143 results about "Laser coating" patented technology

A binary alloy coating seamless steel tube top and a manufacture method belong to the field of laser processing. Aiming at solving the easy peel-off of molybdenum alloy of a molybdenum alloy top, prolonging service life and reducing cost, the invention melts and coats nickel-base or cobalt-base alloy coating at the nose or working part of the top, melts and coats iron-base alloy coating at the straightening part and the parallel part to obtain a binary alloy coating seamless steel tube top; the preparation of the top has the following steps of manufacturing the top by adopting a casting manner, performing mechanical processing on the cast top and reserving melt thickness of 1.0-3.0mm on the external surface of the top for laser melt process; using nickel-base or cobalt-base alloy to perform laser melt on the top end of the nose part; performing laser melt on the lateral of the nose part as well as the working part with nickel-base or cobalt-base alloy as melt powder, finishing laser melt on the straightening part and the parallel part with iron-base alloy incessantly; performing strain-removal treatment, namely performing mechanical processing of top nose spiracle and finishing laser coating polishing and grinding.

A laser shaping method for preparing the metallic object used to repair tooth features that combination of 3D laser shaping technique with CAD and CAM to prepare said metallic object directly from metal powder includes generating a 3D CAD model of said object by computer, layering the model by a certain thickness to convert the 3D information to a series of 2D contour information, and laser coating to stacking metal powder by layer according to said contour information until the object is finished.

A step type variable speed scanning method for accuracy control of laser bend forming belongs to the technical field of plastic forming. A laser coating material is coated on the scanning area of a surface to be scanned, a sheet material to be detected is clamped on one side, the scanning speed of the scanning area is determined by the diagram method to generate the step type variable speed scanning scheme corresponding to the scanning area, and finally the sheet material to be detected is scanned and processed according to the step type variable speed scanning scheme in a laser numerical control manner. The measure and check after processing are performed after the sheet material is cooled naturally. The method of the invention can effectively reduce the phenomenon of border effect, enhance the forming accuracy of the sheet material, thereby realizing the different energy output of the different heating area to balance the geometric constraint of the sheet material and improve the border effect.

The invention discloses a UV (Ultraviolet)-compound laser coating composition which is a 100% UV containing coating. The composition comprises the following components in parts by weight: 10-60 parts of a light-cured resin, 35-75 parts of a photopolymerization monomer, 2-8 parts of a photoinitiator and 0-3 parts of an assistant. According to the UV-compound laser coating composition disclosed by the invention, a holographic laser effect is obtained by using mould pressing and a UV illuminating and curing process. As the mould pressing and the UV illuminating and curing process are adopted at the same time, the UV-compound laser coating composition not only can be used for obtaining the laser effect of a common shallow groove, but also can be used for making a laser pattern of a deeper groove. Compared with the prior art, the composition disclosed by the invention further has the advantages that by adopting the 100% UV containing formula which contains fewer solvents or no solvents, during use, less solvents volatilize, so that air pollution is reduced; by adopting UV curing, the energy resources are saved and the speed is fast, and the production efficiency is improved; the temperature is low during UV curing, and the influence on the base material in temperature distortion is reduced.

The invention discloses a system for treating a laser coating. The system comprises a first pulse laser (1), a second pulse laser (2), a first attenuator (3), a second attenuator (4), a first electronic shutter (5), a second electronic shutter (6), a first beam expanding lens (7), a second beam expanding lens (8), a reflector (9), a beam combiner (10), a CCD (Charge Coupled Device) real-time observation system (11), an optical galvanometer (12), a focus objective lens (13), a reflector (14), a pending sample substrate (15), an electrolytic cell (16), a three-dimensional mobile station (17) and a delay controller (18). According to the invention, a laser heat effect is fully absorbed by a material through utilizing pulse matched with the absorptive character of the material to be treated, and a laser beam of the wavelength, so that an ideal coating treatment result is obtained. The system, provided by the invention, is used for a treating process including laser electroplating, laser chemical plating, laser etching and micro laser cladding.

