CN108588596A - A method of improving diamond composite sheet impact resistance can - Google Patents
A method of improving diamond composite sheet impact resistance can Download PDFInfo
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- CN108588596A CN108588596A CN201810371768.8A CN201810371768A CN108588596A CN 108588596 A CN108588596 A CN 108588596A CN 201810371768 A CN201810371768 A CN 201810371768A CN 108588596 A CN108588596 A CN 108588596A
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- diamond
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
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Abstract
The present invention discloses a kind of method of raising diamond composite sheet impact resistance energy, the present invention is synthesized at high temperature under high pressure using diamond compact, by the way that diamond layer is detached with hard alloy substrate in advance, fully release interfacial stress, application pressure is adjusted again, diamond compact is annealed at high temperature, on the one hand reduces the residual stress in diamond layer, on the other hand diamond layer is combined again with hard alloy substrate, achievees the purpose that improve shock resistance.
Description
Technical field
The present invention relates to superhard material field more particularly to a kind of methods improving diamond composite sheet impact resistance energy.
Background technology
Diamond compact is sintered under superhigh temperature, condition of high voltage by diadust and hard alloy substrate,
It is mainly made of hard alloy substrate and sintered polycrystalline diamond layer, both high rigidity, high-wearing feature with diamond
With thermal conductivity, and intensity and toughness with hard alloy are manufacture cutting tool, drilling bit and other wear-resisting works
The ideal material of tool.
Wear-resisting property and shock resistance are most important two technical indicators of diamond compact, the two indexs are phases
Mutually contradictory, the diadust used is thinner, and wear-resisting property improves, and shock resistance declines, conversely, wear resistance decrease,
Shock resistance is promoted, and two performance close relation explanations, the promotion of any performance can bring the promotion of entire properties of product.
With equipment, the progress of technology, the synthesis pressure of diamond compact increasingly increases, and the wear-resisting property of product has
Larger raising can substantially meet probing demand, and as probing advanced depth is continuously increased, formations drilled is increasingly complicated
Change, the shock resistance of diamond compact at products application short slab.In order to improve the impact resistance of diamond compact
Can, designer constantly adjusts diamond powder structure, optimizes hard alloy substrate tooth Shape Design, but can not be kept away in production process
It is little that the intrinsic internal stress exempted from makes product shock resistance be promoted, and therefore, removing the residual stress of product becomes promotion anti-impact
Hit the direct effective way of performance.In most industries, removal residual stress best bet be exactly at high temperature long-time
Annealing, such method is applied can also reduce stress on diamond compact, promote shock resistance, but prolonged high
Warm environment can make the diamond layer Rapid Damage on diamond compact surface, and therefore, diamond compact annealing temperature cannot mistake
Height, this allows for annealing and the effect of de-stress is gone to substantially reduce, even if in this way, annealing each time can still make diamond compact
Performance decline 10% or more.
Therefore, the existing technology needs to be improved and developed.
Invention content
In view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of raising diamond compact shock resistances
The method of performance, it is intended to solve existing diamond compact caused by the different coefficient of expansion between substance caused by residual stress
The problem of shock resistance declines.
Technical scheme is as follows：
A method of improving diamond composite sheet impact resistance can, wherein compound to diamond in 3-6GPa pressure ranges
Piece is made annealing treatment.
The method for improving diamond composite sheet impact resistance energy, wherein described to make a reservation for diamond compact
Pressure range in carry out annealing specifically include：
Diamond is answered into piece in advance and carries out cutting process, obtains diamond layer and hard alloy substrate；Again by the diamond layer
It is assembled with hard alloy substrate, is completed and is placed in pyrophyllite block；
The pyrophyllite block is placed in vacuum drying chamber toast, vacuumize after be put into high pressure apparatus, in scheduled pressure range
It is made annealing treatment.
The method for improving diamond composite sheet impact resistance energy, wherein temperature when annealing is 1100-
1500℃。
The method for improving diamond composite sheet impact resistance energy, wherein the time of annealing is 200-
1000S。
The method for improving diamond composite sheet impact resistance energy, wherein to described by the way of constant temperature, constant pressure
Diamond compact is made annealing treatment.
The method for improving diamond composite sheet impact resistance energy, wherein linear using pressure, temperature and time
The mode of decline makes annealing treatment the diamond compact.
The method for improving diamond composite sheet impact resistance energy, wherein using pressure, temperature and time at ladder
The mode of decline makes annealing treatment the diamond compact.
The method for improving diamond composite sheet impact resistance energy, wherein use and be divided into pressure, temperature and time
The mode that three ladders decline makes annealing treatment the diamond compact.
