117results about How to "Uniform grain" patented technology

The invention provides low-yield-ratio super-thick maritime work steel with excellent core low-temperature toughness and a manufacturing method of the low-yield-ratio super-thick maritime work steel, and belongs to the field of steel and iron material preparation. The low-yield-ratio super-thick marine steel with the excellent core low-temperature toughness comprises the following chemical components in percentage by mass: 0.10%-0.15% of C, 0.35%-0.45% of Si, 1.20%-1.50% of Mn, 3.00%-3.50% of Ni, 0.30%-0.50% of Mo, 0.15%-0.3% of Cr, 0.01%-0.02% of Ti, 0.030%-0.040% of V, 0.050%-0.060% of Nb, 0.0016%-0.0020% of B, 0.15%-0.25% of Cu, 0.060%-0.070% of Al, less than or equal to 0.010% of P, less than or equal to 0.004% of S, less than or equal to 0.39% of CET and the balance of Fe and inevitable impurities. According to the invention, a component design thought of a low-C, Ni-Nb-Mo-Al-B system is adopted, and a three-section rolling and quenching and tempering heat treatment process is combined. Through strict control of smelting continuous casting, controlled rolling and controlled cooling processes and quenching and tempering heat treatment parameters, the super-thick marine steel with excellent comprehensive mechanical properties is successfully prepared. The steel shows good low-temperature toughness in the core part, and meanwhile, the steel has a relatively low yield ratio. According to the low-yield-ratio super-thick maritime work steel with the excellent core low-temperature toughness, the thickness range is 80-150 mm, the yield strength is larger than or equal to 690 MPa, the tensile strength is larger than or equal to 920 MPa, the percentage elongation after fracture is larger than or equal to 20%, the yield ratio is smaller than or equal to 0.77, and the impact energy KV2 at the temperature of-60 DEG C is larger than or equal to 80 J.

The invention provides a method for preparing active copper oxide by recycling ammonia and carbon. The method comprises the following steps: step 1, preparing a copper dissolving reagent from ammonia water and carbon dioxide; 2, the copper raw material and a copper dissolving reagent are mixed, oxygen or air is introduced, heating and pressurizing are carried out for an ammonia leaching complexing reaction, and a copper ammonia complex is obtained; step 3, after the copper ammonia complex is filtered, rectifying to remove ammonia and carbon, producing ammonia gas and carbon dioxide at the tower top, and producing basic cupric carbonate slurry at the tower kettle; 4, centrifuging and drying the basic cupric carbonate slurry to obtain a basic cupric carbonate solid; and 5, calcining the basic cupric carbonate solid at high temperature to produce active copper oxide. According to the active copper oxide preparation method capable of recycling ammonia and carbon, the active copper oxide with high purity and uniform particle size can be directly prepared.

The invention discloses a forging forming method and die for a large hinge beam die forging for an airplane, and relates to the technical field of forging. According to the specific technical scheme, the method comprises the steps of heating before forging, cast ingot forging changing, machining, blank making heating, forging blank making, saw cutting, polishing damage repairing, first heating number heating of die forging, first heating number forging of die forging, first trimming, first corrosive washing damage repairing, second heating number heating of die forging, second heating number forging of die forging, second trimming, second corrosive washing damage repairing and size detection. According to the forging forming method for the 7050 aluminum alloy large hinge beam forge piece for the airplane, the forge piece which is qualified in size and uniform in structure property is obtained, and the use requirement is met.

The invention discloses a GH738 alloy bar large-deformation semi-continuous efficient rolling device and technology. The requirements for the grain size and the durability are met at the same time by optimizing the heating and deformation technology in the semi-continuous rolling process. A large-deformation semi-continuous efficient rolling device and a corresponding process are adopted, wherein the large-deformation rolling is 50%-80%; heat is supplemented in the rolling process, and the blank temperature is increased; the finish rolling temperature is increased; and the rolled blank is rapidly heated by an induction coil, and hot straightening is carried out. The method disclosed by the invention has the beneficial effects that (1) the mode of large deformation and heat compensation by using a heating furnace midway is adopted, and the standard grain size requirement of grade 3-grade 6 is met; (2) the rolled blank is heated through an induction coil to be rapidly heated, hot straightening is carried out, and the roundness and the size of the bar are improved; and after standard heat treatment, a surface stress layer cannot be generated due to straightening, so that a coarse-grain ring cannot be generated.

The invention relates to the technical field of soft magnetic ferrite materials, and particularly discloses a NiCuZn-MgO composite material and a preparation method thereof. The NiCuZn-MgO composite material comprises main components and additives, and the main components comprise the following components in percentage by weight: 36-72 wt% of Fe2O3, 13-16 wt% of ZnO, 6-9 wt% of NiO, 3-6 wt% of MgO and the balance of CuO; based on the total weight of the main components, the additive comprises the following components in percentage by weight: 0.5 to 1.5 weight percent of Bi2O3, 0.3 to 1.5 weight percent of SiO2 and 0.3 to 1.5 weight percent of CaO. According to the NiCuZn-MgO composite material prepared by the invention, the cost of soft magnetic ferrite can be reduced, and the NiCuZn-MgO composite material has high magnetic conductivity and high Bs.

The invention provides a precision forging method for an adjustable blade of an aero-engine based on titanium alloy, which can realize precision forging forming of the blade of the titanium alloy aero-engine, enables the blade profile size of a blade forging to directly reach the size of a finished product, does not need to be machined again, is high in product percent of pass and good in air passage consistency, also can keep the continuity of a metal flow line, and is suitable for large-scale production. The mechanical property and the aerodynamic performance are high, and the surface integrity and the metallographic structure meet the design requirements. The method comprises the following steps of blanking, surface cleaning, glass lubricant spraying, heating blank making, surface cleaning, glass lubricant spraying and forging, and is characterized in that the forging procedure comprises heating upsetting, heating pre-forging and heating finish forging, and the surface cleaning and glass lubricant spraying are respectively carried out after each procedure of heating upsetting, heating pre-forging and heating finish forging.

The invention relates to a high-formability anodizing 6xxx aluminum alloy plate and a preparation method thereof. The aluminum material is composed of the following components in percentage by mass: 0.2-0.6% of Si; 0.6%-1.1% of Mg; 0.01% to 0.04% of Ti; according to the preparation method disclosed by the invention, by regulating and controlling semi-continuous casting, hot rolling and cold rolling processes, the grain size of the finished aluminum alloy plate is uniform and fine, the average grain size is 20-60 microns, the surface roughness of the plate strip is 0.25-0.45 microns, the glossiness is 350-420 GU, the tensile strength is 70-90 MPa, the yield strength is 30-50 MPa, the elongation is 30-45%, and the hardness HV is 25-45; and after the plate is subjected to subsequent room-temperature stamping forming, the surface quality is excellent, the defects of scratches, orange peels, cracks and the like are avoided, and the technical requirements of high-end products on appearance decoration surfaces are met.

The invention belongs to the field of ceramic materials, and particularly discloses a preparation method and application of barium titanate powder, the preparation method comprises the following steps: S1, sanding preparation raw materials comprising a barium source, a titanium source and a solvent at a sanding rotation speed of 600-1000 rpm by using a grinding ball A for 15-30 h to obtain primary slurry; s2, heating the primary slurry to 40-100 DEG C, and keeping the temperature for 2-10 hours; s3, carrying out high-energy ball milling for 0.5-3 hours by adopting a grinding ball B at the rotating speed of 1000-1400 rpm, so as to obtain secondary slurry; and S4, calcining the secondary slurry to obtain the barium titanate powder. According to the preparation method, the steps of sanding, heating, heat preservation and high-energy ball milling are adopted, the dispersion degree and uniformity of the barium titanate micronucleus, the titanium source and the barium source in the slurry are improved, so that uniform growth of barium titanate crystal grains in the calcination process is achieved, and finally the superfine barium titanate powder with uniform crystal grains and high tetragonal phase content is obtained.

