69results about How to "Increase the amount of charge" patented technology

An implantable medical device such as a defibrillator is described. The device includes an hermetically sealed housing containing a flat electrolytic capacitor and an energy source such as a battery. The battery is connected to the capacitor and provides charge thereto. The capacitor stores the charge at a relatively high voltage. The charge stored in the capacitor is discharged through a defibrillation lead to a site on or in the heart when fibrillation of the heart is detected by the implantable medical device. Methods of making and using the implantable medical device, the capacitor, and their various components are disclosed.

There is configured a solid-state image pickup unit including a photoelectric conversion section formed on a light incident side of a substrate; a first charge accumulation section accumulating a signal charge generated by the photoelectric conversion section; a second charge accumulation section formed in a region other than a light-condensing region where incident light is condensed in the substrate on a side opposite to a light incident side and formed to be laminated together with the first charge accumulation section in a depth direction of the substrate; and a floating diffusion section formed in a region other than the light-condensing region in the substrate on the side opposite to the light incident side and converting the signal charge into a voltage.

The invention relates to the technical field of ingot casting of solar energy batteries, in particular to a production method of a large polycrystalline ingot. Silicon nitride and water are mixed uniformly through electric mixing for 15-30 minutes, and the mixture is used as a coating liquid, the coating liquid is uniformly coated on the inner surface of a crucible after the crucible is preheated, and then high-temperature baking is carried out on the crucible, a silicon material is loaded in the baked crucible, and then charging is carried out on the crucible loaded with the silicon material, shielding gas-argon passes through a polycrystalline furnace after vacuumizing is carried out on the polycrystalline furnace, the polycrystalline furnace is heated to melt the silicon material, and then, the melted silicon material is gradually crystallized from the bottom part to the top part through directional solidification, and then discharging is carried out after gradual cooling is carried out through high-temperature annealing, the crucible is disassembled after the discharged polycrystalline ingot is cooled at room temperature, so as to obtain the polycrystalline silicon ingot which is sliced to prepare the battery. The large charging amount is realized, the capacity of the casting ingot is improved, the utilization rate of the polycrystalline ingot is improved, the cost is reduced, the requirements of a high-load slicer are met, and the crystal quality is kept to be unchanged.

The invention discloses a VGF / VB gallium arsenide single-crystal furnace structure and a growing method. According to the VGF / VB gallium arsenide single-crystal furnace structure, a resistance heatingfurnace which is relatively lowest in production cost and is provided with multiple temperature zones is adopted; a support structure adopts graphite; the support strength is improved; the loading amount is favorably increased; release of latent heat of growth crystallization is facilitated; the crystal yield of crystal growth is favorably improved; a sealing structure with a reusable quartz tubeand a stainless steel flange is adopted; a 1-atm air charging and discharging automatic valve is additionally arranged on an air channel pipeline, so that the balance of inner air pressure and outerair pressure of the quartz tube can be effectively guaranteed, and the influence of deformation of the quartz tube on reuse is avoided. A VGF method and a VB method are used for growing crystals; whenthe crystals are grown by the VB method, the sunken degree of a concave solid-liquid interface of the VGF growth method can be improved, so that the crystal yield is favorably improved. The single-crystal furnace and the growth method are used for growing the gallium arsenide single crystals with maximum size of 8 inches; meanwhile, the quartz tube can be reused, so that the production cost can be reduced; a CO atmosphere doping manner also can be used for controlling the resistivity and the axial resistivity uniformity of semi-insulating gallium arsenide.

The invention discloses a method for performing anti-wear treatment on a hopper of a loading machine, which comprises the following steps: using a low-carbon steel or low-alloy steel plate as a base plate, selecting a build-up welding flux-cored soldering wire of which the diameter is between 2.0 and 4.0 millimeters special for the hopper of the loading machine, and welding a wear-resisting layer of which the thickness is between 3.5 and 8.0 millimeters on the base plate by adopting a visible arc build-up welding or gas coverage build-up welding process to prepare a wear-resisting composite steel plate; by adopting a plasma cutting device, cutting out a left wear-resisting plate and a right wear-resisting plate in a right trapezoid shape respectively, a middle wear-resisting plate in an isosceles trapezoid shape, and two bottom plates in isosceles trapezoid shapes on the wear-resisting composite steel plate; leveling the plates; and putting the cut wear-resisting layers of the left wear-resisting plate, the middle wear-resisting plate, the two bottom plates and the right wear-resisting plate outwards, and welding the wear-resisting layers on the outside surface of the hopper bottom of the main cutting board side of the hopper respectively through gas shielded arc welding or welding rod arc welding so that the wear-resisting layers are integrated with the original hopper bottom into a whole. After the treatment by the method, the service life of the hopper is greatly improved, the frequent maintenances are avoided, the working efficiency of the loading machine is improved, and steel materials are saved.

