37results about How to "Improve sintering quality" patented technology

The invention relates to the technical field of sintering processes, in particular to a preparation method of low-cost low-carbon sinter, which comprises the following steps: establishing a perfect crude fuel ingredient database; establishing a cost performance evaluation calculation model; controlling the granularity of iron ore powder, solid fuel and flux; associating the cost performance model with batching software through a computer language to obtain crude fuel with high cost performance and sequencing the crude fuel; key parameters of sintering ore burdening are set; and a cloud computing service system is adopted, so that an optimal scheme for automatically optimizing ingredients is realized. The method has the advantages that the effects of reducing the batching cost and reducing the solid fuel consumption are obvious, and the annual benefit is more than 1,500-1,7500 million yuan; secondly, solid fuel is reduced, CO2 emission is reduced annually, and good social benefits are achieved; by means of the modern computer technology, ore blending software is wide in measuring and calculating range, short in period and easy to operate, decision basis is provided for manufacturing enterprises to reduce sinter cost and solid fuel consumption, and sinter quality is improved.

The invention relates to the technical field of ceramic production, in particular to an automatic powder burying device for special ceramic production, which comprises a stamping table, an automatic feeding device and a powder burying table, the powder burying table is arranged on the stamping table, the automatic powder burying device further comprises a plurality of vertical knocking blocks, and the vertical knocking blocks are positioned on the powder burying table; the horizontal knocking blocks are located on the powder burying table, the multiple horizontal knocking blocks are divided into two groups and located on the two sides of the powder burying table respectively, and when the automatic powder burying device for special ceramic production is used, different from the prior art, gaps between powder particles are effectively compressed through knocking, and therefore the powder particles are prevented from being damaged; compared with the prior art, the powder burying table has the advantages that the compactness of the powder is improved, the higher compactness is favorable for reducing pores and defects in the product and improving the mechanical strength of the product, and meanwhile, the knocking effect can promote powder particles to be redistributed in the powder burying table, so that the local gap or accumulation phenomenon is avoided, and the uniform powder distribution is favorable for obtaining more consistent product quality.

The invention discloses a coal gas injection method in a limonite sintering process, which comprises the following steps of: integrally imaging a sintering charge level according to a thermal imager above the charge level of a sintering machine to obtain the predicted temperature of the charge level, and dividing the charge level into a preheating area, a low-temperature reaction area, a medium-temperature reaction area, a high-temperature sintering area and a cooling area according to the predicted temperature of the charge level; blowing coal gas and mist water drops to the preheating area, the low-temperature reaction area, the medium-temperature reaction area, the high-temperature sintering area and the cooling area according to the coal gas injection amount and pressure and the mist water drop injection amount and pressure of the corresponding areas, and sintering; local overheating or supercooling can be avoided, and the sintering quality is powerfully guaranteed; the gas permeability of a material layer can be optimized through partitioned injection of water vapor, gas circulation and reaction development are facilitated, according to different sintering stages, coal gas and fog drop water are injected at a certain flow rate and pressure, various working conditions can be well adapted, solid fuel consumption in the sintering process is reduced, and the sintered ore yield is increased.

The utility model discloses a sintering furnace for alloy material production, which comprises a sintering furnace main body shell, supporting legs and a sintering furnace door, an exhaust component is arranged on the sintering furnace door in a penetrating manner, the exhaust component comprises an air inlet pipe, and one end of the air inlet pipe close to a rotating component penetrates through the sintering furnace door and is fixedly communicated with a separation net. The rotating assembly is fixedly communicated with a gas inlet pipe, one end, far away from the rotating assembly, of the gas inlet pipe is fixedly communicated with a filter chamber, and the upper end of the filter chamber is fixedly communicated with an exhaust pipe. When the device is used, irritant gas generated in the alloy material production process enters the gas inlet pipe, and harmful substances in the gas are filtered out when the gas passes through the filter chamber; and the filtered gas is exhausted through the exhaust pipe, so that irritant harmful gas is prevented from hurting human bodies and polluting the environment.

The invention discloses a stable adjusting method for the material thickness of a circular cooler and related equipment, and relates to the technical field of industrial control, and the method comprises the steps that the speed of the circular cooler, the speed of a sintering machine and a target cooling ratio are obtained; calculating according to the speed of the circular cooler and the speed of the sintering machine to obtain an actual cooling ratio; comparing the actual cold burning ratio with the target cold burning ratio to obtain a comparison result; and controlling the material thickness of the circular cooler according to the comparison result.

