessen Grund einen verhältnismäßig kleinen Durchmesser dx hat, ein Kaliberrand 2 benachbart, \velcher einen sehr viel größeren Durchmesser d2 von etwa 1090 mm hat. Im Kaliberrand 2 sind zur "Vergrößerung der Abkühlungsfläche zahlreiche radiale Löcher von 20 mm Durchmesser gebohrt, die bis um etwa 50 mm unterhalb des Durchmessers dt reichen.The roller shown is intended for rolling railroad tracks. To produce the rail foot, the very narrow caliber part i, the base of which has a relatively small diameter d x , is adjacent to a caliber edge 2, which has a much larger diameter d 2 of about 1090 mm. In the caliber rim 2, numerous radial holes with a diameter of 20 mm are drilled to "enlarge the cooling surface, which extend to about 50 mm below the diameter d t .

Claims (3)

Patentansprüche:Patent claims: 1. Kaliberwalze zum Warmwalzen von Profilen, dadurch gekennzeichnet, daß ihre Abkühlungsfläche durch Ausnehmungen ihrer Oberfläche (Nuten, Löcher od. dgl.) vergrößert ist.1. Groove roll for hot rolling of profiles, characterized in that its cooling surface is formed by recesses in its surface (Grooves, holes or the like.) Is enlarged. 2. Walze nach Anspruch 1, dadurch gekennzeichnet, daß die Ausnehmungen in einem Walzenteil liegen, der einen größeren Durchmesser hat als benachbarte Teile.2. Roller according to claim 1, characterized in that the recesses in one Roll part lie, which has a larger diameter than adjacent parts. 3. Walze nach Anspruch 2, dadurch gekennzeichnet, daß die Ausnehmungen bis unter einen Walzendurchmiesser reichen, der kleiner ist als der Durchmesser eines benachbarten Kaliberteiles kleineren Durchmessers.3. Roller according to claim 2, characterized in that the recesses to below one Roll diameter range that is smaller than the diameter of an adjacent caliber part smaller diameter.
DEG17923A 1955-09-05 1955-09-06 Groove roller for hot rolling profiles Expired DE949554C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG17923A DE949554C (en) 1955-09-05 1955-09-06 Groove roller for hot rolling profiles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1143386X 1955-09-05
DEG17923A DE949554C (en) 1955-09-05 1955-09-06 Groove roller for hot rolling profiles

Publications (1)

Publication Number Publication Date
DE949554C true DE949554C (en) 1956-09-20

Family

ID=25978061

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG17923A Expired DE949554C (en) 1955-09-05 1955-09-06 Groove roller for hot rolling profiles

Country Status (1)

Country Link
DE (1) DE949554C (en)

Similar Documents

Publication Publication Date Title
DE949554C (en) Groove roller for hot rolling profiles
DE426939C (en) Printing form in the form of rollers or plates with a hard rubber printing surface
DEG0017923MA (en)
GB286089A (en) An improved method of repairing or building up the surfaces of metal articles
DE880452C (en) Process for the manufacture of railroad tracks
DE378451C (en) Process for the production of roller baskets
DE848893C (en) Turning tool base
DE889601C (en) Method for hardening rail heads
DE335805C (en) Rock drill
DE536728C (en) Process for the extraction of rolling masses in civil engineering
DE886000C (en) Process for carburizing and hardening of dimensionally stable rolling bearing bodies produced by non-cutting deformation
DE647763C (en) Process for hardening objects made of beryllium-free steel alloys
DE907532C (en) Intermediate quenching of unalloyed and alloyed steels
DE441450C (en) Roller wedge for machine parts that can be moved like a slide
DE843423C (en) Rolls, in particular cold rolls, and processes for their production
DE674593C (en) Nitriding steel
DE745810C (en) Manufacture of hot rolls
DE660761C (en) Process for the production of wear-resistant centrifugal castings
DE818487C (en) Profile for the production of the inner punches adjustable iron pit punches
AT313953B (en) Rolling bearings and methods of heat treatment of their parts
DE281366C (en)
DE938793C (en) Use of annealed steel strips for the production of profiled rolling stock
DE583394C (en) Bearings for the roll necks of highly stressed rolling mills
DE904186C (en) Thomasstahl for parts that are heated during their manufacture with subsequent accelerated cooling
DE762326C (en) Steel and heat treatment for rails