311results about How to "High dimensional accuracy" patented technology

The utility model discloses a stainless steel pot trimming equipment, including machine table, rotation device, hold-down gear and cutting device, rotation device includes first frame, driving spindle, driven spindle and first drive mechanism, first frame is fixed connection on machine table, driving spindle is horizontally arranged and rotatablely connected on first frame, driven spindle is fixed on first drive mechanism. One end of the driving rotating shaft is fixedly connected with a first flange plate, the first driving mechanism is connected with the other end of the driving rotating shaft and can drive the driving rotating shaft to rotate, and the driven rotating shafts are used for sleeving stainless steel kettles and have different specifications; the first flange plate and the second flange plate are detachably and fixedly connected through bolts; the pressing device is used for pressing the stainless steel kettle onto the driven rotating shaft; the cutting device is used for cutting stainless steel kettles. The embodiment of the utility model can quickly adapt to the machining requirements of workpieces with different sizes.

The invention relates to a welding center and method for platform machining, and belongs to the technical field of welding equipment. The device comprises a rack, a gantry frame is slidably mounted on the upper surface of the rack, an air cylinder is slidably arranged at the bottom of a cross beam of the gantry frame, a mounting plate is fixed to the telescopic end of the air cylinder, and a welding head is mounted on the lower surface of the mounting plate; and fixing cylinders are further included, the two fixing cylinders are fixed to the left side and the right side of the lower surface of the mounting plate, and moving plates are slidably connected to the opposite faces of the two supporting vertical plates. According to the device, a single honeycomb platform is automatically clamped through a motor and a wedge block, a guide plate is matched for abutting, an elastic floating roller is matched for pressing, positioning is stable, a workpiece is not damaged, full-area cleaning and negative-pressure synchronous impurity removal are adopted before welding, welding defects are effectively avoided, initial pre-stretching is conducted in the welding process, and the welding efficiency is improved. And then the progressive secondary stretching is realized along with the linkage of the welding machine head, the stress is dynamically eliminated, the deformation is inhibited, and the flatness and the welding precision are greatly improved.

The utility model relates to the technical field of door and window corner brace cutting, in particular to an aluminum door and window corner brace cutting saw. The aluminum door and window corner brace cutting saw comprises a box body, a driving assembly, a right-angle block, a second electric push rod, a length fixing assembly, a containing cavity and a power assembly, the left side of the box body is fixedly connected with a control panel, a cutting platform is arranged in the front side of the box body, a guide hole is formed in the box body, and the interior of the guide hole is movably connected with the cutting saw. A driving assembly is installed in the cutting saw, a right-angle block is installed on the surface of the cutting platform, rolling wheels are rotationally connected to the interior of the right-angle block in an array staggered mode, a second electric push rod is fixedly connected to the top end of the box body, a force application plate is fixedly connected to the driving end of the second electric push rod, and sliding rods are symmetrically and slidably connected to the inner walls of the two sides of the force application plate. According to the utility model, accurate length positioning of the corner connector is ensured, deformation of the corner connector caused by too strong rigid force is avoided, and the problem that the traditional clamping mode easily causes deformation of the corner connector and affects door and window quality is solved.

The application provides a circuit breaker, relates to the technical field of switches, and can reduce the production cost of the circuit breaker and is easy to assemble. The circuit breaker comprises a shell, an indicating piece, a movable contact, a driving shaft and an elastic piece, and the shell is provided with a viewing window. The indicating piece is provided with an acting end and an indicating end, and the indicating end is provided with an opening indication mark and a closing indication mark. When the indicating piece is in a first position, the opening indication mark corresponds to the viewing window. When the indicating piece is in a second position, the closing indication mark corresponds to the viewing window. When the movable contact is in a contact position, the indicating piece is in the second position. When the movable contact is in a disengagement position, the indicating piece is in the first position. The driving shaft drives the movable contact to switch between the contact position and the disengagement position. The driving part of the driving shaft is in abutment with the acting end, and the indicating piece is switched from the first position to the second position. The two ends of the elastic piece are elastically applied to the shell and the indicating piece respectively, and are used for applying an action force close to the driving part to the acting end.