The invention provides a production method of chrome carbide powder, which particularly comprises the steps as follows: smashing metal chrome into metal chrome powder; evenly mixing the metal chrome powder with carbon according to the weight ratio of (76 to 91%): (24 to 9%), adding 0-3% of agglomerant into the mixture according to the weight ratio, and pressing to be formed after evenly mixing; putting dried and formed lump materials in a high-temperature vacuum furnace, vacuumizing, rising the temperature when the vacuum degree reaches 5-40 Pa for 6-12 hours, rising the temperature to1200-1400 DEG C, preserving the temperature for 1-5 hours, keeping the vacuum degree within the range of 20-100 Pa, rising the temperature to 1400-1800 DEG C for 2-8 hours, preserving the temperature for 1-5 hours, keeping the vacuum degree within the range of 20-100 Pa, powering off and reducing the temperature after preserving the temperature, stopping vacuumizing, charging argon into the furnace, and discharging chrome carbide agglomerates out of the furnace when the pressure in the furnace is 0.05-0.1MPa, and the temperature is reduced to 80 DEG C; and smashing the chrome carbide agglomerates to obtain the chrome carbide powder.

The invention relates to a method in which hematite or limonite are quickly reduced and made into iron powder, which aims to use iron ore difficult to be magnetically separated as a raw material to reduce the cost. The method is characterized in that hematite ore or limonite ore are crushed and then washed and magnetically separated; iron ore powder, coal powder and lime powder are mixed according to the proportion, and calcium fluoride and adhesive are added to be pressed into flans with pores, and the flans are dried; the structure of a kiln car surface is improved, and a sagger is made; the pressed and dried flans are hoisted to the kiln car surface after being put orderly, and the sagger is covered outside the flans; a tunnel kiln is used for calcinating the flans, and two ends of the tunnel kiln are covered with air sealing machines; after the kiln car travels out of the tunnel kiln, a motor hoist is used to hoist the sagger, calcinating blocks are pushed into a water pool to be quickly cooled and automatically ground, and the iron powder and dregs are fished out to directly enter a ball mill to be wetly milled and be pressed into blocks or bagged after the separation of a magnetic separator and the drying.

The invention relates to a cake forming method of high-purity alumina powder, belongs to the technical field of chemical machining forming methods, and in particular to an alumina cake forming method. The cake forming method comprises the steps of preforming, vacuum sealing, isostatic cool pressing, high-temperature sintering and the like. According to the invention, a mould made of a PP or tetra fluorine material is adopted, pollution caused by high-purity alumina by the traditional steel mould is avoided, a preformed cake obtained by through low-pressure pressing can ensure that the cake in the later-stage isostatic cool pressing does not easily deform like the original organic mould due to a certain strength, thus the cake with uniform material and enough density is obtained. The cake subjected to the isostatic cool pressing has unchangeable purity after being sintered, and has uniform shape and size and density of commonly reaching 3.0-3.7g / cm<3>. The loading quantity during producing and loading of a downstream manufacturer of sapphire can be effectively increased.

The invention relates to smelting equipment, especially to an integrated mechanical automation machine for pneumatic packing of furnace charge pellets in a magnesium metal reduction tank and for pneumatic raking of high temperature reducing slag in the tank. The machine is applicable to pneumatic packing of furnace charge pellets and pneumatic raking of reducing slag for a ferrosilicon-process semi-continuous magnesium-smelting external heating type transverse tank. The machine is characterized in that high-flow high-pressure air flow of a Roots blower is used as material conveying power, all the units are mounted on a main running gear which walks in virtue of motor-driven rollers, and a machine body which is controlled by a hydraulic mechanism and can vertically rise and fall and a transverse running gear are arranged on a frame. An air supplying and material conveying pipeline is delivered to the reduction tank through a main drive mechanism on the machine body, reducing slag and pellet furnace charge are introduced into the air supplying and material conveying pipeline at different times and discharged from the reduction tank in virtue of the high-pressure air flow of the Roots blower, and produced dust is collected and cleaned. The machine has a high degree of automation and can both thoroughly remove reducing slag in the tank and intactly pack pellet furnace charge.

