WO1991008080A1 - Manufacturing process for diamond saw capable of high speed cutting - Google Patents

Manufacturing process for diamond saw capable of high speed cutting Download PDF

Info

Publication number
WO1991008080A1
WO1991008080A1 PCT/KR1990/000020 KR9000020W WO9108080A1 WO 1991008080 A1 WO1991008080 A1 WO 1991008080A1 KR 9000020 W KR9000020 W KR 9000020W WO 9108080 A1 WO9108080 A1 WO 9108080A1
Authority
WO
WIPO (PCT)
Prior art keywords
diamond
saw
steel sheet
blade portion
saw blade
Prior art date
Application number
PCT/KR1990/000020
Other languages
French (fr)
Inventor
Kyong Yang Cho
Original Assignee
Kyong Yang Cho
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 Kyong Yang Cho filed Critical Kyong Yang Cho
Publication of WO1991008080A1 publication Critical patent/WO1991008080A1/en

Links

Classifications

    • 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
    • B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D65/00—Making tools for sawing machines or sawing devices for use in cutting any kind of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P5/00—Setting gems or the like on metal parts, e.g. diamonds on tools
    • 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
    • B24D5/12—Cut-off wheels

Definitions

  • the present invention relates to a manufacturing process for a diamond saw which is capable of cutting at a high speed various articles such as gems, ferrites, stones, ceramics and the like. Background of the invention
  • Diamond saw is classified into two kinds, and one of them is manufactured by electro-depositing diamond powders on the surface of a steel sheet, while the other of them is manufactured by applying the metal bonding method. More specifically, the latter is manufactured in such a manne*- that: diamond powders and metal alloy powders are mixed together in a certain ratio; the mixture is out. into a cold rolling mould in order to carry out a high pressure molding; a sintering is carried out at a temperature of 800 - 900°C; and then, a dressing is carried out so as for the diamond powders to be projected.
  • Further metal alloy powders used in the metal bonding method include ccpper- base alloy or cobalt-base alloy powders.
  • the above described electro-deposi ed or metal bonding type saws are also classified into circular saws and band type saws depending on their shapes.
  • T e ⁇ iamonc saws which are manufactured by electro-depositing diamond powders on the surface of a steel sheet are somewhat fast in their cutting speed, and precise in their cutting quality, but their life expectancy is very short. These saws are used to cut low strength articles and gems.
  • the metal bonding type saws are mostly large saws and are used to cut stones, concretes and the like.
  • the saw blade is very thick, and therefore, when an article is cut, the material loss is very large. Further, due to the large thickness of the saw blade, the contacting surface between the saw blade and the object to be cut is very large in the relative terms so as for the cutting load to be very large, thereby making it impossible to cut at a high speed, and deteriorating the work efficiency and the productivity. Summary of the invention The present invention is intendec to overcome the above described disadvantages of the conventional diamond saws. Therefore it is an object of the present invention to provide a diamond saw in which onl two tyoes having only different sizes are mass-produced, and the thickness of the saw blade is kept to the minimum, so that the diamond saw can be universally applied, and that the life expect ⁇ ancy of the saw should be extended. It is another object of the present invention to provide a diamond saw in which the material loss is minimized and the productivity is improved by applying the universally usable and thin blade diamond saw in cutting various articles.
  • the diamond saw according to the present invention is manufactured in such a manner that: an adhesive is spread on a steel sheet; diamond powders with or without metal coating are uniformly spread; it is put into a mould; and a heating at a high pressure is carried out so as for the diamond particles to be buried into the semi-melted steel sheet.
  • the diamond powers are buried sufficiently into the steel sheet, it is cooled so that the steel sheet should securely hold the diamond particles owing to the contracting phenomenon occurring during the cooling, thereby making the diamond particles buried firmly into the steel sheet.
  • Figure 1 is a longitudinal sectional view showing the pressed state of the mould used in tne manufactur e ng process according to the present invention
  • Figure 2 is a longitudinal sectional view showing anothe*" embodiment of the pressing of the mould used in tne manu- facturing process according to the present invention
  • -igure 3 is a longitudinal sectional view of the diamond- saw manufactured according to the process of the present invention.
  • Liquid paraffine 7 is thinly spread on the surface of a saw blade portion 2 of a saw 1; diamond powders 3,3' with metal coating are uniformly spread thereupon; the saw blade portion 2 is placed into forming recesses 5,5' of mutually facing moulds 4,4'; the mutually facing moulds 4,4' are mutually pressed; under a high vacuum, a heating is carried out using a high-frequency furnace to heat to a temperature of 870 - 1200°C for 1- 30 seconds the portions of the moulds 4,4' where the saw blade portion 2 is placed; and in this state, upon arriving of a semi-melted state between the solidus line and the liquidu ⁇ line, about three-fourths of the particles of the diamond pow ⁇ ders 3,3' are buried into the steel sheet of the saw blade portion 2, here the liquid paraffine being burnt off by the high temperature.
  • Liquid paraffine 7 is thinly spread on the surface 5,5' of the molding recesses 5,5' of the moulds 4,4' where the saw blade portion 2 of the saw 1 is to be placed; diamond powders 3,3'without metal coating are uniformly spread thereupon; the saw blade portion 2 of the saw is placed into the molding recesses 5,5' of the mutually facing moulds 4,4'; the mutually facing moulds 4,4' are mutually pressed; in an atmosphere consisting of a reduction gas, a heating is carried out using a high-frequency furnace to heat to a temperature of 870 - 1200°C for 1 - 30 seconds the portions of the moulds 4,4' where the saw blade por ⁇ tion 2 is placed; and in this state, upon arriving of a semi-melted state between the solidus line and the liqui- du ⁇ line, about three-fourth of the particles of the diamond powders 3,3' are buried into the steel sheet o ⁇ the saw blade portion 2, here the adhesive 7 being burnt off by the high temperature.
  • the solvent has to be completely removed by raising the temperature after spreading the diamond powders 3,3'.
  • the diamond powders can be used mixed with alloyed metal powders in a proper ratio, and depending on the selected material of the moulds 4,4', an electric arc may be used in place of the high frequency.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

