34results about How to "Avoid surface defects" patented technology

The invention relates to a continuous casting and rolling rapid processing technology of a medicine foil. The process comprises the steps of raw material preparation, smelting and refining, continuous casting, cooling treatment, heating and rough rolling, finish rolling, annealing treatment, surface treatment, slitting and the like. By controlling the smelting temperature, the casting speed, the rolling speed, the roller surface roughness, the annealing parameters and other process conditions, efficient production of the aluminum foil is achieved, and the surface smoothness, the thickness precision, the tensile strength and the ductility of the medicine foil are guaranteed. The thickness of the finished medicine foil is 0.02-0.04 mm, the tensile strength is 80-120 MPa, the ductility is not lower than 1.5%, and the surface roughness Ra value is controlled to be 0.1-0.3 micron. The process can produce high-quality medicine foil meeting the medicine packaging requirement, has the advantages of being efficient, stable, energy-saving and environment-friendly, and is suitable for large-scale industrial production.

The invention provides a film coating tool and method for film coating operation of a large-size micro-channel plate. The film coating tool comprises a film coating base and a three-jaw gland rotationally matched with the film coating base. The coating base is in a horn mouth shape and is provided with a circular groove, a first conical boss and three U-shaped grooves formed in the outer side of the first conical boss. The three-jaw gland is in a horn mouth shape and is provided with a circular convex groove, a second conical boss and a positioning pin matched with the U-shaped groove. And the positioning pins can be operated to be embedded into the corresponding U-shaped grooves and are rotated and locked, so that the coating base, the micro-channel plate and the three-jaw gland are locked and assembled into the integrated coating clamp for subsequent coating treatment of the micro-channel plate. The tool and the method are suitable for preparation of the large-size microchannel plate with the high surface quality requirement, the tedious operation that a clamp is manually inverted to turn over is not needed in the microchannel plate coating process, surface defects caused by people are effectively avoided, and the production efficiency is improved while the surface quality of the microchannel plate is improved.

The invention relates to the technical field of automobile charging pile paint spraying, and discloses surface paint spraying equipment adaptive to automobile charging pile protection, the surface paint spraying equipment comprises a mounting bottom plate serving as a supporting carrier of the whole equipment, one side of the top end of the mounting bottom plate is fixedly connected with a storage cylinder, and universal wheels are mounted at four corners of the bottom end of the mounting bottom plate; a pushing handle is fixedly connected to one side of the mounting bottom plate; the reciprocating paint spraying assembly is mounted on one side of the top end of the mounting bottom plate and used for spraying paint on the outer surface of the automobile charging pile; and the quantifying assembly is installed on the outer side of the reciprocating paint spraying assembly and used for configuring and accurately controlling the amount of sprayed paint so as to achieve quantitative spraying. By additionally arranging the quantitative assembly, the amount of the sprayed paint can be accurately controlled, quantitative spraying is achieved, the consistency of the coating of each sprayed part is ensured through accurate paint amount control, and surface defects caused by uneven spraying amount are avoided.

The invention relates to the technical field of scum cleaning, in particular to a QPQ salt bath scum cleaning device and method. The device comprises an extraction pipe, an extraction pipe head, a locking cover, an extraction rod and an extraction rod head matched with the inner diameter of the extraction pipe head, the drawing pipe is in a thin cylinder shape and is opened at two ends; the drawing pipe head is in a conical barrel shape, openings are formed in the two ends of the drawing pipe head, and the large end of the drawing pipe head is connected with the first end of the drawing pipe. A through hole is formed in the center of the locking cover, and the locking cover is connected with the second end of the drawing pipe; the drawing rod is in a long rod shape, the diameter of the drawing rod is smaller than the inner diameter of the drawing pipe, the diameter of the drawing rod is in clearance fit with the inner diameter of the through hole, and the first end of the drawing rod penetrates through the through hole and is arranged in the drawing pipe in the axial direction of the drawing pipe; the drawing rod head is arranged in the drawing pipe, and the drawing pipe head is connected with the first end of the drawing pipe. According to the device, fine particle scum precipitated in salt bath liquid is effectively sucked into the suction pipe, and the cleaning efficiency is remarkably improved.

