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GB2132924A - Polishing steel strip - Google Patents

Polishing steel strip Download PDF

Info

Publication number
GB2132924A
GB2132924A GB08400602A GB8400602A GB2132924A GB 2132924 A GB2132924 A GB 2132924A GB 08400602 A GB08400602 A GB 08400602A GB 8400602 A GB8400602 A GB 8400602A GB 2132924 A GB2132924 A GB 2132924A
Authority
GB
United Kingdom
Prior art keywords
polishing
wheel
segments
centre
elastomer
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.)
Withdrawn
Application number
GB08400602A
Other versions
GB8400602D0 (en
Inventor
Kenneth John Nichol
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
Priority claimed from GB838300614A external-priority patent/GB8300614D0/en
Application filed by Individual filed Critical Individual
Priority to GB08400602A priority Critical patent/GB2132924A/en
Publication of GB8400602D0 publication Critical patent/GB8400602D0/en
Publication of GB2132924A publication Critical patent/GB2132924A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • 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
    • B24D3/20—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 organic
    • B24D3/22—Rubbers synthetic or natural
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

Steel strip is polished by means of a polishing wheel of which the working surface 14 is provided by material constituted by particulate cork in a matrix of a nitrile rubber composition. The cork and the nitrile rubber are present in the polishing material in substantially equal proportions by volume. The wheel is constructed by bonding longitudinally- extending segments 10 of the polishing material to a cylindrical centre 12 and machining the segments to a cylindrical working surface 14. <IMAGE>

Description

SPECIFICATION Polishing wheels This invention is concerned with improvements in or relating to polishing wheels suitable for use in polishing steel or other materials.
Two kinds of polishing wheel are well known for use in polishing steel strip. A very traditional one comprises a large number of thin leather strips secured around a cylindrical wooden centre, the strips extending longitudinally of the centre. A more recently developed kind is one made up from a large number of thin rubber and canvas disks packed coaxially together to form a cylinder.
It is an object of this invention to provide an improved polishing wheel and in accordance with the invention in one of its aspects a polishing wheel comprises polishing material substantially constituted by particulate cork in a matrix of an elastomer.
In another of its aspects the invention provides a method of polishing a surface in which there is used a polishing wheel as called for in the last preceding paragraph. Such a method may be found especially suitable for polishing steel strip.
The elastomer is preferably a nitrile rubber composition.
We have found that good results can be achieved with a polishing material in which the cork and the elastomer are present in substantially equal proportions by volume.
There now follows a description, to be read with reference to the accompanying drawing, of construction and use of a polishing wheel which illustrate the invention by way of example.
The accompanying drawing is a view in transverse section of the polishing wheel.
The wheel is constructed by bonding a plurality of segments 10 of a polishing material to a cylindrical outer surface of a tubular centre 12. The segments extend longitudinally of the centre and are bonded by means of a cold curing epoxy resin adhesive. To provide a centre which is light and easy to bond to, it can be of a laminated filler-and-resin material such as that available in the U.K. under the proprietary trade name TUFNOL.
Having secured the segments 10 to the centre 12, end plates (not shown) are fitted and the segments machined to provide a truly cylindrical working surface 14.
In the illustrative wheel, eighteen segments 10 are bonded to a centre 12 which is 15 inch (38.1 cm) long and 7.75 inch (19.7 cm) outside diameter, and after machining the segments provide a working surface of 10 inch (25.4 cm) diameter.
Each of the segments 10 is cut from a sheet of material constituted by particulate cork in a matrix of an elastomer, the cork and the elastomer being present in substantially equal proportions by volume. The elastomer used in the illustrative wheel is a nitrile rubber composition (nominal specific gravity about 0.91) and the material, which is one commonly employed as a gasket material, has physical properties within the following specification: Shore Hardness (Type A) : 70 - 90" Minimum Tensile Strength 28 Kg/cm2 Compressibility at 28 Kg/cm2 15 - 25% Recovery : Around 75% In use of the illustrative wheel, the wheel is rotated about its axis at a speed within the range of 1000 to 1500 r.p.m. to polish steel strip which is passed across its working surface 14.
1. A polishing wheel comprising polishing material substantially constituted by particulate cork in a matrix of an elastomer.
2. A polishing wheel according to claim 1 in which the elastomer is a nitrile rubber composition.
3. A polishing wheel according to either of claims 1 and 2 in which the cork and the elastomer are present in substantially equal proportions by volume.
4. A polishing wheel according to any one of claims 1 to 3 in which said material has physical properties within the foilowing specification: Shore Hardness (Type A) : 70" - 90 Minimum Tensile Strength : 28 Kg/cm2 Compressibility at 28 Kg/cm2 15 - 25% Recovery : Around 75% 5. A polishing wheel according to any one of the preceding claims in which a plurality of segments of said material are bonded to a centre, said segments extending longitudinally of the centre.
6. A polishing wheel substantially as hereinbefore described with reference to the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (9)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Polishing wheels This invention is concerned with improvements in or relating to polishing wheels suitable for use in polishing steel or other materials. Two kinds of polishing wheel are well known for use in polishing steel strip. A very traditional one comprises a large number of thin leather strips secured around a cylindrical wooden centre, the strips extending longitudinally of the centre. A more recently developed kind is one made up from a large number of thin rubber and canvas disks packed coaxially together to form a cylinder. It is an object of this invention to provide an improved polishing wheel and in accordance with the invention in one of its aspects a polishing wheel comprises polishing material substantially constituted by particulate cork in a matrix of an elastomer. In another of its aspects the invention provides a method of polishing a surface in which there is used a polishing wheel as called for in the last preceding paragraph. Such a method may be found especially suitable for polishing steel strip. The elastomer is preferably a nitrile rubber composition. We have found that good results can be achieved with a polishing material in which the cork and the elastomer are present in substantially equal proportions by volume. There now follows a description, to be read with reference to the accompanying drawing, of construction and use of a polishing wheel which illustrate the invention by way of example. The accompanying drawing is a view in transverse section of the polishing wheel. The wheel is constructed by bonding a plurality of segments 10 of a polishing material to a cylindrical outer surface of a tubular centre 12. The segments extend longitudinally of the centre and are bonded by means of a cold curing epoxy resin adhesive. To provide a centre which is light and easy to bond to, it can be of a laminated filler-and-resin material such as that available in the U.K. under the proprietary trade name TUFNOL. Having secured the segments 10 to the centre 12, end plates (not shown) are fitted and the segments machined to provide a truly cylindrical working surface 14. In the illustrative wheel, eighteen segments 10 are bonded to a centre 12 which is 15 inch (38.1 cm) long and 7.75 inch (19.7 cm) outside diameter, and after machining the segments provide a working surface of 10 inch (25.4 cm) diameter. Each of the segments 10 is cut from a sheet of material constituted by particulate cork in a matrix of an elastomer, the cork and the elastomer being present in substantially equal proportions by volume. The elastomer used in the illustrative wheel is a nitrile rubber composition (nominal specific gravity about 0.91) and the material, which is one commonly employed as a gasket material, has physical properties within the following specification: Shore Hardness (Type A) : 70 - 90" Minimum Tensile Strength 28 Kg/cm2 Compressibility at 28 Kg/cm2 15 - 25% Recovery : Around 75% In use of the illustrative wheel, the wheel is rotated about its axis at a speed within the range of 1000 to 1500 r.p.m. to polish steel strip which is passed across its working surface 14. CLAIMS
1. A polishing wheel comprising polishing material substantially constituted by particulate cork in a matrix of an elastomer.
2. A polishing wheel according to claim 1 in which the elastomer is a nitrile rubber composition.
3. A polishing wheel according to either of claims 1 and 2 in which the cork and the elastomer are present in substantially equal proportions by volume.
4. A polishing wheel according to any one of claims 1 to 3 in which said material has physical properties within the foilowing specification: Shore Hardness (Type A) : 70" - 90 Minimum Tensile Strength : 28 Kg/cm2 Compressibility at 28 Kg/cm2 15 - 25% Recovery : Around 75%
5. A polishing wheel according to any one of the preceding claims in which a plurality of segments of said material are bonded to a centre, said segments extending longitudinally of the centre.
6. A polishing wheel substantially as hereinbefore described with reference to the accompanying drawing.
7. A method of polishing a surface in which there is used a polishing wheel as called for in any one of claims 1 to 6.
8. A method according to claim 7 in which the surface polished is of steel strip.
9. A method of polishing a surface which method is substantially as hereinbefore described with reference to the accompanying drawing.
GB08400602A 1983-01-11 1984-01-11 Polishing steel strip Withdrawn GB2132924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08400602A GB2132924A (en) 1983-01-11 1984-01-11 Polishing steel strip

