21results about How to "Evenly sintered" patented technology

The invention discloses a horizontal mixed kiln which comprises a heating device and a cooling device which are horizontally arranged and sequentially communicated from top to bottom, the heating device and the cooling device are each provided with a support, the supports are arranged in an up-down laminated mode, the heating device and the cooling device are each provided with a rotating tank capable of moving on the corresponding support, and a mixing structure is arranged in each rotating tank. One end of the rotating tank is provided with a feeding assembly and an air inlet pipe, and the other end of the rotating tank is provided with a discharging assembly and an exhaust pipe. A production line of a traditional sintering technology kiln is replaced by the structure that the horizontal mixing kiln is placed from top to bottom, the occupied area is greatly reduced, heat dissipation of the working environment is facilitated, energy consumption and loss are lower, the machining time is shortened, and the working efficiency is improved; the rotary tank replaces the labor cost of a traditional sagger, and the production cost is lower; nitrogen is filled through the gas inlet pipe, and oxygen in the rotating tank is discharged through the exhaust pipe, so that an oxygen-free environment is achieved in the rotating tank, the lithium battery powder raw material is prevented from being oxidized in the heating process, and the quality of the lithium battery powder is better.

The invention relates to a film sintering high-frequency automatic moving device which comprises a mounting frame, a sintering high-frequency machine is fixed to the outer wall of the middle of the mounting frame, a driving wire feeding roller and a driving wire collecting roller are distributed and mounted on the outer walls of the two ends of the top of the mounting frame, and a guide seat is fixed to the outer wall, located between the sintering high-frequency machine and the driving wire feeding roller, of the mounting frame. A guide groove is formed in the outer wall of the top of the guide seat, and a mounting frame is fixed to the outer wall of one side of the top of the guide seat. The sintering uniform cooling assembly is arranged, an arc cover fixedly covers the top of the water storage tank, an upper guide wheel and a lower guide wheel are matched to guide and convey an electromagnetic wire, the problem that the electromagnetic wire is bent and wrinkled is avoided, a driving wire feeding roller can drive a turbine pump to work, cooling water in the water storage tank is pumped, and the cooling effect of the electromagnetic wire is improved. And the liquid is pumped into the arc cover through the liquid pumping pipe, is sprayed and discharged through the spraying holes, and is sprayed on the outer wall of the conducting and conveying electromagnetic wire in the arc cover, so that a thin film formed after the electromagnetic wire is sintered is quickly cooled.

The utility model relates to the field of sintering devices, in particular to a sintering device for heat pipe machining. The sintering device solves the technical problems that a sintering device in the prior art is usually difficult to sinter a heat pipe more uniformly, and rapid feeding and discharging of the heat pipe are inconvenient. According to the technical scheme, the sintering device for heat pipe machining comprises a supporting assembly; the device further comprises a heating assembly, a moving assembly, a bearing assembly, a transmission assembly and a clamping assembly. A heat pipe is placed on the inner wall of the placing groove, so that the spring is in a compressed state, and the spring enables the extrusion block to extrude the heat pipe, so that the heat pipe can be quickly and stably clamped by the two clamping blocks and the extrusion block, the heat pipe can be conveniently and quickly fixed, and the heat pipe can be conveniently and quickly fed and discharged; and the heat pipe can be rotated through the bearing assembly and the rotating assembly when the heat pipe is heated, so that the heat pipe can be sintered more uniformly.

The heating device comprises a support, a medium-frequency induction heating structure and a rotating tank horizontally arranged on the support, the medium-frequency induction heating structure comprises a hollow copper pipe surrounding the outer ring of the rotating tank, cooling liquid in the hollow copper pipe and a power source connected with the hollow copper pipe, and the rotating tank can rotate on the support; one end of the rotating tank is provided with a feeding assembly and an air inlet pipe, and the other end of the rotating tank is provided with a discharging assembly and an exhaust pipe. The heating device of the horizontal mixed kiln replaces a heating production line of a traditional sintering technology kiln, the occupied area is greatly reduced, energy consumption and loss are lower, the machining time is shortened, and the working efficiency is improved; the rotary tank replaces the labor cost of a sagger of a kiln in the traditional technology, so that the production cost is lower; nitrogen is filled through the air inlet pipe, oxygen in the rotating tank is exhausted through the exhaust pipe, an oxygen-free environment is achieved in the rotating tank, lithium battery powder raw materials are prevented from being oxidized in the heating process, and the quality of lithium battery powder is better.