The invention belongs to the technical field of aviation annular forge piece forming, and particularly discloses a Haynes 242 forge piece with a uniform structure and a forming method of the Haynes 242 forge piece, and the forming method comprises the following steps of blanking, upsetting and punching, trestle chambering and end face flattening, rolling and heat treatment. In the upsetting punching process, the blanked blank is heated to the first forging temperature of 1020-1060 DEG C; in the mandrel supporter chambering flat end face, the blank is heated to the second forging temperature of 1020-1060 DEG C, and the forging deformation is 10%-15%; rolling comprises prefabrication and finish rolling, in the pre-rolling process, heating is conducted till the third forging temperature ranges from 1020 DEG C to 1060 DEG C, rolling is conducted through at least one heating number, and the rolling deformation of each heating number is controlled to range from 10% to 20%; and the blank is heated to the fourth forging temperature in a step heating mode in the final rolling process, the fourth forging temperature ranges from 1030 DEG C to 1050 DEG C, the forging deformation ranges from 10% to 15%, the appearance shape of the obtained Haynes242 forged piece meets the part machining size requirement, cracks are few in the production process, and the uniform structure and mechanical performance meeting the standard requirement are obtained.

The invention relates to the technical field of hybrid welding, in particular to a laser and TIG magnetic control hybrid welding process for a nickel-based alloy pipe production line, which comprises the following steps: pipe manufacturing, preparation, conveying and preheating, welding and cooling, equipment comprises a dust-free welding chamber and a welding pipe, a welding mechanism is arranged in the dust-free welding chamber, and the welding pipe is arranged in the dust-free welding chamber. The welding mechanism comprises a high-frequency pulse TIG welding gun and a laser transmitter, a magnetic field mechanism is arranged in the high-frequency pulse TIG welding gun, and a tungsten electrode end is arranged at the end, away from the adjusting frame, of the high-frequency pulse TIG welding gun. The method has the advantages that optical fiber laser welding is combined with the high-frequency pulse TIG arc and external alternating magnetic field technology, the welding speed is remarkably increased, rapid heating is achieved through optical fiber laser welding, the stirring and mixing effects of a molten pool are enhanced through adding of the high-frequency pulse TIG arc and the alternating magnetic field, the alternating magnetic field stirs the interior of the molten pool, grains are refined, and the overall performance of a welding seam is improved; therefore, thermal stress and deformation of weld metal are reduced, and welding efficiency and quality are improved.

The utility model discloses a granulation device with uniform granulation, which belongs to the technical field of granulation devices and comprises a stirring device, a drying device and a slicing device, the stirring device is used for stirring liquid mixed raw materials, the drying device is arranged on the side edge of the lower end of the stirring device, and the slicing device is arranged below the drying device. The drying device is provided with a discharging connector, the discharging connector inclines downwards by 45 degrees and is connected to the side edge of the lower end of the stirring device, the discharging connector is sleeved with a discharging pipe, the discharging pipe is sleeved with a heating resistance wire, the heating resistance wire is connected with a power source, the discharging connector and the discharging pipe are each provided with a valve, and the slicing device is provided with a first telescopic blade. According to the utility model, the structure is simple, the different requirements of the market are met, the quality of produced particles is improved, the economic benefit is increased, and the device can be widely applied.

The invention provides benzoyl peroxide gel and a preparation method thereof. The preparation method comprises the following steps: S1, preparing an active phase; s2, preparing a gel phase; s3, mixing half of the active phase with the gel phase, and performing constant-temperature water bath to obtain low-crosslinking-degree gel; s4, uniformly granulating the low-crosslinking-degree gel, mixing the low-crosslinking-degree gel with the balance of the active phase, and performing vacuum negative-pressure stirring twice to obtain a material; and S5, adding a pH regulator into the material, regulating the pH value, discharging and filling. Nanocrystals are formed through benzoyl peroxide pretreatment, the surface area and activity are improved, the curative effect is enhanced on the premise of safety, uniform dispersion can be achieved, the stability of benzoyl peroxide in gel is improved, and the storage time is prolonged. A part of the active phase and the gel phase are mixed to form low-crosslinking-degree gel, the low-crosslinking-degree gel is uniformly granulated and then mixed with the remaining active phase, and the benzoyl peroxide gel is prepared through vacuum negative pressure, so that the swelling property can be improved, the stability and the permeability can be improved, and adverse reactions such as irritation to skin can be avoided.

