GB570805A - Improvements in or relating to the production of abrasive tools - Google Patents

Improvements in or relating to the production of abrasive tools

Info

Publication number
GB570805A
GB570805A GB676543A GB676543A GB570805A GB 570805 A GB570805 A GB 570805A GB 676543 A GB676543 A GB 676543A GB 676543 A GB676543 A GB 676543A GB 570805 A GB570805 A GB 570805A
Authority
GB
United Kingdom
Prior art keywords
carbide
aluminium
mixture
boron
carbides
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
GB676543A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB676543A priority Critical patent/GB570805A/en
Publication of GB570805A publication Critical patent/GB570805A/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
    • B24D3/02—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

Abstract

Abrasive tools and slabs are made by incorporating diamond dust or fragments in a bonding agent which functions as a secondary abrasive, consisting of a mixture of boron carbide and silicon carbide together with at least one metallic carbide chosen from the carbides of nickel, aluminium, chromium, tungsten, molybdenum, zirconium and titanium. In a preferred method, a mixture of silicon carbide, boron carbide and aluminium oxide is heated in a reducing atmosphere to sintering temperature, thus converting the aluminium oxide to carbide. This mixture is cooled, crushed, graded and then mixed with diamond dust, the bonding agent being present in at least four times the volume of the diamond. This powder is then placed in the lower part of a mould of circular cross-section and a disc-like carrier of a soft metal such as aluminium is placed thereon, the underside of the carrier being fitted with a plurality of keys as described in Specification 559,785, [Group XXIII]. The whole is heated to 800 DEG C. to melt the metal and then allowed to cool in a press at about 1 ton per sq. inch. The Provisional Specification describes also the use of a bond comprising the carbides of iron, or the oxides of boron, silicon or aluminium.
GB676543A 1943-04-29 1943-04-29 Improvements in or relating to the production of abrasive tools Expired GB570805A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB676543A GB570805A (en) 1943-04-29 1943-04-29 Improvements in or relating to the production of abrasive tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB676543A GB570805A (en) 1943-04-29 1943-04-29 Improvements in or relating to the production of abrasive tools

Publications (1)

Publication Number Publication Date
GB570805A true GB570805A (en) 1945-07-24

Family

ID=9820345

Family Applications (1)

Application Number Title Priority Date Filing Date
GB676543A Expired GB570805A (en) 1943-04-29 1943-04-29 Improvements in or relating to the production of abrasive tools

Country Status (1)

Country Link
GB (1) GB570805A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799912A (en) * 1950-12-18 1957-07-23 Greger Herbert Hans Processes for forming high temperature ceramic articles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799912A (en) * 1950-12-18 1957-07-23 Greger Herbert Hans Processes for forming high temperature ceramic articles

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