CN108971497A - A kind of Whole PC BN blade and preparation method thereof - Google Patents

A kind of Whole PC BN blade and preparation method thereof Download PDF

Info

Publication number
CN108971497A
CN108971497A CN201811016021.7A CN201811016021A CN108971497A CN 108971497 A CN108971497 A CN 108971497A CN 201811016021 A CN201811016021 A CN 201811016021A CN 108971497 A CN108971497 A CN 108971497A
Authority
CN
China
Prior art keywords
powder
ball
blade
ball milling
whole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201811016021.7A
Other languages
Chinese (zh)
Inventor
卢国孝
李春生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhu Dege Intelligent Technology Co Ltd
Original Assignee
Wuhu Dege Intelligent Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhu Dege Intelligent Technology Co Ltd filed Critical Wuhu Dege Intelligent Technology Co Ltd
Priority to CN201811016021.7A priority Critical patent/CN108971497A/en
Publication of CN108971497A publication Critical patent/CN108971497A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F1/0003
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/10Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12Both compacting and sintering
    • B22F3/14Both compacting and sintering simultaneously
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C47/00Making alloys containing metallic or non-metallic fibres or filaments
    • C22C47/14Making alloys containing metallic or non-metallic fibres or filaments by powder metallurgy, i.e. by processing mixtures of metal powder and fibres or filaments
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C49/00Alloys containing metallic or non-metallic fibres or filaments
    • C22C49/02Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C49/00Alloys containing metallic or non-metallic fibres or filaments
    • C22C49/14Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12Both compacting and sintering
    • B22F3/14Both compacting and sintering simultaneously
    • B22F2003/145Both compacting and sintering simultaneously by warm compacting, below debindering temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/001Cutting tools, earth boring or grinding tool other than table ware
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10Processes characterised by the sequence of their steps

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Products (AREA)

Abstract

The invention discloses a kind of Whole PC BN blade and preparation method thereof, which includes: 1) to be heat-treated cobalt powder, nickel powder, silicon powder, palladium powder in the presence of protecting gas, and then cooling, first ball milling obtains ball milling object;2) ball milling object, aluminium oxide, titanium nitride, silicon carbide are subjected to secondary ball milling and obtain mixture;3) it carries out mixture, potassium titanate crystal whisker, graphene to be mixed to get binder;4) CBN monocrystalline powder, binder are mixed, is then suppressed to obtain Whole PC BN blade in the presence of protective gas.Whole PC BN blade of the present invention has excellent fracture toughness, and process is simple, raw material is easy to get.

