CN103381481A - Diamond fiber, as well as manufacturing method and application thereof - Google Patents
Diamond fiber, as well as manufacturing method and application thereof Download PDFInfo
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- CN103381481A CN103381481A CN201210133699XA CN201210133699A CN103381481A CN 103381481 A CN103381481 A CN 103381481A CN 201210133699X A CN201210133699X A CN 201210133699XA CN 201210133699 A CN201210133699 A CN 201210133699A CN 103381481 A CN103381481 A CN 103381481A
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Abstract
The invention discloses diamond fiber, as well as a manufacturing method and application thereof. The method comprises the following steps: a) uniformly mixing Ti-plated diamond and brazing alloy powder of Cu-10Sn-5Ti according to the ratio of 1:1-1:1.2, then milling the mixture along with paraffin base binding agent to prepare a feed material; b) injecting the feed material prepared in step a) to form fibriform test piece through an injecting forming machine, cutting the fibriform test piece into fiber in uniform length; c) performing degreasing process for the diamond fiber to remove binding agent; d) performing vacuum sintering for the degreased diamond fiber. According to the manufacturing method for the diamond fiber, the prepared diamond fiber has a high diamond holding strength; diamond cannot fall off easily; the diamond use ratio is increased; meanwhile, as diamond fiber has a certain length diameter ratio and macroscopical dimension, artificial ordered arrangement can be realized; the diamond fiber can be further used for the preparation of grinding wheel.
Description
Technical field
The present invention relates to the diamond fiber that a kind of energy is used for grinding, refer to especially a kind ofly have than big L/D ratio, diamond difficult drop-off, have the diamond fiber of excellent machinability, and its production and use.
Background technology
Existing Al
2O
3Fiber or SiC whisker rigidity are limited, can't be competent at the needs of superhard material high speed and precision processing; Have the pretreatment difficulty and adopt chemical vapour deposition (CVD) (CVD) method deposition of diamond coatings on tungsten filament or SiC fiber to prepare diamond fiber, coating quality is poor, and diamond deposition speed is slow, can't realize the continuous production in enormous quantities of diamond fiber.
Summary of the invention
The technical problem to be solved in the present invention is, deficiency for the prior art existence, the new method that a kind of combining powder injection moulding and vacuum brazing technique prepare diamond fiber is proposed, make the diamond fiber of preparation have draw ratio large, be convenient to artificial ordered arrangement, it is large that diamond is controlled intensity, difficult drop-off, and further can be used in the preparation of emery wheel.
The objective of the invention is to be achieved through the following technical solutions.
A kind of preparation method of diamond fiber, described method comprises the steps:
A) will plate Ti diamond and Cu-10Sn-5Ti solder powder and mix in 1: 1 by volume～1: 1.2 after, mixing preparation feeding together with the paraffinic base binding agent; B) feeding that on injection (mo(u)lding) machine, step a) is prepared is injected into fibrous test specimen, and fibrous test specimen is cut to the fiber of length homogeneous; C) diamond fiber is carried out ungrease treatment to remove binding agent wherein; D) diamond fiber after degreasing is carried out the vacuum brazing sintering.
The present invention's Cu-10Sn-5Ti solder powder used is the aerosolization powder, and composition and percentage by weight are: Cu80～85%, Sn 10～15%, Ti 5～10%, powder size is 500～600 orders.
The composition of the present invention's paraffinic base binding agent used and mass percent are that paraffin is 65～69%, and high density polyethylene (HDPE) is 10～15%, and low density polyethylene (LDPE) is 15～20%, and stearic acid is 1～5%.
Mixed-powder and the even mixing preparation feeding of binding agent of plating Ti diamond and Cu-10Sn-5Ti powder in the present invention, melting temperature is 150～157 ℃, and mixing time is 1～2 hour, and powder loading is 63～67%.
The injection molding technological parameter of the present invention is: injection pressure is 10～12MPa, and dwell pressure is 8～9.6MPa, and mold temperature is 40～50 ℃, and injection temperature is 150～160 ℃, and injection rate is 50～60%.。
solvent degreasing+hot degreasing two step degreasing methods are adopted in ungrease treatment of the present invention, wherein solvent degreasing is degreasing 2.5～3 hours in 35～40 ℃ in normal heptane, after put into heating furnace and dried under 35～40 ℃ 1～2 hour, hot degreasing is carried out in the high-temperature tubular electric furnace, degreasing atmosphere is flowing hydrogen, hydrogen flowing quantity is 4～5L/min, degreasing process rises to 165～170 ℃ for the heating rate with 1～2 ℃/min from room temperature, heating rate with 1～2 ℃/min after insulation 60～80min rises to 340～350 ℃ of insulation 60～80min, then be heated to 550～600 ℃ and be incubated 60～80min with the speed of 2～3 ℃/min, rise to after 600～650 ℃ of insulation 60～80min cooling with stove with the heating rate of 2～3 ℃/min at last.
