CN107761025A - A kind of sheet material of high intensity and preparation method thereof - Google Patents
A kind of sheet material of high intensity and preparation method thereof Download PDFInfo
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Abstract
The present invention discloses a kind of sheet material of high intensity, includes the raw material of following parts by weight proportioning：25 parts of 68 77 parts of cubic boron nitride micro mist, 40 78 parts of tungsten powder, 19 22 parts of silicon carbide whisker, 16 20 parts of cobalt powder, 8 10 parts of hafnium powder, 60 79 parts of aluminium powder, 48 parts of palladium powder, 26 parts of ruthenium powder, 7 10 parts of rhenium powder, 14 18 parts of rhodium powder, 24 30 parts of diadust, 10 12 parts of zirconium powder, 47 parts of yittrium oxide and ramet, the sheet material of the high intensity have higher intensity.
Description
Technical field
The present invention relates to building field, and in particular to a kind of sheet material of high intensity and preparation method thereof.
Background technology
Template is commonly made to the flattened rectangular constructional material plate of normal size, makees wall, ceiling or the component on floor.
Refer to the metallic plate that forging, rolling or casting form more.It is divided into thin plate, middle plate, slab, special heavy plate, is commonly made to normal size
Flattened rectangular constructional material plate.
The intensity of sheet material is one of important performance indications and research direction, and those skilled in the art wishes the strong of sheet material
Degree can be improved further, to meet various use demands.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of sheet material of high intensity and preparation method thereof.
To solve the above problems, the present invention adopts the following technical scheme that：
A kind of sheet material of high intensity and preparation method thereof, include the raw material of following parts by weight proportioning：Cubic boron nitride micro mist 68-
77 parts, tungsten powder 40-78 parts, silicon carbide whisker 19-22 parts, cobalt powder 16-20 parts, hafnium powder 8-10 parts, aluminium powder 60-79 parts, palladium powder 4-8
Part, ruthenium powder 2-6 parts, rhenium powder 7-10 parts, rhodium powder 14-18 parts, diadust 24-30 parts, zirconium powder 10-12 parts, yittrium oxide 4-7 parts
With ramet 2-5 parts.
Further, the raw material of following parts by weight proportioning is included：68 parts of cubic boron nitride micro mist, 40 parts of tungsten powder, carbonization
19 parts of silicon wafer palpus, 16 parts of cobalt powder, 8 parts of hafnium powder, 60 parts of aluminium powder, 4 parts of palladium powder, 2 parts of ruthenium powder, 7 parts of rhenium powder, 14 parts of rhodium powder, diamond
2 parts of 24 parts of micro mist, 10 parts of zirconium powder, 4 parts of yittrium oxide and ramet.
Further, the raw material of following parts by weight proportioning is included：77 parts of cubic boron nitride micro mist, 78 parts of tungsten powder, carbonization
22 parts of silicon wafer palpus, 20 parts of cobalt powder, 10 parts of hafnium powder, 79 parts of aluminium powder, 8 parts of palladium powder, 6 parts of ruthenium powder, 10 parts of rhenium powder, 18 parts of rhodium powder, Buddha's warrior attendant
5 parts of 30 parts of stone micro mist, 12 parts of zirconium powder, 7 parts of yittrium oxide and ramet.
Further, the raw material of following parts by weight proportioning is included：73 parts of cubic boron nitride micro mist, 54 parts of tungsten powder, carbonization
21 parts of silicon wafer palpus, 18 parts of cobalt powder, 9 parts of hafnium powder, 68 parts of aluminium powder, 6 parts of palladium powder, 4 parts of ruthenium powder, 9 parts of rhenium powder, 17 parts of rhodium powder, diamond
4 parts of 28 parts of micro mist, 11 parts of zirconium powder, 6 parts of yittrium oxide and ramet.
