CN107262822B - The equidistant shape positioning of diamond is distributed the manufacture craft of full working lining ultrathin saw bit - Google Patents

The equidistant shape positioning of diamond is distributed the manufacture craft of full working lining ultrathin saw bit Download PDF

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Publication number
CN107262822B
CN107262822B CN201710540797.8A CN201710540797A CN107262822B CN 107262822 B CN107262822 B CN 107262822B CN 201710540797 A CN201710540797 A CN 201710540797A CN 107262822 B CN107262822 B CN 107262822B
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Prior art keywords
diamond
powder
distributed
working lining
carcass
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CN201710540797.8A
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CN107262822A (en
Inventor
张绍和
唐健
张昊旸
周侯
曲飞龙
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Central South University
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Central South University
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/02Circular saw blades
    • B22F1/0003
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02Compacting only
    • B22F3/03Press-moulding apparatus therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02Compacting only
    • B22F3/093Compacting only using vibrations or friction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12Both compacting and sintering
    • B22F3/14Both compacting and sintering simultaneously
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C26/00Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/001Cutting tools, earth boring or grinding tool other than table ware

Abstract

A kind of equidistant shape positioning of diamond is distributed full working lining ultrathin saw bit and its manufacture craft, the present invention directly form saw blade using powder metallurgically manufacturing method;10~800mm of saw blade diameter, 0.2~2.5mm of thickness, are made of carcass working lining and mounting hole, and carcass working lining selects metal powder and diamond is raw material;Distributed architecture is positioned using equidistant shape, by diamond particles heeling-in in carcass precalculated position;Cloth powder is vibrated using ultrasonic wave or other high-frequency shaking platforms in charging process, ensures carcass thickness uniformity, then be made through hot-pressing sintering technique.The equidistant shape positioning of diamond made of the present invention is distributed full working lining ultrathin saw bit, and diamond connection and reasonable arrangement, Use Limitation rate height, long lifespan, saw kerf is narrow, low energy consumption, is conducive to save resource and the energy.

