CN117403089A - Preparation method of high-toughness high-hardness wear-resistant block - Google Patents
Preparation method of high-toughness high-hardness wear-resistant block Download PDFInfo
- Publication number
- CN117403089A CN117403089A CN202311338218.3A CN202311338218A CN117403089A CN 117403089 A CN117403089 A CN 117403089A CN 202311338218 A CN202311338218 A CN 202311338218A CN 117403089 A CN117403089 A CN 117403089A
- Authority
- CN
- China
- Prior art keywords
- diamond
- metal
- resistant block
- percent
- wear
- 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.)
- Pending
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000010432 diamond Substances 0.000 claims abstract description 188
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 188
- 239000000463 material Substances 0.000 claims abstract description 136
- 229910052751 metal Inorganic materials 0.000 claims abstract description 104
- 239000002184 metal Substances 0.000 claims abstract description 103
- 239000000843 powder Substances 0.000 claims abstract description 90
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 45
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 21
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000002245 particle Substances 0.000 claims abstract description 21
- 239000010936 titanium Substances 0.000 claims abstract description 21
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 21
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 21
- 239000010937 tungsten Substances 0.000 claims abstract description 21
- 229910052779 Neodymium Inorganic materials 0.000 claims abstract description 14
- 229910052773 Promethium Inorganic materials 0.000 claims abstract description 14
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims abstract description 14
- VQMWBBYLQSCNPO-UHFFFAOYSA-N promethium atom Chemical compound [Pm] VQMWBBYLQSCNPO-UHFFFAOYSA-N 0.000 claims abstract description 14
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000012634 fragment Substances 0.000 claims abstract description 12
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 11
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 229910052802 copper Inorganic materials 0.000 claims abstract description 11
- 239000010949 copper Substances 0.000 claims abstract description 11
- 238000000227 grinding Methods 0.000 claims abstract description 11
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 11
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 10
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000011593 sulfur Substances 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims description 48
- 238000001816 cooling Methods 0.000 claims description 47
- 238000003825 pressing Methods 0.000 claims description 35
- 238000010438 heat treatment Methods 0.000 claims description 32
- 239000000203 mixture Substances 0.000 claims description 28
- 229910021538 borax Inorganic materials 0.000 claims description 22
- 239000004328 sodium tetraborate Substances 0.000 claims description 22
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 22
- OMAWWKIPXLIPDE-UHFFFAOYSA-N (ethyldiselanyl)ethane Chemical compound CC[Se][Se]CC OMAWWKIPXLIPDE-UHFFFAOYSA-N 0.000 claims description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 229910001930 tungsten oxide Inorganic materials 0.000 claims description 20
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 19
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 claims description 19
- 229910052700 potassium Inorganic materials 0.000 claims description 19
- 239000011591 potassium Substances 0.000 claims description 19
- 238000005299 abrasion Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 18
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 claims description 17
- 229910044991 metal oxide Inorganic materials 0.000 claims description 17
- 229910000480 nickel oxide Inorganic materials 0.000 claims description 14
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims description 14
- 238000005245 sintering Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000000498 ball milling Methods 0.000 claims description 10
- 238000003754 machining Methods 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000012153 distilled water Substances 0.000 claims description 6
- 238000001291 vacuum drying Methods 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 5
- 238000003801 milling Methods 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 2
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000011800 void material Substances 0.000 claims 1
- 238000005219 brazing Methods 0.000 abstract description 10
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 description 19
- 238000005260 corrosion Methods 0.000 description 19
- 229910052761 rare earth metal Inorganic materials 0.000 description 9
- 230000006872 improvement Effects 0.000 description 8
- 239000000654 additive Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 229910015900 BF3 Inorganic materials 0.000 description 2
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001447 alkali salts Chemical class 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000010437 gem Substances 0.000 description 1
- 229910001751 gemstone Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- VVRQVWSVLMGPRN-UHFFFAOYSA-N oxotungsten Chemical class [W]=O VVRQVWSVLMGPRN-UHFFFAOYSA-N 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/04—Compacting only by applying fluid pressure, e.g. by cold isostatic pressing [CIP]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/247—Removing material: carving, cleaning, grinding, hobbing, honing, lapping, polishing, milling, shaving, skiving, turning the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/041—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by mechanical alloying, e.g. blending, milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention relates to the technical field of wear-resistant block preparation, and discloses a preparation method of a high-toughness high-hardness wear-resistant block, which comprises the following steps: s1, placing diamond in a container, then pouring an acetone solution, and finally placing the diamond in an ultrasonic cleaner for cleaning for 10min; s2, drying the cleaned diamond for 48 hours in a room temperature environment; s3, crushing the dried diamond into fragments with the diameter smaller than 3cm by a crusher, and grinding the fragments into powder by a grinder to obtain diamond micro powder, wherein the average diameter of diamond micro powder particles is 10 mu m; s4, crushing materials such as titanium metal, chromium metal, molybdenum metal, vanadium metal, copper metal, cerium metal, neodymium metal, tungsten metal, sulfur, promethium metal and the like into powder. The wear-resistant block obtained by the preparation method of the high-hardness high-toughness wear-resistant block provided by the invention has the advantages of high hardness, good toughness, strong compression resistance and easiness in brazing.
Description
Technical Field
The invention relates to the technical field of wear-resistant block preparation, in particular to a preparation method of a high-toughness high-hardness wear-resistant block.
Background
At present, the diamond wear-resistant block has excellent performances such as high hardness, high wear resistance, excellent thermal conductivity and the like, is widely applied to processing hard and brittle hard-to-process materials such as hard alloy, ceramic, glass, precious stone and the like, but has very high interface energy between diamond with a covalent bond structure and general metal, and general mechanical inlaying and physical adsorption have insufficient holding force, so that since the beginning of 90 th century in 20 th year, the research and development of new-generation diamond tools by adopting a high-temperature brazing process in foreign countries and Taiwan regions in China are carried out, and chemical metallurgical bonding is formed at the interface of metal brazing filler metal and superhard abrasive particles by utilizing active metal elements, thereby greatly improving the holding strength bonding strength of the bonding agent on the diamond wear-resistant block.
However, in the test process, the diamond wear-resistant block still has the problems of relatively low toughness, relatively low compressive strength, difficulty in brazing and the like.
Disclosure of Invention
In order to solve the technical problems, the invention provides a preparation method of a high-toughness high-hardness wear-resistant block.
The invention is realized by adopting the following technical scheme: the preparation method of the high-toughness high-hardness wear-resistant block comprises the following steps:
s1, placing diamond in a container, then pouring an acetone solution, and finally placing the diamond in an ultrasonic cleaner for cleaning for 10min;
the diamond is cleaned, so that the influence of impurities on the surface of the diamond on the processing effect of the diamond can be avoided.
S2, drying the cleaned diamond for 48 hours in a room temperature environment;
s3, crushing the dried diamond into fragments with the diameter smaller than 3cm by a crusher, and grinding the fragments into powder by a grinder to obtain diamond micro powder, wherein the average diameter of diamond micro powder particles is 10 mu m;
s4, crushing materials such as titanium metal, chromium metal, molybdenum metal, vanadium metal, copper metal, cerium metal, neodymium metal, tungsten metal, sulfur, promethium metal and the like into powder with the granularity of more than 200 meshes, adding the powder into diamond powder according to a proportion, and mixing all the materials with diamond micro powder through a mixer;
the hardness and wear resistance of the material can be obviously improved by mixing diamond with other materials, so that the material has good heat conduction performance, the heat conduction performance of the material can be improved by mixing the diamond with diamond powder, the strength and toughness of the material can be improved by adding diamond micropowder, the material is more durable and stretch-proof, the diamond has good chemical stability, and the corrosion resistance and oxidation resistance of the material can be improved by mixing the diamond micropowder with metal powder.
Therefore, the hardness, the wear resistance, the thermal conductivity, the strength, the toughness and the chemical stability of the material can be obviously improved by mixing the metal material powder with the diamond micro powder.
S5, adding borax, potassium borofluoride, cobalt tungstate, carbonyl chloride, molybdenum metal oxide, nickel oxide and tungsten oxide in proportion while mixing materials;
since borax, potassium borofluoride, cobalt tungstate, carbonyl chloride, molybdenum metal oxide, nickel oxide and tungsten oxide all have good hardness and wear resistance, the addition thereof to the mixed material can further improve the hardness and wear resistance of the material.
Borax, potassium borofluoride, cobalt tungstate, carbonyl chloride, molybdenum metal oxide, nickel oxide and tungsten oxide have good corrosion resistance, and the addition of the boron fluoride, the cobalt tungstate, the carbonyl chloride, the molybdenum metal oxide and the nickel oxide to the mixed material can improve the corrosion resistance of the material, so that the boron fluoride has better durability under severe environments.
The cobalt tungstate, the molybdenum metal oxide and the tungsten oxide have good heat conduction performance, and the heat conduction performance of the material can be improved by adding the cobalt tungstate, the molybdenum metal oxide and the tungsten oxide into the mixed material, so that the cobalt tungstate, the molybdenum metal oxide and the tungsten oxide are more effective in the application requiring high heat conduction.
The addition of cobalt tungstate, molybdenum metal oxides and tungsten oxides can increase the strength and toughness of the material, so that the material has better performance in applications requiring high strength and toughness.
Therefore, the borax, the potassium borofluoride, the cobalt tungstate, the carbonyl chloride, the molybdenum metal oxide, the nickel oxide and the tungsten oxide are added into the mixed material according to the proportion, so that the hardness, the wear resistance, the corrosion resistance, the heat conductivity, the strength and the toughness of the material can be improved.
S6, pressing the proportioned diamond mixture powder to form a square preform, wherein the powder is pressed by a press in a hydraulic manner, the pressure of the hydraulic press is 40-120 MPa, and the pressure maintaining time is 350-500 seconds;
s7, performing secondary isostatic cool pressing on the square preform to obtain a pressed compact, wherein the pressure of the cold isostatic press is 170-250 MPa, the dwell time is 3-10 minutes, and then performing pressure sintering on the pressed compact to obtain a hard diamond abrasion-resistant block;
s8, heating the diamond abrasion-resistant block to 1300-1600 ℃ and preserving heat for 20-30 min, air-cooling to room temperature, then heating to 750-790 ℃, preserving heat for 30-120 min, then heating to 900-1100 ℃, preserving heat for 60-120 min, heating up to 120-0 ℃/h, cooling to 300-350 ℃ after cooling to the surface temperature by water, putting the diamond abrasion-resistant block into a quenching oil medium at 30-45 ℃ and cooling to 155-165 ℃, cooling to 50-60 ℃, finally heating to 550-650 ℃, preserving heat for 60-90 min, cooling to room temperature, then heating to 200-250 ℃ again, preserving heat for 60-90 min, and cooling to room temperature;
s9, machining the diamond wear-resistant block to obtain the wear-resistant block with the specific shape.
As a further improvement of the scheme, the diamond comprises the following chemical components in percentage by weight: titanium metal: 0.58 to 0.9 percent of chromium metal: 1 to 1.35 percent of molybdenum metal: 0.07 to 0.18 percent of vanadium metal: 0.03 to 0.2 percent of copper metal: 0.07 to 0.18 percent of cerium metal: 0.15 to 0.22 percent of neodymium metal: 0.01 to 0.03 percent of tungsten: 0.15 to 0.38 percent, S is less than or equal to 0.03 percent, and promethium metal: 0.01 to 0.02 percent of borax: 1-3% of potassium borofluoride: 0.3 to 0.9 percent of cobalt tungstate: 0.5 to 1.5 percent of carbonyl chloride: 1 to 2.3 percent of oxide of molybdenum metal: 0.5 to 1 percent of oxide of nickel: 0.5 to 1.3 percent of tungsten oxide: 0.2 to 0.8 percent, and the balance of diamond and unavoidable impurities.
