124results about How to "Heat-dissipation is slow" patented technology

The invention discloses a molten jetting deposition 3D printing device driven by an electric field, and a working method thereof. The problems that the molten droplet jetting 3D printing accuracy is low, the printing materials are limited and the micro-scale structure printing is hard to achieve are solved, and the high-accuracy and high-efficiency macro/micro-scale manufacturing of complex 3D structures using thermal phase transition and thermoplastic polymer materials and composite materials is achieved. According to the technical scheme, the 3D printing device comprises a two-dimensional stage which is provided with a printing bed, and an insulating thermal-conductive substrate is attached to the printing bed; a jetting unit is arranged above the insulating thermal-conductive substrate, and connected to a Z-axis workbench; the jetting unit comprises a print head comprising a nozzle and a material storage barrel which are connected to each other, and the print head is connected to the anode of a high-voltage pulse power supply; the nozzle is a musashi conductive nozzle; the material storage barrel is connected to a backpressure control unit; and a heater is sheathed outside the print head, and connected to a temperature control unit.

The invention discloses a semicontinuous casting crystallizer for restraining cracking of a magnesium alloy ingot blank and a use method of the semicontinuous casting crystallizer and belongs to the technical field of casting. The crystallizer comprises an inner sleeve, heat preservation layers, a cooling water tank, a magnet exciting coil and a crystallizer shell. The heat preservation layers are arranged above the inner wall of the inner sleeve or arranged above the outer wall of the inner sleeve or arranged above the inner wall and the outer wall of the inner sleeve at the same time. The inner heat preservation layer is embedded into the inner sleeve and spliced to the inner wall. The outer heat preservation layer is embedded into the inner sleeve and spliced to the outer wall of the inner sleeve. The use method comprises the steps that 1, a dummy ingot is lifted into the crystallizer; 2, cooling water is opened, and the magnet exciting coil is provided with alternating current; 3, magnesium alloy melt is stirred through Lorentz force generated by the magnet exciting coil; and 4, after a stable solidified shell is formed, a casting machine is started, and the ingot blank is pulled out of the crystallizer. The method and crystallizer are reasonable, and the cracking tendency of alloy ingot blanks prone to crack and flat blanks and round blanks of large specifications in the semicontinuous casting process can be effectively lowered.

The invention relates to a flexible body temperature sensing material and a preparation method therefor. The sensing material contains a flaky composite material, at least two flexible conductive fibers and a flexible coating, wherein the at least two flexible conductive fibers are in electrical conduction with the composite material separately, and the external surface of the composite material is coated with the flexible coating; and the composite material is a composite material of polyvinylidene fluoride and graphene. The flexible body temperature sensing material and the preparation method therefor have the following characteristics: (1) the graphene is adopted as a conductive material, so that the sensing material is low in consumption, low in cost, good in conduction effect and high in accuracy; (2) the polyvinylidene fluoride is adopted as a temperature responsive expansion body, so that the positive correlation is accurate, and particularly, the linear precision is more sensitive after carrying out partial irradiation; and (3) a polydimethylsiloxane flexible coating has the characteristics of being relatively easy to process, good compatibility with human bodies, and the like and is large in relative specific heat capacity and low in heat dissipating speed, so that body surface temperature can be more accurately measured; and meanwhile, polydimethylsiloxane is good in air permeability and good in flexibility, so that the improvement on comfort level of wearers and the accuracy of temperature measurement is facilitated.

A LED (Light Emitting Diode) bulb structure includes a base, a plurality of fins and a shell. One end of the base is electrically connected to a power source, and the other end of the base is used for holding a LED light source. The fins are disposed on a surface of the base. The shell encloses the fins, and the shell includes a plurality of first heat-dissipation holes and a plurality of second heat-dissipation holes. The first heat-dissipation holes are arranged around the shell and corresponding to the fins for allowing airflow entering the first heat-dissipation holes to directly pass through each of the fins corresponding to each of the first heat-dissipation holes. The second heat-dissipation holes are arranged around the shell and disposed above the first heat-dissipation holes for enabling the first heat-dissipation holes and the second heat-dissipation holes to conduct thermal convection.

