13results about How to "Fully sintered" patented technology

The invention discloses a soft magnetic ferrite core processing device, and relates to the technical field of magnet processing. The device comprises a supporting frame, a sintering furnace is fixedly installed at the top end of the supporting frame, the sintering furnace is divided into three areas from left to right, namely a pre-sintering shaping area, a high-temperature sintering area and a cooling area, installation clamping plates are fixedly installed on the adjacent sides of the top of the supporting frame, and a connecting plate is fixedly installed between the middles of the installation clamping plates. In the high-temperature sintering and cooling process, a soft magnetic ferrite core can be turned over, air flowing is accelerated, it is guaranteed that the soft magnetic ferrite core is evenly heated during sintering, the product quality is improved, meanwhile, even iron oxidation during sintering of the soft magnetic ferrite core and even heat dissipation during cooling are facilitated, and the service life of the soft magnetic ferrite core is prolonged. According to the magnetic core sintering device, the requirement for sufficient iron oxidation and cooling is met, the machining efficiency is improved, the soft magnetic ferrite cores are convenient to place and collect, meanwhile, redundant rolling during sintering of the soft magnetic ferrite cores is avoided, and normal sintering is facilitated.

The invention relates to a fly ash sintered material with high fly ash mixing amount and a preparation method and application thereof. The method comprises the following steps: uniformly mixing silicon powder, alkali, water and a dispersing agent, and stirring and reacting at 75-95 DEG C for 4-12 hours to obtain a special silicon aggregate solution; uniformly mixing a sintering aid and the waste incineration fly ash to obtain solid powder, and then putting the solid powder and the special silicon aggregate solution into a forming and granulating device for forming and granulating to obtain formed particles; the waste incineration fly ash is calcined for 0.2-1.2 h in high-temperature treatment equipment at the temperature of 600-900 DEG C, the fly ash sintered material is obtained, the mass fraction of the waste incineration fly ash in the fly ash sintered material is 70-85%, and the mass fraction of the sintering aid is 2-5%; according to the method, the high doping amount of the waste incineration fly ash can be achieved in the fly ash sintering heat treatment process, the sintering temperature can be reduced, and the fly ash sintered material with the heavy metal leaching toxicity reaching the standard and the strength reaching the standard can be obtained by conducting low-temperature sintering treatment on the waste incineration fly ash with the high fly ash doping amount.

The invention discloses a preparation method of low-temperature sintered ceramic. The preparation method comprises the following steps: S1, pretreating kaolin; s2, modifying kaolin; s3, preparing a ceramic green body; s4, preparing a glaze material; and S5, preparing the low-temperature sintered ceramic. According to the low-temperature sintered ceramic provided by the invention, the kaolin is pretreated and modified, and the special grinding aid is added in the preparation process of the ceramic green body, so that the sintering temperature of the ceramic is effectively reduced, the sintering process is optimized, low-temperature sintering of the ceramic is realized, the energy consumption is reduced, and the production efficiency is also improved; the method has remarkable economic benefits and environmental protection significance, and the prepared ceramic has good mechanical properties.

The invention provides a color glazed glass toughening heating section temperature gradient control method, device and equipment and a medium, belongs to the field of electric digital data processing, and is used for controlling a preset toughening furnace. Comprising the following steps: acquiring to-be-heated colored glazed glass; respectively measuring glass parameters, toner parameters, glass powder parameters and screen parameters corresponding to the colored glazed glass; obtaining target information after the colored glaze glass to be tempered is tempered; the target information comprises target flatness and target glaze ripeness; generating production information corresponding to the colored glazed glass according to the glass parameters, the toner parameters, the glass powder parameters and the screen printing plate parameters; generating control information corresponding to the toughening furnace according to the production information and the target information; the control information comprises preheating control parameters, heating control parameters and soaking control parameters; and controlling the toughening furnace according to the preheating control parameter, the heating control parameter and the soaking control parameter in sequence to realize temperature gradient control of the toughening heating section of the colored glazed glass.

