58results about How to "Promote homogenization" patented technology

The invention relates to the technical field of cavitation jet equipment, in particular to a multifunctional cavitation jet test device, which comprises a mounting frame; the circulating water tunnel main body is mounted on the mounting frame, a water tunnel space is formed in the circulating water tunnel main body, and an observation window is formed in the circulating water tunnel main body; the circulating unit is connected to the mounting frame, is connected with the circulating water tunnel main body and is used for changing the liquid flow rate and the liquid pressure in the water tunnel space; the cavitation nozzle is connected with the circulating water tunnel main body and located in the water tunnel space, and cavitation jet flow emitted by the cavitation nozzle is located in an interval right opposite to the observation window; the device has the advantages that the high-speed camera can conveniently shoot and record the cavitation formation, development and collapse process of the cavitation jet flow in different liquid flow states through the observation window, the cavitation jet flow can be conveniently emitted through the cavitation nozzle, and the circulating water tunnel main body and the circulating unit are matched to complete the research on the influence of the flow field characteristics on the cavitation jet flow action mechanism.

The invention discloses a surface treatment method for improving corrosion resistance of 304 copper-containing antibacterial stainless steel. The surface treatment method comprises the steps that 1, the surface of a 304 copper-containing antibacterial stainless steel plate to be treated is polished, cleaned and dried; 2, the surface of the plate is subjected to sand blasting treatment, and vibration cleaning is conducted after sand blasting is completed; 3, high-speed static friction treatment is conducted on the surface of the plate; 4, top-layer oxide skin in a static friction influence area on the surface of the stainless steel plate is removed, and light grinding and polishing are conducted; step 5, carrying out final surface cleaning and drying treatment on the 304 copper-containing antibacterial stainless steel plate subjected to surface treatment; according to the method for conducting sand blasting and static friction treatment on the surface of the commercial 304 copper-containing stainless steel, the grain size of the surface of the stainless steel is reduced, the structure uniformity of the stainless steel is improved, the service life of the stainless steel in a corrosive environment is prolonged, the surface treatment method is simple in process, efficient and free of pollution, and the corrosion resistance of the material is obviously improved.

A profiling device for brewing yeast blocks comprises a profiling part, a yeast treading part and conveyor belts, yeast materials are pressed into the yeast blocks in preset shapes by the profiling part, the yeast treading part is used for uniformly mixing the yeast materials, and the conveyor belts comprise a feeding conveyor belt, a profiling conveyor belt and a discharging conveyor belt and are used for conveying the yeast materials or the yeast blocks; the profiling part is provided with a rigid and flat profiling platform, a profiling oil cylinder is arranged on the upper portion of the profiling platform, the profiling face of the upper die is an arc-shaped profiling face or a wavy profiling face, a koji material is pressed and formed after being loaded on the lower die, and the profiling device is suitable for automatic operation, rapid in profiling and good in profile consistency. As the yeast material is firstly treaded by the yeast treading part, internal tissues are fully homogenized, and then the yeast material enters the profiling part to be profiled into yeast blocks, the profiling quality is good, the internal distribution of the yeast material is uniform, and the later-stage bacterium cultivation of bacterial colonies is ideal.

The invention discloses a method for growing tellurium-indium-lead single crystals with low optical absorption and high uniformity by reducing gravity influence, and relates to a growth method of tellurium-indium-lead single crystals. The method aims at solving the problems that according to an existing PIT crystal growth method, crystal cracking is serious, optical absorption is high, and elements in crystals are not evenly distributed. The method comprises the following steps: putting a Pb source, an In source, a Te source and extra In2Te3 into a cylindrical crucible, adding elemental Te into a quartz tube, and melting and sealing; putting the quartz tube into an inclined single-temperature-zone tubular furnace for reaction to obtain PIT polycrystals, then putting the polycrystals into a pyrolytic boron nitride crucible with a seed crystal trap, putting the pyrolytic boron nitride crucible into the quartz tube, and performing vacuum sealing; and performing single crystal growth in a multi-temperature-zone horizontal crystal growth furnace to obtain the PIT single crystal. The transmittance of the cut double-sided polished wafer with the thickness of 6 mm is close to 60% within the wave band of 2-3 microns, the optical absorption at the position of 2.09 microns is smaller than 0.11 cm <-1 >, and the double-sided polished wafer can be applied to the fields of industry, medical treatment and energy.