Diamond fiber vacuum brazing sintering of the present invention is to be heated to after 900～920 ℃ of insulation 8～10min cooling with stove with the heating rate of 5～6 ℃/min under vacuum environment.
The present invention also provides according to the diamond fiber of said method preparation and the application in the emery wheel preparation thereof.
The present invention's dusty material used comprises plating Ti diamond that grinding is used and the Cu-10Sn-5Ti powder of soldering sintering.Diamond is processed by plated surface Ti, generate the TiC film of one deck compact structure, even thickness, the TiC layer can be realized metallurgical binding between diamond and metallic bond as intermediary, Bond Strength of Diamonds is large, difficult drop-off, plate simultaneously the Ti layer and can realize diamond insulation blocking effect, in minimizing soldering sintering process, oxygen or harmful element are to adamantine corrosion and fire damage; And the Cu-10Sn-5Ti solder powder is the aerosolization powder, for spherical or subsphaeroidal, is suitable for injection moulding, and powder is tiny on the other hand, has larger specific surface and sintering activity, is conducive to sintering densification.
The present invention prepares fibrous test specimen by powder injection molding process; realize that by the vacuum brazing sintering technology solder is to adamantine metallurgical binding again; it is large that diamond is controlled intensity; difficult drop-off; the protection of vacuum environment and diamond surface plating Ti layer can effectively reduce adamantine graphitization and fire damage, and diamond still has good processing characteristics; the diamond fiber of preparation has the large characteristics of draw ratio simultaneously, can realize it is carried out ordered arrangement.
As known from the above, the preparation method of a kind of diamond fiber of the present invention, it is large that the diamond fiber diamond of preparation is controlled intensity, difficult drop-off, can improve adamantine utilization rate, because diamond fiber has certain draw ratio and macro-size, can realize artificial ordered arrangement simultaneously, can be further used in the preparation of emery wheel.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment 1: diamond fiber of the present invention is take plating Ti diamond, Cu-10Sn-5Ti solder powder as raw material, wherein plating the Ti diamond adopts the little evaporation coating technology of vacuum at the even plating one deck of diamond surface Ti layer, diamond grit is 140/170 order, the Cu-10Sn-5Ti solder powder prepares by aerosolization, and granularity is 600 orders.After plating Ti diamond and Cu-10Sn-5Ti solder powder 1: 1.2 by volume and mixing in the self-control mixing apparatus, with paraffinic base binding agent in vacuum kneader mixing 1 hour, prepare the feeding that powder distribution is even, mobile performance is good, wherein powder loading is 63%, composition and the proportioning of paraffinic base binding agent are as follows: paraffin (PW) is 69wt.%, high density polyethylene (HDPE) (HDPE) is 10wt.%, low density polyethylene (LDPE) (LDPE) is 20wt.%, and stearic acid (SA) is 1wt.%.Then on the minitype vertical type injection (mo(u)lding) machine, feeding is carried out injection moulding, the concrete technology parameter is: injection pressure is 12MPa, dwell pressure is 9.6MPa, mold temperature is 45 ℃, injection temperature is 150 ℃, and injection rate is 50%, and injection member thickness is 1mm, then injection member is cut to the fiber of length homogeneous, is of a size of 10mm * 1mm * 1mm.adopt solvent degreasing+hot degreasing two step degreasing methods that the binding agent in fiber is removed, wherein solvent degreasing is degreasing 2.5 hours in 35 ℃ in normal heptane, after put into heating furnace (40 ℃) oven dry 1 hour, hot degreasing is carried out in the high-temperature tubular electric furnace, degreasing atmosphere is flowing hydrogen, hydrogen flowing quantity is 5L/min, degreasing process rises to 165 ℃ for the heating rate with 2 ℃/min from room temperature, heating rate with 2 ℃/min after insulation 60min rises to 350 ℃ of insulation 60min, then be heated to 550 ℃ and be incubated 60min with the speed of 2 ℃/min, rise to after 600 ℃ of insulation 60min cooling with stove with the heating rate of 3 ℃/min at last.After degreasing, diamond fiber is carried out the vacuum brazing sintering, concrete sintering process is: sintering in 400 ℃ of temperature current downflow hydrogen atmospheres at first, the solder oxidized portion is reduced, then be heated to after 920 ℃ of insulation 10min cooling with stove with the heating rate of 5 ℃/min under vacuum environment.