A manufacturing process for diamond saw capable of high speed cutting is disclosed, and the process includes: step of spreading an adhesive on the surface of a saw blade portion of a saw made of steel sheet; step of spreading diamond powders thereon; step of placing the saw blade portion into molding recesses of moulds; step of heating the moulds and the saw blade portion to a temperature of 870 - 1200 °C for 1 - 30 seconds in an atmosphere consisting of a high vacuum or a reduction gas; step of letting the diamond powders buried into the steel sheet; and step of carrying out a cooling so as for the buried diamond powders to be more firmly held. According to the present invention, the material loss is inhibited, and the productivity is improved.

Description

Description Title of the invention MANUFACTURING PROCESS FOR DIAMOND SAW CAPABLE OF HIGH SPEED CUTTING Field of the invention
The present invention relates to a manufacturing process for a diamond saw which is capable of cutting at a high speed various articles such as gems, ferrites, stones, ceramics and the like. Background of the invention
Diamond saw is classified into two kinds, and one of them is manufactured by electro-depositing diamond powders on the surface of a steel sheet, while the other of them is manufactured by applying the metal bonding method. More specifically, the latter is manufactured in such a manne*- that: diamond powders and metal alloy powders are mixed together in a certain ratio; the mixture is out. into a cold rolling mould in order to carry out a high pressure molding; a sintering is carried out at a temperature of 800 - 900°C; and then, a dressing is carried out so as for the diamond powders to be projected. Further metal alloy powders used in the metal bonding method include ccpper- base alloy or cobalt-base alloy powders. The above described electro-deposi ed or metal bonding type saws are also classified into circular saws and band type saws depending on their shapes. T e αiamonc saws which are manufactured by electro-depositing diamond powders on the surface of a steel sheet are somewhat fast in their cutting speed, and precise in their cutting quality, but their life expectancy is very short. These saws are used to cut low strength articles and gems. The metal bonding type saws are mostly large saws and are used to cut stones, concretes and the like.
Therefore, such conventional diamond saws have to be selectively used depending on the objects to be cut, such as gems, ferrites, semiconductors, glasses, ceramics, stones and the like, such a proper selection of the saw being a troublesome task.
Further, the saw blade is very thick, and therefore, when an article is cut, the material loss is very large. Further, due to the large thickness of the saw blade, the contacting surface between the saw blade and the object to be cut is very large in the relative terms so as for the cutting load to be very large, thereby making it impossible to cut at a high speed, and deteriorating the work efficiency and the productivity. Summary of the invention The present invention is intendec to overcome the above described disadvantages of the conventional diamond saws. Therefore it is an object of the present invention to provide a diamond saw in which onl two tyoes having only different sizes are mass-produced, and the thickness of the saw blade is kept to the minimum, so that the diamond saw can be universally applied, and that the life expect¬ ancy of the saw should be extended. It is another object of the present invention to provide a diamond saw in which the material loss is minimized and the productivity is improved by applying the universally usable and thin blade diamond saw in cutting various articles.
In achieving the above objects, the diamond saw according to the present invention is manufactured in such a manner that: an adhesive is spread on a steel sheet; diamond powders with or without metal coating are uniformly spread; it is put into a mould; and a heating at a high pressure is carried out so as for the diamond particles to be buried into the semi-melted steel sheet. When the diamond powers are buried sufficiently into the steel sheet, it is cooled so that the steel sheet should securely hold the diamond particles owing to the contracting phenomenon occurring during the cooling, thereby making the diamond particles buried firmly into the steel sheet. Brief description of the drawings
The above object and other advantages of the present invention will become more apparent by describing in detail the preferred embodiment of the present invention with reference to the attached drawings in which: Figure 1 is a longitudinal sectional view showing the pressed state of the mould used in tne manufactureng process according to the present invention; Figure 2 is a longitudinal sectional view showing anothe*" embodiment of the pressing of the mould used in tne manu- facturing process according to the present invention: and -igure 3 is a longitudinal sectional view of the diamond- saw manufactured according to the process of the present invention. Description of the preferreα embodiment Example 1