The invention discloses a multifunctional electric heating radiator comprising a net cover (1), a heating pipe (2), a reflecting plate (4), an arc plate (5), a soleplate (6), a side plate (7) and a rear cover plate (8), wherein the heating pipe (2) is a lamp tube which can radiate and is fixed at two sides of the reflecting plate (4) by a fixed sheet (3); the arc plate (5) is a metal arc plate, the external surface of which is provided with a plurality of creasing arc-shaped surfaces; the heating pipe (2) is an infrared lamp tube with the tube body made of ground glass; two ends of the heating pipe (2) are respectively provided with a joint (10) body; the joint (10) body is provided with an axial through hole (11); the joint (10) body is provided with a radial through hole (12) which passes through the axial through hole (11); and the diameter of the radial through hole (12) is more than or equal to 3mm. The multifunctional electric heating radiator has the functions of illumination, indoor and outdoor function, is light and convenient for being carried, and has small volume; furthermore, as the arc plate (5) adopts the creasing shape, the heat absorbing effect is reinforced, the heat dissipation is slow and the heat-preservation effect is better.

The present invention provides a large-flow instant drinking machine. It includes the following several portions: drinking machine water inlet, drinking machine water outlet, pipeline and valve, flow-regulating device, pipeline electroheater and container electroheater. Said invention also provides the connection mode of all the above-mentioned portions and the working principle of said drinking machine.

The invention discloses a high-pressure-resistant high-strength all-ceramic heat-resistant vessel and a preparation method thereof. Blanks of the high-pressure-resistant high-strength all-ceramic heat-resistant vessel comprise lithium china clay, cooked quartz, kaolin, ball clay, talc washed mud, cooked alumina, zinc oxide and zirconium oxide. Glazes comprise quartz, cooked clay, thin aluminium powder, talc, calcite, kaolin and boric acid. The preparation method comprises the following steps: preparing the blanks, preparing the glazes, carrying out blank forming, stoving, fettling, biscuiting, glazing and sintering. The product has high heat-resistance and mechanical strength, can reach 800 DEG C, is not burst when poured into water of 20 DEG C, and is high-pressure-resistant, high-temperature-resistant and high in strength. The product is completely vitrified and achieves all-ceramic standard, and the water absorption achieves less than 0.01%. The product is wide in application scope, can be made into various pots and pans, is suitable for frying, stir-frying, stewing and boiling food with various heat sources and can be used as a liner of an electric pressure cooker. In addition, the product can achieve the non-stick effect naturally by the light glaze, and a non-stick coating is no longer used so that the product is safe and healthful.

The invention relates to the field of casserole manufacturing and particularly relates to a heat-resistant ceramic casserole with a metallic magnetically-conductive film. The heat-resistant ceramic casserole comprises a casserole body, wherein the bottom of the casserole body is sequentially spray-coated with a metallic transition layer, a metallic magnetically-conductive layer and a metallic protective layer. The thickness of the metallic transition layer is 0.1mm to 0.2mm, the thickness of the metallic magnetically-conductive layer is 0.2mm to 0.5mm, and the thickness of the metallic protective layer is 0.1mm to 0.2mm; and the total thickness of the three layers is 0.6mm to 0.7mm. According to the heat-resistant ceramic casserole, the design is reasonable; the greatest advantage by adopting this technology is as follows: nature, no toxicity, harmlessness and original taste and flavor of ceramic cooking utensils are conveniently and quickly combined with no open flame of electromagnetic ovens so as to develop the casserole for the electromagnetic ovens; and the heat-resistant ceramic casserole meets the requirements of modern consumers on cooking and has a very good market application prospect.

The invention discloses a low-temperature semiwhite porcelain and a manufacturing method thereof, belonging to the technical field of ceramics. The blank of the low-temperature semiwhite porcelain comprises the following raw materials in parts by mass: 30-40 parts of Longyan clay, 25-35 parts of Gangxi kaolin raw ore, 20-28 parts of flint, 7-12 parts of feldspar, 2-9 parts of talcum and 5-10 parts of dolomite. The low-temperature semiwhite porcelain can be quickly fired at the low temperature of 1000 DEG C, and can be discharged out of the kiln only by 7-8 hours from firing to cooling. The linear shrinkage is low and can be kept at 12% or below. The low-temperature semiwhite porcelain has high hardness and excellent whiteness (85% or above), and has comparable whiteness with light-weight porcelain. The low-temperature semiwhite porcelain has low water absorptivity (which can be kept at 3% or below and can reach the porcelain industry standard), has the advantages of high strength excellent high temperature resistance and excellent microwave resistance, can be subjected to 180-DEG C drying oven testing more than twice, and can pass the microwave oven and dishwasher performance test. The low-temperature semiwhite porcelain has wide applicability, and can be widely used for producing medium/high-grade domestic ceramics.

A method for attaching one metal to another one in sand mould includes such steps as precleaning the surface of a shaped solid metal, where another metal is attached to, putting it in a sand mould, filling and compacting sand for the surfaces not to be attached, making pouring system, MF induction heating to 200-1000 deg.C, pouring the molten another metal, and cooling.

The invention belongs to the technical field of phosphorus chemical product production in inorganic chemical industry, and relates to a brand new phosphorus pentoxide production technology. The technical process comprises the following steps: performing 80% sulfuric acid and 98% sulfuric acid two-stage series drying on air, and then continuously blowing into a combustion furnace with a water cooling jacket; flowing purified yellow phosphorus into the combustion furnace, and continuously performing oxidation combustion to generate phosphorus pentoxide smoke; sequentially guiding the smoke into two cooling settlement towers with multiple ventilation pipes, performing cooling settlement, and then packaging; and finally, guiding the residual small amount of phosphorus pentoxide smoke into a tail gas recovery acid tower for producing a phosphoric acid byproduct, and emptying the excessive air. Above all, the multiple ventilation pipes which run through the cooling settlement towers from bottom to top and are uniformly distributed are designed in the cooling settlement towers, so that natural air can absorb the heat of the phosphorus pentoxide smoke through the pipe walls to expand and travel upwards and be blown out from air pipe nozzles at the tops of the towers, and supplemented cold air enters the towers from the bottoms to form a large amount of air flow so as to take away the heat, thereby greatly improving the productivity.

The invention discloses a large-pipe-diameter thin-wall pipe post-welded heat treatment device and a using method thereof, and belongs to the technical field of welding heat treatment. The device comprises steel pipe supporting seats (1), electric heating elements (2), insulating layers (3) on the electric heating elements (2), thermocouples (4), a binding material (5), an inner pipe wall heat preservation layer (6) and a supporting frame (7), wherein the electric heating elements (2) are basically equally and uniformly arranged along the outer circumference of a steel pipe (8), and each of the electric heating elements (2) and the corresponding thermocouple (4) are respectively connected with the corresponding heat treatment temperature control instrument. During use, the electric heatingelements (2) of the device is electrified and heated, so that an annular weld joint (9) of the steel pipe (8) and the nearby area are heated to the heat treatment temperature, cooling is carried outafter heat preservation, and then the post-welded heat treatment of the steel pipe is completed. By the adoption of the large-pipe-diameter thin-wall pipe post-welded heat treatment device and the using method thereof, a better welding heat treatment and heat preservation effect can be obtained, the heating temperature is controlled accurately, the heating temperature fluctuation is small, the heat treatment deformation can be reduced, and the performance uniformity after heat treatment can be improved.

The invention provides an automatically-regulating new energy vehicle intake grille device, which comprises an air intake module, a telescopic module and a detection module; the air intake grille device comprises an air intake module, a telescopic module and a detection module. The air inlet module comprises a grille plate and a moving plate; the telescopic module comprises a telescopic rod and asliding cavity; a spring is arranged between the rear end of the sliding rod and the rear side of the sliding cavity; the upper end of the sliding cavity is provided with a positioning groove; the detection module comprises a thermistor, an electromagnet and a limiting piece. The device for automatically adjusting the intake grille of a new energy vehicle is a device for synchronously adjusting the intake size of the intake grille of the vehicle through detecting the temperature of the engine of the vehicle, so that the intake grille of the vehicle increases the intake air quantity with the increase of the temperature of the engine, and plays the roles of heat preservation and heat dissipation.

The invention provides a wear-resistance and heat-resistance functional ceramic pot. The wear-resistance and heat-resistance functional ceramic pot comprises a blank and an enamel layer applied to theblank; the blank is prepared from, by weight, 35-50 parts of kaolin, 35-50 parts of waste ceramic, 25-35 parts of zircon powder, 10-15 parts of sepiolite powder, 20-30 parts of activated aluminum oxide and 8-12 parts of silica gel powder; the enamel layer is prepared from, by weight, 10-20 parts of kaolin, 10-15 parts of mica powder, 6-12 parts of silicon dioxide, 10-15 parts of silica gel powder, 5-10 parts of zircon powder, 8-14 parts of bone meal, 8-12 parts of carbon fiber powder and 3-15 parts of pigment. The ceramic pot is smooth and bright in appearance, quick in heat conduction, goodin thermal insulation, resistant to wear and corrosion, and free of toxicity or pollution.