The invention discloses a marinated food processing unfreezing and cleaning device which comprises an unfreezing and cleaning mechanism, a feeding support, a discharging support and a frozen food containing frame, the feeding support is arranged at the front end of the unfreezing and cleaning mechanism, and the discharging support is arranged at the rear end of the unfreezing and cleaning mechanism; the unfreezing and cleaning mechanism comprises an unfreezing and cleaning pool and an undercarriage, the undercarriage is movably arranged on the unfreezing and cleaning pool, the rear end of the unfreezing and cleaning pool is fixedly connected with a filtering water pool, and one end of the filtering water pool is flush with the unfreezing and cleaning pool. The electric hydraulic push rod is used for driving the undercarriage and all the transfer rollers to be matched, stable transfer of the frozen food containing frame among the feeding support, the undercarriage and the discharging support at different positions is achieved, feeding and discharging of frozen food and immersion and extraction of the frozen food in an unfreezing and cleaning pool can be easily completed, the whole operation process is clear, and the working efficiency is improved. And the operation convenience of the whole equipment is improved.

The invention discloses a method for preparing a fine-grain high-plasticity Ta-W alloy plate, which comprises the following steps of: adding Sc2O3 powder into Ta-W alloy preparation raw materials, uniformly mixing, then carrying out electron beam melting, and carrying out multidirectional reciprocating die forging, free forging and package rolling to prepare the Ta-W alloy plate. The Sc2O3 powder is added into the raw materials to obtain a fine-grain Ta-W alloy ingot structure, high-temperature multi-direction reciprocating die forging is combined to eliminate columnar crystals after casting to enable the structure to be more uniform, then steel plate coating hot rolling is adopted, oxidation of the Ta-W alloy plate is effectively prevented, and therefore the Ta-W alloy plate is uniform in structure, fine in grain and high in yield. The plasticity of the Ta-W alloy plate is greatly improved, and the TaW10 alloy, the TaW12 alloy and the TaW13 alloy prepared through the method serve as high-temperature structures and functional materials and are suitable for the fields of weapons, aerospace and the like.

The invention relates to a preparation method of Chinese yam fine dried noodles and belongs to the field of Chinese yam fine dried noodle preparation. The preparation method comprises the following steps: grinding pulped Chinese yam by a colloid mill to obtain Chinese yam primary pulp with the water content of 70-75%, kneading the Chinese yam primary pulp and wheat flour, curing, and calendaring to obtain the Chinese yam fine dried noodles. According to the preparation method of the Chinese yam fine dried noodles, a colloid mill is used for grinding Chinese yams, the granularity of the Chinese yams can be properly reduced, the water absorption rate of the Chinese yams can be increased, meanwhile, Chinese yam components can be embedded into gluten networks more easily, the nutritional value of the Chinese yams is guaranteed, the damage effect on the gluten networks is reduced, and then the texture and the eating quality of the Chinese yam fine dried noodles are improved.

The invention discloses a processing method of a large-diameter seamless steel pipe for a nuclear power conventional island. The method comprises the following steps: preparing and smelting raw materials; a centrifugal casting step; post-processing the pipe blank; a finish machining and detection step; the centrifugal casting comprises the following steps: a casting mold pretreatment stage; a centrifugal casting stage; in the pipe blank cooling and solidifying stage, the rotary hot extrusion part is introduced into an inner cavity of the pipe blank, the outer wall of the rotary hot extrusion part is further coated with a heat insulation coating, and when the rotary hot extrusion part rotates, at least one working part on the outer wall of the rotary hot extrusion part and the inner wall of the pipe blank periodically move close to or away from each other in the radial direction; therefore, the rotary hot extrusion part can apply periodic radial compaction force to the inner wall of the pipe blank. Acting force can be directly applied to the inner wall of the hollow pipe blank in the cooling and solidification stage of the hollow pipe blank, the quality of the inner wall is fundamentally improved, and the hollow pipe blank of the high-quality large-diameter seamless steel pipe with the smooth inner wall, the compact structure and the uniform performance is produced.