Liquid paraffine 7 is thinly spread on the surface of a saw blade portion 2 of a saw 1; diamond powders 3,3' with metal coating are uniformly spread thereupon; the saw blade portion 2 is placed into forming recesses 5,5' of mutually facing moulds 4,4'; the mutually facing moulds 4,4' are mutually pressed; under a high vacuum, a heating is carried out using a high-frequency furnace to heat to a temperature of 870 - 1200°C for 1- 30 seconds the portions of the moulds 4,4' where the saw blade portion 2 is placed; and in this state, upon arriving of a semi-melted state between the solidus line and the liquiduε line, about three-fourths of the particles of the diamond pow¬ ders 3,3' are buried into the steel sheet of the saw blade portion 2, here the liquid paraffine being burnt off by the high temperature.
When the diamond particles are sufficiently buried into the steel sheet, the heating is stopped, and cooled in a pressed state to the normal temperature. Under this condition, owing to the contracting phenomenon during the cooling, the diamond particles are firmly held in the steel sheet, and in this state, if the mould 4,4' are separated, a finished product 6 can be obtained.
Example 2
Liquid paraffine 7 is thinly spread on the surface 5,5' of the molding recesses 5,5' of the moulds 4,4' where the saw blade portion 2 of the saw 1 is to be placed; diamond powders 3,3'without metal coating are uniformly spread thereupon; the saw blade portion 2 of the saw is placed into the molding recesses 5,5' of the mutually facing moulds 4,4'; the mutually facing moulds 4,4' are mutually pressed; in an atmosphere consisting of a reduction gas, a heating is carried out using a high-frequency furnace to heat to a temperature of 870 - 1200°C for 1 - 30 seconds the portions of the moulds 4,4' where the saw blade por¬ tion 2 is placed; and in this state, upon arriving of a semi-melted state between the solidus line and the liqui- duε line, about three-fourth of the particles of the diamond powders 3,3' are buried into the steel sheet o~ the saw blade portion 2, here the adhesive 7 being burnt off by the high temperature.
When the diamond particles are sufficiently buried into the steel sheet, the heating is stopped, and a cooling is carried out in a pressed state until the normal tempera¬ ture is attained. Thus, owing to the contracting phe¬ nomenon occurring outing the cooling, tne diamond particles are firmly buried into the steel sheet, and in this state, if the moulds 4,4' are separatee, a finished product 6 is obtained. In the diamond saw manufactured according t,o the above described embodiments of the present invention, there are no detachments of the particles because the diamond particles are firmly buried into the steel sheet owing to the contracting phenomenon occurring during the cooling. Further, the saw blade portion 2 which press-formed in the molding recesses 5,5' by pressing the moulds 5,5' has a uniform thickness, and also its surface state is very uniform, so that there should be required no additional finishing work, and that the product can be αirectly used. As the material for the moulds 4,4' cf the present inven¬ tion, a ceramic, a carbon or a heat resistant steel can be used. As the adhesive for securing the diamond pow¬ ders, paraffine, PVA, CMC, sodium alginate and the like having adhesive property can be used. When a solution of these materials is spreaded on the surfaces of the molding recesses 5,5' of the moulds 4,4', the solvent has to be completely removed by raising the temperature after spreading the diamond powders 3,3'. The diamond powders can be used mixed with alloyed metal powders in a proper ratio, and depending on the selected material of the moulds 4,4', an electric arc may be used in place of the high frequency.
The diamond saw according to the present inventicr is classified into two kinds according to the type of the application. Of the two kinds, the diamond saw which is for cutting gems and uses the particle size of 325 - 400 meshes can be manufactured down to the thickness of 0.07mm (c*. the conventional electro-deposited saw: 0.45 - 0.5 mm), while the diamond saw which is for cutting stones and uses the particle size of 30 - 45 meshes can be manufac¬ tured down to the thickness of 1.5 mm (cf. the convention- al metal saw: 11 mm). Therefore, the diamond saw accord¬ ing to the present invention can be manufactured in a thickness equivalent to 1/7 that of the conventional electro-deposition or metal bonding saws. According to the present invention as described above, the adhesion between the diamond powders and the steel sheet is very firm, and the attainable thickness is very thin.
Therefore, the material loss can be inhibited, and the productivity can be improved by increasing the cutting efficiency.

