126 results about "Laser polishing" patented technology

The invention relates to the technical field of optical engineering, in particular to an AI silicon carbide lens-oriented aspheric laser polishing precision online detection and feedback system. Comprising a detection module; the data processing module is electrically connected with the detection module and used for constructing a lens surface three-dimensional model and calculating polishing precision parameters; the feedback control module is electrically connected with the data processing module, is used for generating a feedback control strategy and comprises a strategy generation unit and a parameter optimization unit; an execution module; and an intelligent learning module. According to the design, a laser measuring head, an energy sensor array and an environment sensor are integrated through the detection module, synchronous acquisition of multi-dimensional data such as surface profile, laser energy distribution and environment parameters is realized, and three-dimensional point cloud data with consistent time and space are generated through multi-modal fusion processing (time domain synchronization, space registration and feature enhancement) of the data preprocessing unit; the physical essence of the polishing process is completely represented, and the detection comprehensiveness and the data relevance are improved.

A glassy electroactive prepreg made by generating submicron particles of lithium-ion conducting sulfide glass by providing lithium-ion conducting sulfide glass feedstock material, and subjecting the feedstock material to subzero processing to transform the material into submicron particles can avoid plastic deformation of sulfide glass particles during grinding and produce submicron powders. The prepreg is formed by providing a porous electroactive layer comprising electroactive material, and infiltrating the porous electroactive layer with the submicron particles of lithium-ion conducting sulfide glass. The subzero processing can include cryogenic processing. The prepreg can be used to form glassy embedded electrodes.

The present invention discloses an optimization polishing method and system for nonferrous metal alloy die castings, which relates to the technical field of optimization polishing of alloy die castings, and includes the following steps: the laser polishing equipment first performs surface treatment on the zinc-aluminum alloy die castings at an initial scanning speed, and at the same time, the visual inspection system obtains the defect data on the surface of the casting in real time, dynamically tracks the surface changes of the casting, and provides accurate input for intelligent evaluation. The present invention combines the laser polishing equipment and the visual inspection system to identify the surface defects of the casting in real time and dynamically adjust the laser scanning speed and power, thereby solving the problem of uneven surface caused by fixed scanning speed. The system intelligently evaluates the severity of defects, ensures that the laser energy acts evenly on the surface, avoids overheating or insufficient treatment, improves the surface finish and appearance quality of the casting, reduces surface damage and material waste, and thus improves production efficiency and product performance.

The invention discloses a fused quartz high-precision surface laser double-sided polishing method, and belongs to the technical field of optical element laser processing. In order to solve the problem of surface shape distortion of the fused quartz element under the existing laser polishing process, the method comprises the following steps: firstly, ultrasonically cleaning the fused quartz element and blow-drying the fused quartz element by using compressed air; the morphology distribution of the fused quartz after laser polishing is simulated through finite element simulation, and the scanning speed is optimized; polishing the target surface according to the process parameters and the processing path after the scanning speed is optimized; the internal temperature distribution of the fused quartz after laser polishing is obtained through finite element simulation, and the polishing power of elements with different thicknesses is optimized; the back face of the target face is polished through the optimized laser power; and after laser polishing, carrying out ultrasonic cleaning and drying again. The method is simple in process and low in cost, the surface shape quality can be remarkably improved, the roughness is reduced, the time cost consumed by a parameter cross experiment is avoided, and optimization of laser polishing parameters is efficiently achieved.

The invention relates to the field of ultra-precision polishing, in particular to an in-situ laser polishing system for a diamond turning metal surface. Comprising a turning tool servo shaft, a laser polishing assembly and a controller, a laser emitting part is arranged on the turning tool servo shaft, and the controller is used for controlling polishing laser emitted by the laser emitting part to move and scan on the surface of a turned workpiece in the direction perpendicular to the turning path. The distance between two adjacent scanning paths is smaller than the diameter of the Gaussian beam. According to the invention, the laser polishing system is integrated on the ultra-precision machine tool, so that the turning and polishing processes of the workpiece can be completed under the same clamping, and secondary clamping and repositioning, introduced scratches and clamping errors are avoided. And meanwhile, the surface of the workpiece is heated through the out-of-focus light spots, so that the material in the area is in a flowable state after being heated, and under the action of gravity or self-tension, the material at the high position moves to the low position, so that the self-leveling effect is achieved, and the surface roughness is reduced.

