CN113084172A - Method for preparing impregnated teeth by using ultrahigh temperature and high pressure and impregnated teeth thereof - Google Patents

Method for preparing impregnated teeth by using ultrahigh temperature and high pressure and impregnated teeth thereof Download PDF

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Publication number
CN113084172A
CN113084172A CN202010612562.7A CN202010612562A CN113084172A CN 113084172 A CN113084172 A CN 113084172A CN 202010612562 A CN202010612562 A CN 202010612562A CN 113084172 A CN113084172 A CN 113084172A
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China
Prior art keywords
temperature
pressure
powder
pregnant
diamond
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CN202010612562.7A
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Chinese (zh)
Inventor
刘俊龙
骈小璇
孙如芳
邱丽花
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Zhengzhou New Asia Superhard Material Composite Co ltd
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Zhengzhou New Asia Superhard Material Composite Co ltd
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Priority to CN202010612562.7A priority Critical patent/CN113084172A/en
Publication of CN113084172A publication Critical patent/CN113084172A/en
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    • 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
    • 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
    • B22F1/17Metallic particles coated with metal
    • 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
    • B22F3/10Sintering only
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C26/00Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/46Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Powder Metallurgy (AREA)

Abstract

The invention discloses a method for preparing a pregnant inlaid tooth by using ultrahigh temperature and high pressure, which comprises the following steps: s1: mixing the matrix powder and the diamond into a formula material for later use; s2: charging the formula material of S1 into a blank core body for later use; s3: packaging the blank core body in a high-temperature and high-pressure assembly part made of pyrophyllite blocks, wherein the high-temperature and high-pressure assembly part comprises a carbon tube for heating, a cubic press is used as sintering equipment, the pyrophyllite is used as a pressure transmission medium, and the carbon tube is used as a heating element and is sintered in a high-temperature and high-pressure environment to obtain the pregnant inlaid tooth; wherein in S3, the sintering temperature in the cubic press is 600-1300 ℃, the pressure is 2-5.5GPa, and the temperature is kept for 3-10 min. The invention adopts six-surface pressurization, uniform shrinkage and more compact alloy, realizes the sintering of the pregnant inlaid teeth by adopting a high-temperature and high-pressure mode, expands a sintering pressure interval and a sintering temperature interval and reduces the risk of diamond carbonization.

