WO2005115662A1 - Multi shaped wear resistant plate - Google Patents

Multi shaped wear resistant plate Download PDF

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Publication number
WO2005115662A1
WO2005115662A1 PCT/AU2005/000750 AU2005000750W WO2005115662A1 WO 2005115662 A1 WO2005115662 A1 WO 2005115662A1 AU 2005000750 W AU2005000750 W AU 2005000750W WO 2005115662 A1 WO2005115662 A1 WO 2005115662A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
abrasive resistant
cast
grooves
abrasive
Prior art date
Application number
PCT/AU2005/000750
Other languages
French (fr)
Inventor
Stephen Kerr Davis
Joseph Ferencz
Jillian Gaye Werner
Original Assignee
Pac Mining Pty Ltd
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
Priority claimed from AU2004902846A external-priority patent/AU2004902846A0/en
Application filed by Pac Mining Pty Ltd filed Critical Pac Mining Pty Ltd
Priority to AU2005247519A priority Critical patent/AU2005247519B2/en
Publication of WO2005115662A1 publication Critical patent/WO2005115662A1/en

Links

Classifications

    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D25/00—Special casting characterised by the nature of the product
    • B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
    • 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
    • B32B15/011—Layered products comprising a layer of metal all layers being exclusively metallic all layers being formed of iron alloys or steels
    • 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
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G11/00—Chutes
    • B65G11/16—Interior surfaces; Linings
    • B65G11/166—Interior surfaces; Linings for bulk
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • 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
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/30—Iron, e.g. steel