The invention relates to a swing-type friction nano-generator and an energy harvester. The swing-type friction nano-generator comprises a housing, a swing structure, an electrode layer and a distributed friction layer, wherein the housing is of a closed housing structure and is internally provided with a cavity; the swing structure is positioned in the cavity and comprises a swing rod and a free swing friction layer which is rigidly connected with the tail end of the swing rod; the electrode layer is located on an inner surface of the housing and comprises a first electrode layer and a secondelectrode layer which are spaced apart from each other; the material of the distributed friction layer and the material of the free swing friction layer are located in different triboelectric sequences, one end of the distribution friction layer is fixed on the electrode layer, and the other end is a free end; and when the swing structure swings in the housing due to external excitation, the freeswing friction layer of the swing structure swings along with the swing structure, and electrical output is correspondingly generated on the electrode layer through friction electrification between the free swing friction layer of the swing structure and the distributed friction layer. The swing-type friction nano-generator has high energy collection efficiency, can adapt to various environments,has high stability and reliability, can respond to external excitation at any angle, and has a wide application prospect.

The invention provides a preparation method of alpha-Sialon fluorescent powder which is the fluorescent powder for the blue LED and UV LED. The alpha-Sialon fluorescent powder can be expressed by the general formula (M1)x(M2)ySi12-(m+n)Alm+nOnN16-n, wherein M1 is one or more elements of Li, Mg, Ca, Y, Sr and Gd, M2 is one or more elements of Eu, Ce, Pr, Tb, Yb, Dy and Er, 0.3<=x+y<=1.8, 0<=y<=0.7, 0.5<=m<=4.0, 0<=n<=2.5, and x+y=m / (average valence of M1 and M2). The synthesis process of the alpha-Sialon fluorescent powder comprises the following steps: firstly performing ball milling to raw materials, drying, then synthesizing through propagating technology, finally grinding and sorting or directly sorting to obtain the alpha-Sialon fluorescent powder. The preparation method of the invention has simple devices, high efficiency and low cost and the industrial production is easy to realize.

The invention provides a formulation and technology of medium-high-alumina ceramic balls. The medium-high-alumina ceramic balls comprise the following raw materials in percentage by mass: dolomite, barium carbonate, bauxite, chinastone and calcined fossil; the technology comprises the steps of wet grinding for twice, precipitating for twice, adding a binding agent for uniformly mixing and firing, so as to obtain the medium-high-alumina ceramic balls. With the adoption of the medium-high-alumina ceramic balls prepared by using the formulation and technology provided by the invention, the defects that the conventional medium-alumina ceramic balls and medium-high-alumina ceramic balls are relatively low in bulk density, higher in abrasion loss, lower in hardness, and not pure enough in color and luster, and the using function loss of the medium-high-alumina ceramic balls reaches or is close to the using function standard of high-alumina ceramic balls.

The invention relates to the technical field of comprehensive utilization of a tungsten-molybdenum associated mineral, in particular to a method for smelting a tungsten-molybdenum-iron alloy from the tungsten-molybdenum associated mineral. The method includes the steps that firstly, the tungsten-molybdenum associated mineral, a carbonaceous reducing agent and a binding agent are evenly mixed and formed according to a certain ratio, the dried mixed material and waste steel are placed in an induction heating furnace according to a certain ratio to be subjected to high-temperature reduction, the tungsten-molybdenum-iron alloy is obtained, and P in the mineral continues to be left in the mineral. The method has the beneficial effects of being large in processing capacity, good in product quality, low in energy consumption, low in pollution, low in production cost, and the like.

The invention discloses a method for preparation of vanadium nitrogen alloy by a pusher kiln technique. The method adopts double-pusher kiln equipment. The hearth structure of the double-pusher kiln consists of a kiln cavity, a cover plate, a side wall and a track. The kiln cavity is longitudinally provided with a low temperature section, a transition section, a high temperature section and a cooling section in order. The low temperature section has 5 temperature zones, the transition section has 4 temperature zones, and the high temperature section is provided with 7 temperature zones. The cooling section falls into a natural cooling area and a forced cooling area. Heating element jacks are disposed at corresponding positions on side wall bricks of the temperature zones, so that heating elements and the kiln cavity can be separated. The method for preparation of vanadium nitrogen alloy by the double-pusher kiln consists of: mixing raw materials evenly and making the mixture into a ball, sending the ball into the double-pusher kiln, introducing nitrogen to maintain micro-positive pressure constantly in the kiln, subjecting the ball to carbonization and nitridation reaction in the kiln, performing cooling in nitrogen atmosphere to obtain a vanadium nitrogen alloy product, cooling the product gradually and discharging the product. The method provided by the invention can lower equipment investment and simplify the operation process, can realize continuous production, and significantly improves the production efficiency.

