CN107574346A - A kind of polycrystalline diamond wire drawing die blank with carbide ring and preparation method thereof - Google Patents
A kind of polycrystalline diamond wire drawing die blank with carbide ring and preparation method thereof Download PDFInfo
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- CN107574346A CN107574346A CN201710750540.5A CN201710750540A CN107574346A CN 107574346 A CN107574346 A CN 107574346A CN 201710750540 A CN201710750540 A CN 201710750540A CN 107574346 A CN107574346 A CN 107574346A
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Abstract
The invention discloses a kind of polycrystalline diamond wire drawing die blank with carbide ring, including polycrystalline diamond core and carbide ring, the raw material of polycrystalline diamond core to include by weight：100 parts of diadust, 10 20 parts of cubic boron nitride, 12 parts of binder；The component of carbide ring includes by weight percentage：Co：2.5 3.5%, Cr：0.6 1.2%, Mn：1 1.2%, Y：1 2%, Zr：1 2%, Mo：0.45 0.48%, Ti：0.3 0.4%, N：0.26 0.28%, C：4 8%, surplus W.The invention also discloses the preparation method of the above-mentioned polycrystalline diamond wire drawing die blank with carbide ring.The present invention not only has higher hardness, wear resistance ratio and toughness, and heat endurance is also further improved and improved.
Description
Technical field
The present invention relates to dimaond die technical field, more particularly to a kind of polycrystalline diamond with carbide ring to draw
Silk mold base material and preparation method thereof.
Background technology
Polycrystalline diamond wire drawing die blank with carbide ring is by diadust and the loading of nano metal bonding agent
In hard alloy support ring, sintering forms at high temperature under high pressure, the polycrystalline diamond production surrounded due to carbide ring to it
The internal pressure stress of banding has been given birth to, the outer tensile stress that polycrystalline diamond is subject to when can effectively offset drawing wires, therefore can hold
By higher-strength and high speed drawing, it is more suitable for for manufacturing the larger wire drawing die of dimensions, being widely used in drawing has coloured gold
Category（Copper, aluminium, nickel etc.）, stainless steel and various alloy wires.
At present, because domestic polycrystalline diamond wire drawing die blank technology of preparing and manufacturing process technology exist compared with external
Larger gap, particularly fine granularity polycrystalline diamond wire drawing die blank are in sintering, application aspect, the nothing compared with Foreign Advanced Lerel
By in quality, in specification or kind on have a certain distance, do not reach related wire rod, silk material low roughness will
Ask.
Application No. 201610683883.X patent discloses a kind of polycrystalline diamond wire drawing die with carbide ring
Blank and preparation method thereof, while high intensity and high speed drawing can be born, but applicant invents glomerocryst Buddha's warrior attendant obtained by the patent
The hardness of stone wire drawing die blank can not still meet the needs of in actual production process.
The content of the invention
Based on technical problem existing for background technology, the present invention proposes a kind of polycrystalline diamond with carbide ring and drawn
Silk mold base material and preparation method thereof, not only has higher hardness, wear resistance ratio and toughness, and heat endurance also obtains
Further improve.
A kind of polycrystalline diamond wire drawing die blank with carbide ring proposed by the present invention, including polycrystalline diamond core and
Carbide ring, the raw material of polycrystalline diamond core include by weight：100 parts of diadust, cubic boron nitride 10-20 parts,
Binder 1-2 parts；The component of carbide ring includes by weight percentage：Co：2.5-3.5%, Cr：0.6-1.2%, Mn：1-
1.2%, Y：1-2%, Zr：1-2%, Mo：0.45-0.48%, Ti：0.3-0.4%, N：0.26-0.28%, C：4-8%, surplus W.
Preferably, in the component of carbide ring, there is following relation in Cr elements, Y element, the content of Zr elements：nCr=
[0.2×(nY+nZr)]2+ 0.5, wherein nCrFor percentage by weight, n shared by Cr elements in the component of carbide ringYClosed for hard
Percentage by weight, n shared by Y element in Jin Huan componentZrFor percentage by weight shared by Zr elements in the component of carbide ring,
Preferably, the granularity of cubic boron nitride and diadust is 200-400nm.
