CN116694974B - Method for enhancing wear resistance of coring bit - Google Patents
Method for enhancing wear resistance of coring bit Download PDFInfo
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- CN116694974B CN116694974B CN202310980342.3A CN202310980342A CN116694974B CN 116694974 B CN116694974 B CN 116694974B CN 202310980342 A CN202310980342 A CN 202310980342A CN 116694974 B CN116694974 B CN 116694974B
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000002708 enhancing effect Effects 0.000 title claims abstract description 17
- 238000000498 ball milling Methods 0.000 claims abstract description 63
- 239000003607 modifier Substances 0.000 claims abstract description 55
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 230000001105 regulatory effect Effects 0.000 claims abstract description 31
- 238000001035 drying Methods 0.000 claims abstract description 30
- 238000005406 washing Methods 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 239000011159 matrix material Substances 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 238000003723 Smelting Methods 0.000 claims abstract description 8
- 238000005245 sintering Methods 0.000 claims abstract description 8
- 239000000243 solution Substances 0.000 claims description 70
- 238000003756 stirring Methods 0.000 claims description 54
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 49
- 229910021389 graphene Inorganic materials 0.000 claims description 49
- 239000007864 aqueous solution Substances 0.000 claims description 35
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical class [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 33
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 32
- 238000002360 preparation method Methods 0.000 claims description 29
- 239000004115 Sodium Silicate Substances 0.000 claims description 17
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 17
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 17
- 229920001661 Chitosan Polymers 0.000 claims description 16
- -1 alcohol amine Chemical class 0.000 claims description 16
- VQEHIYWBGOJJDM-UHFFFAOYSA-H lanthanum(3+);trisulfate Chemical compound [La+3].[La+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O VQEHIYWBGOJJDM-UHFFFAOYSA-H 0.000 claims description 16
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 15
- 239000001509 sodium citrate Substances 0.000 claims description 15
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 8
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 8
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000012286 potassium permanganate Substances 0.000 claims description 8
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 8
- 239000011734 sodium Substances 0.000 claims description 8
- 229910052708 sodium Inorganic materials 0.000 claims description 8
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 7
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 7
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims description 7
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 7
- 206010001497 Agitation Diseases 0.000 claims 2
- 238000013019 agitation Methods 0.000 claims 2
- 238000005260 corrosion Methods 0.000 abstract description 11
- 230000007797 corrosion Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 11
- 150000003839 salts Chemical class 0.000 abstract description 8
- 239000002253 acid Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 239000003595 mist Substances 0.000 description 3
- VJCJAQSLASCYAW-UHFFFAOYSA-N azane;dodecanoic acid Chemical compound [NH4+].CCCCCCCCCCCC([O-])=O VJCJAQSLASCYAW-UHFFFAOYSA-N 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920005552 sodium lignosulfonate Polymers 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
-
- 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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
- C22C1/1047—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Composite Materials (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a method for enhancing wear resistance of a coring bit, which comprises the following steps: step one: preparing a carcass powder raw material; step two: the raw materials are sent into a smelting machine to be smelted completely, and then sent into a mould to be cooled and shaped, so as to obtain a drill bit primary body; step three: preheating the drill bit primary body, then heating to 210-220 ℃, and preserving heat; step four: cooling to 40-45deg.C, performing ultrasonic treatment in heat regulating solution, washing with water, and drying; step five: adding a ball milling modifier for ball milling, and after ball milling, washing and drying; sintering at 650-750deg.C. The method adopts matrix powder raw materials as a base material formula, improves the heat treatment by preheating, optimizes the activity efficiency, and improves the wear resistance effect, acid corrosion resistance and salt corrosion resistance stability of the product by carrying out ultrasonic treatment in a heat regulating liquid and ball milling treatment by matching with a ball milling modifier and carrying out coordinated improvement.
Description
Technical Field
The invention relates to the technical field of drill bits, in particular to a method for enhancing wear resistance of a coring drill bit.
Background
Different types of rock are drilled, and a specific drill bit is needed to achieve good drilling effect. The serialization of the drill bit also requires the diversification of the performances of drill bit matrix, and the matrix with different wear resistances can be selected for rock strata with different grindabilities. The properties of the bit matrix include wear resistance, erosion resistance, impact toughness, hardness, flexural strength, coefficient of linear expansion, density, and the like.
The existing bit matrix powder material has the disadvantages of simple raw materials, poor wear resistance of the prepared bit, simple bit process, limitation of improvement of wear resistance, and poor performance stability of the product under the conditions of acid corrosion and salt corrosion, and needs further improvement based on the product.
Disclosure of Invention
In view of the drawbacks of the prior art, an object of the present invention is to provide a method for enhancing wear resistance of a coring bit, so as to solve the problems set forth in the background art.
The invention solves the technical problems by adopting the following technical scheme:
a method of enhancing wear resistance of a coring bit, comprising the steps of:
step one: preparing a core bit matrix powder raw material, wherein the core bit matrix powder comprises 35-40 parts of tungsten carbide, 15-20 parts of copper alloy and 5-10 parts of aluminum nitride;
step two: the raw materials are sent into a smelting machine to be smelted completely, and then sent into a mould to be cooled and shaped, so as to obtain a drill bit primary body;
step three: preheating the drill bit primary body to 105-110 ℃, preheating for 5-10min, then heating to 210-220 ℃ at a speed of 1-3 ℃/min, and preserving heat for 10-20min;
step four: then cooling to 40-45 ℃ at the speed of 2-5 ℃/min, then carrying out ultrasonic treatment in a heat regulating liquid, ending ultrasonic treatment, washing with water and drying;
step five: adding a ball milling modifier accounting for 10-20% of the total amount of the product in the step four into the product in the step four, ball milling for 1000-1500r/min, ball milling for 1-2h, water washing and drying after ball milling is finished; sintering at 650-750deg.C for 1-2 h;
the preparation method of the thermal regulating liquid comprises the following steps:
s11: adding graphene into a chitosan water solution according to a weight ratio of 1:5, then adding sodium dodecyl sulfate accounting for 5-10% of the total amount of the graphene, a silane coupling agent KH560 accounting for 2-5% of the total amount of the graphene and a lanthanum sulfate solution accounting for 2-5% of the total amount of the graphene, and uniformly stirring to obtain a graphene solution;
s12: uniformly dispersing silicon carbide whiskers in a potassium permanganate solution with the mass fraction of 5% which is 5-10 times of the total amount of the silicon carbide whiskers, and then washing and drying to obtain pretreated silicon carbide whiskers;
s13: heat-treating pretreated silicon carbide whisker at 100-110 ℃ for 10-20min, cooling to 45 ℃ at a speed of 1-3 ℃/min, adding modifier according to a weight ratio of 4:1, ball-milling for 1-2h at a rotating speed of 1000-1500r/min, washing with water, and drying to obtain ball abrasive;
s14: then adding the ball abrasive into the graphene liquid according to the weight ratio of 1:5, and stirring to obtain the thermal regulating liquid after stirring.
Preferably, the ultrasonic treatment time is 20-30min, and the ultrasonic power is 350-450W.
Preferably, the lanthanum sulfate solution has a mass fraction of 2-5%; the mass fraction of the chitosan aqueous solution is 4-6%.
Preferably, the rotation speed of the stirring treatment of the S13 is 600-1000r/min, and the stirring time is 1-2h.
Preferably, the preparation method of the modifier in S13 is as follows:
adding 10-15 parts of sodium lignin sulfonate into 30-40 parts of hydrochloric acid solution, adding 2-5 parts of organic alcohol amine and 1-3 parts of sodium silicate aqueous solution, stirring and mixing uniformly, then adding 2-4 parts of sodium alkyl sulfonate, and continuing stirring and reacting fully to obtain the modifier.
Preferably, the mass fraction of the hydrochloric acid solution is 2-5%; the mass fraction of the sodium silicate aqueous solution is 10-15%.
Preferably, the preparation method of the ball milling modifier comprises the following steps:
adding the rectorite into a lanthanum nitrate solution with the mass fraction of 5% according to the weight ratio of 2:5, then adding ammonium dodecabiate with the total amount of 3-6% of the rectorite and a sodium citrate aqueous solution with the total amount of 2-5% of the rectorite, and uniformly stirring to obtain the ball milling modifier.
Preferably, the mass fraction of the sodium citrate aqueous solution is 6-8%.
Compared with the prior art, the invention has the following beneficial effects:
the method for enhancing the wear resistance of the coring bit adopts matrix powder raw materials as a base material formula, provides excellent wear resistance foundation for the product, improves heat treatment by preheating, optimizes the activity efficiency of the product, improves the performance of the product by ultrasonic treatment in a heat regulating liquid and ball milling treatment by matching with a ball milling modifier, and improves the wear resistance effect and the stability of acid corrosion resistance and salt corrosion resistance of the product by coordination improvement.
The thermal regulating solution adopts graphene to mutually coordinate and coordinate through chitosan solution, sodium dodecyl sulfate, silane coupling agent KH560 and lanthanum sulfate solution, the silane coupling agent KH560 improves the interfacial property between raw materials, and the lanthanum sulfate solution is matched with the chitosan solution to synergistically improve the activity energy and compatibility of a system, so that the thermal regulating solution is convenient for carrying out interface optimization treatment on the primary body of the drill bit matched with thermal improvement, the silicon carbide whisker has a whisker structure, the activity energy of the silicon carbide whisker is improved through potassium permanganate solution treatment, and then the silicon carbide whisker is subjected to modification treatment by a modifier, and the silicon carbide whisker is subjected to blending treatment between sodium lignosulfonate, hydrochloric acid solution, organic alcohol amine and sodium silicate aqueous solution in the modifier and sodium alkyl sulfonate, so that the silicon carbide whisker is convenient for better cooperation with the graphene solution; the prepared heat regulating liquid is subjected to improved treatment, so that the wear resistance of a system can be enhanced, and meanwhile, the ball milling modifier is matched with rectorite, lanthanum nitrate solution, ammonium dodecanoate and sodium citrate aqueous solution, so that the ball milling modifier can be synergistic with the heat regulating liquid, and the acid corrosion resistance and the salt corrosion resistance stability of a product are further enhanced.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The method for enhancing the wear resistance of the coring bit comprises the following steps:
step one: preparing raw materials of matrix powder: 35-40 parts of tungsten carbide, 15-20 parts of copper alloy and 5-10 parts of aluminum nitride;
step two: the raw materials are sent into a smelting machine to be smelted completely, and then sent into a mould to be cooled and shaped, so as to obtain a drill bit primary body;
step three: preheating the drill bit primary body to 105-110 ℃, preheating for 5-10min, then heating to 210-220 ℃ at a speed of 1-3 ℃/min, and preserving heat for 10-20min;
step four: then cooling to 40-45 ℃ at the speed of 2-5 ℃/min, then carrying out ultrasonic treatment in a heat regulating liquid, ending ultrasonic treatment, washing with water and drying;
step five: adding a ball milling modifier accounting for 10-20% of the total amount of the product in the step four into the product in the step four, ball milling for 1000-1500r/min, ball milling for 1-2h, water washing and drying after ball milling is finished; sintering at 650-750deg.C for 1-2h.
The ultrasonic treatment time of the embodiment is 20-30min, and the ultrasonic power is 350-450W.
The preparation method of the heat regulating liquid in the embodiment comprises the following steps:
s11: adding graphene into a chitosan water solution according to a weight ratio of 1:5, then adding sodium dodecyl sulfate accounting for 5-10% of the total amount of the graphene, a silane coupling agent KH560 accounting for 2-5% of the total amount of the graphene and a lanthanum sulfate solution accounting for 2-5% of the total amount of the graphene, and uniformly stirring to obtain a graphene solution;
s12: uniformly dispersing silicon carbide whiskers in a potassium permanganate solution with the mass fraction of 5% which is 5-10 times of the total amount of the silicon carbide whiskers, and then washing and drying to obtain pretreated silicon carbide whiskers;
s13: heat-treating pretreated silicon carbide whisker at 100-110 ℃ for 10-20min, cooling to 45 ℃ at a speed of 1-3 ℃/min, adding modifier according to a weight ratio of 4:1, ball-milling for 1-2h at a rotating speed of 1000-1500r/min, washing with water, and drying to obtain ball abrasive;
s14: then adding the ball abrasive into the graphene liquid according to the weight ratio of 1:5, and stirring to obtain the thermal regulating liquid after stirring.
The mass fraction of the lanthanum sulfate solution in the embodiment is 2-5%; the mass fraction of the chitosan aqueous solution is 4-6%.
The rotation speed of the stirring treatment of S13 in the embodiment is 600-1000r/min, and the stirring time is 1-2h.
The preparation method of the modifier in the embodiment comprises the following steps:
adding 10-15 parts of sodium lignin sulfonate into 30-40 parts of hydrochloric acid solution, adding 2-5 parts of organic alcohol amine and 1-3 parts of sodium silicate aqueous solution, stirring and mixing uniformly, then adding 2-4 parts of sodium alkyl sulfonate, and continuing stirring and reacting fully to obtain the ball grinding agent.
The mass fraction of the hydrochloric acid solution in the embodiment is 2-5%; the mass fraction of the sodium silicate aqueous solution is 10-15%.
The preparation method of the ball milling modifier comprises the following steps:
adding the rectorite into a lanthanum nitrate solution with the mass fraction of 5% according to the weight ratio of 2:5, then adding ammonium dodecabiate with the total amount of 3-6% of the rectorite and a sodium citrate aqueous solution with the total amount of 2-5% of the rectorite, and uniformly stirring to obtain the ball milling modifier.
The mass fraction of the sodium citrate aqueous solution of this example is 6-8%.
Example 1
A method of enhancing wear resistance of a coring bit of the present embodiment includes the steps of:
step one: preparing raw materials of matrix powder: 35 parts of tungsten carbide, 15 parts of copper alloy and 5 parts of aluminum nitride;
step two: the raw materials are sent into a smelting machine to be smelted completely, and then sent into a mould to be cooled and shaped, so as to obtain a drill bit primary body;
step three: preheating the drill bit primary body to 105 ℃, preheating for 5min, then heating to 210 ℃ at a speed of 1 ℃/min, and preserving heat for 10min;
step four: then cooling to 40 ℃ at the speed of 2 ℃/min, then carrying out ultrasonic treatment in a heat regulating liquid, finishing ultrasonic treatment, washing with water and drying;
step five: adding a ball milling modifier accounting for 10% of the total amount of the product in the step four into the product in the step four, ball milling for 1000r/min, ball milling for 1h, and washing and drying after ball milling; sintering at 650 deg.c for 1 hr.
The time of the ultrasonic treatment in this example was 20min, and the ultrasonic power was 350W.
The preparation method of the heat regulating liquid in the embodiment comprises the following steps:
s11: adding graphene into a chitosan water solution according to a weight ratio of 1:5, then adding sodium dodecyl sulfate accounting for 5% of the total amount of the graphene, a silane coupling agent KH560 accounting for 2% of the total amount of the graphene and a lanthanum sulfate solution accounting for 2% of the total amount of the graphene, and uniformly stirring to obtain a graphene solution;
s12: uniformly dispersing silicon carbide whiskers in a potassium permanganate solution with the mass fraction of 5% which is 5 times of the total amount of the silicon carbide whiskers, and then washing and drying to obtain pretreated silicon carbide whiskers;
s13: heat-treating pretreated silicon carbide whiskers at 100 ℃ for 10min, cooling to 45 ℃ at a speed of 1 ℃/min, adding a modifier according to a weight ratio of 4:1, ball-milling for 1h at a rotating speed of 1000r/min, washing with water, and drying to obtain a ball abrasive;
s14: then adding the ball abrasive into the graphene liquid according to the weight ratio of 1:5, and stirring to obtain the thermal regulating liquid after stirring.
The mass fraction of the lanthanum sulfate solution in the embodiment is 2%; the mass fraction of the chitosan aqueous solution is 4%.
The rotational speed of the stirring treatment in S13 of this example was 600r/min, and the stirring time was 1h.
The preparation method of the modifier in the embodiment comprises the following steps:
adding 10 parts of sodium lignin sulfonate into 30 parts of hydrochloric acid solution, adding 2 parts of organic alcohol amine and 1 part of sodium silicate aqueous solution, stirring and mixing uniformly, then adding 2 parts of sodium alkyl sulfonate, and continuing to stir and react fully to obtain the ball grinding agent.
The mass fraction of the hydrochloric acid solution in this example was 2%; the mass fraction of the sodium silicate aqueous solution is 10%.
