21results about How to "Improve shape quality" patented technology

The utility model discloses a hot-pressing shape correcting mold for a liquid cooling casting of a new energy charging pile. The hot-pressing shape correcting mold comprises a lower mold mounting plate, a lower heat insulation plate, a lower mold plate, a lower heating pipe, a lower mold shape correcting block, an upper mold mounting plate, an upper heat insulation plate, an upper mold plate, an upper heating pipe and an upper mold shape correcting plate, the lower heat insulation plate is installed on the upper side of the lower die installation plate, the lower die plate is installed on the upper side of the lower heat insulation plate, the lower heating pipe is installed in the lower die plate, and the lower die shape correcting block is installed on the upper side of the lower die plate. The upper heat insulation plate is installed on the lower side of the upper die installation plate, the upper die plate is installed on the lower side of the upper heat insulation plate, the upper heating pipe is installed in the upper die plate, and the upper die shape correction plate is installed on the lower side of the upper die plate. The upper die shape correcting plate and the lower die shape correcting block are vertically opposite and matched with each other and used for conducting hot-pressing shape correcting on the new energy charging pile liquid cooling casting. According to the utility model, hot-pressing shape correction can be carried out on the liquid cooling casting, the stress release of the casting can be improved, the shape correction quality is improved, the flatness of the product after shape correction is consistent and stable, and rebounding is avoided after shape correction.

The invention discloses a mechanical screw-down synchronizing device of a hot continuous rolling roughing mill, which comprises a transmission side screw-down speed reducer, an operation side screw-down speed reducer, a transmission motor, a synchronizing shaft, a WGT10 coupling, a brake and a connecting bolt, and is characterized in that the synchronizing shaft is directly connected with the transmission side screw-down speed reducer and the operation side screw-down speed reducer; and the two sets of WGT10 couplings are respectively connected between the synchronizing shaft and the transmission side screw-down speed reducer and between the synchronizing shaft and the operation side screw-down speed reducer. The device improves positioning precision, avoids defects of rolled pieces, reduces failure rate and maintenance cost, improves yield and product quality, is already applied to 1450mm and 2050mm units, and effectively solves many problems of electromagnetic clutches.

The invention belongs to the technical field of metal material processing, and discloses a cold rolling method for overcoming brittle fracture of non-oriented silicon steel for a new energy automobile, which comprises the following steps: S1, normalizing treatment: heating at 920-1000 DEG C for 2.5-4 minutes; s2, pickling treatment: pickling in an acidic aqueous solution, then soaking in a clean water tank, neutralizing with an alkaline aqueous solution, blow-drying and coating oil to prevent rusting; s3, heating treatment is conducted, specifically, the workpiece is placed in a box-type resistance furnace, and heat preservation is conducted for 20-120 min under the condition of 200-500 DEG C; s4, cold rolling is conducted, specifically, hot rolling is rapidly conducted on a cold-rolling mill; and S5, continuous annealing is conducted, specifically, continuous annealing is conducted at the strip steel speed of 85 m / min to 95 m / min, and the annealing soaking temperature is 920 DEG C to 1000 DEG C. The technical problem that when silicon steel cold rolling is carried out in a laboratory environment, the edge of a cold-rolled plate is cracked or brittle fracture occurs is solved.

The invention discloses a preparation method of a high-precision ultra-wide 50 steel cold-rolled steel strip, and belongs to the technical field of ferrous metallurgy. In the production process of the steel strip, the surface quality of the pickled steel strip is improved by optimizing the pickling process; the total reduction rate of cold rolling is adjusted, the problem of steel strip rolling edge cracking is eliminated, and a product is rolled to the target thickness; a process lubricating system of the rolling mill is optimized, so that the surface quality and the plate shape quality of a product are improved; and the annealing process parameters are optimized, so that the physical properties of the product are ensured. The high-precision ultra-wide 50 steel cold-rolled steel strip is successfully developed by adopting the measures of optimizing chemical components and physical properties of a cold-rolled base material, optimizing an acid pickling process, adjusting the total reduction rate of cold rolling, optimizing a rolling mill process lubricating system and annealing process parameters and the like; the problems that in the using process of a traditional steel belt, the thickness fluctuation is large, the plate shape quality is poor, and the surface quality is poor are solved.