Preferably, binder includes by weight：Ag powder 2-4 parts, Al powder 8-12 parts, Ni powder 10-18 parts, Co powder 12-20
Part, Zr powder 4-6 parts, potassium fluoroaluminate 20-30 parts, potassium fluoborate 15-20 parts, resinoid bond 55-65 parts.
Preferably, resinoid bond is phenolic resin and/or polyurethane resin.
The preparation method for the above-mentioned polycrystalline diamond wire drawing die blank with carbide ring that the present invention also proposes, including such as
Lower step：
S1, the raw material of carbide ring is heated to molten condition, vacuumizes maintenance negative pressure, heat-insulation pressure keeping obtains hard alloy
Liquid；
S2, hard alloy liquid poured into a mould into mould, cooled down, heated, insulation, oil cooling, then heat up, it is incubated, is then placed in
Burial pit, it is cooled to room temperature and obtains carbide ring；
S3, diadust, cubic boron nitride and binder be well mixed, ball milling obtains polycrystalline diamond core powder；
S4, polycrystalline diamond core powder is loaded in hard alloy annular distance and suppressed, heated up in pressing process, heat-insulation pressure keeping obtains
To mixed material；
S5, mixed material is subjected to heating in vacuum, is incubated, then boosts, heating is sintered, and cooling, vacuumizes heating, insulation
Pressurize, naturally cool to room temperature and obtain the polycrystalline diamond wire drawing die blank with carbide ring.
Preferably, in S1, the raw material of carbide ring is heated to molten condition, it is 2-8kPa to vacuumize and maintain negative pressure,
Heat-insulation pressure keeping 4-6h obtains hard alloy liquid.
Preferably, in S2, hard alloy liquid is poured into a mould into mould, is cooled to 500-600 DEG C, is heated to 1500-
1800 DEG C, 8-10h is incubated, oil cooling is to 300-350 DEG C, then is warming up to 1000-1200 DEG C, is incubated 3-4h, is then placed in burial pit,
Temperature retention time is 24-36h, is cooled to room temperature and obtains carbide ring.
Preferably, in S4, polycrystalline diamond core powder is loaded in hard alloy annular distance and suppressed, compacting pressure is
50-60Mpa, 150-180 DEG C is warming up in pressing process, heat-insulation pressure keeping 2-3h obtains mixed material.
Preferably, in S5, mixed material is subjected to heating in vacuum to 900-1000 DEG C, 3-4h is incubated, then boosts to
2000-3000Mpa, it is warming up to 1700-1800 DEG C and is sintered, be cooled to 250-320 DEG C, vacuumize and be warming up to 550-650 DEG C,
Heat-insulation pressure keeping 40-60min, naturally cool to room temperature and obtain the polycrystalline diamond wire drawing die blank with carbide ring.
Preferably, in S5, rate of pressure rise 10-20Mpa/min, heating rate is 2-4 DEG C/min.
The present invention is cooperated using diadust, cubic boron nitride and binder, uniform by ball milling mixing, is reduced
Raw material occurs to reunite or segregation phenomena, further improves compounding effect, cubic boron nitride is sufficiently mixed with diadust, makes
The uniformity consistency of wire drawing die product is further improved and improved；Binder is combined using metallic bond, salt simultaneously
Agent and resinoid bond collective effect, then by being heat-treated and sintering, salt bonding agent carries out fusing and mixed with metallic bond,
So as to be come in cubic boron nitride and diadust surface spreading, F- radiuses therein are minimum, can squeeze remaining anion
Impurity is caused to be dissociated, melted, as temperature further raises, metallic bond starts to melt, and by capillary motion,
To being infiltrated, being extended at gap, joint is formed, is tightly combined cubic boron nitride and diadust；From its microstructure
Upper observation, cubic boron nitride and diadust arrangement are close, and crystal grain intermeshes growth together each other, improves a cube nitrogen
Change the density of boron and diadust, so that the hardness of the polycrystalline diamond wire drawing die blank of effective elevator belt carbide ring,
And further improve its anti-wear performance, heat resistance and toughness energy.The present invention passes through Reasonable adjustment press temperature, compacting
Pass in pressure, press time, sintering temperature, sintering pressure, sintering time and sintering process between heating rate, rate of pressure rise
System, further enables hardness, anti-wear performance, heat resistance and the toughness of polycrystalline diamond wire drawing die blank be carried
Rise.