The invention belongs to the field of steel smelting, and particularly discloses a scalable umbrella rib type supported fuel gas injection device and a control method thereof. The device comprises a gas pipe, a blowing pipe, a blowing cover and a push-pull device. The blowing cover comprises a plurality of parallel supporting frames, telescopic rods connected with the adjacent supporting frames and foldable cover bodies connected with the adjacent supporting frames, and end plates are arranged at the two ends of the blowing cover. The injection pipe fixedly penetrates through the top of the cover body and is communicated with the gas pipe, and gas enters the material layer through the injection pipe. The injection cover sliding rails are arranged on the two sides of the sintering trolley correspondingly, the push-pull device drives the two ends of the injection cover to slide along the injection cover sliding rails correspondingly, space can be vacated for maintenance, and the fuel gas injection starting point position and the fuel gas injection covering length can be adjusted. According to the method, by controlling the fuel gas injection starting point position, the fuel gas injection coverage length and the fuel gas injection amount, the optimal production working condition can be guaranteed, and the production quality is improved.

The invention relates to a device and a method for improving air permeability of a thick bed by utilizing biomass fuel. The device comprises a T-shaped frame and a cross rod, the T-shaped frames are arranged in a bilateral symmetry mode, and the horizontal ends of the T-shaped frames face downwards. The cross rod is correspondingly and fixedly connected between the upper portions of the vertical ends of the T-shaped frames on the two sides. The method comprises the following steps: S1, preparing hydrogen-rich biomass; s2, forming the biomass combustion rod; and S3, sintering application. According to the invention, biomass which is a renewable clean resource is reinforced and applied to the field of sintering production, so that carbon emission is effectively reduced, and dependence on carbon-containing fuel in the sintering process is reduced; and meanwhile, the matching device can effectively improve the material layer air permeability in the thick material layer sintering process, and the effects of increasing yield and reducing consumption are achieved.

The present invention discloses a method for predicting the drum strength of sintered ore of each material layer of a sintering trolley. First, a sintering cup experiment is performed under different process conditions based on the raw materials produced by the trolley to obtain different sintered ores, and then a drum strength test is performed. At the same time, the porosity, typical mineral content, and typical mineral microscopic mechanical properties of the sintered ore are tested and analyzed, and a quantitative relationship model between the porosity, typical mineral content, and typical mineral microscopic mechanical properties of the sintered ore and the drum strength of the sintered ore is established; then the porosity, typical mineral content, and corresponding mineral microscopic mechanical properties of the sintered ore samples to be tested of each material layer of the sintering trolley are substituted into the first quantitative relationship model, so as to predict the drum strength of the sintered ore samples to be tested. The present invention establishes a method for predicting the drum strength of each material layer of a sintering trolley, and realizes the rapid acquisition of the drum strength of sintered ore in different areas of the sintering trolley through microsampling and micro-testing.

The invention discloses a high-efficiency selective laser sintering method, which comprises at least one mixture of raw material powder including a low-melting-point binder and at least one laser beam for selective laser sintering; the melting point of the binder is m p , the decomposition temperature is b p , so that the laser beam irradiates the raw material of the mixture, the highest temperature of the raw material rises to T, the duration of the temperature is t, and the following conditions are met: #imgabs0# and m p <T<b p , t>0; this method allows the temperature of a larger range of raw material powder to be maintained in the range from melting point to decomposition point for a certain period of time, while making the temperature distribution and gradient tend to be uniform, so that the residual stress and deformation after laser sintering are smaller; and the beam irradiation with a larger irradiation area also ensures the improvement of laser sintering efficiency.

The utility model relates to a sintering machine tail chute waste heat recovery system which structurally comprises a trolley conveying device, a crusher arranged at the tail end of the trolley conveying device, a tail chute arranged at the tail end of the trolley conveying device and below the crusher, and a waste heat recovery water tank arranged below the tail chute. The waste heat recovery water tank is communicated with a water inlet pipe, and the waste heat recovery water tank is communicated with a sintering raw material mixer of a mixing workshop through a water outlet pipe. Sensible heat of sintering ore is recycled to the maximum extent, normal-temperature water is heated into hot water, the hot water is conveyed to a sintering raw material mixer of a sintering mixing workshop to be added into raw materials, the temperature of the sintering raw materials is increased, fuel consumption of sintering production is reduced, the quality of sintered ore is improved, the environment temperature of a tail chute is improved, and the service life of the sintering ore is prolonged. And energy wasted in sintering production is recycled.

