CN109093122A - A kind of cutting type diamond cutter and preparation method thereof - Google Patents
A kind of cutting type diamond cutter and preparation method thereof Download PDFInfo
- Publication number
- CN109093122A CN109093122A CN201810982880.5A CN201810982880A CN109093122A CN 109093122 A CN109093122 A CN 109093122A CN 201810982880 A CN201810982880 A CN 201810982880A CN 109093122 A CN109093122 A CN 109093122A
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- powder
- cutting type
- diamond cutter
- type diamond
- metallic bond
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F2003/145—Both compacting and sintering simultaneously by warm compacting, below debindering temperature
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The present invention relates to a kind of cutting type diamond cutters and preparation method thereof, the cutting type diamond cutter is by adding silumin additive into metallic bond powder, using silumin additive during hot pressed sintering, lower than hot pressed sintering temperature peak, it can be fused into liquid in advance when 577 DEG C, on the one hand, play the role of lubricant in the interface that the liquid can penetrate between metallic bond powder and diamond abrasive grains, on the other hand, the effect of aluminium existing denitrifier and deoxidier in the liquid, it again can be at 800 DEG C, pass through the wetting to diamond abrasive, Carbide Phases are formed on diamond abrasive surface, bridge be bonded between diamond and metallic bond is constituted in the form of pinning.The cutting type diamond cutter being finally prepared, sintered blank consistency and all other mechanical performance index significantly improve under the conditions of same sintering temperature, so that the cutting ability of diamond cutter greatly improved and extend its service life.
Description
Technical field
The invention belongs to powder metallurgical technologies, and in particular to a kind of cutting type diamond cutter and preparation method thereof.
Background technique
Sawing or drilling diamond-like cutter are mainly made of sawing or drilling diamond-like abrasive material and metallic bond, closely
Year rhine metal hard rock synthetic technology and cutter making technology are fast-developing, reduce the cost of charp tool, result in stone material, glass, mixed
The cost of charp tool of the manufacture fields such as solidifying soil declines to a great extent, then promotes the extensive use of diamond cutter.For in stone material, glass
For sawing used in the construction materials such as glass, ceramics, concrete and pitch and infrastructure or drilling diamond-like cutter,
Suitable metallic bond includes cobalt base bonding agent, Ni-based bonding agent and iron-binding agent, from reducing cost and accessibility is come
It says, iron-binding agent accounts for dominant position at present.Typical solid-phase sintering in the sintering of these bonding agent systems, i.e., by
The stages such as particle re-arrangement, stomata filling, grain growth composition, generally existing sintering temperature is higher or sintered blank consistency is relatively low
Phenomenon.Solid-phase sintering is mainly by diffusion mass transfer, for the melt mass transfer of liquid-phase sintering, same temperature, pressure and when
Between lower to obtain high-compactness more difficult.
Currently, the manufacturing process of sawing or drilling diamond-like cutter is powder metallurgy hot press forming technology, the master of technique
Wanting parameter is sintering (peak value) temperature, pressure and sintering time.Technological parameter selection, mainly around the cause of green compact height or green compact
Density and sintering cost.Therefore, sintering temperature is as low as possible, to prevent diamond properties from degrading and save electric power；Pressure is wanted
Extend the service life of graphite jig by reasonable selection；Sintering time is as short as possible, to reduce horsepower requirements, improves split run
Secondary yield.But cobalt, the nickel, ferrous metals bonding agent system being currently mainly used, mainly with solid phase during hot pressed sintering
Based on sintering, there is following problems:
(1) if sintering temperature improves to meet and improve sintered blank consistency, there are diamond abrasives at high temperature will
Tend to be aoxidized, graphitization and intensity degradation, reduces the cutting ability of diamond abrasive, and for producing in enormous quantities,
Sintering temperature is higher, and power consumption is bigger, and causing cutter, increased production cost.