According to the technical scheme, the processing equipment is characterized by comprising a dyeing device, a heat setting device, an after-finishing device and a control mechanism. The heat setting device comprises a box body, a feeding channel and a conveying mechanism are arranged in the box body, and a steam setting mechanism is arranged in the middle of the feeding channel. The steam shaping mechanism comprises extrusion pieces symmetrically arranged in the feeding channel, each extrusion piece is composed of pressing plates arranged on the two sides of the fabric up and down, each pressing plate is provided with an air cavity and a spraying hole, the air cavities are connected with a steam source, and the spraying holes face the fabric and can spray high-temperature steam. In addition, the equipment further comprises a driving mechanism which can drive the two sets of extrusion pieces to horizontally move in the width direction of the fabric, and the moving directions of the two sets of extrusion pieces are opposite. According to the equipment, uniform high-temperature steam spraying and fabric pressurizing and smoothing are achieved, the problems of uneven heating and wrinkling caused by the fact that the steam spraying direction is fixed in traditional equipment are effectively solved, and the flatness, the size stability and the finished product quality of the fabric are remarkably improved.

The invention discloses a spindle-shaped foot roller capable of improving the quality of a plate blank, a foot roller system and a continuous casting method. The spindle-shaped foot roller comprises a foot roller center part, a foot roller edge part and a foot roller transition part. The roller surface diameter of the central part of the foot roller is 105 mm, and the roller surface diameter of the edge part of the foot roller is 100 mm; and the foot roller transition part between the foot roller center part and the foot roller edge part adopts a curve smooth transition design. Through geometric parameter optimization and transition design of the spindle-shaped foot roller, the supporting effect of the narrow-face blank shell can be improved, meanwhile, mechanical pressure can be evenly distributed, the blank type and the surface quality of a casting blank are effectively improved, and meanwhile defects and production risks are reduced.

The invention discloses a five-axis ball-end milling free-form surface overall texture morphology evaluation method, which comprises the following five steps: S1, designing an orthogonal experiment by taking a cutter attitude angle as a factor, establishing five-axis ball-end milling free-form surface texture morphology digital models H (i, j), projecting a height value matrix corresponding to each group of digital models to an XWOWYW surface, and establishing a five-axis ball-end milling free-form surface texture morphology model H (i, j); obtaining a Z value residual height matrix Hc (i, j); s2, extracting overall texture morphology feature indexes of the digital model of the curved surface texture morphology, and establishing a preliminary classification method of the curved surface texture morphology; s3, establishing a curved surface texture morphology subdivision method based on the Z value residual height matrix Hc (i, j), and obtaining a curved surface texture morphology subdivision result; and S4, establishing a method for determining the range of the tool attitude angle corresponding to each type of the curved surface texture morphology. According to the method, reference can be provided for limiting adjustment of the cutter attitude angle in the machining process, and the problem that the texture morphology is poor due to improper cutter attitude adjustment is solved.

The method for analyzing the influence of roll bending of a SmartCrown rolling mill on strip shape based on digital twinning analysis of the application comprises the following steps: Step 1: collecting strip parameters, rolling process parameters and SmartCrown rolling mill parameters; Step 2: establishing a three-dimensional elastic-plastic finite element model of the SmartCrown rolling mill and the strip according to the parameters collected in Step 1; Step 3: performing simulation experiments on the strip rolling process by using the three-dimensional elastic-plastic finite element model; Step 4: extracting the transverse thickness distribution data of the rolled strip in the stable rolling stage of each simulation experiment in Step 3, calculating the strip crown, edge thinning and strip crown weight according to the transverse thickness distribution data, and then establishing a digital twin; and Step 5: analyzing the influence of the work roll bending force and the intermediate roll bending force on the plate shape of the rolled strip according to the digital twin obtained in Step 4.