The invention relates to a preparation method of a copper-phosphorus alloy, in particular to the field of copper-phosphorus alloys, and the preparation method comprises the following steps: carrying out vacuum melting on a copper material, adding a copper-phosphorus intermediate alloy, then carrying out cooling and heating operations for at least three times, and casting to obtain the copper-phosphorus alloy, wherein the cooling and heating operation comprises cooling, first heat preservation, heating and second heat preservation which are carried out in sequence; the initial temperature of cooling ranges from 1200 DEG C to 1300 DEG C; the cooling range is 90 DEG C to 120 DEG C; the temperature rise range is 90 DEG C to 120 DEG C. According to the preparation method provided by the invention, by adopting the designed preparation process and by virtue of specific temperature lowering and raising operation, preparation of the copper-phosphorus alloy cast ingot with uniform phosphorus distribution and uniform grain distribution is realized, and the utilization effect of the copper-phosphorus alloy is favorably improved.

The invention relates to the technical field of ceramic cutters, in particular to a SiC whisker toughened aluminum oxide ceramic cutter and a preparation method thereof. The invention relates to a SiC whisker toughened aluminum oxide ceramic cutting tool. The SiC whisker toughened aluminum oxide ceramic cutting tool consists of aluminum oxide ceramic powder, silicon carbide whiskers and toughening auxiliary powder, the toughening auxiliary powder is prepared from the following raw materials in parts by weight: 20 to 30 parts of ferrotitanium slag and 6 to 10 parts of chromium sesquioxide. The SiC whisker toughened aluminum oxide ceramic cutter provided by the invention is compact in structure and has more excellent fracture toughness at the same time.

The invention discloses a preparation method of a large-size fine-grain yttrium target material, which comprises the following steps: carrying out vacuum melting to obtain a metal yttrium cast ingot, and carrying out surface machining to obtain a metal yttrium blank; the metal yttrium blank is subjected to vacuum heat treatment and vacuum forging, and then a metal yttrium forge piece is obtained; carrying out isothermal rolling on the metal yttrium forge piece in a protective atmosphere, and carrying out heat treatment in the protective atmosphere to obtain a metal yttrium rolled piece; and carrying out dry cutting on the metal yttrium rolled piece to obtain the yttrium target material. The metal yttrium target obtained through the preparation method is large in finished product size range and good in flatness, toughness is improved while strength is improved, crystal grains are small, the crystal grain size is uniform, compactness is good, the surface is smooth and free of defects, the purity and components of raw materials cannot be changed, the sputtering face is compact, and sputtering performance is good.

The invention discloses a FeCoNbW alloy target material and a hot-pressing preparation method thereof, and belongs to the technical field of magnetic storage target material manufacturing. The method comprises the following steps: carrying out vacuum melting on Fe blocks, Co blocks and Nb blocks, and then carrying out gas atomization to obtain FeCoNb alloy powder; the FeCoNbW alloy target material is obtained by mixing the FeCoNbW alloy powder and W powder, and then sequentially carrying out sheathing, die filling, degassing, hot pressed sintering and machining on the FeCoNbW alloy powder and the W powder. The W powder is added into the FeCoNb alloy powder to be combined into mixed powder of target components, the FeCoNb alloy powder forms metal alloy due to the components, demagnetization can be achieved, and the final magnetic permeability of the target material is improved. And then target blank sintering is conducted in a vacuum hot pressing sintering mode, the problems that components are not uniform, the target blank cracks during conventional plastic deformation and the magnetic permeability is low are solved, and the yield of the FeCoNbW alloy target is effectively increased.

