WO1990006811A1 - Abrasion-resistant steel cladding for the roller surfaces of roller machines, in particular high-pressure roller presses - Google Patents

Abrasion-resistant steel cladding for the roller surfaces of roller machines, in particular high-pressure roller presses Download PDF

Info

Publication number
WO1990006811A1
WO1990006811A1 PCT/DE1989/000718 DE8900718W WO9006811A1 WO 1990006811 A1 WO1990006811 A1 WO 1990006811A1 DE 8900718 W DE8900718 W DE 8900718W WO 9006811 A1 WO9006811 A1 WO 9006811A1
Authority
WO
WIPO (PCT)
Prior art keywords
armor
roller
layer
layers
welding
Prior art date
Application number
PCT/DE1989/000718
Other languages
German (de)
French (fr)
Inventor
Leonhard HÄRIG
Klaus-Dieter Partz
Rainer Beck
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
Priority to BR898907258A priority Critical patent/BR8907258A/en
Publication of WO1990006811A1 publication Critical patent/WO1990006811A1/en
Priority to DK199690A priority patent/DK199690D0/en

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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • 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
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/30—Coating surfaces
    • F16C2223/46—Coating surfaces by welding, e.g. by using a laser to build a layer

Definitions

  • the invention relates to a wear-resistant surface armor for the rollers of roller machines, in particular of high-pressure roller presses for pressure comminution of granular goods.
  • the armor layer cannot be made as thick as desired, because only a maximum of about three welding layers, each about 3 mm thick, can be welded onto one another to form an overall maximum of about 9 mm thick armor layer. If the number of weld layers built up on top of one another from the hard armor material were increased, there is a risk that the armor layer would crack and possibly at least partially flake off due to the stresses. A layer of armor of z. B. only 9 mm thick is worn out comparatively quickly if, with the appropriately armored rollers, the above-mentioned material bed comminution of very hard materials such as, for. B. certain ores is performed. However, the operators of such two-roller machines require a machine with roller armor, the service life of which is long because each stoppage of the machine causes a very high loss for the operator.
  • the object of the invention is to create a wear-resistant surface coating for the rollers of roller machines, in particular high-pressure roller presses, which has a long service life and can be applied economically to the roller base body.
  • This object is achieved according to the invention with a roller armor and with an application method, which are characterized in advantageous embodiments in claims 1 to 6.
  • a ductile metallic buffer layer or intermediate layer and a hard wear-resistant armor layer are alternately welded onto the roller base body radially from the inside out, d. H.
  • the total thickness of the armor according to the invention and thus also its service life can in principle be made arbitrarily high or multiplied as required. Longer downtimes of the repair less often mean downtimes of the machine, which means less losses due to downtimes for the machine operator.
  • the tougher metallic intermediate layers which are more ductile in comparison to the armored layers, are each able to compensate for the stresses occurring in the armor according to the invention and each to carry a new armored layer.
  • the intermediate layer arranged between the individual armor layers advantageously consists in each case of a single weld layer, while the armor layers each consist of several weld layers.
  • the thickness of the single-layer intermediate layer can be in a range of e.g. B. 1 to 6 mm, while the thickness of the multilayer, z. B. two- or three-layer armor layer can be about 8 to about 15 mm.
  • the thickness of the single-layer intermediate layer is as thin as necessary, e.g. B. 3 mm, thickness of the multilayered armor layer z. B. 9 mm, manufactured from z. B. three welding layers of 3 mm each or two welding layers of 4.5 mm each.
  • On the Walzengrundk ⁇ rper can z. B. 15 welding layers can be welded on one after the other.
  • the ductile metallic intermediate layers of the roller armor according to the invention consist of a ferritic material with a hardness of more than about 20 to about 45 HRC (Rockwell C hardness test).
  • the material of the armor layers which has a hardness of more than 52 HRC, can consist of a metallic alloy using special carbide and nitride formers. Such a material is e.g. B. described in patent application P 38 32 225.0.
  • the service life of the roller armor according to the invention is high even in the case of a dynamic pressure threshold stress. Large jumps in hardness within the roller armor during the transition from the armor layers to the intermediate layers should be avoided.
  • a method for building up the roller armor is characterized in that the intermediate layers are applied by submerged-arc strip welding and the armored layers by submerged-arc filler coating welding.
  • the alloy components are in powder form in a z. B. from Pure flat hollow band filled with pure iron and the actual alloy itself only arises during the welding process.
  • the full band build-up welding ensures an even 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)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Abstract