Description

A kind of Whole PC BN blade and preparation method thereof
Technical field
The present invention relates to PCBN blades, and in particular, to a kind of Whole PC BN blade and preparation method thereof.
Background technique
With the fast development of manufacturing technology, fundamental technology of the machining as manufacturing technology is entered to develop height Effect cutting develops new Cutting Process and processing method, provides the new stage of development that complete set technology is characterized.At the same time, it manufactures The development of technology and difficult-to-machine material pushes the development of cutting-tool engineering, and cutting-tool engineering is also towards high state cutting, high-speed cutting, height The direction of precision and dry-type processing is developed.Can be achieved high efficiency, high stability, long-life processing superhard cutter application also day It gradually popularizes, is played an important role in fields such as automobile, aerospace, the energy, military affairs, molds.
In machining, cutter material is to determine one of processing efficiency, processing quality and key factor of processing cost, Correct selection and application cutter material are most important.Modern cutter material is mainly high-speed steel, hard alloy and ceramics, they lead The hard phase constituent wanted is carbide, nitride and oxide, in addition the hardness of cutter is in HV2000 or less after binding material. Processing for certain modern difficult-to-machine materials, above-mentioned hardness have been unable to meet requirement, then ultrahard cutting tool material just meet the tendency of and It is raw.PCBN(polycrystalline cubic boron nitride) cutter, sintex, coated cutting tool etc. all have very high hardness, wearability and chemistry Stability is able to satisfy the requirement of the green manufacturings such as high-speed cutting, DRY CUTTING, hard turning.Since PCBN cutter is in processing essence The various aspects such as degree, stock-removing efficiency, cutter life have unrivaled superiority, therefore, the promotion and application of PCBN cutter Huge economic benefit can be created.
Although PCBN blade has excellent hardness, wearability, thermal stability, thermal conductivity, Young's modulus, thermal expansion, Be PCBN blade fracture toughness it is poor, not as good as the half of sintex, and then limit the development of PCBN blade.
Summary of the invention
The object of the present invention is to provide a kind of Whole PC BN blade and preparation method thereof, Whole PC BN blade has excellent Fracture toughness, while the preparation method has the advantages that process is simple and is easy to get with raw material.
To achieve the goals above, the present invention provides a kind of preparation methods of Whole PC BN blade, comprising:
1) cobalt powder, nickel powder, silicon powder, palladium powder are heat-treated in the presence of protecting gas, then cooling, first ball milling obtains ball Grind object;
2) ball milling object, aluminium oxide, titanium nitride, silicon carbide are subjected to secondary ball milling and obtain mixture;
3) it carries out mixture, potassium titanate crystal whisker, graphene to be mixed to get binder;
4) CBN monocrystalline powder, binder are mixed, is then suppressed to obtain Whole PC BN blade in the presence of protective gas.
The present invention also provides a kind of Whole PC BN blade, Whole PC BN blade is prepared by above-mentioned preparation method ?.
In the above-mentioned technical solutions, the present invention passes through that cobalt powder, nickel powder, silicon powder, palladium powder are heat-treated, ball milling obtains first Ball milling object;Then add aluminium oxide, titanium nitride, silicon carbide carry out secondary ball milling obtain mixture, finally add potassium titanate crystal whisker, Graphene carries out being mixed to get Whole PC BN blade.The binder makes entirety obtained under the collective effect of each component PCBN blade has excellent toughness, and then is convenient for the popularization of Whole PC BN blade.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Specific embodiment
Detailed description of the preferred embodiments below.It should be understood that described herein specific Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The present invention provides a kind of preparation methods of Whole PC BN blade, comprising:
1) cobalt powder, nickel powder, silicon powder, palladium powder are heat-treated in the presence of protecting gas, then cooling, first ball milling obtains ball Grind object;
2) ball milling object, aluminium oxide, titanium nitride, silicon carbide are subjected to secondary ball milling and obtain mixture;
3) it carries out mixture, potassium titanate crystal whisker, graphene to be mixed to get binder;
4) CBN monocrystalline powder, binder are mixed, is then suppressed to obtain Whole PC BN blade in the presence of protective gas.
In step 1) of the invention, the condition of heat treatment can select in a wide range, but in order to further mention The fracture toughness of Whole PC BN blade made from height, it is preferable that in step 1), heat treatment meets the following conditions: treatment temperature It is 850-950 DEG C, the processing time is 2-4h.
In step 1) of the invention, the dosage of each material can select in a wide range, but in order to further mention The fracture toughness of Whole PC BN blade made from height, it is preferable that in step 1), the weight ratio of cobalt powder, nickel powder, silicon powder, palladium powder For 5:2-2.8:0.2-0.6:0.05-0.15.
In step 1) of the invention, the condition of first ball milling can select in a wide range, but in order to further Improve the fracture toughness of Whole PC BN blade obtained, it is preferable that in step 1), first ball milling meets the following conditions: big ball It is 2:0.8-1.2 with the mass ratio of bead, the mass ratio of abrading-ball and material is 10:0.8-1.2, revolving speed 1200-1400rpm, Ball-milling Time is 40-60min.