And the component of carbide ring is coordinated using aforementioned proportion, the density and hardness of carbide ring can be improved, simultaneously
Its toughness energy can be improved, effectively alleviates polycrystalline diamond in drawing process and is hit, and Cr elements, Y element, Zr
Element can cooperate, crystal grain thinning, when the content of Cr elements, Y element, Zr elements has following relation：nCr=[0.2×
(nY+nZr)]2When+0.5, the hardness and toughness energy of carbide ring can be further improved.The applicant closes according to hard
Jin Huan component uses suitable Technology for Heating Processing, strengthens matrix, purification activation crystal grain, optimizes lattice, improve the through hardening of matrix；
In heat treatment process, impact flexibility and hardness show to vie each other, the process of dynamic change, therefore, according to alloying component
The relation of adjustment heat treating regime, balance-impact toughness and hardness turns into the key for obtaining good combination property；The present invention passes through
Overall homogenization temperature, hardening heat, homogenization time and cool time, the relation between four technological parameters is disclosed, is passed through
Four technological parameters are considered, optimize system of heat treatment process so that carbide ring has good synthesis
Performance.
Embodiment
Below, technical scheme is described in detail by specific embodiment.
Embodiment 1
A kind of polycrystalline diamond wire drawing die blank with carbide ring proposed by the present invention, including polycrystalline diamond core and hard
Alloy hoop, the raw material of polycrystalline diamond core include by weight：100 parts of diadust, 10 parts of cubic boron nitride, binder 2
Part；The component of carbide ring includes by weight percentage：Co：2.5%, Cr：1.2%, Mn：1%, Y：2%, Zr：1%, Mo：
0.48%, Ti：0.3%, N：0.28%, C：4%, surplus W.
Binder includes by weight：4 parts of Ag powder, 8 parts of Al powder, 18 parts of Ni powder, 12 parts of Co powder, 6 parts of Zr powder, potassium fluoroaluminate
20 parts, 20 parts of potassium fluoborate, 55 parts of phenolic resin.
The preparation method for the above-mentioned polycrystalline diamond wire drawing die blank with carbide ring that the present invention also proposes, including such as
Lower step：
S1, the raw material of carbide ring is heated to molten condition, it is 8kPa to vacuumize and maintain negative pressure, and heat-insulation pressure keeping 4h is obtained firmly
Matter aluminium alloy；
S2, hard alloy liquid poured into a mould into mould, be cooled to 600 DEG C, be heated to 1500 DEG C, be incubated 10h, oil cooling is extremely
300 DEG C, then 1200 DEG C are warming up to, 3h is incubated, burial pit is then placed in, temperature retention time 36h, is cooled to room temperature and obtains hard conjunction
Jin Huan；
S3, diadust, cubic boron nitride and binder be well mixed, ball milling 12h obtains polycrystalline diamond core powder；
S4, polycrystalline diamond core powder is loaded in hard alloy annular distance and suppressed, compacting pressure is 60Mpa, pressing process
In be warming up to 150 DEG C, heat-insulation pressure keeping 3h obtains mixed material；
S5, by mixed material carry out heating in vacuum to 900 DEG C, be incubated 4h, then boost to 2000Mpa, be warming up to 1800 DEG C and enter
Row sintering, rate of pressure rise 10Mpa/min, heating rate is 4 DEG C/min, is cooled to 250 DEG C, vacuumizes and is warming up to 650 DEG C, is protected
Warm pressurize 40min, naturally cool to room temperature and obtain the polycrystalline diamond wire drawing die blank with carbide ring.