The invention provides a laser polishing device combining gas protection and substrate heat dissipation and a using method. The device comprises a focus lens (1), a laser beam (2), a to-be-polished sample piece (3), a gas nozzle (4), a gas pipe (5), a high-pressure gas cylinder (6), a dust collector (7), a cooling liquid level (8), a metal substrate (9), an objective table (10), a water tank (11) and a laser (12). The invention further relates to a using method of the device. A micro-nano coarse structure is formed on the surface of the metal substrate through chemical etching, electrochemical etching or laser etching and the like, then a hydrophilic oxide layer is introduced through oxidation treatment or plasma treatment, and the super-hydrophilic performance of the metal substrate is further enhanced. The device has excellent liquid cooling capacity, gas protection performance and oxidation resistance, heat can be efficiently conducted and dissipated in the laser polishing process, the temperature uniformity of the surface of a sample is ensured, and overheating and oxidation phenomena are prevented.

The invention discloses a laser polishing device for the inner wall of an outer tire of an automobile tire, which relates to the technical field of automobile tire repair and comprises a driving mechanism, a limiting mechanism, an adjusting mechanism and a polishing mechanism. According to the tire polishing device, firstly, when the tire polishing device is used, a self-locking motor is started, a first gear at the rotating end of a transmission box rotates, an annular transmission plate is driven to rotate through a series of transmission mechanisms, it is kept that a polishing mechanism can be arranged in a tire in a suspended mode, and convenience is provided for follow-up laser polishing; through a complex gear transmission system, outward extension of the two adjusting columns is achieved, so that the laser processing width of the grinding mechanism is adjusted, accurate adjustment of the grinding mechanism is achieved, meanwhile, the processing efficiency is improved, the labor cost is reduced, it is ensured that the equipment can meet the grinding requirements of different tires through adjustment, and the adaptability of the device is improved.

The utility model discloses a composite laser polishing device based on ultrasonic micro-forging, which comprises a sealed cabin, a three-axis guide rail system arranged in the sealed cabin and driven by a motor, a rotating disc arranged on a Z-axis direction movement guide rail, a replaceable working panel mounted on the rotating disc, an inflation switch, an exhaust switch and a clamp mounted on the working panel, the ultrasonic micro-forging device cabin is arranged on the Z-axis direction movement guide rail; and the ultrasonic generator is matched with the ultrasonic micro-forging device cabin. A cabin pressure detection sensor and an oxygen concentration sensor are arranged in the sealed cabin; the system further comprises an infrared optical fiber laser, an integrated ultraviolet optical fiber laser and corresponding optical assemblies. According to the polishing device, an oxide layer on the surface of a workpiece is removed in a pulse mode of the infrared laser, and then the continuous mode is switched for fine polishing. The ultraviolet laser adopts a pulse mode to assist in machining, and the ultraviolet laser and the pulse mode cooperate to improve the polishing effect. And after polishing is completed, the surface of the workpiece is subjected to strengthening treatment through an ultrasonic micro-forging device.

The invention discloses a perovskite thin film, a photoelectric device and a method for improving the surface quality of the perovskite thin film. The method for improving the surface quality of the perovskite thin film comprises the following steps: S1, preparing the perovskite thin film; s2, performing picosecond pulse laser surface polishing treatment; and S3, guanidine ion implantation and repair: applying a guanidine salt solution to the surface of the perovskite thin film, removing the redundant guanidine salt solution on the surface of the perovskite thin film after the guanidine ions are implanted into the surface of the perovskite thin film, and then carrying out annealing treatment. According to the method, the surface of the perovskite thin film is polished through the picosecond pulse laser, the roughness of the surface of the perovskite is effectively reduced, a surface layer rich in defects is removed, guanidine ions are selectively implanted again through a multi-A-site vacancy structure formed on the surface of the perovskite thin film subjected to laser polishing, multiple hydrogen bonds are formed through the guanidine ions and a perovskite framework, and the surface roughness of the perovskite thin film is effectively reduced. And deep and stable defect passivation and lattice strengthening are realized, and the high-quality perovskite thin film with smooth surface, low defect density and high stability is obtained.

The utility model discloses a three-dimensional dynamic laser polishing line, and relates to the technical field of laser polishing, the three-dimensional dynamic laser polishing line comprises a first electric roller line, a second electric roller line and a third electric roller line which are arranged on the same horizontal line, one end of the first electric roller line is a manual workpiece feeding part, a front polishing mechanism is arranged on the first electric roller line, and the other end of the first electric roller line is provided with a rear polishing mechanism. A workpiece overturning mechanism is installed on the second electric roller line, a reverse face grinding mechanism is installed on the third electric roller line, and the tail end of the third electric roller line is a manual workpiece discharging part. According to the utility model, the pulse laser, the dynamic galvanometer assembly and the plurality of electric roller wires are adopted to polish a product, and laser is utilized to carry out three-dimensional polishing processing on a workpiece, so that environmental pollution and possible mechanical damage to the workpiece are completely eradicated.

Method for producing a workpiece (64) made of quartz glass, which has at least one melt-polished workpiece surface (113) for use in a plasma-assisted manufacturing process, comprising the process steps: a) Providing a workpiece (64) made of quartz glass which has at least one raw surface (111) produced by cutting or machining, and b) Polishing the raw surface (111) to the polished workpiece surface (113) by laser polishing using at least one laser beam (81) moving relative to the raw surface (111), wherein the relative movement is generated by superimposing a translational-oscillating movement and a feed movement, wherein, as a result of the translational-oscillating movement, a quasi-line (87) is generated by a relative velocity between the raw surface (111) and the laser beam (81) above 500 mm / s, and wherein the feed movement has a relative velocity between the raw surface (111) and the laser beam (81) between 1 mm / s and 50 mm / s, c) and wherein a polished workpiece surface (113) is produced which has a micro-roughness and waviness, wherein the white light interferometry at a spatial wavelength λ OMicroroughness measured in the range of 1 µm to 10 µm has a surface roughness Sa of less than 0.5 nm, characterized in that the measurement is taken by means of a white light interferometer at a spatial wavelength in the range λ O Surface roughness (waviness) measured from 100 µm to 1000 µm has a value Sa of more than 5 nm, where the quasi-line (87) has a radiation intensity within the quasi-line (87) on the workpiece (64) between 10 W / cm² 2 and 1000 W / cm² 2 is produced wherein, for laser polishing of an annular end face (80) of a hollow cylindrical workpiece (64), the feed movement comprises rotation of the end face (80) about the longitudinal axis (84), and the translational-oscillating movement comprises a reversing movement of the laser beam (81) between an inner workpiece surface (85) and an outer workpiece surface (86), and wherein the speed of the translational-oscillating movement is set higher in the region of the inner surface (85) than in the region of the outer surface (86).

The application discloses a laser modification polishing integrated method for improving thinning efficiency of silicon carbide wafers. First, the wafer is placed on an ultrasonic vibration platform; then laser slow scanning parameters are set to make the semiconductor wafer efficiently modified under the action of ultrasonic vibration; then an air flow device is started, laser polishing parameters are set, and the laser is polished on the surface of the modified wafer under the action of ultrasonic vibration and high-speed air flow; finally, the wafer after laser polishing is ground and thinned by a wafer thinning machine matched with a fine-grit diamond grinding wheel, so that the final finished product sample is obtained. The method has the advantages of simplicity, high efficiency, strong repeatability and the like, and in combination with an external field assisted laser modification polishing process, the thinning efficiency can be effectively improved and the wafer thinning cost can be reduced.

The invention relates to the technical field of oil pump rotors, in particular to a rotor dynamic balance measurement and automatic correction system and a technological process method.The system comprises a marble platform, the marble platform is provided with a rotor positioning unit, and an oil pump rotor is installed on the rotor positioning unit; the dynamic balance measuring unit is matched with the rotor positioning unit to measure the unbalance size and phase of the oil pump rotor; a size measuring unit is arranged on the laser material reducing unit, and laser material reducing machining and laser polishing treatment are carried out according to data measured by the dynamic balance measuring unit in cooperation with the rotor positioning unit; a negative pressure dust removal unit; and the workpiece cooling unit is used for cooling the subtractive machining part of the oil pump rotor. Dynamic balance detection, laser correction and machining area size measurement of the oil pump rotor can be achieved, full automation in the treatment process is achieved, the precision and efficiency of dynamic balance of the rotor are improved, and meanwhile the surface quality of the rotor workpiece after material reduction machining can be effectively controlled.

The embodiment of the specification provides a carbon nanotube laser polishing quality real-time monitoring system and method based on optical coherence tomography (OCT) and secondary ion mass spectrometer (SIMS), an electronic device and a medium, wherein the system comprises: an ultrafast laser polishing device for high-precision laser polishing of a carbon nanotube film according to laser parameters; an OCT optical monitoring system for real-time monitoring of the surface morphology of the carbon nanotube film in the polishing process of the ultrafast laser polishing device, to obtain OCT data; a SIMS chemical component analysis module for detecting the surface element composition and impurity content of the carbon nanotube film before and after polishing, to obtain SIMS data; an intelligent feedback control system for optimizing the laser parameters of the ultrafast laser polishing device based on the OCT data and the SIMS data by using a machine learning algorithm; and a data processing and storage module for storing and analyzing the OCT data and the SIMS data, generating a surface quality evaluation report, and remotely adjusting the laser parameters according to the feedback of the intelligent feedback control system.

This application discloses a laser polishing device and its control method. The laser polishing device includes: a main body containing a processing chamber; an air inlet on one side of the processing chamber; an air inlet pipe connected to the air inlet on one side and to an air source on the other side; an air outlet on the opposite side of the processing chamber; an air outlet pipe connected to the air outlet on one end and to an exhaust device on the other side; a first sensor module installed on the air outlet pipe for detecting the pressure and / or velocity of the airflow within the air outlet pipe; and determining whether a filter module enters a self-cleaning mode based on the information fed back from the first sensor module. This ensures that the cleanliness within the processing chamber meets processing requirements and improves processing efficiency.

The utility model relates to the technical field of laser polishing, in particular to a laser stripping tool which comprises a rotating ring, a plurality of sliding holes are formed in the top of the rotating ring, supporting plates are connected to the inner walls of the sliding holes in a sliding mode, a plurality of driving assemblies are installed at the bottom of the rotating ring, and second air cylinders are fixedly connected to the inner walls of the supporting plates. Limiting holes are formed in the two sides of the inner wall of the supporting plate, a supporting plate is fixedly connected to the output end of the second air cylinder, limiting blocks are fixedly connected to the two sides of the supporting plate, the limiting blocks are slidably connected with the inner walls of the limiting holes, adjusting assemblies are installed on the inner wall of the supporting plate, and a mounting groove is formed in the top of the supporting plate. And the inner wall of the mounting groove is rotationally connected with a rotating shaft. The driving assembly drives the clamping arms to move, the ends of the clamping arms clamp and fix the outer wall of a product, meanwhile, downward force is applied to the product, the bottom of the product can be firmly fixed to the top of the supporting table, and the stability of product installation is guaranteed.

