CN103551576A - Method for preparing cubic boron nitride agglomeration tool - Google Patents
Method for preparing cubic boron nitride agglomeration tool Download PDFInfo
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- CN103551576A CN103551576A CN201310529172.3A CN201310529172A CN103551576A CN 103551576 A CN103551576 A CN 103551576A CN 201310529172 A CN201310529172 A CN 201310529172A CN 103551576 A CN103551576 A CN 103551576A
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- boron nitride
- cubic boron
- joint piece
- briquetting
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Abstract
The invention discloses a method for preparing a cubic boron nitride agglomeration tool. The method comprises the following steps of selecting metal powder which is fully and uniformly mixed through a ball mill, wherein the metal powder contains 40 to 70 mole percent of Ni, 10 to 30 mole percent of Al, 5 to 10 mole percent of Cr, 10 to 25 mole percent of Ti, 5 to 15 mole percent of Co and 0.05 to 1 mole percent of rare earth Ce alloy; uniformly mixing the metal powder and cubic boron nitride with the concentration of 20 to 150 percent; performing compression molding through a mold to obtain agglomerated briquettes; after constant-temperature treatment, inducing the agglomerated briquettes to perform self-propagating reaction through laser to prepare cubic boron nitride agglomerates, and polishing, processing and assembling the agglomerates to obtain various types of cubic boron nitride agglomeration tools. The method has the advantages of high selection region heating speed and high reaction speed; the prepared cubic boron nitride agglomerates have excellent carcass mechanical performance; a carcass transition layer with excellent chemical metallurgy bonding performance is formed on the surface of the cubic boron nitride; an abrasive material is high in holding force, the agglomerates are long in service life, and the production efficiency is high.
Description
Technical field
The present invention relates to a kind of preparation method of super hard abrasive instrument, relate in particular to a kind of method that laser-induced self-propagating reaction vacuum is prepared cubic boron nitride joint piece instrument.
Background technology
Cubic boron nitride is the super hard abrasive of a kind of high rigidity, high thermal stability.Cubic boron nitride tool is mainly comprised of tool base, cubic boron nitride joint piece etc.Cubic boron nitride joint piece is the core component of cubic boron nitride tool.Cubic boron nitride joint piece instrument adopts metallic bond, vitrified bond or resinoid bond manufacture conventionally.Wherein, metallic bond joint piece has good abrasive particle hold, higher stock-removing efficiency and good service life, is widely used in the material processing field such as stone material, concrete, semi-conducting material, pottery and steel alloy.
Prepare metal binder cubic boron nitride joint piece and have powder metallurgic method, galvanoplastic and high temperature brazing method.Prepare metal binder cubic boron nitride joint piece instrument and conventionally adopt powder metallurgy sintered method.Powder metallurgic method preparation mainly contains cold pressing-infusion process, precompressed-calcining-hot pressing sintering method and precompressed-hot pressing sintering method.
Cold pressing-infusion process is to utilize cold press that cubic boron nitride and bonding agent are blended in and in steel mold, apply certain pressure and suppress blank, after mould unloading, again the bonding agent binding metal infiltration of fusing is entered cubic boron nitride and the coarse grained combination skeleton of high-melting-point mutually in.
Precompressed-calcining-hot pressing sintering method be mixture cold is molded after, at a certain temperature calcining after, send into hot press precompressed, energising be heated to technological temperature, after heat-insulation pressure keeping certain hour release cooling, finally unload hot pressing die.
Precompressed-hot pressing sintering method is that the precompressed of cubic boron nitride compound is had after the pressed compact of certain density, and reusable heat presses sintering machine sintering to prepare cubic boron nitride joint piece.The at present domestic the method that generally adopts is manufactured cubic boron nitride joint piece.
Traditional several powder metallurgy sintered legal system saves piece for cubic boron nitride, and required heat is all to be provided by outside heat, and sintering system self can not spontaneous reaction produce heat, and abrasive particle can not produce chemical metallurgy and be combined between carcass; Production cycle is long, and energy consumption is high, and production efficiency is lower, and production cost is higher.