In step 2) of the invention, the dosage of each material can select in a wide range, but in order to further mention The fracture toughness of Whole PC BN blade made from height, it is preferable that in step 2, ball milling object, aluminium oxide, titanium nitride, silicon carbide Weight ratio be 10:4-6:0.5-1:0.4-0.8.
In step 2) of the invention, the condition of secondary ball milling can select in a wide range, but in order to further Improve the fracture toughness of Whole PC BN blade obtained, it is preferable that in step 2, secondary ball milling meets the following conditions: big ball It is 2:0.8-1.2 with the mass ratio of bead, the mass ratio of abrading-ball and material is 10:2-3, revolving speed 1700-1900rpm, ball milling Time is 1.5-2h.
In step 3) of the invention, the dosage of each material can select in a wide range, but in order to further mention The fracture toughness of Whole PC BN blade made from height, it is preferable that in step 3), mixture, potassium titanate crystal whisker, graphene weight Amount is than being 10:0.8-1.2:0.1-0.3.
In step 3) of the invention, the specification of potassium titanate crystal whisker can select in a wide range, but in order into one Step improves the fracture toughness of Whole PC BN blade obtained, it is preferable that in step 3), potassium titanate crystal whisker meets: average diameter For 1-8um, average length 30-200um.
In step 4) of the invention, the dosage of each material can select in a wide range, but in order to further mention The fracture toughness of Whole PC BN blade made from height, in step 4), the CBN monocrystalline powder, binder weight ratio be 7:2- 2.5;
In step 4) of the invention, the condition of compacting can select in a wide range, but obtained in order to further increase Whole PC BN blade fracture toughness, it is preferable that in step 4), the condition of the compacting are as follows: temperature 1800-1850 DEG C, pressure 5.5-5.7GPa, pressing time 3-5min.
The present invention also provides a kind of Whole PC BN blade, Whole PC BN blade is prepared by above-mentioned preparation method ?.
The present invention will be described in detail by way of examples below.
Embodiment 1
1) by cobalt powder, nickel powder, silicon powder, palladium powder according to the weight ratio of 5:2.4:0.4:0.1 in the presence of protecting gas (helium) into Row heat treatment (treatment temperature is 900 DEG C, and the processing time is 3h), then (mass ratio of big ball and bead is for cooling, first ball milling The mass ratio of 2:1, abrading-ball and material is 10:1, revolving speed 1300rpm, Ball-milling Time 50min) obtain ball milling object;
2) the ball milling object, aluminium oxide, titanium nitride, silicon carbide are subjected to secondary ball milling according to the weight ratio of 10:5:0.8:0.6 (mass ratio of big ball and bead is 2:1, and the mass ratio of abrading-ball and material is 10:2.5, revolving speed 1800rpm, and Ball-milling Time is 1.8h) obtain mixture;
3) by the mixture, potassium titanate crystal whisker (average diameter 5um, average length 100um), graphene according to 10:1: 0.2 weight ratio carries out being mixed to get the binder A1.
Embodiment 2
1) cobalt powder, nickel powder, silicon powder, palladium powder are carried out in the presence of protecting gas (helium) according to the weight ratio of 5:2:0.2:0.05 Heat treatment (treatment temperature is 850 DEG C, and the processing time is 4h), then cooling, first ball milling (mass ratio of big ball and bead is 2: 0.8, the mass ratio of abrading-ball and material is 10:0.8, revolving speed 1200rpm, Ball-milling Time 60min) obtain ball milling object;
2) the ball milling object, aluminium oxide, titanium nitride, silicon carbide are subjected to secondary ball milling according to the weight ratio of 10:4:0.5:0.4 (mass ratio of big ball and bead is 2:0.8, and the mass ratio of abrading-ball and material is 10:2, revolving speed 1700rpm, and Ball-milling Time is 2h) obtain mixture;
3) by the mixture, potassium titanate crystal whisker (average diameter 1um, average length 200um), graphene according to 10: The weight ratio of 0.8:0.1 carries out being mixed to get the binder A2.
Embodiment 3
1) by cobalt powder, nickel powder, silicon powder, palladium powder according to the weight ratio of 5:2.8:0.6:0.15 in the presence of protecting gas (helium) into Row heat treatment (treatment temperature is 950 DEG C, and the processing time is 2h), then (mass ratio of big ball and bead is for cooling, first ball milling The mass ratio of 2:1.2, abrading-ball and material is 10:1.2, revolving speed 1400rpm, Ball-milling Time 40min) obtain ball milling object;
2) the ball milling object, aluminium oxide, titanium nitride, silicon carbide are subjected to secondary ball milling (greatly according to the weight ratio of 10:6:1:0.8 The mass ratio of ball and bead is 2:1.2, and the mass ratio of abrading-ball and material is 10:3, revolving speed 1900rpm, and Ball-milling Time is 1.5h) obtain mixture;
3) by the mixture, potassium titanate crystal whisker (average diameter 8um, average length 30um), graphene according to 10:1.2: 0.3 weight ratio carries out being mixed to get the binder A3.
Comparative example 1
It carries out that binder B1 is made according to the method for embodiment 1, except that potassium titanate crystal whisker is not used.
Comparative example 2
It carries out that binder B2 is made according to the method for embodiment 1, except that graphene is not used.
Application examples 1
CBN monocrystalline powder, binder are mixed according to the weight ratio of 7:2.3, then protection gas exist, 1800 DEG C, 3min is suppressed under conditions of 5.5GPa and obtains Whole PC BN blade, and the fracture for then detecting Whole PC BN blade by SENB method is tough Property, the results are shown in Table 1.
Table 1
Binder A1 A2 A3 B1 B2
Fracture toughness/Pam0.5 5.8 5.9 6.0 4.6 4.1
The preferred embodiment of the present invention has been described above in detail, still, the tool during present invention is not limited to the embodiments described above Body details within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, these letters Monotropic type all belongs to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally The thought of invention, it should also be regarded as the disclosure of the present invention.