The application discloses a paper box joint anti-dislocation shaping equipment and particularly relates to the paper box processing technical field, which comprises a protection structure, an unfolding and shaping structure arranged above the protection structure, a conveying mechanism arranged behind the protection structure, and a vacuum generating device arranged on the outer wall of the unfolding and shaping structure. The unfolding and shaping structure can be used for unfolding and shaping paper boxes of different sizes, forming a three-dimensional shape which is almost consistent with the actual unfolding state of the paper boxes and keeping stable, thereby providing a stable operation basis for the subsequent nailing or sticking process. The protection structure can be used for limiting and aligning the paper board during the paper board butt joint adjustment, adapting to the paper board processing requirements of different width specifications, effectively avoiding the side deviation and dislocation of the paper board during the joint process, guaranteeing the accuracy of the butt joint edge alignment of the paper board, and reducing the probability of the scissors difference after the box body is shaped.

This utility model provides a multi-angle adjustable metal drilling machine clamping device, belonging to the field of drilling machine technology. It includes a support assembly comprising a bracket, a support plate fixedly connected to the end of the bracket, a support seat fixedly connected to the end of the support plate, and a turntable rotatably mounted on the side wall of the support seat. The clamping assembly includes a base fixedly connected to the side wall of the turntable, a crossbeam slidably connected to the inner wall of the base, a positioning seat fixedly connected to the end of the crossbeam, a baffle hinged to the side wall of the positioning seat, and a positioning plate fixedly connected to the top of the positioning seat. The beneficial effects of this utility model are: through a precisely designed guiding structure, it can provide a stable and accurate guiding channel for the drill bit, reducing deviations during the drilling process, improving drilling accuracy, adapting to metal workpieces of different sizes and shapes, expanding the applicability of the clamping device, meeting various complex drilling processing needs, and improving the versatility and practicality of the clamping device.

The utility model belongs to the field of bar rolling technology relates to a kind of high-precision special steel bar reducing sizing production system, including two two-high rolling mill, two three-high rolling mill, water tank after reducing sizing and finished product collection system being sequentially arranged along the rolling direction.The utility model is innovatively configured with the combination of 2 two-high rolling mill of low cost and 2 high-precision three-high rolling mill, and an efficient reducing sizing production system is constructed.Compared with traditional three-high rolling mill system, this design significantly reduces the number of expensive three-high rolling mill, thereby reducing equipment purchase and maintenance costs.At the same time, two high rolling mill leads the primary rolling of large-scale bar, effectively reducing energy consumption and production cost.This configuration ensures product precision while significantly optimizing cost structure, especially suitable for production scenarios with high economic requirements.

This invention discloses a production control method for ultra-thin-walled steel pipes, including obtaining first specification parameters of a solid round billet and second specification parameters of the finished steel pipe; sawing the solid round billet according to the second specification parameters to form short round billets; feeding the short round billets into an annular furnace, and sequentially passing through a heat recovery section, a preheating section, a preheating section, a heating section (sections one to four), and a soaking section for heating; monitoring the temperature of the short round billets in real time to ensure that the center temperature of the short round billets reaches a first temperature threshold. The first adjustment refers to the initial adjustment of the burner temperature based on the analysis results of the first image, used to address anomalies in the surface temperature of the short round billets; the second adjustment refers to the secondary adjustment of the burner temperature based on the analysis results of the second image, used to address anomalies in both the surface and internal temperatures of the short round billets, which helps to eliminate local non-uniformity in the temperature field of the short round billets on the surface and inside.

This invention relates to the field of printing equipment technology, specifically to a method for printing 3D effect patterns based on multi-color overlay, comprising the following steps: S1, placing the workpiece to be printed on a base; S2, aligning the screen with the base, and printing ink onto the workpiece using a squeegee; S3, replacing the screen, and printing again using the squeegee, with multiple overlapping prints creating a 3D effect pattern on the workpiece surface; the screen mentioned in step S2 includes a frame and a mesh fabric. The frame includes two support rods and four telescopic rods. The two support rods are arranged in parallel, and the telescopic rods include a main rod and a secondary rod, with the main rod and secondary rod slidingly engaged; the four telescopic rods are interconnected to form a rectangular frame, with two telescopic rods respectively positioned on the two support rods, and a first magnetic block on each of the main rod and secondary rods. This invention solves the problem of printing quality being affected by screen deformation through the frame, mesh fabric, and adjustment mechanism.