The invention discloses an intelligent laser remanufacturing method and system. The intelligent laser remanufacturing method comprises the steps that a point cloud data model of a part to be repairedis obtained, and the point cloud data model is compared with a standard CAD model of the part to be repaired to distinguish an area to be repaired; a coating path is automatically generated through apath autonomous planning module, and initial process parameters are determined by using an intelligent algorithm based on a process parameter database; the defocusing amount is automatically adjusted,and an initial machining position is determined; and combined with a visual algorithm, the process parameters are adjusted in real time by monitoring the change of the shape and temperature of a molten pool, and the closed-loop feedback control of the laser cladding process is realized. The intelligent laser remanufacturing method and system have the characteristics of automation and intelligence, are suitable for the surface repair of medium and large structural parts, can reduce an operation threshold of a laser remanufacturing industry, and improve the machining quality of laser coating.

A method for restoring the inner bore of a gear coupling is disclosed. Dimensions of all parts of the gear coupling are measured to check whether all the dimensions satisfy laser coating restoration standards, the surface fatigue layer of the inner bore of the gear coupling is removed, Ni55 and nanometer WC powder which are prepared in proportion are fully mixed in a mechanical powder mixer through adopting a mechanical mixing method, the Ni55 and the nanometer WC powder are coated on the surface of the inner bore of the gear coupling through adopting a coaxial powder sending method and through scanning by adopting a large-power CO2 laser, and the gear coupling undergoes heat treatment and then is slowly cooled with a furnace; and the inner bore of the cooled gear coupling is machined to obtain the gear coupling with the dimensions and the surface process which satisfy requirements, the gear coupling undergoes processing precision detection, and finally the gear coupling is packaged. Compared with the prior art, the method disclosed in the invention has the advantages of continuous use, better performances and long service life of the gear coupling, simple technology, strong controllability, less energy consumption and the like.

The invention discloses a preparation method of nano-diamond friction coat by laser coating. The preparation method comprises the steps as follows: 5%-20% of nano-diamond powder is added into alloy powder, the mixed powder is then put into alcohol and mixed by ultrasonic vibration, wherein, the ultrasound frequency is 28/40 kHz, the mixing time is 10 minutes, and the alcohol is vaporized; the work piece to be coated is firstly placed in a vacuum chamber and the mixed powder obtained in last step is then pre-placed on surface of the work piece to be coated by powder laying or automatic powder feeding; solid YAG pulsed laser is used to coat in the vacuum chamber by direct entering or transiting and optical fibre guiding; the laser coating power is 150W-400W, the pulse frequency is 10-30Hz, the pulse width is 3-8ms, and the vacuum degree in the vacuum chamber is not lower than 1*10Pa. The nano-diamond friction coat prepared by the method of the invention has high coating strength, compact organizational structure and excellent bonding performance with a matrix.

The invention discloses a high-coercivity sintered R-T-B permanent magnet material and a manufacturing method therefor. The manufacturing method comprises the following steps of A, preparing spherical powder comprising heavy rare earth elements; and B, coating an R-T-B series permanent magnet material manufactured by a normal process with the spherical powder comprising heavy rare earth elements in a laser coating mechanism. By virtue of the manufacturing method for the high-coercivity R-T-B series permanent magnet material provided by the invention, the magnet coercivity can be remarkably improved without influencing remanence, and meanwhile, the usage amount of the heavy rare earth elements is obviously lowered.

The invention provides a continuous rapid laser coating method of a superconducting layer in a second-generation high-temperature superconducting strip. According to the invention, through a method of bi-dimensionally scanning a superconducting target along an x-y axle, the whole surface of the target can be utilized and a laser evaporation coating process can be stably and sustainably carried out; coating intervals are increased through a method of scanning along the motion direction of the strip by use of laser spots; and the width of the coating interval vertical to the motion direction of the strip is increased through a method of twining the strip on a belt roller above a heater multiple times. By using the method provided by the invention, evaporated substances are fully collected on a metal base band to the greatest extend, thereby effectively improving the preparation speed of the strip, increasing the utilization rates of the target and the evaporated substances, greatly improving the production efficiency and reducing the production cost of the strip. According to the method provided by the invention, the rapid coating of the second-generation high-temperature superconducting strip suitable for large-scale industrial production can be realized.