The application discloses a kind of multi-modal adaptive furnace temperature control method, system and continuous annealing furnace based on space-time thermal field decoupling, multiple independent heating zones are provided in the continuous annealing furnace, multiple groups of staggered arrangement burners are arranged in each heating zone, four-stage adaptive control strategy based on temperature ratio segmentation and thermal field space-time distribution collaborative control, including: fast response heating zone, proportional regulation transition zone, pulse cross uniform zone, dynamic thermal field maintenance zone. By decoupling furnace temperature control and thermal field spatial distribution, using the way of spatial grouping pulse activation + time staggered control, the rapid response, accurate regulation and uniform maintenance of furnace temperature are realized.The application effectively solves the technical problems of temperature overshoot, response lag, thermal field unevenness, high energy consumption and other technical problems in the traditional control mode, significantly improves the quality of strip steel heat treatment and energy utilization efficiency.

The invention relates to an energy-saving boiler superheater and a small-radius U-shaped T91 alloy pipe bending process thereof in the technical field of energy-saving boilers. The energy-saving boiler superheater comprises the steps that S1, annealing treatment is conducted before bending; s2, first cold roll forming treatment; s3, heating extrusion temperature control; s4, extruding, finishing and forming; and S5, normalizing and tempering heat treatment. In the T91 alloy pipe bending process, the relative bending radius R1 of the T91 alloy pipe is set to be 1.5 times smaller than the outer diameter of the pipe in the first cold bending process, then the bending radius R2 is 0.6-1.1 times of the outer diameter of the pipe through the extrusion finishing forming process, and the bent elbow part is uniform in deformation and smooth in transition through progressive deformation control; and the problems of goose egg-shaped deformation and the like are solved.

The application relates to the field of semiconductor devices and provides a preparation method of a long-wavelength VCSEL, which comprises the following steps: sequentially laminating and growing an N-InP buffer layer, a bottom DBR structure and an N-InP space layer on an N-InP substrate to form a first epitaxial wafer; taking out the first epitaxial wafer, taking photoresist as a mask, injecting H ions into the N-InP space layer by using an ion implantation technology, further passivating part of the N-InP space layer to form a passivation area, and forming a light-emitting area by the unpassivated N-InP space layer; removing the mask to obtain a second epitaxial wafer; annealing the second epitaxial wafer and cleaning the surface; sequentially laminating and growing a P-InAlAs space layer, a quantum well area, an N-InAlAs space layer and a top DBR structure on the N-InP space layer of the second epitaxial wafer to form a third epitaxial wafer; and preparing the third epitaxial wafer by using a conventional optoelectronic device preparation method to obtain a long-wavelength VCSEL device. The process is simple.

The present application belongs to the technical field of electric arc additive manufacturing, and discloses an online self-adaptive regulation method for the appearance of electric arc additive manufacturing. According to the deviation between the actual formed part appearance and the theoretical appearance of the part, the forming trajectory and forming parameters of the unformed part are dynamically adjusted. In this way, a layer closed-loop control mechanism is formed, which can reduce the forming deviation and improve the flatness of the deposited layer surface. The method can be widely applied in the field of electric arc additive manufacturing, effectively solving the problem of poor cumulative forming precision of electric arc additive manufacturing, improving the forming quality and surface flatness during additive manufacturing, ensuring the stability of the process, and realizing a more accurate and reliable manufacturing process.

The utility model provides an extruding machine for aluminum profile processing, which relates to the technical field of aluminum profile processing and comprises a frame, an extruding plate is movably arranged on the top wall of the frame, a die is arranged on the bottom wall of the frame, a groove is arranged in the die, and a positioning piece is arranged on the outer edge of the groove. The positioning piece comprises a vertical rod and a circular piece which is elastically and movably arranged, the upper end of the vertical rod penetrates through the aluminum profile plate, and the circular piece is arranged on the periphery of the vertical rod in a sleeving mode and used for supporting the aluminum profile plate. The vertical rod in the positioning piece penetrates through the aluminum profile plate, the aluminum profile plate can be positioned, when the electric telescopic rod is started to enable the extrusion plate to move downwards to extrude the aluminum profile plate above the mold, the aluminum profile plate can be tightly attached to a groove in the mold and cannot deviate, the shaping accuracy of the aluminum profile plate can be greatly improved, and the production efficiency of the aluminum profile plate is improved. Meanwhile, after the aluminum profile plate is shaped and the extrusion plate is separated from the mold, the aluminum profile plate moves upwards and is separated from the mold, and rapid and automatic demolding of the aluminum profile plate can be achieved.