(2) if sintering temperature reduces, there are sintered blank consistency is inadequate, sintered blank consistency is diamond cutter
One critical index, sintered blank consistency will at least reach 90% theoretical density, if sintered blank consistency is down to 85%
Theoretical density is worn hereinafter, can then accelerate metallic bond during use, is weakened the holding to diamond abrasive, is caused to make
The phenomenon that threshing too early with middle diamond abrasive, the service life of cutter is finally greatly reduced.If improved in hot-pressing sintering technique
Pressure although sintered blank consistency can be improved slightly, but can exceed that the compressive ultimate strength of graphite jig, graphite mo(u)ld
A large amount of losses of tool eventually lead to product cost and greatly improve.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the present invention provides a kind of cutting type diamond cutter and its system
Preparation Method can be significantly improved under the conditions of same sintering temperature by adding silumin additive into metallic bond
Sintered blank consistency and all other mechanical performance index use the longevity to improve diamond cutter cutting ability and extend it
Life.
The technical solution of the present invention is as follows:
A kind of raw material components of cutting type diamond cutter include: 3-10 parts by weight diamond abrasive, 90-97 parts by weight gold
Belong to bonding agent powder；
The metallic bond powder includes the silumin additive of 5-20%；The silumin additive by
Silicon and aluminium composition, wherein the silicone content accounts for 50-70%.
Preferably, the silumin additive is spherical powder.
Preferably, the average grain diameter of the spherical powder is 20-200 μm.
Preferably, the cutting type diamond cutter is sawing or drilling diamond-like cutter.
Preferably, the sawing or drilling diamond-like cutter are saw blade, drill bit, grinding wheel, grinding roller.
A method of the cutting type diamond cutter is prepared, is included the following steps:
(1) diamond abrasive and metallic bond powder are uniformly mixed, obtain mixed-powder；
(2) step (1) mixed-powder is packed into mold, through hot pressed sintering to get the cutting type diamond cutter.
In step (1), the metallic bond powder is copper-based bonding agent powder, cobalt base bonding agent powder, Ni-based combination
Any one in agent powder and iron-binding agent powder.
In step (2), the temperature peak of the hot pressed sintering is 800-900 DEG C.
In step (2), the pressure of the hot pressed sintering is 0.5-5t/cm2。
In step (2), the time of the hot pressed sintering is 5-15min.
The invention has the benefit that
Cutting type diamond cutter of the present invention, during hot pressed sintering, as sintering temperature increases, Buddha's warrior attendant stone mill
Material and metallic bond powder overcome intergranular frictional resistance that particle migration occurs and discharge internal gas with compression volume.To
In metallic bond powder add 5-20% silumin additive after, silumin additive during hot pressed sintering,
Lower than hot pressed sintering temperature peak (800-900 DEG C), it is fused into liquid in advance when 577 DEG C, on the one hand, the liquid infiltration
Lubricant is played the role of at the interface of intergranular, and the frictional resistance of generation is migrated between reduction particle, and then promotes volume compression；It is another
Aspect, the aluminium in the liquid is a kind of active metal, can react respectively with nitrogen remaining in particle and oxygen and generate solid-state
Aluminium nitride and aluminium oxide, lead to the parital vacuum in gap between particle, thus promote the plastic deformation of particle to fill these spaces,
Volume compression is further promoted by the effect of deoxidier and denitrifier, and at 800 DEG C, liquid aluminium passes through to Buddha's warrior attendant stone mill
The wetting of material is formed Carbide Phases on diamond abrasive surface, is constituted between diamond and metallic bond in the form of pinning
The bridge of bonding, to improve holding of the metallic bond to diamond.The experiment proved that adding into metallic bond powder
Increase silico-aluminum additive, sintered blank consistency and all other mechanical performance index are significant under the conditions of same sintering temperature
It improves, so that the cutting ability of diamond cutter greatly improved and extend its service life.
Specific embodiment
Below by specific embodiment, the invention will be further described.
Embodiment 1
The present embodiment provides a kind of saw blade, raw material components include: that 3g granularity is the diamond abrasive of 40#, 97g metal bonding
Agent powder；Wherein, metallic bond powder is the carbonyl iron dust containing 5% silumin additive；Silumin additive
For spherical powder, average grain diameter is 20 μm.
Further, a kind of method preparing the saw blade is provided, is included the following steps:
(1) diamond abrasive and metallic bond powder are uniformly mixed, obtain mixed-powder；
(2) mixed-powder is packed into mold, is 800 DEG C in the temperature peak of sintering, sintering pressure 0.5t/cm2Item
Hot pressed sintering 15min is carried out under part up to the saw blade.