A mobile processing chamber for laser polishing of glass workpieces comprises a workpiece carrier, a shielding element for the laser radiation used in the polishing process, and a protective enclosure. The shielding element is designed and positioned to surround a receiving area for the workpiece to be polished on the workpiece carrier, thus shielding the workpiece carrier from direct exposure to the laser radiation during the polishing process. The protective enclosure, either alone or in conjunction with the workpiece carrier, forms a closed chamber around the surface of the inserted workpiece to be polished and has a removable lid. The workpiece carrier, shielding element, and protective enclosure are made of materials that can withstand temperatures up to at least 500 °C. The material of the workpiece carrier is additionally selected to have a low thermal conductivity, preferably less than 10 W / (m K).The mobile processing chamber enables laser polishing of glass workpieces on an industrial scale with high yield.

The application provides a simulation prediction analysis method for laser polishing of a microtopography and roughness of a diamond surface, and comprises the following steps: creating a mapping relationship data table of laser parameters and laser spot size and power density; establishing a mapping relationship model diagram of laser spot power density, pulse width, laser incidence angle and diamond surface ablation pit depth; constructing an analysis model of a laser spot stacking state; generating a simulation image of the microtopography of the laser polished diamond surface; and predicting the roughness of the laser polished diamond surface. The application takes the machining parameters of laser spot power, pulse width, repetition frequency, defocusing amount, incidence angle, transverse scanning rate and longitudinal stepping interval as inputs, takes the microtopography and roughness of the laser polished diamond surface as outputs, and establishes a mapping relationship between the inputs and the outputs through simulation analysis of the size of the ablation pit, the spot scanning path and the spot stacking state, so as to guide the optimization of the laser polishing process parameters.

The present invention discloses a laser-jet electrochemical hybrid polishing method, which mainly utilizes laser irradiation combined with electrified spraying of electrolyte to process the surface of stainless steel, so as to solve the problems of low flexibility, limited shape and size, insufficient precision in jet electrochemical polishing, and easy oxidation and blackening of samples during laser polishing in traditional electrochemical polishing. The main creativity of the present invention is embodied in that the laser-jet electrochemical hybrid polishing has great flexibility, can perform selective polishing on large-sized and special-shaped workpieces in daily environment, effectively reduce the roughness of the workpiece surface and improve the surface reflectivity, and will not produce oxidation and morphological defects on the substrate surface.

The invention provides a three-step polishing method for suppressing high-frequency errors in CO2 laser polishing of a fused quartz element, and belongs to the technical field of laser processing of optical elements. The invention aims to solve the problem that the optical transmission performance and the laser damage resistance of a fused quartz element are severely influenced by medium-high frequency error induced far-field light modulation and high-frequency error induced near-field light field enhancement when the fused quartz element is processed by laser. The method comprises the first step of laser preheating, the second step of high-speed multi-layer polishing and the third step of low-speed single-layer polishing, laser polishing movement tracks and polishing parameters of the corresponding steps are drawn, medium-high frequency and high-frequency errors of the surface of the fused quartz element subjected to laser polishing are greatly reduced, the machined surface almost has no surface knife lines, and the surface quality is improved. And the far-field light modulation and near-field light field enhancement effects are effectively reduced.

The invention discloses olefinic magnetic heating equipment and belongs to the technical field of linen ironing in the washing and dyeing industry. The problems that an ironing groove in the existing linen ironing field needs various auxiliary facilities, and potential safety hazards of high temperature and high pressure exist are solved. An electromagnetic coil fixing frame of a first arc-shaped heating body is sequentially provided with an electromagnetic coil, a high-temperature-resistant insulating layer, a first fireproof heat insulation layer and a first high-temperature-resistant anticorrosive layer; the second arc-shaped heating body comprises a laser polishing surface layer, a nanometer insulating base layer, a second high-temperature-resistant anticorrosive layer, a first mica insulating layer, a graphene printing coating, a nanometer heat preservation layer and a second mica insulating layer which are sequentially arranged, and a power supply wiring pile is arranged on the second mica insulating layer and connected with the graphene printing coating. According to the olefinic magnetic heating equipment disclosed by the invention, heat energy is exerted to the maximum on the arc-shaped heating body in a short time, and the efficiency of ironing linen is improved.