The utility model relates to the technical field of pull ring production, in particular to ultrathin pull ring continuous production equipment with a tension control function. The equipment is mainly composed of a rack, a discharging winding roller, an adjusting roller, a horizontal roller, an upper stamping die, a lower stamping die, a tension adjusting block, a motor and the like, raw materials are placed on the discharging winding roller, the adjusting roller and the horizontal roller guide the materials to be conveyed, the upper stamping die and the lower stamping die are responsible for pull ring stamping forming, and the tension adjusting block regulates and controls the tension of the materials. The motor drives the waste roller and provides power for the conveying belt through belt transmission, and a spring and a sliding block in the tension adjusting block are matched with the tension adjusting switch to achieve accurate tension adjustment. The tension control device has the beneficial effects that the product quality can be stabilized, the defects of the pull ring caused by the tension problem are reduced through accurate tension control, the product percent of pass is improved, and meanwhile, the continuous production process of equipment is matched with an efficient waste treatment and finished product collection mode, so that the production efficiency is greatly improved, the production cost is reduced, and the market competitiveness of enterprises is enhanced.

This utility model provides a casting fixture for producing brake housings, relating to the field of casting technology. It includes a top plate, with support columns fixedly connected to the bottom and near the four corners of the top plate. A liquid storage tank is fixedly connected through and to the center of the top plate. An upper mold plate is fixedly connected to the bottom of the liquid storage tank. A solenoid valve is fixedly installed at the connection between the liquid storage tank and the upper mold plate. A connecting plate is fixedly connected between the two support columns near the bottom. A hydraulic cylinder is fixedly connected to the top of the connecting plate near the center. A lower mold plate is embedded in the bottom of the upper mold plate. Fixed plates are symmetrically fixedly connected to the surface of the lower mold plate. In this utility model, the casting fixture is equipped with an elastic buffer structure composed of vertical rods, limiting rods, a circular disc, and springs. Combined with power components such as hydraulic cylinders, it can quickly and smoothly push the brake housing out of the mold, significantly shortening the demolding time and improving production efficiency.

This utility model discloses a screw nut internal thread grinding machine, comprising: a bed, a fixed worktable on the front side of the bed, a headstock fixedly mounted on the left side of the worktable, and a movable center support on the right side of the worktable; a chuck for clamping the workpiece is mounted at one end of the headstock; a movable dual-axis worktable is mounted on the rear side of the bed, a movable grinding wheel head is mounted on one side of the dual-axis worktable, and a grinding wheel dresser is mounted on the other side; a retractable and rotatable grinding wheel grinding device is mounted at the front end of the grinding wheel head, and a grinding wheel drive device is connected to the grinding wheel grinding device. The bed of this utility model adopts a rectangular structure and is a grinding wheel head movable structure, which, compared with the traditional T-shaped structure machine tool with a movable worktable, has advantages such as high structural rigidity, fast dynamic response speed, good thermal stability, high machining accuracy, and small footprint.

A kind of processing method of metal piece with closed flow channel, the metal piece includes cylinder, and the peripheral wall of the metal piece is internally provided with circumferentially extending flow channel, it is characterized in that, sequentially include the following steps: step one, process annular cover;Step two, print out the blank in cylinder using additive manufacturing technology;Step three, annular groove is milled on the upper end surface of the blank, the mouth of the groove is upward, and at least partially compatible with annular cover;Step four, the annular cover obtained in step one is welded to the blank obtained in step three to close the mouth of the groove.The processing method of metal piece with closed flow channel involved in the present application makes the overall strength of the processed metal piece higher, and the process flow is shorter.

The invention provides a crosslinked polystyrene product and a preparation method thereof, and belongs to the technical field of high polymer material molding.The preparation method comprises the steps that after raw materials are mixed and degassed, prepolymerization is conducted, the density is measured, the casting amount is calculated according to the total volume of the product, the volume fraction (55%-70%) of a center layer, the density and a shrinkage compensation coefficient, and the product is obtained. Carrying out first forming and second forming; according to the preparation method, prepolymerization and step-by-step forming are combined, polymerization heat release is effectively dispersed, and implosion, bubble and crack risks are remarkably reduced, so that the performance consistency of the product is high, a central layer and a peripheral layer are integrally combined on the molecular level through interface swelling and formation of an interpenetrating polymer network, the layering defect is avoided, and the performance uniformity of the product is improved. And through a casting amount calculation model, accurate control over materials is achieved, and the forming repeatability and the size precision are improved.