The preparation method of the ball milling modifier comprises the following steps:
adding the rectorite into a lanthanum nitrate solution with the mass fraction of 5% according to the weight ratio of 2:5, then adding ammonium dodecabiate with the total amount of 3% of the rectorite and a sodium citrate aqueous solution with the total amount of 2% of the rectorite, and uniformly stirring to obtain the ball milling modifier.
The mass fraction of the sodium citrate aqueous solution of this example was 6%.
Example 2
A method of enhancing wear resistance of a coring bit of the present embodiment includes the steps of:
step one: preparing raw materials of matrix powder: 40 parts of tungsten carbide, 20 parts of copper alloy and 10 parts of aluminum nitride;
step two: the raw materials are sent into a smelting machine to be smelted completely, and then sent into a mould to be cooled and shaped, so as to obtain a drill bit primary body;
step three: preheating the drill bit primary body to 110 ℃, preheating for 10min, then heating to 220 ℃ at a speed of 3 ℃/min, and preserving heat for 20min;
step four: then cooling to 45 ℃ at a speed of 5 ℃/min, then carrying out ultrasonic treatment in a heat regulating liquid, finishing ultrasonic treatment, washing with water and drying;
step five: adding a ball milling modifier accounting for 20% of the total amount of the product in the step four into the product in the step four, ball milling for 1500r/min, ball milling for 2h, and washing and drying after ball milling; and sintering at 750 ℃ for 2 hours.
The time of the ultrasonic treatment in this example was 30min, and the ultrasonic power was 450W.
The preparation method of the heat regulating liquid in the embodiment comprises the following steps:
s11: adding graphene into a chitosan water solution according to a weight ratio of 1:5, then adding sodium dodecyl sulfate accounting for 10% of the total amount of the graphene, a silane coupling agent KH560 accounting for 5% of the total amount of the graphene and a lanthanum sulfate solution accounting for 5% of the total amount of the graphene, and uniformly stirring to obtain a graphene solution;
s12: uniformly dispersing silicon carbide whiskers in a potassium permanganate solution with the mass fraction of 5% which is 10 times of the total amount of the silicon carbide whiskers, and then washing and drying to obtain pretreated silicon carbide whiskers;
s13: heat-treating pretreated silicon carbide whiskers at 110 ℃ for 20min, cooling to 45 ℃ at a speed of 3 ℃/min, adding a modifier according to a weight ratio of 4:1, ball-milling for 2h at a rotating speed of 1500r/min, washing with water and drying to obtain a ball abrasive;
s14: then adding the ball abrasive into the graphene liquid according to the weight ratio of 1:5, and stirring to obtain the thermal regulating liquid after stirring.
The mass fraction of the lanthanum sulfate solution of this example was 5%; the mass fraction of the chitosan aqueous solution is 6%.
The rotational speed of the stirring treatment in S13 of this example was 1000r/min, and the stirring time was 2h.
The preparation method of the modifier in the embodiment comprises the following steps:
15 parts of sodium lignin sulfonate is added into 40 parts of hydrochloric acid solution, then 5 parts of organic alcohol amine and 3 parts of sodium silicate aqueous solution are added, stirring and mixing are uniform, then 4 parts of sodium alkyl sulfonate is added, stirring and reaction are continued and full, and the ball grinding agent is obtained.
The mass fraction of the hydrochloric acid solution in this example is 5%; the mass fraction of the sodium silicate aqueous solution is 15%.
The preparation method of the ball milling modifier comprises the following steps:
adding the rectorite into a lanthanum nitrate solution with the mass fraction of 5% according to the weight ratio of 2:5, then adding ammonium dodecabiate with the total amount of 6% of the rectorite and a sodium citrate aqueous solution with the total amount of 5% of the rectorite, and uniformly stirring to obtain the ball milling modifier.
The mass fraction of the sodium citrate aqueous solution of this example was 8%.
Example 3
A method of enhancing wear resistance of a coring bit of the present embodiment includes the steps of:
step one: preparing raw materials of matrix powder: 37 parts of tungsten carbide, 17.5 parts of copper alloy and 7.5 parts of aluminum nitride;
step two: the raw materials are sent into a smelting machine to be smelted completely, and then sent into a mould to be cooled and shaped, so as to obtain a drill bit primary body;
step three: preheating the drill bit primary body to 107 ℃ for 5-10min, then heating to 215 ℃ at a speed of 2 ℃/min, and preserving heat for 15min;
step four: then cooling to 42 ℃ at the speed of 3.5 ℃/min, then carrying out ultrasonic treatment in a heat regulating liquid, finishing ultrasonic treatment, washing with water and drying;
step five: adding a ball milling modifier accounting for 15% of the total amount of the product in the step four into the product in the step four, ball milling for 1250r/min, ball milling for 1.5h, and washing and drying after ball milling; and sintering at 700 ℃ for 1.5 hours.
The time of the ultrasonic treatment in this example was 25 minutes, and the ultrasonic power was 400W.
The preparation method of the heat regulating liquid in the embodiment comprises the following steps:
s11: adding graphene into a chitosan water solution according to a weight ratio of 1:5, then adding sodium dodecyl sulfate accounting for 7.5% of the total amount of the graphene, a silane coupling agent KH560 accounting for 3.5% of the total amount of the graphene and a lanthanum sulfate solution accounting for 3.5% of the total amount of the graphene, and uniformly stirring to obtain a graphene solution;
s12: uniformly dispersing silicon carbide whiskers in a potassium permanganate solution with the mass fraction of 5% which is 7.5 times of the total amount of the silicon carbide whiskers, and then washing and drying to obtain pretreated silicon carbide whiskers;
s13: heat-treating pretreated silicon carbide whiskers at 105 ℃ for 15min, cooling to 45 ℃ at a speed of 2 ℃/min, adding a modifier according to a weight ratio of 4:1, ball-milling for 1.5h at a rotating speed of 1250r/min, washing with water, and drying to obtain ball abrasive;
s14: then adding the ball abrasive into the graphene liquid according to the weight ratio of 1:5, and stirring to obtain the thermal regulating liquid after stirring.
The mass fraction of the lanthanum sulfate solution of this example was 3.5%; the mass fraction of the chitosan aqueous solution is 5%.
The rotational speed of the stirring treatment in S13 of this example was 800r/min, and the stirring time was 1.5h.
The preparation method of the modifier in the embodiment comprises the following steps:
adding 12 parts of sodium lignin sulfonate into 35 parts of hydrochloric acid solution, adding 3.5 parts of organic alcohol amine and 2 parts of sodium silicate aqueous solution, stirring and mixing uniformly, then adding 3 parts of sodium alkyl sulfonate, and continuing to stir and react fully to obtain the ball grinding agent.
The mass fraction of the hydrochloric acid solution of this example was 3.5%; the mass fraction of the sodium silicate aqueous solution is 12.5%.
The preparation method of the ball milling modifier comprises the following steps:
adding the rectorite into a lanthanum nitrate solution with the mass fraction of 5% according to the weight ratio of 2:5, then adding ammonium dodecabiate with the total amount of 3-6% of the rectorite and a sodium citrate aqueous solution with the total amount of Dan Zongliang 3.5.5% of the rectorite, and uniformly stirring to obtain the ball milling modifier.
The mass fraction of the aqueous sodium citrate solution of this example was 7%.
Example 4
A method of enhancing wear resistance of a coring bit of the present embodiment includes the steps of:
step one: preparing raw materials of matrix powder: 37 parts of tungsten carbide, 16 parts of copper alloy and 6 parts of aluminum nitride;
step two: the raw materials are sent into a smelting machine to be smelted completely, and then sent into a mould to be cooled and shaped, so as to obtain a drill bit primary body;
step three: preheating the drill bit primary body to 106 ℃, preheating for 6min, then heating to 212 ℃ at a speed of 2 ℃/min, and preserving heat for 12min;
step four: then cooling to 42 ℃ at a speed of 3 ℃/min, then carrying out ultrasonic treatment in a heat regulating liquid, finishing ultrasonic treatment, washing with water, and drying;
step five: adding a ball milling modifier accounting for 12% of the total amount of the product in the fourth step into the product in the fourth step, performing ball milling for 1200r/min, performing ball milling for 1.2h, performing water washing and drying after the ball milling is finished; sintering at 670 deg.c for 1.2 hr.
The time of the ultrasonic treatment in this example was 22min, and the ultrasonic power was 400W.
The preparation method of the heat regulating liquid in the embodiment comprises the following steps:
s11: adding graphene into a chitosan water solution according to a weight ratio of 1:5, then adding sodium dodecyl sulfate accounting for 6% of the total amount of the graphene, a silane coupling agent KH560 accounting for 3% of the total amount of the graphene and a lanthanum sulfate solution accounting for 3% of the total amount of the graphene, and uniformly stirring to obtain a graphene solution;
s12: uniformly dispersing silicon carbide whiskers in a potassium permanganate solution with the mass fraction of 5% and 6 times of the total amount of the silicon carbide whiskers, and then washing and drying to obtain pretreated silicon carbide whiskers;
s13: heat-treating pretreated silicon carbide whiskers at 102 ℃ for 12min, cooling to 45 ℃ at a speed of 2 ℃/min, adding a modifier according to a weight ratio of 4:1, ball-milling for 1.2h at a rotating speed of 1200r/min, washing with water, and drying to obtain ball abrasive;
s14: then adding the ball abrasive into the graphene liquid according to the weight ratio of 1:5, and stirring to obtain the thermal regulating liquid after stirring.
The mass fraction of the lanthanum sulfate solution of this example was 3%; the mass fraction of the chitosan aqueous solution is 5%.
The rotational speed of the stirring treatment in S13 of this example was 700r/min, and the stirring time was 1.2h.
The preparation method of the modifier in the embodiment comprises the following steps:
adding 12 parts of sodium lignin sulfonate into 32 parts of hydrochloric acid solution, adding 3 parts of organic alcohol amine and 2 parts of sodium silicate aqueous solution, stirring and mixing uniformly, then adding 3 parts of sodium alkyl sulfonate, and continuing to stir and react fully to obtain the ball grinding agent.
The mass fraction of the hydrochloric acid solution of this example was 3%; the mass fraction of the sodium silicate aqueous solution is 12%.
The preparation method of the ball milling modifier comprises the following steps:
adding the rectorite into a lanthanum nitrate solution with the mass fraction of 5% according to the weight ratio of 2:5, then adding ammonium dodecabiate with the total amount of 4% of the rectorite and a sodium citrate aqueous solution with the total amount of 3% of the rectorite, and uniformly stirring to obtain the ball milling modifier.
The mass fraction of the aqueous sodium citrate solution of this example was 7%.
Comparative example 1
The difference from example 3 is that no heat-regulating liquid treatment was added.
Comparative example 2
The difference from example 3 is that no modifier treatment was used in the preparation of the heat-regulating liquid.
Comparative example 3
The difference from example 3 is that no aqueous sodium silicate solution was added in the preparation of the modifier.
Comparative example 4
The difference from example 3 is that the graphene liquid in the preparation of the thermal regulating liquid is prepared from graphene and deionized water according to a weight ratio of 1:5.
Comparative example 5
The difference from example 3 is that no ball milling modifier treatment was used.
Comparative example 6
Unlike example 3, no ammonium dodecanoate was added to the preparation of the ball mill modifier.
The products of examples 1 to 4 and comparative examples 1 to 6 were subjected to performance test, placed under 2% hydrochloric acid mist conditions for 12 hours, and placed under 2% salt mist conditions for 12 hours, and the acid corrosion resistance and salt mist resistance were respectively tested, with the following test results.