The invention relates to aluminum alloy for an erbium-containing tank and a plate manufacturing method for the aluminum alloy, and aims to improve the welding property and the corrosion resistance ofthe alloy for the erbium-containing tank. The aluminum alloy for the erbium-containing tank comprises the following elements: Mg, Mn, Er, Zr and Be. The method comprises the following steps: (1), blending, (2), smelting, (3), casting, (4) homogenizing annealing, (5) hot rolling, and (6) saw cutting of a finished product to obtain the aluminum alloy for the erbium-containing tank. By a manufacturedalloy plate for the erbium-containing tank, the welding property and the corrosion resistance are improved while various properties of common aluminum magnesium alloy are ensured, and therefore, thealloy can meet requirements of a dangerous chemical supplies tank material. The plate manufacturing method is applied to the field of manufacturing of aluminum alloy.

The invention relates to the technical field of vacuum metallurgical equipment, in particular to an electro-magnetic induction internal thermal type metallic magnesium vacuum reduction furnace which comprises a furnace body. A material basket (8) is arranged in the furnace body, and a central channel penetrating through the bottom face of the material basket (8) is formed in the center of the material basket (8). One or more heating cylinders (7) are concentrically arranged in the material basket (8). The material basket (8) and the heating cylinders (7) are filled with furnace burdens (9). A rectangular iron core is arranged in the furnace body. One long edge of the rectangular iron core penetrates through the central channel of the material basket (8), and a primary side coil (12) is wound around the other long edge of the rectangular iron core. The leading-out end of a copper winding of the primary side coil (12) is led out of the furnace through an insulated sealing device on the furnace body and is connected with a power source device. The electro-magnetic induction internal thermal type metallic magnesium vacuum reduction furnace is reasonable in design, distribution of a temperature field of the reduction furnace can be regulated, and heat transfer efficiency is high; the vacuum reduction furnace is used for high-vapor-pressure metallothermics production of magnesium, lithium, strontium, calcium and the like.

The invention discloses a copper foil copper dissolving tank copper material arranging method. The method comprises the following steps: the copper material used in a copper dissolving tank comprisesrecycled large copper foil blocks, recycled small copper foil blocks, a copper wire coil and flattened copper plates; a plurality of layers of flattened copper plates are laid in the interior bottom of the copper dissolving tank, the copper wire coil is placed at the upper parts of the flattened copper plates, and then, the recycled small copper foil blocks are placed in gaps around the copper wire coil; and when the recycled small copper foil blocks are flattened to cover the flattened copper plates, the recycled large copper foil blocks are placed at the upper part of the copper wire coil. With adoption of the copper foil copper dissolving tank copper material arranging method, the copper material stacking density in the copper dissolving tank is increased, so that the loading volume ofthe copper dissolving tank is increased, the degree of uniformity of the air in the electrolyte is increased, the content of the impurity in the electrolyte is reduced, the dissolving speed of the copper material is increased, and energy consumption during the copper dissolving process is reduced to further improve the quality of the electrolyte while reducing the copper dissolving cost.

The invention discloses a method for rapidly dissolving copper. The method comprises the steps of adding solid copper to a copper dissolving tank through a copper material feeding inlet, wherein the material stacking thickness enables air to pass through smoothly; after the material is completely added, sealing the feeding inlet; starting a circulating pump, and adding a dissolving solution to thecopper dissolving tank 1 through a dissolving solution inlet; and starting heating equipment, heating the dissolving solution to 50-65 degrees centigrade, adding compressed air to the copper dissolving tank 1, adding an SO2 gas through an SO2 gas inlet, comprehensively adjusting reaction parameters, and dissolving copper rapidly to generate CuSO4. When the concentration of Cu<2+> in the solutionexceeds or is equal to 100 g / L, the reaction is stopped, Cu<2+> is discharged through a dissolving solution discharge port of the copper dissolving tank, the qualified copper sulfate solution is discharged through a dissolving solution outlet, and the exhaust gas is discharged through an air outlet. According to the method for rapidly dissolving copper disclosed by the invention, the copper dissolving rate is high, the utilization rate of oxygen in air reaches 80%, the inflated air amount is greatly reduced, the evaporation amount of the dissolving solution is reduced by about 30%, and the copper dissolving capacity can reach 800 kg / m<3>.d.