Another technical problem to be solved by the present invention is that a kind of preparation method of the sheet material of high intensity is provided, including following step
Suddenly：
1）By boron nitride micro mist 68-77 parts, tungsten powder 40-78 parts, aluminium powder 60-79 parts, hafnium powder 8-10 parts, palladium powder 4-8 parts, ruthenium powder 2-
6 parts, rhenium powder 7-10 parts, rhodium powder 14-18 parts, zirconium powder 10-12 parts, yittrium oxide 4-7 parts and ramet 2-5 parts carry out vacuum and done together
Dry processing, drying temperature are 90-110 DEG C, vacuum 5-9Pa, drying time 10-15min, and dried powder is made, standby；
2）By step 1）Obtained dried powder and silicon carbide whisker 19-22 parts are poured into three-dimensional mixer together to be mixed
Processing, incorporation time 3-5h, mixing material is made；
3）By step 2）In mixing material be divided into A, B and C part；
4）Cobalt powder 16-20 parts and diadust 24-30 parts are poured into three-dimensional mixer and carry out mixed processing together, is mixed
Time is 1-3h, and mixed-powder is made；
5）By step 4）Obtained mixed-powder is divided into 18 parts, is then sintered using high temperature insostatic pressing (HIP) method, sintering temperature
Spend for 1495-1600 DEG C, sintering time is 4-8 hours, makees pressure medium using nitrogen, pressure 180-210Mpa, is made 18
Individual reinforcement scale, it is standby；
6）By step 3）In A part mixing materials be poured into pressing mold, flattening-out, be then covered with step 5）Obtained wherein 9 reinforcements
Scale, then by step 3）In B part mixing materials be poured into pressing mold, step 5 is spread after flattening-out）Obtained other 9 add
Strong scale, finally pours into step 3）In C part mixed-powders, flattening-out, then carry out compressing processing, be stripped, green compact be made, it is standby
With；
7）By step 6）Obtained green compact, which are placed in sintering furnace, carries out pressure sintering processing, cooling, sintered body is made, standby；
8）By step 7）Obtained sintered body, which is placed in 10-30Pa vacuum drying oven, carries out vacuum heat；Then will be through Vacuum Heat
The sintered body of processing is incubated in the heating furnace that argon gas is protected, and carries out water quenching immediately, this vacuum heat-insulation-water
The process quenched is one cycle heat treatment, carries out four cycle heat treatments altogether, produces sheet material.
Further, the step 7）In pressure sintering processing pressure pressure be 4000-8000MPa, pressure the time
For 40-60 minutes, the heating-up temperature of the pressure sintering processing is 900-1600 DEG C, heat time 40-60min.
Further, the step 8）In vacuum heat heating-up temperature be 500-600 DEG C, heat time 40-
60min, the step 8）In holding temperature be 450-500 DEG C, soaking time 15-30min.
Further, the step 6）The reinforcement scale rectangular array distribution of middle first time tiling.
Further, the step 6）In second tiling the distribution of reinforcement scale circular array.
The characteristics of being the raw material of the sheet material of high intensity of the present invention below：
Cubic boron nitride micro mist：With very high hardness, heat endurance and chemical inertness
Tungsten powder：Hardness is high, and fusing point is high；Main application is manufacture filament and high-speed cutting steel alloy, superhard mould, is also used for optics
Instrument, chemical apparatuses；
Silicon carbide whisker：With fairly good high temperature resistant property and very high intensity.It is mainly used in needing high strength at high temperature application material
Toughness reinforcing occasion；
Cobalt powder：Cobalt can guarantee that hard alloy has certain toughness as the binding agent in powder metallurgy；
Hafnium powder：The chemical property of hafnium and zirconium are quite similar, have good corrosion resistance,
Aluminium powder：For silvery white light metal, there are ductility, density very little；
Palladium powder：It is high temperature resistant, corrosion-resistant, wear-resistant and there is extremely strong extensibility with splendid physics and chemical property；
Ruthenium powder：The white metal of hard, property is very stable, and corrosion resistance is very strong, can effectively harden palladium；
Rhenium powder：It is stone, wear-resisting, corrosion-resistant, the enough intensity and plasticity for improving tungsten simultaneously；
Rhodium powder：Silvery white, hard metal, there is high reflectance, rhodium can form solid solution with palladium, play solution strengthening to matrix and make
With improving fusing point, recrystallization temperature and the corrosion resistance of matrix, reduce voloxidation loss；
Diadust：Hardness is high, wearability is good；
Zirconium powder：, can crystal grain thinning, drop with characteristics such as surprising corrosion resistance, high fusing point, the hardness of superelevation and intensity
The brittle transition temperature of inductile one；
Yittrium oxide：Yittrium oxide is added during sintering can effectively reduce the grain size of tungsten alloy；
Ramet：For powder metallurgy, cutting element, fine ceramics, chemical vapor deposition, hard, wear-resistant alloy cutter, instrument,
Mould and wear-and corrosion-resistant structure member additive, improve the toughness of alloy, also do sintering cemented carbide crystal grain with ramet at present
Inhibitor of growing up is used；
The beneficial effects of the invention are as follows：By coordinating zirconium powder added with yittrium oxide and ramet, can effective crystal grain thinning degree,
Densification degree is improved, can effectively increase hardness, and adds intensity and plasticity that rhenium powder improves tungsten, it is overall with higher
Intensity, add, inside has cobalt powder and the reinforcement scale that forms of diadust sintering, whole so as to greatly improve
The intensity and anti-puncture ability of body.