The utility model relates to the technical field of sintering equipment, in particular to high-temperature sintering equipment for a porous wear-resistant membrane, which comprises a bottom plate, the device further comprises a first pump body, a first gas pipe, a second gas pipe, a gas analysis box, a conveying pump and a conveying pipe, the sintering box is installed on the upper end surface of the bottom plate, the first pump body is installed on the upper end surface of the sintering box, and the front end of the first pump body is connected with one end of the first gas pipe; after the first pump body is started, air in the center of the sintering box is extracted through the first air pipe and then injected into the sintering box through the second air pipe, so that a rotary flowing air mode is formed in the sintering box, air originally far away from the sampling mechanism can be sampled when the air is sampled, more representative air samples can be contacted, and the sampling efficiency is improved. The gas analysis is more accurate, the sintering quality and consistency are improved, the capability of monitoring the gas generated in the sintering process is enhanced, meanwhile, the atmosphere distribution can be uniform, and the product quality difference caused by non-uniform temperature and atmosphere is reduced.

The application discloses a kind of double-fan sintering machine group single-fan operation thick material layer sintering device and method, belong to metallurgical sintering technical field.The technical scheme of the present application mainly includes: first isolation stops fan and adjusts valve baffle to complete flue gas flow balance, optimizes raw material ratio and moisture to reduce material layer resistance, adopts double-layer loose material to improve ventilation condition, time-sharing period dynamic adjustment fan air pressure adapts sintering process, combined with whole system air leakage control and sintering endpoint linkage regulation and control, without modifying main equipment can realize 800-920mm thick material layer stable sintering.The present application solves the problem of insufficient air volume, uneven airflow distribution, uneven thick material layer sintering, large operating condition fluctuation and high energy consumption when the double-fan sintering machine group operates with single fan, can improve the quality of sintered ore, reduce production energy consumption, and ensure continuous operation of production line during equipment maintenance and fault period.

The invention provides a medical ceramic high-frequency electrotome and particularly provides a preparation method and application of medical high-frequency conductive ceramic, by adding a conductive phase into a ceramic base phase, controllable alternating-current impedance and intrinsic hydrophobic characteristics are achieved, good high-frequency cutting and blood coagulation effects can be achieved, heat damage is reduced, and tissue adhesion in cutting is reduced. And in the sintering process, the mechanical property after sintering is improved by adopting a manner of distributed pressurization and mixed organic acid addition, and the machinability of the ceramic is improved.

The invention discloses a silver nano soldering paste low-temperature sintering device of a semiconductor chip, which belongs to the technical field of semiconductor chip processing and comprises a box body, a heating table, a sucking pump, a box door, a first gas transmission mechanism, a second gas transmission mechanism and a gas circulation mechanism. According to the silver nano soldering paste low-temperature sintering device of the semiconductor chip, the first gas transmission mechanism and the second gas transmission mechanism are arranged, in the sintering process, nitrogen serves as a protective atmosphere, silver nano particles can be prevented from being oxidized, poor compounds such as silver oxide are prevented from being formed on the surface of the soldering paste, and the conductivity and the bonding force of a welding contact surface can be reduced due to oxidation; therefore, the welding quality is influenced; the hydrogen has a reduction effect at high temperature, can reduce existing oxides on the surface of the silver nano soldering paste, helps welding and fusion of silver particles, and ensures better welding quality.

The utility model relates to the technical field of iron alloy smelting, and discloses a sintered chromite preparation device which comprises a supporting frame, a disc pelletizer is fixedly connected to the upper surface of the supporting frame, a feeding port is formed in the disc pelletizer, a vertical planetary mixer is arranged above the disc pelletizer, and a discharging port is formed in the vertical planetary mixer. The outer wall of the vertical planetary mixer is fixedly connected with a feeding box, the lower surface of the vertical planetary mixer is fixedly connected with a discharging barrel, the outer wall of the vertical planetary mixer is fixedly connected to the outer wall of the supporting frame, one end of the disc pelletizer is fixedly connected with a first feeding pipe, and one end of the first feeding pipe is fixedly connected with a briquetting machine. According to the device, the vertical planetary mixer, the disc pelletizer, the briquetting machine and the preheating assembly are matched with one another, so that the problems that the sintering yield is low and the energy consumption is high when the device works, and the sintering effect is affected due to the poor preparation process before the sintering procedure are solved, and the effects of reducing the energy consumption and improving the sintering quality are 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 utility model relates to battery piece sintering equipment which comprises a base, a transmission mechanism, a protection cover, a probe assembly and a laser, the base is provided with a material bearing table used for bearing battery pieces, and the transmission mechanism is used for transmitting the battery pieces to be sintered to the material bearing table and moving the sintered battery pieces away from the material bearing table. The protection cover is arranged above the base in a lifting mode, when the protection cover descends to abut against the base, a sealing cavity is defined by the protection cover and the base, the material bearing table is located in the sealing cavity, the sealing cavity is used for introducing process gas to provide a sintering atmosphere for battery pieces on the material bearing table, and the laser is located above the material bearing table; the probe assembly is used for applying reverse bias voltage to the battery piece in the sealing cavity. According to the battery piece sintering equipment, the protection cover descends to the position, abutting against the base, of the sealing cavity, so that the stability of the concentration of process gas when the battery piece is sintered in the sealing cavity is guaranteed, the sintering quality of the battery piece is improved, and then the conversion efficiency of a solar battery is improved.

