GB494300A - Improvements in or relating to methods of producing abrasive or wear-resistant articles - Google Patents

Improvements in or relating to methods of producing abrasive or wear-resistant articles

Info

Publication number
GB494300A
GB494300A GB1132137A GB1132137A GB494300A GB 494300 A GB494300 A GB 494300A GB 1132137 A GB1132137 A GB 1132137A GB 1132137 A GB1132137 A GB 1132137A GB 494300 A GB494300 A GB 494300A
Authority
GB
United Kingdom
Prior art keywords
metal
pressure
metal powder
borax
article
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
GB1132137A
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.)
Unifrax 1 LLC
Original Assignee
Carborundum Co
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 Carborundum Co filed Critical Carborundum Co
Priority to GB1132137A priority Critical patent/GB494300A/en
Publication of GB494300A publication Critical patent/GB494300A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
    • B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
    • B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
    • B24D3/08—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements for close-grained structure, e.g. using metal with low melting point

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

An article having a surface of a metal-bonded or wear-resistant material is produced by bringing together abrasive grains, a metal powder and a non-metallic fluxing agent for the metal and treating the metal powder to sinter it and cause it to bond the abrasive grains. Examples of the fluxing agent used are those containing borax, potassium acid fluoride boric oxide or potassium carbonate or a solution of borax and boric oxide may be used. The metal powder may be sintered under a low-pressure of 50-500 lb. per sq. in. As metal component of the mixture, copper nickel bronze, brass silver solder or metals of low melting point such as tin or lead may be used and the abrasive may comprise diamonds, silicon carbide, boron carbide or fused alumina. If the metal powder in the mixture comprises copper or nickel the flux used is borax or a solution containing borax and a water-soluble fluoride. In the production of the article, the solution of the flux, the metal powder and the abrasive grains are ultimately mixed together and the excess water removed by evaporation. The mixture either in a damp condition or in broken down granular form is introduced into a mould of the desired shape contained in an electrically heated chamber provided with means for applying pressure to the mould. Heat and pressure are now applied simultaneously, and for a mix containing only copper as the metal, a temperature of 750 DEG C. and a pressure of 50 lb. per sq. in. is necessary. The whole of the article may be made in this manner or only the surface, e.g. the surface of a metal wheel or grinding disc. In a modification, the metal and flux are mixed together and then a diamond or diamonds are inserted in the surface of the mix which forms a mounting for the diamond &c. before heat and pressure are applied.
GB1132137A 1937-04-20 1937-04-20 Improvements in or relating to methods of producing abrasive or wear-resistant articles Expired GB494300A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1132137A GB494300A (en) 1937-04-20 1937-04-20 Improvements in or relating to methods of producing abrasive or wear-resistant articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1132137A GB494300A (en) 1937-04-20 1937-04-20 Improvements in or relating to methods of producing abrasive or wear-resistant articles

Publications (1)

Publication Number Publication Date
GB494300A true GB494300A (en) 1938-10-20

Family

ID=9984109

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1132137A Expired GB494300A (en) 1937-04-20 1937-04-20 Improvements in or relating to methods of producing abrasive or wear-resistant articles

Country Status (1)

Country Link
GB (1) GB494300A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2999309A (en) * 1955-04-06 1961-09-12 Welded Carbide Tool Company In Composite metal article and method of producing
FR2457886A1 (en) * 1979-05-31 1980-12-26 Inst Prirodnykh Almazov I Powder mixt. for mfg. grinding tools - contains abrasive and metal binder, and flux mixt. employed to reduce sintering temp.
CN114472889A (en) * 2021-12-28 2022-05-13 苏州赛尔科技有限公司 Metal bond ultrathin super-precision cutting knife and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2999309A (en) * 1955-04-06 1961-09-12 Welded Carbide Tool Company In Composite metal article and method of producing
FR2457886A1 (en) * 1979-05-31 1980-12-26 Inst Prirodnykh Almazov I Powder mixt. for mfg. grinding tools - contains abrasive and metal binder, and flux mixt. employed to reduce sintering temp.
CN114472889A (en) * 2021-12-28 2022-05-13 苏州赛尔科技有限公司 Metal bond ultrathin super-precision cutting knife and preparation method thereof
CN114472889B (en) * 2021-12-28 2024-02-20 苏州赛尔科技有限公司 Ultra-thin superfinishing cutter with metal binding agent and preparation method

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