Embodiment
Embodiment 1：
A kind of sheet material of high intensity, include the raw material of following parts by weight proportioning：68 parts of cubic boron nitride micro mist, 40 parts of tungsten powder,
19 parts of silicon carbide whisker, 16 parts of cobalt powder, 8 parts of hafnium powder, 60 parts of aluminium powder, 4 parts of palladium powder, 2 parts of ruthenium powder, 7 parts of rhenium powder, 14 parts of rhodium powder, gold
2 parts of 24 parts of hard rock micro mist, 10 parts of zirconium powder, 4 parts of yittrium oxide and ramet.
A kind of preparation method of the sheet material of high intensity comprises the following steps：
1）By 68 parts of boron nitride micro mist, 40 parts of tungsten powder, 60 parts of aluminium powder, 8 parts of hafnium powder, 4 parts of palladium powder, 2 parts of ruthenium powder, 7 parts of rhenium powder, rhodium powder
2 parts of 14 parts, 10 parts of zirconium powder, 4 parts of yittrium oxide and ramet carry out vacuum drying treatment together, and drying temperature is 90 DEG C, vacuum
For 5Pa, drying time 10min, dried powder is made, it is standby；
2）By step 1）Obtained 19 parts of dried powder and silicon carbide whisker is poured into three-dimensional mixer together to be carried out at mixing
Reason, incorporation time 3h, mixing material is made；
3）By step 2）In mixing material be divided into A, B and C part；
4）24 parts of 16 parts of cobalt powder and diadust are poured into three-dimensional mixer together and carry out mixed processing, incorporation time is
1h, mixed-powder is made；
5）By step 4）Obtained mixed-powder is divided into 18 parts, is then sintered using high temperature insostatic pressing (HIP) method, sintering temperature
To spend for 1600 DEG C, sintering time is 4 hours, makees pressure medium using nitrogen, pressure 180Mpa, 18 reinforcement scales is made,
It is standby；
6）By step 3）In A part mixing materials be poured into pressing mold, flattening-out, be then covered with step 5）Obtained wherein 9 reinforcements
Scale, then by step 3）In B part mixing materials be poured into pressing mold, step 5 is spread after flattening-out）Obtained other 9 add
Strong scale, finally pours into step 3）In C part mixed-powders, flattening-out, then carry out compressing processing, be stripped, green compact be made, it is standby
With；
7）By step 6）Obtained green compact, which are placed in sintering furnace, carries out pressure sintering processing, cooling, sintered body is made, standby；
8）By step 7）Obtained sintered body, which is placed in 10Pa vacuum drying oven, carries out vacuum heat；Then at will be through Vacuum Heat
The sintered body of reason is incubated in the heating furnace that argon gas is protected, and carries out water quenching immediately, this vacuum heat-insulation-water quenching
Process be one cycle heat treatment, altogether carry out four cycle heat treatments, produce sheet material.
Embodiment 2：
A kind of sheet material of high intensity, include the raw material of following parts by weight proportioning：77 parts of cubic boron nitride micro mist, 78 parts of tungsten powder,
22 parts of silicon carbide whisker, 20 parts of cobalt powder, 10 parts of hafnium powder, 79 parts of aluminium powder, 8 parts of palladium powder, 6 parts of ruthenium powder, 10 parts of rhenium powder, 18 parts of rhodium powder,
5 parts of 30 parts of diadust, 12 parts of zirconium powder, 7 parts of yittrium oxide and ramet.