Embodiment 2
A kind of polycrystalline diamond wire drawing die blank with carbide ring proposed by the present invention, including polycrystalline diamond core and hard
Alloy hoop, the raw material of polycrystalline diamond core include by weight：100 parts of diadust, 20 parts of cubic boron nitride, binder 1
Part；The component of carbide ring includes by weight percentage：Co：3.5%, Cr：0.6%, Mn：1.2%, Y：1%, Zr：2%, Mo：
0.45%, Ti：0.4%, N：0.26%, C：8%, surplus W.
Binder includes by weight：2 parts of Ag powder, 12 parts of Al powder, 10 parts of Ni powder, 20 parts of Co powder, 4 parts of Zr powder, fluoaluminic acid
30 parts of potassium, 15 parts of potassium fluoborate, 65 parts of polyurethane resin.
The preparation method for the above-mentioned polycrystalline diamond wire drawing die blank with carbide ring that the present invention also proposes, including such as
Lower step：
S1, the raw material of carbide ring is heated to molten condition, it is 2kPa to vacuumize and maintain negative pressure, and heat-insulation pressure keeping 6h is obtained firmly
Matter aluminium alloy；
S2, hard alloy liquid poured into a mould into mould, be cooled to 500 DEG C, be heated to 1800 DEG C, be incubated 8h, oil cooling to 350
DEG C, then 1000 DEG C are warming up to, 4h is incubated, burial pit is then placed in, temperature retention time 24h, is cooled to room temperature and obtains hard alloy
Ring；
S3, diadust, cubic boron nitride and binder be well mixed, ball milling 24h obtains polycrystalline diamond core powder；
S4, polycrystalline diamond core powder is loaded in hard alloy annular distance and suppressed, compacting pressure is 50Mpa, pressing process
In be warming up to 180 DEG C, heat-insulation pressure keeping 2h obtains mixed material；
S5, by mixed material carry out heating in vacuum to 1000 DEG C, be incubated 3h, then boost to 3000Mpa, be warming up to 1700 DEG C and enter
Row sintering, rate of pressure rise 20Mpa/min, heating rate is 2 DEG C/min, is cooled to 320 DEG C, vacuumizes and is warming up to 550 DEG C, is protected
Warm pressurize 60min, naturally cool to room temperature and obtain the polycrystalline diamond wire drawing die blank with carbide ring.
Embodiment 3
A kind of polycrystalline diamond wire drawing die blank with carbide ring proposed by the present invention, including polycrystalline diamond core and hard
Alloy hoop, the raw material of polycrystalline diamond core include by weight：100 parts of diadust, 12 parts of cubic boron nitride, binder
1.8 part；The component of carbide ring includes by weight percentage：Co：2.8%, Cr：1.1%, Mn：1.05%, Y：1.8%, Zr：
1.4%, Mo：0.47%, Ti：0.33%, N：0.275%, C：5%, surplus W.
Binder includes by weight：3.5 parts of Ag powder, 9 parts of Al powder, 16 parts of Ni powder, 14 parts of Co powder, 5.5 parts of Zr powder, fluorine aluminium
Sour 22 parts of potassium, 18 parts of potassium fluoborate, 20 parts of phenolic resin, 38 parts of polyurethane resin.
