50results about How to "Improve unevenness" patented technology

The invention relates to a welding method of a Q370qENH + S32168 weather-resistant stainless steel composite steel plate. Comprising the steps that the butt joint position of two to-be-welded weather-proof stainless steel composite steel plates is machined into inclined faces, the inclined faces of the butt joint position are spliced into a V-shaped opening, a splash-proof protection belt is pasted, a ceramic liner is placed, base layer bottoming welding is conducted, base layer filling welding is conducted, transition layer welding is conducted, and composite layer welding is conducted. According to the method, it is guaranteed that a welding seam of a base layer base layer welding layer has good weather resistance and mechanical performance, and it is guaranteed that the corrosion resistance of the welding seam is matched with that of a Q370qENH weather-resistant steel base layer; the welding thickness of the transition layer welding layer made of dissimilar materials is controlled, the non-uniformity of the structure of the transition position is improved, the welding stress is reduced, embrittlement and crack generation of the transition layer welding layer are prevented, and it is guaranteed that the transition layer welding layer has excellent plasticity and toughness; and the corrosion resistance requirement of the welding layer of the composite layer is ensured.

The invention relates to the field of evaporation equipment, in particular to a spinning uniform evaporation system, which comprises a cabin body, a substrate frame and a substrate table, and further comprises a revolution and rotation module, an evaporation module and a control module, which are arranged in the cabin body, and the revolution and rotation module comprises a revolution driving mechanism and a rotation driving mechanism which are used for driving the substrate frame; the evaporation material regulation and control module comprises a heating module, an evaporation conduction cavity, a gas concentration detector and an electromagnetic valve and is used for regulating and controlling the diffusion time of the evaporation material; the height adjusting module comprises a main hydraulic lifting rod and an auxiliary hydraulic lifting rod and is used for achieving height adjustment of the substrate frame relative to the evaporation source. The substrate frame rotates while revolving, so that an evaporation material is more uniformly distributed on the surface of the substrate; and the design of the evaporation conduction cavity of the slender cavity is combined with the gas release structure controlled by the electromagnetic valve, so that the evaporation material can be uniformly distributed and deposited on the substrate at a stable rate, and the consistency of the overall film thickness is improved.

The embodiment of the utility model discloses phototherapy equipment. The phototherapy equipment comprises an area light source module and a point light source module, the area light source module emits a first light beam. The point light source module emits a second light beam. At least part of the propagation path of the first light beam coincides with at least part of the propagation path of the second light beam, and the first light beam and the second light beam converge on the coincided propagation path of the first light beam and the second light beam to form a superposed and synthesized light beam. According to the phototherapy equipment, the light beams emitted by the surface light source module and the point light source module are combined and superposed for use, so that the uniformity of phototherapy irradiation of a target treatment area can be ensured, and the defect of low luminous efficiency of a near-infrared light band of the surface light source can be overcome; the irradiation light beams which are within the effective irradiation wave band range, the enough irradiation energy range and uniform irradiation are guaranteed, meanwhile, the device is attached to the target treatment area in a flexible mode, it is guaranteed that the superposed and synthesized light beams evenly and effectively irradiate the target treatment area, and the better treatment effect and rehabilitation effect are achieved.

The invention discloses a method for preparing hexagonal SrFe by liquid phase doping 12 O 19 The invention relates to the field of permanent magnet ferrite preparation, and aims to solve the problem that the existing doping method easily leads to uneven raw material composition and the formation of mixed phases in the magnet; the invention comprises the following steps: 3+ / Sr 2+ Atomic ratio, weigh analytical pure Fe 2 O 3 、SrCO 3 ; The weighed raw materials were placed in a mortar and ground thoroughly to mix; C was added to the resulting mixture 8 H 20 O 4 Si and fully grind and mix evenly; put the ground and mixed powder into a mold for tableting to obtain a cylindrical sample; take the sample and sinter it in a muffle furnace and then cool it to room temperature with the furnace to obtain a liquid-phase doped SrM ferrite block; the present invention can use liquid C 8 H 20 O 4 Si as an additive for liquid phase doping of hexagonal SrFe 12 O 19 The saturation magnetization of ferrite is further improved, and the generation of impurity phase can be effectively suppressed.

The invention discloses a polishing composition suitable for chemical mechanical polishing of a copper interconnection structure of an integrated circuit and application of the polishing composition. The chemical mechanical polishing composition comprises grinding particles, an oxidizing agent, a complexing agent, a corrosion inhibitor, a star-shaped polyethylene glycol polymer, a pH regulator, an optional nonionic polymer and deionized water. The star-shaped polyethylene glycol polymer in the polishing composition disclosed by the invention can act on the surface of a polished material, so that the polishing depression of a metal interconnection structure is reduced, and the in-chip heterogeneity of the polished surface is improved.

