42 results about "Hard metals" patented technology

The application discloses a multi-blade hard alloy cutting tooth and application, which comprises a cylindrical base body, an upper outer cutting unit and a lower outer cutting unit are arranged on the outer wall of the cylindrical base body; an upper inner concave structure is arranged on the top surface of the cylindrical base body, and a lower inner concave structure is arranged on the bottom surface of the cylindrical base body; an upper inner cutting unit is arranged at the center of the upper inner concave structure, and a lower inner cutting unit is arranged at the center of the lower inner concave structure. The application realizes good cutting ability through a plurality of sharp cutting edges, improves stress concentration effect and thus improves cutting efficiency. The application is provided with the inner concave structure, so that the cutting tooth has good chip breaking capacity, can reduce the formation of long iron chips and prevent repeated crushing caused by the accumulation of iron chips at the bottom of the drill bit. The application can be mass-produced and avoids the unevenness of random broken hard alloy particles.

A stud (100) for improving grip of a tyre (200). The stud (100) comprises a body (120) comprising a base flange (140) and a second part (130), the second part (130) being joined to the base flange (140), and a pin (110) protruding from the second part (130) in the longitudinal direction (Sz) of the stud (100). The pin (110) comprises hard metal or ceramic. The base flange (140) has a first cross-section having a first area (A140). The pin (110) has a second cross-section having a second area (A110). A ratio (A140 / A110) of the first area (A140) to the second area (A110) is 6.5 to 21. Moreover, the pin (110) protrudes a first height (H110) from the second part (130) such that a ratio (A140 / H110) of the first area (A140) to the first height (H110) is 20 to 50 mm2 / mm.

The utility model relates to a kind of hard alloy assembly pinch roll, belong to steel rolling equipment technical field.The pinch roll includes roll ring, base and cover plate;The base and cover plate are all ladder shaft structure, and are divided into thick section and thin section;The base is coaxially arranged with cover plate and thin section is opposite, is fixedly connected by fastener, and two thin sections butt joint form the roll ring installation groove extending in circumference;The base and cover plate central through hole are equipped with inner hole;The roll ring is set in base and cover plate outer, and the inner hole of roll ring is equipped with the convex extending in circumference, the convex and the roll ring installation groove shape are matched and there is radial and axial interference fit.The utility model realizes the consideration of economy and durability by assembly structure, and reduces the instability of non-integral structure by structural design.

A method for producing a housing for a rotary piston engine, a shell housing, and a housing for a rotary piston engine, are disclosed. A bushing of hard metal is pressed into a shell housing main body with a trochoidal raceway in such a manner that an external circumferential contour of the bushing bears in a sealing manner on the trochoidal raceway and the trochoidal raceway is cladded via the bushing.

The present application relates to the technical field of metal composite plate preparation, and particularly relates to a self-riveting microstructure metal composite plate mold pressing forming method. The method comprises the following steps: step S1: preparing a self-riveting microgroove structure on the riveting surface of a hard metal plate; step S2: preparing a self-riveting microconvex structure on the riveting surface of a soft metal plate; step S3: annealing the soft metal plate; step S4: pretreating the riveting surfaces of the soft and hard metal plates; step S5: fixing the riveting surfaces of the soft and hard metal plates face to face, so that the self-riveting microconvex structure and the self-riveting microgroove structure are one-to-one correspondingly inserted to form a laminated plate; step S6: preheating the laminated plate by copper foil cladding; step S7: mold pressing the laminated plate to obtain a composite plate; and step S8: annealing the composite plate. The present application realizes high-strength mechanical riveting and metallurgical bonding dual reinforcement interface of the soft and hard metal composite plate, and improves the comprehensive performance and reliability of the composite plate.

This utility model relates to the field of mobile shelving technology and discloses a mobile shelving buffer device, including a fixed frame, the fixed frame including a frame body and a turntable, the turntable being installed on the outer side of the frame body, and a buffer structure including a groove, a buffer plate, and a protective pad. The right wall of the frame body has a groove, the inner side of the groove has a buffer plate, the outer wall of the buffer plate has a protective pad, and the left wall of the buffer plate has multiple connecting columns. The connecting columns pass through the fixed groove and are connected to a sliding plate. The sliding plate is located inside a storage slot, and the storage slot is located inside the frame body. This utility model avoids direct collisions with hard metal, prevents scratches and deformation of the frame body, and also avoids sharp impact noises that interfere with the office and reading environment. It provides double buffering and prevents spring rebound, thus preventing the frame body from shifting after buffering.

