53 results about "Ceramic knife" patented technology

The invention discloses a three-dimensional graphene-carbon fiber network and double-phase high-entropy alloy synergistic strengthening and toughening ceramic cutter material as well as a preparation method and application thereof. The material is prepared from the following components in parts by mass: 87.8 to 90.9 parts of aluminum oxide, 8 to 10 parts of AlCoCrFeNi five-element equal-atomic-ratio high-entropy alloy, 1 to 2 parts of carbon fiber and 0.1 to 0.2 part of graphene. The preparation method comprises the steps of preparation of graphene grafted carbon fibers, preparation of AlCoCrFeNi high-entropy alloy powder, preparation of aluminum oxide-high-entropy alloy-graphene grafted carbon fiber composite ceramic powder and spark plasma sintering. The ceramic cutting tool material is used for preparing high-speed cutting tools. According to the preparation method, a plastic toughening mechanism of a double-phase high-entropy alloy is organically combined with a multi-stage toughening effect of a three-dimensional graphene-carbon fiber network, and a composite ceramic material with high hardness and high fracture toughness is obtained through spark plasma sintering, so that the adaptability of a cutter under a high-speed cutting condition is remarkably improved, and the service life of the cutter under the high-speed cutting condition is remarkably prolonged.

The invention relates to the technical field of preparation of ceramic cutters for electrical porcelain fettling, and discloses a preparation method of a precisely formed ceramic cutter for electrical porcelain fettling, the method comprises the following steps: weighing raw materials according to mass percentage, the raw materials comprising Al2O3, clay, CaCO3, an additive 1 and an additive 2; mixing the weighed raw materials, deionized water and ballstone according to a specific mass ratio, and putting the mixture into a ball milling tank for full ball milling to obtain ceramic slurry; slowly injecting the prepared ceramic slurry into a mold, standing, demolding, drying a demolded cutter blank in the shade at a specific temperature, and polishing, modifying and removing burrs after drying in the shade to obtain a to-be-sintered blank; and putting the obtained to-be-sintered blank into a box-type furnace, heating to a sintering temperature according to a specific heating rate, carrying out heat preservation, then cooling according to a segmented cooling rate, and finally, carrying out furnace cooling to obtain the precisely-formed electric porcelain fettling ceramic cutter. According to the invention, the fluidity of the Al2O3-based ceramic slurry and the mechanical property of the cutter are improved, and the precise forming effect of the electroceramic fettling cutter with a complex structure is met.

The application discloses a device for preparing a textured ceramic cutter and belongs to the technical field of ceramic cutting tools. The device is characterized in that a ceramic core rod is placed in a circular table cavity, long strip beta-silicon nitride whiskers are added into ceramic slurry of the ceramic core rod, the ceramic slurry slowly flows into the circular table cavity under the action of gravity, the circular table cavity slowly rotates and slowly moves away from the ceramic core rod, the movement of the circular table cavity relative to the ceramic core rod is oblique movement, the ceramic core rod slowly covers the surface slurry under the action of the oblique speed of the circular table cavity, and the long strip beta-silicon nitride whiskers mostly present the same movement direction under the movement, so that the effect of texturing the outer structure of the ceramic cutter is achieved.

The application relates to the technical field of ceramic cutter production, and particularly discloses a high-strength ceramic cutter production process, which comprises the following steps: S1, whisker directional pretreatment; S2, ceramic base body mixing; S3, binder preparation: polyvinyl butyral is dissolved in anhydrous ethanol to form a solution, titanium ester coupling agent NDZ-201 is added, constant-temperature stirring is carried out until the solution is transparent and uniform, and a composite binder is obtained; S4, freeze-drying granulation: mixed powder and the composite binder are mixed, anhydrous ethanol is added, slurry is formed after stirring, the slurry is injected into a mold, freezing is carried out, drying is carried out in a freeze dryer, and the granulation powder is obtained by crushing and sieving; S5, gradient hot-pressing sintering: the granulation powder is loaded into a graphite mold and sintered in a vacuum hot-pressing furnace; and S6, laser surface strengthening: the sintered body is placed on a pulse laser processing platform, and a laser is used to perform laser cladding treatment on the cutter edge area.

The invention discloses a kitchen storage knife rest and a kitchen knife set. The kitchen storage knife rest comprises a knife rest body and a clamping piece. The tool rest body is provided with a tool bit inserting groove and a guide containing groove, the tool bit inserting groove penetrates through the tool rest body in the height direction of the tool rest body, and the guide containing groove communicates with the tool bit inserting groove. The clamping piece is arranged in the guide containing groove in a sliding mode. When the tool bit of the tool is located in the tool bit inserting groove, the clamping piece and the groove wall of the tool bit inserting groove jointly clamp the tool bit of the tool under the action of gravity. Due to the fact that a clamping mechanism does not depend on magnetic adsorption, but depends on mechanical contact and gravity compression, the kitchen storage knife rest can be compatible with knives made of various materials, including knives made of non-ferromagnetic or weak magnetic materials such as ceramic knives, titanium alloy knives and high-carbon stainless steel knives, the application range of the kitchen storage knife rest is remarkably widened, and the universality of the kitchen storage knife rest is remarkably improved.

The invention discloses a preparation method and application of binding-phase-free, high-toughness and self-toughening WC-based composite ceramic applied to the field of high-speed cutting, and belongs to the technical field of ceramic materials. The invention aims to break through the technical problems that the transition metal carbide is difficult to sinter and densify and low in fracture toughness. The method comprises the following steps: 1, preparing composite powder; and 2, putting the fully mixed composite powder into a mold, and then putting the mold into a discharge plasma sintering furnace for sintering to obtain the WC-based multiphase ceramic. According to the method, transition metal and carbon are subjected to reactive sintering to generate plate-shaped WC crystal grains, in-situ self-toughening of a cutter material is achieved, the phenomena of deflection, bridging and the like occur in the crack propagation process, the crack propagation energy is consumed, and therefore the strength and toughness are remarkably improved; the invention avoids introduction of a binding phase which is low in melting point and easy to soften at high temperature, develops a novel design and preparation method of the ceramic cutter material for high-speed cutting, and has important significance for the ceramic cutter material for high-speed cutting.

The invention discloses a boron carbide composite ceramic tool bit and a preparation method thereof. The boron carbide composite ceramic tool bit comprises a tool bit body and a welding transition body, the tool bit body is internally provided with a boron carbide ceramic framework with a three-period minimal curved surface topological structure, three-dimensional communicating holes of the framework are filled with a metallic bond and diamond abrasive particles, and the welding transition body is a pure metallic bond transition layer. A hard wear-resistant phase is arranged on the outer surface of the combination body. The method comprises the following steps: constructing a boron carbide ceramic skeleton with a pore surface micro-nano diversion trench through additive manufacturing, and depositing an electromagnetic sensitive phase; injecting the powder into the three-dimensional communicated pores and assembling a green body; applying mechanical oscillation pressure and a high-frequency alternating electromagnetic field at the sintering temperature, and inducing an in-situ metallurgical reaction by utilizing local joule heat generated by a skin effect to finish densification sintering; and a surface hard wear-resistant phase is generated through chemical heat treatment or component in-situ reaction. Compact interlocking of the internal structure is achieved, the service life of the tool bit is prolonged, and the welding strength of the tool bit is improved.

The invention discloses a device for preparing a textured ceramic cutting tool, and belongs to the technical field of ceramic cutting tools. A ceramic core rod is placed in a circular truncated cone cavity, long-strip-shaped beta-silicon nitride whiskers are added into ceramic slurry of the ceramic core rod, the ceramic slurry slowly flows into the circular truncated cone cavity under the action of gravity, the circular truncated cone cavity slowly rotates and is slowly away from the ceramic core rod, and the circular truncated cone cavity obliquely moves relative to the ceramic core rod. The ceramic core rod slowly covers the surface slurry to be thickened under the action of the oblique speed of the circular truncated cone cavity, most of the long-strip beta-silicon nitride whiskers are distributed in the same movement direction under the movement, and the texturing effect of the outer structure of the ceramic cutter is achieved.

The invention discloses a fixed semiconductor wafer cleavage device, which is provided with a scribing device and a splitting device, the two parts are respectively provided with a fixing mechanism and a processing mechanism and can move along a guide rail, a wafer mounting mechanism is arranged in the middle of the cleavage device, and a wafer is fixed on the wafer mounting mechanism through a wafer ring. The scribing fixing mechanism carries out vacuum adsorption, the scribing machining mechanism carries out scribing on the wafer at the designated position of the wafer, the wafer fixing mechanism supports the wafer at the lower portion of the wafer mounting mechanism, and a ceramic knife of the wafer machining mechanism is aligned with the back of a wafer scratch and presses downwards, so that the wafer is cleaved and broken along the scratch. Therefore, the semiconductor cleavage automatic processing of the fixed wafer is realized.

The application discloses a preparation method of a textured ceramic cutter and belongs to the technical field of ceramic cutting tools. The method comprises the following steps: preferentially preparing a ceramic core rod; placing the ceramic core rod into a circular table cavity; adding long strip beta-silicon nitride whiskers into ceramic slurry of the ceramic core rod; and slowly flowing the ceramic slurry into the circular table cavity through gravity, slowly rotating and moving away from the ceramic core rod, and moving the circular table cavity relative to the ceramic core rod in a slanting manner. The ceramic core rod slowly covers the surface slurry and thickens under the action of the slanting speed of the circular table cavity, and the long strip beta-silicon nitride whiskers are mostly distributed in the same movement direction under the movement, so that the effect of texturing the outer structure of the ceramic cutter is achieved.

A kind of ceramic cutter with magnetic absorption function, its structure includes storage bin, it includes at least one magnetic attraction plugboard and magnetic attraction column and storage shell, the storage shell inside has accommodating groove, the magnetic attraction plugboard and magnetic attraction column are located in accommodating groove, the outer wall of storage shell is embedded with adsorption groove;Handle, detachably set in adsorption groove, it includes mutually nested shell and inner shell, a plurality of positioning nails are provided on the shell and inner shell, the shell and inner shell are provided with hollow hole matched with positioning nail, the inner shell is provided with insertion slot;Blade body, slidingly arranged in insertion slot, is provided with magnetic attraction assembly at bottom;The cutter is realized the quick replacement of blade body and handle by magnetic attraction connection mode.Cylindrical storage bin is designed simultaneously, inner wall is provided with rotatable magnetic attraction insertion slot, for subpackaging different function blade body, outer wall is embedded with adsorption groove, for adsorbing handle, improve the storage efficiency, also by magnetic attraction connection mode, the stability and safety of cutter are enhanced.

This invention discloses a hydrophobic ZrO2 ceramic for ceramic knives and its preparation method, belonging to the field of ceramic materials technology. The preparation method of this invention includes the following steps: (1) raw material mixing; (2) two-step sintering; (3) annealing treatment; (4) laser surface treatment. This invention uses a pressureless two-step slow sintering process combining nano- and micro-scale ZrO2 powder gradation with multi-component additives to prepare a highly dense and strong ceramic matrix. On this basis, annealing treatment under an oxygen atmosphere is introduced to form an oxygen-saturated surface layer, and laser scanning with specific parameters is used to construct a micro-scale mesh-like protrusion structure with high mechanical strength. This structure gives the ceramic material surface durable hydrophobicity, with a water contact angle of 140-150°, effectively preventing food adhesion and easy cleaning, and the fracture toughness of the material is 6.94-7.56 MPa·m. 1 / 2 With a flexural strength of 683–746 MPa, it achieves long-term stability of surface hydrophobicity while maintaining excellent mechanical properties and durability.