A kind of preparation method of the sheet material of high intensity, comprises the following steps：
1）By 77 parts of boron nitride micro mist, 78 parts of tungsten powder, 79 parts of aluminium powder, 10 parts of hafnium powder, 8 parts of palladium powder, 6 parts of ruthenium powder, 10 parts of rhenium powder, rhodium
5 parts of 18 parts of powder, 12 parts of zirconium powder, 7 parts of yittrium oxide and ramet carry out vacuum drying treatment together, and drying temperature is 110 DEG C, vacuum
Spend for 9Pa, drying time 15min, dried powder is made, it is standby；
2）By step 1）Obtained 22 parts of dried powder and silicon carbide whisker is poured into three-dimensional mixer together to be carried out at mixing
Reason, incorporation time 5h, mixing material is made；
3）By step 2）In mixing material be divided into A, B and C part；
4）30 parts of 20 parts of cobalt powder and diadust are poured into three-dimensional mixer together and carry out mixed processing, incorporation time is
3h, mixed-powder is made；
5）By step 4）Obtained mixed-powder is divided into 18 parts, is then sintered using high temperature insostatic pressing (HIP) method, sintering temperature
To spend for 1600 DEG C, sintering time is 8 hours, makees pressure medium using nitrogen, pressure 210Mpa, 18 reinforcement scales is made,
It is standby；
6）By step 3）In A part mixing materials be poured into pressing mold, flattening-out, be then covered with step 5）Obtained wherein 9 reinforcements
Scale, then by step 3）In B part mixing materials be poured into pressing mold, step 5 is spread after flattening-out）Obtained other 9 add
Strong scale, finally pours into step 3）In C part mixed-powders, flattening-out, then carry out compressing processing, be stripped, green compact be made, it is standby
With；
7）By step 6）Obtained green compact, which are placed in sintering furnace, carries out pressure sintering processing, cooling, sintered body is made, standby；
8）By step 7）Obtained sintered body, which is placed in 30Pa vacuum drying oven, carries out vacuum heat；Then at will be through Vacuum Heat
The sintered body of reason is incubated in the heating furnace that argon gas is protected, and carries out water quenching immediately, this vacuum heat-insulation-water quenching
Process be one cycle heat treatment, altogether carry out four cycle heat treatments, produce sheet material.
Embodiment 3：
A kind of sheet material of high intensity, include the raw material of following parts by weight proportioning：73 parts of cubic boron nitride micro mist, 54 parts of tungsten powder,
21 parts of silicon carbide whisker, 18 parts of cobalt powder, 9 parts of hafnium powder, 68 parts of aluminium powder, 6 parts of palladium powder, 4 parts of ruthenium powder, 9 parts of rhenium powder, 17 parts of rhodium powder, gold
4 parts of 28 parts of hard rock micro mist, 11 parts of zirconium powder, 6 parts of yittrium oxide and ramet.
A kind of preparation method of the sheet material of high intensity, comprises the following steps：
1）By 73 parts of boron nitride micro mist, 54 parts of tungsten powder, 68 parts of aluminium powder, 9 parts of hafnium powder, 6 parts of palladium powder, 4 parts of ruthenium powder, 9 parts of rhenium powder, rhodium powder
4 parts of 17 parts, 18 parts of zirconium powder, 6 parts of yittrium oxide and ramet carry out vacuum drying treatment together, and drying temperature is 100 DEG C, vacuum
For 8Pa, drying time 13min, dried powder is made, it is standby；
2）By step 1）Obtained 21 parts of dried powder and silicon carbide whisker is poured into three-dimensional mixer together to be carried out at mixing
Reason, incorporation time 4h, mixing material is made；
3）By step 2）In mixing material be divided into A, B and C part；
4）28 parts of 18 parts of cobalt powder and diadust are poured into three-dimensional mixer together and carry out mixed processing, incorporation time is
2h, mixed-powder is made；
5）By step 4）Obtained mixed-powder is divided into 18 parts, is then sintered using high temperature insostatic pressing (HIP) method, sintering temperature
To spend for 1600 DEG C, sintering time is 6 hours, makees pressure medium using nitrogen, pressure 200Mpa, 18 reinforcement scales is made,
It is standby；
6）By step 3）In A part mixing materials be poured into pressing mold, flattening-out, be then covered with step 5）Obtained wherein 9 reinforcements
Scale, then by step 3）In B part mixing materials be poured into pressing mold, step 5 is spread after flattening-out）Obtained other 9 add
Strong scale, finally pours into step 3）In C part mixed-powders, flattening-out, then carry out compressing processing, be stripped, green compact be made, it is standby
With；
7）By step 6）Obtained green compact, which are placed in sintering furnace, carries out pressure sintering processing, cooling, sintered body is made, standby；
8）By step 7）Obtained sintered body, which is placed in 20Pa vacuum drying oven, carries out vacuum heat；Then will be through vacuum heat
Sintered body be incubated in the heating furnace that argon gas is protected, carry out water quenching immediately, this vacuum heat-insulation-water quenching
Process is one cycle heat treatment, carries out four cycle heat treatments altogether, produces sheet material.