As a further improvement of the above scheme, the weight percentages of chromium metal, tungsten metal, molybdenum metal and titanium metal satisfy the following relation: chromium metal, tungsten and molybdenum metal are more than or equal to 3.7 multiplied by titanium metal.
As a further improvement of the above scheme, in S8, in the process of cooling to below 0 ℃ and room temperature, cooling to 0 ℃ and room temperature at a cooling speed of 70-85 ℃/h, and in S9, machining includes wire saw cutting, numerical control milling and grinding.
As a further improvement of the scheme, the diamond is selected from screened artificial diamond-polycrystalline diamond, and the polycrystalline diamond is a composite material formed by sintering artificial diamond micro powder with a small amount of binding agent under high temperature and high pressure conditions, and has the characteristics of high hardness, good wear resistance, high heat conductivity, high work efficiency, long service life and good processing quality.
As a further improvement of the above scheme, in the step S3, the obtained diamond micro powder particles are put into a silver crucible, then NaOH is added for uniform mixing, then the mixture is heated to 600 ℃ until the solution becomes pink, then cooled to room temperature, and dried in a vacuum drying oven after being washed to be neutral by distilled water.
As a further improvement of the scheme, in the step S4, the mixer adopts a wet ball milling mode to mix materials, and ZrO is used during mixing 2 The balls are ball milling media, the ball material ratio is 8:1, and during mixing, absolute ethyl alcohol is added as a dispersing agent to carry out mixing, the mixing speed is 400r/min, and the time is 3h.
As a further improvement of the above scheme, in step S6, the proportioned diamond mixture powder is pressed, and the following points should be noted:
(1) Before pressing, cleaning a pressing machine top hammer, and keeping the surface finish of the pressing machine top hammer to avoid foreign matters;
(2) When in pressing, the material cannot enter the range of the safety baffle of the pressing machine so as not to harm the body of an operator.
As a further improvement of the scheme, the diamond adopts mixed granularity, and the gap size is reduced through the stacking density, so that the density of the wear-resisting block is improved.
Compared with the prior art, the invention has the beneficial effects that:
the proportion of diamond in the wear-resistant block is reduced, rare earth element materials such as neodymium metal, molybdenum metal, promethium metal and the like are added, so that the wettability of the diamond can be improved, the bonding capability of the diamond is enhanced, and the addition of the rare earth element can improve the bending strength, the wear resistance, the impact toughness and the like of the matrix material, so that the quality of the diamond wear-resistant block is improved; the rare earth element can reduce the melting point of the bonding metal and the sintering temperature of the diamond abrasion-resistant block, so that the quality degradation of the diamond caused by the high temperature of a hot pressing method is reduced; and borax, potassium borofluoride, cobalt tungstate, carbonyl chloride, molybdenum metal oxide, nickel oxide, tungsten oxide and the like can be used as soldering flux to assist the fusion of diamond and other materials, and the materials can also play a role in assisting in brazing, so that the diamond is more stable in brazing, wherein the borax can form a liquid film on the surface of the wear-resistant block to prevent the liquid film from being oxidized.
Detailed Description
The present invention will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.
Example 1:
the preparation method of the high-toughness high-hardness wear-resistant block comprises the following steps:
s1, placing diamond in a container, then pouring an acetone solution, and finally placing the diamond in an ultrasonic cleaner for cleaning for 10min;
s2, drying the cleaned diamond for 48 hours in a room temperature environment;
s3, crushing the dried diamond into fragments with the diameter smaller than 3cm by a crusher, and grinding the fragments into powder by a grinder to obtain diamond micro powder, wherein the average diameter of diamond micro powder particles is 10 mu m;
s4, crushing materials such as titanium metal, chromium metal, molybdenum metal, vanadium metal, copper metal, cerium metal, neodymium metal, tungsten metal, sulfur, promethium metal and the like into powder with the granularity of more than 200 meshes, adding the powder into diamond powder according to a proportion, and mixing all the materials with diamond micro powder through a mixer;
the mixing machine can fully mix various materials with the diamond micro powder, so that the particle distribution of the various materials is more uniform, the uniformity of the materials is improved, the diamond is a material with extremely high hardness, and the hardness and the strength of the mixed materials can be improved by adding the diamond micro powder, so that the mixed materials have better wear resistance and corrosion resistance.
The diamond not only has excellent heat conduction performance, but also has extremely high hardness and wear resistance, and the heat conduction performance of the mixed material can be improved by adding the diamond micro powder, so that the mixed material is suitable for high temperature and high pressure, and the wear resistance of the mixed material can be improved by adding the diamond micro powder, and the service life of the material can be prolonged.
The performance of the material can be adjusted by mixing different materials with the diamond micro powder, so that the material has multiple functions, such as wear resistance, heat conduction, corrosion resistance and the like, and the requirements of different fields are met, so that the uniformity, strength, hardness, heat conduction and wear resistance of the material can be improved by mixing various metal powders with the diamond micro powder, and the versatility of the material is increased.
S5, adding borax, potassium borofluoride, cobalt tungstate, carbonyl chloride, molybdenum metal oxide, nickel oxide and tungsten oxide in proportion while mixing materials;
the additive such as borax, potassium borofluoride and the like has good wear resistance, can increase the wear resistance of the mixed material, has good corrosion resistance, can increase the corrosion resistance of the mixed material, ensures that the mixed material has better stability in corrosive media such as acid and alkali, has high hardness and high strength, can increase the hardness and strength of the mixed material, improves the durability and service life, and has good heat conductivity and can increase the heat conductivity of the mixed material.
By adding different additives, the properties of the mixed material can be regulated, so that the mixed material has multiple functions, such as wear resistance, corrosion resistance, high hardness, high strength, high thermal conductivity and the like, and meets the requirements.
