GB1227793A - - Google Patents

Info

Publication number
GB1227793A
GB1227793A GB1227793DA GB1227793A GB 1227793 A GB1227793 A GB 1227793A GB 1227793D A GB1227793D A GB 1227793DA GB 1227793 A GB1227793 A GB 1227793A
Authority
GB
United Kingdom
Prior art keywords
abrasive particles
wheel
graphite
carbon
carbonizing
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
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 filed Critical
Publication of GB1227793A publication Critical patent/GB1227793A/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
    • B24D3/344—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 the bonding agent being organic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H5/00—Combined machining
    • B23H5/06—Electrochemical machining combined with mechanical working, e.g. grinding or honing
    • B23H5/08—Electrolytic grinding

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

1,227,793. Electrolytic grinding. FORDATH Ltd. April 10, 1969 [April 11, 1968], No.17471/68. Heading C7B. [Also in Division C4] A conductive workpiece is electrolytically ground using a conductive grinding wheel of a carbon matrix containing abrasive particles, e.g. of SiC, metal (e.g. W) carbide or alumina. A dressing tool may be maintained in contact with the operative surface of the wheel by a servomechanism. The wheel may be made by coating, preferably separately, graphite and abrasive particles with a thermosetting e.g. phenolformaldehyde novolac resin, moulding to the required shape under heat and pressure e.g. at 140- 180‹C. and 1000-2000psi, and then carbonizing the resin e.g. at 770-850‹C. in a non-oxidizing atmosphere such as nitrogen. Subsequent to carbonizing, a hydrocarbon e.g. benzene may be cracked to deposit carbon in the matrix pores and form a carbon skeleton bonding together the graphite and abrasive particles. The wheel preferably includes an inner drive-shaft mounting portion not containing abrasive particles, and an outer operative portion containing the bonded mixture of graphite and abrasive particles, made simultaneously using a mould containing a partition. Specification 1,222,651 is referred to.
GB1227793D 1968-04-11 1968-04-11 Expired GB1227793A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1747168 1968-04-11

Publications (1)

Publication Number Publication Date
GB1227793A true GB1227793A (en) 1971-04-07

Family

ID=10095756

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1227793D Expired GB1227793A (en) 1968-04-11 1968-04-11

Country Status (2)

Country Link
FR (1) FR2038351A1 (en)
GB (1) GB1227793A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4405421A (en) 1980-02-22 1983-09-20 Inoue-Japax Research Incorporated Method of and apparatus for electrochemically grinding a conductive workpiece

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2070064B (en) * 1980-02-22 1983-12-14 Inoue Japax Res Electrochemical grinding electrode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4405421A (en) 1980-02-22 1983-09-20 Inoue-Japax Research Incorporated Method of and apparatus for electrochemically grinding a conductive workpiece

Also Published As

Publication number Publication date
FR2038351A1 (en) 1971-01-08

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee