18results about How to "Reduce surface damage" patented technology

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

The present application relates to the technical field of machining, in particular to a clamp for machining the radial surface of a steam turbine blade by a four-axis machine tool; the driving disc is fixedly installed on the upper surface of a displacement base, and the displacement base is used for driving the driving disc to adjust the lifting; the driving disc is provided with a core expansion clamp used for internally expanding and positioning the shaft hole of the steam turbine blade. The radial driving assembly comprises a ring sleeve base, a worm drive, a plurality of rotating guide rods, a push head and a linkage rod. The ring sleeve clamp group is composed of a clamping ring, a split clamping petal and an abutment, the split clamping petal can be self-adapted to the outer periphery of the blade under the deformation of the clamping ring, and the surface of the abutment is provided with a flexible rubber pad to prevent surface damage. The bidirectional clamping structure combining internal expansion and external wrapping is used to realize high-precision positioning and stable clamping of the steam turbine blade, and the present application has the advantages of automatic adjustment, flexible wrapping and high repeat accuracy, and significantly improves the stability and processing efficiency of the four-axis machine tool processing.

This invention provides a method, apparatus, and semiconductor device for atomic layer etching of hafnium oxide. The method includes performing multiple cycles of etching on the hafnium oxide layer on the top surface of the device to be etched within a reaction chamber until the hafnium oxide layer reaches the target etching requirement. Each cycle includes: adjusting the temperature of the device to be etched to a target reaction temperature; providing a process gas containing a chlorine-based gas; dissociating the process gas into a plasma containing ions and chlorine radicals; filtering the ions in the plasma to obtain chlorine radicals, and reacting the chlorine radicals with the top surface of the hafnium oxide layer at the target reaction temperature to generate a hafnium tetrachloride layer; and heating the device to be etched to a target sublimation temperature to vaporize and discharge the hafnium tetrachloride layer. This invention can reduce the damage to hafnium oxide during etching and achieve higher etching uniformity and precision.

The utility model relates to the technical field of traction sheave, concretely is a kind of traction sheave with protective structure, including inner rim and outer rim, it is fixed with multiple connecting handles between inner rim and outer rim, the inside of inner rim is inserted with insert piece, and the inside of insert piece is embedded with protective structure, and protective structure is turned out after being extracted from insert piece and unfolding, and the protective structure of turning out wraps inner rim and outer rim;Beneficial effects are that: by the inner ring mouth of insert piece insertion inner rim, then the protective structure is extracted from insert piece and turned out, so that it wraps inner rim and outer rim;This protective mode can avoid that traction sheave is bumped by external object in the storage process, reduces surface damage, guarantees the structural integrity and transmission accuracy of traction sheave.

The laser positioning cutting device for the automobile lamp lens comprises a base, and two transverse sliding rails are oppositely and fixedly connected to the two sides of the base; a longitudinal guide rail is connected between the two transverse slide rails in a sliding manner; the top of the longitudinal guide rail is slidably connected with a laser cutting machine, and the longitudinal guide rail and the laser cutting machine are both driven by a linear module. A negative-pressure channel is formed in the base, and one end of the negative-pressure channel extends out of the base; limiting mechanisms are inserted into the positioning insertion holes, each limiting mechanism comprises a bottom block, the positioning insertion holes are formed in the base at equal intervals, and after the limiting mechanisms are inserted, horizontal displacement of the lens is limited through physical constraint of the positioning insertion holes; meanwhile, the vacuum suction cup is matched with the sealing ring, uniform adsorption force is formed on the bottom of the lens, shaking caused by vibration and uneven weight during cutting is prevented through double effects, and it is ensured that the cutting track is consistent with the design contour of the lens; the limiting mechanism is installed in an insertion mode, and when lenses of different specifications are replaced, insertion hole combinations can be rapidly adjusted and positioned, and universality and efficiency are both considered.

The application discloses an epoxy resin-nano cerium oxide composite polishing liquid and a preparation method thereof. The epoxy resin-nano cerium oxide composite polishing liquid comprises the following components in parts by weight: 10-25 parts of water-based epoxy resin, 3-5 parts of modified epoxy resin, 15-30 parts of nano cerium oxide, 20-40 parts of water, 10-20 parts of ethanol, 2-5 parts of a dispersing agent, 1-3 parts of a surfactant, 0.5-2 parts of a stabilizing agent, 0.1-0.5 parts of polydimethylsiloxane and 0.3-1 part of a preservative. The modified epoxy resin is prepared by modification of a silane coupling agent, tris(4-carboxyphenyl) imidazole and fulvic acid. The preparation method is completed through the steps of preparing a solvent system, dispersing nano cerium oxide and composite grinding. The method can strengthen the interfacial bonding force, inhibit the abrasive aggregation, improve the dispersion stability, polishing performance and storage durability of the polishing liquid, and reduce the surface roughness of a workpiece, and is suitable for precision machining of optical elements, semiconductor wafers and the like, and meets the needs of high-end manufacturing ultra-precision polishing.