The invention discloses a sintering furnace suitable for hard alloy machining, and belongs to the technical field of sintering furnaces. The hard alloy sintering furnace comprises a sintering furnace body, and a heating mechanism used for melting hard alloy and a slag removing mechanism assisting in melting the hard alloy are arranged in the sintering furnace body; the heating mechanism comprises a sleeve, a crucible is arranged in the sleeve, and the periphery of the crucible is sleeved with a smelting coil used for heating the crucible. The slag removal mechanism comprises a slag removal straight barrel, a slag removal rod is rotationally installed in the slag removal straight barrel, a material smashing end is arranged at the end of the slag removal rod, a sliding groove is formed in the material smashing end, and a moving rod is installed in the sliding groove in a sliding mode; the slag removal mechanism is matched with the casting mold mechanism, melting and separation of hard alloy are accelerated, slag in the crucible is removed, the casting mold mechanism is used for casting and transferring the molten alloy, the sintering process is continuously carried out, repeated vacuum breaking operation does not need to be carried out on the sintering furnace, and the machining efficiency is improved.

The present application belongs to the field of textile printing and dyeing technology, and particularly relates to a polyester fabric continuous pad dyeing device and pad dyeing process, which comprises a pad dyeing frame; a feeding roller is arranged on one side of the top of the pad dyeing frame, and a tension roller is arranged below the feeding roller; through the design of a mixed turbulent flow component, the dye is delivered to the inner and outer rotating rods by a circulating pump to realize dye circulation; the fabric advances to drive the guide wheel to rotate, drives the first driving wheel and the first driven wheel, and makes the inner rotating rod rotate reversely; the spiral plate agitates the dye; at the same time, the motor drives the third driving wheel to drive the axial stirring rod to stir the dyeing liquid in the same direction; the outer rotating rod uniformly sprays the dye; the design of the staggered arrangement of the spiral plates, the liquid outlet holes and the diffusion holes further enhances the mixing effect; multiple components cooperate to stir the dye from multiple directions, avoids stratified precipitation, ensures uniform dye concentration, greatly improves the mixing efficiency compared with the traditional method, effectively solves the dyeing color difference problem, and significantly improves the dyeing uniformity and product quality.

The invention discloses a high-homogenization steel for a high-power wind power yaw bearing ring, a bearing ring and a production process, and belongs to the field of alloy steel. The steel contains C0.47%-0.57%, Si0.40%-0.70%, Mn1.30%-1.50%, Cr0.50%-0.70%, Mo0.35%-0.45%, Ni0.25%-0.35%, Cu0.030%-0.050%, Nb0.010%-0.030%, Ti0.0040%-0.0060%, Al0.015%-0.025%, P≤0.015%, S≤0.010%, N≤0.0080%, O≤0.0040% by weight. In the production method of the steel, normalizing and quenching and tempering are used for heat treatment. The produced bearing ring steel has excellent strength, toughness and contact fatigue performance, and is suitable for yaw bearings for 6MW wind power.

The invention relates to the technical field of solar cell materials, in particular to a perovskite film, a preparation method thereof and a perovskite solar cell. The preparation method of the perovskite film comprises the following steps: preparing a divalent inorganic salt aqueous solution, wherein divalent inorganic salt in the divalent inorganic salt aqueous solution is inorganic salt corresponding to perovskite divalent cations; performing film-forming treatment on the divalent inorganic salt aqueous solution to obtain a divalent inorganic salt film; the divalent inorganic salt film is placed in a methyl ammonium halide solution for soaking treatment, and after drying, the divalent inorganic salt film is coated with a solution containing formamidine halide salt for annealing treatment, and a perovskite film containing organic-inorganic hybrid perovskite is obtained; wherein the methyl amine halide solution contains straight-chain alkyl ammonium halide with 2-5 carbon atoms. According to the invention, monovalent cations in the perovskite film can be uniformly distributed, so that the perovskite film shows relatively large grain size, relatively low charge trap density and relatively long carrier lifetime, and can be well used in a solar cell.