The preparation method for the above-mentioned polycrystalline diamond wire drawing die blank with carbide ring that the present invention also proposes, including such as
Lower step：
S1, the raw material of carbide ring is heated to molten condition, it is 6kPa to vacuumize and maintain negative pressure, and heat-insulation pressure keeping 4.5h is obtained
Hard alloy liquid；
S2, hard alloy liquid poured into a mould into mould, be cooled to 580 DEG C, be heated to 1600 DEG C, be incubated 9.5h, oil cooling is extremely
320 DEG C, then 1150 DEG C are warming up to, 3.2h is incubated, burial pit is then placed in, temperature retention time 32h, is cooled to room temperature and obtains hard
Alloy hoop；
S3, diadust, cubic boron nitride and binder be well mixed, ball milling 16h obtains polycrystalline diamond core powder；
S4, polycrystalline diamond core powder is loaded in hard alloy annular distance and suppressed, compacting pressure is 58Mpa, pressing process
In be warming up to 160 DEG C, heat-insulation pressure keeping 2.8h obtains mixed material；
S5, by mixed material carry out heating in vacuum to 920 DEG C, be incubated 3.6h, then boost to 2200Mpa, be warming up to 1780 DEG C
It is sintered, rate of pressure rise 12Mpa/min, heating rate is 3.5 DEG C/min, is cooled to 260 DEG C, vacuumizes and be warming up to 620
DEG C, heat-insulation pressure keeping 45min, naturally cool to room temperature and obtain the polycrystalline diamond wire drawing die blank with carbide ring.
Embodiment 4
A kind of polycrystalline diamond wire drawing die blank with carbide ring proposed by the present invention, including polycrystalline diamond core and hard
Alloy hoop, the raw material of polycrystalline diamond core include by weight：100 parts of diadust, 18 parts of cubic boron nitride, binder
1.2 part；The component of carbide ring includes by weight percentage：Co：3.2%, Cr：0.7%, Mn：1.15%, Y：1.2%, Zr：
1.6%, Mo：0.46%, Ti：0.37%, N：0.265%, C：7%, surplus W.
Binder includes by weight：2.5 parts of Ag powder, 11 parts of Al powder, 12 parts of Ni powder, 18 parts of Co powder, 4.5 parts of Zr powder, fluorine
28 parts of potassium aluminate, 16 parts of potassium fluoborate, 40 parts of phenolic resin, 22 parts of polyurethane resin.
The preparation method for the above-mentioned polycrystalline diamond wire drawing die blank with carbide ring that the present invention also proposes, including such as
Lower step：
S1, the raw material of carbide ring is heated to molten condition, it is 4kPa to vacuumize and maintain negative pressure, and heat-insulation pressure keeping 5.5h is obtained
Hard alloy liquid；
S2, hard alloy liquid poured into a mould into mould, be cooled to 520 DEG C, be heated to 1700 DEG C, be incubated 8.5h, oil cooling is extremely
340 DEG C, then 1050 DEG C are warming up to, 3.8h is incubated, burial pit is then placed in, temperature retention time 28h, is cooled to room temperature and obtains hard
Alloy hoop；
S3, diadust, cubic boron nitride and binder be well mixed, ball milling 20h obtains polycrystalline diamond core powder；
S4, polycrystalline diamond core powder is loaded in hard alloy annular distance and suppressed, compacting pressure is 52Mpa, pressing process
In be warming up to 170 DEG C, heat-insulation pressure keeping 2.2h obtains mixed material；
S5, by mixed material carry out heating in vacuum to 980 DEG C, be incubated 3.2h, then boost to 2800Mpa, be warming up to 1720 DEG C
It is sintered, rate of pressure rise 18Mpa/min, heating rate is 2.5 DEG C/min, is cooled to 300 DEG C, vacuumizes and be warming up to 580
DEG C, heat-insulation pressure keeping 55min, naturally cool to room temperature and obtain the polycrystalline diamond wire drawing die blank with carbide ring.
Embodiment 5
A kind of polycrystalline diamond wire drawing die blank with carbide ring proposed by the present invention, including polycrystalline diamond core and hard
Alloy hoop, the raw material of polycrystalline diamond core include by weight：100 parts of diadust, 15 parts of cubic boron nitride, binder
1.5 part；The component of carbide ring includes by weight percentage：Co：3%, Cr：0.86%, Mn：1.1%, Y：1.5%, Zr：1.5%,
Mo：0.465%, Ti：0.35%, N：0.27%, C：6%, surplus W.
Binder includes by weight：3 parts of Ag powder, 10 parts of Al powder, 14 parts of Ni powder, 16 parts of Co powder, 5 parts of Zr powder, fluoaluminic acid
25 parts of potassium, 17 parts of potassium fluoborate, 30 parts of phenolic resin, 60 parts of polyurethane resin.