The invention discloses a method for preparing a reignition turbine first-stage work bladetip wear-resistant coating, which comprises the following steps of: (1) scanning the edge of the end face of the bladetip by using an infrared scanning device of laser coating equipment to enable a scanning track program control program to record the position of a scanned point; and (2) starting a laser generator of the laser coating equipment, transferring alloy powder to the end face of the bladetip under the protection of inert gases, and melting the alloy powder with laser beams. The matrix material of the reignition turbine first-stage work blade is a nickel-based cast high-temperature alloy K488 and the alloy powder is Co-based self-fusing alloy powder. The method for preparing the coating improves the high-temperature wear resistance of the coating, also improves automatic control level and production efficiency of the coating preparation and guarantees the stability of the quality of the product.

In one aspect, a braking system is provided that comprises a part (e.g., a brake disc) with a surface that includes a metal coating applied using a cold spray laser coating. Vehicles also are provided having a part (e.g., a vehicle brake disc) with a surface that includes a metal coating that may be applied using a cold spray laser coating is provided. The part (e.g., a brake disc) has improved properties such improved resistance wear and corrosion. A metal coating may also, e.g., serve as a wear indicator for the coated part.

The invention discloses a multichannel pulsed laser deposition method for preparing a YSZ buffer layer, which comprises the following steps of: arranging a nickel-tungsten metal base band, a Hastelloy band, a stainless steel band or other metal base bands in a deposition cavity, winding on a band roller of a metal band transmission device of multichannel pulsed laser deposition equipment for multiple times, and raising the temperature of a heater to deposition temperature; opening an oxygen channel; starting a YSZ target manipulator and beginning the x-direction and y-direction scanning and rotation of a YSZ laser evaporation target platform; opening an optical path window of a laser, and beginning pre-evaporating the YSZ target platform; beginning depositing; and making the metal base band pass through the heater for multiple times due to multiple winding of a roll shaft of the transmission device, and finally stopping corresponding equipment. The YSZ buffer layer is prepared by the multichannel pulsed laser deposition method, so that a defect of a small deposition area of a unichannel pulsed laser deposition method is overcome, the deposition speed is greatly improved, various advantages of the pulsed laser deposition method are exerted fully, and the prepared YSZ buffer layer has single orientation, high surface quality and high crystallinity.

The invention provides a selective chemical plating process. A laser coating is coated on the external surface of a plastic workpiece, and a step of doping a catalyst into plastic matrix resin is eliminated, so that cost is reduced, the application range is broadened, and the defects of low selectivity and the like caused by non-uniform mixing of the catalyst and the resin are overcome. A plurality of laser coatings suitable for the selective chemical plating process can meet the requirement of chemical plating in processes such as a laser direct line molding technology and the like, tolerate a high temperature and a strong acidic/alkaline environment, and can meet the requirement of reflow soldering to manufacture a product suitable for a surface mount technology (SMT) process; and a preparation method is convenient and quick, and easy to operate.

The invention relates to a method suitable for continuously preparing a high-temperature superconductive belt material, which comprises the steps of: firstly, preparing a metal baseband; secondly, growing a compound separating layer on the metal baseband; then, growing a superconductive layer on the compound separating layer; and finally, growing a protecting layer on the superconductive layer. According to the invention, the in-situ preparation of the compound separating layer and the superconductive layer can be finished in the same coating system by adopting a multi-target multi-channel laser coating method; laser utilization rate and preparation speed of the belt material are greatly enhanced; vacuumizing time is reduced; equipment utilization rate is enhanced; and investment intensity of fixed assets is reduced so that the manufacturing cost of the high-temperature superconductive belt material is greatly reduced.

The invention discloses a laser medical film and a preparation method thereof. The PET medical film is prepared directed to the laser printing demand, the film base is prepared from high temperature resistant PET plastics and is subjected to corona treatment, an anti-static layer is coated on one side of the film base and is prepared from polystyrene sulfonate, a laser ink absorption coating is coated on the other side of the film base, and the laser coating contains a nanoscale aluminum oxide powder dispersion liquid. The laser medical film provided by the invention has the advantages of fast printing speed, good imaging effect, high temperature resistance, good antistatic effect, smooth paper feeding, no jamming, applicability to doctor handwriting signing, difficult color fading, and long preservation period.