The invention discloses a preparation method of an Al-RE intermediate alloy based on an alloy opposite doping method, which comprises the following steps: firstly, industrial pure aluminum Al and mother alloy Al-90RE are taken as raw materials, the raw materials are dried according to a mass ratio meeting the requirement of Al-(10-50) RE, then, the raw materials are melted by adopting a two-stage variable-temperature melting method to obtain an Al-RE melt, then, the Al-(10-50) RE melt is refined, and meanwhile, the Al-RE intermediate alloy is prepared by adopting an alloy opposite doping method. The steel ingot mold is preheated, and finally, the refined Al-RE melt is poured into the preheated steel ingot mold to be cooled, so that an Al-RE intermediate alloy ingot based on the alloy opposite doping method is obtained; rE is one of La, Ce or La + Ce alloy. The obtained Al-RE intermediate alloy is compact in metallographic structure and less in inclusion; in addition, the yield is greater than 90.0%.

The invention relates to the technical field of endoscopes, and discloses an endoscope image display method, device and equipment and a computer readable storage medium. The method comprises the following steps: acquiring a target image acquired by an endoscope, and displaying the target image in a first display area of a display corresponding to the endoscope; based on the target image, determining a target focus map in a preset focus map database; and displaying the target lesion map in a second display area of the display, so that a doctor completes lesion diagnosis on the target image in combination with the target lesion map. The target image acquired by the endoscope and the target lesion map corresponding to the target image are respectively displayed in the display corresponding to the endoscope, so that doctors can quickly and accurately judge the property of the lesion displayed by the target image, the diagnosis difference between different doctors is reduced, and the homogenization of the overall medical quality is improved.

The invention provides a manufacturing method and equipment of a concrete-red mud composite component, and relates to the technical field of concrete construction and manufacturing, and the method comprises the following steps: placing an inner mold and an outer mold in a vibration module, pouring common concrete in a gap between the inner mold and the outer mold, and pouring red mud concrete in the inner mold. Before solidification, real-time state data of fluidity, compactness, temperature and the like of the two kinds of concrete are collected, and a rheological model is constructed based on the real-time state data and physical data. And analyzing real-time state data, and adjusting the frequency and strength of the vibration module and the rising speed of the internal mold. Before preliminary solidification, the inner mold ascends at a preset speed during vibration, and data are continuously collected to optimize parameters. And after the inner mold completely ascends, the vibration module stops, the double-layer mold stands to form the concrete, and the composite component is obtained. According to the method, data of the two materials are collected in real time, parameters and speed are dynamically adjusted in combination with the model, dynamic collaborative forming is achieved, shearing and compacting are optimized, interface cementation and structure homogenization are promoted, and performance is improved. Compared with a traditional process, the cracking risk is reduced.

The invention relates to a smelting method of an aluminum-free high-temperature alloy, which relates to the technical field of alloy materials, and is characterized in that the contents of oxygen, nitrogen and sulfur elements in a high-temperature alloy melt are gradually reduced by adding different composite deoxidizing and sulfur agents for three times in the smelting process; through two times of refining, melt quenching and tempering treatment and high-temperature purification treatment, removal of oxygen, nitrogen and sulfur elements in the high-temperature alloy melt is promoted, the content of harmful impurities is effectively reduced, segregation of alloy elements is reduced, and the purity and performance of the high-temperature alloy are improved.

The invention discloses a production process for blue glass, and relates to the technical field of blue glass production. The process comprises the following steps: S1, raw material pretreatment: respectively grinding and drying a basic glass raw material, a coloring agent and a functional additive, and then mixing in sequence; s2, melting the mixture in a primary melting furnace in a reducing atmosphere, and adding a reducing agent; s3, transferring the primarily molten glass liquid into a main furnace, and stirring and clarifying in a nitrogen-oxygen mixed protective gas environment; s4, cooling the clarified glass liquid, and continuously stirring and homogenizing; according to the preparation method, the basic raw materials, the coloring agent and the functional additive are accurately proportioned, and control steps of staged mixing, reducing atmosphere melting, multi-stage clarification and homogenization, float forming and the like are combined, so that synergistic improvement of high optical purity and excellent mechanical performance is realized. In the process, the purity, the granularity, the charging sequence and the thermal regulation of the raw materials are strictly controlled, so that the component uniformity and the product consistency are guaranteed.