The preparation method for the above-mentioned polycrystalline diamond wire drawing die blank with carbide ring that the present invention also proposes, including such as
Lower step：
S1, the raw material of carbide ring is heated to molten condition, it is 5kPa to vacuumize and maintain negative pressure, and heat-insulation pressure keeping 5h is obtained firmly
Matter aluminium alloy；
S2, hard alloy liquid poured into a mould into mould, be cooled to 550 DEG C, be heated to 1650 DEG C, be incubated 9h, oil cooling to 330
DEG C, then 1100 DEG C are warming up to, 3.5h is incubated, burial pit is then placed in, temperature retention time 30h, is cooled to room temperature and obtains hard conjunction
Jin Huan；
S3, diadust, cubic boron nitride and binder be well mixed, ball milling 18h obtains polycrystalline diamond core powder；
S4, polycrystalline diamond core powder is loaded in hard alloy annular distance and suppressed, compacting pressure is 55Mpa, pressing process
In be warming up to 165 DEG C, heat-insulation pressure keeping 2.5h obtains mixed material；
S5, by mixed material carry out heating in vacuum to 950 DEG C, be incubated 3.4h, then boost to 2500Mpa, be warming up to 1750 DEG C
It is sintered, rate of pressure rise 15Mpa/min, heating rate is 3 DEG C/min, is cooled to 280 DEG C, vacuumizes and be warming up to 600 DEG C,
Heat-insulation pressure keeping 50min, naturally cool to room temperature and obtain the polycrystalline diamond wire drawing die blank with carbide ring.
Comparative example 1
Compared with Example 5, its difference is：The raw material of polycrystalline diamond core includes by weight：80 parts of diadust, stand
Square 25 parts of boron nitride, 2.5 parts of binder, remaining is same as Example 5.
Comparative example 2
Compared with Example 5, its difference is：The raw material of polycrystalline diamond core includes by weight：120 parts of diadust,
0.5 part of binder, remaining is same as Example 5.
Comparative example 3
Compared with Example 5, its difference is：In the component of carbide ring, Cr：1.5%, Y：0.5%, Zr：2.5%, remaining with
Embodiment 5 is identical.
Comparative example 4
Compared with Example 5, its difference is：In the component of carbide ring, Cr：0.4%, Y：2.2%, Zr：0.8%, remaining with
Embodiment 5 is identical.
Comparative example 5
Compared with Example 5, its difference is：In binder raw material, the parts by weight of Ag powder are 6 parts, and the parts by weight of Al powder are 6
Part, the parts by weight of Ni powder are 20 parts, and the parts by weight of Co powder are 10 parts, and the parts by weight of Zr powder are 8 parts, and remaining is same as Example 5.
Comparative example 6
Compared with Example 5, its difference is：In binder raw material, the parts by weight of Ag powder are 1 part, and the parts by weight of Al powder are 15
Part, the parts by weight of Ni powder are 8 parts, and the parts by weight of Co powder are 22 parts, and the parts by weight of Zr powder are 2 parts, and remaining is same as Example 5.
Comparative example 7
Compared with Example 5, its difference is：In binder raw material, the parts by weight of potassium fluoroaluminate are 35 parts, the weight of potassium fluoborate
It is 10 parts to measure part, and remaining is same as Example 5.
Comparative example 8
Compared with Example 5, its difference is：In binder raw material, the parts by weight of potassium fluoroaluminate are 15 parts, the weight of potassium fluoborate
It is 25 parts to measure part, and remaining is same as Example 5.
Comparative example 9
Compared with Example 5, its difference is：In S2, hard alloy liquid is poured into a mould into mould, 650 DEG C is cooled to, adds
Heat is incubated 12h to 1900 DEG C, and oil cooling is to 400 DEG C, then is warming up to 1400 DEG C, is incubated 6h, is then placed in burial pit, temperature retention time
For 40h, it is cooled to room temperature and obtains carbide ring；Remaining is same as Example 5.