The invention relates to a mixer and particularly relates to an airfoil blade disk turbine mixer used in a fermentation tank. The technical scheme provided by the invention is as follows: the airfoil blade disk turbine mixer used in the fermentation tank comprises a mixer body, wherein the mixer body comprises a wheel hub and mixing blades which are uniformly distributed along the circumferential direction of the wheel hub, annular airflow guiding plate bodies are arranged between the mixing blades and the wheel hub, the airflow guiding plates are fixedly connected with the wheel hub and the mixing blades, the mixing blades take the shape of an airfoil and are obliquely arranged on the airflow guiding plate bodies, wherein one ends of the mixing blades, which are connected with the airflow guiding plate bodies, are roots, the other ends of the mixing blades are terminals, the cross sections of the ends are arc-shaped, and corners of the ends are provided with circular arc chamfers. By adopting the technical scheme, the invention provides the airfoil blade disk turbine mixer used in the fermentation tank which has airflow control capability and improves the airflow dispersion effect.

The invention belongs to the technical field of edible fungus cultivation, and relates to a preparation method of an edible fungus cultivation medium containing compressed straw. The method comprisesthe following steps of crushing straws and compressing into solid bulks with the density of 1300-2000 Kg / m3 and water weight percentage content of 8-35%; and enabling the solid bulks to be mixed withwater at the weight ratio of (1:1) to 2, and adding lime which accounts for 0.3-1.0% of the weight of the solid bulks, performing water absorbing and scattering, then adding other edible fungus cultivation auxiliary materials, and performing mixing and stirring to obtain the edible fungus cultivation medium. The edible fungus cultivation medium provided by the invention has relatively high density, the yield of edible fungi in the unit volume cultivation matrix is increased, the production efficiency is improved, and the production cost is lowered.

The invention relates to a method for directly reducing materials by using a rotary hearth furnace, and belongs to the technical field of direct reduction by using the rotary hearth furnace. The method for directly reducing the materials by using the rotary hearth furnace solves the problems that the powdery materials have to be agglomerated when existing rotary hearth furnaces are used for reduction and the existing rotary hearth furnaces depend on gas with a high heating value. The method includes the following steps that step 1, the various materials loaded into silos are mixed to form a mixture, and the mixture is conveyed to a bottom plate of a ring-shaped rotating furnace bottom; step 2, combustion-supporting gas is supplied to the bottom plate of the ring-shaped rotary hearth furnace through an air supply unit; step 3, after an air blower is ignited, as the ring-shaped rotating furnace bottom rotates one circle, the mixture on the bottom plate undergoes physical and chemical reactions, and the roasted mixture is discharged from the rotary hearth furnace through a material shoveling device and a spiral discharger. According to the method for directly reducing the materials byusing the rotary hearth furnace, the reduction of the powdery materials directly into the furnace is realized and the rotary hearth furnaces get rid of the dependence on the gas with the high heatingvalue.

The invention provides a sludge squeezer with distributed squeezing units, relates to the technical field of sludge dewatering, and aims to solve the problems of single structure, low dewatering speed and poor dewatering effect of an existing sludge filter press. Comprising a lower platform, multiple sets of stand columns are installed on the lower platform, a movable beam is installed on the multiple sets of stand columns, a squeezing unit is arranged in the movable beam in a penetrating mode, the stand columns are further sleeved with a fixed beam, and the upper end and the lower end of the fixed beam are fixedly connected with adjusting nuts. The fixed beam is located above the movable beam, a working space is reserved between the fixed beam and the movable beam, a squeezing hydraulic cylinder is installed on the fixed beam, the round hole is formed in the side wall of the filter cylinder and used for draining water, and compared with a membrane filter press which is only provided with a water draining hole in a filter plate at the end of the filter cylinder, the water draining efficiency is greatly improved; in the sludge squeezing process, filtrate can be discharged without hindrance when reaching the side wall of the filter cylinder through the mud cake interlayer channel, so that the difficulty of filtrate discharge is reduced.