The automobile front door cover size detection device of the present disclosure comprises a part storage table for placing parts, a part grabbing hand for grabbing parts, a support component for fixing and clamping parts, a detection system comprising a data acquisition element, a data calculation system and a data display system, the data acquisition element is used for acquiring part data, the data calculation system is used for determining part size change value according to part data, and the data display system is used for outputting part size change value; a collaborative robot is used for moving the part grabbing hand, and the collaborative robot is used for moving the data acquisition element; a control system is in communication connection with the part grabbing hand, the detection system and the collaborative robot, the control system is used for outputting detection instructions, the detection instructions comprise gripping instructions, part moving instructions and scanning instructions, the part moving instructions are used for controlling the collaborative robot to move the parts through the part grabbing hand, and the scanning instructions are used for controlling the collaborative robot to move the data acquisition element to scan the parts to acquire part data.

This utility model relates to the field of glass processing technology, and in particular to a fully automatic integrated glass bonding and gluing machine. The fully automatic integrated glass bonding and gluing machine includes: a base, a glass body placed on top of the base, an electric push rod fixedly connected to the top of the base, an extrusion plate fixedly connected to the output end of the electric push rod, adjusting plates equidistantly installed on the top of the base, a first clamping plate fixedly connected to the side of the adjusting plate closest to the glass body, a second clamping plate fixedly connected to the side of the adjusting plate closest to the glass body, a scraper plate installed between multiple sets of corresponding first and second clamping plates, a driving component for moving the adjusting plates, a reciprocating component for reciprocating movement of the scraper plate installed inside the multiple sets of first clamping plates, and an adjusting component for changing the position of the adjusting plates. The fully automatic integrated glass bonding and gluing machine provided by this utility model has the advantages of precise clamping, automatic scraping, and flexible adjustment.

This invention provides a high-strength and high-toughness seamless steel tube for automotive bumper poles and its manufacturing method. The high-strength and high-toughness seamless steel tube for automotive bumper poles comprises an Fe base and chemical elements dispersed in the Fe base in the following mass percentages: C: 0.08–0.22, Si: 0.1–0.45, Mn: 1–1.8, Ni: 0.1–0.6, Cr: 0.05–1, Ti: 0.01–0.05, B: 0.005–0.02, Cu: 0.05–0.5, Al: 0.015–0.06, Nb: 0.01–0.1, N: 0.005–0.015. The high-strength and high-toughness seamless steel tube for automotive bumper poles of this invention exhibits good comprehensive mechanical properties and high dimensional accuracy, especially good straightness, enabling accurate fit with connecting components.

This invention discloses an optimized method for stator and rotor welding processes in the field of motor manufacturing, comprising the following steps: improving welding quality through pretreatment, coating with modified composite materials, and optimizing laser welding parameters. During pretreatment, the stator and rotor areas to be welded are sanded with 800-1200 grit sandpaper, followed by ultrasonic cleaning with acetone or alcohol for 10-15 minutes to achieve a surface roughness Ra ≤ 1.6 μm; a 0.1-0.3 mm thick layer of modified composite material is coated onto one surface and dried at 80-120°C for 1-2 hours; laser welding is employed, with the molten pool temperature monitored at 1800-2200°C during welding; immediately after welding, the welded parts are placed in a holding furnace at 200-300°C for slow cooling for 2-4 hours, and then cooled to room temperature at a rate of 5-10°C / min. This method effectively improves the strength, toughness, and crack resistance of the welded joint, reduces the heat-affected zone, and minimizes deformation.

This invention relates to the field of metal material processing technology. It discloses a synergistic composite forming process for metal wire electroforming and drawing, comprising the following steps: first, surface cleaning and activation treatment of the base metal wire to remove oxide layers, oil stains, and impurities; then, feeding the pretreated wire into an electroforming device to deposit a metal plating layer, obtaining an initial electroformed composite wire; subsequently, direct online radial high-pressure drawing to achieve a dense bond between the electroformed layer and the base metal; followed by annealing of the composite wire; repeating the electroforming, drawing, and annealing steps at least once to complete multiple synergistic cycles; finally, testing the dimensional accuracy, mechanical properties, and interlayer bonding force of the composite wire, and cutting it into finished products after passing the tests. This invention employs an online tandem synergistic process of electroforming and drawing, avoiding plating oxidation and interface contamination. Radial high-pressure drawing can compact the plating layer, eliminate porosity, and improve bonding density.