The present application relates to the technical field of polymer material recycling, and particularly relates to a battery PP diaphragm recycling and reprocessing device and a preparation method, which comprises a shell, an extrusion screw rod is installed in the shell, and a power assembly is connected to the end of the extrusion screw rod; a feeding hopper is installed on the shell and is close to one side of the power assembly; an air inlet assembly is installed on the lower side of the shell and is communicated with the inside of the shell, and an air outlet hole is arranged on the upper side of the shell; a heating assembly is sleeved on the outside of the shell; a discharging assembly is installed on the end of the shell and is arranged opposite to the power assembly, and a filter screen assembly is installed in the discharging assembly; and a detection assembly is installed on the shell and is used for detecting the temperature and pressure of the material in the shell.

The utility model provides a bearing ring processing device, which relates to the bearing ring processing field, and comprises a housing, an adjusting plate and a shielding cover, the housing is internally provided with a bidirectional threaded rod, the two sides of the housing are provided with two groups of adjusting turntables, the outer side of the bidirectional threaded rod is provided with a threaded sleeve, the top of the threaded sleeve is provided with the adjusting plate, and the adjusting plate is provided with the shielding cover. A protective rubber wheel is arranged on the inner side of the top of the adjusting plate, a shielding cover is arranged on the outer side of the top of the adjusting plate, a compression spring is arranged on one side of the inner side of the shielding cover, and an extension plate is arranged at one end of the compression spring. Sparks or chippings generated in the polishing process are prevented from splashing everywhere, operators or the surrounding environment is prevented from being hurt, cleanliness of an external area is guaranteed, the phenomenon of environmental pollution is reduced, meanwhile, external impurities can be prevented from entering a machining area in the machining process, cleanliness of the surface of a machined part is guaranteed, and the machining efficiency is improved. Therefore, the quality of processed products is improved.

The present application relates to the technical field of aluminum strip electroplating, and particularly relates to a continuous extrusion and electroplating integrated preparation method for aluminum strip. The present application is characterized by the following aspects: a full-process continuous process design is adopted, including continuous extrusion, continuous electroplating pretreatment, continuous electroplating of composite coating, and continuous post-plating treatment; a differentiated process connection scheme is set for 1 series and 6 series aluminum alloy substrates; a nickel functional layer deposition thickness quantitative regulation and control model is adopted, in which a turbulence correction coefficient is introduced; and a copper-nickel composite coating structure, segmented current density control, plating solution temperature matching concentration matching regulation and control technology are adopted. The present application realizes integrated continuous production of aluminum strip forming and surface modification, greatly improves the adhesion, thickness uniformity and corrosion resistance of the coating, and balances the production efficiency and product performance, and can be widely applied to the preparation of conductive aluminum strips in high-end fields such as new energy vehicles.

According to the field effect transistor based on component and gate voltage combined regulation and control and the preparation method thereof, a silicon dioxide layer is arranged on an intrinsic low-resistance silicon substrate, a source metal electrode and a drain metal electrode are arranged on the silicon dioxide layer, the source metal electrode and the drain metal electrode are metal composite electrodes and comprise a chromium electrode and a gold electrode, the bottom layer filled with channels of the source electrode and the drain electrode is a bismuth-selenium-oxygen nanosheet, and the bottom layer filled with the bismuth-selenium-oxygen nanosheet is a bismuth-selenium-oxygen nanosheet. A black arsenic-phosphorus nanosheet and a top gate bismuth-selenium-oxygen nanosheet dielectric layer are arranged on the bismuth-selenium-oxygen nanosheet, and the source electrode, the drain electrode and the gate electrode are connected with corresponding lead electrodes and are used for being connected with an external test circuit. According to the field effect transistor based on combined regulation and control of the components and the gate voltage and the preparation method of the field effect transistor, through packaging of the bismuth-selenium-oxygen nanosheets, the components of black arsenic and phosphorus and the gate voltage of the top gate are adjusted, so that the photoelectric performance of the device in the visible light, near-infrared and medium-wave infrared ranges is optimized.