Description

Method for preparing impregnated teeth by using ultrahigh temperature and high pressure and impregnated teeth thereof
Technical Field
The invention relates to a method for preparing a pregnant inlaid tooth by using ultrahigh temperature and high pressure and the pregnant inlaid tooth, belonging to the field of preparation of pregnant inlaid teeth.
Background
Along with the improvement of the complexity of the stratum, the drilling depth is higher and higher, more and more drill bit enterprises adopt the impregnated teeth as the gauge protection, cutting and the like of the drill bit, and a good effect is obtained. Impregnated-tooth drill bits also play an irreplaceable role in complex difficult-to-drill bottom layers. The traditional impregnated insert adopts a hot-pressing sintering process, namely, the impregnated insert is subjected to hot-pressing sintering in a graphite die, the pressure rise is limited, the compactness of the impregnated insert is not high, the sintering temperature is limited by the diamond carbonization temperature, and the bottleneck of performance improvement cannot be broken through. Therefore, there is a need for improvement of the prior art to overcome the above technical problems.
Disclosure of Invention
In order to solve the technical problem, the invention provides a frequency adjusting method of an ultrasonic motor, which is specifically realized by the following technical scheme:
a method for preparing a pregnant tooth inlay by using ultrahigh temperature and high pressure comprises the following steps:
s1: mixing the matrix powder and the diamond into a formula material for later use;
s2: charging the formula material of S1 into a blank core body for later use;
s3: packaging the blank core body in a high-temperature and high-pressure assembly part made of pyrophyllite blocks, wherein the high-temperature and high-pressure assembly part comprises a carbon tube for heating, a cubic press is used as sintering equipment, the pyrophyllite is used as a pressure transmission medium, and the carbon tube is used as a heating element and is sintered in a high-temperature and high-pressure environment to obtain the pregnant inlaid tooth;
wherein in S3, the sintering temperature in the cubic press is 600-1300 ℃, the pressure is 2-5.5GPa, and the temperature is kept for 3-10 min.
The priority scheme is as follows: in S1, the preparation method comprises the following specific steps: and (3) the matrix powder is subjected to one of wrapping, granulating and electroplating to combine the matrix powder with the diamond, and then the matrix powder is dried and screened to obtain the formula material.
The priority scheme is as follows: at S2, the blank core is obtained by sealing the formulation in a shielding material.
The priority scheme is as follows: at S2, the green core is obtained by placing the formulation in a shielding material and disposing an alloy mandrel therein and sealing.
The impregnated tooth prepared by the method for preparing the impregnated tooth at ultrahigh temperature and high pressure comprises two or more than two matrix powders of tungsten carbide, cobalt powder, nickel powder, titanium powder, iron powder, copper powder, chromium powder, tungsten powder and the like, wherein the particle size range of all the matrix powders is not more than 0.05mm, and the metal powder of a binding phase accounts for 1-15% by mass; the volume ratio of the diamond in the working layer is 20-60%.
The priority scheme is as follows: the diamond is a single crystal diamond.
The priority scheme is as follows: the single crystal diamond has one or more of 20/25, 25/30, 30/35, 35/40 and 40/45 in the mixed grain size
The invention has the beneficial effects that:
1. the method realizes the sintering of the pregnant inlaid teeth by adopting a high-temperature high-pressure mode, expands a sintering pressure interval and a sintering temperature interval and reduces the risk of diamond carbonization.
2. The high-temperature and high-pressure mode is adopted, the performance of the tire body is improved, and the wear resistance of the pregnant inlaid teeth is improved.
3. The impregnated tooth can adopt a method of internally arranging alloy, thereby greatly improving the shock resistance and the service life of the tooth.
4. The diamond particles are uniformly wrapped with a layer of metal powder through granulation, wrapping or electroplating, the uniformity of diamond distribution is improved, the segregation problem in the sintering process is reduced, and after the wrapping, the granulation and the electroplating, the sintering temperature of the matrix material is higher than normal when the matrix material is sintered, so that the alloying is facilitated, and the holding force of the diamond is increased.
5. The invention adopts six surfaces to pressurize, and the contraction is uniform; in addition, the performance is better, the holding force to the diamond is high, and the alloy is more compact.
Other advantageous effects of the present invention will be further described with reference to the following specific examples.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic process flow diagram;
FIG. 2 is a schematic diagram of a prior art anvil construction;
FIG. 3 is a schematic structural view of the special anvil of the present invention;
FIG. 4 top view of the present invention.
Detailed Description
As shown in the figure: the invention relates to a method for preparing a pregnant inlaid tooth by using ultrahigh temperature and high pressure, which comprises the following steps:
s1: mixing the matrix powder and the diamond into a formula material for later use; preferentially, the concrete step of preparing the formula material is to combine the matrix powder and the diamond to form the formula material by one of the methods of coating, granulating and electroplating. Compared with the traditional method, namely the method of directly mixing with the diamond adopts the traditional method, but the phenomena of mutual contact, agglomeration, aggregation and the like of diamond particles in the sintering process are easy to occur.
S2: charging the formula material of S1 into a blank core body for later use;
s3: packaging the blank core body in a high-temperature and high-pressure assembly part made of pyrophyllite blocks, wherein the high-temperature and high-pressure assembly part comprises a carbon tube for heating, a cubic press is used as sintering equipment, the pyrophyllite is used as a pressure transmission medium, and the carbon tube is used as a heating element and is sintered in a high-temperature and high-pressure environment to obtain the pregnant inlaid tooth; wherein in S3, the sintering temperature in the cubic press is 600-1300 ℃, the pressure is 2-5.5GPa, and the temperature is kept for 3-10 min. Compared with a graphite mold as sintering equipment, the sintering pressure of the cubic press as the sintering equipment in the preparation method is far higher than that of the graphite mold as the sintering equipment, so that the synthetic pressure is obviously improved, the compactness is improved, the hardness is improved, and the wear resistance is also improved. Further, in order to adapt the process of the cubic press as the sintering equipment and prevent impurities from penetrating into the cubic press during the sintering process to influence the quality of the impregnated insert, the blank core body is obtained by sealing the formula materials in the shielding materials. Because the shielding material is made into a sealed space, impurities cannot go deep into the space in the synthesis process, and compared with a synthesis method using a graphite mold as sintering equipment or other synthesis methods in the prior art, the method greatly reduces the risk of diamond particle carbonization. Is favorable for obtaining the pregnant inlaid tooth with high compactness, high purity, high hardness and good wear resistance. The shielding material may be a container made of a noble metal such as molybdenum, niobium, zirconium, tantalum, or gold foil.
The following steps are repeated: the blank is obtained by loading the formula material into a shielding material, arranging an alloy mandrel in the shielding material and sealing the shielding material. The preparation of the impregnated tooth can adopt a method of internally arranging alloy, thereby greatly improving the shock resistance and the service life of the tooth. Further, the matrix powder is a mixture of two or more of tungsten carbide, cobalt powder, nickel powder, titanium powder, iron powder, copper powder, chromium powder, tungsten powder and the like, the particle size range of all the matrix powder is not more than 0.05mm, and the metal powder of the binding phase accounts for 1-15% by mass; the volume ratio of the diamond in the working layer is 20-60%.
Preferably, the diamond is a single crystal diamond. The use of single crystal diamond has an effect on product performance or significant advantages. The single crystal diamond has the advantages of high strength, more wear resistance in the using process and long service life.
Preferably, the single crystal diamond has a grain size of one or more of 20/25, 25/30, 30/35, 35/40 and 40/45. The granularity of the single crystal diamond can be conventional in the prior art, and no matter what granularity is adopted, the preparation method provided by the invention can produce better effect compared with a method using a graphite mold as sintering equipment, and the detailed description is omitted.
The impregnated tooth is prepared by a special cubic press, the anvil adopts a special anvil, and then a pyrophyllite block special for a high-temperature and high-pressure assembly part is adopted. Specifically, the method comprises the following steps: including top hammer body 1 with locate 1 upper end bearing portion of top hammer body, the bearing portion includes the rectangular frustum of prism body 2 and is equipped with the inward depressed area 3 of 2 top surfaces of rectangular frustum of prism body, when a plurality of top hammer bodies 1 acted on, 3 formation in depressed area are used for holding the chamber that holds of equipment piece. Preferably, the recessed area 3 is semi-cylindrical. In particular, the recessed area 3 is arranged in 1/4 semi-cylindrical shape. Further, at this moment, the leaf wax block suitable for the top hammer comprises a leaf wax block body 4, and the whole leaf wax block body 4 is in a cylindrical barrel shape. The impregnated tooth prepared by the method solves the problem of inconsistent pressure gradient of the transverse periphery in the synthesis process due to the structure of the anvil and the matched leaf wax block, has small deformation of the periphery of the prepared impregnated tooth, high dimensional precision of products, uniform distribution of thickness and internal stress of diamond layers, high compactness, high purity, high hardness and greatly improved wear resistance.
The principle that can produce the above-mentioned effect lies in: the top hammer and the leaf wax block body 4 are closed into a cylinder in the synthesis process by the front, rear, left and right top hammers, the upper and lower top hammers extrude inwards, and the front, rear, left and right top hammers pressurize along with the pressurization of the upper and lower top hammers to keep a closed state. Cylindric equipment piece pyrophyllite layer promptly 4 thickness of the pyrophyllite body is even unanimous, when receiving "upper and lower, preceding, back, left and right" 6 top hammers and pressurize, has overcome because the inconsistent defect of thickness a department and b of equipment piece pyrophyllite layer thickness by outside to inside for 4 circumferences of the pyrophyllite body received pressure is the same, and the pyrophyllite compression capacity keeps unanimous, and the product circumference deflection of synthesizing is little, has improved the quality of product by a wide margin. Furthermore, other parts of the high-temperature and high-pressure assembly can be realized by using a supercharged pyrophyllite assembly block for synthesis, which is disclosed by the invention under the authorization publication number of CN208449264U, and is not described again.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims (8)