In the present embodiment, the step 7）In pressure sintering processing pressure pressure be 6000MPa, press the time be
50 minutes, the heating-up temperature of the pressure sintering processing was 900 DEG C, heat time 50min.
In the present embodiment, the step 8）In the heating-up temperature of vacuum heat be 550 DEG C, the heat time is
50min, the step 8）In holding temperature be 450 DEG C, soaking time 15min.
Experimental example：
Experimental subjects：The equal sheet metal of 120 pieces of length, width and height, randomized are divided into 3 groups：Control group one, control group two and experiment
Group, every group 40 pieces.
Test method：Control group one is using tungsten alloy on the market, and control group two is using aluminium alloy, experimental group make on the market
With the sheet material of the high intensity of the present invention, tested using tensile-strength tester, yield strength testing machine and shear testing maschine.
Experimental result is as follows：
| Group | Ultimate tensile strength (Mpa) | Yield strength (Mpa) | Shear strength（MPa） |
| Control group one | 758 | 517 | 690 |
| Control group two | 447 | 325 | 266 |
| Experimental group | 1205 | 975 | 2678 |
By being contrasted to 3 groups of experiments, the ultimate tensile strength of experimental group is about 1.5 times of control group one, ultimate tensible strength
Degree is about 2.7 times of control group two；The yield strength of experimental group is about 1.9 times of control group one, and yield strength is control group two
3 times；The shear strength of experimental group is about 3.9 times of control group one, and shear strength is about 11.8 times of control group two.It can be seen that reality
The mechanical property for testing group is quite outstanding.
The beneficial effects of the invention are as follows：By coordinating zirconium powder added with yittrium oxide and ramet, crystalline substance can be effectively refined
Granularity, densification degree is improved, can effectively increase hardness, and add intensity and plasticity that rhenium powder improves tungsten, overall tool
There is higher intensity, add, inside has the reinforcement scale that cobalt powder and diadust sintering form, so as to great
Improve overall intensity and anti-puncture ability.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
The change or replacement expected without creative work, it should all cover within the scope of the present invention.
Claims (9)
1. a kind of sheet material of high intensity, it is characterised in that include the raw material of following parts by weight proportioning：Cubic boron nitride micro mist
68-77 parts, tungsten powder 40-78 parts, silicon carbide whisker 19-22 parts, cobalt powder 16-20 parts, hafnium powder 8-10 parts, aluminium powder 60-79 parts, palladium powder
4-8 parts, ruthenium powder 2-6 parts, rhenium powder 7-10 parts, rhodium powder 14-18 parts, diadust 24-30 parts, zirconium powder 10-12 parts, yittrium oxide 4-
7 parts and ramet 2-5 parts.
2. a kind of sheet material of high intensity as claimed in claim 1, it is characterised in that include the original of following parts by weight proportioning
Material：68 parts of cubic boron nitride micro mist, 40 parts of tungsten powder, 19 parts of silicon carbide whisker, 16 parts of cobalt powder, 8 parts of hafnium powder, 60 parts of aluminium powder, palladium powder 4
Part, 2 parts of ruthenium powder, 7 parts of rhenium powder, 14 parts of rhodium powder, 24 parts of diadust, 10 parts of zirconium powder, 4 parts of yittrium oxide and 2 parts of ramet.
3. a kind of sheet material of high intensity as claimed in claim 1, it is characterised in that include the original of following parts by weight proportioning
Material：77 parts of cubic boron nitride micro mist, 78 parts of tungsten powder, 22 parts of silicon carbide whisker, 20 parts of cobalt powder, 10 parts of hafnium powder, 79 parts of aluminium powder, palladium powder
5 parts of 8 parts, 6 parts of ruthenium powder, 10 parts of rhenium powder, 18 parts of rhodium powder, 30 parts of diadust, 12 parts of zirconium powder, 7 parts of yittrium oxide and ramet.