Claims

What is claimed is :
1. A manufacturing process for a diamond saw capable of high speed cuttings, comprising: step of spreading an adhesive on the surface of a saw blade portion of a saw made of a steel sheet; step of uniformly spreading diamond powders thereupon; step of placing said saw blade portion into molding recesses of mutually facing moulds; step of heating said moulds and said saw blade portion to a tem¬ perature of 870 - 1200°C fo1- 1 - 30 seconds in an atmosphere consisting of a high vacuum or a reduction gas; step of letting said diamond powders buried into said steel sheet under a semi-melted state between the solidus line and the liquidus line; step of stopping the heating in a state with said diamond powders buried into said steel sheet; and step of carrying out a cooling so as for said diamond powders to be firmly buried in saic steel sheet owing to the contracting phenomenon occurring during the cooling.
2. The manufacturing process for a diamond saw capable of high speed cuttings as claimed in claim 1, wherein said adhesive is spread on said molding recesses of saic moulds; and said diamond powders are spread on said spread adhesive so as for said diamond powders to be buriec into said saw blade portion of said saw.
PCT/KR1990/000020 1989-11-25 1990-11-22 Manufacturing process for diamond saw capable of high speed cutting WO1991008080A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1989/17171 1989-11-25
KR1019890017171A KR910008246B1 (en) 1989-11-25 1989-11-25 Method for manufacturing diamond saw

Publications (1)

Publication Number Publication Date
WO1991008080A1 true WO1991008080A1 (en) 1991-06-13

Family

ID=19292058

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR1990/000020 WO1991008080A1 (en) 1989-11-25 1990-11-22 Manufacturing process for diamond saw capable of high speed cutting

Country Status (2)

