92 results about "Multiple pass" patented technology

The invention discloses a high-surface-quality invar alloy cold-rolled steel strip and a manufacturing method thereof.The manufacturing method comprises the working procedures of acid pickling, cold rolling and pre-pressing, coping, cold rolling and rolling, cleaning, annealing, leveling, shearing and packaging, the surface of an invar alloy hot-rolled steel coil is subjected to acid pickling through a mixed acid solution, cold rolling and pre-pressing are conducted through three-pass cold rolling and rolling, and the surface quality of the invar alloy hot-rolled steel coil is improved. At least three pairs of grinding heads are adopted for grinding, the grinding frequency is not less than 3 times, multi-pass cold rolling is carried out after grinding, the number n of rolling passes meets the condition that n is larger than or equal to 0.5 * m + 1, m is the thickness of the ground cold-rolled steel strip, and the unit is mm. According to the method, the technical problems that the surface quality of the invar alloy cold-rolled strip is difficult to control, the requirement is high and the like can be effectively solved, invar alloy products with high surface quality and high plate shape requirement are prepared, and the high-surface-quality use requirement of a user is met.

The invention belongs to the technical field of titanium welding wire preparation, and discloses a preparation method of a low-cost low-hydrogen titanium welding wire. The method comprises the following steps: preparing a titanium alloy wire rod; under the room temperature condition, multi-pass continuous cold drawing operation is conducted on the titanium alloy wire rod, a plurality of drawing dies are detachably installed on the same continuous drawing machine or a plurality of continuous drawing machines connected in series, so that a wire material continuously passes through the multiple drawing dies at a time to complete multi-pass deformation, and the wire rod is subjected to continuous cold drawing. The pass deformation of the multi-pass continuous cold drawing is designed to be a starting stage, a middle stage and a final stage, and the single-pass deformation of the starting stage and the single-pass deformation of the final stage are smaller than the single-pass deformation of the middle stage; in the middle stage process or after the middle stage process, on-line annealing treatment is carried out on the wire, and on-line annealing is carried out under argon protection; and the wire material subjected to online annealing treatment is subjected to polishing and lower breaking or close arrangement treatment, and a titanium alloy welding wire finished product is obtained. The titanium welding wire prepared through the method is low in hydrogen content, high in preparation efficiency and low in cost.

The invention relates to a weldless carriage bottom plate production process based on extrusion welding, and belongs to the technical field of extrusion welding, an aluminum alloy coiled material is firstly subjected to multi-pass rolling forming, wrinkling and cracking caused by one-time large deformation are avoided, a precision foundation is laid for follow-up triangular groove forming, then extrusion is conducted through a roller with a triangular cavity, and the weldless carriage bottom plate is obtained. Compared with a rectangular groove, the weldless compartment bottom plate solves the problems that lateral pressure resistance is weak and stress is easy to concentrate when a forklift forks, the pressure resistance is enhanced, a transition angle is formed in the third-pass sharp-corner finish roll extrusion forming process, the sharp-corner cracking risk is eliminated, and the service life of the compartment bottom plate is prolonged. The forking deformation resistance of the forklift is further improved; the top of the triangular groove is welded through laser welding, the problems that traditional welding has many defects and is low in strength are solved, defects such as air holes in a welding seam are reduced or closed through rolling operation after laser welding, residual stress is released, and the compactness of the welding seam is improved.

A method for controlling the structure uniformity of a large-size ultralow-expansion alloy bar comprises the following steps that (1) an ultralow-expansion alloy electroslag ingot with the diameter larger than that of the bar is heated to 1100-1130 DEG C, and heat preservation is conducted for 3-4 hours; (2) the heated electroslag ingot is subjected to multi-pass drawing-out and anvil forging rounding, and a cogging bar with the diameter being phi 330-phi 370 mm is obtained; (3) the surface of the cogging rod is subjected to sanding treatment, and then the cogging rod is fully coated with heat preservation paint; (4) the treated cogging rod is heated to 1050-1100 DEG C, and heat preservation is conducted for 2-3 hours; the upsetting ratio and the drawing-out ratio of the first time are controlled to be 1.3-1.6, the upsetting ratio of the second time is controlled to be 1.3-1.6, the drawing-out ratio is larger than 2.4, then rounding is conducted, a finished bar is obtained through water cooling, and (6) the radial thickness of the finished bar is removed by 10-20 mm through turning, and the finished large-specification ultralow-expansion alloy bar with the diameter being 230-250 mm is obtained.