Description

The equidistant shape positioning of diamond is distributed the manufacture craft of full working lining ultrathin saw bit
Technical field
The present invention principally falls into field of machining, using PM technique, is shaken using ultrasonic wave or other high-frequencies Flowing mode, implantation positioning distributed architecture diamond more particularly to the equidistant shape positioning of diamond are distributed full working lining ultrathin saw bit.
Background technology
In the making of conventional PCD saw blade, saw blade thickness is larger and materials are more, and diamond random distribution on saw blade is led Cause diamond that cannot play effect completely, the size that conventional PCD saw blade cuts seam in use is larger, be easy to cause It is wasted by cutting material, while Cutting Drag during the work time is also larger, energy consumption is high, efficiency is low and low precision, to limit Made diamond saw blade normal use, also limited the scope of application of diamond saw blade, hinder cutting processing technology into one Step development.
Invention content
It is distributed full working lining ultrathin saw bit the object of the present invention is to provide a kind of equidistant shape positioning of diamond and its makes work Skill.
Saw blade of the present invention is made of carcass working lining and mounting hole, a diameter of 10~800mm, and thickness is 0.2~2.5mm, Carcass working lining selects metal powder and diamond is raw material, and diamond heeling-in is positioned in carcass precalculated position using equidistant shape Several equidistant diamonds are distributed with around any one diamond in distributed architecture.The distance between diamond is by sawing Piece size and working lining diamond concentration determine, 0.1~5.0mm is divided between general.
The equidistant shape positioning of diamond is distributed full working lining ultrathin saw bit manufacture craft, direct using powder metallurgically manufacturing technology Saw blade is formed, is as follows:
The first step:Mold prepares
According to saw blade size, superior alloy steel design and processing cold stamping die are selected, wherein steel pressure head is to ensure diamond Distributed architecture is positioned in equidistant shape, is processed using laser engraving method or electric spark method;Bulk density is selected to be more than 1.85g/ cm3, high intensity high-purity high-density graphite of the compression strength more than 45MPa, design is processed and sintering mold;
Second step:Carcass powder mixes
Up-to-standard carcass metal powder is weighed, the wetting agent that volume fraction is 30% to 80% is added and is mixed equal It is even, obtain uniformly mixed carcass metal powder mixture;
Third walks:It is die-filling to vibrate cloth powder
Uniformly mixed carcass metal powder mixture is weighed, loading is placed on ultrasonic wave or other high-frequency shaking platforms On cold stamping die in, start ultrasonic wave or other high-frequency shaking platforms and vibrate 0.5~10 minute, vibration frequency 800Hz To 100000Hz, after assembling steel pressure head, moves to extrusion forming on forcing press and obtain superthin section green compact;
4th step:Diamond positioning distribution
The superthin section green compact being press-formed using the steel pressure head taken out from punching block, green compact there are meet diamond in etc. Diamond particles, are placed in hole using mounting method is smeared, are made and contain diamond particles by the placement hole that distributed architecture is positioned away from shape Ultrathin saw bit green compact;
5th step:Powder metallurgy pressure sintering manufactures
It is assembled in the ultrathin saw bit green compact containing diamond particles in graphite jig, is placed in saw blade sintering furnace, first passes through Temperature-pressure, temperature are stepped up to 900 DEG C to 980 DEG C, and pressure gradually adds to 25KN to 40KN, are then cooled to 700 DEG C extremely 790 DEG C, it is depressurized to 15KN to 25KN, carries out heat-insulation pressure keeping 2 minutes to 8 minutes, completes hot-pressing flow;
6th step:Cooling and demolding
It will complete sintering process and the graphite jig after cooling equipped with sintered saw bits take out out of sintering furnace, and demould It is distributed full working lining ultrathin saw bit blank to the equidistant shape positioning of diamond;
7th step:Reconditioning is put the first edge on a knife or a pair of scissors
The equidistant shape positioning of diamond is distributed full working lining ultrathin saw bit blank, processing on grinding machine is flat on and polishes saw blade two A plane;Then its monolithic or multi-disc are mounted on saw blade blade grinding machine, carry out end face and puts the first edge on a knife or a pair of scissors;
8th step:Decoration packaging
The equidistant shape positioning of diamond after surface rubbing and end face are put the first edge on a knife or a pair of scissors is distributed full working lining ultrathin saw bit, carries out appearance Processing, carries out decoration packaging.
Containing cobalt powder, nickel powder, iron powder, titanium valve, chromium powder, copper powder, glass putty in carcass metal powder described in step 2;Wherein: Cobalt powder, nickel powder, iron powder, titanium valve and chromium powder respectively account for the 2%~80% of gross mass;Copper powder and glass putty respectively account for gross mass 3%~ 60%;Powder diameter used is 0.075mm or less.
Vibration cloth powder described in step 3 is die-filling, and steel alloy grinding tool is placed on ultrasonic wave when cloth powder is die-filling or other are high Vibrated 1~8 minute on frequency shaking platform, vibration frequency be 20000Hz to 80000Hz, shaking platform using ultrasonic wave or its He generates exciting force by high-frequency vibration source.