A tool, in particular for soil cultivation, especially an agricultural soil cultivation tool or a construction soil cultivation tool, with a cast base body made of a steel or cast iron material and having a support section (17), wherein one or more wear-protection elements (20, 50.1, 50.2), consisting of hard metal, are supported on the support section (17) by means of a fastening section (24) and are cast to the support section (17), wherein the at least one wear-protection element (20, 50.1, 50.2) is enclosed at least partially on opposite sides by means of side frames (17.1, 17.2, 17.3; 19.2, 19.4) of the cast base body, characterized in that at least one of the side frames (17.1, 17.2, 17.3; 19.2, 19.4) is a recess (18) is / are interrupted, and that the recess (18) extends to a body boundary of the wear protection element (20, 50.1, 50.2) is led.

The utility model discloses hard alloy product processing device of decarburization, belongs to product processing technical field, it includes furnace body, the lower part fixedly connected with the supporting leg of furnace body, the left end rotationally connected with the furnace cover of furnace body, the fixedly connected with vertical board in furnace body, the rotationally connected with baffle no. The utility model discloses through setting up vertical board, baffle no. Baffle no. The cooperation between the processing device through baffle no. Baffle no. And adjusting structure, thereby can separate processing to the inside of furnace body, makes to different batches of product can be in the same processing period and carries out the independent decarburization processing, thereby has improved production efficiency and the accuracy of quality control, and reduced the operation procedure of subsequent.

The invention relates to a tool (1, 3) for machining a brittle material, in particular glass, hard metal, monocrystalline silicon, and / or ceramic, with - an imaginary central axis (5), - a processing end (7), - a clamping end (9) opposite the end of the machining (7), and - a plurality of cutting edges (11), wherein - the majority of cutting edges (11) in the area of ​​the machining end (7) run along an imaginary cutting edge path (13), wherein - each pair of cutting edges (11) of the plurality of cutting edges (11) are spaced apart from each other by a cutting edge interruption (15) at an interruption position along the imaginary cutting edge path (13), wherein - the imagined cutting edge path (13) has a total length (17), wherein - each cutting edge (11) of the plurality of cutting edges (11) has a cutting edge length (19), and wherein - a ratio of the sum of the cutting edge lengths (19) to the total length (17) is less than 1 and - each cutting edge length (19) is shorter than 1.5 mm.

The application discloses a hard alloy product rod-penetrating device, and belongs to the technical field of hard alloy production equipment. The device comprises one or more rod-penetrating units. Each rod-penetrating unit comprises a lower fixing assembly for fixing the lower part of a material rod carrier and keeping the material rod carrier in an up-and-down extending state, and a transfer module for transferring a workpiece to the upper part of the material rod carrier and releasing the workpiece to penetrate the workpiece into the material rod carrier. Each rod-penetrating unit further comprises a holding assembly for holding the workpiece which has been penetrated into the material rod carrier, and a lifting driving assembly for driving the holding assembly to move up and down. The hard alloy product rod-penetrating device has the advantages of being not easy to cause collision damage, high precision and stability of rod-penetrating operation, and the like.

This utility model discloses a cemented carbide material stirring device, including a stirring frame, a connecting rod at the top of the stirring frame, a protective sleeve rotatably fitted on the outside of the connecting rod, a locking sleeve on the outside of the protective sleeve, the inner wall of the locking sleeve being movably connected to the outer wall of the protective sleeve by threads, a control sleeve rotatably fitted on the outside of the locking sleeve, a protective groove on the outside of the connecting rod, a locking frame fixedly fitted on one side of the control sleeve, a locking rod slidably fitted in the locking frame, a locking plate fixedly fitted at one end of the locking rod, a locking spring movably fitted on the outside of the locking rod, multiple movable grooves on the inside of the protective sleeve, a protective frame on the side wall of the movable groove, a protective block slidably fitted in the movable groove, a movable spring connected to one side of the protective block, a movable block at the other end of the movable spring, a movable sleeve on the outside of the protective sleeve, and a locking groove on the outside of the protective sleeve. This utility model realizes flexible adjustment of the overload trigger threshold and ensures the structural stability after the protection threshold is adjusted, ensuring the stable use of the equipment.