The invention belongs to the technical field of laser additive manufacturing, and discloses a coaxial fuse laser additive manufacturing device and method based on light spot shape control. The device comprises a light splitting mechanism, a light spot shaping mechanism, a light beam focusing mechanism and the like. The light splitting mechanism is used for splitting a single laser beam into three beams, and light spot brightness uniformization is promoted. A supporting table is arranged in the light spot shaping mechanism, and a driving motor is arranged on the upper portion of the supporting table and drives the rotatable reflecting mirror to rotate at a high speed. During material adding operation, laser beams are shot into the three groups of light spot forming mirror surface walls through the rotatable reflecting mirrors after being split, and different light spots are formed under the reflection constraint of the mirror surface walls. All the lens sets, the motor, the supporting part and the like are hollow, a welding wire penetrates into the hollow area, and light-wire coaxiality is achieved. According to the invention, the three groups of light spot forming mirror surface walls are used for controlling the shape of the light spot, the setting of the hollow area can ensure that the welding wire does not shield the laser beam, and finally, the coaxial fuse wire additive material technology with adjustable and controllable light spots is realized.

The invention discloses a high-generation float glass kiln and a melting process, and relates to the technical field of glass manufacturing. The kiln comprises a melting part and a clarification part which are connected in sequence. The width of the clarification part is smaller than that of the melting part, and a kiln sill is arranged between the clarification part and the melting part; a plurality of electrodes A are arranged on the pool wall and / or the pool bottom of the melting part and a plurality of firing gun holes are arranged on the breast wall for installing firing guns; the clarification part and the melting part are separated by the kiln sill, and during the melting process, the liquid flow which is mainly in the silicate formation and glass formation process is controlled in the melting part, and the liquid flow which is in the clarification process is controlled in the clarification part; the batch material is preliminarily melted in the melting part, and the pre-melted glass liquid enters the clarification part through the kiln sill for high-temperature clarification, and then enters the channel through the liquid flow hole for graded homogenization and cooling, so that the electronic display glass melting without a platinum channel can be realized, and the service life of the kiln and the glass liquid melting effect are greatly improved.

The application discloses a pulse current-based crack-free heat treatment method for additive manufacturing of high-temperature alloy, and belongs to the technical field of heat treatment of additive manufacturing of high-temperature alloy. The application aims to solve the technical problem that nickel-based high-temperature alloy manufactured by additive manufacturing is prone to cracking during the heating process of stress relief heat treatment. The application directly heats the workpiece by using pulse current, and the average heating rate of the workpiece is not less than 100 DEG C / s by applying high-density pulse current, so that the superfast heating far exceeding traditional furnace heat treatment is realized, thereby the precipitation of harmful phase at the grain boundary during the heating process is inhibited, and the cracking problem in the stress relief heat treatment process is fundamentally avoided. The method is especially suitable for nickel-based high-temperature alloy such as IN738LC.

The present invention discloses a method and device for deoxidation in a melt furnace at the end of steelmaking, and belongs to the field of metallurgical technology. Before stopping oxygen blowing at the end of oxygen steelmaking blowing in a top-blown converter or electric arc furnace with oxygen blowing above the molten pool, the present invention adds a powder spraying function to the existing steelmaking furnace bottom blowing inert gas stirring system, and transforms it into a stirring / powder spraying system device as shown in Figure 1 or 2. The stirring gas channel is blown from the bottom of the steelmaking furnace, and the stirring gas is used as a carrier gas to spray carbon powder into the molten pool. 1) The oxygen content in the melt is reduced by the combined action of the carbon-oxygen reaction and its products and the bottom blowing stirring gas, especially the iron oxide content in the slag can be effectively reduced, and 2) the additional smelting cycle time increase and corresponding additional heat dissipation loss caused by static stirring with inert gas are reduced.