An ohmic heater for the heating of a conductive fluid is comprised of a number of selectable electrodes, arrayed in such a way as to form a single pass-through from inlet to outlet. A series of flow conduits are provided to direct the flow across the faces of adjacent electrodes. The flow conduits are further configured such that the flow path makes multiple passes across the same adjacent set of electrode faces.

The present application relates to inkjet printing technology field, provide a jack shift inkjet printing method, inkjet vehicle includes multiple groups of nozzles, realize different color ink drawing, each group of nozzles includes multiple in Y direction on the arrangement, same color nozzle, nozzle is arranged into multiple rows in X direction, A nozzle and B nozzle are any two rows, the distance of A nozzle and B nozzle in Y direction is L, each nozzle includes multiple orifices, the distance of orifice in Y is delta, with a position on the printing platform as initial position, to solve the problem of improving graphic printing resolution in the premise of guaranteeing production efficiency and controlling printer cost in multiple PASS inkjet printing, the influence of color difference brought by different nozzles in printing process is reduced, the resolution of printing effect is improved by multiple coverage inkjet, the cost of using multiple groups of nozzles is reduced, the number of multiple PASS printing is reduced, and printing efficiency is effectively improved.

This disclosure provides a process for preparing fine-grained nickel-titanium shape memory alloy rods for medical use, comprising: forging a heated nickel-titanium alloy ingot through multiple passes, performing multiple high-temperature continuous rolling passes, and then performing thermomechanical treatment to obtain fine-grained nickel-titanium shape memory alloy rods. This invention, through a combination of specific multi-pass forging and strictly temperature-controlled high-temperature continuous rolling, utilizes a robust dynamic recrystallization mechanism to fundamentally refine and homogenize the austenitic matrix grains, and completely breaks down the continuous brittle Ti2Ni phase distributed along the grain boundaries into a randomly dispersed distribution, thereby obtaining fine-grained nickel-titanium alloy rods with high purity and excellent microstructure. This solves the practical problems caused by the coarse grains and brittle phase segregation of the original cast nickel-titanium alloy, such as easy intergranular fracture, difficult processing and forming, low yield, and poor fatigue life in medical applications.

The present application relates to a kind of metal matrix composite prepared by friction stir processing method, including the mixing of metal matrix composite reinforcement and substrate powder, according to the size of stir pin and shaft shoulder in the stir head of friction stir equipment, using milling cutter to open the groove on pure metal mold, the width is greater than the diameter of stir pin, the depth is greater than the length of stir pin;Reinforcement and substrate powder mixture is added to the groove and is maximized compaction, in the processing area of special friction stir welding machine, the center of stir pin of stir head is aligned with the center of groove, is prepared under the processing scheme of multiple passes variable stir head speed, obtains metal matrix composite at the groove of composite plate processing area, the obtained metal matrix composite reinforcement is uniformly distributed, and the mechanical and friction and wear performance is excellent.The present application can automatically prepare a variety of different kinds of metal matrix composite, without determining specific process parameters for different kinds of metal and reinforcement test, and is widely applicable.

The application relates to the technical field of heat sealing equipment, and discloses an inflating product processing heat sealing machine, which comprises a supporting table and a sliding frame, the supporting table is provided with a lifting table, the bottom of the lifting table is provided with an upper die, the sliding frame is slidably connected with a moving table, the moving table is connected with a lower die through an adjusting table, the adjusting table can adjust the angle and position of the moving table, a camera is arranged above the lower die, and the camera is connected with a visual positioning system. The inflating product processing heat sealing machine can roll and press the cloth through the extruding piece before heat sealing, can flatten the cloth, can reduce the probability of wrinkles near the weld, can discharge the air between the cloth layers, can avoid air gaps, can improve the heat sealing quality, can make the produced inflating product have good air tightness, and can stop at a predetermined position when rolling and pressing the cloth, can verify the positioning accuracy through physics and vision multiple times, and can improve the positioning reliability.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may perform a crest factor reduction on a radio frequency (RF) waveform in multiple passes, wherein the multiple passes each include: a clipping operation to reduce a peak-to-average power ratio (PAPR) associated with the RF waveform according to a threshold; and a filtering operation to remove at least a portion of out-of-band emission from the clipped RF waveform. The UE may transmit the RF waveform over a wireless channel, wherein the RF waveform transmitted over the wireless channel satisfies a spectral mask. Numerous other aspects are described.

