GB1329730A - Grinding media - Google Patents

Grinding media

Info

Publication number
GB1329730A
GB1329730A GB4617570A GB4617570A GB1329730A GB 1329730 A GB1329730 A GB 1329730A GB 4617570 A GB4617570 A GB 4617570A GB 4617570 A GB4617570 A GB 4617570A GB 1329730 A GB1329730 A GB 1329730A
Authority
GB
United Kingdom
Prior art keywords
particles
preform
abrasive
binder
glass frit
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
GB4617570A
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.)
Ducommun Inc
Original Assignee
Ducommun Inc
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 Ducommun Inc filed Critical Ducommun Inc
Publication of GB1329730A publication Critical patent/GB1329730A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/524—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from polymer precursors, e.g. glass-like carbon material
    • 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
    • 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
    • B24D3/10—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 porous or cellular structure, e.g. for use with diamonds as abrasives
    • 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
    • B24D3/14—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 ceramic, i.e. vitrified bondings
    • B24D3/18—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 ceramic, i.e. vitrified bondings for porous or cellular structure

Abstract

1329730 Porous grinding media DOCOMMUN Inc 29 Sept 1970 [9 Feb 1970] 46175/70 Heading C4V Porous composite products comprising abrasive or refractory particles coated with pyrolytic carbon in a matrix comprising pyrolytic carbon, are made by (a) forming a preform comprising said particles and a green binder (b) initially heating the preform to dehydrate or partially burn away the binder and leave a carbon or other inorganic skeleton and subsequently raising the temperature to complete pyrolysis and (c) maintaining a temperature in the presence of a carbonaceous gas sufficient to encapsulate said particles in pyrolytic carbon. Specified green binders are (i) vitreous material, e.g. a mixture of clay, steatite and as a flux feldspar, lead glass frit, phosphorus glass frit or boric oxide glass frit, which may also contain dextrose; (ii) other inorganic material, e.g. hydraulic setting cement, sodium silicate, phosphorus oxyacids with or without alumina, zirconium phosphate and calcium aluminates, and (iii) organic materials e.g. dextrin, liquid starch, mucilage, ureaformaldehyde, epoxy or phenolic resins, furfural alcohol, mono- or di-saccharides, starches, ligneous liquors, albumens, polysaccharide gums or ethyl silicate. A wax emulsion may be added as a pressing mould release agent. In addition the preform may contain as a graphitization catalyst ferrosilicon, titanium, iron or nickel and may then be heated to 2372-3092‹ F. following step (c) to effect graphitization. Porosity may be controlled by the addition of walnut shell, polystyrene or sawdust particles which burn away. Specified abrasive materials are alumina, silicon carbide, diamond, garnet, silica, ruby, borolon or fused alumina, beryllia, nitrides and carbides. The initial abrasive particles may be mixed wet or dry with the binder, cast, extruded or pressed into shape and air dried at less than 200‹ F. with or without humidity before oven drying at up to 375‹ F. to give the required porosity. Dehydration or carbonizing in step (b) may be at 400-900‹ F. and step (c) at 1900-2300‹ F. The pores of the finished product are interconnected and may be from 1/ 5 the size of the abrasive particles to greater than their size; exemplary preforms have a density of 0.9-2.1 g./c.c. and final products from 1.7-2.6 g./c.c.
GB4617570A 1970-02-09 1970-09-29 Grinding media Expired GB1329730A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US991770A 1970-02-09 1970-02-09

Publications (1)

Publication Number Publication Date
GB1329730A true GB1329730A (en) 1973-09-12

Family

ID=21740475

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4617570A Expired GB1329730A (en) 1970-02-09 1970-09-29 Grinding media

Country Status (4)

Country Link
JP (1) JPS498995B1 (en)
DE (1) DE2046677A1 (en)
FR (1) FR2090447A5 (en)
GB (1) GB1329730A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2380846A1 (en) * 1978-02-16 1978-09-15 Gen Electric Porous cutting tools - made by bonding diamond or cubic boron nitride with metal which is then removed by etching to form the pores
CN114714264A (en) * 2022-04-22 2022-07-08 昆山耐信金刚石工具有限公司 Superhard CBN (cubic boron nitride) ceramic grinding wheel and preparation method thereof
CN117226083A (en) * 2023-11-14 2023-12-15 山西昊业新材料开发有限公司 Long nozzle for continuous casting and preparation method thereof

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0211247A3 (en) * 1985-07-31 1987-05-27 Techno-Keramik GmbH Fine-grinding tool for the treatment of metallic, glass or ceramic work pieces
JPS63143493U (en) * 1987-03-12 1988-09-21
JP3018388B2 (en) * 1990-04-05 2000-03-13 日産化学工業株式会社 Method for producing porous vitrified grinding wheel
CN102079109A (en) * 2010-11-27 2011-06-01 常州华中集团有限公司 Diamond saw blade and machining process thereof
CN113998685B (en) * 2022-01-05 2022-05-06 浙江艺科科技有限公司 Preparation method of porous foam carbon material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2380846A1 (en) * 1978-02-16 1978-09-15 Gen Electric Porous cutting tools - made by bonding diamond or cubic boron nitride with metal which is then removed by etching to form the pores
CN114714264A (en) * 2022-04-22 2022-07-08 昆山耐信金刚石工具有限公司 Superhard CBN (cubic boron nitride) ceramic grinding wheel and preparation method thereof
CN114714264B (en) * 2022-04-22 2024-03-19 昆山耐信金刚石工具有限公司 Superhard CBN ceramic grinding wheel and preparation method thereof
CN117226083A (en) * 2023-11-14 2023-12-15 山西昊业新材料开发有限公司 Long nozzle for continuous casting and preparation method thereof
CN117226083B (en) * 2023-11-14 2024-01-26 山西昊业新材料开发有限公司 Long nozzle for continuous casting and preparation method thereof

Also Published As

Publication number Publication date
JPS498995B1 (en) 1974-03-01
DE2046677A1 (en) 1971-08-19
FR2090447A5 (en) 1972-01-14

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees