17 results about "Ceramic cutting tool" 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 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 discloses a kind of micro-laminated ceramic cutter materials with thermal barrier function and preparation method thereof, including substrate layer material and surface layer material, wherein, the substrate layer material, by volume parts, its composition is: Al2O3 40-50 parts;TiC 15-25 parts;WC 25-35 parts;Ni 2-6 parts;Mo 1-4 parts;Co 2-5 parts;MgO 0.5-2 parts;The surface layer material, by volume parts, its composition is: Al2O3 50-60 parts;(W,Ti)C 30-40 parts;Nano ZrO2 4-10 parts;MgO 0.3-0.7 parts.The powder layering filling method is used to charge, the composite powder of substrate layer material is laid in the middle, the composite powder of surface layer material is laid on both sides, pre-pressing vacuum hot-pressing sintering, obtain the micro-laminated ceramic cutter with thermal barrier function.Prepared micro-laminated ceramic cutter has the characteristics of hard outside and tough inside, with thermal barrier function and good mechanical properties.

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 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.

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.

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 technical field of cutting tools, and discloses a variable-angle ceramic cutting tool which comprises a tool handle, an adjusting circular truncated cone is fixedly connected to the right end of the tool handle, an adjusting disc is arranged above the adjusting circular truncated cone, a connecting unit is arranged on the outer side of the adjusting disc, and a mounting block is fixedly connected to the surface of the right side of the adjusting disc. A blade is detachably connected to the right side of the mounting block, an annular adjusting tooth set is fixedly connected to the upper surface of the adjusting circular truncated cone, an annular tooth groove set is formed in the bottom face of the adjusting disc, and a protective cover is fixedly connected to the outer side of the adjusting disc. According to the utility model, through the cooperation of the connecting unit, the annular adjusting tooth group and the annular tooth groove group, the angle, equivalent to the knife handle, of the blade can be rapidly adjusted, and meanwhile, through the cooperation of the protective cover, the annular groove, the annular air bag, the annular plate and the push rod, after the adjustment is completed, the knife handle can be rapidly adjusted. And the outer side of the annular adjusting tooth group is completely sealed and protected.

The application discloses a ceramic cutter with temperature sensing, pressure sensing and cutting functions and a preparation method and application thereof. The ceramic cutter is of a layered structure and comprises a ceramic base layer and a pyroelectric material layer attached to one side of the ceramic base layer. The functional material of the pyroelectric material layer is selected from one or a combination of PZT, PLZT or ZnO. The base material of the ceramic base layer is selected from one or a combination of Al2O3, Si3N4 or CBN. The doped phase of the pyroelectric material layer is selected from one or a combination of CeO2 and La2O3. The ceramic cutter integrates the cutting temperature measurement function, the cutting force measurement function and high mechanical properties, so that the cutting force and the cutting temperature can be simultaneously detected under the premise of meeting the cutting performance requirements, that is, the cutting temperature and the cutting force can be measured without additional temperature and force sensors during cutting, and the ceramic cutter has the advantages of simple structure, small volume, high hardness, high bending strength and high fracture toughness, convenient installation and the like.

The utility model discloses a metal ceramic cutter easy to remove chips and cool, which relates to the technical field of ceramic cutters and comprises a cutter body, a plurality of tree-shaped cooling grooves for conveying cooling liquid are arranged on the inner side of the cutter body, at least two turbulent flow blocks are fixedly mounted in each tree-shaped cooling groove, and the turbulent flow blocks are arranged on the inner side of the cutter body. A drainage groove is formed in the cutter body, the two sides of the tail end of the cutter body are provided with outwards-protruding and prismatic cutting edges which are provided with a plurality of cutting edges and angles, in the cutting process, cuttings can be cut into small segments, the cuttings can be preliminarily crushed in the forming process, the length and width of the cuttings are reduced, and the cutting efficiency is improved. The cutter body is made of a titanium-based material and is manufactured by using a sintering process, and the titanium-based material can obtain very high hardness after being specially treated, so that the titanium-based material can keep relatively good blade sharpness and is relatively high in wear resistance in a cutting process, and the service life of the cutter is prolonged.

A ceramic tool material, in particular with piezoelectric effect and a preparation method thereof, and a cutting tool. The ceramic tool material includes the following raw materials by weight: 30-70 parts of matrix material, 30-70 parts of piezoelectric material, 5-10 parts of binder, and 10-20 parts of reinforcing phase and can be made into cutting tools. The cutting tool has a piezoelectric effect and excellent mechanical properties and can convert the cutting force signal into the charge signal during machining. By collecting charge signals, a cutting force can be measured and ceramic cutting tool condition can be monitored. Cutting force measurement function and high mechanical properties are integrated. A ceramic tool material with piezoelectric effect can measure the cutting force on the premise by meeting the cutting performance requirements.