1. The name of the design product: ceramic blade probe arm. 2. The use of the design product: the design product is used for loading and installing ceramic blade probes, and for double signal transmission with test equipment. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention discloses a lightweight high-strength electric hammer drill and a preparation process thereof, and belongs to the technical field of electric hammer drills. The light-weight high-strength electric hammer drill comprises an electric hammer drilling machine and an electric hammer drill bit body, a cutting tool bit is installed at the front end of the electric hammer drill bit body, a carbon fiber composite rod is arranged in a hollow drill rod, and a penetrating rod is installed between the carbon fiber composite rod and the electric hammer drill bit body. The electric hammer drill bit solves the problems that in the actual using process of an existing drill bit body, the weight of the drill bit affects operation, and the working life of the drill bit cannot be guaranteed in long-term work, by introducing the ceramic tool bit, the wear-resisting life of the electric hammer drill bit body is increased by the order of magnitude, and when the ceramic tool bit drills reinforced concrete, the service life of the electric hammer drill bit body is prolonged. The electric hammer drill bit is high in abrasion resistance, the three-dimensional woven carbon fiber structure is adopted, the pulse impact load of an electric hammer can be effectively resisted, and the electric hammer drill bit body is not prone to layering and cracking under high-frequency impact and excellent in toughness performance.

The application discloses a reinforced wear-resistant Si3N4-BN-based composite ceramic cutter and a preparation method thereof, and the raw material composition according to the weight percentage is as follows: 20-22wt% of alpha-Si3N4, 11-13wt% of gamma-Si3N4, 16-17wt% of r-BN, 13-15wt% of c-BN, 10-12wt% of Ti(C,N), 8-10wt% of TiC, 2.0-2.5wt% of Co, 3.0-3.5wt% of Ti, 2.0-2.5wt% of Mo, 1.5-2.0wt% of a sintering agent, 3.0-4.0wt% of a dispersing agent, 0.8-1.0wt% of a lubricant, 0.5-1.5wt% of a reinforcing agent, 1.3-2.5wt% of a coating material and 2.0-2.5wt% of a negative ion powder. The application takes Si3N4 and BN as the main base materials of the ceramic cutter, optimizes the formula design and the preparation process, improves the compactness and sintering property of the cutter, significantly improves the quality and performance of the composite ceramic cutter, and can well meet the high-precision turning machining requirement.

The invention belongs to the field of ceramic cutting tool materials, and particularly relates to a complex-phase Ti (C, N)-based ceramic material with a double-solid-solution microstructure and a preparation method of the complex-phase Ti (C, N)-based ceramic material. The prepared ceramic material is prepared by taking Ti (C, N) as a matrix and adding ZrC, NbC and Mo2C as reinforcing phases through spark plasma sintering. The addition of ZrC induces the formation of a (Ti, Zr, Nb) (C, N) second solid solution phase rich in Zr elements; the dispersed distribution of the (Ti, Zr, Nb) (C, N) second solid solution phase in the crystal and at the crystal boundary can effectively pinning the crystal boundary, inhibit the abnormal growth of the crystal grains in the sintering process, realize the spanning from a single solid solution to the multiphase ceramic, obviously improve the bending strength, hardness and wear resistance of the Ti (C, N)-based ceramic material, and greatly improve the service life of the ceramic material. And irreplaceable importance is shown in the fields of cutter materials, precision machining and the like.

The invention belongs to the technical field of ceramic cutters, and discloses a ceramic cutter with nano-composite gradient thermal barrier layers and a preparation method thereof.The ceramic cutter comprises a matrix layer and gradient thermal barrier layers symmetrically attached to the two side faces of the matrix layer, in the matrix layer, Ti (C, N) serves as a matrix phase, Al2O3 and WC serve as reinforcing phases, and MgO serves as a sintering aid; in the gradient thermal barrier layer, Al2O3 is used as a matrix phase, (W, Ti) C and Ti (C, N) are used as reinforcing phases, nano ZrO2 is used as a toughening phase and a heat conductivity coefficient regulating phase, and Y2O3 and MgO are used as sintering aids; moreover, in the gradient thermal barrier layer, the contents of (W, Ti) C and nano ZrO2 are decreased progressively from the outside to the inside, the content of Ti (C, N) is increased progressively from the outside to the inside, and the heat conductivity coefficient is increased progressively from the outside to the inside. The middle matrix layer Ti (C, N) metal ceramic matrix material has a relatively high heat conductivity coefficient, so that the heat accumulation effect of the rake face of the tool can be relieved by dissipating heat.