´n order to obtain a durable abrasion-resistant steel cladding for the rollers of roller machines, in particular high-pressure roller presses for pressure comminution of granular materials, the invention proposes that a plurality of ductile metallic buffer or intermediate layers and hard, abrasion resistant steel cladding layers alternating radially outward be welded onto the basic roller body (sandwich process).

Description

Beschreibungdescription
Verschleißfeste Oberflächenpanzerung für die Walzen von Walzenmaschinen, insbesondere Hochdruck-WalzenpressenWear-resistant surface armor for the rollers of roller machines, especially high-pressure roller presses
Die Erfindung betrifft eine verschleißfeste Oberflächen¬ panzerung für die Walzen von Walzenmaschinen, insbesondere von Hochdruck-Walzenpressen zur Druckzerkleinerung körni¬ gen Gutes.The invention relates to a wear-resistant surface armor for the rollers of roller machines, in particular of high-pressure roller presses for pressure comminution of granular goods.
Bei Walzenbrechern und Walzenmühlen wird sprödes Mahlgut in den Walzenspalt eingezogen und dort einer Druckzerklei¬ nerung unterworfen. Bekannt ist auch die sogenannte Gut¬ bettzerkleinerung im Walzenspalt einer Hochdruck-Walzen- presse, bei der die einzelnen Partikel des durch Reibung in den Walzenspalt eingezogenen Mahlgutes in einem Gut¬ bett, d. h. in einer zwischen den beiden Walzenoberflächen zusammengedrückten Materialschüttung bei Anwendung eines extrem hohen Druckes gegenseitig zerquetscht werden (EP-PS 0 084 383). Es versteht sich, daß dabei die Walzenoberflä¬ chen einer außerordentlich hohen Beanspruchung und Ver¬ schleißgefahr ausgesetzt sind. Es ist daher bekannt, die Walzenoberfläche dadurch zu panzern, indem man auf den Walzengrundkδrper zunächst eine vergleichsweise weiche metallische Pufferlage und darauf eine gegebenenfalls mehrlagige harte verschleißfeste Panzerschicht auf¬ schweißt. Es hat sich aber in der Praxis gezeigt, daß die Panzerschicht nicht beliebig dick gemacht werden kann, weil sich nur maximal etwa drei Schweißlagen zu je etwa 3 mm zu einer insgesamt dann maximal etwa 9 mm dicken Pan¬ zerschicht aufeinander aufschweißen lassen. Würde man die Anzahl der aus dem harten Panzerwerkstoff aufeinander auf¬ gebauten Schweißlagen noch erhöhen, so ist die Gefahr gegeben, daß die Panzerschicht infolge der Spannungen Risse bekommt und gegebenenfalls zumindest teilweise ab¬ platzt. Eine Panzerschicht von z. B. nur 9 mm Dicke ist aber gerade dann verhältnismäßig schnell verschlissen, wenn mit den entsprechend gepanzerten Walzen die obenge¬ nannte Gutbettzerkleinerung von sehr harten Stoffen wie z. B. bestimmten Erzen durchgeführt wird. Die Betreiber sol¬ cher Zweiwalzenmaschinen verlangen aber eine Maschine mit einer Walzenpanzerung, deren Standzeit hoch ist, weil jeder Stillstand der Maschine für den Betreiber einen sehr hohen Verlust verursacht.In the case of roll crushers and roll mills, brittle ground material is drawn into the roll gap and subjected to pressure comminution there. Also known is the so-called material bed comminution in the roller gap of a high-pressure roller press, in which the individual particles of the ground material drawn into the roller gap by friction are in a material bed, ie in a material bed compressed between the two roller surfaces when using an extremely high amount Pressure are crushed mutually (EP-PS 0 084 383). It goes without saying that the roller surfaces are exposed to an extraordinarily high load and risk of wear. It is therefore known that Armor the roller surface by first welding a comparatively soft metallic buffer layer onto the roller base body and then a possibly multi-layer hard wear-resistant armor layer thereon. However, it has been shown in practice that the armor layer cannot be made as thick as desired, because only a maximum of about three welding layers, each