The present invention relates to a method for preparing flammable gas by cracking of agriculture and forestry wastes, and a special apparatus thereof. The method is characterized in that: agriculture and forestry wastes are crushed and pelletized, and then are added to a cracking furnace; with adopting a microwave ignition manner, the crushed agriculture and forestry wastes and a small amount of air are subjected to a thermal cracking reaction under an incomplete combustion condition to produce the flammable gas. The special apparatus comprises a furnace body, a material inlet arranged on the top of the furnace body, a waste material outlet arranged on the bottom of the furnace body, and a flammable gas outlet. The special apparatus is characterized in that: microwave heating sources are arranged in a line-row type manner on the upper part of the furnace body; the material inlet is communicated with a material feeder by a pipe; the flammable gas outlet is arranged on the lower part of the furnace body, and is sequentially connected with a tar purifier and a cooler by pipes. According to the present invention, based on the characteristic of the microwave heating technology, with combination of the incomplete combustion reaction generated by the sucked air and the material, the efficiency of the production of the flammable gas is high, and the production capacity is improved, wherein the air is sucked by the negative pressure generated by suction of the flammable gas with the vacuum pump.

The invention relates to the technical field of ingot casting of solar energy batteries, in particular to a production method of a large polycrystalline ingot. Silicon nitride and water are mixed uniformly through electric mixing for 15-30 minutes, and the mixture is used as a coating liquid, the coating liquid is uniformly coated on the inner surface of a crucible after the crucible is preheated, and then high-temperature baking is carried out on the crucible, a silicon material is loaded in the baked crucible, and then charging is carried out on the crucible loaded with the silicon material, shielding gas-argon passes through a polycrystalline furnace after vacuumizing is carried out on the polycrystalline furnace, the polycrystalline furnace is heated to melt the silicon material, and then, the melted silicon material is gradually crystallized from the bottom part to the top part through directional solidification, and then discharging is carried out after gradual cooling is carried out through high-temperature annealing, the crucible is disassembled after the discharged polycrystalline ingot is cooled at room temperature, so as to obtain the polycrystalline silicon ingot whichis sliced to prepare the battery. The large charging amount is realized, the capacity of the casting ingot is improved, the utilization rate of the polycrystalline ingot is improved, the cost is reduced, the requirements of a high-load slicer are met, and the crystal quality is kept to be unchanged.

The present invention discloses a separation method for high-content omega-3 fatty acid ethyl ester from ethyl ester type crude fish oil. According to a method in the prior art, the dissolved amount of a raw material in a non-polar solvent is small, so that the charge amount of the raw material in a reaction is small, the production efficiency is low, and the production cost is high. According to the method of the present invention, a polar solvent is used as a raw material solvent, a non-polar solvent is used as a detergent, and a solvent that is the same as the raw material solution is used as an extractant in an extraction section; and according to a liquid-liquid extraction principle, by adopting multistage countercurrent technology, high-purity omega-3 fatty acid ethyl ester is prepared and purified from fish oil with different purity levels of omega-3 fatty acid ethyl ester. The method disclosed by the present invention is simple in operation, small in three-waste discharge and easy for industrial production.

The invention belongs to the technical field of neodymium-iron-boron magnets, and particularly discloses a neodymium-iron-boron magnet grain boundary diffusion method which comprises the steps that a neodymium-iron-boron blank is subjected to cleaning and activation pretreatment; sequentially depositing a heavy rare earth element film layer, a non-rare earth element film layer and a high-temperature-resistant inorganic film layer on the surface of the pretreated diffusion substrate; and sequentially carrying out thermal diffusion and tempering treatment on the multi-layer thin film diffusion substrate to obtain the sintered neodymium-iron-boron magnet. The heavy rare earth element-non-rare earth element-heat-resistant inorganic film is deposited on the surface of the magnet through the magnetron sputtering method, then the non-rare earth element permeates into the heavy rare earth element film layer through the thermal diffusion permeation technology, multi-element heavy rare earth alloy is formed, the melting point of a heavy rare earth compound is reduced, the infiltration capacity of the heavy rare earth element is enhanced, and the magnetic hardening layer is formed; non-rare earth elements refine grains, irreversible magnetic loss is reduced, an inorganic film forms a protective layer, element oxidation is avoided, adhesion caused by contact between magnets during grain boundary diffusion is prevented, and the charging amount of a material box is increased.