The invention discloses an Al-Cu-Mg-Fe-Ni aluminum alloy bar as well as a preparation method and application of the Al-Cu-Mg-Fe-Ni aluminum alloy bar. The aluminum alloy bar comprises the following components in percentage by weight: less than or equal to 0.02% of Si, 0.7%-0.9% of Fe, 1.8%-2.1% of Cu, 1.3%-1.4% of Mg, 0.02%-0.08% of Ti, 0.7%-0.9% of Ni, more than or equal to 0.1% and less than or equal to 0.2% of Mn + Cr + Zr, and the balance of Al and inevitable impurities. The single impurity is less than or equal to 0.05%, the total impurity is less than or equal to 0.1% and the balance is Al, and the total percentage is 100%. When the aluminum alloy bar is extruded, the heating temperature of the head of the aluminum alloy ingot is higher than that of the tail; the front-section extrusion speed of the ingot is higher than the rear-section extrusion speed. Metal grains in the aluminum alloy bar are fine and uniform, the use requirements of the grains are met, the tensile strength of the bar is larger than or equal to 355MPa, and the ductility is larger than or equal to 8.0%.

The utility model relates to the technical field of feed processing, and discloses a feed granulator with uniform granulation, which comprises a processing barrel, an extrusion mechanism is arranged at the bottom of the processing barrel, a servo motor is arranged to drive an auger to rotate, and a speed reducer is arranged to reduce the load of the servo motor so as to ensure that the servo motor can operate stably, so that the production efficiency is improved. The bottom of the processing barrel is arranged to be a conical surface so that enough pressure can be guaranteed when the auger is used for extruding, the extrusion disc is arranged so that strip-shaped feed can be conveniently extruded through the extrusion holes when the raw materials in the processing barrel are pressurized, and then the strip-shaped feed is cut through the cutting knife so that granular feed can be processed and formed; and the rotation angle of the stepping motor is set to be 45 degrees, so that one group of cutting knives blocks the extrusion holes after each cutting of the cutting knives, the extruded feed is more compact, and blocking and cutting are repeated alternately to form compact particles with uniform sizes.

The embodiment of the invention discloses a high-strength corrosion-resistant CuNi10Fe1Mn alloy copper pipe and a preparation method thereof, relates to the technical field of non-ferrous metal material manufacturing, and aims to solve the technical problem of poor production in the prior art. According to the high-strength corrosion-resistant CuNi10Fe1Mn alloy copper pipe, the content of Ni ranges from 9.0% to 11.0%, the content of Fe ranges from 1.0% to 2.0%, the content of Mn ranges from 0.5% to 1.0%, the sum of impurity elements does not exceed 0.2%, and the balance is Cu.

The invention discloses an iron-based alloy composite wear-resistant material for preparing a roller sleeve flux-cored wire, and relates to the technical field of surfacing materials, the iron-based alloy composite wear-resistant material comprises the following raw materials by mass percentage: 52-58% of high carbon ferrochrome, 1-3% of chromium nitride, 1-2% of graphite, 8-11% of aluminum powder, 0.8-1.5% of nano yttrium oxide, 1-2% of modified carbon fiber, and the balance reduced iron powder; the modified carbon fibers are cerium oxide / reduced graphene oxide composite material modified carbon fibers. The nano yttrium oxide and the modified carbon fibers are added into the iron-based alloy composite wear-resistant material for preparing the roller sleeve flux-cored wire material, so that the hardness, toughness and wear resistance of the surfacing alloy material for the roller sleeve are effectively enhanced, and the wear loss of the surfacing alloy for the roller sleeve is remarkably reduced.

This invention discloses a method for preparing high-elongation bars for cold forging, belonging to the field of aluminum alloy preparation technology. Through optimization of composition and process, the prepared bars possess high purity, uniform and fine equiaxed grain structure, and excellent plasticity, with significantly improved elongation. This meets the stringent requirements of cold forging for high material plasticity, resulting in a bright, crack-free surface and uniform grains after cold forging, overcoming problems such as oxide scale, coarse grains, and poor dimensional accuracy caused by hot forging. Furthermore, the introduction of modified talc and sodium nitrate as refining agents further promotes uniform microstructure, achieving high elongation and excellent cold forging performance.