The invention discloses preparation equipment and a preparation process of a cobalt-free oxide positive electrode material. The preparation equipment comprises a material conveying mechanism supported by a supporting transmission mechanism, a first-stage multi-point feeding mechanism, a first-stage swing type material spreading mechanism, a first-stage sintering chamber, a first-stage turnover type discharging mechanism, a second-stage multi-point feeding mechanism, a second-stage swing type material spreading mechanism, a second-stage sintering chamber and a second-stage turnover type discharging mechanism are arranged in the extending direction of the material conveying mechanism at intervals. Two interruption positions of the supporting transmission mechanism are connected through the first-stage stepping type driving mechanism and the second-stage stepping type driving mechanism. The preparation process disclosed by the invention is realized based on the equipment, and the first-stage material and the second-stage material are loaded, conveyed, sintered and unloaded through the preparation equipment. According to the invention, the preparation efficiency of the cobalt-free oxide positive electrode material is improved, the waste of the material is avoided, the quality of the product is prevented from being reduced, and manpower and material resources are reduced. The method is suitable for the technical field of preparation of battery positive electrode materials.

According to the patterning annealing method for the trans-structure perovskite battery electrode, the patterning heat insulation sheet is used for applying the high temperature required by annealing to the main grid lines and the fine grid lines, and meanwhile, the perovskite functional layer area is maintained at the low temperature, so that thermal damage is avoided. According to the invention, selective annealing is realized through a physical mode of a light-transmitting area and a heat-insulating area, and the method is an electrode annealing solution which is efficient, uniform, low in cost and easy to integrate to a large-area production line. The annealing time identical to or even longer than that of traditional global annealing is allowed to be used, it is ensured that the silver electrode is fully sintered, the low-resistance, high-adhesive-force and compact electrode is obtained, the large-area xenon lamp is good in illumination uniformity, and the heat insulation sheet with precise positioning is combined; synchronous and uniform annealing of all grid lines of the whole cell can be realized, a high-temperature area is strictly limited in an electrode line fundamentally, the temperature rise of a perovskite layer below is extremely low (can be controlled below 50 DEG C), and the material thermal budget conflict is perfectly solved.

The utility model provides a novel powder metallurgy sintering furnace which is characterized in that a liquid level sensor and a temperature sensor are arranged in a sintering furnace body device, a cold water pipe is arranged at the bottom of a sintering furnace body, an air inlet and an air outlet are arranged outside the sintering furnace body, and a dehumidifier and an air blower are arranged on a ventilation pipeline. An observation window is arranged outside the warm sintering furnace device; according to the warm sintering furnace device, airflow is blown into the device through the air blower, metallurgical solution raw materials are cooled through the cold water pipe, moisture evaporated from the raw materials is removed through the dehumidifier, sintering is achieved through low-temperature evaporation, it is guaranteed that the raw materials are kept in a low-temperature state all the time, and the characteristic that the low-temperature sintering requirement is met is achieved.

The invention relates to the technical field of ferrous metallurgy, and discloses a furnace baking method for a new intermediate frequency furnace, which comprises the following steps: a, adding 1-2 tons of high-carbon ferro-chrome or ferro-nickel into the bottom of the new intermediate frequency furnace, and paving a layer of refractory material with the thickness of 50-100mm on the high-carbon ferro-chrome or ferro-nickel; b, an infrared heater is used for preheating the intermediate frequency furnace, the infrared heater has an adjustable radiation wavelength range, and the temperature rising speed is controlled to be 3-3.5 DEG C / min; c, when the furnace temperature reaches 800-900 DEG C, liquid molten steel preheated to 1400-1550 DEG C is injected into the furnace, and an electromagnetic induction heating system of the intermediate frequency furnace is started at the same time; according to the method, 1-2 tons of high-carbon ferro-chrome or ferro-nickel is added to the furnace bottom, the refractory material is laid on the high-carbon ferro-chrome or ferro-nickel, and the refractory material is preheated before being laid, so that the initial stability of the refractory material is effectively improved, the furnace bottom is protected from high-temperature erosion, and the service life of the furnace is prolonged. And the radiation wavelength range of the infrared heater can better penetrate through the furnace wall, so that the heating efficiency is improved, and the preheating time is shortened.

