CN109913729A - A kind of synthetic method of hard alloy substrate and composite polycrystal-diamond - Google Patents
A kind of synthetic method of hard alloy substrate and composite polycrystal-diamond Download PDFInfo
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- CN109913729A CN109913729A CN201910182971.5A CN201910182971A CN109913729A CN 109913729 A CN109913729 A CN 109913729A CN 201910182971 A CN201910182971 A CN 201910182971A CN 109913729 A CN109913729 A CN 109913729A
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Abstract
The present invention provides the synthetic method of a kind of hard alloy substrate and composite polycrystal-diamond, and described matrix material is WC-Ti-Zr-Co hard alloy；The synthetic method uses cubic hinge press high temperature and high pressure method；The diadust, WC-Ti-Zr-Co hard alloy substrate, pyrophyllite Synthetic block are pre-processed；The diadust, WC-Ti-Zr-Co hard alloy substrate and pyrophyllite Synthetic block are assembled；The pyrophyllite Synthetic block being completed is subjected to high temperature and pressure sintering；The composite polycrystal-diamond that sintering is completed is machined out post-processing afterwards.Compared with conventional rigid alloy substrate, the WC-Ti-Zr-Co hard alloy substrate that the present invention uses can increase the bond strength of matrix and dimond synneusis, promote the crucial military service performance such as service life, stability of composite polycrystal-diamond.
Description
Technical field
The present invention relates to composite polycrystal-diamond manufacturing fields, more particularly, to a kind of WC-Ti-Zr-Co hard alloy
The material composition of matrix designs, and the synthetic method of composite polycrystal-diamond is prepared by the hard alloy substrate.
Background technique
Composite polycrystal-diamond (Polycrystalline Diamond Compact, PDC) is diadust and hard
Composite material made of matter alloy substrate is sintered under high-temperature and high-pressure conditions, with the high wearability of polycrystalline diamond and firmly
The high impact properties of matter alloy, and the easy weldability of hard alloy solves polycrystalline diamond and is difficult in conjunction with other materials
Problem, therefore composite polycrystal-diamond is the ideal material for manufacturing cutting tool, drilling bit and other wear resistant tools.
Polycrystalline diamond compact bit (Polycrystalline Diamond Compact bit) is using plycrystalline diamond gold
A kind of drilling tool of the hard rock composite sheet as cutting tooth, composite polycrystal-diamond are connected by way of soldering with bit body
It connects.Polycrystalline diamond compact bit has many advantages, such as that efficiency of breaking rock is high, drilling speed is fast, drilling depth is more, the service life is long, in oil drilling work
It is played an important role in industry.Current 70% or more polycrystalline diamond compact bit failure is caused because of cutting tooth damage
's.Cutting tooth of the composite polycrystal-diamond as drill bit, performance largely determine drill bit drilling effect and
Service life, and it is one of improper failure mode of cutting tooth that wherein dimond synneusis layer, which falls off, this is also field of oil drilling
In cause the principal element of economic loss.Composite polycrystal-diamond is synthesized using high temperature and high pressure method at present, uses cubic pressure
Machine is as super-pressure synthesis device, and using cobalt content is 13% hard alloy as matrix, and hard alloy substrate is micro- with diamond
Powder be assemblied in pyrophyllite Synthetic block after being assembled in metallic shield cup and be placed in cubic hinge press synthesis it is intracavitary, in high temperature and pressure
Lower synthesis.Relative to traditional composite polycrystal-diamond, the hard alloy substrate of titanium containing zirconium provided by the present invention facilitates
Matrix section in conjunction with dimond synneusis forms the high-intensitive carbide such as TiC and ZrC, thus significantly increase hard alloy substrate with
The bond strength of dimond synneusis layer, compared with traditional WC-13Co hard alloy substrate, WC-Ti- of the present invention
Zr-Co hard alloy substrate can significantly extend the service life of composite polycrystal-diamond, reduce because of the improper mistake of cutting tooth
Economic loss caused by effect.