Embodiment 2: diamond fiber of the present invention is take plating Ti diamond, Cu-10Sn-5Ti solder powder as raw material, wherein plating the Ti diamond adopts the little evaporation coating technology of vacuum at the even plating one deck of diamond surface Ti layer, diamond grit is 140/170 order, the Cu-10Sn-5Ti solder powder prepares by aerosolization, and granularity is 500 orders.After plating Ti diamond and Cu-10Sn-5Ti solder powder 1: 1 by volume and mixing in the self-control mixing apparatus, with paraffinic base binding agent in vacuum kneader mixing 1.5 hours, prepare the feeding that powder distribution is even, mobile performance is good, wherein powder loading is 66%, composition and the proportioning of paraffinic base binding agent are as follows: paraffin (PW) is 65wt.%, high density polyethylene (HDPE) (HDPE) is 10wt.%, low density polyethylene (LDPE) (LDPE) is 17wt.%, and stearic acid (SA) is 8wt.%.Then on the minitype vertical type injection (mo(u)lding) machine, feeding is carried out injection moulding, the concrete technology parameter is: injection pressure is 10MPa, dwell pressure is 8MPa, mold temperature is 45 ℃, injection temperature is 160 ℃, and injection rate is 60%, and injection member thickness is 1mm, then injection member is cut to the fiber of length homogeneous, is of a size of 10mm * 1mm * 1mm.adopt solvent degreasing+hot degreasing two step degreasing methods that the binding agent in fiber is removed, wherein solvent degreasing is degreasing 3 hours in 30 ℃ in normal heptane, after put into heating furnace (40 ℃) oven dry 1.5 hours, hot degreasing is carried out in the high-temperature tubular electric furnace, degreasing atmosphere is flowing hydrogen, hydrogen flowing quantity is 4L/min, degreasing process rises to 170 ℃ for the heating rate with 1 ℃/min from room temperature, heating rate with 2 ℃/min after insulation 80min rises to 350 ℃ of insulation 80min, then be heated to 580 ℃ and be incubated 80min with the speed of 2 ℃/min, rise to after 650 ℃ of insulation 80min cooling with stove with the heating rate of 3 ℃/min at last.After degreasing, diamond fiber is carried out the vacuum brazing sintering, concrete sintering process is: sintering in 400 ℃ of temperature current downflow hydrogen atmospheres at first, the solder oxidized portion is reduced, then be heated to after 900 ℃ of insulation 10min cooling with stove with the heating rate of 6 ℃/min under vacuum environment.
It is large that the diamond fiber diamond of the present invention preparation is controlled intensity, and difficult drop-off simultaneously because diamond fiber has certain draw ratio and macro-size, can be realized artificial ordered arrangement, can be further used in the preparation of emery wheel.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow person skilled in the art scholar can understand content of the present invention and implement according to this, can not limit protection scope of the present invention with this.
Claims (9)
1. the preparation method of a diamond fiber, described method comprises the steps:
A) will plate Ti diamond and Cu-10Sn-5Ti solder powder and mix in 1: 1 by volume～1: 1.2 after, mixing preparation feeding together with the paraffinic base binding agent;
B) feeding that on injection (mo(u)lding) machine, step a) is prepared is injected into fibrous test specimen, and fibrous test specimen is cut to the fiber of length homogeneous;
C) diamond fiber is carried out ungrease treatment to remove binding agent wherein;
D) diamond fiber after degreasing is carried out the vacuum brazing sintering.
2. the preparation method of diamond fiber according to claim 1, it is characterized in that: Cu-10Sn-5Ti solder powder used is the aerosolization powder, composition and percentage by weight are: Cu 80～85%, Sn 10～15%, Ti 5～10%, powder size is 500～600 orders.
3. the preparation method of diamond fiber according to claim 1, it is characterized in that: the composition of paraffinic base binding agent used and mass percent are that paraffin is 65～69%, high density polyethylene (HDPE) is 10～15%, and low density polyethylene (LDPE) is 15～20%, and stearic acid is 1～5%.
4. the preparation method of diamond fiber according to claim 1, it is characterized in that: mixed-powder and the even mixing preparation feeding of binding agent of plating Ti diamond and Cu-10Sn-5Ti powder, melting temperature is 150～157 ℃, and mixing time is 1～2 hour, and powder loading is 63～67%.
5. the preparation method of diamond fiber according to claim 1, it is characterized in that: utilize the fibrous test specimen of vertical type injection molding machine injection, technological parameter is: injection pressure is 10～12MPa, dwell pressure is 8～9.6MPa, mold temperature is 40～50 ℃, injection temperature is 150～160 ℃, and injection rate is 50～60%.