S6, pressing the proportioned diamond mixture powder to form a square preform, wherein the powder is pressed by a press in a hydraulic manner, the pressure of the hydraulic press is 40-120 MPa, and the pressure maintaining time is 350-500 seconds;
s7, performing secondary isostatic cool pressing on the square preform to obtain a pressed compact, wherein the pressure of the cold isostatic press is 170-250 MPa, the dwell time is 3-10 minutes, and then performing pressure sintering on the pressed compact to obtain a hard diamond abrasion-resistant block;
s8, heating the diamond abrasion-resistant block to 1300-1600 ℃ and preserving heat for 20-30 min, air-cooling to room temperature, then heating to 750-790 ℃, preserving heat for 30-120 min, then heating to 900-1100 ℃, preserving heat for 60-120 min, heating up to 120-0 ℃/h, cooling to 300-350 ℃ after cooling to the surface temperature by water, putting the diamond abrasion-resistant block into a quenching oil medium at 30-45 ℃ and cooling to 155-165 ℃, cooling to 50-60 ℃, finally heating to 550-650 ℃, preserving heat for 60-90 min, cooling to room temperature, then heating to 200-250 ℃ again, preserving heat for 60-90 min, and cooling to room temperature;
s9, machining the diamond wear-resistant block to obtain the wear-resistant block with the specific shape.
The diamond comprises the following chemical components in percentage by weight: titanium metal: 0.58 to 0.9 percent of chromium metal: 1 to 1.35 percent of molybdenum metal: 0.07 to 0.18 percent of vanadium metal: 0.03 to 0.2 percent of copper metal: 0.07 to 0.18 percent of cerium metal: 0.15 to 0.22 percent of neodymium metal: 0.01 to 0.03 percent of tungsten: 0.15 to 0.38 percent, S is less than or equal to 0.03 percent, and promethium metal: 0.01 to 0.02 percent of borax: 1-3% of potassium borofluoride: 0.3 to 0.9 percent of cobalt tungstate: 0.5 to 1.5 percent of carbonyl chloride: 1 to 2.3 percent of oxide of molybdenum metal: 0.5 to 1 percent of oxide of nickel: 0.5 to 1.3 percent of tungsten oxide: 0.2 to 0.8 percent, and the balance of diamond and unavoidable impurities.
The weight percentages of the chromium metal, the tungsten metal, the molybdenum metal and the titanium metal meet the following relational expression: chromium metal, tungsten and molybdenum metal are more than or equal to 3.7 multiplied by titanium metal.
In the step S8, in the process of cooling to the temperature below 0 ℃, cooling to the temperature of 0 ℃ at the cooling speed of 70-85 ℃/h, and in the step S9, machining comprises wire saw cutting, numerical control milling and grinding.
The diamond is selected from screened artificial diamond-polycrystalline diamond, and the polycrystalline diamond is a composite material formed by sintering artificial diamond micropowder with a small amount of binding agent under high temperature and high pressure conditions, and has the characteristics of high hardness, good wear resistance, high heat conductivity, high work efficiency, long service life and good processing quality.
In the step S3, the obtained diamond micro powder particles are put into a silver crucible, naOH is added for uniform mixing, then the mixture is heated to 600 ℃ until the solution is pink, then the mixture is cooled to room temperature, and the mixture is washed to be neutral by distilled water and then is placed into a vacuum drying oven for drying.
Diamond is an extremely hard material having excellent wear resistance and high temperature resistance, so that the addition of diamond micropowder particles to the mixture can increase the hardness and wear resistance of the material.
NaOH is an alkaline substance and can react with diamond micro powder particles to form basic salts of diamond, and the reaction can improve the dispersibility and stability of the diamond micro powder particles, so that the diamond micro powder particles are easier to mix with other materials, and the performance of the materials is improved.
Heating the mixture to 600 ℃ can promote the reaction to be carried out, so that diamond micro powder particles can better react with NaOH to form stable compounds, and in addition, the heat treatment can remove moisture and impurities in the mixture, so that the purity and stability of the material are improved.
Residual NaOH and other impurities can be removed by flushing the mixture with distilled water, so that the material is purer, the water can be rapidly removed by using a vacuum drying oven, the material is prevented from being damped and oxidized, and the stability and quality of the material are improved.
Therefore, the dispersibility and stability of the material can be improved by mixing the diamond micro powder particles with NaOH and carrying out subsequent treatment, the hardness, wear resistance and high temperature resistance of the material are improved, and meanwhile, impurities and moisture are removed, so that the purity and stability of the material are improved. These advantages allow for better performance and reliability of the material in a variety of applications.
In the step S4, the mixer adopts a wet ball milling mode to mix materials, and ZrO is used during mixing 2 The balls are ball milling media, the ball material ratio is 8:1, and during mixing, absolute ethyl alcohol is added as a dispersing agent to carry out mixing, the mixing speed is 400r/min, and the time is 3h.
In the step S6, the proportioned diamond mixture powder is pressed, and the following points need to be noted:
(1) Before pressing, cleaning a pressing machine top hammer, and keeping the surface finish of the pressing machine top hammer to avoid foreign matters;
(2) When in pressing, the material cannot enter the range of the safety baffle of the pressing machine so as not to harm the body of an operator.
The diamond adopts mixed granularity, reduces the size of a gap through stacking density, and further improves the density of the wear-resisting block.
The implementation principle of the preparation method of the high-toughness high-hardness wear-resistant block in the embodiment of the application is as follows: .