Summary of the invention
In view of this, the present invention will provide a kind of conjunction of WC-Ti-Zr-Co hard alloy substrate composite polycrystal-diamond
At method and material system, and its hard alloy substrate of composite polycrystal-diamond of method synthesis of the invention and diamond are poly-
Crystal layer bond strength is good.
The technical solution of the present invention is as follows:
A kind of hard alloy substrate, the hard alloy substrate are WC-Ti-Zr-Co hard alloy, A) choose matrix: the base
Body material is WC-Ti-Zr-Co hard alloy；Wherein mass content of the mass content of Co equal to 6% ~ 20%, Ti is 1% ~ 15%,
The mass content that the mass content of Zr is 0% ~ 15%, WC is 50% ~ 93%.
Preferably, in the hard alloy substrate, the mass content of the mass content 8-16%, Ti of Co are 1% ~ 10%, Zr's
The mass content that mass content is 0% ~ 10%, WC is 64% ~ 91%；The quality of the mass content 10-15%, Ti of more preferably Co contain
The mass content that the mass content that amount is 3% ~ 10%, Zr is 2% ~ 10%, WC is 65% ~ 85%.
The mass content 12 ~ 15% of most preferably Co, the mass content that the mass content of Ti is 4% ~ 6%, Zr are 4% ~ 6%, WC
Mass content be 73% ~ 80%.
A kind of synthetic method of composite polycrystal-diamond, which comprises the following steps:
A) choose matrix: described matrix material is WC-Ti-Zr-Co hard alloy substrate described in claim 1；
In the present invention, the step A) quality of the mass content 6-20%, Ti of Co in the WC-Ti-Zr-Co hard alloy
The mass content that the mass content that content is 1% ~ 15%, Zr is 0% ~ 15%, WC is 50% ~ 93%.The present invention closes above-mentioned hard
The source of gold and specific powder parameter include but are not limited to manufacturing process: it is prepared using powder metallurgy process, it will
WC, Ti, Zr, Co powder and paraffin and normal heptane or similar solvent carry out ball milling mixing, drying, compacting, de-waxing, vacuum or guarantor
Shield property atmosphere (argon gas, nitrogen) is sintered, processing and surface cleaning are handled.
Further, WC powder granularity is 0.2-5 microns in WC, Ti, Zr, Co powder；Ti powder granularity is 0.2-5
Micron；Zr powder granularity is 0.2-5 microns；Co powder granularity is 0.2-5 microns.
B pretreatment and cleaning) are machined out to matrix, purified treatment is carried out to micro mist, pyrophyllite Synthetic block is carried out
Heat treatment；
In the present invention, the step B) described in machining pretreatment and cleaning it is pre- including cylindrical grinding, sandblasting, ultrasonic cleaning etc.
Processing, purified treatment include the pretreatment such as vacuum reduction, and heat treatment includes the pretreatment such as baking.
C pyrophyllite Synthetic block) is assembled；
In the present invention, the step C) for pyrophyllite Synthetic block package assembly without limit.
D high temperature and pressure sintering) is carried out to the synthetic material using the high people's high pressure work sintering skill of cubic hinge press；
In the present invention, the step D) for cubic hinge press high temperature and pressure sintering process without limit, preferably 5 ~
5.5GPa, 1500 DEG C ~ 1600 DEG C, 10 ~ 30min.
E the sintered composite polycrystal-diamond of high temperature and pressure) is machined out post-processing；
In the present invention, the step E) synthesis composite polycrystal-diamond after, it is carried out sandblasting, rounded corner etc. machining after
Processing.
Compared with prior art, the present invention uses base of the WC-Ti-Zr-Co hard alloy as composite polycrystal-diamond
Body contributes to form TiC and ZrC phase, to be obviously improved the crucial military service performance such as its bond strength, service life.
Detailed description of the invention
Fig. 1 is composite polycrystal-diamond structural schematic diagram.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution of the present invention is clearly and completely described, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
Embodiment 1
It is the structure of composite polycrystal-diamond, including dimond synneusis layer 1 and hard alloy substrate 2 in conjunction with Fig. 1.