The method for improving diamond composite sheet impact resistance energy, wherein use and be divided into pressure, temperature and time
The mode that three ladders decline makes annealing treatment the diamond compact, the first ladder constant pressure 5GPa, 1400 DEG C of constant temperature,
Anneal 150S；Second ladder constant pressure 4.5GPa, 1300 DEG C of constant temperature, anneal 150S；Third ladder constant pressure 4GPa, 1200 DEG C of constant temperature,
Anneal 150S.
Advantageous effect：The present invention is synthesized at high temperature under high pressure using diamond compact, can be protected under hyperbaric environment
Diamond layer does not damage this feature because of high temperature, by advance detaching diamond layer with hard alloy, fully discharges interface and answers
Power, then application pressure is adjusted, diamond compact is annealed at high temperature, the remnants on the one hand reduced in diamond layer are answered
On the other hand power again combines diamond layer with hard alloy substrate, achieve the purpose that improve shock resistance.
Description of the drawings
Fig. 1 is shock resistance test result comparison diagram.
Specific implementation mode
The present invention provides a kind of method of raising diamond composite sheet impact resistance energy, to make the purpose of the present invention, technology
Scheme and effect are clearer, clear, and the present invention is described in more detail below.It should be appreciated that described herein specific
Embodiment is only used to explain the present invention, is not intended to limit the present invention.
A kind of method improving diamond composite sheet impact resistance energy provided by the present invention, i.e., exist diamond compact
It is made annealing treatment in the pressure range of 3-6GPa.
As a specific implementation mode of the invention, first, diamond compact blank is selected（It is untreated after synthesis
's）.Diamond compact blank is removed into metal skin, outer diameter is machined to have more 0.5mm, diamond layer grinding than final size
To the allowance of 0.5mm is had more than final size, by electric spark wire cutting machine below composite diamond layer 0.1-0.5mm
Place, diamond layer is detached with hard alloy substrate, that is, does cutting process, then close to the diamond layer cut surface and hard of separation
The all fine grindings of auri body cut surface are handled.
Since the expansion coefficient difference of diamond and hard alloy substrate is larger, the interface of diamond and hard alloy substrate
Very big stress is gathered, by advance detaching diamond layer with hard alloy substrate so that diamond compact interface
The stress at place is fully discharged.
Further, by treated, diamond layer is assembled with hard alloy substrate according to synthesis technology, is completed
It is placed in pyrophyllite block.Wherein, involved diamond layer is assembled into existing skill with hard alloy substrate by synthesis technology
Art is not repeating herein.As an example, assembled two panels diamond compact can be encased in pyrophyllite block, two panels gold
Hard rock layer is staggered relatively, and two panels diamond compact sticks together under high temperature in order to prevent, can be in the diamond of two panels composite sheet
Layer one stratus master slice of middle pad.
Further, the pyrophyllite block is placed in vacuum drying chamber after toasting and is put into cubic hinge press, in scheduled pressure
It is made annealing treatment, the stress inside diamond compact is discharged, to promote diamond compact in strong range
Shock resistance.
Preferably, when being made annealing treatment, the scheduled pressure range is 3-6GPa, and temperature range is 1100-
1500℃。
Specifically, annealing can be taken and be carried out under steady temperature in constant pressure, for example, pressure is set as 3
GPa, temperature setting are 1100 DEG C, and the annealing time is 300S.
In order to obtain preferably annealing effect, the annealing can also use pressure, temperature and time at line
Property decline mode.As an example, the rate that can decline temperature at any time is set as 0.5-2 DEG C/S, the decline of pressure at any time
Rate is set as 0.1-0.4GPa/min.Because temperature declines relatively uniform, the stress release inside diamond compact with pressure
More completely.
Further, although by the way of pressure, the linear decline of temperature and time, good annealing can be obtained
Effect（The stress decrease of diamond compact is larger）, but it is higher to equipment requirement, it needs to be improved existing equipment, consume
When also relatively long.Generally use pressure, temperature and time decline mode at ladder in actual production, i.e., are divided into annealing not
Same stage, each stage correspond to different pressure, temperature.As an example, annealing can be divided into three phases completion, the
One staged pressure is set as 5GPa, and temperature is then set as 1400 DEG C, constant temperature, constant pressure annealing 150S；Second stage pressure is set as
4.5GPa, temperature are then set as 1300 DEG C, constant temperature, constant pressure annealing 150S；Phase III pressure is set as 4GPa, and temperature is then arranged
It is 1200 DEG C, constant temperature, constant pressure annealing 150S.
The technique effect played to the present invention below by embodiment is described in detail.
Embodiment 1
Raw material produces diamond compact by A producers, and 6 synthetic diamond compacts is taken to be processed into a diameter of 16.0mm,
A height of 13.2mm, diamond thickness are 2.0mm, diamond chamfering（45 degree）For 0.3mm.The composite sheet processed is directly carried out
Drop impact is tested.