Summary of the invention
The object of the invention is to overcome the above-mentioned existing shortcoming of preparing cubic boron nitride joint piece instrument, propose a kind of vacuum that certainly spreads of induced with laser of utilizing and prepare cubic boron nitride joint piece instrument, to realize preparation high-performance cubic boron nitride joint piece instrument, improve service life and the working (machining) efficiency of instrument.
In order to reach foregoing invention object, the present invention adopts following technical scheme:
(1) select the Ni-Al-Cr-Ti-Co-Ce metal dust of average grain diameter≤38 micron, each component molar ratio is respectively: Ni:40-70%; Al:10-30%; Cr:5-10%; Ti:10-25%; Co:5-15%; Rare-Earth Ce alloy: 0.05-1%, abrasive material is cubic boron nitride, cubic boron nitride concentration is that 20-150%(is the weight of the contained cubic boron nitride abrasive materials of unit volume, referring to GB/T6409.1-94), metal powder in certain ratio is evenly mixed in ball mill to 8-36 hour, the metal dust compound that obtains mixing;
(2) the metal dust compound and the certain density cubic boron nitride abrasive materials that step (1) are obtained mix 4-24 hour in batch mixer, obtain saving piece compound;
(3) joint piece compound step (2) being obtained is according to cubic boron nitride tool shape, compressing in mould (such as fan-shaped, rectangle or the shape such as cylindrical), and pressing process pressurize 5-30 minute, obtains saving piece briquetting;
(4) joint piece briquetting step (3) being obtained is positioned in 80-120 ℃ of insulating box, insulation 1-3 hour, remove moisture and associated gas composition in joint piece briquetting, joint piece briquetting after constant temperature is processed is placed on the workbench of vacuum self-propagating reaction container, the position of adjusting joint piece briquetting can be heated laser facula and is covered whole joint piece, closed reaction vessel, vacuumize until vacuum reach≤10
-2pa, covers and adds thermal center piece briquetting with laser, adjusts laser-induced combustion power, and joint piece briquetting ignites after self-propagating reaction, stops LASER HEATING, and joint piece briquetting relies on id reaction liberated heat to maintain reaction and proceeds, until synthesizing cubic boron nitride joint piece;
(5) cubic boron nitride joint piece step (4) being obtained is through reconditioning, processing, by becoming corresponding cubic boron nitride tool such as relevant interconnection technique assemblies such as solderings.
The present invention adopts laser-induced self-propagating reaction vacuum to prepare cubic boron nitride joint piece instrument, and the method is utilized induced with laser heating means, can realize the quick constituency heating of joint piece, and the heat affecting of cubic boron nitride and carcass is less.Cubic boron nitride abrasive materials and carcass material, by chemical metallurgy combination, have improved the mechanical performance of joint piece, and then have improved joint piece service life and working (machining) efficiency.Compared with the prior art, the invention has the advantages that:
(1) adopt Ni-Al-Cr-Ti-Co-Ce system, by Ni base carcass system, TRANSIENT HIGH TEMPERATURE synthetic TiNi, TiNi that system can produce by the self-propagating reaction of self
2; CrN; NiAl, Ni
3al, Ni
2al
3and TiAl
3, TiN, TiB
2deng the carcass transition zone that is conducive to improve carcass physics, mechanical performance.Wherein, Ti element can reduce the contact angle of carcass and cubic boron nitride, improves the wetability of carcass material and cubic boron nitride, improves the adhesion strength of carcass material and cubic boron nitride; Adding of Al can provide more heat for Ni and the whole self-propagating reaction of Ti; Ni element has the effect of dispersion-strengtherning to carcass material, improve bonding agent intensity, improves the mechanical performance of instrument.Co element add the better carcass strength that improved to meet the processing needs of different workpieces.Element Cr and Ti can form the chemical metallurgy combinations such as Cr-N, Ti-N, Ti-B on cubic boron nitride surface, have greatly improved the hold of carcass cubic boron nitride.