The invention discloses a preparation method for controlling magnet performance through a forming process, and belongs to the technical field of sintered neodymium-iron-boron permanent magnet materials. The method comprises the steps that S1, an upper pressing head assembly moves upwards to a preset powder adding position on a mold, and then sintered neodymium-iron-boron powder is quantitatively added into the mold; s2, the upper pressure head assembly moves downwards to a preset micro-descending position on the mold; s3, the lower pressing head assembly moves downwards and moves to a preset pre-pressing position on the grinding tool, and the sintered neodymium iron boron powder in the mold is pre-pressed; s4, after pre-pressing of the sintered neodymium iron boron powder is completed, magnetizing orientation operation is conducted on the sintered neodymium iron boron powder in the mold; s5, after the magnetizing orientation operation is completed, the upper pressing head assembly and the lower pressing head assembly synchronously move towards the middle of the mold, and the sintered neodymium-iron-boron powder is subjected to bidirectional opposite pressing; and S6, after the sintered neodymium-iron-boron powder is pressed, demagnetization operation is carried out. The technical scheme is used for solving the problem that powder distribution in a die cavity is not uniform when neodymium iron boron powder is pressed and sintered.

This invention discloses an acid cleaning fixture for a 166MHz quarter-wavelength superconducting cavity. The acid cleaning fixture comprises a large-tube side fixture, a small-tube side combined fixture, and an acid flow guiding fixture. The large-tube side fixture serves as the acid inlet or outlet of the superconducting cavity system. One end of the fixture is sealed to the large-tube flange of the superconducting cavity system, and the other end is connected to the acid cleaning equipment via a first connecting flange and a connecting pipe. The small-tube side combined fixture also serves as the acid inlet or outlet of the superconducting cavity system. One end of the fixture is sealed to the small-tube flange, the coupler flange, and the flanges of each rinsing port of the superconducting cavity system. The other end is connected to the acid cleaning equipment via a second connecting flange and a pipeline. The acid flow guiding fixture is located inside the superconducting cavity system and communicates with the large-tube side fixture. It guides the flow of acid entering the superconducting cavity system through the large-tube side fixture and balances the acid flow rate. This invention significantly improves the acid cleaning effect of the superconducting cavity and ensures smooth bubble removal.

The invention provides an air supply device (hair dryer) capable of improving non-uniformity of the quantity of ions blown out from each blow-out opening. A hair dryer (1) is provided with: an ion generation unit (24) which is disposed in an internal space (22) of a second body (20) and includes a first electrode (24A) located on one side (S1) of the internal space (22) and a second electrode (24B) located on the other side (S2) of the internal space (22); and a first air guide member (31) that guides a portion of the gas that has passed through the first electrode (24A) toward the second blow-out opening (21B).

The present invention belongs to the field of steel anti-corrosion surface engineering, and specifically relates to a relatively thin continuous hot-dip aluminum-silicon sacrificial anode alloy coating with an iron content of 3-5wt.% and a preparation method thereof. The process steps of the present invention are as follows: pre-treating the surface of the steel; preparing an Al-10Si-Zn alloy solution with an iron content of 3-5wt.%; performing continuous hot-dip plating; performing variable temperature annealing and quenching heat treatment on the steel after continuous hot-dip plating, so that the "long tongue or peak-shaped" η-Fe2Al5, "needle-shaped or fragmented" θ-FeAl3, "needle-shaped" β-Al9Fe2Si2 phase, θ-Al 13 Intermetallic compounds such as Fe4 and Al3FeSi are transformed into the Chinese character-shaped α-Al8Fe2Si phase and a small amount of needle-shaped β-Al9Fe2Si2 phase through peritectic reaction; at the same time, the coating has good bonding with the substrate, the coating is denser, and the ductility is improved, ultimately solving the above-mentioned production problems.

The present application provides a vertical roller mill in which unevenness in flow velocity of inward airflow in a classification rotor of a separator is improved. The vertical roller mill has a rotating table, a pulverizing roller disposed on an upper surface of the rotating table, a separator that classifies pulverized material conveyed by flow of gas, and a mill housing having an exhaust port disposed above the separator. The separator includes a classification rotor and guide vanes disposed around the classification rotor. The guide vanes have a plurality of layers of guide vane rows in the up-down direction. The plurality of layers of guide vane rows include a first layer of guide vane rows having first layer guide vanes arranged in a ring shape around the classification rotor with a rotor shaft as a center, and a second layer of guide vane rows having second layer guide vanes arranged in a ring shape around the classification rotor with the rotor shaft as a center, the passage cross-sectional area of gas in the first layer of guide vane rows being smaller than the passage cross-sectional area of gas in the second layer of guide vane rows.