Definitions

  • This invention relates to a wear resistant plate, more particularly to a wear resistant plate for use in the mining industry and the conveying, grading, screening of material and other high wear areas.
  • liners and shaped wear plates have to be fabricated into welded shapes or where a process involves the deposition of hard faced layers, using an automated welding process to form a hard wear resistant layer.
  • Bi-metallic abrasion resistant wear plates which rely on the combination of a cast, high alloy material which possesses the correct composition, a hardness value in excess of 700 Brinel and a micro-structure to achieve an extremely high hardness wear plate which is then vacuum bonded to steel backing plate for use in mining/construction industry for wear protection.
  • the casting process offers distinct advantages over the rolled processed plate and plates formed by automated weld overlay process.
  • a further object of the invention is to provide an abrasive resistant product being a laminate of a steel plate supporting a cast abrasive resistant layer, whereby the abrasive resistant product can be broken into desired shapes.
  • a still further object of the invention is to provide a cast abrasive resistant plate which can be broken into smaller abrasive resistant plates.
  • a method of providing abrasive resistant elements including the steps of producing an abrasive resistant plate, the plate having incorporated in the upper and lower surfaces means whereby the plate can be divided into desired shapes for incorporation in areas where the shape is required to provide an abrasive resistant surface.
  • Also there is provided a method of providing a repair to an area of a structure having an abrasive resistant material including the steps of removing the area to be repaired, providing an abrasive resistant plate having a cast abrasive surface bonded to a steel carrier plate, providing means to divide the plate into a shape required to repair the structure and attaching the shape to the structure.
  • an abrasive resistant plate marked into selected shapes by grooves on the upper and lower surfaces thereof whereby the plate can be divided into selected shapes by dividing the plate along selected grooves to produce the required shape of abrasive resistant material.
  • the abrasive resistant plate comprises a steel backing plate to which is bonded a cast plate of abrasive resistant material.
  • the abrasive resistant plate is provided with grooves on the cast plate opposite notches on the steel plate to facilitate separation into the predetermined shape.
  • the steel plate has notches opposite the grooves on the cast plate.
  • the steel plate has a profile slot cut into the steel plate opposite to the cast groove in the cast abrasive material along at least part of the length of the groove in the cast abrasive resistant cast plate.
  • Figure 1 is a plan and elevation view of one form of the invention
  • Figure 2 is a plan, elevation and reverse elevation view of a further form of the invention.
  • FIG. 3 shows a further form of the invention
  • FIG. 4 is still a further form of the invention.
  • Figure 5 shows further alternate shapes which may be produced.
  • the abrasive resistant member 1 is a laminate of abrasive resistant white iron 2 bonded to a mild steel plate 3. Grooves 4 are cast into the surface of the white iron and notches 5 are formed in the lower surface of the steel plate directly opposite the grooves 4.
  • the plate can be used in its entirety, or the plate can be broken into various shapes.
  • the triangular corner pieces can be broken off leaving the smaller centre square to be used.
  • the plate can be broken into eight triangular pieces, or again can be broken along a centre line to form two rectangular pieces.
  • the shape and layout of the cast grooves are critical in ensuring the plates will break and fracture cleanly.
  • the cast grooves also have the correspondingly matched machined or slotted or flame cut notch in the steel backing plate to ensure the plates break cleanly.
  • the plates are preferably welded to the metal structure to be protected by stitch welding the steel backing plate to the metal structure.
  • the stitch welding ensures that the steel backing plate does not become too hot which can be detrimental to the plate. Also the stitch weld should not touch the cast white iron. Additionally the plates can be attached by way of Arc Studs that are welded to the backing plate.
  • the cast-in groove size is determined by the plate size, plate thickness and the final shapes required.
  • the steel plate 3 is profile cut 6 opposite the grooves 4.
  • the profile cut 6 extends through the thickness of the steel plate 3, and terminates 7 adjacent the sides of the steel plate.
  • the cuts 6 which extend toward the centre of the plate also do not meet each other and terminate at 8. Thus when breaking or fracturing the plate the steel plate only has to be broken to the terminal portions 7 and 8.
  • Figure 3 is a further alternative of the plate of Figure 2, with the addition of pockets 9 positioned midway along the grooves 4 and the profile cuts 6 for additional weld to be added if desired.
  • the grooves 10 are closely spaced and extend across the cast iron from one side to the other to intersect the grooves extending at right angles across the cast iron plate thus resulting in a plurality of square pieces when broken.
  • the profile cuts opposite the grooves do not in all instances extend all the way across the steel plate.
  • the profile cuts 11 extend from adjacent one edge of the plate to adjacent the opposite edge.
  • the profile cuts 12 at right angles to the profile cuts 11 extend from alternate profile cuts 11 and terminate adjacent the profile cuts 11.
  • the plate can be broken into a number of smaller square pieces, or can be broken into a row of square abrasive members, or any desired arrangement of square abrasive members.
  • Figure 5 shows a range of alternate shapes into which the plate can be broken by appropriate grooves in the cast iron and corresponding notches or profile cuts in the steel plate.
  • profile cuts in some instances need not terminate adjacent the edges of the plate or at positions along the profile cut.
  • any flat shaped liner be it square, rectangular, triangular, circular, semi-circular, rounded, oblong can be achieved using cast-in notches, to suit customer needs.
  • the invention offers the client the opportunity to reduce inventory, equipment and labour required to process high abrasion resistant wear plates.
  • the plates will have a cast bevel on their edges to prevent chipping/spalling.
  • the grooves in the cast plate are V shaped to produce a bevel on the edges of the pieces when broken from the main plate.
  • the grooves do not extend through the thickness of the cast plate to ensure that the plate retains sufficient strength that it will not break with regular handling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

A wear or abrasion resistant plate which can be fractured to produce smaller abrasion resistant plates, the abrasion resistant plate comprising a cast white iron plate metallurgically attached to a mild steel plate, both the white cast iron plate and mild steel plate have grooves or notches in their surfaces opposite each other so that the larger plate can be fractured to produce smaller abrasion resistant plates either for initial use of repair.