(2) added rare earth element ce, Ce can strengthen the chemical metallurgy associativity between carcass material and cubic boron nitride, refinement carcass crystal grain, improve the chemical bond situation between metallic bond and cubic boron nitride, improve the hold of metal matrix cubic boron nitride, and can reduce from the heat etching that spreads the high temperature cubic boron nitride surface of generation.
(3) adopt LASER HEATING mode, have contactless, pollution-free, be easy to control, heating and cooldown rate high, course of reaction rapidly and efficiently, there is no other firing equipments, production efficiency is higher, and can realize the quick constituency heating to joint block of material, the heat affecting of cubic boron nitride is less.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is elaborated.
Embodiment 1:
A vacuum preparation joint piece type cubic boron nitride open flume type saw blade, specification is: diameter 150mm, matrix thickness 1.5mm, diameter of bore 22.23mm, joint piece transverse tooth thickness 2mm, joint piece tooth depth 8mm:
(1) example is averaged the Ni powder 50% that particle diameter is about 38 microns in molar ratio, Al powder 15%, and Ce alloyed powder 0.5%, Cr powder 7%, Ti powder 20%, Co powder 7.5% carries out abundant ball milling and mixes 16 hours, the metal powder material that obtains mixing on ball mill;
(2) what step (1) is obtained mixes the cubic boron nitride that metal powder material and granularity are 200/230, the ratio that is 100% in cubic boron nitride concentration (being that every cubic centimetre of powder cubic boron nitride content is about 4.4 carats) is configured to batch mixing, cubic boron nitride and metal powder material are fully mixed to 10 hours on batch mixer, obtain saving piece compound;
(3) joint piece compound step (2) being obtained is placed in compressing transverse tooth thickness 2mm on mould, the joint piece briquetting of tooth depth 8mm, pressurize 10 minutes;
(4) joint piece briquetting step (3) being obtained is put into 100 ℃ of insulating box insulations 2 hours, and the joint piece briquetting after constant temperature is processed is placed in vacuum laser self-propagating reaction stove, and capping stove, vacuumizes, until vacuum is 10
-3pa, adjusts the laser facula of reacting furnace and saves piece briquetting position, adds thermal center piece briquetting, and joint deblocking temperature rises rapidly, occurs to stop LASER HEATING after self-propagating reaction, with the synthetic joint of himself exothermic heat of reaction piece, finally cooling with stove, obtains required cubic boron nitride and saves piece;
(5) reconditioning of cubic boron nitride joint piece, the processing that step (4) are obtained, then cubic boron nitride is saved to block brazing at diameter 150mm, matrix thickness 1.5mm, in the tool base of diameter of bore 22.23mm, gets final product to obtain cubic boron nitride open flume type saw blade.
Embodiment 2:
A vacuum preparation joint piece type cubic boron nitride individual pen emery wheel, specification is: external diameter 100mm, internal diameter 20mm; The size of joint piece: thickness 5mm, width 8mm, 8 of quantity:
(1) example is averaged the Ni powder 50% that particle diameter is about 20 microns in molar ratio, Al powder 15%, and Ce alloyed powder 0.5%, Cr powder 5%, Ti powder 16%, Co powder 13.5% carries out abundant ball milling and mixes 20 hours, the metal powder material that obtains mixing on ball mill;
(2) what step (1) is obtained mixes the cubic boron nitride that metal powder material and granularity are 270/325, the ratio that is 75% in cubic boron nitride concentration (being that every cubic centimetre of powder cubic boron nitride content is about 3.3 carats) is configured to compound, cubic boron nitride and metal powder material are fully mixed to 8 hours on batch mixer, obtain saving piece compound;
(3) it is thickness 5mm that joint piece compound step (2) being obtained is pressed into specification with mould, the joint piece briquetting of width 8mm, pressurize 20 minutes;
(4) joint piece briquetting step (3) being obtained is positioned over 100 ℃ of insulating box insulations 2 hours, and the joint piece briquetting after constant temperature is processed is placed in vacuum laser self-propagating reaction stove, and capping stove, vacuumizes, until vacuum is 10
-3pa, adjusts the laser facula of reacting furnace and saves piece briquetting position, adds thermal center piece briquetting, and joint deblocking temperature rises rapidly, occurs to stop LASER HEATING after self-propagating reaction, with the synthetic joint of himself exothermic heat of reaction piece, finally cooling with stove, obtains required cubic boron nitride and saves piece;
(5) reconditioning of cubic boron nitride joint piece, the processing that step (4) are obtained, then 8 cubic boron nitrides are saved to block brazing at external diameter 100mm, in the tool base of internal diameter 20mm, get final product and to obtain joint piece type cubic boron nitride individual pen emery wheel.