Comparative example 10
Compared with Example 5, its difference is：In S2, hard alloy liquid is poured into a mould into mould, 450 DEG C is cooled to, adds
Heat is incubated 6h to 1400 DEG C, and oil cooling is to 280 DEG C, then is warming up to 800 DEG C, is incubated 2h, is then placed in burial pit, temperature retention time is
20h, it is cooled to room temperature and obtains carbide ring；Remaining is same as Example 5.
Comparative example 11
Compared with Example 5, its difference is：In S4, polycrystalline diamond core powder is loaded in hard alloy annular distance and pressed
System, compacting pressure is 65Mpa, 200 DEG C is warming up in pressing process, heat-insulation pressure keeping 4h obtains mixed material；Remaining and embodiment 5
It is identical.
Comparative example 12
Compared with Example 5, its difference is：In S4, polycrystalline diamond core powder is loaded in hard alloy annular distance and pressed
System, compacting pressure is 45Mpa, 120 DEG C is warming up in pressing process, heat-insulation pressure keeping 1h obtains mixed material；Remaining and embodiment 5
It is identical.
Comparative example 13
Compared with Example 5, its difference is：In S5, mixed material is subjected to heating in vacuum to 1200 DEG C, is incubated 5h, then
3200Mpa is boosted to, 2000 DEG C is warming up to and is sintered, be cooled to 360 DEG C, vacuumize and be warming up to 700 DEG C, heat-insulation pressure keeping
80min, naturally cool to room temperature and obtain the polycrystalline diamond wire drawing die blank with carbide ring；Remaining is same as Example 5.
Comparative example 14
Compared with Example 5, its difference is：In S5, mixed material is subjected to heating in vacuum to 800 DEG C, 2h is incubated, then rises
1800Mpa is depressed into, 1600 DEG C is warming up to and is sintered, be cooled to 220 DEG C, vacuumizes and is warming up to 520 DEG C, heat-insulation pressure keeping 30min,
Naturally cool to room temperature and obtain the polycrystalline diamond wire drawing die blank with carbide ring；Remaining is same as Example 5.
Comparative example 15
Compared with Example 5, its difference is：Rate of pressure rise is 22Mpa/min, and heating rate is 5 DEG C/min；Remaining and implementation
Example 5 is identical.
Comparative example 16
Compared with Example 5, its difference is：Rate of pressure rise is 8Mpa/min, and heating rate is 1.5 DEG C/min；Remaining and reality
It is identical to apply example 5.
Comparative example 17
Compared with Example 5, its difference is：Carbide ring is prepared using common process and material, remaining and implementation
Example 5 is identical.
Comparative example 18
Polycrystalline diamond wire drawing of the gained of embodiment 2 with carbide ring in Application No. 201610683883.X Chinese patent
Mold base material.
Polycrystalline diamond wire drawing die blank with carbide ring obtained by embodiment 3-5 and band obtained by comparative example 1-18 is hard
The polycrystalline diamond wire drawing die blank of matter alloy hoop carries out performance test, and its result is as follows：
Analyzed, can be apparent from by above-described embodiment and comparative example products obtained therefrom performance comparison, present invention institute gained band hard
The polycrystalline diamond wire drawing die blank of alloy hoop, not only there is higher hardness, wear resistance ratio and toughness, and thermostabilization
Property is also further improved and improved.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (10)
1. a kind of polycrystalline diamond wire drawing die blank with carbide ring, including polycrystalline diamond core and carbide ring, its
It is characterised by, the raw material of polycrystalline diamond core includes by weight：100 parts of diadust, cubic boron nitride 10-20 parts, stick
Mixture 1-2 parts；The component of carbide ring includes by weight percentage：Co：2.5-3.5%, Cr：0.6-1.2%, Mn：1-1.2%,
Y：1-2%, Zr：1-2%, Mo：0.45-0.48%, Ti：0.3-0.4%, N：0.26-0.28%, C：4-8%, surplus W.
2. the polycrystalline diamond wire drawing die blank with carbide ring according to claim 1, it is characterised in that cube nitridation
The granularity of boron and diadust is 200-400nm.