about 3 mm thick, can be welded onto one another to form an overall maximum of about 9 mm thick armor layer. If the number of weld layers built up on top of one another from the hard armor material were increased, there is a risk that the armor layer would crack and possibly at least partially flake off due to the stresses. A layer of armor of z. B. only 9 mm thick is worn out comparatively quickly if, with the appropriately armored rollers, the above-mentioned material bed comminution of very hard materials such as, for. B. certain ores is performed. However, the operators of such two-roller machines require a machine with roller armor, the service life of which is long because each stoppage of the machine causes a very high loss for the operator.
Der Erfindung liegt die Aufgabe zugrunde, für die Walzen von Walzenmaschinen, insbesondere von Hochdruck-Walzen- pressen, eine verschleißfeste Oberflächenbeschichtung zu schaffen, die eine hohe Standzeit aufweist und in wirt- schaflicher Weise auf den Walzengrundkδrper aufbringbar ist. Diese Aufgabe wird gemäß der Erfindung mit einer Walzen¬ panzerung und mit einem Aufbringverfahren gelöst, die mit vorteilhaften Ausgestaltungen in den Ansprüchen 1 bis 6 gekennzeichnet sind.The object of the invention is to create a wear-resistant surface coating for the rollers of roller machines, in particular high-pressure roller presses, which has a long service life and can be applied economically to the roller base body. This object is achieved according to the invention with a roller armor and with an application method, which are characterized in advantageous embodiments in claims 1 to 6.
Dadurch, daß bei der erfindungsgemäßen Walzenpanzerung auf den Walzengrundkörper radial von innen nach außen gesehen mehrmals abwechselnd eine duktile metallische Puffer¬ schicht bzw. Zwischenschicht und eine harte verschlei߬ feste Panzerschicht aufgeschweißt sind, d. h. also daß auf die innerste Panzerschicht unter Zwischenlage jeweils einer Zwischenschicht viele weitere Panzerschichten aufge¬ schweißt sind (Sandwich-Verfahren), lassen sich die Ge¬ samtdicke der erfindungsgemäßen Panzerung und somit auch deren Standzeit im Prinzip je nach Bedarf beliebig hoch machen bzw. vervielfachen. Längere Standzeiten der Panze¬ rung bedeuten weniger oft Ausfallzeiten der Maschine, wo¬ durch beim Maschinenbetreiber weniger durch Ausfallzeiten bedingte Verluste entstehen. Die im Vergleich zu den Pan¬ zerschichten duktileren zäheren metallischen Zwischen¬ schichten sind jeweils in der Lage, die in der erfindungs¬ gemäßen Panzerung auftretenden Spannungen auszugleichen und jeweils eine erneute Panzerschicht zu tragen.Characterized in that, in the roller armor according to the invention, a ductile metallic buffer layer or intermediate layer and a hard wear-resistant armor layer are alternately welded onto the roller base body radially from the inside out, d. H. So that many additional armor layers are welded onto the innermost armor layer with the interposition of an intermediate layer (sandwich method), the total thickness of the armor according to the invention and thus also its service life can in principle be made arbitrarily high or multiplied as required. Longer downtimes of the repair less often mean downtimes of the machine, which means less losses due to downtimes for the machine operator. The tougher metallic intermediate layers, which are more ductile in comparison to the armored layers, are each able to compensate for the stresses occurring in the armor according to the invention and each to carry a new armored layer.