Embodiment 3:
A vacuum preparation joint piece type cubic boron nitride corrugated abrasive wheel, specification is: external diameter 100mm, internal diameter 20mm; The size of joint piece: thickness 5mm, width 11mm, 16 of quantity:
(1) example is averaged the Ni powder 45% that particle diameter is about 20 microns in molar ratio, Al powder 15%, and Ce alloyed powder 0.3%, Cr powder 7%, Ti powder 20%, Co powder 12.7% carries out abundant ball milling and mixes 20 hours, the metal powder material that obtains mixing on ball mill;
(2) what step (1) is obtained mixes the cubic boron nitride that metal powder material and granularity are 200/230, the ratio that is 50% in cubic boron nitride concentration (being that every cubic centimetre of powder cubic boron nitride content is about 2.2 carats) is configured to batch mixing, cubic boron nitride and metal powder material are fully mixed to 8 hours on batch mixer, obtain saving piece compound;
(3) it is thickness 5mm that joint piece compound step (2) being obtained is pressed into specification with mould, the joint piece briquetting of width 11mm, pressurize 20 minutes;
(4) joint piece briquetting step (3) being obtained is positioned over 100 ℃ of insulating box insulations 2 hours, and the joint piece briquetting after constant temperature is processed is placed in vacuum laser self-propagating reaction stove, and capping stove, vacuumizes, until vacuum is 10
-3pa, adjusts the laser facula of reacting furnace and saves piece briquetting position, adds thermal center piece briquetting, and joint deblocking temperature rises rapidly, occurs to stop LASER HEATING after self-propagating reaction, with the synthetic joint of himself exothermic heat of reaction piece, finally cooling with stove, obtains required cubic boron nitride and saves piece;
(5) reconditioning of cubic boron nitride joint piece, the processing that step (4) are obtained, then 16 cubic boron nitrides are saved to block brazing at external diameter 100mm, in the tool base of internal diameter 20mm, get final product and to obtain joint piece type cubic boron nitride corrugated abrasive wheel.
Claims (1)
1. cubic boron nitride saves a preparation method for piece instrument, it is characterized in that comprising the following steps:
(1) select the Ni-Al-Cr-Ti-Co-Ce metal dust of average grain diameter≤38 micron, each component molar ratio is respectively: Ni:40-70%; Al:10-30%; Cr:5-10%; Ti:10-25%; Co:5-15%; Rare-Earth Ce alloy: 0.05-1%, abrasive material is cubic boron nitride, cubic boron nitride concentration is that 20-150%(is the weight of the contained cubic boron nitride abrasive materials of unit volume), metal powder in certain ratio is evenly mixed in ball mill to 8-36 hour, the metal dust compound that obtains mixing;
(2) the metal dust compound and the certain density cubic boron nitride abrasive materials that step (1) are obtained mix 4-24 hour in batch mixer, obtain saving piece compound;
(3) joint piece compound step (2) being obtained is according to cubic boron nitride tool shape, compressing in mould (such as fan-shaped, rectangle or the shape such as cylindrical), and pressing process pressurize 5-30 minute, obtains saving piece briquetting;
(4) joint piece briquetting step (3) being obtained is positioned in 80-120 ℃ of insulating box, insulation 1-3 hour, remove moisture and associated gas composition in joint piece briquetting, joint piece briquetting after constant temperature is processed is placed on the workbench of vacuum self-propagating reaction container, the position of adjusting joint piece briquetting can be heated laser facula and is covered whole joint piece, closed reaction vessel, vacuumize until vacuum reach≤10
-2pa, covers and adds thermal center piece briquetting with laser, adjusts laser-induced combustion power, and joint piece briquetting ignites after self-propagating reaction, stops LASER HEATING, and joint piece briquetting relies on id reaction liberated heat to maintain reaction and proceeds, until synthesizing cubic boron nitride joint piece;
(5) cubic boron nitride joint piece step (4) being obtained is through reconditioning, processing, by becoming corresponding cubic boron nitride tool such as relevant interconnection technique assemblies such as solderings.