The invention discloses a wet-type plastic material for a copper smelting system and a preparation method thereof, and the wet-type plastic material for the copper smelting system comprises the following raw materials in parts by weight: 60-70 parts of a particle mixture, 35-45 parts of a fine powder mixture, 10-18 parts of a composite plasticizing solvent, 5-12 parts of a binding agent and 0.5-3 parts of an anti-explosion agent. The preparation method of the wet-type plastic refractory for the copper smelting system comprises the following steps: firstly, preparing the particle mixture, the fine powder mixture, the composite plasticizing solvent and the binding agent, then uniformly stirring the raw material mixtures, and mixing and grinding the raw material mixtures into cement. The plastic material has the advantages of high strength, wear resistance, thermal shock resistance and good corrosion resistance, the physical properties of the plastic material are effectively improved, cracks are not easy to generate, and the service life is effectively prolonged; and construction is convenient, long-time storage can be achieved, the maintenance frequency and loss of the copper melting furnace lining can be reduced, and production economic benefits are improved.

The invention belongs to the technical field of gas diffusion layer production, and mainly relates to a porosity-controllable gas diffusion layer production process which comprises the following steps: pretreating a plurality of titanium mesh rolls; the titanium mesh rolls are arranged in a laminated mode and fixed together through a pre-positioning device, so that a continuous multi-layer titanium mesh structure is formed, and then SPS low-temperature pre-pressing sintering is conducted; blanking a plurality of layers of titanium meshes into titanium mesh blanks, smearing solder resist, and then stacking the titanium mesh blanks; the titanium mesh blank is continuously conveyed into a continuous furnace to be welded, and a gas diffusion layer is obtained; and post-processing the welded gas diffusion layer, scanning to detect the thickness of the gas diffusion layer, and finally packaging. The multi-layer titanium mesh roll is firstly stacked to form a multi-layer structure, the multi-layer structure is blanked into a plurality of layers, then the multi-layer structure is stacked again, then the titanium mesh blank is continuously conveyed into the continuous furnace, the titanium mesh blank is welded in the continuous furnace, and a large amount of production time is saved, so that the production efficiency of the gas diffusion layer can be improved, and the rate of finished products is increased.

The utility model relates to sintering processing technical field especially relates to a kind of sintering frock of silicon carbide ceramic crystal boat, including base, intermediate support plate, first backing plate and backing plate etc., the upper side of base middle part is connected with left and right two intermediate support plates, the first backing plate is placed in the front and rear two parts of intermediate support plate, the first backing plate is placed with backing plate uniformly.This utility model is fixed with the contact and fixation of first limiting plate and first limiting base and base, then install first backing plate and second backing plate etc., then the crystal boat body is placed on backing plate, and is fixed after contact with backrest, then install adjusting limiting plate, and then push adjusting compression plate and move to the crystal boat body limiting, to be able to quickly position, clamping and support to crystal boat body, it is convenient for crystal boat body quick fixation, prevent crystal boat body displacement or wobble in sintering process, reduce deformation and crack, improve sintering quality.

