1076results about How to "Improve heating uniformity" patented technology

The invention discloses a device for controlling the delivery and the uniform distribution of reaction gas in a MOCVD reaction chamber. By respectively controlling the flow of gas passages non-uniformly distributed radially on a front gas homogenizing plate and input passages at different positions, at least two reaction gases are respectively introduced into two paths which are radially and axially crossed on a spray header, and can be secondarily distributed by nozzles in different shapes, so the uniformly distributed boundary layer concentration, speed and temperature required are achieved on the surface of a rotary epitaxial wafer, the quality of massively produced epitaxial films and the finished product ratio of massively produced epitaxial wafers are improved, the consumption of expensive reaction gases can be effectively controlled and the epitaxial production cost is reduced. By properly increasing the distance between the surface of the spray header and the epitaxial wafer, deposits generated on the surface of the spray header and the nozzles in the epitaxial growth are reduced, the cleaning period is prolonged, and the production efficiency and system capacity are improved. The device also can reduce the processing difficulty and manufacturing cost of the nozzles of the spray header and cooling medium passages.

The invention relates to a heating device for improving heating quality of steel billets and a using method thereof. The heating device comprises a heating furnace, a heat storage system blower, a flat flame system blower, a combustion-supporting air pipeline, a gas pipeline, a heat storage system draught fan, an air heat exchanger, a gas heat pipe exchanger, a smoke exhaust pipeline and a chimney. 2-4 ignition burners are arranged at a preheating section of a heating furnace, and 12-30 pairs of heat storage type burners and 4-12 flat flame burners are respectively arranged at a heating section and a soaking zone. The using method comprises the following steps of reasonable distribution of combustion-supporting air and gas flow rate of the heat storage type burners and the flat flame burners, sectional configuration of furnace temperature and heating time, preheating of combustion-supporting air and gas temperature through a high-temperature smoke gas and furnace tail gas in grades, alternative furnace feeding of cold and heat steel billets, intermittent movement of the steel billets, and vaporization cooling of the steel billets. The flow field in the furnace is modified through the system, the optimal configuration of flow rates of air and gas in the burner is realized through reasonable arrangement of gas and air pipeline systems, and the waste heat of high-temperature smoke gas of the heating furnace is gradiently utilized, thus the in-furnace time is shortened, the uniformity of heating the steel billets is improved, and the high-efficiency heating of the steel billets is realized.

The invention relates to a preparation process and a device of a nano-particle reinforced bimetal composite, the nano-particle reinforced bimetal composite comprises the following chemical components by weight percent: 6-25% of Cr, 4-18% of Ni, 1.0-4% of Mo, 1.0-1.8% of Si, 1.2-3% of Mn, 0.4-2.2% of B, 0.1-1.2% of MgO, 0.2-2% of CaF2, 0.2-0.7% of C, 0.2-0.8% of Nb, not more than 0.9% of one or the combination of CeO2, Y3O2 and La2O3, 0.0-0.8% of Co, and the balance of Fe, and mixed particles of nano-sized carbides, nitrides, borides or carbonitrides are added in alloy powder. The vacuum induction melting and the cladding processes and equipment are adopted for melting and cladding the mixture on a workpiece, the thickness of a cladding layer is 0.1-25mm, the cladding layer contains 1%-50% of nano-reinforcing particles of one or the combination of the carbides, the nitrides, the borides and silicides, and the cladding layer has special performances of wear resistance, corrosion resistance, electrical conductivity, self-lubrication performance and the like. A coating layer and a base material form the metallurgical bonding, thereby having high bonding strength, overcoming the drawbacks in various coating processes at home and abroad, leading the coating layer to avoid the defects of shrinkage cavities, inclusion, cracking, shedding and the like and having the advantages of high heating temperature, fast speed, high production efficiency, small energy consumption, simple preparation process and low cost.

The invention discloses a low-voltage transparent electrothermal film, including a transparent base material, a transparent conducting layer and electrodes. The transparent conducting layer is formed on at least one side of the transparent base material; the electrodes are formed by bus bars and inner electrodes, and the inner electrodes extend oppositely from the bus bars to form interdigital electrodes; the bus bars are connected with a positive electrode or a negative electrode of a power supply, so that the two adjacent inner electrodes are opposite in polarity, and in energization, current provided by the positive electrode bus bar flows from the positive inner electrodes into the corresponding negative inner electrodes and finally all converges into the negative electrode bus bar; and the electrodes are located on the transparent conducting layer and is in electrical contact with the transparent conducting layer. The low-voltage transparent electrothermal film is provided with the bus bars and the inner electrodes, an interval of two electrodes is reduced to enable resistance of the transparent conducting layer between the two electrodes to be reduced, thus low voltage can be used to supply power, and normally, the low-voltage transparent electrothermal film can be heated to 90 to 180 DEG C rapidly by adoption of voltage of a lithium battery of everyday use. Two sets of electrodes can be arranged on two sides of graphene, and the inner electrodes of the two sets of electrodes are staggered at a certain distance, thereby further ensuring heating uniformity, and improving heating temperature under the same low voltage.

The invention provides a technology for processing high strength large hexagon-headed bolt used for steel structure. The invention relates to a technology for processing high strength connecting piece. High frequency induction current hot forging and cold extruding are adopted, so as to produce a bolt. The invention is on the basis of patent application with patent application number of 200810020090.5, high frequency induction heating is adopted in hot forging, frequency thereof is controlled to be 20000-50000Hz, and the advantages of high frequency induction heating that speed is fast and heating is uniform are utilized, so that work piece surface can obtain uniform tissue and properties from center part to the surface, heating uniformity of work piece is improved, better crystal phase structure can be obtained, and high strength bolt with better property can be obtained.

The invention discloses a manufacturing process for a lambdoidal control arm. The manufacturing process comprises the following steps of: sawing an extruded bar; heating the extruded bar; rolling and forging the extruded bar to form a blank; bending to form the blank; preforming a forged die; finally forming the forged die; and trimming the forged die. In the manufacturing process, the extruded bar is taken as a raw material; the blank is heated to 440 DEG C-480 DEG C through electric induction; the blank is rolled and forged twice by a forging roll to realize volume distribution; the processes of bending to form the blank, preforming the forged die and finally forming the forged die are carried in sequence; and the trimming process is carried out in a thermal cutting manner. Compared with the prior art, a repairing process and a secondary heating process are reduced, the processing steps for the lambdoidal control arm are simplified, production cost for the product can be lowered, production rate can be increased, and product performances can be ensured.

The invention relates to a soft magnetic core used for a high-power inverter power supply, and a manufacturing method thereof. The magnetic core is made of an Fe-based amorphous nano-crystalline belt material through winding , and comprises components according to weight percentages as follows: 81%-85% of Fe, 0.01%-5% of Co, 7%-9% of Si, 1.5%-2.5% of B, 1%-2% of Cu, 4%-7% of M, and 0.001%-0.04% of M', wherein M is one or more of Nb, Mo, V, W and Ta, and M' is at least one of Al and Ti. The magnetic core is subjected to anneal in a protective atmosphere or a vacuum; when in anneal, the position of the magnetic core in a furnace is movable or rotatable, a holding temperature is 520-600 DEG C, the holding time is 1-2 hours, and a temperature rise speed is 100 DEG C per hour. The magnetic core manufactured by adopting the method has lower loss, better manufacturing technique properties, and good soft magnetic characteristics; moreover, the downstream processing after the heat treatment is applicable to various technique methods.

The present invention relates to carbon material pyrolyzing and dry distilling technology, and is especially one kind of microwave drum dry distiller and its application in dry distilling and pyrolyzing oil shale. The microwave drum dry distiller includes one microwave oven, and one inner screw drum on supporting rolls. The inner screw drum set on the microwave oven has material inlet, slag discharging barrel, gas exhausting pipe, and discharging port connected to the spiral conveyer. Granular oil shale entering to the microwave oven spirally through the inner screw drum absorbs microwave for dry distilling and pyrolysis so as to produce shale oil, fuel gas and semi-coke. The present invention has simple structure, convenient operation, fast dry distilling, high energy utilizing rate, environment friendship and other advantages.

The invention discloses a hot-bending forming machine for mobile phone glass and watch surface covers. The hot-bending forming machine comprises a rack and an operation console, wherein a forming part is arranged on the rack and comprises a forming bin, mold preheating mechanisms, a forming mechanism, a shaping mechanism, mold precooling mechanisms and a mold first cooling mechanism are sequentially arranged from an inlet end to an outlet end in the forming bin, and a forking and conveying mechanism for conveying a mold to each mechanism is arranged on the back side of the forming bin; a transition bin is arranged outside the inlet end of the forming bin, a mold feeding mechanism is arranged in front of the transition bin, a mold pushing mechanism is arranged on the outer side of the transition bin, and a first mold preheating mechanism is arranged in the transition bin; a discharging bin is arranged outside the outlet end of the forming bin, a second mold cooling mechanism is arranged in the discharging bin, a discharged material pushing mechanism is arranged on the back side of the discharging bin, a secondary cooling mechanism is arranged in front of the discharging bin, and a discharging cooling and conveying mechanism is arranged on the outer side of the secondary cooling mechanism. The hot-bending forming machine for the mobile phone glass and the watch surface covers has the advantages of uniform heating effect, good production continuity, high production efficiency and the like.

The invention provides novel electric heating paint and a preparation method thereof. Ink is prepared from, by mass, 10-20 parts of graphite, 2-10 parts of conductive carbon black, 10-15 parts of carbon nanotube dispersion liquid, 7-15 parts of graphene dispersion liquid, 0.5-2 parts of silicon carbide whiskers, 0.5-2 parts of tin oxide, 0.5-2 parts of ferronickel spinel, 16-37 parts of water-based resin linking agent, 20-40 parts of water and 2.3-8 parts of addition agent. The invention relates to an electric heating sizing agent containing the conductive composition and a preparation methodthereof. In addition, the conductive ink has the advantages of being high in heating uniformity, electricity-heat conversion efficiency and heating speed, light, good in flexibility, high in adhesiveforce, good in weather resistance and aging resistance, high in safety, environmentally friendly and the like, can be used as heating products for buildings and can also be processed into various electric heating products.

The invention provides automatic dispensing equipment. The automatic dispensing equipment comprises an equipment console, wherein a dispensing mechanism, a triaxial correcting mechanism, a feeding mechanism, a discharging mechanism and a transferring robot are arranged on the equipment console; the conveying starting end of the feeding mechanism is located in the material swinging area, and the conveying tail end of the feeding mechanism is located in the feeding area; the conveying starting end of the discharging mechanism is located in the feeding area, and the conveying tail end of the discharging mechanism is located in the material taking area; and the dispensing and transferring track of the transferring robot is programmed by an off-line programming software, and the working range of the feeding area at least covers the feeding area and the discharging area. The dispensing mechanism, the feeding mechanism and the discharging mechanism are integrated on the same device, and a six-axis transfer robot is adopted for grabbing products to carry out dispensing operation, so that the dispensing quality and efficiency can be improved, and the automatic dispensing equipment can be applied to dispensing of a space curve track, such as coating hot melt adhesive between a mobile phone screen and a middle frame gap, so that the protection level of a mobile phone can be improved, andabattery back cover of a hyperboloid screen phone can be subjected to hot melt adhesive operation and the like.

The invention relates to a micro-nano-alloy bimetal composite material preparation technique and a device thereof; one of wear-resistant and corrosion-resistant ferrous metal material, non-ferrous metal material and various self-fluxing alloy is prepared into power; then, the powder is added with less than or equal to 0.8% of one or combination in CeO2, Y2O3 and La2O3, 0.3-1.5% of MgO, 0.3-1.8% of CaF2, 0.0-1.5% of B, 0.1-0.8% of Nb, 0.1-1.0% of Ti, 0.1-2.0% of grain refining and recrystallization inhibitor according to the mass percent; or the powder is added with 1-40% of carbide, nitride, micro-nano or nano particles of boride; and the mixture is put into a high-energy stirring ball grinding mill for grinding and ball milling, so that the micro-nano or nano alloy powder can be prepared. A variable frequency induction heating device is adopted for cladding and melting vacuum or inert gas, so that a workpiece can be melted and coated with a micro-nano or nano scale alloy cladding layer which has the grain size of 0.1-35mm and is wear-resistant and corrosion-resistant, and the bimetal composite material can be prepared. The invention overcomes the defects in various coating techniques in China at present, can complete the preparation of the workpiece with the cladding layer having high thickness for once, does not need repeated coating and sintering, has high material utilization rate, low machining allowance and preparation cost, simple preparation technique and high production efficiency.

The invention discloses a preparation method of a p-CuO/n-CdS/ZnS composite semiconductor photochemical catalyst, which comprises the steps of: firstly, with an ammonium salt, a zinc salt, a cadmium salt, thiocarbamide and deionized water as raw materials, sequentially carrying out treatments such as microwave reaction, ultrasonic dispersion, heating reaction, washing, ultrasonic dispersion, filtering, drying, roasting, grinding and the like to obtain CdS/ZnS solid powder; and secondly, with the CdS/ZnS solid powder, a copper salt, alkali and deionized water as raw materials, sequentially carrying out treatments such as reaction, ultrasonic dispersion, decompression distillation, thermal treatment, washing, ultrasonic dispersion, filtering, drying, roasting, grinding and the like to obtain the p-CuO/n-CdS/ZnS composite semiconductor photochemical catalyst. Through compounding a p-type semiconductor CuO with n-type semiconductor CdS and ZnS, oxidization of holes to the CdS can be effectively reduced, the light corrosion rate of the CdS is decreased; and photoproduced electronics are effectively separated from the holes, thus the service life of the CdS is prolonged, and the photochemical catalysis efficiency of the p-CuO/n-CdS/ZnS composite semiconductor photochemical catalyst is increased. The method is simple, convenient and practical, and is beneficial to popularization.