This application relates to an 1180MPa grade ultra-high strength steel and its preparation method, belonging to the field of steel manufacturing technology. The chemical composition of the ultra-high strength steel, by mass fraction, is: C: 0.04%~0.25%, Si: 0.60%~1.80%, Mn: 1.20%~3.00%, Al: 0.02%~0.10%, P≤0.005%, S≤0.002%, Ti: 0.010%~0.040%, Cr: 0.10%~0.80%, N≤0.004%, B: 0.0010%~0.0030%, with the remainder being Fe and unavoidable impurities. The microstructure of the ultra-high strength steel includes ferrite and martensite. A breakthrough in the performance of ultra-high strength steel is achieved by employing a C-Si-Mn-Cr-B composition system and a segmented cooling process. After finishing rolling, the slab is air-cooled under a temperature-controlled insulation hood, allowing it to enter the water-cooling stage within the phase transformation temperature range and complete the martensitic phase transformation at an ultra-high cooling rate. The resulting ultra-high-strength steel possesses both ultra-high strength and good ductility, while its elongation, cold bending performance, and sheet shape quality are all comprehensively improved. This method effectively overcomes the sheet shape defects, performance fluctuations, and weld softening problems of traditional methods, and is suitable for the industrial production of ultra-thin ultra-high-strength steel.

The invention relates to a semiconductor structure and a preparation method thereof, and relates to the technical field of integrated circuit design and manufacturing. The supporting layer is in direct contact with the side walls of the plurality of lower electrodes, and the supporting layer comprises a wavy side wall; the plurality of openings are located between the adjacent lower electrodes, the openings are arranged at intervals in the first direction and the second direction to form an array, and the openings have a first size; from a top view, the wavy side wall comprises a plurality of wave crests and wave troughs, a second size is formed between every two adjacent wave crests, the second size is larger than the first size, and at least the morphology quality of the array area edge unit pattern can be improved.

The invention discloses a luggage metal framework shaping mechanism for luggage production, and belongs to the technical field of luggage production shaping, supporting legs are arranged at the bottom of a shaping workbench, a supporting frame and a lifting rod are arranged on the surface of the shaping workbench, a heating box is arranged at the top of the supporting frame, and a shaping box is fixedly mounted at the bottom of the supporting frame; the molding mechanism comprises a molding box, a heating box is arranged in the molding box, a side opening is formed in the side face of the molding box, a connecting block is slidably connected to the inner wall of the side opening, a scraping plate is arranged on one side of the connecting block, and a telescopic arm is fixedly installed on the other side of the connecting block. And through the arrangement of a lifting plate and a lifting rod, the molding framework in the molding box can be conveniently taken out, the interior of the molding box can be conveniently cleaned, and the use convenience is greatly improved.

The invention relates to an HC series rolling mill intermediate roll reverse adjustment method, which comprises the following steps: 1) before dynamic specification change, according to the strip steel specification span before and after specification change, reducing the roll bending value of an intermediate roll and increasing the roll bending value of a working roll; (2) during dynamic specification changing, welding seams of strip steel of two specifications enter a roll gap, and a middle roll is subjected to UC-amp; automatic axial positioning is carried out according to the value, the middle roller has no convexity highest point, no obvious wave shape is generated in the whole axial positioning process of the middle roller, and only slight wave shapes caused by rolling force fluctuation after welding are generated; 3) finishing dynamic specification changing, and performing UC-amp; the value is reset, axial positioning of the middle roller is completed, the wave shape condition stably fluctuates within the range of 0-3I, and at the moment, the middle roller bending value and the working roller bending value are restored to preset values. The method has the advantages that double-side waves of the strip head during dynamic specification changing are effectively avoided, the strip shape quality is guaranteed, and the relative length difference is effectively reduced.