Diamond positioning distribution described in step 4, the diamond volume a concentration of 2%~60% used, grain size are 0.04~1.0mm, diamond particles plant the precalculated position in carcass by equidistant shape positioning distributed architecture, and precalculated position is to utilize Laser engraving method or the steel pressure head of electric spark method processing cold moudling, pre-determined bit is determined with the concave-convex hole position on steel pressure head surface It sets, the pit of cold moudling green compact is diamond particles implantation position, and diamond particles are placed in hole using mounting method is smeared It is interior.
The equidistant shape positioning of diamond of the present invention is distributed being mainly characterized by for full working lining ultrathin saw bit:Diamond is implanted into position The effect of setting and abandon conventional random distribution form, and executing equidistant shape positioning distributed architecture, given full play to diamond;It uses Ultrasonic wave or other high-frequencies vibration cloth powder means are conducive to the homogenization of powder;Using powder metallurgy pressure sintering of the present invention Temperature and pressure technique under make ultrathin saw bit, the performance indicator of ultrathin saw bit can be reached;Saw blade uses alloy-free steel matrix Full working lining extend service life;Saw blade thickness is much smaller than conventional saw blade thickness, substantially increases in 0.2~2.5mm Cutting-rate.
Description of the drawings
Fig. 1 is that the equidistant shape of diamond of the present invention positions distribution schematic diagram.
Specific implementation mode
Embodiment 1
Diamond equidistant shape positioning is distributed full working lining ultrathin saw bit, saw blade diameter of phi 30mm, thickness 0.3mm, mounting hole Φ 10mm, carcass metal powder prescription quality ratio:Cobalt powder -55%, nickel powder -10%, iron powder -5%, titanium valve -2%, chromium powder - 3%, copper powder -20%, glass putty -5%, powder size are 325 mesh (45 microns) with thin;Diamond volume a concentration of 2%, granularity For 80/100 mesh (150-178 microns).
Its fabrication processing is:
1. Alloy-steel mold, steel alloy pressure head and graphite jig processing.
2. wetting agent and diamond particles that carcass metal powder batch mixing, volume fraction are 50%.
3. the carcass metal powder mixed is packed into Alloy-steel mold, it is placed on ultrasonic activation platform and vibrates 1 point Clock, vibration frequency 30000Hz.
It pressurizes 4. the Alloy-steel mold after vibration uniformly is moved on forcing press, takes out green compact, smear and paste diamond Then green compact is assembled into graphite jig by grain in the hole for accordingly positioning distributed architecture in equidistant shape, the equidistant shape of diamond is fixed Bit distribution structure is as shown in Figure 1.
5. the graphite jig for installing saw blade cold pressing base is put into intermediate frequency furnace and heats pressure sintering, temperature is heated to 970 DEG C, it is forced into 35KN, then carries out heat-insulation pressure keeping work, holding temperature is 790 DEG C, dwell pressure 25KN, and soaking time is 2.5 minutes, reach thermal requirements, demoulding is taken out after being gone with furnace cooling.
6. the saw blade blank that sintering is completed is lain in finishing two plane of rubbing down on grinding machine.
7. the saw blade blank for modifying complete two plane of rubbing down is carried out end face using blade grinding machine to put the first edge on a knife or a pair of scissors.
8. the saw blade cleaning treatment after the completion of putting the first edge on a knife or a pair of scissors and packed for standby use of painting.
Embodiment 2
Diamond equidistant shape positioning is distributed full working lining ultrathin saw bit, saw blade diameter of phi 300mm, thickness 1.2mm, mounting hole Φ 20mm, carcass metal powder prescription quality ratio:Cobalt powder -65%, nickel powder -5%, iron powder -5%, titanium valve -2%, chromium powder - 3%, copper powder -15%, glass putty -5%, powder size are 325 mesh (45 microns) with thin;Diamond volume a concentration of 5%, granularity For 40/80 mesh (180-380 microns).
Its fabrication processing is:
1. Alloy-steel mold, steel alloy pressure head and graphite jig processing.
2. wetting agent and diamond particles that carcass metal powder batch mixing, volume fraction are 50%.
3. the carcass metal powder mixed is packed into Alloy-steel mold, it is placed on ultrasonic activation platform and vibrates 2 points Clock, vibration frequency 30000Hz.
It pressurizes 4. the Alloy-steel mold after vibration uniformly is moved on forcing press, takes out green compact, smear and paste diamond Then green compact is assembled in graphite jig by grain in the hole for accordingly positioning distributed architecture in equidistant shape.
5. the graphite jig for installing saw blade cold pressing base is put into intermediate frequency furnace and heats pressure sintering, temperature is heated to 970 DEG C, it is forced into 35KN, then carries out heat-insulation pressure keeping work, holding temperature is 790 DEG C, dwell pressure 25KN, and soaking time is 3.5 minutes, reach thermal requirements, demoulding is taken out after being gone with furnace cooling.
6. the saw blade blank that sintering is completed is lain in finishing two plane of rubbing down on grinding machine.
7. the saw blade blank for modifying complete two plane of rubbing down is carried out end face using blade grinding machine to put the first edge on a knife or a pair of scissors.
8. the saw blade cleaning treatment after the completion of putting the first edge on a knife or a pair of scissors and packed for standby use of painting.