The invention relates to the field of cement pole production equipment, in particular to a cement pole assembly clamping brace and a using method thereof.The cement pole assembly clamping brace comprises a mold, a shaft pipe and two sets of clamping mechanisms, the mold transversely extends and is arranged between the two sets of clamping mechanisms, and the shaft pipe penetrates out of the two sets of clamping mechanisms and coaxially penetrates through the mold; the clamping mechanism comprises a rack and a transmission frame, the transmission frame is rotationally arranged in the middle of the rack, a supporting ring is fixed to the outer side of the transmission frame, a locking frame is rotationally arranged in the middle of the supporting ring, and multiple sets of centering arms for clamping the die are arranged in the middle of the locking frame in a surrounding mode. The device has the beneficial effects that external expansion and internal contraction angles of multiple groups of centering arms can be synchronously controlled, so that the device can be adapted to clamping and use of molds with different tapers, the molds, a flange plate and a transmission frame are kept in a coaxial state, the problem that the flange plate and an electric pole cannot be kept coaxial by existing pouring equipment is solved, and the production efficiency is improved. And the consistency of the axes of the assembly joints of the adjacent electric pole sections is ensured.

The invention provides an extrusion screw for producing a PVC cast film and an extrusion device, and belongs to the technical field of extrudes.The extrusion screw comprises a screw body, the screw body comprises a feeding section, a compression homogenizing section, a plasticizing section and an extrusion section which are sequentially arranged in the axial direction of the screw body, first screw flights are distributed on the feeding section, the compression homogenizing section and the plasticizing section, and second screw flights are distributed on the extrusion section; the first screw flight is distributed on the feeding section, the second screw flight is distributed on the extrusion section, a barrier mixing head and a stirring mixing head are arranged on the extrusion section, the barrier mixing head is located between the first screw flight and the second screw flight, the feeding section, the plasticizing section and the extrusion section are all of an equal-diameter shaft structure, the diameter of the feeding section is smaller than that of the plasticizing section, and the compression homogenizing section is of a variable-diameter shaft structure. The diameter of the compression homogenizing section is gradually increased from one end close to the feeding section to one end close to the plasticizing section. The screw has the beneficial effects that the structural design of the screw is reasonable, the mixing and homogenizing effects of materials can be ensured, the materials cannot stay for a long time at high temperature, and meanwhile, the productivity efficiency is ensured.

The preparation method of the wine brewing yeast block comprises the steps of secondary yeast treading and secondary pressing, namely filling a yeast block mold with a yeast material prepared according to a proportion; the bionic koji treading device treads the koji in the koji block mold for the first time; flattening the surface layer of the koji material in the koji block mold after primary koji treading; overturning the koji block mold to enable the bottom of the koji block mold to face upwards; the bionic koji treading device treads the koji material in the koji block mold for the second time; and carrying out compression treatment on the yeast material subjected to secondary yeast treading by a pressing device to prepare a yeast block. The invention further designs a brewing yeast block making system of the process. The method has the advantages that two-time treading and two-time pressing are carried out in the yeast block making process, so that the problem of inconsistent uniformity and compactness of upper and lower layer tissues of the yeast blocks is effectively solved; the bionic koji treading device enables internal tissues of the koji blocks to be well homogenized and high in consistency degree. According to the invention, assembly line work is realized while the advantages of manual yeast treading are reserved, the working efficiency is greatly improved, the production cost is reduced, and the bacterium cultivation effect is good.

A super-large screen changing device for filtering and mixing, characterized in that it comprises an outer shell composed of an inlet plate, an outlet plate and pads clamped between the upper and lower ends of the inlet plate and the outlet plate, a slide plate type filter unit installed in a slideway composed of the outlet plate, the inlet plate and the upper and lower pads, a power mechanism for driving the slide plate type filter unit to reciprocate along the slideway is connected to one side of the slide plate type filter unit through a connecting block; the slide plate type filter unit is provided with a material channel and an integrated porous plate, and a filter screen is provided on the feed side of the integrated porous plate; a petal-type dynamic sealing disk with a hollow structure in the middle part and a sealing auxiliary spring are provided between the mating surfaces of the inlet plate and the slide plate type filter unit, and the feed port and the mixing channel of the inlet plate are of a honeycomb structure; a petal-type static sealing disk with a hollow structure in the middle part is provided between the mating surfaces of the outlet plate and the slide plate type filter unit, and the discharge port and the mixing channel of the inlet plate are of a honeycomb structure.