The invention discloses concrete, which comprises the following components: 270-290kg of cement, 178-205kg of water, 528-560kg of fine aggregate, 1200-1350kg of coarse aggregate, 3.5-5.6kg of pumping aid, 27-32kg of swelling agent and 101-116kg of coal ash. The invention also discloses a cracking-resistant pouring method by adopting the concrete disclosed by the invention. The cracking-resistant pouring method comprises the following steps: S1: adding ice blocks into the concrete for stirring, wherein the addition of the ice blocks is 35-51kg/m<3>; S2: continuously pumping evenly stirred concrete into a die cavity, and evenly vibrating until the whole die cavity is vibrated. The concrete disclosed by the invention can be suitable for large-volume concrete pouring, heat of hydration is lowered, and the heat retaining property of the concrete is improved. If the cracking-resistant pouring method disclosed by the invention is adopted, the temperature of the concrete can be evenly distributed, the heat retaining property of the concrete is good, the cooling speed of the concrete is low, the temperature difference of each layer of the concrete is reduced, the heat expansion and cold contraction of each layer of the concrete tends to be synchronous, and the interior of the concrete can be prevented from cracking due to the temperature difference.

The invention discloses a carbon-system far-infrared radiation electric hot plate and a manufacturing method thereof. The electric hot plate comprises a carbon-system far-infrared radiant electric hotsubstrate. The substrate is made of a carbon-system far-infrared radiant electric hot composition. The carbon-system far-infrared radiant electric hot composition comprises a carbon-system three-dimensional conductive network body, a composite ceramic powder and a binder. The carbon-system three-dimensional conductive network body is formed by a conductive fiber whose surface is grafted with graphene and carbon black whose surface is grafted with acrylamide through electrostatic adsorption. The electric hot plate possesses a high far-infrared radiation effect and a high release negative ion effect. An infrared radiation wavelength is 8-10nm and the wavelength is similar to an organism. The conductivity of the electric hot plate is good, and the electric hot plate has a high electro-thermal conversion rate, a small resistance, a fast temperature rise speed, a high heat storage capability and good heat dissipation performance, and can be used under a 36V voltage. A good heating effect is reached and safety is high. Besides, the electric hot plate has excellent characteristics of flame retardance, acid resistance, alkali resistance, antibacterial mould prevention, ageing resistance,environmental protection, decorativeness and the like.

The invention relates to an external health-care health preserving ointment, and particularly relates to a magnetic moxibustion ointment for human body toxin expelling and health preserving and a preparation method of same. The magnetic moxibustion ointment is prepared from 20-55 parts of biological magnetic mud, 8-20 parts of traditional Chinese medicine powder and 30-45 parts of beeswax by heating, stirring, sub-packaging and cooling. When in use, the magnetic moxibustion ointment is heated by a microwave oven for 3-5 min and then placed still, when the temperature tested by skin is proper, the magnetic moxibustion ointment is spread on focus position of a human body and covered by a thin film, and after the magnetic moxibustion ointment is cooled for 30-45 min, the magnetic moxibustion ointment is removed from the skin surface. The magnetic moxibustion ointment has the effects of dredging channels and collaterals, promoting blood circulation by removing blood stasis, supplementing energy, conditioning Yin and Yang, activating cells and improving incretion, so as to reach the actions of clearing, conditioning, supplementing, expelling toxin, removing diseases and restoring health. At the same time, the magnetic moxibustion ointment has the advantages of simplicity in preparation, convenience for use, good effect, significant curative effect, no side effect, safety, reliability, repeated utilizations, economy, practicality and the like.

The invention discloses a heat-insulation refractory brick manufacturing method and relates to the technical field of manufacturing of refractory materials. The heat-insulation refractory brick manufacturing method includes preparing, by weight, 25-35 parts of calcined bauxite, 30-40 parts of silica powder, 15-20 parts of combined clay and 5-8 parts of calcium aluminate cement, mixing, making blank, drying and baking. Compared with the prior art, the heat-insulation refractory brick manufacturing method is high in compression strength, resistant to high temperature and low in heat conductivity and is good in heat insulation effect as a heat-insulation material of a boiler wall, and the boiler using the heat-insulation refractory brick keeps heat long and energy resource is saved.