The invention relates to the technical field of sintering furnaces, and discloses a dewaxing sintering furnace and a dewaxing sintering method. The dewaxing sintering furnace comprises a furnace shell, a ventilation system, a material box, a dewaxing system and a material moving mechanism. The furnace shell comprises a sintering chamber with a heating hearth and a storage chamber communicated with the sintering chamber. The ventilation system communicates with the sintering chamber and is used for adjusting the pressure in the sintering chamber. And the material box is arranged in the heating hearth. Workpieces are placed in the material box. The material box comprises a wax discharging opening. The dewaxing system is communicated with the dewaxing opening and used for pumping and discharging pollutants generated in the workpiece dewaxing process. The material moving mechanism is used for driving the material box to move between the material storage chamber and the heating hearth. According to the device, the material moving mechanism drives the material box to move between the material storage chamber and the heating hearth, workpieces can be protected, and through the synergistic effect of the material box, the ventilation system and the dewaxing system, the sintering quality of the workpieces can be improved, and pollution of pollutants to the sintering chamber can be prevented or reduced.

The present application relates to the technical field of metallurgy, and discloses a kind of iron ore powder sintering reaction performance evaluation method and system, to solve the problems of fragmentation, strong experimental dependence, unable to measure key parameters and poor dynamic adaptability of existing method, scheme mainly includes: obtaining the chemical composition of the iron ore powder to be evaluated, and normalizing processing;Using the Equilib module of FactSage, the results under different temperature conditions are calculated when the reaction equilibrium is obtained;Extract liquid phase production, liquid phase chemical composition and reaction enthalpy data;And using the Viscosity module of FactSage, the liquid phase viscosity under different temperature conditions is calculated;Select the liquid phase production, reaction enthalpy and liquid phase viscosity under a certain temperature as evaluation parameters, carry out vector normalization processing and set weight, use TOPSIS multi-criteria decision method, respectively calculate the relative closeness of each group of evaluation parameters;Relative closeness is used as the evaluation index of iron ore powder sintering reaction performance.The present application improves the accuracy and efficiency of sintering reaction performance evaluation.

The present invention belongs to the technical field of powder metallurgy sintering, and specifically is a powder metallurgy sintering device for processing a mobile phone middle frame, comprising a sintering furnace, the sintering furnace comprising a heating chamber and a cooling chamber, a mesh belt conveyor being arranged between the heating chamber and the cooling chamber, and an output end of the sintering furnace being provided with a feeding mechanism for feeding the mobile phone middle frame and a sintering tray; the feeding mechanism comprises an air pump connected to the side wall of the cooling chamber, and an output pipe being connected to the output end of the air pump. The present invention achieves the purpose of slowing down the falling speed of the mobile phone middle frame by blowing air upward along the inside of a guide plate, and avoids the mobile phone middle frame being scratched due to a large impact when falling into a collection box, thereby protecting the mobile phone middle frame and improving the overall sintering quality; and also simultaneously removing a small amount of residual impurities on the sintering tray during the process of recycling the sintering tray, and avoids the trace impurities on the sintering tray affecting the sintering quality of the mobile phone middle frame, thereby jointly improving the sintering quality of the mobile phone middle frame.

The utility model relates to the technical field of soft magnetism, and discloses sintering equipment for producing soft magnetic ferrite particles, which comprises a cooling assembly, a sintering assembly is arranged in the cooling assembly, and the top of the sintering assembly is connected with a stirring assembly. Splashing and dissipation in the feeding and running process of materials can be effectively prevented, a cooling medium is introduced into the closed cavity in the sleeve through the water inlet pipe, the heat dissipation efficiency is effectively improved, the sintering uniformity is remarkably improved through the heating pipes which are combined in the sintering cylinder and distributed in the circumferential direction, and the service life of the sintering cylinder is prolonged. The materials fed from the feeding hopper are flattened through mechanical rotation and then fed into the sintering cylinder, so that the materials are prevented from being stacked into blocks or unevenly distributed in the sintering cylinder, impurities carried in the fed materials can be prevented from influencing the sintering quality, and the materials are continuously stirred through cooperation with a triangular stirring rod at the bottom of a rotating rod; the heat can be uniformly transferred to different heating surfaces of the material, so that the sintering quality is further improved.

The invention discloses a material loosening device, a sintering cup and a sintering test method, the material loosening device comprises: a frame, which is circumferentially provided with a plurality of mounting parts at intervals, and the outer diameter of the frame is smaller than the inner diameter of the sintering cup; the plurality of material loosening rods are movably connected to the mounting part, each material loosening rod comprises a plurality of material loosening sections, and the plurality of material loosening sections are movably connected in the length direction of the material loosening rods. According to the device, the height and density of the material loosening rods are adjustable, so that a tester can construct a gradient or differentiated ventilation structure in the sintering cup, the air permeability change caused by factors such as non-uniform material distribution and different compaction degrees in industrial production is simulated, the controllable adjustment of the air permeability of a mixture in the sintering process is realized, and the test efficiency is improved. A direct and accurate experiment basis is provided for structural optimization and operation parameter adjustment of the industrial field loosening device, the sintering ore quality is improved in an assisted mode, solid fuel consumption is reduced, and the energy utilization efficiency is improved.