The present invention relates to the field of pharmaceutical technology, and in particular to a method for preparing compound glycyrrhizin tablets, comprising: taking a certain amount of glycine raw material, crushing it and then sieving it; taking a certain amount of ethanol, adding a certain amount of ethyl cellulose while stirring until it is added, stirring for a preset time, and then standing for a period of time to obtain an ethyl cellulose ethanol solution; pouring the sieved glycine raw material into an airflow mixing bin, chopping and dry mixing, adding a certain amount of ethyl cellulose ethanol solution for wet mixing and granulation to make soft material particles; continuing to granulate the soft material particles to make wet whole particles; drying the airflow mixing bin and then cooling it to make dry whole particles; adding a certain amount of magnesium stearate to the dry whole particles to mix them to generate an intermediate product; and coating the intermediate product after tableting to make compound glycyrrhizin tablets. The present invention changes the stirring process to airflow mixing, increases the detection of relevant preparation parameters in the airflow mixing bin, and improves the quality of compound glycyrrhizin tablets as a whole.

The present application relates to the technical field of ceramic tools, and more specifically, it relates to a SiC whisker toughened alumina ceramic tool and a preparation method thereof. A SiC whisker toughened alumina ceramic tool, the SiC whisker toughened alumina ceramic tool is composed of alumina ceramic powder, silicon carbide whiskers and toughening auxiliary powder; the toughening auxiliary powder includes the following raw materials in parts by weight: 20-30 parts of ferro-titanium slag and 6-10 parts of chromium trioxide. The SiC whisker toughened alumina ceramic tool of the present application has a dense structure and has better fracture toughness.

The invention discloses a wheel forging and rolling composite forming process based on deformation distribution and a structure regulation and control method, and belongs to the technical field of wheel manufacturing. The method comprises the steps that a composite forming path of pre-forging, finish forging and finish rolling is adopted, the deformation amount of each procedure is scientifically distributed, pre-forging accounts for 70%-80%, finish forging accounts for 15%-20%, and finish rolling accounts for 5%-10%, so that forming precision and microstructure control is achieved. Meanwhile, quantitative prediction is carried out on microstructure evolution in the whole forming process by constructing a multi-scale digital simulation platform integrating a material constitutive model, a microstructure evolution model and a cellular automaton. And based on a prediction result, active and accurate regulation and control of microstructures of different parts of the wheel are realized through virtual iteration optimization of key process parameters such as temperature, deformation and strain rate, and finally, the complex-structure wheel with high dimensional precision, uniform and fine structure and excellent comprehensive performance is obtained. According to the wheel shape-character collaborative manufacturing method, shape-character collaborative manufacturing of the wheel is achieved, and the scientificity and efficiency of process design are improved.

The invention provides a DBD oxygen plasma method for rapidly sensitizing a semiconductor film at room temperature and application, and belongs to the technical field of material treatment processes. According to the method, the lead selenide thin film is treated by combining specific DBD oxygen plasma conditions, the sensitized semiconductor thin film is successfully prepared, rapid sensitization at the room temperature is achieved, and the problems that an existing PbSe and other IV-VI group compound semiconductor thin film sensitization technology is complex in equipment, tedious in process, high in temperature, long in consumed time and the like are solved. According to the processing method provided by the invention, the grain size of the semiconductor film can be changed, meanwhile, the content of lead oxides in the film is adjusted, the prepared film is smooth in surface and uniform in particle, no obvious defect is observed on the surface, and an infrared detector prepared based on the film is excellent in photoelectric response capability.

The invention discloses a grain size control method of a reclaimed material hard alloy, which comprises the following steps: S1, component analysis of the reclaimed material: the proportion of oversize products is 0-8% when the reclaimed material passes through a 110-120-mesh sieve; s2, burdening according to the use ratio of the reclaimed material being 50%-99% and the ball-to-material ratio being (2-5): 1, carrying out a ball milling test, preparing a sample, and detecting the coercive force; s3, the raw material ratio and the ball-to-material ratio are equal to those in the step S2, and a mixture is obtained through batching and ball milling; s4, the mixture is subjected to compression molding, and a pressed blank is obtained; and S5, the pressed blank is subjected to pressure sintering, and the reworked material hard alloy with the grain size being 2.0-3.0 microns is obtained. The method is simple and easy to implement, the grain size of the regenerated material can be accurately judged, the integrity and uniformity of alloy grains can be ensured, the prepared regenerated hard alloy has good physical performance, the performance very close to that of a raw material alloy can be achieved, and the application field of the regenerated hard alloy is widened.