The proportion of diamond in the wear-resistant block is reduced, rare earth element materials such as neodymium metal, molybdenum metal, promethium metal and the like are added, so that the wettability of the diamond can be improved, the bonding capability of the diamond is enhanced, and the addition of the rare earth element can improve the bending strength, the wear resistance, the impact toughness and the like of the matrix material, thereby improving the quality of the diamond wear-resistant block; the rare earth element can reduce the melting point of the bonding metal and the sintering temperature of the diamond abrasion-resistant block, so that the quality degradation of the diamond caused by the high temperature of a hot pressing method is reduced; and borax, potassium borofluoride, cobalt tungstate, carbonyl chloride, molybdenum metal oxide, nickel oxide, tungsten oxide and the like can be used as soldering flux to assist the fusion of diamond and other materials, and the materials can also play a role in assisting in brazing, so that the diamond is more stable in brazing, wherein the borax can form a liquid film on the surface of the wear-resistant block to prevent the liquid film from being oxidized.
Example 2:
the preparation method of the high-toughness high-hardness wear-resistant block comprises the following steps:
s1, placing diamond in a container, then pouring an acetone solution, and finally placing the diamond in an ultrasonic cleaner for cleaning for 10min;
s2, drying the cleaned diamond for 48 hours in a room temperature environment;
s3, crushing the dried diamond into fragments with the diameter smaller than 3cm by a crusher, and grinding the fragments into powder by a grinder to obtain diamond micro powder, wherein the average diameter of diamond micro powder particles is 10 mu m;
s4, crushing materials such as titanium metal, chromium metal, molybdenum metal, vanadium metal, copper metal, cerium metal, neodymium metal, tungsten metal, sulfur, promethium metal and the like into powder with the granularity of more than 200 meshes, adding the powder into diamond powder according to a proportion, and mixing all the materials with diamond micro powder through a mixer;
the mixing machine can fully mix various materials with the diamond micro powder, so that the particle distribution of the various materials is more uniform, the uniformity of the materials is improved, the diamond is a material with extremely high hardness, and the hardness and the strength of the mixed materials can be improved by adding the diamond micro powder, so that the mixed materials have better wear resistance and corrosion resistance.
The diamond not only has excellent heat conduction performance, but also has extremely high hardness and wear resistance, and the heat conduction performance of the mixed material can be improved by adding the diamond micro powder, so that the mixed material is suitable for high temperature and high pressure, and the wear resistance of the mixed material can be improved by adding the diamond micro powder, and the service life of the material can be prolonged.
The performance of the material can be adjusted by mixing different materials with the diamond micro powder, so that the material has multiple functions, such as wear resistance, heat conduction, corrosion resistance and the like, and the requirements of different fields are met, so that the uniformity, strength, hardness, heat conduction and wear resistance of the material can be improved by mixing various metal powders with the diamond micro powder, and the versatility of the material is increased.
S5, adding borax, potassium borofluoride, cobalt tungstate, carbonyl chloride, molybdenum metal oxide, nickel oxide and tungsten oxide in proportion while mixing materials;
the additive such as borax, potassium borofluoride and the like has good wear resistance, can increase the wear resistance of the mixed material, has good corrosion resistance, can increase the corrosion resistance of the mixed material, ensures that the mixed material has better stability in corrosive media such as acid and alkali, has high hardness and high strength, can increase the hardness and strength of the mixed material, improves the durability and service life, and has good heat conductivity and can increase the heat conductivity of the mixed material.
By adding different additives, the properties of the mixed material can be regulated, so that the mixed material has multiple functions, such as wear resistance, corrosion resistance, high hardness, high strength, high thermal conductivity and the like, and meets the requirements.
S6, pressing the proportioned diamond mixture powder to form a square preform, wherein the powder is pressed by a press in a hydraulic manner, the pressure of the hydraulic press is 40-120 MPa, and the pressure maintaining time is 350-500 seconds;
s7, performing secondary isostatic cool pressing on the square preform to obtain a pressed compact, wherein the pressure of the cold isostatic press is 170-250 MPa, the dwell time is 3-10 minutes, and then performing pressure sintering on the pressed compact to obtain a hard diamond abrasion-resistant block;
s8, heating the diamond abrasion-resistant block to 1300-1600 ℃ and preserving heat for 20-30 min, air-cooling to room temperature, then heating to 750-790 ℃, preserving heat for 30-120 min, then heating to 900-1100 ℃, preserving heat for 60-120 min, heating up to 120-0 ℃/h, cooling to 300-350 ℃ after cooling to the surface temperature by water, putting the diamond abrasion-resistant block into a quenching oil medium at 30-45 ℃ and cooling to 155-165 ℃, cooling to 50-60 ℃, finally heating to 550-650 ℃, preserving heat for 60-90 min, cooling to room temperature, then heating to 200-250 ℃ again, preserving heat for 60-90 min, and cooling to room temperature;
s9, machining the diamond wear-resistant block to obtain the wear-resistant block with the specific shape.
The diamond comprises the following chemical components in percentage by weight: titanium metal: 0.58%, chromium metal: 1%, molybdenum metal: 0.07%, vanadium metal: 0.03%, copper metal: 0.07%, cerium metal: 0.15 percent of neodymium metal: 0.01%, tungsten: 0.15%, S:0.03%, promethium metal: 0.01%, borax: 1% of potassium borohydride: 0.3 percent of cobalt tungstate: 0.5% of phosgene: 1%, oxide of molybdenum metal: 0%, nickel oxide: 0.5%, tungsten oxide: 0.2% of diamond and the balance of unavoidable impurities.
The weight percentages of the chromium metal, the tungsten metal, the molybdenum metal and the titanium metal meet the following relational expression: chromium metal, tungsten and molybdenum metal are more than or equal to 3.7 multiplied by titanium metal.
In the step S8, in the process of cooling to the temperature below 0 ℃, cooling to the temperature of 0 ℃ at the cooling speed of 70-85 ℃/h, and in the step S9, machining comprises wire saw cutting, numerical control milling and grinding.
The diamond is selected from screened artificial diamond-polycrystalline diamond, and the polycrystalline diamond is a composite material formed by sintering artificial diamond micropowder with a small amount of binding agent under high temperature and high pressure conditions, and has the characteristics of high hardness, good wear resistance, high heat conductivity, high work efficiency, long service life and good processing quality.