The utility model relates to the field of milling cutters, in particular to an integral metal ceramic round nose milling cutter, which is characterized in that a ceramic cutter head is clamped and mounted at the bottom of a connecting cutter handle in a limiting manner, guide grooves are symmetrically formed in the outer side of the ceramic cutter head, cutting edges are arranged at the bottoms of the guide grooves, and liquid outlet holes are formed in the middles of the guide grooves. According to the milling cutter, the overall high temperature resistance, the mechanical strength and the wear resistance of the milling cutter are improved through the ceramic cutter head, the guide groove and the guide groove are formed in the ceramic cutter head so that the function of guiding chip removal can be achieved through the arc-shaped design of the guide groove, chip accumulation is avoided, the heat dissipation efficiency of cooling liquid to the cutter head is improved through the arrangement of the liquid outlet and the drainage groove, and the service life of the milling cutter is prolonged. Abrasion of the milling cutter is reduced, and service life of the milling cutter is prolonged.

The utility model discloses a kind of coating equipment for high-hardness coating metal ceramic cutters, including abutment, the one side of the abutment is provided with coating assembly, the one side of the mounting seat is rotatably connected with worm wheel, the outer wall of the slide bar is fixedly connected with limit strip, one end of the slide bar is fixedly connected with plug block, the inside of one plug block is provided with blade tip slot, the inside of another plug block is provided with handle slot, the utility model relates to ceramic cutter processing technical field;The coating equipment for high-hardness coating metal ceramic cutters, first end of ceramic cutter is inserted into blade tip slot, then start cylinder, cylinder further promotes the slide bar to move forward and further inserts plug block to specified position, while the cylinder of other side also promotes another plug block to move and further inserts the handle end of ceramic cutter into handle slot, first numerical control spray gun and second numerical control spray gun can be started simultaneously to spray the two sides of cutter at this time.

The application discloses a ceramic knife grinding single-face opening blade device with multidirectional grinding function and relates to the technical field of grinding devices. The opening blade device comprises a shell, a feeding unit, a grinding unit, a fixing seat, a rotating motor, a first gear, a transmission gear, an external gear, a loose pulley, a center gear and a clamping jig. The feeding unit sends the blade to the clamping jig, the clamping jig clamps and fixes the blade at a preset fixed angle, the rotating motor is started, the external gear is driven to rotate through the transmission gear, the center gear is driven to rotate by the grinding unit, multidirectional grinding is provided, the blade edge quality is improved, after the grinding unit finishes grinding one end face of the blade, the clamping jig is adjusted to fix the blade at another preset angle, the other end face of the blade is ground, after the grinding is finished, the rotating motor and the grinding unit stop working, the clamping jig returns to the initial angle and releases the blade, the feeding unit takes out the blade and sends the blade to a laser cutting area for scribing and cutting.

The invention discloses a preparation method and application of a ceramic cutter material for high-temperature alloy finish machining, and belongs to the technical field of ceramic materials. The invention aims to solve the problems that the existing cutter material is easy to deform and is quickly worn, the cutter tip is easy to break, the surface quality after processing is poorer, the groove is seriously worn in the high-speed finish machining process, and the service life of the cutter is seriously limited. The high-hardness and high-chemical-stability (Zr, W) C solid solution serves as a matrix, active metal is adopted to induce the matrix to separate out a needle-shaped second phase to achieve self-toughening, the high-hardness and high-toughness carbide-based ceramic cutter material is developed, the grain size is more uniform and small, the high-temperature performance is stable, the mechanical property and oxidation resistance are excellent, and the relative density is gt; the hardness at room temperature is 25-35 GPa, and the fracture toughness is 5.0-6.5 MPa.m < 1 / 2 >. The preparation method is of great significance to preparation of high-toughness ceramic cutter materials.