The invention discloses a manufacturing method of an automobile high-strength steel part shaped like a Chinese character'ri 'based on laser rolling forming. The manufacturing method comprises the following steps that preparation work is completed; bending and forming the plate by using a robot; for the horizontally-arranged plate, the second end is sequentially bent vertically upwards, horizontally inwards and vertically downwards, so that the second end makes contact with the upper surface of the non-bent plate, and a closed rectangular pipe is formed; the first end is vertically and upwards bent and horizontally and inwards bent in sequence to form a C-shaped pipe, the first end makes contact with the outer surface of the bent position of the closed rectangular pipe, and closing is formed; laser filling wire fusion welding is carried out on the two connectors, and a closed pipe shaped like a Chinese character'ri 'is formed; and carrying out aerial fog shaping, cooling and straightening after welding. According to the manufacturing method, high-precision and low-resilience manufacturing of bumpers made of high-strength steel, ultrahigh-strength steel and light-weight materials can be achieved, the precision, strength and light-weight level of products can be improved, and meanwhile the industrial common problems that in a traditional technology, the number of passes is large, resilience is large, and energy consumption is high are solved.

An optical parametric multi-pass apparatus for generating laser radiation through optical parametric amplification or generation converts pump radiation into signal and idler radiation. It includes a multi-pass device with multiple mirror elements arranged to provide several beam paths from an input section to an output section of the device. The input section receives pump radiation, and the output section delivers signal radiation as the generated laser output. At least one optically nonlinear crystal is positioned within the device to enable the parametric process using the pump radiation. The mirror configuration ensures multiple passes of the beam paths through the crystal. The device is further designed to filter along the beam paths so that idler radiation is suppressed after at least one pass. A corresponding laser apparatus and method for generating laser radiation are also described.

This invention discloses a method for preparing Nb3Sn graphene composite superconducting absorbing material, comprising: preparing an Nb-Sn-Gr composite film using the sol-gel method; coating the Nb-Sn-Gr composite film onto a TaTi alloy rod and then loading it into a SnCu alloy tube, which is then loaded into a CuNb composite tube and drawn through multiple passes to obtain an inner-tin Nb3Sn subunit; loading the inner-tin Nb3Sn subunit into a Ta tube; uniformly filling the outside of the Ta tube with nitrogen-doped porous graphene-coated copper powder; loading it into an oxygen-free copper tube; and drawing through multiple passes to obtain the Nb3Sn graphene composite superconducting absorbing material. The Nb-Sn-Gr composite film and nitrogen-doped porous graphene-coated copper powder in this invention enable the Nb3Sn graphene composite superconducting absorbing material to maintain intrinsic superconducting properties such as high critical current density and upper critical field, while also possessing stable and efficient electromagnetic wave absorption capabilities under low temperature and strong magnetic field environments.

The invention relates to the technical field of titanium alloy seamless tube manufacturing, in particular to a preparation method of a titanium alloy six-rib special-shaped seamless tube, which comprises the following steps of: a, mixing and pressing raw materials into a plurality of electrode blocks; b, the consumable electrode is smelted to obtain a titanium alloy cast ingot; c, the titanium alloy cast ingot is subjected to multi-heating-number upsetting and drawing forging and one-heating-number precision forging, and a titanium alloy bar is obtained; d, the obtained titanium alloy bar is annealed and then machined into an extrusion blank pipe; e, the cold-rolled blank pipe is subjected to multi-pass cold rolling to form an intermediate pipe blank; f, the middle pipe blank is subjected to drawing treatment, and a polished pipe is obtained; g, cold rolling the polished tube into a semi-finished special-shaped seamless tube; and h, the special-shaped seamless pipe semi-finished product is sequentially subjected to acid pickling, abrasive particle flow and annealing treatment, and the finished titanium alloy six-rib special-shaped seamless pipe is obtained. The preparation method can effectively improve the yield of the titanium alloy ribbed special-shaped seamless pipe, and is beneficial to large-scale use.

The mass spectrometer includes a storage device and an analyzer. The analyzer includes a mirror, an accelerator that receives ions from the storage device and pulses them onto one of the mirrors, causing the ions to reflect back and forth in a first dimension between the mirrors as the ions drift in the drift dimension, a reflector that reflects the ions in the drift dimension, a detector, and control circuitry that activates the reflector to make multiple passes along the drift dimension and deactivates one of the reflectors so that the ions pass to the detector and can be detected, the timing of the reflector activation and deactivation being such that only ions within a first range of mass-to-charge ratios undergo the same number of passes in the drift dimension at any one time that they are detected by the detector. The control circuitry synchronizes the time of pulses from the storage device with the time of pulses from the ion accelerator so that only ions having a mass-to-charge ratio within the first range are pulsed onto one of the mirrors by the accelerator.