The present invention provides a non-magnetic tungsten-nickel-iron alloy and a preparation method and application thereof, belonging to the technical field of powder metallurgy. The present invention mixes tungsten powder, nickel powder, iron powder, cobalt powder and manganese powder, and then performs pressing and molding, and finally sequentially performs sintering and vacuum heat treatment to obtain a non-magnetic tungsten-nickel-iron alloy. The present invention controls the Ni / Fe value in the tungsten-nickel-iron alloy to obtain a non-magnetic tungsten-nickel-iron alloy without affecting the overall performance of the alloy, and then obtains a non-magnetic tungsten-nickel-iron alloy with excellent mechanical properties through pressing and molding, sintering and vacuum heat treatment. The results of the embodiment show that the tungsten-nickel-iron alloy prepared by the present invention is non-magnetic, and has a tensile strength of ≥900MPa, a yield strength of ≥670MPa, an elongation of ≥15%, and an impact toughness of ≥100J / cm 2 .

The utility model provides an electric kiln for ferrite sintering, which relates to the technical field of gyromagnetic ferrite sintering and comprises an electric kiln body, a cover plate is hinged to one side of the top of the electric kiln body, a microwave generator is fixed at the bottom of the inner wall of the electric kiln body, and a partition plate is fixed above the microwave generator on the inner wall of the electric kiln body. A microwave guide block is arranged in the middle of the partition plate in a penetrating mode, a supporting rod is fixed to one side of the outer wall of the electric kiln body, and a servo motor is fixed to the top of the supporting rod. According to the device, a servo motor drives a driving gear to rotate, then a driven gear is driven to rotate at a low speed, a driven shaft and a first connecting rod are driven to rotate, a second connecting rod is driven to rotate on a connecting shaft, a material containing frame is always kept at the bottom, and the material containing frame is driven to rotate circumferentially in the electric kiln body; and an object to be sintered in the material containing frame can be in uniform contact with heat, so that the effect of further maintaining uniform sintering is achieved.

The utility model relates to the technical field of high-temperature sintering furnaces, and discloses a high-temperature lifting sintering furnace device which comprises a sintering furnace body and further comprises a base, an inclined concave frame is rotatably arranged at one end of the base, the sintering furnace body is arranged on the inclined concave frame, a feeding port is formed in the sintering furnace body, a rotating arm is rotatably arranged on the base, and the rotating arm is arranged on the base. A rotary arm is arranged on the base, a furnace cover matched with the feeding port is arranged on the rotary arm, a rotary mechanism for driving the rotary arm to rotate is arranged on the base, rolling wheels which are oppositely arranged are arranged on the inclined concave frame, a rotary rail matched with the rolling wheels is fixedly connected to the sintering furnace body, and a rotary driving motor is arranged on the inclined concave frame. A driving wheel is arranged at the output end of the rotary driving motor, annular inner teeth meshed with the driving wheel are arranged on the sintering furnace body, and electric cylinders which are oppositely arranged are rotationally arranged on the base. Compared with the prior art, the utility model has the advantage that the uniform heating effect can be improved.

The invention discloses a preparation method and application of high-compactness copper paste for an external electrode of an MLCC product, and relates to the technical field of external electrode paste. The preparation method of the high-compactness copper paste specifically comprises the following steps: S1, raw material preparation: weighing the metal copper powder, the binder, the organic solvent, the glass powder and the thixotropic agent; preparing for later use; s2, preparing an organic carrier: adding a binder into an organic solvent, and stirring until the binder is completely dissolved to obtain the organic carrier; s3, mixing the copper powder and the glass powder: mixing the metal copper powder and the glass powder, slowly adding the organic carrier, and stirring until the solution is uniform to obtain a mixture A; s4, thixotropic agent adding and mixing, specifically, the thixotropic agent is slowly added into the mixture A, stirring is conducted, and the high-compactness copper paste is obtained; the application process comprises the steps that the high-compactness copper paste is dip-plated to the designated surface position of an MLCC product, sintering is conducted for 1-1.5 h at the temperature of 550-850 DEG C, and an outer electrode is obtained. The external electrode prepared in this way has high compactness.