The utility model discloses a reinforced concrete pipe seam smashing tool, and relates to the technical field of concrete pipes. The reinforced concrete pipe seam smashing tool comprises two pipe bodies, the two pipe bodies are symmetrically arranged, a horn pipe is fixed to one end of each pipe body, one end of each pipe body corresponds to the horn pipe, the end, away from the horn pipe, of each pipe body is sleeved with a first sealing ring, and a sealing mechanism is arranged between the two pipe bodies. Through the sealing mechanism, the fixing pipe drives the second sealing ring to move, the second sealing ring enters the sealing groove, when the second sealing ring enters the sealing groove, the limiting groove limits the second sealing ring, movement of the second sealing ring is reduced, the fixing pipe abuts against the horn mouth, displacement during pipe body connection is reduced, and the influence on the sealing effect between pipe bodies is reduced; straight arrangement of the pipe bodies is facilitated, and the situation of water seepage at the joints of the pipe bodies is reduced.

The utility model provides an air flow stabilizing device for glass fiber production, which comprises a base, an air outlet channel is arranged in the base, a plurality of air outlets communicated with the air outlet channel are arranged at the bottom of the base, and an air inlet pipe communicated with the air outlet channel is arranged on the side surface of the base. The vertical air curtain device is simple in structure, the vertical air curtain is formed downwards through the air outlet, air flow in a forming area is controlled, uneven tow thickness and broken ends caused by table position air flow disorder can be effectively improved, and the glass fiber drawing forming rate and quality are improved.

The utility model discloses a battery cell liquid cooling restraining tray, the battery cell liquid cooling restraining tray comprises a battery cell tray and a plurality of liquid cooling assemblies, the battery cell tray is used for bearing a plurality of battery cells; each liquid cooling assembly comprises a capsule piece and a water cooling plate, the water cooling plate is concaved inwards to form a groove, the periphery of the capsule piece is connected to the periphery of the groove of the water cooling plate in a sealing manner so as to define a deformable closed cavity, and the water cooling plate is arranged on the battery cell tray; the water cooling plate is provided with a liquid inlet connector and a liquid outlet connector, the liquid inlet connector and the liquid outlet connector are respectively communicated with the closed cavity, and temperature control liquid can be introduced into the liquid inlet connector, so that the capsule piece expands to extrude the battery cell and perform heat exchange. According to the technical scheme, the heat dissipation efficiency of the battery cell can be improved, the temperature uniformity of the battery cell is ensured, and energy consumption is reduced.

The embodiment of the utility model relates to a thinking machine which comprises a front shell, a rear shell, a middle plate, a question card, a mainboard and a negative pressure assembly. The front shell and the rear shell are connected and define a containing cavity, and the middle plate, the main plate and the negative pressure assembly are all located in the containing cavity. And a mounting gap is arranged on the front shell at a position corresponding to the middle plate. And the question card is positioned in the mounting notch and is inserted and matched with the front shell. The middle plate is provided with the adsorption hole channel penetrating through and communicating with the negative pressure assembly, so that power can be supplied to the negative pressure assembly through the main plate, the negative pressure assembly can exhaust air from the adsorption hole channel to form negative pressure in the adsorption hole channel, and then the question card is reliably attached and adsorbed to the middle plate under the action of the negative pressure. According to the thinking machine, the question card is inserted and matched with the front shell to be fixed, and the question card can be adsorbed and attached to the middle plate through negative pressure provided by the negative pressure assembly, so that the problem of unevenness caused by deformation and upwarp of the question card can be solved, the fixing effect of the question card can be further improved, and normal use of the thinking machine can be ensured.

The utility model discloses a photocuring 3D printer and an imaging device thereof, and the imaging device comprises a mounting bracket, and a light source device, a Fresnel lens, a display screen and a lens group which are sequentially arranged on the mounting bracket from top to bottom, the Fresnel lens is located between the light source device and the display screen and used for collecting light rays emitted by the light source device, and the collected light rays penetrate through a light-transmitting area of the display screen and are imaged through the lens set. According to the technical scheme of the utility model, the problem that a liquid crystal display screen is easy to damage in the prior art can be solved, and the problems of high cost of a lens group and large size of an imaging device in the scheme of adopting the lens group are further solved; and the problems of optical distortion and scattering caused by the fact that the Fresnel lens is directly located in the imaging path of the display screen and the lens group in the related design can be effectively avoided, so that the imaging quality is optimized, and the curing precision and quality in the printing process are improved.