Sampling optics for spectroscopic analysis include an array of optical elements as opposed to a single objective as used in conventional systems, achieving enhanced collection, inherent signal integration / averaging and improved measurement uniformity. At the same time, the etendue using the array is substantially the same as the etendue using a single-element objective. The array of closely packed optical elements may have spherical or aspherical surfaces and may be transmissive or reflective. An array of lenses and reflective elements may be arranged together in flow cell configurations and / or for signal amplification involving multiple passes through a sample medium. The array elements may be arranged in hexagonal, linear, radial or other packing geometries and may be implemented as a flat or curved panel. The present disclosure is applicable to remote fiber probes and flow cell geometries to measure solids, liquids, gasses and semi-liquid such as slurries.

This invention relates to the field of superconducting material processing technology, specifically to a method for preparing Nb3Sn superconducting wires. The invention mainly involves inserting an Nb-Zr alloy into the exterior and / or center of a Sn-Cu single-core rod, filling the space between the Nb-Zr alloy and the Sn-Cu single-core rod with oxide powder, and then inserting it into a copper substrate. After multiple passes of stretching, forming, and length-cutting, Nb3Sn sub-components are obtained. These Nb3Sn sub-components are then uniformly arranged circumferentially within a copper tube to form a bundle, followed by multiple passes of stretching, heat treatment, and cutting to obtain the Nb3Sn superconducting wire. This invention enhances the critical current density of the Nb3Sn superconducting wire under high magnetic fields of 8T–16T by introducing an artificially pinned array with a density gradient distribution. This solves the problem of the matching effect produced by existing uniform artificially pinned center schemes, which limits the practical application of superconducting wires, and alleviates the decrease in critical current density of Nb3Sn superconducting wires under high fields.

The invention discloses a preparation method of a loose body based on an optical fiber preform, and relates to the technical field of optical fiber processing. The method comprises the following steps: SS01, depositing a barrier layer by adopting an MCVD (modified chemical vapor deposition) process; sS02, multi-time deposition of a loose core layer is conducted through the MCVD deposition technology; sS03, preparing a doping solution containing rare earth ions and aluminum ions; sS04, off-line solution doping is carried out, and a vacuum pressurization alternate driving mode is adopted in the doping process. The porosity of the loose core layer is gradually reduced from inside to outside, a permeation resistance gradient is formed, the high porosity of the inner layer provides sufficient permeation channels, the low porosity of the outer layer plays a role of a barrier layer, rare earth ions are prevented from being adsorbed by the surface layer too early and exhausted in the doping process, and the rare earth ions are prevented from being adsorbed by the surface layer too early and exhausted through the forced permeation effect of vacuum pressurization alternate driving. Dissolved gas is discharged through vacuumizing operation after each stage of pressurization, space is vacated for next-stage permeation, and the rare earth ions are evenly distributed in the radial direction of the loose body.

The application discloses a kind of based on non-interacting polarization multiplexing multi-path pulse compression device and method, it is related to ultrafast laser technology and nonlinear optics field, device includes: first polarization beam splitter, Faraday rotator, second polarization beam splitter and dispersion compensation module, dispersion compensation module is used to make pulse multiple pass through same dispersion compensation element and form return pulse, return pulse is converted into polarization state orthogonal with incident state by Faraday rotator after by first polarization beam splitter output. By Faraday non-interacting coaxial architecture, pulse keeps high-efficiency polarization matching, reduces astigmatism, spatial chirp and energy loss caused by off-axis folding, and when target dispersion amount is certain, optical envelope volume is reduced, and element light aperture requirement is reduced;While pulse compression and reverse light isolation are integrated in the same magneto-optical component, reduce the number of discrete components, improve system compactness and stability.

The application discloses a kind of insertion point printing deviation detection method, device, equipment and storage medium, it is related to ink-jet printing technical field.The method is by printing first detection diagram on printing medium to obtain the second detection diagram for detecting whether insertion point printing exists deviation;Wherein, first detection diagram includes first detection part and second detection part, first detection part includes a plurality of first detection lines arranged in ladder shape along first direction, and second detection part includes a plurality of second detection lines arranged in ladder shape along second direction;Second detection diagram obtained according to first detection diagram can quickly detect and obtain insertion point deviation value or step distance deviation value in insertion point printing in ink-jet head, insertion point printing between ink-jet heads or multiple Pass insertion point printing, and moreover, the insertion point deviation value obtained can be accurate to within decimal pixel, greatly improve the precision of detection, user can quickly and accurately correct insertion point deviation or step distance deviation according to second detection diagram, to improve image printing precision and quality.