This invention discloses a method for preparing beryllium-aluminum alloy composite materials, belonging to the field of alloy composite material technology. The method includes: uniformly mixing beryllium powder with an average particle size of less than 18 μm and aluminum powder with an average particle size of less than 48 μm at a mass percentage of 56-66% and 34-44%, respectively, and then loading the mixture into a mold; placing the mold containing the mixed powder into a sintering furnace and performing vacuum pressure-activated sintering to obtain a beryllium-aluminum sintered ingot; and subsequently performing peeling and mechanical processing on the beryllium-aluminum sintered ingot. This invention's method can suppress the growth of beryllium-aluminum alloy particles, resulting in fine and uniform grains, high interfacial bonding strength, good product performance, uniform heating, rapid heating rate, low sintering temperature, short sintering time, and high production efficiency.

The invention provides an electric field enhanced light injection method and device and a battery piece production method and system.The electric field enhanced light injection method comprises the steps that an electric field is applied to a battery piece precursor, the direction of the electric field is in the built-in electric field direction of the battery piece precursor, and the battery piece precursor comprises an N-type doping layer, a P-type doping layer and electrode slurry which are sequentially stacked; meanwhile, the electrode slurry of the battery piece precursor is illuminated, so that by applying an electric field in the direction of the built-in electric field, when light is injected into the battery piece precursor, instantaneous photo-generated current can be generated under the enhancement effect of the electric field, the photo-generated current is transmitted in the electrode slurry to generate instantaneous high temperature, and then auxiliary sintering is achieved.

The utility model discloses a heating cover of a bell jar type electric heating furnace. An electric heating furnace base; the heating cover is arranged on the upper end face of the electric heating furnace base; the partition plate is arranged in the heating cover; the rotating plate is arranged below the partition plate; the plurality of stirring rods are arranged on the lower end surface of the rotating plate in a row; the driving piece is arranged on the upper end face of the interior of the heating cover; the electric push rod is fixedly connected with the output end of the driving part, the telescopic end of the electric push rod penetrates through the partition plate and is fixedly connected with the upper end face of the rotating plate, under the action of the electric push rod, the rotating plate and the stirring rod can be driven to move downwards, the stirring rod makes contact with a sintered product, and meanwhile the output end of the driving part rotates; and an electric push rod, a rotating plate and a stirring rod can be driven to rotate at the same time, so that the stirring rod can stir a sintered product, the product can be uniformly sintered, the sintering quality is improved, and convenience is brought to people.

The invention relates to a saturation treatment method of an auxiliary heating sleeve, a saturated auxiliary heating sleeve and coating equipment. The method comprises the steps that the auxiliary heating sleeve is cleaned and then installed in a heating device, and protective gas is introduced under the constant-pressure condition; the preparation method comprises the following steps: introducing silane with the concentration of 500 sccm to 1500 sccm and ammonia gas with the concentration of 3000 sccm to 7000 sccm, and carrying out first-step deposition for 300 to 400 seconds; 300 sccm to 1300 sccm of silane and 4000 sccm to 8000 sccm of ammonia gas are introduced, second-step deposition is carried out for 50 s to 250 s, and the flow of the silane in the second-step deposition is smaller than that in the first-step deposition; 100 sccm to 1100 sccm of silane and 4500 sccm to 8500 sccm of ammonia gas are introduced, third-step deposition is carried out for 250 s to 350 s, and the flow of the silane in the third-step deposition is smaller than that in the second-step deposition; after vacuumizing, introducing laughing gas under a constant-pressure condition; the laughing gas of 4500 sccm to 5500 sccm and the trimethyl aluminum gas of 40 sccm to 100 sccm are introduced, and the fourth step of deposition is carried out for 100 s to 300 s; and after vacuumizing, introducing protective gas under a constant-pressure condition. The auxiliary heating sleeve subjected to saturation treatment is used in coating equipment for battery passivation, EL black edges caused by auxiliary heating pollution can be reduced, and the yield of batteries is improved.