The invention discloses an environment-friendly high-performance titanium alloy polishing composition as well as a preparation method and application thereof, and relates to the technical field of metal material surface treatment. According to the environment-friendly high-performance titanium alloy polishing composition, the pH value of a basic system is adjusted to 9.5-10.0 through a pH adjusting agent; the base system comprises the following components in percentage by mass: 10-30% of silica sol, 3-4% of an anti-gel stabilizer (urea or methylurea), 2-3% of a heat transfer improvement and surface defect inhibitor (ethylene glycol or propylene glycol), 0.1-0.2% of a wetting leveling agent, 1-2% of an alcohol amine complexing agent and 0.5-1% of an aminopolycarboxylic acid chelating agent besides water. According to the environment-friendly high-performance titanium alloy polishing composition, on the premise that an oxidizing agent is completely abandoned, perfect balance of high stability, high polishing rate and excellent surface quality is achieved through unique formula design, and the environment-friendly high-performance titanium alloy polishing composition has the advantages of being environmentally friendly and high in safety.

The present application relates to the field of metal processing cooling liquid, especially to a special drawing cooling liquid for aluminum pop can production and a preparation method thereof.The special drawing cooling liquid for aluminum pop can production comprises, in mass percentage, 5-25% of carbon material reinforcing liquid, 5-15% of surfactant, 5-15% of functional additive, 1-5% of antibacterial agent, 5-10% of complexing agent, 1-5% of oil control agent, 0.1-5% of pH regulator, 0.01-0.1% of defoaming agent, and the rest of deionized water.The processing cooling liquid provided in the present application can be used as a special drawing cooling liquid for the drawing and thinning process of aluminum pop can, and can play excellent drawing cooling, lubrication and rust prevention functions simultaneously.

The invention relates to a float glass flow channel waste discharge device which comprises a main cover plate arranged on the upper portion of a flow channel and further comprises an auxiliary cover plate, a first telescopic rod, a plurality of adjusting plates, a sucking pump, a controller, a plurality of thermocouples and an adjusting assembly, the auxiliary cover plate is arranged on the top of the main cover plate, and a closed cavity is formed between the main cover plate and the auxiliary cover plate; a plurality of strip-shaped exhaust holes are formed in the main cover plate and the auxiliary cover plate in parallel and correspond to each other up and down; the length direction of the exhaust holes is parallel to the flowing direction in the flow channel; the adjusting plates are of a right triangle structure and correspond to the exhaust holes in a one-to-one mode, the adjusting plates are attached to the top face of the main cover plate and arranged on one sides of the exhaust holes in a sliding mode, and the right-angle long sides of the adjusting plates are parallel to the extending direction of the exhaust holes. Overall coarse adjustment of the exhaust flow in the length direction of the runner is achieved, and the differential requirements of a high-waste-gas and high-temperature area at the melting furnace end and a low-working-condition area at the tin bath end are accurately met.

The invention provides an integrated femtosecond laser induced graphene oxide coating surface periodic structure method based on a BiBurst mode, which comprises the steps of forming a graphene oxide coating, introducing a GHz frequency pulse string, further forming a laser induced periodic surface structure and the like, and belongs to the technical field of laser application. According to the invention, micro-nano structures with different periods and shapes can be flexibly realized so as to meet the requirements of different applications; the materials and the process used in the invention have advantages in environmental friendliness, can reduce the use of harmful substances, and meet the requirements of modern sustainable development.

The invention discloses an ultrathin heat-resistant polyester film and a preparation method thereof, raw materials comprise a polyester matrix, an antioxidant, a lubricant and the like, the polyester matrix is formed by compounding PET, PEN, polyester liquid crystals and hydroxyl-terminated hyperbranched polyester, and a nanofiller is an aluminum oxide, zirconium oxide and boron nitride compounded system and is matched with calix [4] pyrrole, polyhedral oligomeric silsesquioxane and other components. The preparation method comprises the steps of mixing, twin-screw extrusion and filtration, die head extrusion and cooling, two-way stretching, corona treatment and rolling, and extrusion, stretching and shaping process parameters are controlled. The thickness of the thin film is 5-8 microns, the thin film has excellent tensile strength, low thermal shrinkage rate and high-low temperature cycle resistance, the synergistic effect of the components is remarkable, and the thin film is suitable for high-end ultrathin heat-resistant scenes.

The invention discloses a method and a system for leveling a coil steel metal plate for frame production. The method comprises the following steps: acquiring initial stress distribution data and thickness deviation data of the coil steel metal plate; on the basis of the initial stress distribution data and the thickness deviation data, personalized leveling process parameters are generated by adopting a finite element analysis model; a plurality of leveling roller sets of the leveling system are controlled according to the personalized leveling process parameters to conduct graded pressurizing and leveling, and meanwhile surface flatness data of the metal plate are collected in real time through a laser displacement sensor; and the flatness data collected in real time is compared with a preset standard, and the pressure, the rotating speed and the interval parameters of the leveling roller set are dynamically adjusted. According to the method, personalized technological parameter generation and dynamic closed-loop control are combined, the problems that a traditional leveling method is poor in adaptability to coil steel metal plates in different states, low in leveling precision and prone to secondary stress damage are solved, the leveling efficiency and the finished product quality are remarkably improved, and the rejection rate of follow-up machining of a vehicle frame is reduced.

The invention discloses a continuous winding drum type drawing device, and relates to the technical field of copper wire drawing devices, the continuous winding drum type drawing device comprises a rack, the top of the rack is sequentially provided with a pay-off assembly, a multi-mold drawing assembly and a limiting assembly from left to right, and the pay-off assembly, the multi-mold drawing assembly and the limiting assembly are all installed on the upper surface of the rack through bolts; the multi-winding-drum drawing mechanism and the winding device are arranged on the upper surface of the rack; by arranging the adjustable wrap angle guide assembly, a driving motor drives a screw rod to rotate, so that a movable sliding block moves along the screw rod, the relative position between a first guide wheel and a second guide wheel is changed, a wrap angle formed by winding a copper wire around the two guide wheels is changed, and the contact length and friction force between a wire rod and the guide wheels are adjusted accordingly; therefore, accurate control over tension in the drawing process is achieved, and the problem of wire breakage or quality fluctuation caused by too large or too small tension is solved.

Disclosed in the present invention is a wafer position detection device. The wafer position detection device comprises a mounting seat, a trigger assembly and a fluid pressure measurement assembly. The trigger assembly arranged on the mounting seat comprises a top cover that protrudes out of a surface of the mounting seat and is used for supporting a wafer, and a fluid conveying pipeline arranged in a hollow cavity formed by an inner wall of the top cover, wherein when a wafer is arranged on the top cover, the top cover can move close to the fluid conveying pipeline to block a fluid conveying port of the fluid conveying pipeline; and when no wafer is arranged on the top cover, the top cover can move away from the fluid conveying pipeline under the action of a fluid pressure to be in communication with the fluid conveying port of the fluid conveying pipeline. The fluid pressure measurement assembly is in indirect contact with a wafer by means of the top cover, so as to indirectly detect the in-place condition of the wafer, and therefore, the problem of the influence on the yield caused by defects generated on the surface of a wafer due to direct contact is prevented. Compared with an optical sensor, the wafer position detection device can realize in-place detection of a wafer which is sensitive to illumination, and has a wide application range, and the universality of the device is improved.

The utility model discloses a decorative surface cover which comprises a decorative sheet body and a buckle integrally formed on the back face of the decorative sheet body in an injection molding mode, the decorative sheet body is provided with a through hole for a steam valve to penetrate through, the buckle is arranged on the periphery of the through hole, the buckle comprises a main body and a clamping hook, one end of the main body is connected with the decorative sheet body, and the other end of the main body is connected with the clamping hook. The main body is provided with a first side face facing the through hole and a second side face deviating from the through hole, the clamping hook is arranged at the other end of the main body and arranged on the second side face in a protruding mode, and the thickness A of the main body is smaller than or equal to the thickness B of the decorative sheet body. By optimizing the buckle structure, flow lines can be prevented from appearing at the position, corresponding to the buckle, of the front face of the decorative face cover, and the appearance of the front face of the decorative face cover is guaranteed. In addition, the utility model further discloses a pot cover of the cooking utensil, which comprises a surface cover body, the decorative surface cover and a steam valve. The cooking utensil comprises a pot body and the pot cover, and the pot cover is adopted as the pot cover.