1. The method for preparing the pregnant inlaid tooth by using the ultrahigh temperature and the high pressure is characterized by comprising the following steps of:
s1: mixing the matrix powder and the diamond into a formula material for later use;
s2: charging the formula material of S1 into a blank core body for later use;
s3: packaging the blank core body in a high-temperature and high-pressure assembly part made of pyrophyllite blocks, wherein the high-temperature and high-pressure assembly part comprises a carbon tube for heating, a cubic press is used as sintering equipment, the pyrophyllite is used as a pressure transmission medium, and the carbon tube is used as a heating element and is sintered in a high-temperature and high-pressure environment to obtain the pregnant inlaid tooth;
wherein in S3, the sintering temperature in the cubic press is 600-1300 ℃, the pressure is 2-5.5GPa, and the temperature is kept for 3-10 min.
2. The method for preparing a pregnant button using ultra high temperature and pressure as claimed in claim 1, wherein: in S3, the cubic apparatus press includes the anvil, the anvil includes the anvil body and locates anvil body upper end bearing portion, the bearing portion includes the quadrangular frustum pyramid body and is equipped with the inward depressed area of quadrangular frustum pyramid body top surface, when a plurality of anvil bodies acted on, the depressed area formed the chamber depressed area that holds that is used for holding the equipment piece becomes the half cylinder, installation high temperature high pressure assembly spare in the half cylinder.
3. The method for preparing a pregnant button using ultra high temperature and pressure as claimed in claim 1, wherein: in S1, the preparation method comprises the following specific steps: and (3) the matrix powder is subjected to one of wrapping, granulating and electroplating to combine the matrix powder with the diamond, and then the matrix powder is dried and screened to obtain the formula material.
4. The method for preparing a pregnant button using ultra high temperature and pressure as claimed in claim 1, wherein: at S2, the blank core is obtained by sealing the formulation in a shielding material.
5. The method for preparing a pregnant button using ultra high temperature and pressure as claimed in claim 1, wherein: at S2, the green core is obtained by placing the formulation in a shielding material and disposing an alloy mandrel therein and sealing.
6. The impregnated tooth prepared by the method for preparing the impregnated tooth by using the ultrahigh temperature and the high pressure according to any one of the claims 1 to 5, is characterized in that: the matrix powder is a mixture of two or more of tungsten carbide, cobalt powder, nickel powder, titanium powder, iron powder, copper powder, chromium powder, tungsten powder and the like, the particle size range of all the matrix powder is less than or equal to 0.05mm, and the metal powder of the binder phase accounts for 1-15% by mass; the volume ratio of the diamond in the working layer is 20-60%.
7. The insert according to claim 6, wherein: the diamond is a single crystal diamond.
8. The insert according to claim 6, wherein: the single crystal diamond has one or more of 20/25, 25/30, 30/35, 35/40 and 40/45.
CN202010612562.7A 2020-06-30 2020-06-30 Method for preparing impregnated teeth by using ultrahigh temperature and high pressure and impregnated teeth thereof Pending CN113084172A (en)