Nach einem weiteren Merkmal der Erfindung besteht die zwi¬ schen den einzelnen Panzerschichten jeweils angeordnete Zwischenschicht mit Vorteil jeweils aus einer einzigen Schweißlage, während die Panzerschichten jeweils aus mehreren Schweißlagen bestehen. So kann die Dicke der ein¬ lagigen Zwischenschicht in einem Bereich von z. B. 1 bis 6 mm liegen, während die Dicke der mehrlagigen, z. B. zwei- oder dreilagigen Panzerschicht etwa 8 bis etwa 15 mm be¬ tragen kann. Als Zahlenbeispiel wird angegeben: Dicke der einlagigen Zwischenschicht so dünn wie nötig, z. B. 3 mm, Dicke der mehrlagigen Panzerschicht z. B. 9 mm, herge¬ stellt aus z. B. drei Schweißlagen zu je 3 mm oder aus zwei Schweißlagen zu je 4,5 mm. Auf den Walzengrundkδrper können insgesamt durchaus z. B. 15 Schweißlagen nacheinan¬ der aufgeschweißt sein.According to a further feature of the invention, the intermediate layer arranged between the individual armor layers advantageously consists in each case of a single weld layer, while the armor layers each consist of several weld layers. For example, the thickness of the single-layer intermediate layer can be in a range of e.g. B. 1 to 6 mm, while the thickness of the multilayer, z. B. two- or three-layer armor layer can be about 8 to about 15 mm. As a numerical example, the thickness of the single-layer intermediate layer is as thin as necessary, e.g. B. 3 mm, thickness of the multilayered armor layer z. B. 9 mm, manufactured from z. B. three welding layers of 3 mm each or two welding layers of 4.5 mm each. On the Walzengrundkδrper can z. B. 15 welding layers can be welded on one after the other.
Die duktilen metallischen Zwischenschichten der erfin¬ dungsgemäßen Walzenpanzerung bestehen aus einem ferriti¬ schen Werkstoff mit einer Härte von mehr als etwa 20 bis etwa 45 HRC (Härteprüfung nach Rockwell C). Der eine Härte von mehr als 52 HRC aufweisende Werkstoff der Panzer¬ schichten kann aus einer metallischen Legierung unter Ver¬ wendung von Sonderkarbid- und Nitridbildnern bestehen. Ein solcher Werkstoff ist z. B. in der Patentanmeldung P 38 32 225.0 beschrieben.The ductile metallic intermediate layers of the roller armor according to the invention consist of a ferritic material with a hardness of more than about 20 to about 45 HRC (Rockwell C hardness test). The material of the armor layers, which has a hardness of more than 52 HRC, can consist of a metallic alloy using special carbide and nitride formers. Such a material is e.g. B. described in patent application P 38 32 225.0.
Das standzeitvermδger der erfindungsgemäßen Walzenpanze¬ rung ist auch bei einer dynamischen Druckschwellbeanspru¬ chung hoch. Große Härtesprünge innerhalb der Walzenpanze¬ rung beim Übergang von den panzerschichten zu den Zwi¬ schenschichten sollen vermieden werden.The service life of the roller armor according to the invention is high even in the case of a dynamic pressure threshold stress. Large jumps in hardness within the roller armor during the transition from the armor layers to the intermediate layers should be avoided.
Ein Verfahren zum Aufbau der Walzenpanzerung ist erfin¬ dungsgemäß dadurch gekennzeichnet, daß die Zwischenschich¬ ten durch Unterpulver-Bandauftragsschweißung und die Pan¬ zerschichten durch Unterpulver-Füllbandauftragsschweißung aufgebracht werden. Beim Füllbandauftragsschweißen sind die Legierungsbestandteile in Pulverform in ein z. B. aus Reineisen bestehendes flaches Hohlband gefüllt und die eigentliche Legierung selbst entsteht erst beim Schwei߬ prozeß. Durch die Fullbandauftragsschweißung werden eine gleichmäßige Verteilung der Panzerwerkstofflegierung und ein gleichmäßiger Beschichtungsaufbau erreicht. According to the invention, a method for building up the roller armor is characterized in that the intermediate layers are applied by submerged-arc strip welding and the armored layers by submerged-arc filler coating welding. When filling filler welding, the alloy components are in powder form in a z. B. from Pure flat hollow band filled with pure iron and the actual alloy itself only arises during the welding process. The full band build-up welding ensures an even distribution of the armor material alloy and a uniform coating build-up.