The present embodiment provides a kind of hard alloy substrate, described matrix material is WC-Ti-Co hard alloy, wherein Co
The mass content that the mass content that mass content is 6%, Ti is 1%, WC is 93%.
A kind of synthetic method of composite polycrystal-diamond, comprising the following steps:
A) choose matrix: described matrix material is above-mentioned WC-Ti-Co hard alloy substrate；
Described matrix material is WC-Ti-Co hard alloy, and the mass content that wherein mass content of Co is 6%, Ti is 1%, WC's
Mass content is 93%.Hard alloy is prepared using powder metallurgy process, by WC, Ti, Co powder and paraffin and normal heptane
Carry out ball milling mixing, drying, compacting, de-waxing, vacuum-sintering, processing and surface cleaning processing.
Further, WC powder granularity is 1 micron in WC, Ti, Co powder；Ti powder granularity is 1 micron；Co powder
Granularity is 1 micron.
B cylindrical grinding, sandblasting, ultrasonic cleaning) are carried out to matrix, vacuum reduction is carried out to the diadust that granularity is W10
Purified treatment carries out baking heat treatment to pyrophyllite Synthetic block；
C pyrophyllite Synthetic block) is assembled, wherein hard alloy substrate diameter 16mm, height 11mm, diamond layer thickness 2mm；
D) use cubic hinge press high people's high pressure work sintering skill to the synthetic material carry out high temperature and pressure sintering sintering process for
5.5GPa,1500℃,15min；
E the sintered composite polycrystal-diamond of high temperature and pressure) is subjected to sandblasting, rounded corner；
Embodiment 2
It is the structure of composite polycrystal-diamond, including dimond synneusis layer 1 and hard alloy substrate 2 in conjunction with Fig. 1.
The present embodiment provides a kind of hard alloy substrate, described matrix material is WC-Ti-Co hard alloy, wherein Co
The mass content that the mass content that mass content is 6%, Ti is 15%, WC is 79%.
A kind of synthetic method of composite polycrystal-diamond, comprising the following steps:
A) choose matrix: described matrix material is above-mentioned WC-Ti-Co hard alloy substrate；
Described matrix material is WC-Ti-Co hard alloy, and the mass content that wherein mass content of Co is 6%, Ti is 15%, WC
Mass content be 79%.Hard alloy is prepared using powder metallurgy process, by WC, Ti, Co powder and paraffin and positive heptan
Alkane carries out ball milling mixing, drying, compacting, de-waxing, vacuum-sintering, processing and surface cleaning processing.
Further, WC powder granularity is 1 micron in WC, Ti, Co powder；Ti powder granularity is 1 micron；Co powder
Granularity is 1 micron.
B cylindrical grinding, sandblasting, ultrasonic cleaning) are carried out to matrix, vacuum reduction is carried out to the diadust that granularity is W10
Purified treatment carries out baking heat treatment to pyrophyllite Synthetic block；
C pyrophyllite Synthetic block) is assembled, wherein hard alloy substrate diameter 16mm, height 11mm, diamond layer thickness 2mm；
D) use cubic hinge press high people's high pressure work sintering skill to the synthetic material carry out high temperature and pressure sintering sintering process for
5.5GPa,1500℃,15min；
E the sintered composite polycrystal-diamond of high temperature and pressure) is subjected to sandblasting, rounded corner；
Embodiment 3
It is the structure of composite polycrystal-diamond, including dimond synneusis layer 1 and hard alloy substrate 2 in conjunction with Fig. 1.
The present embodiment provides a kind of hard alloy substrate, described matrix material is WC-Ti-Co hard alloy, wherein Co
The mass content that the mass content that mass content is 20%, Ti is 1%, WC is 79%.
A kind of synthetic method of composite polycrystal-diamond, comprising the following steps:
A) choose matrix: described matrix material is above-mentioned WC-Ti-Co hard alloy substrate；
Described matrix material is WC-Ti-Co hard alloy, and the mass content that wherein mass content of Co is 20%, Ti is 1%, WC
Mass content be 79%.Hard alloy is prepared using powder metallurgy process, by WC, Ti, Co powder and paraffin and positive heptan
Alkane carries out ball milling mixing, drying, compacting, de-waxing, vacuum-sintering, processing and surface cleaning processing.