The invention discloses a preparation method and application of a ternary positive electrode material. The preparation method of the ternary positive electrode material provided by the invention comprises the following steps: activating nano metal ion sol; and adding a silane coupling agent, a solvent and a ternary positive electrode active material into the obtained activation solution, and carrying out hydroxyl condensation reaction and calcination to obtain the positive electrode material coated with the nano-composite formed by the metal oxide and the silicon oxide. Through double coating, the problem of poor stability of the ternary positive electrode material in the prior art can be solved under the condition that the electrical property of the material is not influenced, and residual lithium on the surface of the positive electrode material is effectively removed, so that a lithium ion battery prepared from the positive electrode material has good stability and high-temperature cyclicity.

The invention relates to a water-based adhesive with a matte matte effect and a preparation method of the water-based adhesive, and belongs to the technical field of water-based adhesives. 2-aminoterephthalic acid and ferric trichloride hexahydrate are creatively used as an organic ligand and an iron source respectively to construct a metal organic framework containing an amino group, then hollow silicon dioxide is synthesized based on a # imgabs0 # method, surface modification of an amino coupling agent is performed on the hollow silicon dioxide, and the hollow silicon dioxide containing the amino group is prepared. Then, a compound which is obtained by carrying out hydrosilylation on tetramethyldisiloxane and 3, 4-epoxy-1-butene and is provided with an epoxy group as a terminal group and a methyl group as a side group is used as a cross-linking agent, ring-opening bonding of the epoxy group and an amino group is carried out, cross-linking compounding of the metal organic framework and the hollow silicon dioxide is achieved, and therefore the modified delustering agent is obtained. The waterborne adhesive is prepared by physically blending the waterborne polyurethane dispersion and the defoaming agent, and the matte matte surface effect is achieved.

The invention discloses a method for reinforcing an existing lining structure, which comprises the following steps of: determining a deformation position of a lining in a tunnel, and selecting at least one coverage area along the inner wall of the lining at the deformation position; a reinforcing layer formed by pouring reinforcing material slurry is arranged in the covering area, the reinforcing layer with the UHPC reinforcing material slurry can effectively control continuous deformation of the duct piece, the reinforcing layer has a certain thickness, the section height of a pressed area on the inner side of the duct piece can be effectively increased, deformation of a pressed part on the inner side is controlled, then deformation of a pulled part on the inner side is indirectly controlled, and the service life of the duct piece is prolonged. Therefore, the overall rigidity and bearing capacity of the lining are improved.

This utility model relates to the field of battery manufacturing technology, and in particular to a winding needle and winding device for lithium-ion batteries. The device includes a fixed platform, a support shaft, and a needle body. The needle body comprises a first section and a second section. The first section is connected to the support shaft. A plurality of first protrusions are formed at equal intervals along the axial direction on the outer wall of the first section. A plurality of second protrusions are formed at equal intervals along the axial direction on the outer wall of the second section. The distance between two adjacent first protrusions is smaller than the distance between two adjacent second protrusions, and the major axis radius of the first protrusion is smaller than the major axis radius of the second protrusion. The winding needle of this utility model can reduce the spiral phenomenon during winding of cylindrical lithium-ion batteries, improve the consistency of positive and negative electrode coating, and improve the unevenness of the upper and lower end faces caused by spiraling during winding of cylindrical lithium-ion batteries, significantly improving the production yield and appearance of cylindrical lithium-ion batteries.

The invention discloses a production method of a nickel-chromium-iron-based alloy plate. The nickel-chromium-iron-based alloy plate comprises the following components: 0.05-0.08% of C; 0.25 to 0.45 percent of Si; mn: 0.55 to 0.80%; less than or equal to 0.025% of P; s < = 0.005%; cr: 24.5 to 26.0%; ni: 36.0 to 37.5%; 0.30% or less of Cu; 0.55 to 0.65 percent of Nb; 0.10-1.0% of Mo, and less than or equal to 2.5% of residual element W; less than or equal to 0.010% of B; 0.10% or less of Al; 0.10% or less of Ti; 0.15% to 0.60% of [N]; and the balance of Fe and inevitable impurities. The rolling technology comprises the steps of electric arc furnace smelting, AOD refining, LF refining, die casting, surface cleaning, heating, first-heating-number rolling, dead head cutting, surface cleaning, second-heating-number rolling, third-heating-number rolling, forming rolling, water cooling, surface cleaning, solid solution heat treatment and acid pickling. According to the nickel-chromium-iron-based alloy plate and the preparation method thereof, on the basis of optimizing components, reasonable smelting, rolling and heat treatment processes and a short-process nickel-chromium-iron-based alloy plate production process are adopted, so that the production cost is reduced, and better product performance can be obtained.