The utility model discloses a silicon nitride special ceramic cutter, and belongs to the technical field of cutters. A silicon nitride special ceramic cutter comprises a cutter head and further comprises a plurality of sets of cutter heads, each cutter head is provided with a cutting face, the cutter head is provided with a plurality of sets of installation grooves, the cutter heads are detachably arranged in the installation grooves through connecting pieces, fluid channels are formed in the installation grooves, and outlets of the fluid channels face the cutting faces. The jet is used for jetting fluid media to the cutting face; the tool bits are detachably arranged on the tool disc, after the tool bits are abraded, the tool bits can be independently replaced, the number of replaced tools is reduced, and the use cost is reduced.

The application relates to the field of surface treatment of ceramic cutters and specifically discloses a high-temperature strong-magnetic heat plasma treatment method for a ceramic cutter surface and a cutter obtained through the method, which comprises the following steps: step 1, placing the ceramic cutter into a vacuum chamber after cleaning and drying; step 2, uniformly preheating the surface of the ceramic cutter through an argon plasma beam, so that the surface of the ceramic cutter is heated to a set treatment temperature zone within a set time, and heat stable transmission and microstructure activation in the preheating temperature zone are realized; step 3, continuously maintaining the high-temperature state to perform short-time heat treatment on the ceramic cutter, so that the grain boundary migration of the Al2O3-TiCN ceramic surface is enhanced, the subgrain structure is rearranged, and the particles are densified, the original micropores are partially closed, the surface structure is significantly densified, and compression residual stress is introduced into the near surface layer; and step 4, cutting off the plasma beam flow and performing furnace cooling treatment on the ceramic cutter in a vacuum or inert atmosphere.

The utility model discloses sintering equipment of a metal ceramic cutter for cutting, which comprises an assembling plate, and a rotary calcining component is arranged in the assembling plate; the rotary calcining assembly comprises a furnace tube, the furnace tube is fixedly connected to the interiors of the two assembling plates, the rotary calcining assembly further comprises a center rod, the outer wall of the center rod is rotatably connected with a supporting ring, the outer wall of the center rod is fixedly connected with a sleeve column, and the interior of the side wall of one end of the furnace tube is rotatably connected with a first butt joint shaft; the two ends of the center rod are fixedly connected with cross-shaped inserting rods. The utility model relates to the technical field of ceramic cutter machining. According to the sintering equipment of the metal ceramic cutter for cutting, the first servo motor is started to drive the worm to rotate, the worm drives the worm gear to rotate, the worm gear drives the first butt joint shaft to rotate, the first butt joint shaft drives the center rod and the sleeve column to rotate, and therefore it can be ensured that each cutter can be evenly heated during sintering.

The invention discloses a Y-alpha-beta-Sialon multiphase ceramic cutting tool material and a preparation method thereof, and belongs to the field of ceramic cutting tool manufacturing, the Y-alpha-beta-Sialon multiphase ceramic cutting tool material comprises a basic raw material, a composite modifier and an auxiliary agent; the basic raw material is prepared from the following components in parts by weight: 74 to 80 parts of Si3N4, 6 to 8.3 parts of Al2O3, 8 to 11 parts of AlN and 6 to 8 parts of Y2O3 powder; the composite modifier is prepared from the following components in parts by weight: 5 to 8 parts of W-doped TaC-BN core-shell powder and 3 to 4 parts of stearic acid modified Sc2O3-Mo nano composite powder; the auxiliary agent comprises a bonding auxiliary agent and a sintering auxiliary agent. All the components in the ceramic cutter material have a synergistic effect, so that the grain size of the material can be ensured to be uniform, and the ceramic cutter material with high mechanical property and high cutting temperature is obtained.

The invention discloses a self-repairing metal ceramic cutter material for cast iron processing and a preparation method thereof, and belongs to the technical field of metal ceramic cutters. The cutter material has multiple functions of autonomously inducing Al, S and Si in cast iron of a machined part to expand towards the surface of a blade, forming a coating layer with self-lubricating and wear-resisting functions on the surface of the blade in situ, realizing dynamic balance of cutter wear and self-repairing, and reducing elements Al, S and Si with damaged comprehensive performance in the cast iron machined part and the like. The cutter material does not contain Ta and Nb, and the production cost can be remarkably reduced. Through adaptive design of raw materials, components and a preparation process and magnetic performance regulation and control, the problems that an existing tool is high in cost, harmful elements of a machined material are difficult to purify, and a metal ceramic tool is short in service life when used for rough machining are solved, and the metal ceramic tool has the advantages of being low in cost, long in service life and optimized in machining performance.

This application discloses a bar stock for manufacturing cutting tools, belonging to the field of cutting tool technology. The target shank portion and the inner core portion of the bar stock constitute the shank portion of the cutting tool to be machined. The shank portion is made of a composite material composed of a target shank portion made of a material with higher hardness and an inner core portion made of a material with higher toughness. When manufacturing end mills, this avoids notches on the cutting edge caused by excessive differences in hardness between the shank portion and the ceramic cutting tip, while simultaneously improving tool toughness, increasing the vibration damping performance of the ceramic cutting tool, and extending tool life. Furthermore, fixing the ceramic cutting tip to the composite material shank portion improves the bar stock's toughness and provides better vibration damping during the machining of parts.