Further, WC powder granularity is 1 micron in WC, Ti, Co powder；Ti powder granularity is 1 micron；Co powder
Granularity is 1 micron.
B cylindrical grinding, sandblasting, ultrasonic cleaning) are carried out to matrix, vacuum reduction is carried out to the diadust that granularity is W10
Purified treatment carries out baking heat treatment to pyrophyllite Synthetic block；
C pyrophyllite Synthetic block) is assembled, wherein hard alloy substrate diameter 16mm, height 11mm, diamond layer thickness 2mm；
D) use cubic hinge press high people's high pressure work sintering skill to the synthetic material carry out high temperature and pressure sintering sintering process for
5.5GPa,1500℃,15min；
E the sintered composite polycrystal-diamond of high temperature and pressure) is subjected to sandblasting, rounded corner；
Embodiment 4
It is the structure of composite polycrystal-diamond, including dimond synneusis layer 1 and hard alloy substrate 2 in conjunction with Fig. 1.
The present embodiment provides a kind of hard alloy substrate, described matrix material is WC-Ti-Zr-Co hard alloy, wherein Co
Mass content be 8%, Ti mass content be 1%, Zr mass content be 10%, WC mass content be 81%.
A kind of synthetic method of composite polycrystal-diamond, comprising the following steps:
A) choose matrix: described matrix material is above-mentioned WC-Ti-Zr-Co hard alloy substrate；
Described matrix material is WC-Ti-Zr-Co hard alloy, and the mass content that wherein mass content of Co is 8%, Ti is 1%,
The mass content that the mass content of Zr is 10%, WC is 81%.Hard alloy is prepared using powder metallurgy process, by WC, Ti,
Zr, Co powder and paraffin and normal heptane carry out ball milling mixing, drying, compacting, de-waxing, vacuum-sintering, processing and surface cleaning
Processing.
Further, WC powder granularity is 1 micron in WC, Ti, Zr, Co powder；Ti powder granularity is 1 micron；Zr
Powder granularity is 1 micron；Co powder granularity is 1 micron.
B cylindrical grinding, sandblasting, ultrasonic cleaning) are carried out to matrix, vacuum reduction is carried out to the diadust that granularity is W10
Purified treatment carries out baking heat treatment to pyrophyllite Synthetic block；
C pyrophyllite Synthetic block) is assembled, wherein hard alloy substrate diameter 16mm, height 11mm, diamond layer thickness 2mm；
D) use cubic hinge press high people's high pressure work sintering skill to the synthetic material carry out high temperature and pressure sintering sintering process for
5.5GPa,1500℃,15min；
E the sintered composite polycrystal-diamond of high temperature and pressure) is subjected to sandblasting, rounded corner；
Embodiment 5
It is the structure of composite polycrystal-diamond, including dimond synneusis layer 1 and hard alloy substrate 2 in conjunction with Fig. 1.
The present embodiment provides a kind of hard alloy substrate, described matrix material is WC-Ti-Co hard alloy, wherein Co
The mass content that the mass content that mass content is 8%, Ti is 10%, WC is 82%.
A kind of synthetic method of composite polycrystal-diamond, comprising the following steps:
A) choose matrix: described matrix material is above-mentioned WC-Ti-Co hard alloy substrate；Described matrix material is WC-Ti-
Co hard alloy, the mass content that the mass content that wherein mass content of Co is 8%, Ti is 10%, WC is 82%.Hard alloy
It is prepared using powder metallurgy process, WC, Ti, Co powder and paraffin and normal heptane is subjected to ball milling mixing, drying, pressure
System, de-waxing, vacuum-sintering, processing and surface cleaning processing.
Further, WC powder granularity is 1 micron in WC, Ti, Co powder；Ti powder granularity is 1 micron；Co powder
Granularity is 1 micron.