The application relates to the technical field of semiconductors, and particularly relates to a high-brightness red LED chip for display and a manufacturing method thereof. The high-brightness red LED chip for display comprises, from bottom to top, an AlN substrate, an Au bonding layer, an In bonding layer, a barrier layer, a silver mirror layer, a transparent conductive layer, a silicon dioxide pattern layer, a magnesium fluoride pattern layer, a P-type window layer, a P-type transition layer, a P-type confinement layer, an MQW light-emitting layer, an N-type confinement layer, an N-type current expansion layer, an N-type electrode protection layer and an N-type ohmic contact layer; the chip sidewall has a step cutting path etched from the chip upper surface to the P-type window layer, the step cutting path is locally widened on the opposite side of the N electrode to form a step surface, the step surface is used for arranging the P electrode, and the P electrode expansion pad is embedded in the transparent conductive layer; the above LED chip structure provided by the application has good current expansion uniformity, luminous brightness, heat dissipation and reliability.

The present application belongs to the technical field of forging of high-temperature alloy conical disc forgings, and particularly relates to a process method for preforming of a large high-temperature alloy conical disc die blank. The present application realizes uniform deformation by means of the "die blank", distributes deformation of each part by means of "die preforming", removes the deformation dead zone through local cold die layer processing in the subsequent process, realizes die forging deformation distribution, realizes uniformity of the structure by means of "die forging", and uses small equipment to do big things, and completes the hot working process of the structure and the performance under the controllable deformation condition.

The invention discloses a preparation method and application of graded lignin high-stability anion dispersed rosin size, and the preparation method comprises the following steps: step 1, weighing a lignin raw material, mixing with an ethanol solution, and continuously stirring at room temperature; performing vacuum filtration to obtain a lignin solution dissolved in ethanol; carrying out rotary evaporation on the solution to recover ethanol, drying the residual solid, and grinding to obtain the low-molecular-weight lignin L95; and 2, fully mixing low-molecular-weight lignin L95 and rosin in absolute ethyl alcohol, magnetically stirring the solution, carrying out rotary evaporation to recover absolute ethyl alcohol, and drying residues in a drying oven to obtain the graded lignin high-stability anion dispersed rosin size. The lignin anion dispersed rosin size with high stability and high sizing performance is prepared, rosin in the sizing agent ensures good hydrophobicity of the sizing agent, the preparation process is efficient, reaction conditions are mild and controllable, and the lignin anion dispersed rosin size has wide application prospects.

The utility model provides a kind of temperature control mould of multi-sensing perception, for glass hot bending forming device, temperature control mould includes: mould body, sub-mould, first heating part, second heating part and temperature sensing part, mould body is cuboid, the outer edge of sub-mould is circular arc, sub-mould is detachably installed on mould body, first heating part is installed on mould body and carries out heating to glass piece, second heating part and temperature sensing part are installed on sub-mould, temperature sensing part detects the temperature of glass piece located on sub-mould, second heating part adjusts and local heat preservation according to the data of temperature sensing part, the local temperature of glass piece located on sub-mould;The utility model is detachably installed different appearance sub-mould on mould body, satisfy the hot bending forming of different shape glass piece, improve the non-uniformity of heating using first heating part alone, realize high-precision heating, improve forming quality, improve finished product yield.

The present invention relates to the technical field of clothing, and in particular to a body shape improving clothing, which comprises a clothing body made of clothing fabric layers, wherein the inner layer of the clothing body is interwoven with an elastic fabric layer, and the inner layer of the elastic fabric layer is interwoven with a thermal insulation fabric layer, and a correction device is arranged on the outer side of the back of the clothing body, and a massage device is arranged between the correction device and the clothing body. The body shape improving clothing of the present invention has good elasticity, warmth retention, wear resistance, and comfort, and is suitable for middle-aged and elderly people to wear; the correction device can effectively improve the problem of hunchback in middle-aged and elderly people, and the massage device can effectively eliminate lactic acid generated in the back due to long-term walking or working, relieve fatigue and repair body functions, thereby reducing the onset of back diseases.