Country Link
KR (1) KR910008246B1 (en)
WO (1) WO1991008080A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744247A1 (en) * 1995-05-22 1996-11-27 Tyrolit Schleifmittelwerke Swarovski KG Grinding tool, especially cutting-off tool and method of manufacturing such a tool
CN104668923A (en) * 2015-02-05 2015-06-03 深圳市誉和钻石工具有限公司 Manufacturing method of diamond cutter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100426843B1 (en) * 2000-11-13 2004-04-13 박인순 Method and apparatus for manufacturing cutting blades, and a cutting blade manufactured by the same
KR100472376B1 (en) * 2002-05-24 2005-03-08 주식회사 백광소재 Bacillus amyloliquefaciens LX 9 and method for culturing thereof
KR100477165B1 (en) * 2002-05-25 2005-03-17 박용균 Isolation of Bacillus licheniformis having antifungal activities against phytopathogens and determination of condition for producing antifungal substance

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2361492A (en) * 1942-10-01 1944-10-31 Rca Corp Diamond saw and method of making the same
DE1254936B (en) * 1962-02-21 1967-11-23 Remington Arms Co Inc Process for producing a hard, wear-resistant coating on metal objects
FR2298405A1 (en) * 1975-01-27 1976-08-20 Held Gerhard Cementing hard carbide particles to substrates - using slag or alloy binder, applying by flame spraying on a tacky surface and fusing binder
DE3216456A1 (en) * 1982-05-03 1983-11-03 Robert Bosch Gmbh, 7000 Stuttgart METHOD FOR Embedding Hard Materials In The Surface Of Chip Removal Tools

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2361492A (en) * 1942-10-01 1944-10-31 Rca Corp Diamond saw and method of making the same
DE1254936B (en) * 1962-02-21 1967-11-23 Remington Arms Co Inc Process for producing a hard, wear-resistant coating on metal objects
FR2298405A1 (en) * 1975-01-27 1976-08-20 Held Gerhard Cementing hard carbide particles to substrates - using slag or alloy binder, applying by flame spraying on a tacky surface and fusing binder
DE3216456A1 (en) * 1982-05-03 1983-11-03 Robert Bosch Gmbh, 7000 Stuttgart METHOD FOR Embedding Hard Materials In The Surface Of Chip Removal Tools

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744247A1 (en) * 1995-05-22 1996-11-27 Tyrolit Schleifmittelwerke Swarovski KG Grinding tool, especially cutting-off tool and method of manufacturing such a tool
CN104668923A (en) * 2015-02-05 2015-06-03 深圳市誉和钻石工具有限公司 Manufacturing method of diamond cutter

Also Published As

Publication number Publication date
KR910008246B1 (en) 1991-10-12
KR910009383A (en) 1991-06-28

Similar Documents

Publication Publication Date Title
JP4287301B2 (en) Patterned abrasive material and method for producing the same
EP0101259B1 (en) Abrasive bodies
US4496372A (en) Abrasive bodies
EP0090657B1 (en) A method of making abrasive bodies
US4735656A (en) Abrasive material, especially for turbine blade tips
RU2210488C2 (en) Sintered diamond blank and method for making it
US5186380A (en) Titanium hydride coated brazing product
KR930010150B1 (en) Abrasive surface coating process for superalloys
JPH09510148A (en) Method of manufacturing segmented diamond blade
CA2322421A1 (en) Superabrasive wire saw and method for making the saw
US5718736A (en) Porous ultrafine grinder
KR100322785B1 (en) Method for manufacturing joint body
US3868750A (en) Method of joining diamond to metal
WO1991008080A1 (en) Manufacturing process for diamond saw capable of high speed cutting
CA1247046A (en) Method of bonding ceramic article
US3856480A (en) Diamond joined to metal
EP0397515B1 (en) Wire drawing die
JPH0215977A (en) Diamond grindstone and manufacture thereof
CA1086509A (en) Diamonds and cubic boron nitride bonded by ag-mn-zr alloy to metal supports
EP0636445B1 (en) Brazing
JP2000025030A (en) Ceramics substrate and its production
CN114952638A (en) Ceramic CBN grinding wheel and self-centering bonding method thereof
JPH03261671A (en) Bonding method of diamond for machining tool
JPH02237759A (en) Cutter and manufacture thereof
JPS62143871A (en) Metal transfer or adhesion preventing tool

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): BR CA JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE

WR Later publication of a revised version of an international search report
NENP Non-entry into the national phase

Ref country code: CA