In the step S3, the obtained diamond micro powder particles are put into a silver crucible, naOH is added for uniform mixing, then the mixture is heated to 600 ℃ until the solution is pink, then the mixture is cooled to room temperature, and the mixture is washed to be neutral by distilled water and then is placed into a vacuum drying oven for drying.
In the step S4, the mixer adopts a wet ball milling mode to mix materials, and ZrO is used during mixing 2 The balls are ball milling media, the ball material ratio is 8:1, and during mixing, absolute ethyl alcohol is added as a dispersing agent to carry out mixing, the mixing speed is 400r/min, and the time is 3h.
In the step S6, the proportioned diamond mixture powder is pressed, and the following points need to be noted:
(1) Before pressing, cleaning a pressing machine top hammer, and keeping the surface finish of the pressing machine top hammer to avoid foreign matters;
(2) When in pressing, the material cannot enter the range of the safety baffle of the pressing machine so as not to harm the body of an operator.
The diamond adopts mixed granularity, reduces the size of a gap through stacking density, and further improves the density of the wear-resisting block.
Example 3
The preparation method of the high-toughness high-hardness wear-resistant block comprises the following steps:
s1, placing diamond in a container, then pouring an acetone solution, and finally placing the diamond in an ultrasonic cleaner for cleaning for 10min;
s2, drying the cleaned diamond for 48 hours in a room temperature environment;
s3, crushing the dried diamond into fragments with the diameter smaller than 3cm by a crusher, and grinding the fragments into powder by a grinder to obtain diamond micro powder, wherein the average diameter of diamond micro powder particles is 10 mu m;
s4, crushing materials such as titanium metal, chromium metal, molybdenum metal, vanadium metal, copper metal, cerium metal, neodymium metal, tungsten metal, sulfur, promethium metal and the like into powder with the granularity of more than 200 meshes, adding the powder into diamond powder according to a proportion, and mixing all the materials with diamond micro powder through a mixer;
the mixing machine can fully mix various materials with the diamond micro powder, so that the particle distribution of the various materials is more uniform, the uniformity of the materials is improved, the diamond is a material with extremely high hardness, and the hardness and the strength of the mixed materials can be improved by adding the diamond micro powder, so that the mixed materials have better wear resistance and corrosion resistance.
The diamond not only has excellent heat conduction performance, but also has extremely high hardness and wear resistance, and the heat conduction performance of the mixed material can be improved by adding the diamond micro powder, so that the mixed material is suitable for high temperature and high pressure, and the wear resistance of the mixed material can be improved by adding the diamond micro powder, and the service life of the material can be prolonged.
The performance of the material can be adjusted by mixing different materials with the diamond micro powder, so that the material has multiple functions, such as wear resistance, heat conduction, corrosion resistance and the like, and the requirements of different fields are met, so that the uniformity, strength, hardness, heat conduction and wear resistance of the material can be improved by mixing various metal powders with the diamond micro powder, and the versatility of the material is increased.
S5, adding borax, potassium borofluoride, cobalt tungstate, carbonyl chloride, molybdenum metal oxide, nickel oxide and tungsten oxide in proportion while mixing materials;
the additive such as borax, potassium borofluoride and the like has good wear resistance, can increase the wear resistance of the mixed material, has good corrosion resistance, can increase the corrosion resistance of the mixed material, ensures that the mixed material has better stability in corrosive media such as acid and alkali, has high hardness and high strength, can increase the hardness and strength of the mixed material, improves the durability and service life, and has good heat conductivity and can increase the heat conductivity of the mixed material.
By adding different additives, the properties of the mixed material can be regulated, so that the mixed material has multiple functions, such as wear resistance, corrosion resistance, high hardness, high strength, high thermal conductivity and the like, and meets the requirements.
S6, pressing the proportioned diamond mixture powder to form a square preform, wherein the powder is pressed by a press in a hydraulic manner, the pressure of the hydraulic press is 40-120 MPa, and the pressure maintaining time is 350-500 seconds;
s7, performing secondary isostatic cool pressing on the square preform to obtain a pressed compact, wherein the pressure of the cold isostatic press is 170-250 MPa, the dwell time is 3-10 minutes, and then performing pressure sintering on the pressed compact to obtain a hard diamond abrasion-resistant block;
s8, heating the diamond abrasion-resistant block to 1300-1600 ℃ and preserving heat for 20-30 min, air-cooling to room temperature, then heating to 750-790 ℃, preserving heat for 30-120 min, then heating to 900-1100 ℃, preserving heat for 60-120 min, heating up to 120-0 ℃/h, cooling to 300-350 ℃ after cooling to the surface temperature by water, putting the diamond abrasion-resistant block into a quenching oil medium at 30-45 ℃ and cooling to 155-165 ℃, cooling to 50-60 ℃, finally heating to 550-650 ℃, preserving heat for 60-90 min, cooling to room temperature, then heating to 200-250 ℃ again, preserving heat for 60-90 min, and cooling to room temperature;
s9, machining the diamond wear-resistant block to obtain the wear-resistant block with the specific shape.
The diamond comprises the following chemical components in percentage by weight: titanium metal: 0.9% of chromium metal: 1.35 percent of molybdenum metal: 0.18%, vanadium metal: 0.2%, copper metal: 0.18%, cerium metal: 0.22%, neodymium metal: 0.03%, tungsten: 0.38%, S:0.1%, promethium metal: 0.02%, borax: 3%, potassium borohydride: 0.9 percent of cobalt tungstate: 1.5% of phosgene: 2.3% of molybdenum metal oxide: 1%, nickel oxide: 1.3% of tungsten oxide: 0.8% of diamond and the balance of unavoidable impurities.
The weight percentages of the chromium metal, the tungsten metal, the molybdenum metal and the titanium metal meet the following relational expression: chromium metal, tungsten and molybdenum metal are more than or equal to 3.7 multiplied by titanium metal.