The invention relates to the technical field of welding seam detection, in particular to a fillet welding seam inner surface grinding and detecting integrated device which comprises a circumferential rotating device, a position adjusting device, a laser grinding device and a phased array detecting device, and the position adjusting device is fixedly installed on the circumferential rotating device; the laser polishing device and the phased array detection device are installed on the two sides of the position adjusting device respectively, and the circumferential rotating device drives the position adjusting device and the laser polishing device and the phased array detection device installed on the position adjusting device to rotate in the circumferential direction. The position adjusting device drives the laser polishing device and the phased array detection device to move in the radial direction, and laser polishing is conducted on the inner surface of the fillet weld through the laser polishing device; and then the polished area is detected through the phased array detection device. The device has automation and high efficiency, high-precision grinding and nondestructive testing can be achieved, safety is improved, the detection process is optimized, and diversified requirements are met.

The invention discloses an on-site laser polishing metallographic detection method in a high-temperature environment, and aims to solve the problems of equipment damage, tissue distortion, low efficiency and the like in existing detection. The method comprises the following steps: fixing a detection device through a bracket, acquiring temperature and material parameters, calling an optimal combination parameter database to match polishing and oxidation time, carrying out precise laser focusing polishing and high-temperature natural oxidation, switching a microscope station to carry out metallographic detection, and transmitting an image to a mobile display end in real time. According to the method, in-situ nondestructive testing is achieved, the polishing precision is high, the high-temperature adaptability is high, parameters are automatically matched, the detection efficiency is greatly improved, and the method is suitable for state evaluation of key equipment under various high-temperature working conditions.

The present invention relates to the technical field of equipment processing, and specifically relates to a laser polishing device for oil tank welds. The polishing device includes a laser emitter, an adjustment mechanism, a side rust removal mechanism, and a bottom rust removal mechanism; the operator first places the laser emitter above the oil tank to polish the weld. After the polishing is completed, the laser emitter touches the adjustment mechanism, and the light path is refracted by the side rust removal mechanism to polish the side wall of the oil tank. After the side wall polishing is completed, the bottom is continuously polished through the bottom rust removal mechanism; the device has a simple structure, effectively realizes polishing of different positions of the oil tank through a simple mechanical structure, effectively reduces the investment in laser equipment, and at the same time avoids damage to other objects caused by bottom laser emission, has good practicability and economy, and is beneficial to the popularization and use of the equipment.

The invention belongs to the technical field of laser processing. According to the laser polishing device and method, a laser generator is used for generating pulse laser; the focusing and coupling unit is used for focusing and coupling the pulse laser, so that the laser is efficiently transmitted in the optical fiber; the homogenizing optical fiber is used for homogenizing and shaping the laser pulse to obtain a square flat-topped laser spot; the light spot shaping unit is used for controlling the size of the square flat top light spot, so that the laser is coupled into the galvanometer; and the scanning galvanometer is used for controlling the pulse laser and the diamond to move relatively, the distance between the light spots is the diameter of the light spots by controlling the laser scanning speed and the linear distance, and the diamond is scanned and polished on a preset scanning route. By controlling the laser scanning speed and the line spacing, the spacing between the light spots is the diameter of the light spots, so that diamond polishing with uniform energy and high efficiency is realized, and the processing time consumption is greatly reduced.

According to the grinding and polishing method for the wire-drawing hole of the wire-drawing die, the inner wall of the wire-drawing hole is axially and circumferentially scoured by particle liquid containing hard particles, and the surface of the inner wall of the wire-drawing hole is rubbed by the hard particles flowing along with liquid flow. Furthermore, the particle liquid forms a columnar jet flow passing through the wire drawing hole under the action of pressure, so that the outer peripheral surface of the columnar jet flow forms axial friction with the inner wall of the wire drawing hole when passing through the wire drawing hole, and meanwhile, the inner wall of the wire drawing hole rotates on the outer peripheral surface of the columnar jet flow, so that circumferential friction is formed between the outer peripheral surface of the columnar jet flow and the inner wall of the wire drawing hole. The device has the advantages that the inner wall surface of the wire drawing hole is smooth; compared with the prior art that a core rod is powerfully pulled, inserted and polished, the core rod cannot be broken to block a hole; compared with laser polishing in the prior art, the inner wall profile of the wiredrawing hole cannot be changed due to the problem of operation precision.