Claims

Patentansprüche Claims
1. Verschleißfeste Oberflächenpanzerung für die Walzen von Walzenmaschinen, insbesondere von Hochdruck-Wal- zenpressen zur Druckzerkleinerung körnigen Gutes, dadurch gekennzeichnet, daß auf den Walzengrundkörper radial von innen nach außen gesehen mehrmals abwech¬ selnd eine duktile metallische Pufferschicht bzw. Zwischenschicht und eine harte verschleißfeste Pan¬ zerschicht aufgeschweißt sind.1. Wear-resistant surface armor for the rollers of roller machines, in particular high-pressure roller presses for pressure comminution of granular material, characterized in that, on the roller base body, a ductile metallic buffer layer or intermediate layer and a hard, wear-resistant layer alternate several times as seen radially from the inside to the outside Armored layer are welded on.
2. Walzenpanzerung nach Anspruch 1, dadurch gekennzeich¬ net, daß die zwischen den einzelnen Panzerschichten jeweils angeordnete Zwischenschicht jeweils aus einer einzigen Schweißlage besteht, während die Panzer¬ schichten jeweils aus mehreren Schweißlagen bestehen.2. Roll armor according to claim 1, characterized gekennzeich¬ net that the intermediate layer arranged between the individual armor layers each consist of a single welding layer, while the armor layers consist of several welding layers.
3. Walzenpanzerung nach Anspruch 2, dadurch gekennzeich¬ net, daß die Dicke der einlagigen Zwischenschicht in einem Bereich von z. B. 1 bis 6 mm liegt, während die Dicke der mehrlagigen, z. B. zwei- oder dreilagigen Panzerschicht etwa 8 bis etwa 15 mm beträgt.3. roll armor according to claim 2, characterized gekennzeich¬ net that the thickness of the single-layer intermediate layer in a range of z. B. is 1 to 6 mm, while the thickness of the multilayer, z. B. two- or three-layer armor layer is about 8 to about 15 mm.
4. Walzenpanzerung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Panzerschichten eine Härte von mehr als 52 HRC (Härteprüfung nach Rockwell C) und die Zwischenschichten eine Härte von mehr als etwa 20 bis etwa 45 HRC aufweisen. Walzenpanzerung nach einem der Ansprüche 1 bis 4, da¬ durch gekennzeichnet, daß die Panzerschichten aus einer metallischen Legierung mit Hartstoffen im Gefü¬ ge, z. B. Karbiden und/oder Sonderkarbiden und die Zwischenschichten aus einem ferritischen Werkstoff bestehen.4. Roll armor according to one of claims 1 to 3, characterized in that the armor layers have a hardness of more than 52 HRC (Rockwell C hardness test) and the intermediate layers have a hardness of more than about 20 to about 45 HRC. Roller armor according to one of claims 1 to 4, characterized in that the armor layers made of a metallic alloy with hard materials in the structure, for. B. carbides and / or special carbides and the intermediate layers consist of a ferritic material.
Verfahren zum Aufbau der Walzenpanzerung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Zwischenschichten durch ünterpulver-Bandauftrags- schweißung und die panzerschichten durch Unterpulver- Füllbandauftragsschweißung aufgebracht werden. Process for building up the roller armor according to one of claims 1 to 5, characterized in that the intermediate layers are applied by submerged-powder-band welding and the armored layers by submerged-powder-band application welding.
PCT/DE1989/000718 1988-12-22 1989-11-16 Abrasion-resistant steel cladding for the roller surfaces of roller machines, in particular high-pressure roller presses WO1990006811A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BR898907258A BR8907258A (en) 1988-12-22 1989-11-16 WEAR RESISTANT SURFACE SHIELDING FOR CRUSHING CYLINDERS, ESPECIALLY HIGH PRESSURE CYLINDER PRESSES
DK199690A DK199690D0 (en) 1988-12-22 1990-08-21 Wear-resistant surface armor for rollers, especially high pressure roller rollers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3843173.4 1988-12-22
DE3843173A DE3843173A1 (en) 1988-12-22 1988-12-22 WEAR-RESISTANT SURFACE ARMORING FOR THE ROLLS OF ROLLING MACHINES, IN PARTICULAR HIGH PRESSURE ROLLING PRESSES