The invention belongs to the technical field of bearing steel preparation, and particularly relates to a superfine structure 8CrMo4V bearing steel preparation method which comprises the following steps that 1, 8Cr4Mo4V steel is subjected to forging treatment; (2) the forged 8Cr4Mo4V steel is subjected to temperature control rolling; 3, the 8Cr4Mo4V steel is subjected to isothermal quenching ultrafine treatment; and 4, the 8Cr4Mo4V steel is subjected to deep cooling and tempering treatment. Results show that the method can obviously refine original austenite grains and martensite substructures.

The invention provides an aluminum alloy bar reducing casting device and method, and relates to the technical field of casting, the device comprises a tundish, a crystallizer, a structure control device and a traction device; the structure control device is composed of a first sleeve and a cooling module, a reducing cavity is formed in the first sleeve, the inner diameter of the reducing cavity is gradually reduced from the first end to the second end, and the reducing cavity is used for cooling and solidifying the solid-liquid aluminum alloy bar; the traction device comprises a traction head forming die and a power device, the traction head forming die is located at the second end of the reducing cavity, and the power device drives the traction head forming die to move horizontally to pull out the aluminum alloy bar; through plastic deformation and cooling solidification in the reducing cavity, internal defects such as shrinkage porosity of the aluminum alloy are eliminated, grains are refined, and the structure is more compact and uniform; the traction force is improved through tight connection of the traction head and the bar, and the stability of the continuous casting process is enhanced; and the traction rate is accurately adjusted by the power device, so that the aluminum alloy bar which is compact in structure and small and uniform in grain size can be obtained.

The invention discloses a zinc oxide-based sputtering target material as well as a preparation method and application thereof, and belongs to the technical field of zinc oxide-based sputtering target materials. The preparation method comprises the following steps: smelting a magnesium ingot and a zinc ingot to obtain an alloy ingot; preparing the alloy ingot into magnesium oxide-doped zinc oxide powder by adopting a plasma gasification oxidation mode, and then preparing slurry from the zinc oxide powder, gallium oxide and rare earth oxide; and carrying out drying, compression molding, cold isostatic pressing and sintering on the slurry. Through smelting, sufficient solid solution of magnesium in zinc can be promoted, and the magnesium oxide doped zinc oxide powder with high solid solubility can be obtained. The doped magnesium oxide can regulate and control the forbidden bandwidth of zinc oxide, and better photoelectric properties of the film are obtained. By doping gallium oxide and rare earth oxide, n-type doping can be realized, weakly bound free electrons are introduced, the carrier mobility of zinc oxide is improved, and the resistivity of the material is reduced. The prepared zinc oxide-based target material is high in density, fine in crystal grain and uniform in organization structure, and the TCO thin film with excellent performance can be prepared easily.

The invention discloses semi-solid pulping equipment and a semi-solid pulping method. The semi-solid pulping equipment comprises a sealed liquid storage tank with a liquid storage cavity, a gas-liquid mixing device and a negative pressure defoaming device, the liquid storage cavity is used for storing molten metal, a first air inlet is formed in the top end of the sealed liquid storage tank and communicates with the liquid storage cavity, and a first liquid outlet is formed in the bottom of the sealed liquid storage tank; the gas-liquid mixing device is provided with a second gas inlet, a first liquid inlet and a second liquid outlet, and the first liquid inlet is communicated with the first liquid outlet; the negative pressure defoaming device is communicated with the second liquid outlet; heat insulation coatings are arranged in the sealed liquid storage tank, the gas-liquid mixing device and the negative pressure defoaming device, when inert gas is injected into the liquid storage cavity, molten metal stored in the liquid storage cavity is pressed out of the liquid storage cavity and flows into the gas-liquid mixing device, the molten metal in the gas-liquid mixing device is mixed with the inert gas, and the mixture flows into the negative pressure defoaming device. Therefore, bubbles are removed, and bubble-free semi-solid slurry with uniform crystals is generated.