The invention discloses a simplified baffle layer suitable for IBAD-MgO (ion beam assisted deposition-magnesium oxide) growth on a metal substrate and a preparation method thereof. The simplified baffle layer is arranged on the metal substrate and is a single YAlO baffle layer; and the single YAlO baffle layer is prepared by adopting a multi-channel pulse laser coating technology or a multi-channel magnetron sputtering technology. The YAlO baffle layer with a smooth surface, even surface particle size, low roughness and strong bonding strength is prepared; the YAlO baffle layer can prevent atoms of the metal substrate from diffusing to the other layers, can reduce the roughness of the metal substrate and also can be used as a nucleation layer of an IBAD-MgO layer; the surface roughness of the YAlO baffle layer is smaller than 2 nanometers; the texture degree in the surface of the prepared IBAD-MgO layer is less than 7 degrees; and a rare earth oxide superconducting layer with high performance can epitaxially grow on the baffle layer. By adopting the simplified baffle layer, the quantity of the baffle layers for IBAD-MgO is reduced; simplification, fast speed and low cost of the manufacturing technology are achieved; the simplified baffle layer has high stability, repeatability and reliability, and good application prospect in industry, and is suitable for industrial production.

The invention discloses a method for laser imprinting transfer on wrapping paper. The main techniques of the method comprise the following steps: A. UV oil is pre-coated on the paper by a screen printing method; namely in printing, the UV oil is poured into one end of a screen printing plate, a scraper blade exerts certain pressure in the UV oil position on the screen printing plate, and at the same time the UV oil moves to the other end of the screen printing plate; the UV oil is extruded on the paper by the scraper blade from parts of oil penetrating meshes in moving; B. the coating surface of a laser film is touched with the UV oil surface on the paper, and the UV oil is stuck to the surface of the laser film with the laser coating; C. the irradiation of a UV light solidifies the UV oil; D. the laser film is stripped; and E. the dried UV oil of the laser coating on the laser film completes laser transfer on the paper. In order to overcome the defects of bad coating quality, insufficient overprinting precision and limited coating amount of the existing method for laser imprinting transfer, the invention provides the method for laser imprinting transfer with thick UV oil layer and high precision.

An autoamtic controller for laser coating and powder-feeding system is composed of measuring pipe communicated with power-delivering pipeline, sensor, and data acquiring and processing system connected with the control motor of powder feeder and composed of amplifier, A/D converter and data processor. It can perform real-time monitor and regulation of feeded powder.

The invention is a method for repairing parts by laser directional solidification technology. In order to overcome the deficiency in the prior art that the columnar crystal or single crystal structure in the repaired area is consistent with the original part structure, the present invention slices and processes the three-dimensional information of the part to be repaired into a series of two-dimensional plane data information, The CNC machine tool scans according to the scanning trajectory determined by the two-dimensional plane data. The laser beam forms a laser molten pool in the repair area of ​​the part. Covering and stacking layer by layer, so as to realize the repair of parts by using epitaxial laser metal forming method. By adopting the technical solution of the present invention, a directionally solidified columnar crystal or single crystal repair layer can be obtained in the repair area, which is epitaxially grown from the original part tissue, which ensures the integrity and orientation consistency of the repair layer and the matrix grains, and has good applicability .

The invention discloses waterborne polyurethane emulsion for a composite laser coating. The waterborne polyurethane emulsion is prepared by the following steps: performing vacuum dehydration on macromolecular polyhydric alcohol at the temperature of 120-130 DEG C for 1-1.5 hours, reducing the temperature to be 50-60 DEG C, adding diisocyanate and epoxy resin, raising the temperature to be 75-85 DEG C, and reacting for 2.5-3 hours; adding a hydrophilic chain extender and reacting for 1-2 hours; adding an alcohol chain extender and reacting for 2-3 hours, and adding acetone to reduce the viscosity during the period; adding a neutralizer, and carrying out a neutralization reaction at the temperature of 40-50 DEG C for 0.5-1 hour to obtain a neutralization product; adding the neutralization product into water in which an amine chain extender is dissolved, carrying out shearing emulsification at 30-40 DEG C for 0.5-2 hours while controlling the stirring speed to be 2000-4000rpm to obtain primary emulsion, and evaporating to remove acetone under reduced pressure to obtain the emulsion. The emulsion is a self-emulsified system and does not contain small molecular emulsifier, and an emulsifier migration phenomenon is avoided; the waterborne polyurethane emulsion is high in adhesive force with a base material, and interlayer separation is avoided; moreover, the waterborne polyurethane emulsion has high solvent resistance and paint film printability.