In the step S8, in the process of cooling to the temperature below 0 ℃, cooling to the temperature of 0 ℃ at the cooling speed of 70-85 ℃/h, and in the step S9, machining comprises wire saw cutting, numerical control milling and grinding.
The diamond is selected from screened artificial diamond-polycrystalline diamond, and the polycrystalline diamond is a composite material formed by sintering artificial diamond micropowder with a small amount of binding agent under high temperature and high pressure conditions, and has the characteristics of high hardness, good wear resistance, high heat conductivity, high work efficiency, long service life and good processing quality.
In the step S3, the obtained diamond micro powder particles are put into a silver crucible, naOH is added for uniform mixing, then the mixture is heated to 600 ℃ until the solution is pink, then the mixture is cooled to room temperature, and the mixture is washed to be neutral by distilled water and then is placed into a vacuum drying oven for drying.
In the step S4, the mixer adopts a wet ball milling mode to mix materials, and ZrO is used during mixing 2 The balls are ball milling media, the ball material ratio is 8:1, and during mixing, absolute ethyl alcohol is added as a dispersing agent to carry out mixing, the mixing speed is 400r/min, and the time is 3h.
In the step S6, the proportioned diamond mixture powder is pressed, and the following points need to be noted:
(1) Before pressing, cleaning a pressing machine top hammer, and keeping the surface finish of the pressing machine top hammer to avoid foreign matters;
(2) When in pressing, the material cannot enter the range of the safety baffle of the pressing machine so as not to harm the body of an operator.
The diamond adopts mixed granularity, reduces the size of a gap through stacking density, and further improves the density of the wear-resisting block.
The proportion of diamond in the wear-resistant block is reduced, rare earth element materials such as neodymium metal, molybdenum metal, promethium metal and the like are added, so that the wettability of the diamond can be improved, the bonding capability of the diamond is enhanced, and the addition of the rare earth element can improve the bending strength, the wear resistance, the impact toughness and the like of the matrix material, so that the quality of the diamond wear-resistant block is improved; the rare earth element can reduce the melting point of the bonding metal and the sintering temperature of the diamond abrasion-resistant block, so that the quality degradation of the diamond caused by the high temperature of a hot pressing method is reduced; and borax, potassium borofluoride, cobalt tungstate, carbonyl chloride, molybdenum metal oxide, nickel oxide, tungsten oxide and the like can be used as soldering flux to assist the fusion of diamond and other materials, and the materials can also play a role in assisting in brazing, so that the diamond is more stable in brazing, wherein the borax can form a liquid film on the surface of the wear-resistant block to prevent the liquid film from being oxidized.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.
Claims (9)
1. The preparation method of the high-toughness high-hardness wear-resistant block is characterized by comprising the following steps of:
s1, placing diamond in a container, then pouring an acetone solution, and finally placing the diamond in an ultrasonic cleaner for cleaning for 10min;
s2, drying the cleaned diamond for 48 hours in a room temperature environment;
s3, crushing the dried diamond into fragments with the diameter smaller than 3cm by a crusher, and grinding the fragments into powder by a grinder to obtain diamond micro powder, wherein the average diameter of diamond micro powder particles is 10 mu m;
s4, crushing materials such as titanium metal, chromium metal, molybdenum metal, vanadium metal, copper metal, cerium metal, neodymium metal, tungsten metal, sulfur, promethium metal and the like into powder with the granularity of more than 200 meshes, adding the powder into diamond powder according to a proportion, and mixing all the materials with diamond micro powder through a mixer;
s5, adding borax, potassium borofluoride, cobalt tungstate, carbonyl chloride, molybdenum metal oxide, nickel oxide and tungsten oxide in proportion while mixing materials;
s6, pressing the proportioned diamond mixture powder to form a square preform, wherein the powder is pressed by a press in a hydraulic manner, the pressure of the hydraulic press is 40-120 MPa, and the pressure maintaining time is 350-500 seconds;
s7, performing secondary isostatic cool pressing on the square preform to obtain a pressed compact, wherein the pressure of the cold isostatic press is 170-250 MPa, the dwell time is 3-10 minutes, and then performing pressure sintering on the pressed compact to obtain a hard diamond abrasion-resistant block;
s8, heating the diamond abrasion-resistant block to 1300-1600 ℃ and preserving heat for 20-30 min, air-cooling to room temperature, then heating to 750-790 ℃, preserving heat for 30-120 min, then heating to 900-1100 ℃, preserving heat for 60-120 min, heating up to 120-0 ℃/h, cooling to 300-350 ℃ after cooling to the surface temperature by water, putting the diamond abrasion-resistant block into a quenching oil medium at 30-45 ℃ and cooling to 155-165 ℃, cooling to 50-60 ℃, finally heating to 550-650 ℃, preserving heat for 60-90 min, cooling to room temperature, then heating to 200-250 ℃ again, preserving heat for 60-90 min, and cooling to room temperature;
s9, machining the diamond wear-resistant block to obtain the wear-resistant block with the specific shape.
2. The method for preparing the high-toughness high-hardness wear-resistant block according to claim 1, wherein the diamond comprises the following chemical components in percentage by weight: titanium metal: 0.58 to 0.9 percent of chromium metal: 1 to 1.35 percent of molybdenum metal: 0.07 to 0.18 percent of vanadium metal: 0.03 to 0.2 percent of copper metal: 0.07 to 0.18 percent of cerium metal: 0.15 to 0.22 percent of neodymium metal: 0.01 to 0.03 percent of tungsten: 0.15 to 0.38 percent, S is less than or equal to 0.03 percent, and promethium metal: 0.01 to 0.02 percent of borax: 1-3% of potassium borofluoride: 0.3 to 0.9 percent of cobalt tungstate: 0.5 to 1.5 percent of carbonyl chloride: 1 to 2.3 percent of oxide of molybdenum metal: 0.5 to 1 percent of oxide of nickel: 0.5 to 1.3 percent of tungsten oxide: 0.2 to 0.8 percent, and the balance of diamond and unavoidable impurities.