A filter forming method, comprising: after forming a first mask layer covering initial electrode fingers in an edge region, removing a partial thickness of the initial interdigital electrode on the side of the first mask layer, forming a bus bar of a bus region, and electrode fingers of a center region and the edge region, and forming a piston structure on the top of the electrode fingers at the intersection of the first mask layer and the electrode fingers in the edge region; since the first mask layer covers the initial electrode fingers in the edge region, and the projection of the first mask layer on the substrate intersects with the projection of the initial electrode fingers on the substrate, that is, the edge of the first mask layer is self-aligned with the sidewall of the initial electrode fingers in the edge region, therefore, the sidewall of the piston structure is aligned with the sidewall of the electrode fingers, which is beneficial to improve the morphology quality of the interdigital electrode, and the alignment accuracy of the electrode fingers and the piston structure, thereby improving the function of the filter in suppressing spurs.

The invention discloses a processing method of a tellurium-zinc-cadmium wafer with high surface shape quality, which is characterized in that adverse factors in the processing process of the tellurium-zinc-cadmium wafer are neutralized by adjusting process steps, so that the purpose of preparing the tellurium-zinc-cadmium wafer with high surface shape quality is achieved. That is, the edge collapse phenomenon of the wafer in the chemical polishing process is neutralized by using the deformation of the wafer caused by the stress of the damaged layer generated in the polishing process of the tellurium-zinc-cadmium wafer. According to the method, firstly, a wafer needs to be subjected to chemical corrosion to remove damage layer stress on the two faces of the wafer, secondly, a diamond grinding wheel is used for grinding the growth face of the wafer, after grinding, the wafer is fixed again and then polished, and finally chemical polishing is conducted. The method has the advantages of being simple in process, good in repeatability, high in realizability and the like, and the surface shape control level in the tellurium-zinc-cadmium wafer production process can be effectively improved.

The present invention provides a process method for controlling the shape of an annealed thin steel strip, comprising: performing a straightening process on the thin steel strip before the tail rolling pass, so that the internal stress of the thin steel strip tends to be uniform; performing a gradient annealing process on the thin steel strip that has completed the straightening process to eliminate the uniformly distributed internal stress inside the thin steel strip; performing tail rolling on the thin steel strip after the gradient annealing process; performing a second straightening process on the thin steel strip after the tail rolling process to obtain a finished steel strip. The process method for controlling the shape of an annealed thin steel strip provided by the present invention performs a straightening process on the thin steel strip before the tail rolling pass, so that the uneven internal stress in the thin steel strip is uniformed, and then performs a gradient annealing process on the thin steel strip whose internal stress tends to be uniform, thereby forming an annealing time difference for different positions of the thin steel strip, which can improve the flatness while eliminating the internal stress of the thin steel strip, and has a significant effect on the edge wave control of the thin steel strip.

The utility model discloses a folding and shearing device for a machine cover. The folding and shearing device comprises an upper die base, a material pressing plate, a folding and shearing knife block, a lug cutting knife block and a lower die base. The upper die base is locked and attached to an upper sliding block of the oil press, so that the upper die base is arranged above the lower die base in a lifting manner; a machine cover plate material is arranged on the lower die base, and the material pressing plate is installed on the upper die base and can be pressed on the machine cover plate material. The lug cutting knife block is arranged on the lower die base, the knife edge of the lug cutting knife block is in a sharp shape and located below the edge cutting position of a machine cover plate, the shearing and folding knife block is arranged on the upper die base, the knife edge of the shearing and folding knife block is in an arc shape and located above the edge folding position of the machine cover plate, and the shearing and folding knife block is located between the lug cutting knife block and the lower die base. The utility model relates to the technical field of plate machining equipment, and can solve the problem that in the prior art, the edge folding procedure and the edge shearing procedure of a plate need to be carried out separately.