The present application relates to the technical field of alloy, in particular to a kind of hard alloy rod based on regenerated tungsten carbide powder and preparation method thereof.The rod is prepared from carbon shell regenerated tungsten carbide powder, cobalt powder, vanadium carbide powder and tricarbide chromium powder by low-energy mixing, dense mixing extrusion, dewaxing sintering and fine grinding.The carbon shell regenerated tungsten carbide powder is obtained by sequentially forming first polydopamine sublayer containing urea, second polydopamine sublayer and resorcinol-formaldehyde resin outer layer on the surface of regenerated tungsten carbide particles, and then pre-pyrolysis by argon.The hierarchical carbon shell is used to compensate the carbon-oxygen fluctuation on the surface of regenerated tungsten carbide particles during sintering process, so that the obtained rod has fine and uniform tungsten carbide grains, lower hardness dispersion, higher transverse breaking strength and lower micro-drill edge collapse rate.

The utility model relates to a hard alloy base body with central concave edge multi-rib, belonging to the technical field of petroleum and geological drilling tools. The upper end face of the base body is provided with a central conical boss, and the arc conical surface on the circumferential outer side is connected and transitioned through an annular convex rib. The arc conical surface is provided with a narrow radial convex rib and a radial wide inclined rib with two wider inclined surfaces and a central arc transition in the radial direction. The two convex ribs are annularly symmetrical, uniformly distributed and arranged at intervals. This structure can limit the load during work to the edge area outside the annular convex rib, the central area is less affected, can effectively block the crack expansion to the center, prevent the whole diamond layer from falling off, and avoid the diameter reduction of the drill bit due to ring abrasion. At the same time, the design of the narrow convex rib and the wide inclined rib improves the stress distribution, improves the bonding strength, and prolongs the service life of the composite sheet. The utility model has flexible and adjustable structure, strong adaptability, can significantly reduce the drill bit failure risk, improve the drilling efficiency, and has significant economic and social benefits.

The application discloses an ultrasonic water meter and a transducer, which integrates a temperature sensor in a transducer shell and uses a hard metal needle as an external electrical interface, so that the transducer and the temperature measurement function are integrated, the temperature sensor does not need to be separately installed on a pipe section, the installation interface on the pipe section is reduced, the risk of water leakage is reduced, temperature collection and sound wave generation can be realized at the same point, and the risk of temperature verification distortion caused by different temperature collection points is avoided; on the other hand, the hard metal needle interface replaces the traditional soft wire leading-out structure, provides convenience for automatic assembly and welding, and reduces production difficulty and cost.

The application discloses a hard alloy saw blade suitable for wood cutting, which comprises a saw blade base body, a plurality of alloy cutter heads are arranged on the outer circumferential side of the saw blade base body at a circumferential interval, the outer side end of the saw blade base body is divided into a plurality of cutter head bodies by the plurality of alloy cutter heads, the alloy cutter heads are arranged at one end of the cutter head bodies and extend outward from the cutter head bodies, first chip removal and heat dissipation holes are formed between adjacent cutter head bodies, and a plurality of second chip removal and heat dissipation holes are uniformly arranged on the saw blade base body in a circumferential direction. The plurality of cutter head bodies are arranged on the saw blade base body, the first chip removal and heat dissipation holes formed between adjacent cutter head bodies can quickly remove the sawdust generated during cutting and timely dissipate heat, friction and temperature rise caused by the fact that the sawdust is stuck between the cutter head bodies and wood are avoided, the wood is affected by heat generation, and the temperature dissipation effect of the second chip removal and heat dissipation holes on the saw blade base body is further enhanced.

This invention relates to the field of wear-resistant component manufacturing technology for mining machinery, specifically disclosing a high-wear-resistant and impact-resistant cemented carbide jaw plate and its manufacturing method. The jaw plate's surface layer uses low-cobalt, fine-grained tungsten carbide with added grain growth inhibitors, while the bottom base uses medium-high cobalt, coarse-grained tungsten carbide, achieving a performance gradient of high wear resistance on the surface layer and high toughness and strength on the base. By controlling the forming agent and spray drying process to match the interlayer shrinkage coefficients, and combining hydraulic pressing and wet bag isostatic pressing secondary forming to eliminate density differences, along with segmented dewaxing, vacuum pressure sintering, and slow cooling, the interlayer sintering stress is effectively reduced. Finally, a two-stage stress-relief treatment involving liquid nitrogen gradient cryogenics and vacuum tempering eliminates internal material stress. The jaw plate obtained by this invention has a dense, defect-free interlayer bond, low residual stress, and excellent wear resistance and impact resistance, significantly improving its service life and reliability under high-purity silicon crushing conditions.