The invention belongs to the technical field of tea leaf processing and discloses a processing method of tea leaves. The processing method comprises the steps of de-enzyming; primary rolling; pile fermentation and fermentation; rerolling to form; roasting and the like. In the pile fermentation and fermentation step, a tea leaf pile fermentation and fermentation device is used, comprising a fermenting barrel, wherein a rotary shaft is connected to two sides of the fermenting barrel, a baffle plate is arranged in the fermenting barrel, air bags are arranged in the fermenting barrel on two sides of the baffle plate, first to fourth slide plates are arranged in the air bag, a through hole is formed in the air bag between the second slide plate and the third slide plate, an elastic piece is arranged between the first slide plate and the second slide plate and is arranged between the third slide plate and the fourth slide plate, a push rod is connected to the first and fourth slide plates, the other end of the push rod is connected to a torsion spring, the torsion spring sleeves on the rotary shaft, and an annular chute is also formed in the rotary shaft; a first flow guide channel, a second flow guide channel and a third flow guide channel are arranged in the baffle plate, the first and second flow guide channels are cylindrical and the third flow guide channel is spirally cylindrical. The processing method solves the problems that in a tea leaf processing course in the prior art, the quality is instable and the defective percentage is high.

The invention relates to common casting zirconium corundum fused brick foamed brick casting equipment and a casting method. The problems of production of the zirconium corundum fused brick foamed brick and high-temperature explosion of the fused brick can be solved effectively. According to the technical scheme, the common casting zirconium corundum fused brick foamed brick casting equipment comprises a casting sand mould, wherein the casting sand mould comprises a brick sand mould and a hollow structure; the hollow structure is arranged on the brick sand mould and is formed by a riser sand mould, and the upper part of the hollow structure is open; the riser sand mould comprises a feeding head and inflating risers which are symmetrically arranged on the two sides of the feeding head; a casting channel is formed at the bottom of the brick sand mould; the inlet end of the casting channel stretches upwards; a casting riser is arranged on the stretched end part; inflating pipelines are inserted in the inflating risers correspondingly; the lower ends of the inflating pipelines stretch into the brick sand mould; and the gas inlet end of each inflating pipeline is connected with an air compressor to form an inflating structure. The equipment and the method have the advantages that the heat-insulating effect is remarkable; the heat-dissipating speed is low; the heat-insulating effect is good; under the high-temperature state, the stress under the hot expansion and cold shrinkage counteracting action of zirconium is completely relieved; and the explosion phenomenon caused by large temperature fluctuation is avoided.

The invention relates to a heat preservation formwork for a reinforcement cage and a construction method and a forming die of the heat preservation formwork and belongs to the technical field of decoration projects of buildings. The heat preservation formwork is formed through a specially-manufactured die in a die casting mode and is used for heat preservation construction of a shear wall. The side wall of the heat preservation formwork for the reinforcement cage is provided with an outrigger, and the side wall of the heat preservation formwork for the reinforcement cage is provided with vertical tubular ventilation holes. Under the action of the heat preservation formwork, the built shear wall has the advantages that the built shear wall is not likely to be cracked, automatic heat dissipation is achieved, and the service life is prolonged.

The invention provides a polymer power cable insulation acceleration electrical tree aging test method and a device, which relate to a testing device for monitoring polymer power cable insulation electrical tree aging and a method thereof. The device provided by the invention comprises a non-vignetting testing transformer, an induction voltage regulator, a capacitance voltage divider, a testing electrode, a broad band current sensor, an amplification filter, a digital oscillograph, a microcomputer and an electrothermal combined aging oven. The method provided by the invention comprises the following steps: the testing preparation is carried out with the device provided by the invention; a test sample is subjected to local discharge data acquisition and processing through a program; and the image and the basic data of the insulation electrical tree branching of the test sample are obtained through slicing and photographing. The device provided by the invention has the advantages of high pressure resistance and heat resistance level, small amount of self-local discharge, and safe and reliable use. The method provided by the invention has the characteristics of convenient and accurate use, and the like. The invention can be widely applied to the field of monitoring the insulation aging of a power cable, in particular to the field of monitoring the insulation electrical tree agingof a polymer power cable.