This utility model discloses an auxiliary positioning device for a medium- and high-voltage electronic aluminum foil corrosion production line, relating to the field of aluminum foil corrosion production technology. It includes a tank body with a positioning mechanism fixedly installed in the middle, and side guide rollers fixedly installed at both ends of the tank body. Using this structure, the auxiliary positioning device drives the slide and plate to move vertically via a screw, precisely adjusting the depth of the pressure roller's immersion in the electrolytic cell. This adapts to different thicknesses of aluminum foil and electrolyte concentrations. Simultaneously, the limiting discs at both ends of the pressure roller and side guide rollers, with their spacing adjusted by hand-tightening screws, effectively constrain the lateral displacement of the aluminum foil. The combination of these two components ensures that the aluminum foil is conveyed centered along a preset path, avoiding deviation and friction with the electrode plate, reducing surface damage, and ensuring that the contact angle and area between the aluminum foil and the electrolyte are always optimal. This significantly improves corrosion uniformity and conveying accuracy, and reduces the scrap rate.

The present disclosure provides a test block structure, a test tool for hydraulic valves and a disassembly tool for hydraulic valves, the test block structure is used for testing of hydraulic valves, the test block structure comprises a test block, a first groove is formed in an end of the test block, a boss is formed by extending outward from a bottom wall of the first groove, a first mounting hole is formed in the boss, at least part of the hydraulic valve is matched with the first mounting hole, and a plurality of liquid passing openings are arranged on a side of the test block. The end of the test block of the present disclosure has the first groove and the boss, and a gap is formed between the first groove and the boss, when the valve body and the valve sleeve of the hydraulic valve are disassembled, the gap provides a working space for the disassembly tool, and the disassembly work is facilitated, and the present disclosure provides a scheme for improving the test reliability, the disassembly portability and the appearance integrity of the hydraulic valve, and provides protection for the qualified rate of the hydraulic valve product.

The present disclosure provides an etching solution, a GaN material etching method and a gallium nitride transistor manufacturing method, and belongs to the technical field of semiconductors. The etching solution comprises a tetramethylammonium hydroxide solution and an oxidizing agent, the concentration of the tetramethylammonium hydroxide solution is 0.1-2.0 mol / L, and the concentration of the oxidizing agent is 0.01-0.5 mol / L. The present disclosure can improve the etching effect of GaN materials.

This utility model relates to the field of aquaculture equipment technology, specifically to an adjustable cover plate device and a fish raft for fish suction and harvesting operations. An adjustable cover plate device for fish suction includes an annular grid with inner and outer ring supports. Multiple radially distributed support rods are arranged between the inner and outer ring supports along the circumference, dividing the grid into multiple fan-shaped grooves. Multiple detachable cover plates are provided at the top of the fan-shaped grooves. A fish raft includes an annular suction chamber, an inner cover, an outer cover, and an annular inclined plate. Inner and outer support parts are provided on the outer side of the inner cover and the inner side of the outer cover, respectively. An adjustable cover plate device for fish suction is provided on the inner and outer support parts. A harvesting outlet is provided on one side of the annular suction chamber. The annular inclined plate is inclined downwards from the side opposite the harvesting outlet of the annular suction chamber to the side of the harvesting outlet. This utility model allows for simple mechanical operation to disassemble the grid cover plate, controlling the passage area for fish, reducing surface damage to fish, increasing the fish harvesting rate, and reducing the difficulty of operation for workers.

This utility model relates to the field of bearing processing technology and discloses a drilling device for bearing production. The device includes a body assembly and a support plate. The top of the support plate has a moving groove, and the outer periphery of the top of the support plate has an installation groove. This utility model uses three circumferentially distributed adjusting components and a double-sided gear linkage mechanism to synchronously drive multiple clamping parts to move radially, achieving precise concentric clamping of the inner and outer rings of bearings of different diameters. The transmission structure of the lead screw and the driven bevel gear ensures consistent displacement of each clamping part. Combined with the rubber anti-slip texture design, it effectively prevents bearing slippage and reduces surface damage during clamping. The dual positioning mechanism of the positioning plate and the clamping plate further ensures strict concentricity of the inner and outer rings, significantly improving the drilling position accuracy, effectively reducing vibration and noise problems caused by eccentricity, and extending the service life of the bearing.

The utility model discloses a hot-rolled wire rod head and tail ring-shaped binding device for a PF wire C-shaped hook, which belongs to the technical field of hot-rolled wire rod production, and comprises two groups of limiting components which are symmetrically arranged at the head and tail ends of a lower side hook body beam arm of the C-shaped hook, and a binding gap for accommodating a hot-rolled coil is formed between the two groups of limiting components; the limiting assembly is detachably connected to the lower side hook body beam arm, and the width of the binding gap and the original length of a hot-rolled coil in the coil collecting barrel are adjusted in a matched mode. The C-shaped hook is conveniently provided with the two limiting assemblies for fixing the head ring shape and the tail ring shape of the hot-rolled coil, the limiting assemblies and the hook body beam arm on the lower side can be conveniently disassembled or assembled, the width of a binding gap between the two limiting assemblies and the length of the hot-rolled coil can be conveniently adjusted, and springback of the head ring shape and the tail ring shape of a hot-rolled wire rod is avoided.