Embodiment 2
The present embodiment provides a kind of drill bit, raw material components include: diamond abrasive, the 90g metal knot that 10g granularity is 50#
Mixture powder；Wherein, metallic bond powder is the carbonyl iron dust containing 20% silumin additive；Silumin addition
Agent is spherical powder, and average grain diameter is 200 μm.
Further, a kind of method preparing the drill bit is provided, is included the following steps:
(1) diamond abrasive and metallic bond powder are uniformly mixed, obtain mixed-powder；
(2) mixed-powder is packed into mold, is 900 DEG C in sintering temperature peak value, sintering pressure 5t/cm2Under conditions of
Hot pressed sintering 5min is carried out up to the drill bit.
Embodiment 3
The present embodiment provides a kind of grinding wheel, raw material components include: that 5g granularity is the diamond abrasive of 60#, 95g metal bonding
Agent powder；Wherein, metallic bond powder is the carbonyl iron dust containing 10% silumin additive；Silumin additive
For spherical powder, average grain diameter is 60 μm.
Further, a kind of method preparing the grinding wheel is provided, is included the following steps:
(1) diamond abrasive and metallic bond powder are uniformly mixed, obtain mixed-powder；
(2) mixed-powder is packed into mold, is 900 DEG C in sintering temperature peak value, sintering pressure 1t/cm2Under conditions of
Hot pressed sintering 10min is carried out up to the grinding wheel.
Embodiment 4
The present embodiment provides a kind of grinding roller, raw material components include: that 7g granularity is the diamond abrasive of 40#, 93g metal bonding
Agent powder；Wherein, metallic bond powder is the carbonyl iron dust containing 15% silumin additive；Silumin additive
For spherical powder, average grain diameter is 80 μm.
Further, a kind of method preparing the grinding roller is provided, is included the following steps:
(1) diamond abrasive and metallic bond powder are uniformly mixed, obtain mixed-powder；
(2) mixed-powder is packed into mold, is 800 DEG C in sintering temperature peak value, sintering pressure 2t/cm2Under conditions of
Hot pressed sintering 10min is carried out up to the grinding roller.
Embodiment 5
The present embodiment provides a kind of saw blade, raw material components include: that 9g granularity is the diamond abrasive of 40#, 91g metal bonding
Agent powder；Wherein, metallic bond powder is the carbonyl iron dust containing 15% silumin additive；Silumin additive
For spherical powder, average grain diameter is 100 μm.
Further, a kind of method preparing the saw blade is provided, is included the following steps:
(1) diamond abrasive and metallic bond powder are uniformly mixed, obtain mixed-powder；
(2) mixed-powder is packed into mold, is 800 DEG C in sintering temperature peak value, sintering pressure 3t/cm2Under conditions of
Hot pressed sintering 10min is carried out up to the saw blade.
Comparative example 1
Difference with embodiment 5 is only that, high si-al alloy powder additive is not contained in raw material components.
The saw blade of embodiment 5 and comparative example 1 is subjected to Study on Mechanical Properties respectively, the results showed that the sintered blank of embodiment 5
Consistency improves 10% compared with comparative example 1, and tensile strength, impact flexibility or hardness improve 7-14%.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of cutting type diamond cutter, which is characterized in that raw material components include: 3-10 parts by weight diamond abrasive, 90-97
Part by weight of metal bonding agent powder；
The metallic bond powder includes the silumin additive of 5-20%；The silumin additive by silicon and
Aluminium composition, wherein the silicone content accounts for 50-70%.
2. cutting type diamond cutter according to claim 1, which is characterized in that the silumin additive is ball
Shape powder.
3. cutting type diamond cutter according to claim 2, which is characterized in that the average grain diameter of the spherical powder is
20-200μm。
4. cutting type diamond cutter according to claim 1, which is characterized in that the cutting type diamond cutter is saw
Cut or creep into diamond-like cutter.
5. cutting type diamond cutter according to claim 4, which is characterized in that the sawing or drilling diamond-like knife
Tool is saw blade, drill bit, grinding wheel, grinding roller.
6. a kind of method for preparing any one of claim 1-5 cutting type diamond cutter, which is characterized in that including as follows
Step:
(1) diamond abrasive and metallic bond powder are uniformly mixed, obtain mixed-powder；
(2) step (1) mixed-powder is packed into mold, through hot pressed sintering to get the cutting type diamond cutter.