As can be seen from comparative examples 1 to 6 and examples 1 to 4;
the product of the embodiment 3 has excellent wear resistance, acid corrosion resistance and salt spray resistance, and can be improved in a coordinated manner, and the product has excellent performance stability under the conditions of acid corrosion resistance and salt spray resistance;
from comparative examples 1-6 and example 3, the invention does not add thermal conditioning fluid treatment and does not adopt ball milling modifier treatment, the performance of the product is obviously degraded, the two are coordinated and synergistically enhanced, and the performance effect of the product is obvious;
the preparation of the thermal regulating liquid is not treated by a modifier, a sodium silicate aqueous solution is not added in the preparation of the modifier, the graphene liquid in the preparation of the thermal regulating liquid is prepared by graphene and deionized water according to a weight ratio of 1:5, and the performance of the product tends to be poor;
only the modifier of the invention is matched with the graphene liquid of the invention and other specific processes of the invention, the performance effect of the product is most remarkable, and the performance effect of the product replaced by other methods is less obvious than that of the invention;
meanwhile, the ball milling modifier prepared by the other methods is not added with ammonium dodecadiacid in the preparation of the ball milling modifier, the performance of the product also tends to be poor, and only the ball milling modifier prepared by the specific method has the most obvious performance effect.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. A method of enhancing wear resistance of a coring bit, comprising the steps of:
step one: preparing a core bit matrix powder raw material, wherein the core bit matrix powder comprises 35-40 parts of tungsten carbide, 15-20 parts of copper alloy and 5-10 parts of aluminum nitride;
step two: the raw materials are sent into a smelting machine to be smelted completely, and then sent into a mould to be cooled and shaped, so as to obtain a drill bit primary body;
step three: preheating the drill bit primary body to 105-110 ℃, preheating for 5-10min, then heating to 210-220 ℃ at a speed of 1-3 ℃/min, and preserving heat for 10-20min;
step four: then cooling to 40-45 ℃ at the speed of 2-5 ℃/min, then carrying out ultrasonic treatment in a heat regulating liquid, ending ultrasonic treatment, washing with water and drying;
step five: adding a ball milling modifier accounting for 10-20% of the total amount of the product in the step four into the product in the step four, ball milling for 1000-1500r/min, ball milling for 1-2h, water washing and drying after ball milling is finished; sintering at 650-750deg.C for 1-2 h;
the preparation method of the thermal regulating liquid comprises the following steps:
s11: adding graphene into a chitosan water solution according to a weight ratio of 1:5, then adding sodium dodecyl sulfate accounting for 5-10% of the total amount of the graphene, a silane coupling agent KH560 accounting for 2-5% of the total amount of the graphene and a lanthanum sulfate solution accounting for 2-5% of the total amount of the graphene, and uniformly stirring to obtain a graphene solution;
s12: uniformly dispersing silicon carbide whiskers in a potassium permanganate solution with the mass fraction of 5% which is 5-10 times of the total amount of the silicon carbide whiskers, and then washing and drying to obtain pretreated silicon carbide whiskers;
s13: heat-treating pretreated silicon carbide whisker at 100-110 ℃ for 10-20min, cooling to 45 ℃ at a speed of 1-3 ℃/min, adding modifier according to a weight ratio of 4:1, ball-milling for 1-2h at a rotating speed of 1000-1500r/min, washing with water, and drying to obtain ball abrasive;
s14: then adding the ball abrasive into the graphene liquid according to the weight ratio of 1:5, and stirring to obtain a thermal regulating liquid after stirring;
the preparation method of the modifier in S13 comprises the following steps:
adding 10-15 parts of sodium lignin sulfonate into 30-40 parts of hydrochloric acid solution, adding 2-5 parts of organic alcohol amine and 1-3 parts of sodium silicate aqueous solution, stirring and mixing uniformly, then adding 2-4 parts of sodium alkyl sulfonate, and continuing stirring and reacting fully to obtain a modifier;
the preparation method of the ball milling modifier comprises the following steps:
adding the rectorite into a lanthanum nitrate solution with the mass fraction of 5% according to the weight ratio of 2:5, then adding ammonium dodecabiate with the total amount of 3-6% of the rectorite and a sodium citrate aqueous solution with the total amount of 2-5% of the rectorite, and uniformly stirring to obtain the ball milling modifier.
2. The method of enhancing the wear resistance of a coring bit of claim 1, wherein said sonicating is for a period of 20-30 minutes and the ultrasonic power is 350-450W.
3. The method of enhancing the wear resistance of a coring bit of claim 1, wherein said lanthanum sulfate solution has a mass fraction of 2-5%; the mass fraction of the chitosan aqueous solution is 4-6%.
4. The method for enhancing the wear resistance of a coring bit according to claim 1, wherein the rotational speed of the S13 agitation treatment is 600-1000r/min and the agitation time is 1-2h.
5. The method of enhancing the wear resistance of a coring bit of claim 1, wherein the mass fraction of the hydrochloric acid solution is 2-5%; the mass fraction of the sodium silicate aqueous solution is 10-15%.
6. The method of claim 1, wherein the aqueous sodium citrate solution has a mass fraction of 6-8%.
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