Embodiment 2
Take 6 with embodiment 1 with batch of diamond compact, be processed into a diameter of 16.5mm, diamond layer is ground to
2.5mm.The composite sheet processed is placed in high-temperature vacuum furnace and calcines 450S, temperature is 1200 DEG C, is taken out certainly after the completion of sintering
It is so cooling, sample is then processed into 1 identical size of same embodiment, carries out drop impact test.
Embodiment 3
Take 6 with embodiment 1 with batch of diamond compact, be processed into a diameter of 16.5mm, diamond layer is ground to
2.5mm.The composite sheet processed is placed in high-temperature vacuum furnace and calcines 450S, temperature is 700 DEG C, and nature is taken out after the completion of sintering
It is cooling, sample is then processed into 1 identical size of same embodiment, carries out drop impact test.
Embodiment 4
Take 6 with embodiment 1 with batch of diamond compact, be processed into a diameter of 16.5mm, diamond layer is ground to
2.5mm.Diamond layer is detached with hard alloy substrate by electric spark wire cutting machine, then cut surface fine grinding is handled.It will add
The good two panels diamond layer of work and two cement carbide substrates are assembled by synthesis technology, obtain two panels diamond compact,
Two panels diamond compact head is met and discussed and is placed in pyrophillite, diamond compact sticks in one in high temperature and pressure in order to prevent
It rises, in the wall mica sheet of two panels diamond compact.Assembled pyrophyllite block is placed in cubic hinge press, divides three sections
It is made annealing treatment.First segment：Constant pressure 5GPa, 1400 DEG C of constant temperature, annealing 150S；Second segment：Constant pressure 4.5GPa, constant temperature 1300
DEG C, annealing 150S；Third section：Constant pressure 3GPa, 1200 DEG C of constant temperature, annealing 150S.The composite sheet of annealing is worked into same embodiment 1
Identical size carries out drop impact test.
Embodiment 5
Take 6 with embodiment 1 with batch of diamond compact, be processed into a diameter of 16.5mm, diamond layer is ground to
2.5mm.Diamond layer is detached with hard alloy substrate by electric spark wire cutting machine, then cut surface fine grinding is handled.It will add
The good two panels diamond layer of work and two cement carbide substrates are assembled by synthesis technology, obtain two panels diamond compact,
Two panels diamond compact head is met and discussed and is placed in pyrophillite, diamond compact sticks in one in high temperature and pressure in order to prevent
It rises, in the wall mica sheet of two panels diamond compact..Assembled pyrophyllite block is placed in cubic hinge press, is used
The mode of the linear decline of pressure, temperature and time is made annealing treatment, and 1400 DEG C of initial pressure 6GPa, temperature, pressure is at any time
Between fall off rate be set as 0.1GPa/min, the rate that temperature declines at any time is set as 0.5 DEG C/S, processing time 18min.It will move back
The composite sheet of fire is worked into the identical size with embodiment 1, carries out drop impact test.
Referring to Fig. 1, it is above-described embodiment 1-5 shock resistance test result figures.As shown in Figure 1, embodiment 1 is that do not have
There is the diamond compact impact resistance test result by annealing.In annealing, temperature is increased under normal pressure
After 700 DEG C, the shock resistance of diamond compact drastically declines, such as embodiment 2（Temperature is increased to 1200 DEG C under normal pressure）.
Embodiment 3 is diamond compact after normal pressure, temperature make annealing treatment at 700 DEG C, diamond composite sheet impact resistance test
As a result, its performance boost compared with the result of embodiment 1 is not apparent.Embodiment 4-5 is that diamond compact uses echelon
And after temperature is made annealing treatment with pressure linear decline, diamond composite sheet impact resistance test as a result, itself and embodiment
The test result of 1-3 is fairly obvious compared to shock resistance promotion, because with the increase of annealing time, in diamond compact
The stress in portion should also reduce therewith also with reduction, required annealing temperature and required pressure, avoid temperature excessively high to gold
Hard rock bisque damages, and the cooperation of pressure and temperature when annealing is to influence the key factor of annealing effect, i.e., certain
At a temperature of to coordinate corresponding pressure, stress causes composite diamond piece while be released after just can guarantee annealing
Adverse effect it is minimum, and be segmented more, be finally reached segmentation i.e. linear relationship many times, effect is best, but the width promoted
It spends limited.
In conclusion a kind of method improving diamond composite sheet impact resistance energy provided by the invention, the present invention utilize
Diamond compact synthesizes at high temperature under high pressure, can protect diamond layer not because high temperature damages this spy under hyperbaric environment
Point applies pressure by adjusting, diamond compact is annealed at high temperature, reduces diamond layer residual stress, and logical
It is detached after in advance to cut diamond layer with matrix, fully discharges interfacial stress, achieve the purpose that improve its shock resistance.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect range.