B cylindrical grinding, sandblasting, ultrasonic cleaning) are carried out to matrix, vacuum reduction is carried out to the diadust that granularity is W10
Purified treatment carries out baking heat treatment to pyrophyllite Synthetic block；
C pyrophyllite Synthetic block) is assembled, wherein hard alloy substrate diameter 16mm, height 11mm, diamond layer thickness 2mm；
D) use cubic hinge press high people's high pressure work sintering skill to the synthetic material carry out high temperature and pressure sintering sintering process for
5.5GPa,1500℃,15min；
E the sintered composite polycrystal-diamond of high temperature and pressure) is subjected to sandblasting, rounded corner；
Embodiment 6
It is the structure of composite polycrystal-diamond, including dimond synneusis layer 1 and hard alloy substrate 2 in conjunction with Fig. 1.
The present embodiment provides a kind of hard alloy substrate, described matrix material is WC-Ti-Co hard alloy, wherein Co
The mass content that the mass content that mass content is 16%, Ti is 1%, WC is 83%.
A kind of synthetic method of composite polycrystal-diamond, comprising the following steps:
A) choose matrix: described matrix material is above-mentioned WC-Ti-Co hard alloy substrate；Described matrix material is WC-Ti-
Co hard alloy, the mass content that the mass content that wherein mass content of Co is 16%, Ti is 1%, WC is 83%.Hard alloy
It is prepared using powder metallurgy process, WC, Ti, Co powder and paraffin and normal heptane is subjected to ball milling mixing, drying, pressure
System, de-waxing, vacuum-sintering, processing and surface cleaning processing.
Further, WC powder granularity is 1 micron in WC, Ti, Co powder；Ti powder granularity is 1 micron；Co powder
Granularity is 1 micron.
B cylindrical grinding, sandblasting, ultrasonic cleaning) are carried out to matrix, vacuum reduction is carried out to the diadust that granularity is W10
Purified treatment carries out baking heat treatment to pyrophyllite Synthetic block；
C pyrophyllite Synthetic block) is assembled, wherein hard alloy substrate diameter 16mm, height 11mm, diamond layer thickness 2mm；
D) use cubic hinge press high people's high pressure work sintering skill to the synthetic material carry out high temperature and pressure sintering sintering process for
5.5GPa,1500℃,15min；
E the sintered composite polycrystal-diamond of high temperature and pressure) is subjected to sandblasting, rounded corner；
Embodiment 7
It is the structure of composite polycrystal-diamond, including dimond synneusis layer 1 and hard alloy substrate 2 in conjunction with Fig. 1.
The present embodiment provides a kind of hard alloy substrate, described matrix material is WC-Ti-Zr-Co hard alloy, wherein Co
Mass content be 10%, Ti mass content be 3%, Zr mass content be 2%, WC mass content be 85%.
A kind of synthetic method of composite polycrystal-diamond, comprising the following steps:
A) choose matrix: described matrix material is above-mentioned WC-Ti-Zr-Co hard alloy substrate；Described matrix material is WC-
Ti-Zr-Co hard alloy, the mass content that the mass content that wherein mass content of Co is 10%, Ti is 3%, Zr is 2%, WC's
Mass content is 85%.Hard alloy is prepared using powder metallurgy process, by WC, Ti, Zr, Co powder and paraffin and just
Heptane carries out ball milling mixing, drying, compacting, de-waxing, vacuum-sintering, processing and surface cleaning processing.
Further, WC powder granularity is 1 micron in WC, Ti, Zr, Co powder；Ti powder granularity is 1 micron；Zr
Powder granularity is 1 micron；Co powder granularity is 1 micron.
B cylindrical grinding, sandblasting, ultrasonic cleaning) are carried out to matrix, vacuum reduction is carried out to the diadust that granularity is W10
Purified treatment carries out baking heat treatment to pyrophyllite Synthetic block；
C pyrophyllite Synthetic block) is assembled, wherein hard alloy substrate diameter 16mm, height 11mm, diamond layer thickness 2mm；
D) use cubic hinge press high people's high pressure work sintering skill to the synthetic material carry out high temperature and pressure sintering sintering process for
5.5GPa,1500℃,15min；
E the sintered composite polycrystal-diamond of high temperature and pressure) is subjected to sandblasting, rounded corner；
Embodiment 8
It is the structure of composite polycrystal-diamond, including dimond synneusis layer 1 and hard alloy substrate 2 in conjunction with Fig. 1.