Description

TITLE
MULTI SHAPED WEAR RESISTANT PLATE
TECHNICAL FIELD
This invention relates to a wear resistant plate, more particularly to a wear resistant plate for use in the mining industry and the conveying, grading, screening of material and other high wear areas.
BACKGROUND ART
Conventional wear resistant plates used in the mining and construction industries are made by hot rolling processes which limits the size of the plates to be used. That is plates are produced and sold in standard sheet sizes and then further processed by the steel distributor or end user. These plates are referred to as the family of AR plates (Abrasion Resistant).
This involves having to hold large stocks of various thicknesses, sizes etc, and then having staff, equipment to process the plates into suitable sizes for use as liners or shaped wear plates for final use into chutes, bins, hoppers, and any machinery that requires wear plate protection.
Metallurgy has advanced to the point where there are numerous high hardness, wear resistant plates on the market.
The same applies if liners and shaped wear plates have to be fabricated into welded shapes or where a process involves the deposition of hard faced layers, using an automated welding process to form a hard wear resistant layer.
These plates are referred to as the family of Cr/C (chrome/carbide) weld overlay plates.
Bi-metallic abrasion resistant wear plates are known which rely on the combination of a cast, high alloy material which possesses the correct composition, a hardness value in excess of 700 Brinel and a micro-structure to achieve an extremely high hardness wear plate which is then vacuum bonded to steel backing plate for use in mining/construction industry for wear protection.
Thermal cutting of many of these high resistant wear plates on the market requires a great deal of care and handling. Some degree of pre/post heating, to avoid cracking and ultimate premature failure of these liners cut from stock steel plates, is essential.
These plates invariably require special cutting processes such as oxy- aceylene, arc-air, plasma arc, high velocity abrasive water cutting, machining, slotting and saw cutting. All these processes require high equipment costs and skilled labour.
The casting process offers distinct advantages over the rolled processed plate and plates formed by automated weld overlay process.
DISCLOSURE OF THE INVENTION
It is an object of this invention to overcome one or more of the above problems by a method and product to provide smaller abrasive resistant products from a larger abrasive resistant product.
A further object of the invention is to provide an abrasive resistant product being a laminate of a steel plate supporting a cast abrasive resistant layer, whereby the abrasive resistant product can be broken into desired shapes.
A still further object of the invention is to provide a cast abrasive resistant plate which can be broken into smaller abrasive resistant plates.
Thus there is provided according to the invention a method of providing abrasive resistant elements including the steps of producing an abrasive resistant plate, the plate having incorporated in the upper and lower surfaces means whereby the plate can be divided into desired shapes for incorporation in areas where the shape is required to provide an abrasive resistant surface.
Also there is provided a method of providing a repair to an area of a structure having an abrasive resistant material including the steps of removing the area to be repaired, providing an abrasive resistant plate having a cast abrasive surface bonded to a steel carrier plate, providing means to divide the plate into a shape required to repair the structure and attaching the shape to the structure.
Also there is provided according to the invention an abrasive resistant plate marked into selected shapes by grooves on the upper and lower surfaces thereof whereby the plate can be divided into selected shapes by dividing the plate along selected grooves to produce the required shape of abrasive resistant material.
Preferably the abrasive resistant plate comprises a steel backing plate to which is bonded a cast plate of abrasive resistant material.
Preferably the abrasive resistant plate is provided with grooves on the cast plate opposite notches on the steel plate to facilitate separation into the predetermined shape.
Preferably the steel plate has notches opposite the grooves on the cast plate.
Preferably the steel plate has a profile slot cut into the steel plate opposite to the cast groove in the cast abrasive material along at least part of the length of the groove in the cast abrasive resistant cast plate.
BRIEF DESCRIPTION OF THE INVENTION
In order to more fully describe the invention, reference will now be made to the accompanying drawings in which :-
Figure 1 is a plan and elevation view of one form of the invention,
Figure 2 is a plan, elevation and reverse elevation view of a further form of the invention,
Figure 3 shows a further form of the invention,
Figure 4 is still a further form of the invention, and,
Figure 5 shows further alternate shapes which may be produced. BEST MODE FOR CARRYING OUT THE INVEN TION
Referring to Figure 1 the abrasive resistant member 1 is a laminate of abrasive resistant white iron 2 bonded to a mild steel plate 3. Grooves 4 are cast into the surface of the white iron and notches 5 are formed in the lower surface of the steel plate directly opposite the grooves 4.
The plate can be used in its entirety, or the plate can be broken into various shapes. Thus the triangular corner pieces can be broken off leaving the smaller centre square to be used. Alternately the plate can be broken into eight triangular pieces, or again can be broken along a centre line to form two rectangular pieces.
The shape and layout of the cast grooves are critical in ensuring the plates will break and fracture cleanly. The cast grooves also have the correspondingly matched machined or slotted or flame cut notch in the steel backing plate to ensure the plates break cleanly.
The plates are preferably welded to the metal structure to be protected by stitch welding the steel backing plate to the metal structure. The stitch welding ensures that the steel backing plate does not become too hot which can be detrimental to the plate. Also the stitch weld should not touch the cast white iron. Additionally the plates can be attached by way of Arc Studs that are welded to the backing plate.
The cast-in groove size is determined by the plate size, plate thickness and the final shapes required.
In Figure 2 the steel plate 3 is profile cut 6 opposite the grooves 4. The profile cut 6 extends through the thickness of the steel plate 3, and terminates 7 adjacent the sides of the steel plate. The cuts 6 which extend toward the centre of the plate also do not meet each other and terminate at 8. Thus when breaking or fracturing the plate the steel plate only has to be broken to the terminal portions 7 and 8.
Figure 3 is a further alternative of the plate of Figure 2, with the addition of pockets 9 positioned midway along the grooves 4 and the profile cuts 6 for additional weld to be added if desired. In Figure 4 the grooves 10 are closely spaced and extend across the cast iron from one side to the other to intersect the grooves extending at right angles across the cast iron plate thus resulting in a plurality of square pieces when broken. However the profile cuts opposite the grooves do not in all instances extend all the way across the steel plate. The profile cuts 11 extend from adjacent one edge of the plate to adjacent the opposite edge. However the profile cuts 12 at right angles to the profile cuts 11 extend from alternate profile cuts 11 and terminate adjacent the profile cuts 11. Thus in this way the plate can be broken into a number of smaller square pieces, or can be broken into a row of square abrasive members, or any desired arrangement of square abrasive members.
Figure 5 shows a range of alternate shapes into which the plate can be broken by appropriate grooves in the cast iron and corresponding notches or profile cuts in the steel plate.
In all instances while examples of the profile cuts have been described it is to be realised the profile cuts in some instances need not terminate adjacent the edges of the plate or at positions along the profile cut.
For any given size of cast wear plate (up to half a meter square) any flat shaped liner, be it square, rectangular, triangular, circular, semi-circular, rounded, oblong can be achieved using cast-in notches, to suit customer needs.
The invention offers the client the opportunity to reduce inventory, equipment and labour required to process high abrasion resistant wear plates.
As shown all the plates will have a cast bevel on their edges to prevent chipping/spalling. Thus the grooves in the cast plate are V shaped to produce a bevel on the edges of the pieces when broken from the main plate. However the grooves do not extend through the thickness of the cast plate to ensure that the plate retains sufficient strength that it will not break with regular handling.
Although various forms of the invention have been described in some detail, it is to be realised the invention is not to be limited thereto but can include variations and modifications falling within the spirit and scope of the invention.