3. the polycrystalline diamond wire drawing die blank with carbide ring according to claim 1, it is characterised in that binder is pressed
Parts by weight include：Ag powder 2-4 parts, Al powder 8-12 parts, Ni powder 10-18 parts, Co powder 12-20 parts, Zr powder 4-6 parts, potassium fluoroaluminate 20-
30 parts, potassium fluoborate 15-20 parts, resinoid bond 55-65 parts.
4. according to any one of the claim 1-3 polycrystalline diamond wire drawing die blanks with carbide ring, it is characterised in that
Resinoid bond is phenolic resin and/or polyurethane resin.
A kind of 5. preparation side of the polycrystalline diamond wire drawing die blank with carbide ring as described in claim any one of 1-4
Method, it is characterised in that comprise the following steps：
S1, the raw material of carbide ring is heated to molten condition, vacuumizes maintenance negative pressure, heat-insulation pressure keeping obtains hard alloy
Liquid；
S2, hard alloy liquid poured into a mould into mould, cooled down, heated, insulation, oil cooling, then heat up, it is incubated, is then placed in
Burial pit, it is cooled to room temperature and obtains carbide ring；
S3, diadust, cubic boron nitride and binder be well mixed, ball milling obtains polycrystalline diamond core powder；
S4, polycrystalline diamond core powder is loaded in hard alloy annular distance and suppressed, heated up in pressing process, heat-insulation pressure keeping obtains
To mixed material.
6.S5, mixed material is subjected to heating in vacuum, is incubated, then boosts, heating is sintered, and cooling, vacuumizes heating, guarantor
Warm pressurize, naturally cool to room temperature and obtain the polycrystalline diamond wire drawing die blank with carbide ring.
7. the preparation method of the polycrystalline diamond wire drawing die blank with carbide ring, its feature exist according to claim 5
In, in S1, the raw material of carbide ring is heated to molten condition, vacuumize maintain negative pressure be 2-8kPa, heat-insulation pressure keeping 4-6h
Obtain hard alloy liquid.
8. the preparation method of the polycrystalline diamond wire drawing die blank with carbide ring, its feature exist according to claim 5
In in S2, hard alloy liquid being poured into a mould into mould, is cooled to 500-600 DEG C, be heated to 1500-1800 DEG C, be incubated 8-
10h, oil cooling is to 300-350 DEG C, then is warming up to 1000-1200 DEG C, is incubated 3-4h, is then placed in burial pit, temperature retention time 24-
36h, it is cooled to room temperature and obtains carbide ring；
According to the preparation method of any one of the claim 5-7 polycrystalline diamond wire drawing die blanks with carbide ring, its
It is characterised by, in S4, polycrystalline diamond core powder is loaded in hard alloy annular distance and suppressed, compacting pressure is 50-
60Mpa, 150-180 DEG C is warming up in pressing process, heat-insulation pressure keeping 2-3h obtains mixed material.
9. according to the preparation method of any one of the claim 5-7 polycrystalline diamond wire drawing die blanks with carbide ring,
Characterized in that, in S5, mixed material is subjected to heating in vacuum to 900-1000 DEG C, 3-4h is incubated, then boosts to 2000-
3000Mpa, it is warming up to 1700-1800 DEG C and is sintered, be cooled to 250-320 DEG C, vacuumizes and be warming up to 550-650 DEG C, insulation
Pressurize 40-60min, naturally cool to room temperature and obtain the polycrystalline diamond wire drawing die blank with carbide ring.
10. according to the preparation method of any one of the claim 5-7 polycrystalline diamond wire drawing die blanks with carbide ring,
Characterized in that, in S5, rate of pressure rise 10-20Mpa/min, heating rate is 2-4 DEG C/min.
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Cited By (1)
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| CN110142305A (en) * | 2019-05-28 | 2019-08-20 | 河南四方达超硬材料股份有限公司 | A kind of polycrystalline diamond wire drawing die base of highly resistance decylization and preparation method thereof |
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