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CN202010612562.7A CN113084172A (en) 2020-06-30 2020-06-30 Method for preparing impregnated teeth by using ultrahigh temperature and high pressure and impregnated teeth thereof

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Application Number Priority Date Filing Date Title
CN202010612562.7A CN113084172A (en) 2020-06-30 2020-06-30 Method for preparing impregnated teeth by using ultrahigh temperature and high pressure and impregnated teeth thereof

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201020356Y (en) * 2007-03-06 2008-02-13 四川大学原子与分子物理研究所 Temperature measuring and controlling device in hexahedral top pressure airtight synthetic cavity
CN202516531U (en) * 2012-04-19 2012-11-07 山东日能超硬材料有限公司 Pressure-equalizing diamond synthesizing device
CN106007730A (en) * 2016-05-19 2016-10-12 富耐克超硬材料股份有限公司 Method using coating cubic boron nitride to prepare polycrystalline cubic boron nitride
CN107598174A (en) * 2017-10-12 2018-01-19 郑州博特硬质材料有限公司 A kind of integral sintered polycrystalline diamond button and preparation method thereof
CN108119065A (en) * 2017-11-13 2018-06-05 中国石油天然气股份有限公司 Diamond-impregnated bit cutting tooth and manufacturing method thereof
CN208449264U (en) * 2018-03-20 2019-02-01 郑州新亚复合超硬材料有限公司 Boosting type pyrophillite for synthesis assembles block

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201020356Y (en) * 2007-03-06 2008-02-13 四川大学原子与分子物理研究所 Temperature measuring and controlling device in hexahedral top pressure airtight synthetic cavity
CN202516531U (en) * 2012-04-19 2012-11-07 山东日能超硬材料有限公司 Pressure-equalizing diamond synthesizing device
CN106007730A (en) * 2016-05-19 2016-10-12 富耐克超硬材料股份有限公司 Method using coating cubic boron nitride to prepare polycrystalline cubic boron nitride
CN107598174A (en) * 2017-10-12 2018-01-19 郑州博特硬质材料有限公司 A kind of integral sintered polycrystalline diamond button and preparation method thereof
CN108119065A (en) * 2017-11-13 2018-06-05 中国石油天然气股份有限公司 Diamond-impregnated bit cutting tooth and manufacturing method thereof
CN208449264U (en) * 2018-03-20 2019-02-01 郑州新亚复合超硬材料有限公司 Boosting type pyrophillite for synthesis assembles block

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