This invention discloses a bimetallic matrix composite material with a three-dimensional interpenetrating structure and its preparation method, belonging to the technical field of metal matrix composites. It addresses the technical problems of traditional processes' inability to precisely control the spatial configuration of the reinforcement and the insufficient comprehensive mechanical properties of composite materials. The preparation of the bimetallic matrix composite material includes the following steps: mixing skeleton metal powder, dispersant, and solvent to obtain a metal molding slurry; extruding and printing the metal molding slurry according to a preset three-dimensional mesh model using ink direct writing technology, layer by layer to obtain a metal skeleton preform; freeze-drying the metal skeleton preform, followed by sintering to obtain a porous metal skeleton; placing a filler metal on top of the porous skeleton metal, and obtaining the bimetallic matrix composite material using a melt infiltration method. In this invention, molten Mg reacts in situ with Ni and Cu elements within the skeleton during the infiltration process, generating a hard Mg-Ni-Cu intermetallic compound. The resulting composite material has extremely low porosity, exhibiting excellent compressive strength (up to 289 MPa), flexural strength, and fracture toughness, achieving a synergistic gain of lightweight and high strength and toughness.

This invention relates to the field of thermal spraying technology and discloses a preparation process for a conductive and corrosion-resistant cemented carbide coating, addressing the problem of conductive failure in existing cemented carbide coatings under corrosive environments due to preferential corrosion of the binder phase or oxide formation. This invention proposes a composite coating system based on a nickel-chromium-molybdenum ternary alloy binder phase, carbon nanotubes, and lanthanum oxide dual-effect modification, along with an optimized entire process. Ternary alloying achieves complementary enhancement of mechanical properties and corrosion resistance; carbon nanotubes construct a low-resistivity conductive network; and the interface purification effect of rare earth oxides improves coating density. The prepared coating exhibits excellent bonding strength, extremely low volume resistivity, and outstanding long-term corrosion resistance, effectively providing dual protection of physical shielding and functional conductivity under harsh operating conditions.

This utility model relates to the technical field of stainless steel pipe processing equipment, and discloses a drawing mechanism for stainless steel pipe processing, including a frame. A drawing clamp is provided on the top of the frame, and two sets of arc-shaped clamping blocks are symmetrically arranged on the top of the drawing clamp. This stainless steel pipe drawing mechanism, through an innovative composite pad structure and connection method, significantly improves maintenance efficiency while ensuring the drawing quality of stainless steel pipes. The design of the inner and outer arc-shaped rubber-metal wire composite pad avoids the problem of indentation and scratches on the steel pipe surface caused by traditional hard metal clamps by the flexible buffering characteristics of rubber. The embedded metal wire enhances the structural strength and wear resistance, ensuring that the surface quality of the finished product reaches a high precision standard. The composite pad is connected to the clamp by bolts, which facilitates quick replacement when worn without disassembling the entire clamp. This reduces maintenance costs and allows for flexible replacement of composite pads of different specifications according to process requirements, significantly improving the applicability and production efficiency of the equipment.

The application provides a gas bag type spacecraft storage and transportation container, which comprises a top cover, an upper flange of a box cover, a flexible container cover, a guide assembly, a lower flange of the box cover, a container bottom and a flexible film. The application has the beneficial effects that: the lifting operation of the flexible container cover is completed by using the power of air pressure and the self weight of the flexible cover, the lifting height limit of the factory building crane is avoided; the opening and closing operations of the container cover can be realized only by inflation and deflation, the hoisting and sleeving operation is cancelled, the operation process is simplified, and the operation risk is reduced; the regular and orderly folding storage of the container cover is realized, and the folding and unfolding are easy; the folding and unfolding ratio is greater than 10:1, the storage volume is greatly reduced; the hard metal is changed into the flexible film material, and the self weight of the container is greatly reduced.