The present embodiment provides a kind of hard alloy substrate, described matrix material is WC-Ti-Zr-Co hard alloy, wherein Co
Mass content be 15%, Ti mass content be 3%, Zr mass content be 2%, WC mass content be 80%.
A kind of synthetic method of composite polycrystal-diamond, comprising the following steps:
A) choose matrix: described matrix material is above-mentioned WC-Ti-Zr-Co hard alloy substrate；Described matrix material is WC-
Ti-Zr-Co hard alloy, the mass content that the mass content that wherein mass content of Co is 15%, Ti is 3%, Zr is 2%, WC's
Mass content is 80%.Hard alloy is prepared using powder metallurgy process, by WC, Ti, Zr, Co powder and paraffin and just
Heptane carries out ball milling mixing, drying, compacting, de-waxing, vacuum-sintering, processing and surface cleaning processing.
Further, WC powder granularity is 1 micron in WC, Ti, Zr, Co powder；Ti powder granularity is 1 micron；Zr
Powder granularity is 1 micron；Co powder granularity is 1 micron.
B cylindrical grinding, sandblasting, ultrasonic cleaning) are carried out to matrix, vacuum reduction is carried out to the diadust that granularity is W10
Purified treatment carries out baking heat treatment to pyrophyllite Synthetic block；
C pyrophyllite Synthetic block) is assembled, wherein hard alloy substrate diameter 16mm, height 11mm, diamond layer thickness 2mm；
D) use cubic hinge press high people's high pressure work sintering skill to the synthetic material carry out high temperature and pressure sintering sintering process for
5.5GPa,1500℃,15min；
E the sintered composite polycrystal-diamond of high temperature and pressure) is subjected to sandblasting, rounded corner；
Embodiment 9
It is the structure of composite polycrystal-diamond, including dimond synneusis layer 1 and hard alloy substrate 2 in conjunction with Fig. 1.
The present embodiment provides a kind of hard alloy substrate, described matrix material is WC-Ti-Zr-Co hard alloy, wherein Co
Mass content be 10%, Ti mass content be 10%, Zr mass content be 2%, WC mass content be 78%.
A kind of synthetic method of composite polycrystal-diamond, comprising the following steps:
A) choose matrix: described matrix material is above-mentioned WC-Ti-Zr-Co hard alloy substrate；Described matrix material is WC-
Ti-Zr-Co hard alloy, the mass content that the mass content that wherein mass content of Co is 10%, Ti is 10%, Zr is 2%, WC
Mass content be 78%.Hard alloy is prepared using powder metallurgy process, by WC, Ti, Zr, Co powder and paraffin and
Normal heptane carries out ball milling mixing, drying, compacting, de-waxing, vacuum-sintering, processing and surface cleaning processing.
Further, WC powder granularity is 1 micron in WC, Ti, Zr, Co powder；Ti powder granularity is 1 micron；Zr
Powder granularity is 1 micron；Co powder granularity is 1 micron.
B cylindrical grinding, sandblasting, ultrasonic cleaning) are carried out to matrix, vacuum reduction is carried out to the diadust that granularity is W10
Purified treatment carries out baking heat treatment to pyrophyllite Synthetic block；
C pyrophyllite Synthetic block) is assembled, wherein hard alloy substrate diameter 16mm, height 11mm, diamond layer thickness 2mm；
D) use cubic hinge press high people's high pressure work sintering skill to the synthetic material carry out high temperature and pressure sintering sintering process for
5.5GPa,1500℃,15min；
E the sintered composite polycrystal-diamond of high temperature and pressure) is subjected to sandblasting, rounded corner；
Embodiment 10
It is the structure of composite polycrystal-diamond, including dimond synneusis layer 1 and hard alloy substrate 2 in conjunction with Fig. 1.