The invention provides a method for regulating and controlling the average grain diameter of a copper-nickel alloy B30 flange forge piece, which comprises the following steps of: S1, blanking a bar billet: selecting a copper-nickel alloy BFe30-1-1 bar billet as a raw material of a flange forge piece to be manufactured, and blanking and cutting; s2, heating is conducted, specifically, the copper-nickel alloy BFe30-1-1 bar billet is heated; s3, upsetting and drawing forging is conducted, specifically, the heated blank is subjected to multi-pass drawing and upsetting in a free forging mode; the original blank is forged into a round cake shape matched with the die cavity through integral upsetting, drawing, cogging and forging; s4, die forging forming is conducted, specifically, the round-cake-shaped forge piece subjected to upsetting and cogging is placed into a corresponding die cavity, and die forging forming is conducted; and S5, annealing treatment. According to the method for regulating and controlling the average grain diameter of the copper-nickel alloy BFe30 flange forge piece, the obtained flange forge piece has high mechanical performance, corrosion resistance and the average grain diameter, and the average grain diameter ranges from 0.05 mm to 0.1 mm.

The utility model discloses a multi-pass type shot blasting machine auger sand leakage dust recovery device, which relates to the technical field of multi-pass type shot blasting machines, and comprises a case, a secondary screening mechanism arranged in the case, and a dust removal mechanism arranged in the case, the screening assembly is arranged on the outer wall of the machine box and used for screening and filtering materials containing iron powder, dust and shots generated by sand leakage of the multi-pass type shot blasting machine auger entering the machine box, the dust pumping assembly is arranged on the outer wall of the machine box and used for pumping fine dust entering the machine box, and the multi-pass type shot blasting machine auger sand leakage dust recycling device is provided with a secondary screening mechanism; the secondary screening mechanism can be used for finely screening the sand leakage dust of the auger and classifying different particle sizes in the dust, so that the recycled dust is purer, the recycling quality and the recycling value of the dust are improved, the recycled dust can be recycled, for example, the recycled dust can be used as a raw material of a building material, a coating and the like, and resources are saved.

The application discloses a kind of preparation methods of 4J50-CNTs / Cu composite wire for electronic packaging, comprising the following steps: one, carbon nanotube powder is dispersed, to obtain precursor liquid;Two, Cu (NO3) 2 and tween are added to precursor liquid, to obtain mixed precursor liquid;Three, ammonia is added in mixed precursor liquid, to obtain reaction liquid;Four, the reaction liquid is filtered, to obtain oxidized carbon nanotube / copper oxide powder;Five, the powder is reduced, to obtain surface modified carbon nanotube composite powder;Six, the composite powder is sintered, to obtain composite bar;Seven, composite bar and sheath hydraulic pressure expansion, to obtain composite ingot;Eight, the composite ingot is cold isostatic pressing and hot extrusion, to obtain extruded bar blank;Nine, the extruded bar blank is drawn in multiple passes, to obtain composite wire.The wire of the application significantly improves the strength and the electrically conductive and thermally conductive performance under the premise of ensuring not to sacrifice its original air tightness and low expansion coefficient, and lays a foundation for the development of high-performance electronic components.

A multiple pass self-cinching suture construct includes a strand of suture material. A fixed loop is formed at one end, and an adjustable loop is formed at the opposite end. A self-cinching section is disposed between the fixed loop and the adjustable loop. The self-cinching section includes a first pass of a tag end axially through the interior of the self-sinching section to form the fixed loop. The opposite tag end passes axially through the interior of two co-axial suture segments inside the self-cinching section, forming an adjustable loop. As the adjustable loop tag end is pulled, tension is applied and the self-cinching section constricts to maintain tension. In some embodiments, the self-cinching section includes at least four segments of the strand of suture material co-axially aligned along the self-cinching section.