The invention relates to a nano carbon black conductive concrete which is prepared by using silicate cement and sand as the basic material and using nano carbon black as the conductive phase, wherein the constituents of the conducting material comprise (by weight percent) nano carbon black 0.05-3, nano carbon black dispersing agent 0-3, concrete dehydragent 0-0.75.

The invention provides a washing machine control method and device and a washing machine. The method includes controlling a water inlet valve of the washing machine to intermittently open to perform awater supplementing washing stage after water is fed into the washing machine to the first preset water level; after water supplementing, controlling a heater of the washing machine to conduct heating and controlling the washing machine to perform a heating washing stage in a combination of beat washing and high speed barrel spinning washing; after the heating washing stage, controlling the heater of the washing machine to stop heating and controlling the washing machine to perform a main washing stage in the combination of the beat washing and the high speed barrel spinning washing. By meansof combination of the different washing modes, the washing effect of clothes is improved.

The invention discloses substrate processing equipment and a cavity chamber device thereof and a substrate heating method. The cavity chamber device comprises a cavity chamber body, a heating part, a bearing platform and an even heating plate, wherein a processing cavity chamber is limited in the cavity chamber body, the heating part is arranged on the top of the interior of the processing cavity chamber, the bearing platform is arranged in the processing cavity chamber and used for bearing a substrate, the upper surface of the bearing platform is relative to the heating part, and the even heating plate can move between a holding position and an even heating position. When the even heating plate is in the even heating position, the even heating plate is arranged between the heating part and the bearing platform, and when the even heating plate is in the holding position, the even heating plate departs between the heating part and the bearing platform. According to the cavity chamber device, thermal homogenization generated by the heating part is transmitted to the substrate through manners, such as a thermal radiation manner and a thermal convection, and therefore, even hearting on the substrate can be achieved.

The invention discloses a pretreatment method of lignocellulose by using microwave-assisted alkaline sodium sulfite, belonging to the technical fields of biomass resource utilization and agricultural waste comprehensive utilization. The method comprises the following steps: by using lignocellulose as a raw material, pulverizing, screening, and pretreating by using microwave-assisted alkaline sodium sulfite to lower the alkali consumption and enhance the pretreatment effect of the alkaline sodium sulfite; and carrying out solid-liquid separation, flushing the solid residue with an alkaline sodium sulfite solution, and washing with water to obtain the lignocellulose pretreatment product with favorable enzymolysis effect. The method can better remove lignin and reduce the inhibition effect of lignin on cellulose degradation, thereby effectively enhancing the conversion efficiency from lignocellulose to monosaccharide. The method reduces the chemical reagent consumption, is beneficial to environmental protection, and lowers the production cost, thereby generating higher economic value.

The invention discloses a heating wire assembly used in an electronic cigarette atomizer. The heating wire assembly comprises an oil guide body and a heating wire. The heating wire is nested in the oil guide body in a winding and circuitous mode. The two tail ends of the heating wire are located outside the oil guide body. Due to the fact that the heating wire is nested in the oil guide body in the winding and circuitous mode, the heating wire can make full contact with the oil guide body, the heating uniformity is improved, the atomization amount of tobacco tar is increased, and the demand for the large smoke volume of an electronic cigarette of part of consumers can be met. The invention further discloses an atomizer containing an atomization core and the electronic cigarette.

The invention relates to a double-pipe SAGD long horizontal well uniform steam injection numerical simulation method considering coupling of an oil reservoir and a shaft, and the method comprises thesteps: establishing a reservoir internal seepage and heat transfer mathematical model in a three-dimensional three-phase heavy oil reservoir double-pipe steam injection development process from the aspects of mass conservation and energy conservation; And establishing a flowing and heat transfer mathematical model in the wellbore in the steam injection process according to the variable-mass bidirectional convergence flow characteristic of the fluid in the wellbore and the structural characteristics of the slotted screen pipe column. The method is based on pressure and temperature continuity principles. the wellbore model and the reservoir model are coupled; the model is solved by adopting a fully implicit finite difference method and an iteration technology; By means of the model, the distribution rule of parameters such as pressure, temperature, steam inflow and wellbore on-way steam pressure, temperature and dryness at any moment in the simultaneous steam injection process of the double-pipe SAGD long pipe and the double-pipe SAGD short pipe can be predicted, proper steam injection parameters are selected, the stratum heating uniformity degree is improved, and a reasonable development scheme is made.