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 present application relates to the field of die cutting production process, and more particularly to a die cutting process and a die cutting product production line, comprising the following steps: forming a first semi-finished product, the first semi-finished product comprising a release film, a double-sided adhesive and a face paper which are sequentially compounded, wherein the release film is formed with mark point avoidance holes, the double-sided adhesive is formed with through holes, and the mark point avoidance holes are arranged within the range of the through holes; forming a second semi-finished product, the second semi-finished product comprising a PET film, a protective film and a low-adhesion film which are sequentially compounded; forming a third semi-finished product, the third semi-finished product comprising the double-sided adhesive and the second semi-finished product which are sequentially compounded, the double-sided adhesive is compounded with the PET film, and the through holes of the double-sided adhesive are formed with mark points; wherein forming the third semi-finished product comprises the following steps: sequentially compounding the second semi-finished product, the first semi-finished product and a mark point material layer, the mark point material layer is compounded with the release film; and cutting the mark point material layer within the mark point avoidance holes through a flat knife set cutting die, so as to form mark points with a specified appearance on the PET film.

The invention discloses a low-expansion three-temperature cold and hot plate and a preparation method, and belongs to the field of precise alloy components. The cold and hot plate is made of titanium-niobium-based alloy, the titanium-niobium-based alloy comprises, by atomic percent, 25%-35% of Nb, the total content of V and / or Ta smaller than or equal to 3% and the balance Ti, the titanium-niobium-based alloy comprises a three-temperature structure of a low-temperature adaptation area, a normal-temperature stable area and a high-temperature tolerance area, the thickness of the titanium-niobium-based alloy ranges from 1.5 mm to 2 mm, and the surface of the titanium-niobium-based alloy is provided with a nitride layer or a passive film. The preparation method comprises the steps of burdening, 2-3 times of vacuum consumable smelting, hot forging, hot rolling, partition cutting, pre-deformation regulation and control, solid solution quenching, cold rolling finishing, splicing forming and the like, and vacuum stress relief annealing and dual performance detection are matched. The method is suitable for scenes such as chip packaging and precision detection, and is low in cost and high in qualified rate.

This application relates to the field of commercial vehicle body technology, and particularly to a front bulkhead structure for a commercial vehicle. The front bulkhead structure includes a front bulkhead beam, which comprises an upper crossbeam and a lower crossbeam, connected by a front bulkhead longitudinal beam. The upper crossbeam includes an upper crossbeam body and an upper crossbeam armrest mounting location, with the thickness of the armrest mounting location greater than the thickness of the upper crossbeam body. The lower crossbeam includes a mounting bracket, one end of which connects to the front bulkhead longitudinal beam, with the thickness of the mounting bracket greater than the thickness of the upper crossbeam body. This application provides a front bulkhead structure for commercial vehicles to address the problem in related technologies where adding reinforcing plates to strengthen the front bulkhead increases the number of parts and welding processes, making it difficult to achieve lightweight design.

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 utility model discloses a multistage gradient water-cooling quenching mechanism for aluminum profiles, which relates to the technical field of aluminum profile processing and comprises a side frame, a protective cover fixed on the side frame through screws, a multistage gradient quenching component, a quenching control component and a water-cooling circulating component. According to the utility model, the multi-stage gradient quenching assembly is arranged, the flow speed of cooling water of each stage of cooling unit is accurately controlled, and controllable gradient cooling is realized, so that the cooling speed of each part of the aluminum profile tends to be consistent, the deformation stress generated by non-uniform cooling is effectively reduced, and the dimensional accuracy and the surface quality of the aluminum profile are improved; according to the equipment, the temperature change of the aluminum profile can be monitored in real time through the infrared temperature sensor, data are fed back to the control box, the control box automatically adjusts the flow speed of cooling water according to a preset temperature-flow speed curve, automatic and precise control over the cooling process is achieved, and the production efficiency and the stability of the product quality are improved.