The application provides a preparation method of a zinc-doped lithium nickel cobalt manganese oxide positive electrode material, and the preparation method comprises the following steps: S1, mixing a nickel source, a cobalt source, a manganese source and a zinc source to obtain a mixed salt solution; S2, in an inert atmosphere, mixing the mixed salt solution and a precipitant solution by simultaneously dropping, continuously dropping the precipitant solution to adjust the pH value of the mixed solution to 10-11, performing a co-precipitation reaction, and obtaining a precursor slurry; S3, adjusting the pH value of the precursor slurry in step S2 to 7-8, performing solid-liquid separation, and drying the precipitate to obtain a precursor; and S4, mixing the precursor in step S3 with a lithium source, and sintering to obtain the zinc-doped lithium nickel cobalt manganese oxide positive electrode material. The method provided by the application can reduce the surface residual alkali content of the positive electrode material, and excellent cycle stability is obtained.

The utility model discloses optical fiber preform sintering equipment which comprises an outer furnace body and an inner furnace core tube, a plurality of heating bodies are fixed to the inner wall of the outer furnace body through connecting pieces and are sequentially arranged in the length direction of the inner furnace core pipe. A sealing cover arranged above the opening in a covering manner is mounted at the top of the outer furnace body; a connecting rod is arranged on the sealing cover in a sealing and penetrating manner; the side wall of the outer furnace body is connected with an outer furnace exhaust pipe, the sealing cover is connected with an inner furnace exhaust pipe, the bottom of the inner furnace core pipe is communicated with an air inlet pipe, and the air inlet pipe penetrates out of the outer furnace body in a sealed mode. The utility model has the advantages that the loose body of the prefabricated rod can be uniformly sintered through the heating bodies, and the unburned bad area of the loose body of the prefabricated rod is improved in a targeted manner; the sintering equipment disclosed by the utility model is a vacuum furnace integrating dewatering and sintering functions, and compared with a traditional double-furnace structure, the occupied space of a furnace body is reduced.

The utility model relates to a sintering device for a filter element carbon rod. The sintering device comprises a heat conducting seat, a plurality of heating rod groups and a heating hole array, the heating hole array comprises a plurality of heating holes, each heating hole is horizontally and sequentially arranged on the heat conducting seat to form a row of heating holes, each row of heating holes are longitudinally arranged on the heat conducting seat to form the heating hole array, and each heating rod group is arranged between each row of heating holes so as to heat the upper row of heating holes and the lower row of heating holes. The sintering device has the advantages of high working efficiency, short sintering time, uniform sintering, good sintering effect and the like, and heat is conducted to the carbon rod for sintering through the heat conducting seat.

The invention discloses a heat treatment device for multi-step sintering of Bi-series superconductive powder, which comprises a rotary furnace tube, bearing furnace tube supports for supporting the rotary furnace tube are arranged at two ends of the rotary furnace tube, a gear ring is arranged at one end of the rotary furnace tube and connected with a gear driven by a motor, and a main heating body is wrapped in the middle of the rotary furnace tube. The two sides of the main heating body are each provided with an auxiliary heating body wrapping the rotary furnace tube, and a detachable powder inner container is installed in the rotary furnace tube. The rotary furnace tube is arranged to be matched with the detachable powder inner container to rotate, the main heating body and the auxiliary heating body are arranged to evenly heat powder in the detachable powder inner container, continuous multi-stage sintering customization is conducted on Bi-series superconducting powder, uniform distribution and the sintering effect of the Bi-series superconducting powder in the sintering process are guaranteed, and the sintering efficiency is improved. And the uniformity of the heating temperature is ensured, the powder filling and sintering efficiency is optimized, and uniform sintering of a large amount of powder becomes possible.

The utility model discloses a lithium iron phosphate dynamic crystallization kiln which comprises a feeding chamber, a sintering chamber and a discharging chamber, the sintering chamber is provided with a sintering cylinder for sintering materials, and the inner wall of the sintering chamber is provided with a heating device; a lifting device for adjusting the gradient of the sintering cylinder is arranged below the sintering chamber; the feeding chamber and the discharging chamber are provided with rotating devices used for driving the sintering cylinder to rotate. The rotating device drives the sintering cylinder to rotate at a constant speed to ensure uniform heating of the lithium iron phosphate precursor in the sintering process and ensure the performance of a finished product; and the lifting device adjusts the inclination of the sintering cylinder, so that sintered finished products quickly and smoothly slide to the material collecting device to be conveniently collected, and meanwhile, the situation that the finished products stay in the sintering cylinder for a long time, excessive sintering is caused, and the performance of the products is affected can be prevented. The device is few in equipment, small in size, high in space utilization rate, low in equipment failure rate and integrated in sintering space, a graphite sagger is not used as a loading body, the production efficiency is improved, material waste is reduced, and the product quality is improved.