The present embodiment provides a kind of hard alloy substrate, described matrix material is WC-Ti-Zr-Co hard alloy, wherein Co
Mass content be 12%, Ti mass content be 4%, Zr mass content be 4%, WC mass content be 80%.
A kind of synthetic method of composite polycrystal-diamond, comprising the following steps:
A) choose matrix: described matrix material is above-mentioned WC-Ti-Zr-Co hard alloy substrate；Described matrix material is WC-
Ti-Zr-Co hard alloy, the mass content that the mass content that wherein mass content of Co is 12%, Ti is 4%, Zr is 4%, WC's
Mass content is 80%.Hard alloy is prepared using powder metallurgy process, by WC, Ti, Zr, Co powder and paraffin and just
Heptane carries out ball milling mixing, drying, compacting, de-waxing, vacuum-sintering, processing and surface cleaning processing.
Further, WC powder granularity is 1 micron in WC, Ti, Zr, Co powder；Ti powder granularity is 1 micron；Zr
Powder granularity is 1 micron；Co powder granularity is 1 micron.
B cylindrical grinding, sandblasting, ultrasonic cleaning) are carried out to matrix, vacuum reduction is carried out to the diadust that granularity is W10
Purified treatment carries out baking heat treatment to pyrophyllite Synthetic block；
C pyrophyllite Synthetic block) is assembled, wherein hard alloy substrate diameter 16mm, height 11mm, diamond layer thickness 2mm；
D) use cubic hinge press high people's high pressure work sintering skill to the synthetic material carry out high temperature and pressure sintering sintering process for
5.5GPa,1500℃,15min；
E the sintered composite polycrystal-diamond of high temperature and pressure) is subjected to sandblasting, rounded corner；
Embodiment 11
It is the structure of composite polycrystal-diamond, including dimond synneusis layer 1 and hard alloy substrate 2 in conjunction with Fig. 1.
The present embodiment provides a kind of hard alloy substrate, described matrix material is WC-Ti-Zr-Co hard alloy, wherein Co
Mass content be 13%, Ti mass content be 5%, Zr mass content be 5%, WC mass content be 77%.
A kind of synthetic method of composite polycrystal-diamond, comprising the following steps:
A) choose matrix: described matrix material is above-mentioned WC-Ti-Zr-Co hard alloy substrate；Described matrix material is WC-
Ti-Zr-Co hard alloy, the mass content that the mass content that wherein mass content of Co is 13%, Ti is 5%, Zr is 5%, WC's
Mass content is 77%.Hard alloy is prepared using powder metallurgy process, by WC, Ti, Zr, Co powder and paraffin and just
Heptane carries out ball milling mixing, drying, compacting, de-waxing, vacuum-sintering, processing and surface cleaning processing.
Further, WC powder granularity is 1 micron in WC, Ti, Zr, Co powder；Ti powder granularity is 1 micron；Zr
Powder granularity is 1 micron；Co powder granularity is 1 micron.
B cylindrical grinding, sandblasting, ultrasonic cleaning) are carried out to matrix, vacuum reduction is carried out to the diadust that granularity is W10
Purified treatment carries out baking heat treatment to pyrophyllite Synthetic block；
C pyrophyllite Synthetic block) is assembled, wherein hard alloy substrate diameter 16mm, height 11mm, diamond layer thickness 2mm；
D) use cubic hinge press high people's high pressure work sintering skill to the synthetic material carry out high temperature and pressure sintering sintering process for
5.5GPa,1500℃,15min；
E the sintered composite polycrystal-diamond of high temperature and pressure) is subjected to sandblasting, rounded corner；
Comparative example
It is the structure of composite polycrystal-diamond, including dimond synneusis layer 1 and hard alloy substrate 2 in conjunction with Fig. 1.
This comparative example provides a kind of hard alloy substrate, and described matrix material is WC-Co hard alloy, wherein the quality of Co
The mass content that content is 13%, WC is 87%.