The application discloses a transverse stepped gap groove clamp for a classical four-point bending experiment, which comprises an upper clamp, a lower clamp and a positioning connecting piece, standard installation through holes are arranged on the upper clamp, the lower clamp and an experimental sample, the positioning connecting piece passes through the standard installation through holes to realize the connection of the upper clamp, the experimental sample and the lower clamp, stepped gap groove arrays are arranged on working surfaces of the upper clamp and the lower clamp in contact with the experimental sample, the stepped gap groove array comprises a plurality of grooves arranged along the length direction of the upper clamp and the lower clamp, the depth of the groove is arranged along the height direction of the upper clamp and the lower clamp, the depth of the groove is increased or decreased along the length direction of the experimental sample according to a preset gradient, and the height of the groove is arranged along the thickness direction of the upper clamp and the lower clamp. The application can meet the requirement that the four-point bending experiment cannot realize high-throughput gap simulation in a stress corrosion environment, and is used for improving the accuracy, reliability and efficiency of the experiment.

The invention relates to the technical field of metal cutting, in particular to composite brake drum precision turning equipment and method based on a PCBN cutter, and the method specifically comprises the steps that the temperature change and wall thickness distribution in the brake drum machining process are monitored in real time, and the distance between each area and the bottom of the brake drum and the distance between the cutter position and each area position at each moment are combined; constructing a regional comprehensive deformation degree; based on the difference between the regional comprehensive deformation degrees of different regions of each part, the regional deformation difference degree of each part is determined, the historical fluctuation condition of the regional deformation difference degree of each part at the current moment is analyzed, the parameter adjustment coefficient of each part at the current moment is determined, and cutting parameters are optimized in real time according to the coefficient; turning the brake drum; and non-uniform deformation caused by non-uniform wall thickness, heat accumulation and structural constraint can be effectively weakened, the stability of the machining process is improved, and therefore the machining quality of the composite brake drum is improved.

This invention belongs to the field of alloy preparation technology, and specifically relates to a TB5 titanium alloy wire and its cold drawing preparation method. Firstly, the forging and rolling of the TB5 titanium alloy involves selecting a large deformation amount and a low processing temperature, effectively ensuring that the coarse microstructure is broken down to a certain extent, improving the internal structure and increasing plasticity. Then, the surface oxide scale of the TB5 titanium alloy wire is removed to avoid introducing oxygen, hydrogen, nitrogen, and carbon elements. Next, online solution treatment is used to regulate the microstructure, improving the cold working performance and microstructure uniformity of the wire. Finally, roll drawing is performed to cold work the wire to reduce its diameter, effectively avoiding problems such as film adhesion and surface scratches, extending the service life of the drawing die. Simultaneously, the TB5 titanium alloy wire exhibits good grain size and microstructure uniformity, meeting the requirements for use. The final TB5 titanium alloy wire is delivered directly in a bright state and can be used for subsequent processing.

The present application relates to a kind of production methods of double-layer alloy composite seamless pipe.The outer layer material of double-layer alloy composite seamless pipe is low-carbon steel, the inner layer material is nickel-based alloy, outer layer alloy bar material is continuous casting billet or rolling blank, and inner layer alloy bar material is forging blank.The production steps are: (1) blank preparation; (2) upsetting; (3) blank machining; (4) hot expansion; (5) hot extrusion; (6) heat treatment; (7) surface treatment; (8) cold rolling; (9) finishing treatment.The blank preparation process includes: (1) theoretical calculation; (2) blanking; (3) electroplating; (4) blank assembly; (5) head and tail pad welding.The double-layer alloy composite seamless pipe produced by the present application has firm combination of the inner and outer layers of alloy, reduces the defects of extrusion delamination, the outer layer alloy has high strength, the inner layer alloy has good corrosion resistance, improves the yield rate of processing defects, and reduces material cost.

This invention discloses a high-precision focusing method and apparatus for part images based on improved gradient weighting. First, the Otsu adaptive segmentation threshold is improved to enhance edge extraction accuracy. Next, the gradient values ​​of edge pixels are obtained based on a 4-directional Sobel operator to improve gradient accuracy. Then, the pixel gradient weighting coefficients are obtained based on the difference in grayscale distribution between the edge pixel and its 8 neighboring pixels, enhancing the sensitivity and noise resistance of the gradient weighting algorithm. Finally, the image sharpness is evaluated by improving the gradient weighting focusing evaluation function, thereby improving the focusing accuracy of the part image. This invention effectively improves the accuracy of image focusing, which is of great significance for improving the accuracy of visual measurement of part dimensions.