The application belongs to the field of ceramic cutter material, and particularly relates to a dual solid solution microstructure composite Ti(C, N) based ceramic material and a preparation method. The ceramic material prepared by the application is prepared by adding ZrC, NbC and Mo2C as reinforcing phases by using discharge plasma sintering, with Ti(C, N) as a matrix. The addition of ZrC induces the formation of a Zr element-rich (Ti, Zr, Nb)(C, N) second solid solution phase; the dispersion distribution of the (Ti, Zr, Nb)(C, N) second solid solution phase at the intracrystalline and grain boundary can effectively pin the grain boundary, inhibit the abnormal grain growth in the sintering process, realize the leap from a single solid solution to a composite ceramic, and significantly improve the bending strength, hardness and wear resistance of the Ti(C, N) based ceramic material, which exhibits irreplaceable importance in the fields of cutter material and precision machining.

The utility model belongs to the technical field of capsule production, and mainly relates to a novel ceramic knife tool which comprises a main body, a guide groove and a knife sharpening groove which are communicated with each other are arranged on the main body, a knife pressing piece is arranged in the guide groove, a ceramic knife to be sharpened is placed in the knife sharpening groove, and the knife pressing piece extends into the knife sharpening groove. The pressing block is used for pressing the to-be-ground ceramic knife to the main body in the first direction, so that the to-be-ground ceramic knife is fixed; a positioning piece is detachably assembled at a notch of the knife sharpening groove, and the positioning piece pushes and presses the to-be-sharpened ceramic knife to the main body in the second direction, so that the to-be-sharpened ceramic knife is fixed; the first direction is perpendicular to the second direction. According to the novel knife sharpening tool, the knife pressing piece is used for pressing and fixing the ceramic knife, the positioning piece is used for accurately positioning the position of the ceramic knife, and due to the fact that a traditional jackscrew knife pressing mode is omitted, the problems that due to jackscrew fixing, the tool is prone to being damaged, positioning is not accurate and installation is not convenient are solved, rapid and accurate installation of the ceramic knife can be achieved, and the knife sharpening quality is improved.

The application discloses a triangular metal ceramic blade for turning processing, which mainly comprises a triangular blade body, symmetric surfaces, a stepped positioning hole in the center of the blade, a rake face with a variable rake angle, side faces with a 0-degree relief angle, main cutting edges with a polishing function formed between two adjacent side faces, inverted edge structures of the main cutting edges and the secondary cutting edges, a gradually increased width and depth of a chip breaker groove in a direction away from a blade tip, an angle of a chip breaker face connected with the groove bottom which increases in a direction close to the blade tip, a pair of semispherical convex parts of the chip breaker groove of the blade tip part which are symmetric to a diagonal line, an elliptical concave part arranged in the groove bottom of the secondary cutting edge part, a support face connected with the chip breaker face, which has a symmetric wavy groove, a boss with the same height as the support face arranged between adjacent chip breaker faces, and a hexagonal vertical concave part in the middle of the boss. The application can effectively improve the chip breaking effect, prevent chip winding, improve the surface smoothness of the processed surface, and reduce the cutting temperature.

The invention discloses a grinding cutterhead and a preparation method thereof, a grinding device and beverage brewing equipment. The grinding cutterhead comprises a base, a grinding tooth group and a spur group. Materials are punctured and broken by the stabbing groups to form coarse particles, and the coarse particles enter the grinding gap from the inner peripheries of the two cutter heads and then are further cut and ground by the grinding tooth groups, so that the temperature rise degree of the materials in the grinding process is reduced, the grinding efficiency is improved, the original flavor of the materials can be more kept, and the taste of drinks is improved. The preparation method of the grinding cutterhead comprises the following steps: adding ethanol into aluminum oxide powder, grinding, mixing, drying and sieving to obtain first powder; the first powder and a binder are mixed, mixed and granulated, and injection molding feed is obtained; carrying out injection molding on the injection molding feed to obtain a ceramic green body; degreasing the injection-molded ceramic body to obtain a ceramic blank; and sintering the ceramic blank at a first preset temperature, and machining to form a finished ceramic cutter.

