Claims
- 1. A throw shoe for centrifugal-type crushers which comprises:a body formed of an iron-based alloy and having a working face wherein said working face is exposed to contact with material to be crushed; a composite reinforcement structure formed on said working face, said composite reinforcement structure being solid cast with said body, wherein said composite reinforcement structure comprises a wear-resistant ceramic material infiltrated by the same iron-based alloy as that of said body, wherein said composite reinforcement material is flush with the working face, wherein said composite reinforcement structure is tailored to be located around the periphery of at least one pocket that is to be formed on said working face by abrasion resulting from contact with the material to be crushed during service, wherein the at least one pocket is configured to hold the crushed material in a manner such that the crushed material provides reinforcement to the throw shoe.
- 2. Throw shoe according to claim 1, wherein said composite reinforcing structure is tailored to the number, the size and the geometrical shape of the at least one pocket.
- 3. Throw shoe according to claim 1, wherein the ceramic material constituting the reinforcing structure is produced from ceramic particles based on alumina-zirconia agglomerated by a binding agent.
- 4. Throw shoe according to claim 1 wherein composite reinforcing structure is located at a minimum distance of 5 mm from the edge of the at least one pocket.
- 5. A method for producing a throw shoe having an integral reinforcement structure comprising the steps of:placing a wear-resistant ceramic material in a mold; performing a casting operation wherein said wear-resistant ceramic material is infiltrated by a liquid iron-based alloy and simultaneously, in situ, solid cast with a casting material so as to form an integral structure comprising of a throw shoe having a body and a working surface, wherein the working surface is exposed to contact with material to be crushed, wherein selected areas of the body and the working surface are reinforced by the wear-resistant ceramic material, wherein the wear-resistant ceramic material is tailored to be located around the periphery of at least one pocket that is to be formed on said working surface by abrasion resulting from contact with the material to be crushed during service, wherein the at least one pocket is configured to hold the crushed material in a manner such that the crushed material provides reinforcement to the throw shoe.
- 6. A method for producing a throw shoe having at least one pocket defined by a plurality of walls, comprising the steps of:placing ceramic particles agglomerated by a binding agent on the bottom of a mold according to a specific pattern in relationship to the walls of the at least one pocket; placing at least one core to provide at least one cavity for casting; performing a casting operation wherein said ceramic particles are infiltrated by a liquid iron-based alloy and simultaneously, in situ, solid cast with a casting material so as to form an integral structure comprising of a throw shoe having a body and a working surface wherein selected areas of the body and working surface are reinforced by the wear-resistant ceramic material, wherein the wear-resistant material is tailored to be located around the periphery of the at least one pocket, wherein the at least one pocket is configured to hold the crushed material in a manner such that the crushed material provides reinforcement to the throw shoe.
- 7. Method for producing the throw shoe of claim 6 wherein placing the ceramic particles according to a specific pattern in relationship to the walls of the at least one pocket comprises placing the ceramic particles according to the specific pattern in relationship to the walls of the at least one pocket that will be formed on the working surface by abrasion resulting from contact with the material to be crushed during service.
- 8. A throw shoe for a centrifugal-type crushing apparatus, comprising:a body designed to project material to be crushed laterally outward, wherein the body has a working face that is exposed to contact with material to be crushed; an integral reinforcement structure wherein said reinforcement structure comprises a wear-resistant composite material wherein said composite material, being solid cast with the body, is integrated into selected areas of the body during formation of the throw shoe, wherein said composite material is integrated into said working face so as to reinforce said working face and protect said working face from abrasions caused by the material to be crushed, wherein said composite material is tailored to be located around the periphery of at least one pocket that is to be formed on said working face by abrasion resulting from contact with the material to be crushed during service, wherein the at least one pocket is configured to hold the crushed material in a manner such that the crushed material provides reinforcement to the throw shoe.
- 9. The throw shoe of claim 8 wherein said body comprises an iron-based alloy and said reinforcement structure comprises a wear-resistant ceramic material, infiltrated by the iron-based alloy.
- 10. The throw shoe of claim 9 wherein said ceramic material comprises a alumina based material agglomerated by a binding agent.
- 11. The throw shoe of claim 8 wherein the throw shoe is designed for centrifugal-type crushers with a vertical shaft of the VSI-type.
- 12. A method of forming a throw shoe for a crushing apparatus, the method comprises:placing a wear-resistant ceramic material in a mold wherein the ceramic material is positioned to reinforce the periphery of a pocket region that is to be formed on the throw shoe; infiltrating the ceramic material with an iron-based alloy so as to form a composite material; performing a casting operation wherein the ceramic material is solid cast with additional iron-based alloy so as to form a throw shoe having an integrally formed reinforcement region around the periphery of the pocket region wherein the reinforcement region comprises of the composite material.
- 13. The method of claim 12 wherein placing the ceramic material in the mold comprises placing a zirconia-based material agglomerated in a binding agent.
- 14. The method of claim 12 wherein performing the casting operation further comprises placing a core into the mold so as to provide a cavity in the casting wherein the cavity forms the pocket region of the throw shoe.
- 15. The method of claim 12 wherein the pocket region is to be formed by abrasion resulting from contact with the material to be crushed during service.
- 16. A throw shoe for centrifugal-type crushers comprising:a body formed of an iron-based alloy having a working face wherein said working face is exposed to contact with material to be crushed; a non-reinforced zone on the working surface, wherein at least one pocket is to be formed in the non-reinforced zone by abrasion resulting from contact with the material to be crushed during service; a reinforced zone on the working surface, wherein the reinforced zone is flush with the working surface; wherein the reinforced zone comprises a composite reinforcement structure being solid cast with said body, wherein said composite reinforcement structure comprises a wear-resistant ceramic material infiltrated by the same iron-based alloy as that of said body; wherein the reinforced zone is configured to be positioned on the periphery of the at least one pocket, wherein the at least one pocket is configured to hold the crushed material in a manner such that the crushed material provides reinforcement to the throw shoe.
- 17. The throw shoe of claim 16 wherein the reinforced zone is tailored to the number, the size and the geometrical shape of the at least one pocket.
- 18. The throw shoe of claim 16 wherein the composite reinforcement structure comprises ceramic particles based on alumina-zirconia agglomerated by a binding agent.
Parent Case Info
This is a continuation under 35 U.S.C. §371 of International Application PCT/BE99/00034, filed Mar. 16, 1999.
US Referenced Citations (6)
Foreign Referenced Citations (2)
Number |
Date |
Country |
WO 8404760 |
Dec 1984 |
WO |
WO 8904720 |
Jun 1989 |
WO |
Continuations (1)
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Number |
Date |
Country |
Parent |
PCT/BE99/00034 |
Mar 1999 |
US |
Child |
09/663244 |
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US |