WO1990006178A1 - Blindage anti-usure des parties frontales des cylindres des presses a cylindres et procede pour l'application de ce blindage - Google Patents

Blindage anti-usure des parties frontales des cylindres des presses a cylindres et procede pour l'application de ce blindage Download PDF

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Publication number
WO1990006178A1
WO1990006178A1 PCT/DE1989/000705 DE8900705W WO9006178A1 WO 1990006178 A1 WO1990006178 A1 WO 1990006178A1 DE 8900705 W DE8900705 W DE 8900705W WO 9006178 A1 WO9006178 A1 WO 9006178A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
annular groove
armor
material layers
boundary wall
Prior art date
Application number
PCT/DE1989/000705
Other languages
German (de)
English (en)
Inventor
Bernd Hensell
Original Assignee
Klöckner-Humboldt-Deutz Aktiengesellschaft
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 Klöckner-Humboldt-Deutz Aktiengesellschaft filed Critical Klöckner-Humboldt-Deutz Aktiengesellschaft
Publication of WO1990006178A1 publication Critical patent/WO1990006178A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/30—Shape or construction of rollers
    • B02C4/305—Wear resistant rollers
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/24—Shaping by built-up welding

Definitions

  • roller surfaces are exposed to an extraordinarily high load and risk of wear, and not only the cylindrical roller surfaces, but also the end peripheral regions of the rollers, because for the lateral delimitation of the roller gap to prevent the side ⁇ Chen emergence of the ground material end plates are arranged, which cover the front edge regions of the rollers. So far, not only has the cylindrical surface of the roller been armored by welded-on metallic layers, but also the front edge regions of the roller, in that a ring groove which is open radially outwards and towards the front side has been machined into the two end edges of the roller base body which is then filled with metallic wear-resistant weld layers.
  • the surface of the armored layer welded on the end face of the roll which is initially uneven, must, however, be smooth for the purpose of interacting with the end plates laterally delimiting the roll gap, which has been made possible by time-consuming and costly grinding of the armored layer surface.
  • the object of the invention is to provide wear-resistant armor for the rollers of roller machines, in particular high-pressure roller presses in the edge region at the end of the roller, which armor is smooth from the start, has a long service life and is applied to the roller base body in an economical manner ⁇ bar.
  • the outer boundary wall of the annular groove facing the roller end face lies in a plane perpendicular to the axis of rotation of the roller, while the other (inner) annular groove boundary wall in the axial longitudinal section, as viewed advantageously, the annular groove is obliquely widening outwards.
  • Metallic buffer material welding layers are applied to the oblique ring groove boundary wall.
  • the remaining free cross-section of the annular groove is filled by welded-in metallic armor material layers, and advantageously up to one of the following armorings of the cylindrical surface of the roller base body at approximately the appropriate height.
  • the end faces of the rolls are then machined in their edge area, and so far until shortly before reaching the ring groove that a thin outer boundary wall of the ring groove consisting of the roll base material remains with a thickness of approximately less than 2 mm.
  • FIG. 1 shows the view of the basic body of a roller of a high-pressure roller press for comminuting granular material before the bed is applied before the wear-resistant armor according to the invention is applied, and
  • annular groove (13) or (14) from the first one is placed in the roller base body (10) as shown in FIG. 1, very close to the roller end faces (11) or (12) cylindrical roller surface (15) machined.
  • the annular groove (13) can be seen enlarged.
  • the outer boundary wall (16) of the annular groove (13) facing the roller end face (11) lies in a plane perpendicular to the axis of rotation of the roller, while the other (inner) annular groove boundary wall (17), viewed in the axial longitudinal section, obliquely arranges the annular groove to widen outwards in a V-shape is, with an angle to the vertical plane of z. B. about 20 °.
  • the distance (a) of the vertical annular groove boundary wall (16) from the roller end face (11) is z. B. 7 mm
  • the depth (b) of the annular groove (13) is z. B. 28 mm
  • the width (c) of the groove base is ⁇ z. B. 8 mm.
  • Metallic buffer material layers (18a) are first welded onto the inner, obliquely arranged boundary wall (17) of the annular groove (13) and then onto the adjacent area of the cylindrical surface
  • an annular bead of buffer material layers (18b) is welded, to a height (d) from the roller surface measured from, for. B. 7 mm.
  • the buffer material consists of an unalloyed or Cr, Mo alloyed ferritic material.
  • the armored Material (19) consists of an alloy using special carbide and nitride formers, which promote the formation of particularly fine carbides and a uniform distribution of the carbides, as a result of which the wear properties of the roller armor according to the invention are influenced particularly favorably.
  • the alloy material of the armor material layers (19), which has a hardness of more than 52 HRC (Rockwell C hardness test) can have the following composition in% by weight:
  • the roll end face (11) or just the opposite roll end face in its edge area from the roll surface (15) starting radially inwards to a depth (f) of z. B. turned 35 mm on a lathe, so far until shortly before reaching the annular groove (13) that a thin outer boundary wall of the annular groove (13) consisting of the roller base material with a thickness (g) of z . B. 1 mm remains.
  • the material material (20) of the roll base body to be machined is indicated by hatching to the left. After commissioning the roller press, the remaining z. B.
  • the remaining area of the cylindrical surface (15) of the roller base body up to height (d) with welded-on material layers and built up to height e with welded-on armored material layers in the area between the right-hand welded-on annular bead (18b) and a corresponding left-hand one Ring bead is coated on the other side of the roller.
  • the buffer material layers can, for. B. can be applied by submerged-band application and the armored material layers by filler application.
  • filler band deposition welding the alloy components in powder form are filled into a flat hollow band consisting of pure iron, and the actual alloy itself is only formed during the welding process.
  • the filler-band application welding results in a uniform distribution of the armor material alloy and a uniform coating build-up.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