The application discloses a kind of based on crystallizer electromagnetic stirring bar surface inclusion control method, belong to steel metallurgy continuous casting and rolling technical field.The method first establishes the finite element model of multiple pass rolling process from continuous casting billet to target bar, and using node reverse tracking technology, the specific area of continuous casting billet that has decisive influence on bar surface quality is determined as target clean control area.Subsequently, the multi-physics field coupling model of flow, solidification and inclusion movement in crystallizer is constructed, and the installation position of crystallizer electromagnetic stirrer that can make the inclusion capture probability in target clean control area be reduced to the lowest is determined as the optimal process position by simulation analysis.Finally, electromagnetic stirrer is installed according to this position in actual continuous casting production and production is carried out.The application realizes accurate targeted control of cleanliness of key area of continuous casting billet from the requirement of final product quality, and significantly improves the surface quality and service performance of high fatigue requirement steel such as bearing steel.

The application discloses a multi-pass uniform pumping laser device based on blackbody absorption, which comprises a pumping light source, a waveguide and a solid laser medium arranged along an optical path, and a curved surface reflecting device which is arranged on the same side of the pumping light source relative to the solid laser medium and forms a blackbody structure with the solid laser medium, and is used for reflecting the pumping light emitted after being absorbed by the solid laser medium back to the solid laser medium, so that the solid laser medium absorbs the pumping light for multiple passes, and generates and laterally outputs a laser beam. The application utilizes the curved surface reflecting device and the solid laser medium to form a blackbody structure to absorb the pumping light for multiple passes, increases the absorption length of the solid laser medium, can realize uniform pumping, reduces the thermal gradient, reduces the laser threshold, and improves the laser efficiency.

The invention relates to the technical field of dry rolling of electrodes of lithium batteries, and discloses a dry membrane preparation device for preparing a lithium battery pole piece, which is characterized by comprising: a plane calendering mechanism capable of performing primary calendering on dry electrode powder in a surface contact calendering mode to form an initial membrane; and the multi-rolling mechanism is arranged on the discharging side of the plane rolling mechanism and used for receiving the initial membrane, the multi-rolling mechanism comprises a plurality of rolling structures which are arranged in series, the rolling gaps between the adjacent rolling structures are gradually reduced step by step, and the multi-rolling mechanism is used for carrying out gradual thinning rolling on the initial membrane to form a target membrane. Through the synergistic effect of'plane calendering preliminary forming 'and'multiple progressive rolling finishing', the lithium battery dry-method electrode diaphragm which is high in density, uniform in structure, excellent in interface performance and controllable in thickness can be efficiently and stably prepared; the dry-method membrane preparation device effectively solves the technical problems that powder is difficult to form, easy to crack, low in thickness and density control precision and the like in a dry-method membrane preparation process.

The present application relates to a kind of continuous rolling mill backup roll's forging tool and forging method, belong to backup roll forging technical field, solve the technical problems of the heart of the forging piece flaw detection unqualified, more forging piece surface crack and low forging production efficiency in prior art.The forging tool includes full coverage wide flat anvil auxiliary tool;Full coverage wide flat anvil auxiliary tool includes upper flat anvil and lower flat anvil;The structure and size of upper flat anvil and lower flat anvil are same and completely cover blank between upper flat anvil and lower flat anvil.The forging method includes: step 1, using full coverage wide flat anvil auxiliary tool to carry out multiple pass square bar drawing, chamfering and roundness;Step 2, after roundness, blank both ends are cut off, and the roll neck of the length of the nozzle section and the riser end is drawn, finally finishing product, obtains continuous rolling mill backup roll.The present application improves the surface quality of backup roll, and greatly saves production cost, improves production efficiency.

The application discloses a kind of based on machine vision's weld defect mobile scanning device, belong to detection technical field.It includes mobile scanning device and visual scanning unit, transverse sliding groove can adjust camera and light source position left and right, a set of device can cover flat plate welding, pipeline welding and multiple pass welding and multiple working conditions, equipment versatility is better, light source module adopts strip light source and top light source combination arrangement, strip light source is illuminated with low angle side, utilize the texture difference of defect and base material to highlight crack, bite edge profile;Top light source provides high uniformity diffuse illumination, inhibits metal surface specular reflection and glare;Adjusting pivot drives light source support swing, can adjust illumination direction for different bevel angle and surface roughness, shaft end fixed seat is locked after scanning, and will not run position by oneself. Multi-light source cooperation makes image signal-to-noise ratio improve, defect edge is clearer, provides high-quality image source for rear-end machine vision algorithm to identify crack, porosity, incomplete penetration and other defects.

Current approaches to generating rolling-ball bend faces are computationally inefficient, or result in defects, among other technical issues. A computing system can be configured to generate rolling-ball blend faces on a graphics processing unit (GPU) via multiple passes.