The utility model relates to the technical field of glass surface polishing, and particularly discloses an optical glass surface polishing device based on ultrafast laser, which comprises a dustproof shell, a control end is embedded in one side of the outer wall of the dustproof shell, and a laser polishing equipment main body is fixedly mounted at the top end of the dustproof shell. A grinding head is embedded in the end, penetrating into the dustproof shell, of the laser grinding equipment body, fixing plates are fixedly installed at the two ends of the dustproof shell, and an adjusting mechanism is arranged on one side of each fixing plate. According to the optical glass polishing machine, after optical glass is adsorbed and fixed through the vacuum chuck body embedded in the sliding table, the position can be adjusted in multiple axial directions after the optical glass enters the dustproof shell, the optical glass polishing machine is suitable for polishing different positions of the optical glass, and meanwhile large optical glass protoembryos can be carried for polishing treatment; the situation that the machining efficiency is low due to the fact that a plurality of pieces of optical glass meeting the size need to be cut and graded grinding is carried out is avoided, and the machining efficiency of the optical glass can be improved on factories or production lines.

A pressing tool has a support structure made of sheet steel. The pressing tool is formed by a press plate or endless belt and configured to press material panels in hot presses. The support structure of the pressing tool thereby has a coarse structure with a depth of at least 150 μm produced by at least one processing operation. At least a partial region of the coarse structure is rounded by laser polishing. The surface of the pressing tool has a fine structure produced by at least one processing operation. Further, a method manufactures the pressing tool and a method manufactures a material panel using the pressing tool.

The invention discloses a surface roughness and heat dissipation performance collaborative optimization method for a power supply heat dissipation shell, and relates to the technical field of heat management, and the method comprises the steps: constructing a roughness-heat dissipation efficiency response model, and building a heat dissipation performance function with a roughness value as a core variable and a flow rate, a heat source temperature and a loading pressure as correction parameters; defining a working condition adaptive roughness optimization interval; roughness-pressure coupling control of interface thermal resistance is carried out, and a gradient rough structure is adopted at the interface of a heat dissipation shell and a heat source; pre-tightening force is applied to enable the interface to be plastically deformed; based on real-time optimization execution of digital twinning, flow velocity is monitored through an embedded micro differential pressure sensor, and processing parameters are dynamically adjusted in combination with feedback of an infrared temperature array; and when it is detected that the ratio of the flow velocity to the critical flow velocity threshold value is smaller than a set threshold value, the laser polishing module is activated to reduce the roughness value to the lower limit value of the set interval. According to the method, the universality law of directivity reversal of the roughness effect is established, and the relation between the roughness and the heat dissipation performance is quantified.

The invention discloses a metal workpiece surface crack repairing method and device based on a continuous laser polishing technology, belongs to the technical field of metal repairing engineering, and realizes selective cladding and metallurgical bonding of a crack area and synchronous completion of crack filling and surface strengthening by accurately controlling laser energy density and heat input under the protection of inert gas. The core scheme comprises the following steps: 1) performing three-dimensional scanning positioning on cracks; 2) laser-powder synchronous coupling repair; and (3) gradient annealing is performed to control residual stress. Laser polishing parameters are determined according to the crack filling depth equation, the surface flatness is controlled in combination with a molten pool oscillation equation, and the stability of a molten pool formed by metal liquid after laser polishing of metal is evaluated and calculated. And after polishing, observing under an electron microscope, and monitoring whether the surface hardness after polishing reaches the standard or not through a hardness control model. And then, a thermal-mechanical coupling model is adopted to predict the magnitude of residual stress generated in the laser repairing process, and a theoretical basis is provided for gradient annealing process parameters.