Afin de constituer pour les cylindres des machines équipées de cylindres, notamment des presses à cylindres travaillant sous haute pression, en bordure de la partie frontale, un blindage anti-usure, présentant une durabilité élevée, applicable de façon économique sur le matériau de base du cylindre et offrant, dès l'application, une surface lisse, sans avoir besoin de recourir à des meulages coûteux, il est proposé de pratiquer dans le matériau de base du cylindre, à partir de la surface cylindrique, une saignée annulaire (13), à proximité immédiate des parties frontales du cylindre, de manière à appliquer, par soudage, dans cette saignée, des couches tampons métalliques (18), puis des couches de blindage (19) et d'usiner par tournage avec enlèvement de copeaux les bordures des parties frontales (11) du cylindre, en arrêtant le tournage juste avant d'atteindre la saignée annulaire, de manière à ménager une mince paroi limitrophe extérieure (16) de la saignée annulaire (13), formée par le matériau de base du cylindre, d'une épaisseur (g) d'un peu moins de 2 mm.
PCT/DE1989/000705 1988-12-02 1989-11-10 Blindage anti-usure des parties frontales des cylindres des presses a cylindres et procede pour l'application de ce blindage WO1990006178A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883840696 DE3840696A1 (de) 1988-12-02 1988-12-02 Verschleissfeste panzerung der walzenstirnseiten von walzenpressen und verfahren zum aufbringen der panzerung
DEP3840696.9 1988-12-02

Publications (1)

Publication Number Publication Date
WO1990006178A1 true WO1990006178A1 (fr) 1990-06-14

Family

ID=6368357

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1989/000705 WO1990006178A1 (fr) 1988-12-02 1989-11-10 Blindage anti-usure des parties frontales des cylindres des presses a cylindres et procede pour l'application de ce blindage

Country Status (3)

Country Link
DD (1) DD285931A5 (fr)
DE (1) DE3840696A1 (fr)
WO (1) WO1990006178A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4032615C2 (de) * 1990-10-15 1994-12-01 Kloeckner Humboldt Deutz Ag Verfahren und Vorrichtung zum Aufbringen einer verschleißfesten Panzerung auf die Walzenstirnseiten von Walzenpressen
DE4235297A1 (de) * 1992-10-20 1994-04-21 Krupp Polysius Ag Verfahren zum Herstellen einer Mahlwalze sowie Mahlwalze
DE4235499A1 (de) * 1992-10-21 1994-04-28 Krupp Polysius Ag Verfahren zum Aufbringen wenigstens einer harten Verschleißschicht auf eine Mahlwalze sowie Mahlwalze
DE10354679A1 (de) * 2003-11-22 2005-06-30 Khd Humboldt Wedag Ag Mahlwalze für die Druckzerkleinerung körnigen Gutes
DE102005040015B3 (de) * 2005-08-23 2007-04-12 Brückner Maschinenbau GmbH Walze sowie Verfahren zu deren Herstellung
WO2014071173A2 (fr) * 2012-10-31 2014-05-08 Flsmidth A/S Protection de bord à fixation de réception filetée interne
CN106238709A (zh) * 2016-07-26 2016-12-21 镇江富华轧辊有限公司 一种磨辊的制造/再制造耐磨材料及其制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3144268C2 (de) * 1980-12-18 1985-05-23 Veb Kombinat Nagema, Ddr 8045 Dresden Hohlwalze für Reibwalzwerke

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3144268C2 (de) * 1980-12-18 1985-05-23 Veb Kombinat Nagema, Ddr 8045 Dresden Hohlwalze für Reibwalzwerke

Also Published As

Publication number Publication date
DE3840696A1 (de) 1990-06-07
DD285931A5 (de) 1991-01-10

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