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838300614A GB8300614D0 (en) 1983-01-11 1983-01-11 Polishing wheels
GB08400602A GB2132924A (en) 1983-01-11 1984-01-11 Polishing steel strip

Publications (2)

Publication Number Publication Date
GB8400602D0 GB8400602D0 (en) 1984-02-15
GB2132924A true GB2132924A (en) 1984-07-18

Family

ID=26284877

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08400602A Withdrawn GB2132924A (en) 1983-01-11 1984-01-11 Polishing steel strip

Country Status (1)

Country Link
GB (1) GB2132924A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1075424C (en) * 1997-10-21 2001-11-28 何志海 Composition and Application of Rubber Abrasives
EP1449620A1 (en) * 2003-01-27 2004-08-25 WPO Objekt- und Fachraumeinrichtungen GmbH Clamping device with clamping jaw

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB637904A (en) * 1948-03-31 1950-05-31 Internat Corrodeless Ltd Bobbing wheel
GB802297A (en) * 1956-08-27 1958-10-01 Carl Klingspor Improvements in or relating to grinding discs

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB637904A (en) * 1948-03-31 1950-05-31 Internat Corrodeless Ltd Bobbing wheel
GB802297A (en) * 1956-08-27 1958-10-01 Carl Klingspor Improvements in or relating to grinding discs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1075424C (en) * 1997-10-21 2001-11-28 何志海 Composition and Application of Rubber Abrasives
EP1449620A1 (en) * 2003-01-27 2004-08-25 WPO Objekt- und Fachraumeinrichtungen GmbH Clamping device with clamping jaw

Also Published As

Publication number Publication date
GB8400602D0 (en) 1984-02-15

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)