6. the preparation method of diamond fiber according to claim 1, it is characterized in that: solvent degreasing+hot degreasing two step degreasing methods are adopted in ungrease treatment, wherein solvent degreasing is degreasing 2.5～3 hours in 35～40 ℃ in normal heptane, after put into heating furnace and dried under 35～40 ℃ 1～2 hour, hot degreasing is carried out in the high-temperature tubular electric furnace, degreasing atmosphere is flowing hydrogen, hydrogen flowing quantity is 4～5L/min, degreasing process rises to 165～170 ℃ for the heating rate with 1～2 ℃/min from room temperature, heating rate with 1～2 ℃/min after insulation 60～80min rises to 340～350 ℃ of insulation 60～80min, then be heated to 550～600 ℃ and be incubated 60～80min with the speed of 2～3 ℃/min, rise to after 600～650 ℃ of insulation 60～80min cooling with stove with the heating rate of 2～3 ℃/min at last.
7. the preparation method of diamond fiber according to claim 1 is characterized in that: the vacuum brazing sintering is to be heated to after 900～920 ℃ of insulation 8～10min cooling with stove with the heating rate of 5～6 ℃/min under vacuum environment.
8. the diamond fiber of arbitrary described method preparation according to claim 1-7.
9. the application of the diamond fiber of arbitrary described method preparation according to claim 1-7 is characterized in that the preparation for emery wheel.
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| CN201210133699XA CN103381481A (en) | 2012-05-03 | 2012-05-03 | Diamond fiber, as well as manufacturing method and application thereof |
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| CN201210133699XA CN103381481A (en) | 2012-05-03 | 2012-05-03 | Diamond fiber, as well as manufacturing method and application thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106078519A (en) * | 2016-06-17 | 2016-11-09 | 湘潭大学 | A kind of method using diamond fiber micro-cutting to carry out emery wheel appearance reconstruct |
| CN106553134A (en) * | 2016-12-02 | 2017-04-05 | 大连圣洁热处理科技发展有限公司 | A kind of grinding wheel and preparation method thereof |
| CN107116221A (en) * | 2017-06-22 | 2017-09-01 | 绍兴华晶科技有限公司 | A kind of manufacture method of emery wheel |
| CN108188942A (en) * | 2017-12-18 | 2018-06-22 | 西安锐凝超硬工具科技有限公司 | A kind of cutting BGA package cuts piece preparation method with metal-bonded diamond |
| CN110586926A (en) * | 2019-09-12 | 2019-12-20 | 厦门高时实业有限公司 | Method for preparing diamond wire saw bead based on brazing |
| CN111775070A (en) * | 2020-07-11 | 2020-10-16 | 湖南科技大学 | Preparation method of porous self-sharpening brazing diamond grinding wheel and abrasive wear matching method thereof |
| CN112008619A (en) * | 2020-09-03 | 2020-12-01 | 湖南科技大学 | Preparation method of ordered diamond brazing grinding wheel with porous structure |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106078519A (en) * | 2016-06-17 | 2016-11-09 | 湘潭大学 | A kind of method using diamond fiber micro-cutting to carry out emery wheel appearance reconstruct |
| CN106078519B (en) * | 2016-06-17 | 2018-03-13 | 湘潭大学 | A kind of method that emery wheel appearance reconstruct is carried out using diamond fiber micro-cutting |
| CN106553134A (en) * | 2016-12-02 | 2017-04-05 | 大连圣洁热处理科技发展有限公司 | A kind of grinding wheel and preparation method thereof |
| CN107116221A (en) * | 2017-06-22 | 2017-09-01 | 绍兴华晶科技有限公司 | A kind of manufacture method of emery wheel |
| CN108188942A (en) * | 2017-12-18 | 2018-06-22 | 西安锐凝超硬工具科技有限公司 | A kind of cutting BGA package cuts piece preparation method with metal-bonded diamond |
| CN110586926A (en) * | 2019-09-12 | 2019-12-20 | 厦门高时实业有限公司 | Method for preparing diamond wire saw bead based on brazing |
| CN110586926B (en) * | 2019-09-12 | 2021-06-04 | 厦门高时实业有限公司 | Method for preparing diamond wire saw bead based on brazing |
| CN111775070A (en) * | 2020-07-11 | 2020-10-16 | 湖南科技大学 | Preparation method of porous self-sharpening brazing diamond grinding wheel and abrasive wear matching method thereof |
| CN112008619A (en) * | 2020-09-03 | 2020-12-01 | 湖南科技大学 | Preparation method of ordered diamond brazing grinding wheel with porous structure |
| CN112008619B (en) * | 2020-09-03 | 2021-07-27 | 湖南科技大学 | Preparation method of ordered diamond brazing grinding wheel with porous structure |
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Application publication date: 20131106 |