The utility model provides a logistics supply chain management device. The logistics supply chain management device comprises a conveying belt structure, the conveying belt structure comprises a fixing frame, adjusting assemblies are installed on the surfaces of the front side wall and the rear side wall of the fixing frame, a supporting frame is fixedly connected to the top of the fixing frame, and an industrial recognition camera is installed on the surface of the supporting frame; the industrial recognition camera is located on the upper side of the conveying belt structure, the adjusting assembly comprises a plurality of threaded rods, the threaded rods are rotationally connected with the inner wall of the fixing frame, a vertical groove is formed in the portion, located on the front sides of the threaded rods, of the surface of the fixing frame, and a third motor is fixedly connected to the portion, located on the top of the threaded rods, of the inner wall of the fixing frame. The logistics supply chain management device provided by the utility model has the advantage of being capable of effectively reducing the possibility that the parcels are seriously damaged or damaged after being pushed into the loading box by the swing arm.

This invention discloses an environmentally friendly cleaning process for semiconductor ceramic structural components in the field of semiconductor precision component surface cleaning technology. The process uses deionized water, citric acid monohydrate, oxalic acid dihydrate, aminosulfonic acid, and sodium gluconate to prepare a weak acid base solution, and adds polyaspartic acid silane complex micelles, betaine tartaric acid corrosion inhibitor complex salts, alkyl glycoside aqueous solution, hydrogen peroxide aqueous solution, and ammonia to prepare a weak acid composite cleaning solution. After pretreatment, reverse purging, replenishment washing, immersion cleaning, rinsing, megasonic bleaching, isopropanol aqueous solution cleaning, spray rinsing, immersion rinsing, overflow rinsing, drying, and post-treatment, this process can remove polishing powder, alkaline deposits, particles, and organic residues from micropores, blind holes, grooves, and sealing surfaces of ceramic structural components under fluorine-free conditions, reducing cleaning corrosion and ion residues, and improving cleanliness and environmental friendliness.

The utility model relates to the technical field of rapid drying equipment, in particular to paper tube processing rapid drying equipment which comprises a shell, the shell is of a cylindrical structure, two symmetrically-distributed mounting rods are fixed to the lower end of the shell, a plurality of tube bases are fixed to the inner wall of the shell through a support, and the tube bases are annularly distributed along the inner wall of the shell at equal intervals. An electric heating tube is inserted into the tube seat, and one end, away from the tube seat, of the electric heating tube fixedly penetrates through the surface of the shell. According to the scheme, the electric heating pipes which are annularly distributed at equal intervals are matched with the temperature adjusting switch, the heating temperature is accurately controlled to be 50-60 DEG C, paper pipe sun crack caused by high temperature is avoided, the air heater conveys hot air into the shell through the annular cavity and the nozzle, airflow circulation is formed in combination with bottom air holes, the paper pipes are evenly heated in the circumferential direction, and the drying efficiency is remarkably improved; the electric heating and hot air dual drying modes can be flexibly adjusted according to requirements, the drying speed is guaranteed, the physical performance of the paper tubes is effectively protected, and the processing requirements of the paper tubes of different specifications are met.

The utility model discloses an aluminum profile supporting and stretching assisting device, and belongs to the field of aluminum profile machining. Comprising a mounting base, a turnover air cylinder and a lifting device, the lifting device is mounted on the mounting base through a bearing mechanism, and the lifting device comprises a spiral elevator, a middle frame, a linear guide rail set and a sliding frame; the middle frame is installed on the bearing mechanism, one end of the overturning air cylinder is fixed to the installation base, the other end of the overturning air cylinder is connected with the middle frame, the sliding frame is installed on the middle frame through a linear guide rail set, the lower portion of the spiral elevator is installed on the middle frame through a fixing plate, and the lower portion of the spiral elevator is connected with the sliding frame. And an upper screw rod of the spiral elevator is connected with the sliding frame. According to the aluminum profile straightening machine, stable lifting and stable conveying of aluminum profiles can be achieved in the aluminum profile stretching process of the straightening machine, the overall production efficiency is improved, and surface damage is reduced.

The invention provides an alkaline polishing solution based on modified silica sol and a preparation method and application thereof. The polishing solution is prepared from, by mass, 5%-15% of silica sol, 0.01%-0.2% of silane coupling agent, 0.1%-1.5% of additive and the balance pH regulator and water, and the pH value of the polishing solution is 8-11 through the pH regulator; the silane coupling agent is an amino silane coupling agent. The alkaline monocrystalline silicon polishing solution provided by the invention is environment-friendly, high in polishing efficiency and low in surface damage, and high-precision polishing of a monocrystalline silicon wafer is realized by modifying silicon dioxide through amino silane to optimize the dispersity of a grinding material.

The utility model provides a tool for round bar stamping or correcting roundness belongs to mechanical processing technical field, including lower die seat, upper die seat, lower die and upper die, the lower die seat installs lower die, the upper die seat installs upper die, the lower die seat and upper die seat are connected through sliding guide structure, the sliding guide structure is equipped with elastic buffer structure in, the utility model discloses can even support round bar, has the buffer and guide function to improve the processing precision and round bar surface quality.