The invention provides a motorcycle brake pad die-casting forming system, and belongs to the technical field of motorcycle accessory production, the motorcycle brake pad die-casting forming system comprises a die-casting mechanism and a cooling mechanism, the die-casting mechanism comprises a machining table, a fixing frame is fixedly mounted at the top end of the machining table, and a fixing plate is fixedly mounted on the left side wall in the fixing frame; a forming plate is attached to the right side wall of the fixing plate, a moving plate is arranged over the forming plate, a single-stroke air cylinder and a double-stroke air cylinder are arranged at the top end and the left end of the moving plate correspondingly, a die-casting machine is fixedly installed on the right side of the top end of the machining table, and a sealing plate is fixedly installed at the output end of the die-casting machine. The problems that cooling is uneven and production efficiency is low in the motorcycle brake pad die-casting forming process are solved, the efficient and even cooling process is achieved by optimizing a cooling system and a circulation process, and therefore the product quality and the production efficiency are improved.

The utility model discloses a storage rack for plastic product production, which relates to the technical field of plastic product storage equipment and comprises a mounting rack, universal wheels arranged at the bottom of the mounting rack through a support, a placement rack arranged in the mounting rack through a rotating shaft, a mounting shell arranged at the top of the mounting rack, and a mounting shaft rotationally arranged in the mounting shell. A first bevel gear is arranged on the mounting shaft through key connection, a second bevel gear is arranged on the rotating shaft and located in the mounting shell through key connection, the second bevel gear is meshed with the first bevel gear, and a plurality of cooling devices are further evenly arranged on the inner wall of the mounting frame. By means of a cooling system composed of the built-in fan and the refrigerating device, under the action of the rotating shaft and the placing frame, plastic products can be driven to rotate, cold air can be forced to convect, the storage space can be evenly covered, deformation or surface defects caused by local overheating of the plastic products are effectively avoided, the cooling and shaping time is shortened, and the production efficiency is improved. The production efficiency is improved.

The invention belongs to the technical field of preparation of high-temperature alloy cold-rolled sheets, and particularly relates to a preparation method of an Alloy 90 high-temperature alloy cold-rolled sheet, which comprises the steps of vacuum induction melting, air consumable melting, forging, hot rolling and cold rolling. According to the method, an element material with the purity larger than or equal to 99.95% is used, vacuum induction melting is carried out under high vacuum in the whole process, a high-purity alloy ingot is obtained, after the surface is turned by at least 20 mm, vacuum consumable melting is carried out under high vacuum and low current voltage, then the surface is turned by at least 30 mm, forging is carried out, high-temperature heating and small deformation are required for forging, and it is guaranteed that a forging stock with the surface free of cracks is obtained; and surface polishing is not needed, hot rolling is directly conducted, and the yield can be increased by 3%-5%. Hot rolling follows the high-temperature small deformation principle, it is ensured that a hot-rolled blank without cracks on the surface is obtained, cold rolling follows the large deformation principle, the number of times of the rolling process is reduced, the cost is reduced, the yield is increased, and finally a high-quality Alloy 90 high-temperature alloy cold-rolled sheet finished product is obtained.

The application discloses a kind of heterojunction photoelectric detectors and preparation method thereof.The detector includes: substrate;Semiconductor epitaxial structure, at least including channel layer being arranged on the substrate and being located on the barrier layer of channel layer;Wherein, the thickness and component of the barrier layer are configured so that no two-dimensional electron gas is generated at the heterojunction interface between the channel layer and the barrier layer;First electrode and second electrode, set in the semiconductor epitaxial structure and electrically connected with the two-dimensional electron gas, constitute the electrical input end and output end of the heterojunction photoelectric detector.By configuring the thickness and component of the barrier layer so that no two-dimensional electron gas is generated in the channel, the damage of etching process to the channel is avoided, and the ultraviolet detector with extremely low dark current, high photocurrent density and no need to rely on etching process to deplete the channel is realized.

The utility model relates to the technical field of high polymer material crosslinking process, and provides an ultraviolet irradiation crosslinking device for a cable insulation layer, which comprises a plastic extruding machine head used for wrapping an insulation material outside a conductor to form an insulation wire core; the ultraviolet light irradiation cross-linking machine is positioned on one side of the machine head of the plastic extruding machine and is used for performing ultraviolet light irradiation on the insulated wire core; the traction unit is provided with a first guide wheel and a second guide wheel, the first guide wheel movably abuts against the conductor, and the second guide wheel movably abuts against the insulated wire core; the heating unit is positioned between the first guide wheel and the extruding machine head and is used for heating the conductor; the cooling unit is positioned on the side of the ultraviolet light irradiation cross-linking machine and is used for cooling the insulated wire core; the first guide wheel and the second guide wheel jointly ensure that the conductor and the insulated wire core keep proper tension in the whole production process, and ensure that the conductor and the insulated wire core are positioned at correct working positions in the machine head of the plastic extruding machine and the ultraviolet irradiation cross-linking machine.