7. the method for preparation cutting type diamond cutter according to claim 6, which is characterized in that described in step (1)
Metallic bond powder is copper-based bonding agent powder, cobalt base bonding agent powder, Ni-based bonding agent powder and iron-binding agent powder
In any one.
8. the method for preparation cutting type diamond cutter according to claim 6, which is characterized in that described in step (2)
The temperature peak of hot pressed sintering is 800-900 DEG C.
9. the method for preparation cutting type diamond cutter according to claim 6, which is characterized in that described in step (2)
The pressure of hot pressed sintering is 0.5-5t/cm2。
10. the method for preparation cutting type diamond cutter according to claim 6, which is characterized in that in step (2), institute
The time for stating hot pressed sintering is 5-15min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810982880.5A CN109093122B (en) | 2018-08-27 | 2018-08-27 | Cutting type diamond cutter and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810982880.5A CN109093122B (en) | 2018-08-27 | 2018-08-27 | Cutting type diamond cutter and preparation method thereof |
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| Publication Number | Publication Date |
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| CN109093122A true CN109093122A (en) | 2018-12-28 |
| CN109093122B CN109093122B (en) | 2021-04-06 |
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| CN201810982880.5A Active CN109093122B (en) | 2018-08-27 | 2018-08-27 | Cutting type diamond cutter and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628815A (en) * | 2018-12-29 | 2019-04-16 | 郑州机械研究所有限公司 | A kind of diamond saw blade |
| CN110173218A (en) * | 2019-05-29 | 2019-08-27 | 长沙锐合钻石工具有限公司 | A kind of preforming infiltration formula diamond-impregnated bit and preparation method thereof |
| CN111299629A (en) * | 2020-03-13 | 2020-06-19 | 苏州昆腾威新材料科技有限公司 | Self-sharpening diamond cutter and preparation method thereof |
| CN113442069A (en) * | 2021-06-30 | 2021-09-28 | 苏州航发航空零部件有限公司 | Fine grinding honing oilstone and preparation method and application thereof |
| CN115401200A (en) * | 2022-06-27 | 2022-11-29 | 山东华大金科新材料有限公司 | Diamond saw blade with strong impact toughness and high hardness and manufacturing process of diamond tool bit |
-
2018
- 2018-08-27 CN CN201810982880.5A patent/CN109093122B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628815A (en) * | 2018-12-29 | 2019-04-16 | 郑州机械研究所有限公司 | A kind of diamond saw blade |
| CN110173218A (en) * | 2019-05-29 | 2019-08-27 | 长沙锐合钻石工具有限公司 | A kind of preforming infiltration formula diamond-impregnated bit and preparation method thereof |
| CN110173218B (en) * | 2019-05-29 | 2021-03-23 | 长沙锐合钻石工具有限公司 | Preformed melt-impregnated diamond-impregnated drill bit and preparation method thereof |
| CN111299629A (en) * | 2020-03-13 | 2020-06-19 | 苏州昆腾威新材料科技有限公司 | Self-sharpening diamond cutter and preparation method thereof |
| CN111299629B (en) * | 2020-03-13 | 2021-08-06 | 苏州昆腾威新材料科技有限公司 | Self-sharpening diamond cutter |
| CN113442069A (en) * | 2021-06-30 | 2021-09-28 | 苏州航发航空零部件有限公司 | Fine grinding honing oilstone and preparation method and application thereof |
| CN115401200A (en) * | 2022-06-27 | 2022-11-29 | 山东华大金科新材料有限公司 | Diamond saw blade with strong impact toughness and high hardness and manufacturing process of diamond tool bit |
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| Publication number | Publication date |
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| CN109093122B (en) | 2021-04-06 |
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Effective date of registration: 20211229 Address after: 301800 No. 13, Baofu Road, energy conservation and environmental protection industrial zone, Baodi District, Tianjin Patentee after: Tianjin zoyuan New Material Technology Co.,Ltd. Address before: No.13, Baofu Road, Baodi energy saving and environmental protection industrial zone, Baodi District, Tianjin 301800 Patentee before: TIANJIN BAIENWEI NEW MATERIAL TECHNOLOGY Co.,Ltd. |