Claims

1. An abrasive resistant main plate having an abrasive resistant member and an opposite backing member, a plurality of fracturing means on said abrasive resistant member, and corresponding fracturing means on said backing member opposite said fracturing means on said upper abrasive resistant member to provide smaller portions of abrasive resistant plates whereby the said abrasive resistant main plate may be fractured along one or more of the said fracturing means to provide one or more smaller abrasive resistant plates.
2. An abrasive resistant main plate as defined in claim 1 characterised in that the abrasive resistant member is a cast white iron plate and the backing member is a steel plate metallurgically bonded to the cast white iron plate.
3. An abrasive resistant main plate as defined in claim 2 characterised in that the fracturing means in the cast white iron plate is a groove or notch in the surface of the cast white iron plate.
4. An abrasive resistant main plate as defined in claim 2 characterised in that the fracturing means in the metal plate is a notch extending into the surface of the metal plate.
5. An abrasive resistant main plate as defined in claim 2 characterised in that the fracturing means in the metal plate is a cut extending into metal plate.
6 . An abrasive resistant main plate as defined in claim 2 characterised in that the fracturing means in the metal plate are cuts extending through the thickness of the metal plate.
7. An abrasive resistant main plate as defined in claim 3 characterised in that the grooves or notches in the cast white iron plate extend right across the surface of the cast white iron plate.
8. An abrasive resistant main plate as defined in claim 7 characterised in that the grooves or notches in the white cast iron plate have bevelled edges.
9. An abrasive resistant main plate as defined in claim 6 characterised in that the cuts terminate adjacent the edges of the main plate.
10. An abrasive resistant main plate as defined in claim 6 characterised in that where the cuts intersect, the cuts terminate adjacent the intersection.
11. An abrasive resistant main plate comprising a plate of cast white iron metallurgically bonded to a mild steel carrier plate, the white cast iron plate having a plurality of bevel edged grooves across the surface of the white cast iron plate to divide the surface into individual plates sections, the mild steel carrier plate having corresponding cuts or notches opposite the grooves on the cast white iron plate whereby the abrasive resistant main plate may be fractured along one or more of the grooves and cuts or notches to produce smaller individual abrasive resistant plates.
12 . An abrasive resistant main plate as defined in claim 11 wherein the cuts in the mild steel carrier plate extend through the thickness of the mild steel carrier plate and terminate adjacent the edges of the abrasive resistant main plate and also terminate adjacent the intersection of further cuts in the mild steel carrier plate.
13. A method of providing abrasive resistant plates of a shape for repair of an apparatus requiring repair of an abrasive resistant surface including the steps of providing a main abrasive resistant plate of a cast white iron plate metallurgically bonded to mild steel plate, the cast white iron plate having a plurality of bevelled grooves extending across its surface, the mild steel plate having a corresponding plurality of notches underlying the bevelled grooves, the method including the step of fracturing the main abrasive resistant plate into the desired shape abrasive resistant plate portion to repair the apparatus and then affixing the shaped abrasive resistant plate portion to the apparatus by welding or studs welded to the portion of the mild steel plate.
PCT/AU2005/000750 2004-05-28 2005-05-27 Multi shaped wear resistant plate WO2005115662A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2005247519A AU2005247519B2 (en) 2004-05-28 2005-05-27 Multi shaped wear resistant plate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2004902846A AU2004902846A0 (en) 2004-05-28 Multi shaped wear resistant plate
AU2004902846 2004-05-28