The invention relates to the technical field of silicone oil water pump production and welding, and particularly discloses a magnetism-isolating silicone oil water pump and a welding device thereof.The magnetism-isolating silicone oil water pump comprises a pump body, the pump body is made of aluminum alloy, a magnetism-isolating shell is further arranged in the pump body, a magnetism-isolating groove is formed in the magnetism-isolating shell, and a magnetism-isolating ring made of permalloy is arranged in the magnetism-isolating groove; and nickel foil transition layers are arranged on the inner and outer peripheral walls of the magnetic isolation groove. The welding device of the magnetism isolating silicon oil water pump comprises a machine body, two welding guns and a rotary lifting table arranged on the machine body, the two welding guns correspond to the inner side and the outer side of a magnetism isolating ring respectively, a clamping tool is detachably arranged on the rotary lifting table, and a first electromagnet opposite to the magnetism isolating ring is arranged on the machine body and located above the clamping tool. The machine body is provided with a cooling mechanism used for cooling the magnetism isolating ring and a detection assembly used for detecting the magnetic permeability of the magnetism isolating ring. The magnetic isolation ring has the effects of reducing the welding difficulty and improving the guiding magnetic circuit of the magnetic isolation ring.

The invention belongs to the technical field of laser cutting, and discloses a laser head and a laser cutting machine. The laser head comprises a main body and an air inlet ring, a mounting cavity is formed in the main body, the air inlet ring is arranged in the mounting cavity, a first air chamber, a second air chamber and a third air chamber are sequentially arranged between the inner wall of the mounting cavity and the outer ring of the air inlet ring, and the volume of the first air chamber is larger than that of the second air chamber and that of the third air chamber; the first air chamber is communicated with an air source, the first air chamber, the second air chamber and the third air chamber are communicated in sequence, and the third air chamber is communicated with an inner ring of the air inlet ring. According to the laser head disclosed by the invention, the gas path is optimally designed, so that the gas is turned for multiple times in the flowing process, the path of the gas flow is prolonged, the homogenization of the gas flow is promoted, and a cutting surface can be smoother. Besides, the first air chamber with the maximum volume is used for primarily homogenizing the entered air flow, so that most turbulence and unstable factors can be eliminated, the air flow noise is reduced, and the working environment is improved.

The invention belongs to the field of material engineering and nanotechnology. More specifically, an improved cast iron and a method of making a cast iron are disclosed. The method of the invention comprises the incorporation of niobium particles in a step prior to the solidification of the cast iron, providing several advantages for known industrial methods. In addition to being applicable to existing cast iron plants without structural reformation, the method of the invention can also produce a wide variety of products in the same plant, which is a result that is very desired in the art and cannot be achieved by conventional methods. The product according to the invention has significant performance. In one embodiment, the product of the present invention is referred to as' Steereon 'as it is cast iron while exhibiting the properties of steel. The products comprise cast iron with niobium particles, have a defined composition, exhibit improved properties, and are beneficial in a variety of applications.

The present invention proposes a method for judging the stage of tobacco leaf baking process, which belongs to the technical field of tobacco leaf baking. The method for judging the stage of tobacco leaf baking process, before actual baking, inputs preset baking parameters of the entire baking process through the control end of the baking room; in the entire baking process of actual baking, according to the calibrated data collection time t of the baking process stage, collects the hyperspectral information of tobacco leaf state index X; and establishes characteristic spectral data of tobacco leaf state index X at the collection time t through the hyperspectral information collected at the time t; compares the characteristic spectral data of tobacco leaf state index X at the actual baking time t with the pre-calibrated hyperspectral information; and judges the stage of the current tobacco leaf baking process through the comparison result. The automation of the stage judgment of the tobacco leaf baking control process can be realized, and the efficiency of judging the stage of the baking process can be improved.

This invention provides a type of glass and its preparation method, belonging to the field of glass technology. The glass batch comprises the following raw materials in parts by weight: 679-713 parts silica sand, 4-40 parts feldspar, 39-59 parts wollastonite, 129-154 parts dolomite, 42-55 parts limestone, 224-231 parts soda ash, 8-10 parts sodium sulfate, and 0.3-0.4 parts carbon powder. This invention can reduce CO2 emissions from float glass production, decrease bubble defects, and improve the quality of the finished glass.