Claims (7)

1. a kind of preparation method of Whole PC BN blade characterized by comprising
1) cobalt powder, nickel powder, silicon powder, palladium powder are heat-treated in the presence of protecting gas, then cooling, first ball milling obtains ball Grind object;
2) the ball milling object, aluminium oxide, titanium nitride, silicon carbide are subjected to secondary ball milling and obtain mixture;
3) it carries out the mixture, potassium titanate crystal whisker, graphene to be mixed to get binder;
4) CBN monocrystalline powder, binder are mixed, is then suppressed to obtain Whole PC BN blade in the presence of protective gas;
Wherein, in step 1):
The heat treatment meets the following conditions: treatment temperature is 850-950 DEG C, and the processing time is 2-4h;
The cobalt powder, nickel powder, silicon powder, palladium powder weight ratio be 5:2-2.8:0.2-0.6:0.05-0.15;
The first ball milling meets the following conditions: the mass ratio of big ball and bead is 2:0.8-1.2, the mass ratio of abrading-ball and material For 10:0.8-1.2, revolving speed 1200-1400rpm, Ball-milling Time 40-60min.
2. preparation method according to claim 1, wherein in step 2, the ball milling object, aluminium oxide, titanium nitride, carbon The weight ratio of SiClx is 10:4-6:0.5-1:0.4-0.8.
3. preparation method according to claim 1, wherein in step 2, the secondary ball milling meets the following conditions: big The mass ratio of ball and bead is 2:0.8-1.2, and the mass ratio of abrading-ball and material is 10:2-3, revolving speed 1700-1900rpm, ball Time consuming is 1.5-2h.
4. preparation method according to claim 1, wherein in step 3), the mixture, potassium titanate crystal whisker, graphite The weight ratio of alkene is 10:0.8-1.2:0.1-0.3.
5. preparation method according to claim 1, wherein in step 3), the potassium titanate crystal whisker meets: average diameter For 1-8um, average length 30-200um.
6. preparation method according to claim 1, wherein in step 4), the weight of the CBN monocrystalline powder, binder Than for 7:2-2.5;
Preferably, in step 4), the condition of the compacting are as follows: temperature is 1800-1850 DEG C, pressure 5.5-5.7GPa, pressure Time processed is 3-5min.
7. a kind of Whole PC BN blade, which is characterized in that the Whole PC BN blade passes through any one of claim 1-6 institute The preparation method stated is prepared.
CN201811016021.7A 2018-09-01 2018-09-01 A kind of Whole PC BN blade and preparation method thereof Withdrawn CN108971497A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811016021.7A CN108971497A (en) 2018-09-01 2018-09-01 A kind of Whole PC BN blade and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811016021.7A CN108971497A (en) 2018-09-01 2018-09-01 A kind of Whole PC BN blade and preparation method thereof