The utility model belongs to the technical field of semiconductor packaging, and particularly relates to a detachable power module sintering pressure head. The detachable power module sintering pressure head comprises a pressure base used for being connected with a pressure driving mechanism; the pressing blocks are detachably connected with the pressure base; wherein the pressing block is provided with a plurality of bosses used for being in contact with a chip. The part for providing pressure and the part for contacting the chip of the sintering pressure head are detachably connected, so that the application universality is greatly improved, and the cost is reduced. And for different chip layouts and DBC sizes, only the design of the detachable pressing block needs to be changed, and the pressure base does not need to be changed, so that the cost and the flexibility of a production line are reduced. The boss of the contact chip or the DTS copper sheet can be designed according to the layout of the chip, on one hand, the application is more flexible compared with an independent pressure head, on the other hand, the stress on the chip is more uniform compared with an integrated pressure head, and the sintering quality is better.

The invention relates to the technical field of aluminum-based composite material preparation, in particular to a ceramic reinforced aluminum-based workpiece and a preparation method. The ceramic reinforced aluminum-based workpiece is prepared by the method. The method comprises the steps that a forming die is assembled and filled with aluminum-based composite powder; sintering the forming die filled with the aluminum-based composite powder in an inert atmosphere to obtain a sintered green body; performing die forging treatment on the sintered green body to obtain a prefabricated green body; and after the prefabricated blank is machined to the size of a finished product, the prefabricated blank is sequentially subjected to solution treatment and aging treatment, and the ceramic reinforced aluminum-based workpiece is obtained. By means of the method, the ceramic reinforced aluminum-based workpiece with the large length-diameter ratio can be prepared, and the problems that cracks are generated when a formed blank is not separated from the female die, and layering and fragmentation are generated in the demolding process are solved.

The utility model relates to the technical field of ferrous metallurgy, and discloses a sintering pallet cleaning device which comprises a support. The number of the rollers is two, the ends, close to each other, of the two rollers are coaxially connected, the ends, away from each other, of the two rollers are rotationally connected with the support, and the circumferential faces of the two rollers are each provided with a plurality of brush sets arranged in the length direction of the rollers at intervals; each brush group comprises a plurality of brushes which are uniformly arranged in the circumferential direction of the roller; and the driving assembly is used for driving the two rollers to rotate synchronously. According to the utility model, accumulated materials on the surface and gaps of the grid section are automatically cleaned, so that the pasting and blocking of the grid section are relieved, the manual cleaning frequency is reduced, the service life of the grid section is prolonged, the consumption of the grid section is reduced, and the sinter quality is improved.

The present invention belongs to the field of semiconductor technology, and specifically relates to a copper-based composite solder paste, a preparation method and application thereof. The copper-based composite solder paste comprises: nano-scale copper powder, micron-scale doped modified diamond powder, titanium powder, additives, solvents and resins. The copper-based composite solder paste of the present invention, by adding micron-scale doped modified diamond powder (i.e., doping and modifying micron diamond), can allow doping atoms such as boron, sulfur, nitrogen, phosphorus and magnesium to penetrate into the micron diamond lattice, which helps to improve the electrical conductivity, and the improvement of the electrical conductivity helps to reduce the heat generation power of the solder layer, thereby improving the thermal conductivity and high-temperature stability of the semiconductor device.

The utility model discloses a system for uniformly sintering in a transverse area. The system comprises a sintering machine, a sintering stock bin, a multi-section type blanking adjusting auxiliary door, a machine tail section temperature detection device and an ignition furnace. By arranging the tail section temperature detection device to cooperate with the multi-section blanking adjusting auxiliary door, the sintering industry and mining of the section of the tail material layer of the sintering machine can be monitored and fed back in real time, so that a basis is provided for differential material distribution of the multi-section blanking auxiliary door, the fluctuation of the transverse sintering rate of the sintering material layer is reduced or even eliminated, and the quality of sintered ore is improved. Therefore, fluctuation of the transverse sintering rate of the sinter bed is reduced or even eliminated, and the sinter quality is improved. In addition, the device has the advantages of being simple in structure, high in adjusting precision and flexibility, low in equipment investment cost, high in practicability and the like, and has the good prospect of large-scale popularization and application.