The application discloses a hard alloy ball tooth with a concentric circle nested gradient structure and a preparation method thereof; the hard alloy ball tooth is in a concentric circle nested distribution from outside to inside, wherein the content of Co increases layer by layer, the content of WC decreases layer by layer, the gradient direction matches the stress and the wear direction in the service process of the ball tooth, and a radial performance distribution with outer hardness and inner toughness is formed; the application realizes accurate forming of the gradient layer and continuous transition of components by designing a multi-layer radial gradient structure and combining a melt extrusion forming 3D printing technology, stress distribution at the interface between layers is more gentle, problems such as interface peeling or delamination failure are effectively avoided, and the comprehensive mechanical properties and service life of the hard alloy ball tooth are significantly improved.

The application relates to the field of hard alloy materials, and discloses a method for preparing ultrafine-grain WC-Co hard alloy by doping metal oxides. The method comprises the following steps: (1) mixing high-saturation-carbon WC powder, Co powder and metal oxide powder to obtain mixed powder; (2) pressing the mixed powder to obtain a green body; and (3) performing solid-phase sintering and liquid-phase sintering on the green body in a reducing atmosphere, and cooling to obtain the ultrafine-grain WC-Co hard alloy. Through the in-situ reduction / carbonization, interface precipitation and degassing purification mechanisms of the metal oxide-high-saturation-carbon WC-Co system, the growth of WC grains is effectively inhibited, the density is improved, and the interface structure is optimized, so that the ultrafine-grain WC-Co hard alloy with high hardness and good strength and toughness is obtained, and the grain size is less than 0.5 mu m.

This invention discloses a process for manufacturing an impact-resistant and wear-resistant ultra-hard metal-based composite layer and a straightening roller, comprising an alloy groove coating layer one, an alloy groove coating layer two, and an alloy working layer; both alloy groove coating layer one and alloy groove coating layer two have sinusoidal structures, are staggered, and have at least one set of intersection nodes between them, and are located inside the alloy working layer. By introducing V and Nb into the original formulation and precisely adjusting the proportions of components such as Co, Ni, Cr, C, B, and Si to meet the requirements, the composite layer retains high hardness and good oxidation resistance, impact resistance, thermal shock resistance, and corrosion resistance at high temperatures, improving the spraying process performance of the alloy coating and increasing the deposition rate.

The present application relates to the technical field of metal composite plate preparation, and particularly relates to a self-riveting microstructure promoted metal composite plate rolling bonding method. The method is to preheat the stacked soft and hard metal plates, then roll and composite, and in the rolling process, the soft and hard metal plates are combined by self-riveting microstructure to realize mechanical riveting connection of the bonding surface, and form a composite plate; the composite plate is further promoted by heat treatment to realize metallurgical bonding of the bonding interface, and finally obtain a double connection interface of mechanical riveting and metallurgical bonding; the self-riveting microstructure includes a plurality of micro grooves arranged on the surface of the hard metal plate and a plurality of micro protrusions arranged on the surface of the soft metal plate, each column of micro protrusions is respectively inserted into each micro groove, and the micro groove is a necked structure, and in the rolling process, the micro protrusion is plastically deformed to fill and engage into the micro groove. The present application realizes the high-strength mechanical riveting and metallurgical bonding double-strengthened interface of the soft and hard metal composite plate, and significantly improves the comprehensive performance and reliability of the composite plate.

The invention relates to a tool (1, 3) for machining a brittle material, in particular glass, hard metal, monocrystalline silicon and / or ceramic, having - an imaginary central axis (5), - a machining end (7), - a clamping end (9) opposite the machining end (7), and - a plurality of cutting edges (11), wherein - the plurality of cutting edges (11) run along an imaginary cutting edge course (13) in the region of the machining end (7), wherein - every two cutting edges (11) of the plurality of cutting edges (11) are spaced apart from one another by a cutting edge interruption (15) at an interruption position along the imaginary cutting edge course (13), wherein - the imaginary cutting edge course (13) has a total length (17), wherein - each cutting edge (11) of the plurality of cutting edges (11) in each case has a cutting edge length (19), and wherein - a ratio of the sum of the cutting edge lengths (19) to the total length (17) is less than 1 and - each cutting edge length (19) is shorter than 1.5 mm.