The application belongs to the technical field of ceramics, and discloses a superhard fine-grain core-shell structure TiB2-TiC-W composite ceramic and a preparation method and application thereof; in the fine-grain core-shell structure TiB2-TiC-W ceramic, the core is a TiB2 and TiC matrix, and the shell is a (Ti, W)B2 solid solution and a (Ti, W)C solid solution. The composite ceramic is obtained by ball milling and mixing TiB2 powder, TiC powder, W powder and Al2O3 powder to obtain a mixed powder; under vacuum conditions, the mixed powder is subjected to an axial pressure of 30-35 MPa, and is sintered by discharge plasma at a temperature of 1800-1900 DEG C. The superhard fine-grain core-shell structure TiB2-TiC-W composite ceramic has high hardness, high toughness and high wear resistance, and can be applied in the fields of wear-resistant parts and ceramic cutters.

The invention relates to the technical field of ceramic knife production, and particularly discloses a high-strength ceramic knife production process which comprises the following steps: S1, directional pretreatment of whiskers; s2, mixing the ceramic matrix; s3, preparation of a binder: dissolving polyvinyl butyral in absolute ethyl alcohol to form a solution, adding a titanate coupling agent NDZ-201, and stirring at a constant temperature until the solution is transparent and uniform to obtain a composite binder; s4, freeze-drying granulation: mixing the mixed powder with a composite binder, adding absolute ethyl alcohol, stirring to form slurry, injecting the slurry into a mold, freezing, drying in a freeze dryer, and crushing and sieving to obtain granulation powder; s5, gradient hot pressing sintering: filling the granulated powder into a graphite mold, and sintering in a vacuum hot pressing furnace; and S6, laser surface strengthening is conducted, specifically, the sintered body is placed on a pulse laser machining platform, and laser cladding treatment is conducted on the cutting edge area of the cutter through a laser device.

The invention relates to a composite chip breaking tool. The composite chip breaking cutter comprises a main cutter body part which comprises a cutter body; the ceramic blade is arranged at the front end of the cutter body; the blade fastening part comprises a cutter pressing seat and a chip breaking baffle, the cutter pressing seat is arranged on the cutter body, the chip breaking baffle is arranged on the cutter pressing seat, and the cutter pressing seat presses the ceramic blade onto the cutter body through the chip breaking baffle; wherein a chip breaking inclined plane is formed on the periphery of the chip breaking baffle, and the chip breaking inclined plane is matched with the top surface of the ceramic blade to form a chip breaking structure. By means of the method, efficient curling breaking and rapid separation of cuttings can be achieved, the continuity and stability of quenched steel turning machining are guaranteed, the machining efficiency and the product quality are improved, and the machining cost is reduced.

The invention discloses a preparation method for comprehensively improving wear resistance, strength and toughness of a silicon nitride ceramic knife, and belongs to the technical field of ceramic products. According to the invention, silicon nitride ceramic powder of three different D50 silicon nitride crystal grains is mixed, and heat treatment is carried out on two-end distribution, so that liquid phase generation of fine-grained and coarse-grained sintering aids at different temperatures is promoted, and more uniform ceramic crystal grain differentiation growth of the silicon nitride ceramic is promoted in time and space; after sintering, the three kinds of silicon nitride powder are distributed to form a corresponding ceramic microstructure, the requirements of the silicon nitride ceramic knife for high toughness, high strength and high wear resistance are considered, and the service life of the knife is comprehensively prolonged.

The invention relates to the technical field of electric hair clippers, and discloses an intelligent charging and inserting dual-purpose electric hair clipper which comprises a clipper body and a clipper head assembly, the clipper head assembly is detachably connected with the clipper body, the clipper head assembly comprises a supporting bottom plate, and a metal blade is fixed to the end of the supporting bottom plate. An adjusting plate capable of moving left and right in a reciprocating mode is arranged on the surface of the supporting bottom plate in a sliding mode, a ceramic blade is fixed to the end of the adjusting plate, a fixing base is fixed to the surface of the supporting bottom plate, and an ejector rod used for lifting the adjusting plate is arranged on the fixing base in a sliding mode. According to the technical scheme, the ceramic blade can be lifted firstly, so that a gap exists between the ceramic blade and the metal blade, then the brush moves along the gap between the ceramic blade and the metal blade, hair on the ceramic blade and the metal blade is swept away through the brush, and therefore the hair on the ceramic blade and the metal blade can be swept away under the condition that the tool bit assembly and the machine body do not need to be detached. And cleaning work is completed.