A kind of synthetic method of composite polycrystal-diamond, comprising the following steps:
A) choose matrix: described matrix material is above-mentioned WC-Co hard alloy matrix；Described matrix material is WC-Co hard
Alloy, the mass content that wherein mass content of Co is 13%, WC is 87%.Hard alloy uses powder metallurgy process system
It is standby, WC, Co powder and paraffin and normal heptane are subjected to ball milling mixing, drying, compacting, de-waxing, vacuum-sintering, processing and surface
Purified treatment.
Further, WC powder granularity is 1 micron in WC, Co powder；Co powder granularity is 1 micron.
B cylindrical grinding, sandblasting, ultrasonic cleaning) are carried out to matrix, vacuum reduction is carried out to the diadust that granularity is W10
Purified treatment carries out baking heat treatment to pyrophyllite Synthetic block；
C pyrophyllite Synthetic block) is assembled, wherein hard alloy substrate diameter 16mm, height 11mm, diamond layer thickness 2mm；
D) use cubic hinge press high people's high pressure work sintering skill to the synthetic material carry out high temperature and pressure sintering sintering process for
5.5GPa,1500℃,15min；
E the sintered composite polycrystal-diamond of high temperature and pressure) is subjected to sandblasting, rounded corner；
Falling ball method experiment test is carried out to the performance for the composite polycrystal-diamond that the embodiment of the present invention 1 ~ 11 and comparative example synthesize.
It is respectively wherein 50mm and 0.511kg using the diameter of steel ball and quality, steel ball is freely fallen from 200mm eminence, impacts sample
Same test point, until sample surfaces start cracked, record number of shocks.The performance of each embodiment is by this
The average ball falling impact number of 5 samples of embodiment is measured.Test result is shown in Table 1.
The average ball falling impact number of the composite polycrystal-diamond of 1 embodiment of the present invention of table synthesis
Each sample falling ball impact test test result of embodiment compares and can obtain, and uses WC-Ti-Zr-Co hard alloy substrate can be with
It is obviously improved the shock resistance of composite polycrystal-diamond, WC-Ti-Zr-Co system hard alloy substrate has been fully demonstrated and has existed
Advantage in composite polycrystal-diamond field.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.It is noted that the technical characteristic being not described in detail in the present invention, it can be by appointing
One prior art is realized.
Claims (5)
1. a kind of hard alloy substrate, which is characterized in that the hard alloy substrate is WC-Ti-Zr-Co hard alloy, wherein
It is the mass content of 0% ~ 15%, WC that mass content of the mass content of Co equal to 6% ~ 20%, Ti, which is the mass content of 1% ~ 15%, Zr,
It is 50% ~ 93%.
2. a kind of synthetic method of composite polycrystal-diamond, which comprises the following steps:
A) choose matrix: described matrix material is WC-Ti-Zr-Co hard alloy substrate described in claim 1；
B) to matrix be machined out pretreatment and cleaning, to diadust carry out purified treatment, to pyrophyllite Synthetic block into
Row heat treatment；
C pyrophyllite Synthetic block) is assembled；
D high temperature and pressure sintering) is carried out to the synthetic material using cubic hinge press high temperature and pressure sintering process；
E the sintered composite polycrystal-diamond of high temperature and pressure) is machined out post-processing.
3. the synthetic method of composite polycrystal-diamond according to claim 2, which is characterized in that the hard alloy substrate
It is prepared using powder metallurgy process, WC, Ti, Zr, Co powder and paraffin and normal heptane or similar solvent is subjected to ball milling
Mixing, drying, compacting, de-waxing, vacuum or protective atmosphere sintering, processing and surface cleaning processing.
4. the synthetic method of composite polycrystal-diamond according to claim 3, which is characterized in that described WC, Ti, Zr, Co
WC powder granularity is 0.2-5 microns in powder；Ti powder granularity is 0.2-5 microns；Zr powder granularity is 0.2-5 microns；Co powder
Body granularity is 0.2-5 microns.
5. according to the synthetic method of composite polycrystal-diamond according to claim 2, which is characterized in that step D) height
Warm high pressure sintering process is 5 ~ 20GPa of sintering pressure, 1400 DEG C ~ 1700 DEG C of sintering temperature, 10 ~ 60min of soaking time.
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