The present application relates to a method and device for removing particles from an ion beam etching system, which comprises a metal grid added to the bottom of the reaction chamber of the ion beam etching system, the grid being connected to a DC power supply to generate a positive voltage, the voltage value of the applied positive voltage being adjusted within 100kv according to the size of the particles to be removed. The material of the metal grid c is a hard metal such as molybdenum or nickel, and the mesh size is less than 5mm. After the etching process is completed, the ion source of the ion beam etching system is disconnected, and the lower electrode is rotated to be perpendicular to the grid c; the neutralizer is turned on to generate a large number of electrons attached to the particles to be removed to make the particles negatively charged; the grid c applies a positive voltage through the DC power supply c, and the negatively charged particles move towards the grid c under the action of the electric field; the particles pass through the mesh of the grid c and are pumped out of the chamber by the molecular pump, so that the particles are quickly and effectively removed, the deposition of particles in the interior of the reaction chamber is prevented, and the production efficiency of the ion beam etching system is improved.

The utility model provides a kind of surface polishing equipment for hard alloy bar processing, comprising: polishing mechanism and discharge mechanism;Polishing mechanism includes: base;Several water storage devices, sequentially distribute in base, each water storage device includes sink and the partition that sink is separated into upper and lower distribution cleaning area and separation area, partition is obliquely arranged and low side is equipped with opening;Conveying device, including sequentially striding several sinks and being used for conveying the conveying line of bar material, corresponding conveying line and being used for the limiting guide of bar material several guide wheels;Several polishing devices, respectively corresponding several sinks, each polishing device includes the polishing wheel that is rotated and is used for polishing bar material by rotation driving device drive, is used for the turnover driving device of driving polishing wheel overturn, for spraying cooling water spraying device. By the addition of sink, so that several polishing devices alternately polish or clean, and, by the addition of partition, separate alloy scrap to improve polishing wheel cleaning effect.

A system for ultra-high-pressure spark plasma sintering, characterized in that it comprises a six-sided press body, a high-power DC pulse power supply (1), and a high-pressure synthesis assembly block; wherein the six-sided press body has a frame and a hydraulic drive system for generating ultra-high pressure, wherein six carbide press hammers (6) collectively enclose a cubic space used to hold the high-pressure synthesis assembly block in which a sample is enclosed; wherein two poles of the high-power DC pulse power supply (1) are each connected via two conductive copper strips (2) to an upper and a lower large support block (3), wherein a steel ring (4) is mounted on each end section of the two large support blocks (3), and wherein the carbide press hammers (6) are embedded in the end sections of the steel rings (4).wherein small support blocks (5) are arranged between the hard metal press hammers (6) and the large support blocks (3), the small support blocks (5) each being in contact with the large support blocks (3) and the hard metal press hammers (6), wherein a high-frequency pulse current from the high-power DC pulse current supply (1) is transmitted to the hard metal press hammers (6) via the conductive copper strips (2), the large support blocks (3) and the small support blocks (5); wherein the high-pressure synthesis assembly block comprises a pressure transmission medium (13), wherein an insulating tube (14) is embedded in an inner wall of a cavity of the pressure transmission medium (13), wherein a graphite tube (11) is mounted on the insulating tube (14), the graphite tube (11) being connected at a top and a bottom to a hexagonal boron nitride tube (15),wherein an inner diameter and an outer diameter of the hexagonal boron nitride tube (15) are equal to those of the graphite tube (11), wherein a powdered sample (12) is arranged in the middle of the graphite tube (11), wherein the powdered sample (12) is in contact with an inner wall of the graphite tube (11), wherein conductive graphite plugs (10) are provided at both ends of the graphite tube (11), wherein a total length of the sample (12) and the conductive graphite plugs (10) is equal to the total length of the graphite tube (11) and the two upper and lower hexagonal boron nitride tubes (15), wherein above the conductive graphite plugs (10) in a direction away from the sample (12) a conductive graphite plate (9), a conductive molybdenum plate (8) and a conductive steel cap (7) are successively arranged, wherein the high-frequency pulsed direct current is successively passed through the hard metal press hammers (6), the conductive steel cap (7), the conductive molybdenum plate (8),The conductive graphite plate (9) and the conductive graphite plugs (10) are transferred to the sample (12) to form a closed circuit.