Publications (1)

Publication Number Publication Date
CN108971497A true CN108971497A (en) 2018-12-11

Family

ID=64548235

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811016021.7A Withdrawn CN108971497A (en) 2018-09-01 2018-09-01 A kind of Whole PC BN blade and preparation method thereof

Country Status (1)

Country Link
CN (1) CN108971497A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130059721A1 (en) * 2010-02-12 2013-03-07 Stefan Magnus Olof Persson Superhard element, method of using same and method of making same
CN103274702A (en) * 2013-06-14 2013-09-04 林金风 Preparation method of cubic boron nitride (CBN) binding agent
CN105908041A (en) * 2016-04-27 2016-08-31 富耐克超硬材料股份有限公司 High-tenacity polycrystalline composite material, high-tenacity polycrystalline blade and preparation method of high-tenacity polycrystalline blade
CN107500778A (en) * 2017-09-20 2017-12-22 陕西理工大学 The preparation method of three kinds of dimension material coordination plasticizing polycrystalline cubic boron nitrides

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130059721A1 (en) * 2010-02-12 2013-03-07 Stefan Magnus Olof Persson Superhard element, method of using same and method of making same
CN103274702A (en) * 2013-06-14 2013-09-04 林金风 Preparation method of cubic boron nitride (CBN) binding agent
CN105908041A (en) * 2016-04-27 2016-08-31 富耐克超硬材料股份有限公司 High-tenacity polycrystalline composite material, high-tenacity polycrystalline blade and preparation method of high-tenacity polycrystalline blade
CN107500778A (en) * 2017-09-20 2017-12-22 陕西理工大学 The preparation method of three kinds of dimension material coordination plasticizing polycrystalline cubic boron nitrides

Similar Documents

Publication Publication Date Title
CN102001053B (en) Ceramic hollow sphere composite binder cubic boron nitride grinding wheel working layer and manufacturing method thereof
CN107098704A (en) A kind of preparation method of polycrystalline cubic boron nitride sintered material
CN105088044B (en) A kind of preparation method of the mutually superhard level hard metal article of nanometer of soap-free emulsion polymeization
CN105734382A (en) Superfine metalloceramics material and preparation method thereof
CN102701772A (en) Method for preparing bolt made of carbon fiber enhanced silicon carbide composite material
CN113174524B (en) Hard alloy cutter material for high-speed milling and manufacturing method thereof
CN109136710B (en) Hard alloy and preparation method thereof
CN103880431B (en) High strength silicon nitride ceramic cutter material with good thermal conductivity and preparation method of cutter
CN112194492B (en) Silicon nitride ceramic material, preparation method and application thereof, and bulletproof flashboard
CN103741001A (en) High-hardness and high-strength PY30T hard alloy and preparation method of high-hardness and high-strength PY30T hard alloy product
CN113121237A (en) Boron carbide-based composite ceramic and preparation process thereof
CN108971497A (en) A kind of Whole PC BN blade and preparation method thereof
CN109136794A (en) Whole PC BN blade and preparation method thereof
CN108220734B (en) Raw material powder for producing cermet and method for producing cermet
CN107759227B (en) Method for preparing PcBN cutter material by catalyst method
CN109082610A (en) A kind of Whole PC BN blade binder and preparation method thereof
CN108838392A (en) Whole PC BN blade binder and preparation method thereof
CN112239828A (en) Novel hard alloy material suitable for bow of icebreaker
CN104775046A (en) TiC-Ni3Al composite material and preparation method thereof
CN109023168A (en) Compound PCBN blade and preparation method thereof
CN108838393A (en) A kind of compound PCBN blade and preparation method thereof
CN111893339A (en) Method for preparing high-performance WC-8Co-Y2O3 hard alloy by wet chemical method
CN109023172A (en) A kind of compound PCBN blade binder and preparation method thereof
CN109082611A (en) Compound PCBN blade binder and preparation method thereof
CN107500778B (en) Preparation method of three-dimensional material synergetic toughened polycrystalline cubic boron nitride

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20181211

WW01 Invention patent application withdrawn after publication