4. a kind of sheet material of high intensity as claimed in claim 1, it is characterised in that include the original of following parts by weight proportioning
Material：73 parts of cubic boron nitride micro mist, 54 parts of tungsten powder, 21 parts of silicon carbide whisker, 18 parts of cobalt powder, 9 parts of hafnium powder, 68 parts of aluminium powder, palladium powder 6
Part, 4 parts of ruthenium powder, 9 parts of rhenium powder, 17 parts of rhodium powder, 28 parts of diadust, 11 parts of zirconium powder, 6 parts of yittrium oxide and 4 parts of ramet.
5. a kind of preparation method of the sheet material of high intensity, it is characterised in that comprise the following steps：
1）By boron nitride micro mist 68-77 parts, tungsten powder 40-78 parts, aluminium powder 60-79 parts, hafnium powder 8-10 parts, palladium powder 4-8 parts, ruthenium powder 2-
6 parts, rhenium powder 7-10 parts, rhodium powder 14-18 parts, zirconium powder 10-12 parts, yittrium oxide 4-7 parts and ramet 2-5 parts carry out vacuum and done together
Dry processing, drying temperature are 90-110 DEG C, vacuum 5-9Pa, drying time 10-15min, and dried powder is made, standby；
2）By step 1）Obtained dried powder and silicon carbide whisker 19-22 parts are poured into three-dimensional mixer together to be mixed
Processing, incorporation time 3-5h, mixing material is made；
3）By step 2）In mixing material be divided into A, B and C part；
4）Cobalt powder 16-20 parts and diadust 24-30 parts are poured into three-dimensional mixer and carry out mixed processing together, is mixed
Time is 1-3h, and mixed-powder is made；
5）By step 4）Obtained mixed-powder is divided into 18 parts, is then sintered using high temperature insostatic pressing (HIP) method, sintering temperature
Spend for 1495-1600 DEG C, sintering time is 4-8 hours, makees pressure medium using nitrogen, pressure 180-210Mpa, is made 18
Individual reinforcement scale, it is standby；
6）By step 3）In A part mixing materials be poured into pressing mold, flattening-out, be then covered with step 5）Obtained wherein 9 reinforcements
Scale, then by step 3）In B part mixing materials be poured into pressing mold, step 5 is spread after flattening-out）Obtained other 9 add
Strong scale, finally pours into step 3）In C part mixed-powders, flattening-out, then carry out compressing processing, be stripped, green compact be made, it is standby
With；
7）By step 6）Obtained green compact, which are placed in sintering furnace, carries out pressure sintering processing, cooling, sintered body is made, standby；
8）By step 7）Obtained sintered body, which is placed in 10-30Pa vacuum drying oven, carries out vacuum heat；Then will be through Vacuum Heat
The sintered body of processing is incubated in the heating furnace that argon gas is protected, and carries out water quenching immediately, this vacuum heat-insulation-water
The process quenched is one cycle heat treatment, carries out four cycle heat treatments altogether, produces sheet material.
A kind of 6. preparation method of the sheet material of high intensity as claimed in claim 5, it is characterised in that：The step 7）In plus
The pressure pressure for pressing sintering processes is 4000-8000MPa, and the pressure time is 40-60 minutes, the heating of the pressure sintering processing
Temperature is 900-1000 DEG C, heat time 40-60min.
A kind of 7. preparation method of the sheet material of high intensity as claimed in claim 5, it is characterised in that：The step 8）In it is true
The heating-up temperature of sky heat treatment is 500-600 DEG C, heat time 40-60min, the step 8）In holding temperature be 450-
500 DEG C, soaking time 15-30min.
A kind of 8. preparation method of the sheet material of high intensity as claimed in claim 7, it is characterised in that：The step 6）In first
The reinforcement scale rectangular array distribution of secondary tiling.
A kind of 9. preparation method of the sheet material of high intensity as claimed in claim 7, it is characterised in that：The step 6）In second
The reinforcement scale circular array distribution of secondary tiling.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538634A (en) * | 2018-10-20 | 2019-03-29 | 夏小林 | A kind of bearing inner race, preparation method and bearing |
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| CN105401034A (en) * | 2015-12-12 | 2016-03-16 | 河南广度超硬材料有限公司 | High-density polycrystalline superhard material and preparation method thereof |
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Application publication date: 20180306 |