Publications (1)

Publication Number Publication Date
WO2005115662A1 true WO2005115662A1 (en) 2005-12-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2005/000750 WO2005115662A1 (en) 2004-05-28 2005-05-27 Multi shaped wear resistant plate

Country Status (2)

Country Link
AU (2) AU2005247519B2 (en)
WO (1) WO2005115662A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010102332A1 (en) * 2009-03-09 2010-09-16 Brian Investments Pty Ltd Wear plate
WO2018071976A1 (en) * 2016-10-21 2018-04-26 Wear Applications & Management Services Pty. Ltd. Wear assembly and method of forming a wear assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CL2016000259A1 (en) 2016-02-01 2016-09-23 Vita Nova Spa Articulated coating system for mining equipment and associated procedures.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2345263A1 (en) * 1976-03-23 1977-10-21 Wahl Verschleiss Tech Wear resistant plate for use on machines - has base plate formed with profiled grooves to hold wear resistant surface laid on top
GB2078575A (en) * 1980-06-23 1982-01-13 Sandvik Ab Weldable wear part with high wear resistance
GB2375103A (en) * 2001-05-02 2002-11-06 Chapmans Agricultural Ltd Individually Replaceable Wear Plate
AU2003261551A1 (en) * 2002-11-11 2004-05-27 Ware Products Pty Ltd Improvements relating to wear resistance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2345263A1 (en) * 1976-03-23 1977-10-21 Wahl Verschleiss Tech Wear resistant plate for use on machines - has base plate formed with profiled grooves to hold wear resistant surface laid on top
GB2078575A (en) * 1980-06-23 1982-01-13 Sandvik Ab Weldable wear part with high wear resistance
GB2375103A (en) * 2001-05-02 2002-11-06 Chapmans Agricultural Ltd Individually Replaceable Wear Plate
AU2003261551A1 (en) * 2002-11-11 2004-05-27 Ware Products Pty Ltd Improvements relating to wear resistance

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010102332A1 (en) * 2009-03-09 2010-09-16 Brian Investments Pty Ltd Wear plate
CN102438925A (en) * 2009-03-09 2012-05-02 布赖恩投资有限公司 Wear plate
WO2018071976A1 (en) * 2016-10-21 2018-04-26 Wear Applications & Management Services Pty. Ltd. Wear assembly and method of forming a wear assembly

Also Published As

Publication number Publication date
AU2005247519B2 (en) 2010-11-25
AU2005247519A1 (en) 2005-12-08
AU2011200813A1 (en) 2011-03-17

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