The invention provides tape casting drying equipment and system for a polyimide film, and relates to the technical field of tape casting drying of polyimide films. The casting drying equipment for the polyimide film comprises a drying box body which is provided with a feeding opening and a discharging opening for materials to pass through, and a plurality of heating areas are formed in the drying box body; the supporting and conveying device is located in the drying box body and used for transferring materials from the feeding port to the discharging port, the supporting and conveying device comprises a plurality of heating rollers distributed at intervals in the horizontal direction, the transmission part is used for driving the heating rollers to rotate, and the conveying belt is arranged on the heating rollers in a tensioning and sleeving mode; the multiple drying devices are distributed in the multiple heating areas in a one-to-one correspondence mode, and the multiple heating areas are distributed in the drying box body in an array mode along the conveying path of the conveying belt. The equipment can solve the problems of surface flaws caused by glue solution disturbance by hot air, 'surface drying 'phenomenon and'hole' defect caused by too fast devolatilization of the surface and the interior of the glue film, and violent'shrinkage 'problem when the glue film is stripped from a base material and dragged in the existing tape casting drying technology of the polyimide film.

The application provides a calendering method of aramid insulation paper, and relates to the field of high polymer chemistry and polymer processing, and comprises the following steps: step one, preheating aramid insulation paper; step two, feeding the substrate into a calendering machine, and performing calendering treatment at a set temperature, pressure and linear speed by using a multi-stage pressure control system; and step three, monitoring the thickness uniformity and surface quality of the aramid insulation paper in real time through an online detection system. The application has the following advantages: through the synergistic effect of multi-stage progressive pressure control, high-precision temperature regulation (±2 ℃) and optimized linear speed, and in combination with machine vision online detection and real-time feedback, the shortcomings of traditional calendering processes are effectively overcome, the surface smoothness, thickness uniformity and mechanical properties of the aramid insulation paper are significantly improved, the precision, efficiency and quality consistency of the production process are greatly improved, and the generation of surface defects such as stripes and corrugations is avoided.

The additive manufacturing method is applied to the seamless steel tube perforating roller, and the seamless steel tube perforating roller comprises an inlet cone and an outlet cone which are connected in the axial direction of the seamless steel tube perforating roller; the additive manufacturing method comprises the following steps: integrally turning the roller surface of the seamless steel pipe perforating roller; a plurality of long grooves distributed in the circumferential direction are formed in a multi-layer cladding area on the roller surface, intervals are formed between the long grooves, and the length direction of the long grooves is consistent with the length direction of the seamless steel pipe perforating roller; wherein the multi-layer cladding area is a roller surface of the inlet cone and a roller surface of a first section of the outlet cone connected with the inlet cone; the remaining part of the outlet cone is a single-layer cladding area; preheating the roller surface of the seamless steel pipe perforating roller; at least one time of laser cladding is conducted on the multi-layer cladding area, and the long groove is repaired after each time of laser cladding; covering laser cladding is carried out on the whole roller surface, and the long grooves are repaired after covering laser cladding; and slowly cooling.

The invention relates to a shaft sleeve gear electroplated layer finishing method, which adopts a graded electroplating process aiming at the multi-layer electroplating requirements of three areas A, B and C on the surface of a shaft sleeve gear: firstly electroplating a cadmium layer in the area A and a silver layer in the area B, and finally electroplating a thick chromium layer in the area C. And in the electroplating process of the C-region thick chromium layer, the finishing allowance is reserved, and precise grinding is carried out through a special finishing tool so as to ensure that the size and form and location tolerance of the C-region thick chromium layer meet the requirements of finished products. The finishing tool comprises a core shaft and a back cap, the sleeve shaft gear is installed on the core shaft, high-precision radial fixing and centering are achieved through conical surface fit and an elastic petal structure, and centering errors caused by threaded connection are overcome. According to the finishing method, the size control problem of the thick electroplated layer is effectively solved, the quality and the consistency of multi-plating layer surface treatment are improved, the machining defects are reduced, and the production efficiency is improved. The method is suitable for surface treatment processing of the multi-layer electroplating complex part, and has the advantages of being low in production cost, easy and convenient to operate and capable of being repeatedly used.