Publications (1)

Publication Number Publication Date
WO1990006811A1 true WO1990006811A1 (en) 1990-06-28

Family

ID=6369804

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1989/000718 WO1990006811A1 (en) 1988-12-22 1989-11-16 Abrasion-resistant steel cladding for the roller surfaces of roller machines, in particular high-pressure roller presses

Country Status (8)

Country Link
EP (1) EP0402435A1 (en)
JP (1) JPH03502780A (en)
BR (1) BR8907258A (en)
DD (1) DD286304A5 (en)
DE (1) DE3843173A1 (en)
DK (1) DK199690D0 (en)
WO (1) WO1990006811A1 (en)
ZA (1) ZA899820B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113718175A (en) * 2021-09-02 2021-11-30 常熟市电力耐磨合金铸造有限公司 Metal ceramic inlaid composite roller

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4210395A1 (en) * 1992-03-30 1993-10-07 Krupp Polysius Ag Roller mill
DE4235297A1 (en) * 1992-10-20 1994-04-21 Krupp Polysius Ag Grinding roll mfr. by build-up welding - with the end regions of the hard anti-wear layer of the roll separated from its central region
DE4235298A1 (en) * 1992-10-20 1994-04-21 Krupp Polysius Ag Grinding roll mfr. by build-up welding of anti-wear layer - with the anti-wear layer made up of separate blocks
DE4235499A1 (en) * 1992-10-21 1994-04-28 Krupp Polysius Ag Applicn of hard wear-resistant layer onto a grinding roll - with pockets in the roll edge regions for retention of the material being ground.
DE4324074A1 (en) * 1993-07-17 1995-01-19 Kloeckner Humboldt Deutz Ag Wear-resistant surface armor for the rollers of high-pressure roller presses and method for building such a roller armor
DE4431563A1 (en) * 1994-09-05 1996-03-07 Kloeckner Humboldt Deutz Ag Wear-resistant surface armor for the rollers of high-pressure roller presses for pressure reduction of granular goods (documents for P 44 44 337.4 given)
DE19750144A1 (en) * 1997-11-12 1999-06-02 Krupp Polysius Ag Process for producing a grinding roller
DE102010061309B3 (en) * 2010-12-17 2012-05-24 Thyssenkrupp Polysius Ag Grinding roller of a roller mill

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE672400C (en) * 1937-06-07 1939-03-06 Arnold Locher Dr Coolable grinding roller
FR1183202A (en) * 1956-09-21 1959-07-03 United States Pipe Foundry Crushing cylinders and manufacturing process