Claims (9)
1. a kind of method improving diamond composite sheet impact resistance energy, which is characterized in that gold in 3-6GPa pressure ranges
Hard rock composite sheet is made annealing treatment.
2. it is according to claim 1 improve diamond composite sheet impact resistance can method, which is characterized in that it is described will be golden
Hard rock composite sheet carries out annealing in scheduled pressure range and specifically includes：
Diamond is answered into piece in advance and carries out cutting process, obtains diamond layer and hard alloy substrate；Again by the diamond layer
It is assembled with hard alloy substrate, is completed and is placed in pyrophyllite block；
The pyrophyllite block is placed in vacuum drying chamber toast, vacuumize after be put into high pressure apparatus, in scheduled pressure range
It is made annealing treatment.
3. the method according to claim 1 for improving diamond composite sheet impact resistance energy, which is characterized in that annealing
When temperature be 1100-1500 DEG C.
4. the method according to claim 1 for improving diamond composite sheet impact resistance energy, which is characterized in that annealing
Time be 200-1000S.
5. the method according to claim 1 for improving diamond composite sheet impact resistance energy, which is characterized in that use constant temperature
The mode of constant pressure makes annealing treatment the diamond compact.
6. the method according to claim 1 for improving diamond composite sheet impact resistance energy, which is characterized in that using pressure
By force, the mode of the linear decline of temperature and time makes annealing treatment the diamond compact.
7. the method according to claim 1 for improving diamond composite sheet impact resistance energy, which is characterized in that using pressure
By force, temperature and time makes annealing treatment the diamond compact at the mode that ladder declines.
8. the method according to claim 7 for improving diamond composite sheet impact resistance energy, which is characterized in that use will press
By force, temperature and time is divided into the mode that three ladders decline and is made annealing treatment to the diamond compact.
9. the method according to claim 8 for improving diamond composite sheet impact resistance energy, which is characterized in that use will press
By force, temperature and time is divided into the mode that three ladders decline and is made annealing treatment to the diamond compact, and the first ladder is permanent
5GPa is pressed, 1400 DEG C of constant temperature, anneal 150S；Second ladder constant pressure 4.5GPa, 1300 DEG C of constant temperature, anneal 150S；Third ladder is permanent
4GPa is pressed, 1200 DEG C of constant temperature, anneal 150S.
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| CN201810371768.8A CN108588596B (en) | 2018-04-24 | 2018-04-24 | Method for improving shock resistance of diamond compact |
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| CN201810371768.8A CN108588596B (en) | 2018-04-24 | 2018-04-24 | Method for improving shock resistance of diamond compact |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908319A (en) * | 2022-04-22 | 2022-08-16 | 宁波杭州湾新材料研究院 | Diamond-alumina composite film and preparation method thereof |
| CN115283681A (en) * | 2022-08-03 | 2022-11-04 | 苏州思珀利尔工业技术有限公司 | Preparation method of low-internal-stress diamond compact |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999002289A1 (en) * | 1997-07-08 | 1999-01-21 | Sandvik Ab (Publ) | Method for manufacturing inserts with holes for clamping |
| US20110072730A1 (en) * | 2008-06-04 | 2011-03-31 | Humphrey Samkelo Lungisani Sithebe | Method for Producing a PCD Compact |
| CN103623747A (en) * | 2013-12-03 | 2014-03-12 | 深圳市海明润实业有限公司 | PDC with high thermal conductivity and preparation method thereof |
| CN107362750A (en) * | 2017-07-24 | 2017-11-21 | 中南钻石有限公司 | A kind of composite polycrystal-diamond and its Synthetic block |
-
2018
- 2018-04-24 CN CN201810371768.8A patent/CN108588596B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999002289A1 (en) * | 1997-07-08 | 1999-01-21 | Sandvik Ab (Publ) | Method for manufacturing inserts with holes for clamping |
| US20110072730A1 (en) * | 2008-06-04 | 2011-03-31 | Humphrey Samkelo Lungisani Sithebe | Method for Producing a PCD Compact |
| CN103623747A (en) * | 2013-12-03 | 2014-03-12 | 深圳市海明润实业有限公司 | PDC with high thermal conductivity and preparation method thereof |
| CN107362750A (en) * | 2017-07-24 | 2017-11-21 | 中南钻石有限公司 | A kind of composite polycrystal-diamond and its Synthetic block |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908319A (en) * | 2022-04-22 | 2022-08-16 | 宁波杭州湾新材料研究院 | Diamond-alumina composite film and preparation method thereof |
| CN115283681A (en) * | 2022-08-03 | 2022-11-04 | 苏州思珀利尔工业技术有限公司 | Preparation method of low-internal-stress diamond compact |
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| CN108588596B (en) | 2020-04-28 |
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