The invention discloses a grain refinement medicine foil based on multi-parameter composite regulation and control. A preparation method comprises the steps of raw material selection, casting, heat treatment, cold rolling, finished product annealing, surface treatment and the like. By accurately controlling alloy components, adding Fe, Si, Mg and aluminum-titanium-boron wires as grain refiners and combining semi-continuous casting and electromagnetic stirring technologies, grain refinement of the aluminum alloy is realized. In the heat treatment process, a homogenizing annealing and multi-stage heat treatment process is adopted, so that the strength and toughness of the material are further improved. In the cold rolling process, the technological parameters of primary rolling, intermediate annealing and finish rolling are optimized, so that the aluminum foil has good surface quality and dimensional precision. The surface treatment adopts alkali washing, acid pickling, passivation and coating treatment, and an epoxy resin coating is selected, so that the corrosion resistance of the aluminum foil and the adhesive force of the coating are remarkably improved. The medicine foil has excellent mechanical performance, corrosion resistance and surface quality, and is suitable for the fields of medicine packaging and the like. Through a multi-parameter composite regulation and control process, aluminum foil grains are remarkably refined, and the requirement of modern medicine packaging for high-performance materials is met.

The utility model relates to the field of bicycle fittings paint spraying, disclose a kind of bicycle fittings paint spraying device, including the support platform for supporting, the top of the support platform is rotatably connected with rotary table, the inside of rotary table is rotatably connected with multiple rotating rods, the top of the rotating rod is all fixedly connected with rotary limit disc, the top of the rotary limit disc is rotatably connected in the top of rotary table, the top of the rotary limit disc is all fixedly connected with clamping frame, the top right side of the support platform is fixedly connected with right side support frame, the inside of right side support frame is fixedly connected with right side limit frame, paint spraying assembly is installed in the inside of right side limit frame. In the utility model, the problem of incomplete edge coverage and uneven film thickness caused by spraying is solved, the corrosion resistance, appearance consistency and surface defects such as orange peel and particles are effectively prevented, and the coating quality and durability are improved.

The invention discloses a quantum dot detector preparation method based on a one-step synthesis method, and belongs to the technical field of infrared detectors. The method comprises the following steps: providing a substrate; preparing a bottom electrode on the substrate; preparing a hole transport layer on the bottom electrode, wherein the hole transport layer comprises a NiOx thin film and a PbS-EDT thin film; preparing a quantum dot light absorption layer on the hole transport layer by adopting a one-step synthesis method, wherein the quantum dot light absorption layer comprises 1550nm PbS CQD; preparing an electron transport layer on the quantum dot light absorption layer, wherein the electron transport layer comprises a C60 thin film and a thin film; and preparing a top electrode on the electron transport layer. According to the method, after the 1550nm PbS colloidal quantum dots are synthesized by adopting a thermal injection method, a quantum dot cleaning step is omitted, liquid phase exchange is directly carried out, water and oxygen introduction and ligand damage are avoided fundamentally, the process is simplified, meanwhile, the surface stability of the quantum dots is guaranteed, and the performance and large-scale production potential of an infrared detector are improved.

The invention relates to the technical field of foam production, in particular to a foam product forming machine which comprises a foam forming machine body, a supporting frame is fixedly connected to the top of the foam forming machine body, a lower mold is fixedly connected to the top of the foam forming machine body, and telescopic air cylinders are fixedly connected to the two sides of the top of the supporting frame. One end of the telescopic air cylinder is fixedly connected with an upper mold, a discharging mechanism used for discharging demolded foam is arranged on the side wall of the foam forming machine body, and cleaning mechanisms used for cleaning impurities in the lower mold and the upper mold are arranged at the two ends of the side wall of the foam forming machine body. The discharging mechanism comprises a cross-shaped connecting rod rotationally connected to the two ends of one side between the upper mold and the foam forming machine body. Compared with the prior art, automatic discharging is achieved through the discharging mechanism, potential safety hazards caused by equipment operation or misoperation are reduced, safety is improved, repeated labor of workers is reduced, and labor intensity is reduced.