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3302176A1 (en) * 1983-01-24 1984-07-26 Klöckner-Humboldt-Deutz AG, 5000 Köln METHOD AND SYSTEM FOR CONTINUOUS PRESSURE REDUCTION OF SPROEDEN GROUND MATERIAL
DE3926232A1 (en) * 1988-09-22 1990-03-29 Kloeckner Humboldt Deutz Ag WEAR-RESISTANT ROLL COATING FOR THE ROLLERS OF ROLLING PRESSES AND METHOD FOR CONSTRUCTING THE ROLLING COATING

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE672400C (en) * 1937-06-07 1939-03-06 Arnold Locher Dr Coolable grinding roller
FR1183202A (en) * 1956-09-21 1959-07-03 United States Pipe Foundry Crushing cylinders and manufacturing process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113718175A (en) * 2021-09-02 2021-11-30 常熟市电力耐磨合金铸造有限公司 Metal ceramic inlaid composite roller

Also Published As

Publication number Publication date
BR8907258A (en) 1991-03-12
JPH03502780A (en) 1991-06-27
DK199690A (en) 1990-08-21
DK199690D0 (en) 1990-08-21
DE3843173C2 (en) 1991-04-25
DD286304A5 (en) 1991-01-24
ZA899820B (en) 1990-09-26
DE3843173A1 (en) 1990-07-05
EP0402435A1 (en) 1990-12-19

Similar Documents

Publication Publication Date Title
DE4036040C2 (en) Wear-resistant surface armor for the rollers of roller machines, especially high-pressure roller presses
DE102009050636B4 (en) Grinding roller and ring bandage for a grinding roller
EP0563564B1 (en) Roller mill producing a bed of material
EP0699479B1 (en) Wear resistant roller for use in high pressure roller mills for pressure milling of granular material
EP1804973B1 (en) Press roller annular casing and method for production thereof
EP0728523B1 (en) Roller, method for manufacturing a roller, and material bed roller mill
WO1990006811A1 (en) Abrasion-resistant steel cladding for the roller surfaces of roller machines, in particular high-pressure roller presses
EP0418497A1 (en) Wear-resistant surface coating for rollers of roller mills, especially high pressure roller mills
EP0361172B1 (en) Wear-resistant roller coating for roller crushers, and method for building up said coating
EP0634217B1 (en) Procedure for the manufacture of a wear-resistant surface coating for rollers of high pressure roller mills
WO2008098951A1 (en) Armoring the surfaces of press rolls of rolling presses
DE102013104098A1 (en) Device for the comminution of abrasive materials
WO1990006178A1 (en) Non-wearing covering for the bearing surfaces of roller presses and a process for applying the covering
DD284611A5 (en) WEAR-RESISTANT ROLL COATING AND METHOD OF STRUCTURING ROLL COATING
DE10137131A1 (en) Roller for high pressure fluidized bed grinder has surface profiling with wear-resistant profiled bodies whose wear resistance matches stresses on rolling surface to achieve uniform wear over width of roller
DE19646030A1 (en) Wear-resistant surface armor for the rollers of high-pressure roller presses for pressure reduction of granular goods
EP0872280A2 (en) Wear-resistant surface coating for rollers of roller mills for pressure milling of granular material
DE4206004C2 (en) Continuous press for the production of chipboard, fibreboard, laminate board u. Like. And method for setting up the rolling surfaces on the press plates of such a press
DE4017183A1 (en) Wear resistant armouring for rolls - using rings with interlocking edge profile
DD271879A1 (en) ROLLER SEALING
DE102014006427A1 (en) Roller with wear protection layer for a roller press
CH695138A5 (en) Method and apparatus for sealing a gap between a roller end and one side seal on a roll strip casting machine.

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 1989912398

Country of ref document: EP

AK Designated states

Kind code of ref document: A1

Designated state(s): BR DK JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB IT LU NL SE

WWP Wipo information: published in national office

Ref document number: 1989912398

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1989912398

Country of ref document: EP