The invention discloses a preparation method of chopped carbon fiber reinforced SiC ceramic, and relates to the technical field of novel materials. By adjusting the introduction mode of the ceramic additive, ceramic sintering densification is greatly influenced, boron modified phenolic resin is adopted as the modified phenolic resin, boron can selectively segregate at the silicon carbide grain boundary, the grain boundary energy is reduced, the ratio of the grain boundary energy to surface energy is reduced, and sintering is promoted; meanwhile, the boron element can be dissolved in silicon carbide crystal lattices to generate lattice defects, so that the diffusion coefficient is increased, and the sintering compactness of the ceramic is promoted; carbon can reduce an oxide layer on the surface of the silicon carbide micro-powder, improve the surface energy of the micro-powder and improve the sintering driving force; the modified phenolic resin realizes dispersion of boron and carbon at a molecular level, so that the boron and the carbon can uniformly coat the surfaces of the carbon fibers and the silicon carbide micro powder, the sintering promotion effect of the boron and the carbon is effectively exerted, air holes in the ceramic are favorably removed, and the sintering density of the ceramic is improved.

The invention discloses a micro-environment control system and method for fused deposition modeling of a high-melting-point thermoplastic material. The high-temperature-resistant separated spray head is developed for high-melting-point thermoplastic materials, high-melting-point and high-viscosity materials, the highest heating temperature can reach 500 DEG C, the microenvironment temperature of a spray head area can be dynamically controlled according to the flow rate of thermoplastic wires, meanwhile, the heat load of mechanism movement accessories is reduced through a three-dimensional heat insulation layer, and therefore the mechanical performance is improved. And the requirements on fused deposition molding precision and performance of the thermoplastic high-melting-point PEEK can be met. And the temperature of the forming cavity is accurately controlled to be 185 + / -0.5 DEG C, and control over a wind field is increased, so that the temperature uniformity is improved, warping and deformation generated in the process that materials are converted from a semi-molten state to a solid state in the forming process are reduced, the forming precision is improved, and the printing precision and stability are ensured.

A radioactive nuclide 137 A rapid remediation device and method for Cs-contaminated soil includes an inlet for adding an activator and raw materials, a power supply, a microwave device, an auxiliary extrusion rod, a pressure plate containing a spray head, and a solid pressure plate. The solid pressure plate is located above the pressure plate containing the spray head, and the power supply and microwave device are positioned above the solid pressure plate. A spray head is provided on the pressure plate containing the spray head, and the auxiliary extrusion rod passes through the solid pressure plate and enters the spray head to extrude it. The spray head contains the activator and raw materials, and the auxiliary extrusion rod pushes the activator and raw materials into the soil. This application's solution combines microwave and solidification technologies to achieve remediation of soil containing radioactive nuclides. 137 Advantages of Cs in soil remediation.

The utility model provides a kind of zirconium disc sintering furnace, including sintering furnace, moving mechanism, tray loading mechanism and heating assembly, sintering furnace is set up, and sintering furnace inside has the heating chamber of bottom opening setting, moving mechanism is closed and is set in the bottom of heating chamber, and moving mechanism is movably set along transverse direction, tray loading mechanism is connected on moving mechanism, and tray loading mechanism has multiple tray loading spaces of vertical interval arrangement, heating assembly includes multiple heating unit groups built-in in heating chamber, each side wall of heating chamber is all installed and is connected with heating unit group, each heating unit group includes multiple heating units. Such as using the multiple tray loading spaces of tray loading mechanism can simultaneously load more quantity of zirconia disc, greatly improve sintering efficiency, under the action of moving mechanism, convenient transportation, so that zirconia disc is after being transported to heating chamber by each side wall heating unit group around heating, evenly sinter, guarantee better sintering effect.