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| CN201310529172.3A CN103551576A (en) | 2013-10-31 | 2013-10-31 | Method for preparing cubic boron nitride agglomeration tool |
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| CN201310529172.3A CN103551576A (en) | 2013-10-31 | 2013-10-31 | Method for preparing cubic boron nitride agglomeration tool |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111266579A (en) * | 2020-02-25 | 2020-06-12 | 中国科学院上海硅酸盐研究所 | Full-automatic selective laser melting continuous synthesis equipment and method |
| CN114227558A (en) * | 2021-12-24 | 2022-03-25 | 苏州科技大学 | Method for sintering cubic boron nitride grinding wheel through ultrasonic-assisted friction |
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| JPS57131334A (en) * | 1981-02-02 | 1982-08-14 | Tatsuro Kuratomi | Manufacture of sintered body of cubic system boron nitride |
| CN1810420A (en) * | 2005-01-27 | 2006-08-02 | 广东工业大学 | Making process of tool with single layer of super hard abrasive |
| CN1950165A (en) * | 2004-04-30 | 2007-04-18 | 住友电工硬质合金株式会社 | Tool of surface-coated cubic boron nitride sintered compact and process for producing the same |
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| CN102114616A (en) * | 2010-12-06 | 2011-07-06 | 中原工学院 | Ti3AlC2-radical ceramic bond and cubic boron nitride (CBN) grinding tool and manufacturing method |
| CN102225529A (en) * | 2011-05-27 | 2011-10-26 | 云南光电辅料有限公司 | Cubic boron nitride honing tool and production method thereof |
| CN102712048A (en) * | 2010-10-19 | 2012-10-03 | 住友电工硬质合金株式会社 | Tool comprising sintered cubic boron nitride |
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2013
- 2013-10-31 CN CN201310529172.3A patent/CN103551576A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57131334A (en) * | 1981-02-02 | 1982-08-14 | Tatsuro Kuratomi | Manufacture of sintered body of cubic system boron nitride |
| CN1950165A (en) * | 2004-04-30 | 2007-04-18 | 住友电工硬质合金株式会社 | Tool of surface-coated cubic boron nitride sintered compact and process for producing the same |
| CN1810420A (en) * | 2005-01-27 | 2006-08-02 | 广东工业大学 | Making process of tool with single layer of super hard abrasive |
| CN101341268A (en) * | 2005-10-28 | 2009-01-07 | 六号元素（产品）（控股）公司 | Cubic boron nitride compact |
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| CN102712048A (en) * | 2010-10-19 | 2012-10-03 | 住友电工硬质合金株式会社 | Tool comprising sintered cubic boron nitride |
| CN102114616A (en) * | 2010-12-06 | 2011-07-06 | 中原工学院 | Ti3AlC2-radical ceramic bond and cubic boron nitride (CBN) grinding tool and manufacturing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111266579A (en) * | 2020-02-25 | 2020-06-12 | 中国科学院上海硅酸盐研究所 | Full-automatic selective laser melting continuous synthesis equipment and method |
| CN114227558A (en) * | 2021-12-24 | 2022-03-25 | 苏州科技大学 | Method for sintering cubic boron nitride grinding wheel through ultrasonic-assisted friction |
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Application publication date: 20140205 |