3. The method for preparing the high-toughness high-hardness wear-resistant block according to claim 2, wherein the weight percentages of chromium metal, tungsten metal, molybdenum metal and titanium metal satisfy the following relation: chromium metal, tungsten and molybdenum metal are more than or equal to 3.7 multiplied by titanium metal.
4. The method for manufacturing a high-toughness and high-hardness wear-resistant block according to claim 1, wherein in the step S8, the temperature is reduced to the room temperature of 0 ℃ at a temperature reduction rate of 70-85 ℃/h in the process of reducing the temperature to the room temperature of less than 0 ℃, and in the step S9, the machining comprises wire saw cutting, numerical control milling and grinding.
5. The method for preparing the high-toughness high-hardness wear-resistant block according to claim 1, wherein the diamond is selected from the group consisting of screened artificial diamond and polycrystalline diamond, and the polycrystalline diamond is a composite material formed by sintering artificial diamond micropowder with a small amount of binding agent under high temperature and high pressure conditions, and has the characteristics of high hardness, good wear resistance, high heat conductivity, high work efficiency, long service life and good processing quality.
6. The method for preparing the high-toughness high-hardness wear-resistant block according to claim 1, wherein in the step S3, the obtained diamond micro powder particles are put into a silver crucible, then NaOH is added for uniform mixing, then the mixture is heated to 600 ℃ until the solution becomes pink, then cooled to room temperature, washed to be neutral by distilled water, and then placed into a vacuum drying oven for drying.
7. The method for preparing high-toughness and high-hardness wear-resistant block according to claim 1, wherein in step S4, the mixer mixes by wet ball milling, and ZrO is used during mixing 2 Ball is ball milling medium, ball-material ratio is 8:1, and during mixing, absolute ethyl alcohol is added as dispersing agent to mix, and mixing is carried outThe speed was 400r/min and the time was 3h.
8. The method for preparing the high-toughness high-hardness wear-resistant block according to claim 1, wherein in the step S6, the proportioned diamond mixture powder is pressed, and the following points are needed to be noted:
(1) Before pressing, cleaning a pressing machine top hammer, and keeping the surface finish of the pressing machine top hammer to avoid foreign matters;
(2) When in pressing, the material cannot enter the range of the safety baffle of the pressing machine so as not to harm the body of an operator.
9. The method for producing a high-toughness high-hardness wear-resistant block according to claim 1, wherein the diamond has a mixed grain size, and the void size is reduced by bulk density to thereby increase the density of the wear-resistant block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311338218.3A CN117403089A (en) | 2023-10-17 | 2023-10-17 | Preparation method of high-toughness high-hardness wear-resistant block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311338218.3A CN117403089A (en) | 2023-10-17 | 2023-10-17 | Preparation method of high-toughness high-hardness wear-resistant block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117403089A true CN117403089A (en) | 2024-01-16 |
Family
ID=89499291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311338218.3A Pending CN117403089A (en) | 2023-10-17 | 2023-10-17 | Preparation method of high-toughness high-hardness wear-resistant block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117403089A (en) |
-
2023
- 2023-10-17 CN CN202311338218.3A patent/CN117403089A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5826159A (en) | Process for retarding spontaneous combustion of powdery mixtures | |
| CN103231064B (en) | Manufacturing method for novel nickel base solder brazing monolayer diamond grinding wheel | |
| CN104646852B (en) | Pricker applies cream and its application | |
| CN106985085A (en) | A kind of metal anchoring agent diamond wheel | |
| JP4541969B2 (en) | Aluminum powder alloy composite material for neutron absorption, method for manufacturing the same, and basket manufactured therewith | |
| CN111168591A (en) | Diamond grinding tool and preparation method thereof | |
| CN108655524B (en) | Method for low-temperature brazing of cubic boron nitride abrasive particles | |
| CN106976023B (en) | A kind of method of induction heating high-entropy alloy Furnace Brazing of Diamond Grinding Wheel With Ni | |
| CN105618883A (en) | Manufacturing method for vacuum-brazed monolayer cBN (cubic Boron Nitride) grinding wheel | |
| CN103395009A (en) | Ceramic hollow sphere multi-layer brazed diamond block and manufacturing method thereof | |
| CN114670128B (en) | Nanoscale high-temperature sintered ceramic abrasive and preparation method thereof | |
| CN109576546A (en) | A kind of preparation method of the high-strength tenacity without magnetic Ti (C, N) based ceramic metal | |
| CN109702188B (en) | Copper-based pre-alloyed powder additive for diamond tool and preparation method thereof | |
| CN106756168B (en) | The method that one kind prepares Ti (C, N) based ceramic metal based on carbon thermal reduction molybdenum trioxide | |
| CN109332717B (en) | Preparation method of spherical molybdenum titanium zirconium alloy powder | |
| CN113894711A (en) | Diamond grinding wheel for grinding automobile glass and preparation method thereof | |
| CN110509192B (en) | Metal glass bonding agent and preparation method thereof, grinding wheel and preparation method and application thereof | |
| CN112756613A (en) | Grinding wheel for high-strength and high-hardness ceramic processing and preparation method thereof | |
| JPH0564691B2 (en) | ||
| CN117403089A (en) | Preparation method of high-toughness high-hardness wear-resistant block | |
| CN105734388A (en) | Boride-based high-entropy alloy ceramic bond special for polycrystalline cubic boron nitride (PCBN) | |
| CN114182127A (en) | High-performance in-situ reinforced titanium-based composite material and preparation process thereof | |
| CN115070042A (en) | Rare earth oxide modified hard alloy turning tool blade and preparation method thereof | |
| CN110394738B (en) | Special grinding tool suitable for grinding ceramic material revolving body part and manufacturing process thereof | |
| CN114683182B (en) | Metal bond, metal bond diamond grinding wheel and manufacturing method thereof |
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 |