Claims (4)

1. a kind of equidistant shape positioning of diamond is distributed the manufacture craft of full working lining ultrathin saw bit, full working lining ultrathin saw bit is by tire Body running layer and mounting hole composition, a diameter of 10~800mm, thickness are 0.2~2.5mm, and diamond heeling-in is pre-positioned in carcass It sets, is positioned and be distributed using equidistant shape, is i.e. several equidistant diamonds, feature is distributed with around any one diamond It is:Saw blade is directly formed using powder metallurgically manufacturing technology, is as follows:
The first step:Mold prepares
According to saw blade size, select superior alloy steel design and processing cold stamping die, wherein steel pressure head be ensure diamond in etc. Distributed architecture is positioned away from shape, is processed using laser engraving method or electric spark method;Bulk density is selected to be more than 1.85g/cm3, Compression strength is more than the high intensity high-purity high-density graphite of 45MPa, design processing and sintering mold;
Second step:Carcass powder mixes
Up-to-standard carcass metal powder is weighed, the wetting agent that volume fraction is 30% to 80% is added and is uniformly mixed, is obtained To uniformly mixed carcass metal powder mixture;
Third walks:It is die-filling to vibrate cloth powder
Uniformly mixed carcass metal powder mixture is weighed, loading is placed on ultrasonic wave or other high-frequency shaking platforms In cold stamping die, start ultrasonic wave or other high-frequency shaking platforms and vibrate 0.5~10 minute, vibration frequency be 800Hz extremely 100000Hz after assembling steel pressure head, moves to extrusion forming on forcing press and obtains superthin section green compact;
4th step:Diamond positioning distribution
The superthin section green compact being press-formed using the steel pressure head taken out from punching block, green compact are in equidistant shape there are diamond is met Diamond particles are placed in pit by the pit for positioning distributed architecture using mounting method is smeared, and are made super containing diamond particles Thin saw blade green compact;
5th step:Powder metallurgy pressure sintering manufactures
It is assembled in the ultrathin saw bit green compact containing diamond particles in graphite jig, is placed in saw blade sintering furnace, first passes through heating Pressurization, temperature are stepped up to 900 DEG C to 980 DEG C, and pressure gradually adds to 25KN to 40KN, is then cooled to 700 DEG C to 790 DEG C, it is depressurized to 15KN to 25KN, carries out heat-insulation pressure keeping 2 minutes to 8 minutes, completes hot-pressing flow;
6th step:Cooling and demolding
It will complete sintering process and the graphite jig after cooling equipped with sintered saw bits take out out of sintering furnace, and demould and obtain gold The equidistant shape positioning of hard rock is distributed full working lining ultrathin saw bit blank;
7th step:Reconditioning is put the first edge on a knife or a pair of scissors
Diamond equidistant shape positioning is distributed full working lining ultrathin saw bit blank, being flat on processing on grinding machine, to polish saw blade two flat Face;Then its monolithic or multi-disc are mounted on saw blade blade grinding machine, carry out end face and puts the first edge on a knife or a pair of scissors;
8th step:Decoration packaging
The equidistant shape positioning of diamond after surface rubbing and end face are put the first edge on a knife or a pair of scissors is distributed full working lining ultrathin saw bit, carries out at appearance Reason, carries out decoration packaging.
2. the equidistant shape positioning of diamond according to claim 1 is distributed the manufacture craft of full working lining ultrathin saw bit, special Sign is:Carcass metal powder described in step 2 is cobalt powder, nickel powder, iron powder, titanium valve, chromium powder, copper powder and glass putty;Wherein:Cobalt Powder, nickel powder, iron powder, titanium valve and chromium powder respectively account for the 2%~80% of gross mass;Copper powder and glass putty respectively account for the 3%~60% of gross mass; Powder diameter used is 0.075mm or less.
3. the equidistant shape positioning of diamond according to claim 1 is distributed the manufacture craft of full working lining ultrathin saw bit, special Sign is:Vibration cloth powder described in step 3 is die-filling, and steel alloy grinding tool is placed on ultrasonic wave when cloth powder is die-filling or other are high Vibrated 1~8 minute on frequency shaking platform, vibration frequency be 20000Hz to 80000Hz, shaking platform using ultrasonic wave or its He generates exciting force by high-frequency vibration source.
4. the equidistant shape positioning of diamond according to claim 1 is distributed the manufacture craft of full working lining ultrathin saw bit, special Sign is:Diamond positioning distribution described in step 4, the diamond volume a concentration of 2%~60% used, grain size are 0.04~1.0mm, diamond particles plant the precalculated position in carcass by equidistant shape positioning distributed architecture, and precalculated position is to utilize Laser engraving method or the steel pressure head of electric spark method processing cold moudling, pre-determined bit is determined with the concave-convex hole position on steel pressure head surface Set, the pit of cold moudling green compact is diamond particles implantation position, using smear mounting method diamond particles are placed in it is recessed In hole.
CN201710540797.8A 2017-07-05 2017-07-05 The equidistant shape positioning of diamond is distributed the manufacture craft of full working lining ultrathin saw bit Active CN107262822B (en)

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CN111570802B (en) * 2020-05-27 2021-08-20 中南大学 3D printing manufacturing process of ultrathin metal-based diamond cutting blade
CN115229193B (en) * 2022-07-21 2023-04-07 北京爱克瑞特金刚石工具有限公司 Preparation method and application of full-powder saw blade

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US7124753B2 (en) * 1997-04-04 2006-10-24 Chien-Min Sung Brazed diamond tools and methods for making the same
US20040112359A1 (en) * 1997-04-04 2004-06-17 Chien-Min Sung Brazed diamond tools and methods for making the same
CN101376234B (en) * 2007-08-28 2013-05-29 侯家祥 Ordered arrangement method for abrading agent granule on abrading tool and abrading tool
CN101637821A (en) * 2008-07-28 2010-02-03 丹阳华昌钻石工具制造有限公司 Diamond orderly-arranged ultra-thin cold-rolled sintered tablet
CN201415444Y (en) * 2009-04-17 2010-03-03 上海钻圣和新材料科技有限公司 Cutter head with orderly arranged diamonds
CN101745877B (en) * 2009-12-16 2011-08-24 南京航空航天大学 Diamond grinding material sequential arraying system and method
CN202006517U (en) * 2010-07-06 2011-10-12 上海晶泉工贸有限公司 Caking type diamond cutting blade
CN102198641B (en) * 2011-05-12 2013-05-01 沈阳理工大学 Super-hard abrasive grinding wheel with head face having abrasives in phyllotaxis arrangement and production method thereof
CN103056450A (en) * 2011-10-22 2013-04-24 湖南飞越新材料科技有限责任公司 Manufacture method evenly distributing and orderly arranging diamond saw blades

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