The application belongs to the technical field of tungsten silicide preparation, and particularly relates to high-purity tungsten silicide and a preparation method thereof, the preparation method comprising the following steps: S1, obtaining silicon powder and nano tungsten oxide, mixing the silicon powder and the nano tungsten oxide, then performing wet grinding, washing and centrifugal separation to obtain a mixed slurry, and the medium for the wet grinding is cyclohexane; S2, placing the mixed slurry in an alumina boat with a cover to perform drying, reduction, calcination and natural cooling to obtain high-purity tungsten silicide. The application uses multiple methods to prevent the oxidation of Si and avoid the generation of silicon oxide; the high-activity tungsten powder obtained by reduction of nano tungsten oxide is used to shorten the calcination time; the sintering of the sample inside and outside is ensured; the high-temperature short-time rapid calcination makes the WSi2 powder loose and not hardened.

The utility model provides a kind of stacked grid laser secondary injection repair equipment, comprising: conveyor belt;Feeding assembly, feeding assembly includes first feeding mechanism and second feeding mechanism in power-off state available;First double laser assembly;Second double laser assembly;Carrying assembly;Rotary table;Feeding assembly, rotary table, discharging assembly are sequentially arranged, and carrying assembly is located in the side of rotary table, to realize the position switching of product between conveyor belt and rotary table.The utility model can be applicable to different sizes of battery piece, and the action contact time of laser and battery piece is increased by four times positioning of different sizes of battery piece by laser, and ohmic contact is better, current is increased, silver silicon microcrystalline is promoted to form, junction is fully fired, and the filling factor of battery piece is improved.

This invention discloses a sodium-ion battery additive, its preparation method, and its application, belonging to the field of sodium-ion battery technology. The invention first prepares a precursor using a high-temperature solid-state method. During the synthesis of the precursor, a transition metal is oxidized from a low-valence state to a high-valence state, providing a basic crystal framework for the subsequent synthesis of the sodium-ion battery additive, ensuring that no impurity phases are generated in the additive. The precursor is then used to prepare the sodium-ion battery additive, introducing Na during this process. 2 O 2 During sintering, decomposition releases oxygen, ensuring an oxidizing atmosphere inside the sealed crucible and maintaining Ni. 3+ The sodium-ion battery has a stable valence state. The sodium-ion additive prepared by this invention has a lower decomposition voltage and a higher irreversible specific capacity. Therefore, adding a small amount of sodium-ion additive to the positive electrode of a sodium-ion battery can provide more additional capacity, thereby significantly improving the energy density of the sodium-ion battery.

The invention discloses a method for preparing a low thermal conductivity microporous refractory material, and relates to the technical field of refractory materials. The invention uses calcium powder, silica fume and other materials as brick blanks of refractory materials, uses polycarbosilane hydrogel to bond two brick blanks, performs secondary sintering, and is assisted by aluminum vapor during the sintering process to form a strength gradient, which can greatly improve the mechanical strength of the refractory material, and the asphalt fiber in the gel has a low melting point and melts before the brick-making mud material at a lower temperature, thereby generating tiny holes in the gel, and the holes are affected by the gravity of the bricks above, so that the holes can penetrate the refractory materials above and below, forming a good fixing effect, and the hydrogel layer forms Si-Mg-C substances during the sintering process, which can effectively enhance the compression resistance of the refractory material and improve the low thermal conductivity of the refractory material. At the same time, the invention adopts a three-layer separation form, which is different from the traditional integral refractory material, and can effectively block heat transfer, thereby achieving low thermal conductivity.

The utility model discloses a high-frequency sintering device for soft magnetic ferrite materials, which comprises a sintering furnace, a top cover is arranged on the upper side of the sintering furnace, a gas chamber is arranged at the bottom of the sintering furnace, and a sintering chamber is mounted in the sintering furnace; the connecting frame is arranged on the upper side of the sintering chamber, a wall scraping structure is arranged on the lower side of the connecting frame, an ignition opening is formed in the outer side of the sintering chamber, a limiting block is arranged at the lower end of the sintering chamber, a protection seat is arranged on the outer side of the limiting block, and a guide rod is arranged on the lower side of the sintering chamber. According to the high-frequency sintering device for the soft magnetic ferrite material, multiple heat sources are arranged in the high-frequency sintering device for the soft magnetic ferrite material, the sintering efficiency of the soft magnetic ferrite material is effectively improved, meanwhile, a wall scraping function is arranged in the high-frequency sintering device for the soft magnetic ferrite material, and the soft magnetic ferrite material is effectively prevented from remaining on the inner wall; and full sintering of the soft magnetic ferrite material is facilitated.