The invention discloses a method for performing anti-wear treatment on a hopper of a loading machine, which comprises the following steps: using a low-carbon steel or low-alloy steel plate as a base plate, selecting a build-up welding flux-cored soldering wire of which the diameter is between 2.0 and 4.0 millimeters special for the hopper of the loading machine, and welding a wear-resisting layerof which the thickness is between 3.5 and 8.0 millimeters on the base plate by adopting a visible arc build-up welding or gas coverage build-up welding process to prepare a wear-resisting composite steel plate; by adopting a plasma cutting device, cutting out a left wear-resisting plate and a right wear-resisting plate in a right trapezoid shape respectively, a middle wear-resisting plate in an isosceles trapezoid shape, and two bottom plates in isosceles trapezoid shapes on the wear-resisting composite steel plate; leveling the plates; and putting the cut wear-resisting layers of the left wear-resisting plate, the middle wear-resisting plate, the two bottom plates and the right wear-resisting plate outwards, and welding the wear-resisting layers on the outside surface of the hopper bottomof the main cutting board side of the hopper respectively through gas shielded arc welding or welding rod arc welding so that the wear-resisting layers are integrated with the original hopper bottominto a whole. After the treatment by the method, the service life of the hopper is greatly improved, the frequent maintenances are avoided, the working efficiency of the loading machine is improved, and steel materials are saved.

The invention relates to a heat preservation ageing device. During ageing treatment of a metal product, the natural ageing time is relatively long, and during drying oven ageing, the charging capacity is small, the product needs to be transferred after ageing, the labor intensity of workers is high, and the working efficiency is low. Therefore, the heat preservation ageing device comprises a large-scale charging container, wherein an ageing bin is arranged in the large-scale charging container and comprises an ageing bin top plate, an ageing bin bottom plate and a plurality of ageing bin division plates; a temperature measuring set for measuring the temperature in the ageing bin is arranged on the ageing bin top plate; a plurality of ageing containers are arranged on the ageing bin division plates; a temperature control heating device is arranged below each ageing container; and a tray for placing a product subjected to deep processing is arranged in each ageing container. The heat preservation ageing device is simple in structure, scientific in design and convenient to use, and can be used for controlling temperature singly, and the charge amount is greatly increased, so that the working efficiency is improved, the labor intensity of workers; and the heat preservation ageing device has good practical application values and popularization values.

The invention discloses a method for preparing a dissolving pulp used for viscose fiber by using a mulberry twig stem core, which comprises the following steps: preparing raw materials, steaming, washing the raw materials, concentrating, boiling, extruding pulp, screening, alkali refining, bleaching, carrying out acid treatment, washing, second cleaning, pulping to prepare the finished pulp. The method of the invention has the advantages that the method for preparing the dissolving pulp by using the mulberry twig stem core avoids the problem that the product quality and yield can be influenced by over violent or insufficient boiling condition which is caused by the different structures of the mulberry twig and the mulberry twig stem core during the whole stem pulping process. The method of the invention is capable of increasing the charge amount of a boiling device, reducing the subsequent boiling strength, reducing the pollution and effectively alleviating a shortage problem of raw materials used for producing viscose fiber in the prior art.

The invention relates to a preparation method of low-cost high-performance lithium iron phosphate. The method comprises the steps of carrying out high-energy smashing and nanocrystallization on an iron source in advance, then weighing a lithium source, the iron source and a phosphorus source according to the molar ratio of (1.01-1.03): 1: 1, doping a titanium source or a magnesium source with themolar ratio of (0.01-0.02), then adding a carbon source with the mass fraction of (4-10)%, and performing high-energy smashing and sufficient mixing; tabletting and granulating a mixed material to obtain a flaky precursor; putting the precursor into a kiln for sintering, controlling the temperature to rise to 730 DEG C within 0.5-4H under the protection of an inert gas atmosphere, keeping the temperature at 730 DEG C for calcining for 0.5-4H, and then cooling to room temperature along with the furnace to obtain a carbon-coated lithium iron phosphate material; and finally, crushing the preparedlithium iron phosphate, crushing, screening and removing iron to obtain a lithium iron phosphate finished product with particles in approximate normal distribution. The lithium iron phosphate is prepared by directly mixing and fusing dry powder, the process is simple, the sintering time is shortened, and compared with a wet complex production process and higher equipment investment, the preparation method can reduce the cost by more than 30%.