44results about How to "Avoid grooves" patented technology

The invention relates to a forging forming process of an aluminum alloy straight-flanked ring with an extra-large specification. The forging forming process comprises the fist step of blanking; the second step of a first heating before forging, wherein two heating stages are included; the third step of billet fabricating, wherein four stages are included; the fourth step of machining and damage removing; the fifth step of a second heating before forging; the sixth step of forging and ring rolling; the seventh step of heat treatment, wherein two heat treatment stages are included; the eighth step of machining to appropriate dimensions. By means of the forging forming process of the aluminum alloy straight-flanked ring with the extra-large specification, forging formability and mechanical performance of the aluminum alloy straight-flanked ring with the extra-large specification are improved.

The invention relates to a carbon fiber bicycle frame production process, which comprises the following steps that (1) each carbon fiber component module is built by a carbon fiber composite material, and comprises a front fork, a front frame triangle and a rear frame triangle; a gas bag is used as a skeleton of a top tube, a seat tube and a down tube, and a silica gel shell is used as a skeleton of a bottom bracket; a gas bag for the front fork is used as a skeleton of a stem, a crown, a fork blade and a dropout to be rolled, and left and right fork blades of the front fork are produced together when the crown is produced by rolling, so that the center of the crown is ribless; (2) in a preset temperature and pressure environment, carbon fiber components are molded; (3) the carbon fiber components are connected by adopting a gluing process to form a whole frame; and (4) the surface of the frame is coarsely repaired and polished. The silica gel shell is used as the skeleton of the bottom bracket, so that the bottom bracket of the frame is reliably molded, and the strength of the molded bottom bracket connecting structure is high.

The invention provides a low-wear disc type friction plate. A buffer layer containing a magnetic material is added between a steel backing and a ceramic layer, adhesion between the buffer layer and the steel backing combination face can be improved, and the phenomenon that due to the brake high temperature (400 to 500 DEG C), the friction material buffer layer falls off from the steel backing face, and brake fails is avoided. The adhesion strength between the friction piece and the steel backing can be increased, iron hard points are prevented from appearing in the friction face, screeching and brake trembling generated in the brake process can be removed, brake disc scraping and grooves generated by the iron hard points can be avoided, and the service life of the brake disc can be prolonged.

The invention discloses a manufacture method for plugging resin into a soft and hard combined circuit board, and relates to the technical field of circuit board production. The method comprises that S1) an internal circuit pattern is prepared in both a soft core board and a hard core board, and corresponding drilling positions of the circuit pattern are provided with isolated pads whose aperture is greater than that of a drill hole; S2) the soft core board and the hard core board are compressed by PP to form the soft and hard combined circuit board; S3) the drill hole into which resin needs to be plugged is drilled in the soft and hard combined circuit board; S4) copper deposition and electroplating are carried out on the inner wall of the drill hole; S5) the electroplated drill hole is filled with the resin, and the resin is solidified initially; and S6) and residual resin flowing out of the copper surface of the soft and hard combined circuit board is polished by a polishing plate. The isolated pads of the internal circuit in the drilling pole positions are reserved, the thickness of the drilling hole positions is ensured, the problem that the copper surface at the through hole position is recessed caused by low filling capability of NO-FLOW PP used in the soft and hard combined circuit board is solved, and rework of manual polishing due to the fact that the resin polishing plate is not clean is reduced.

The invention relates to a semiconductor device, a manufacturing method, and an electronic device. The method comprises the steps: S1, providing a semiconductor substrate, and forming a virtual grid structure on the semiconductor substrate, wherein the virtual grid structure comprises a virtual grid dielectric layer; S2, depositing a first interlayer dielectric layer on the semiconductor substrate till the first interlayer dielectric layer reaches the a part below the top of the virtual grid structure; S3, forming a second interlayer dielectric layer on the first interlayer dielectric layer till the second interlayer dielectric layer reaches the a part above the top of the virtual grid structure, wherein the second interlayer dielectric layer and the virtual grid dielectric layer have a bigger etching selection ratio; S4, executing a flattening step till the virtual grid structure, and then removing the virtual grid structure. The method not only can reduce the loss of the interlayer dielectric layers in a process of removing a virtual grid electrode, but also can avoid a groove in a flattening process, and further improves the performance and yield of the semiconductor device.

The invention relates to an auxiliary machining system for a building steel structure embedded part. The auxiliary machining system comprises a bottom plate, a clamping and fixing mechanism and a four-corner positioning mechanism. A sliding groove is formed in the middle of the upper end face of the bottom plate. The clamping and fixing mechanism is mounted in the sliding groove in a sliding fit mode. The four-corner positioning mechanism is arranged above the clamping and fixing mechanism. The problems that an existing device cannot guarantee the positioning precision of steel bars on a steelplate, consequently, the positions of the steel bars are uneven, and the supporting strength and supporting stability of the embedded part are affected can be solved, and the problems that an existing embedded part machining device cannot conduct adjusting, clamping and fixing according to the length and thickness of the embedded part steel plate, applicability is poor, time and labor are wastedwhen a clamp is replaced repeatedly, efficiency is poor, the steel plate is clamped unstably, the welding precision of the steel bars and the steel plate is affected, and grooves are easily caused during welding, so that the quality of the embedded part is affected can be further solved.

The invention discloses a wire and a preparation method thereof. The wire is prepared from the following components according to weight percent: 0.45 to 0.95% of silicon, 7.5 to 9.5% of aluminum, 6.0to 10.5% of zinc, 0.1 to 0.3% of iron, 0.2 to 0.5% of magnesium, 0.05 to 0.65% of nickel, 0.08 to 0.14% of boron, 0.02 to 0.035% of yttrium, 0.015 to 0.018% of tin, 0.002 to 0.015% of tungsten, 0.1 to0.3% of chromium, 0.08 to 0.15% of manganese, 0.02 to 0.07% of zirconium, 0.03 to 0.08% of beryllium and the balance of copper and inevitable impurities. According to the wire and the preparation method, the strength and wear resistance of the material are guaranteed, additionally, the impact toughness and break resistance of the material are increased, and the overall performance indices of thestrength, wear resistance, break resistance and the like of the product fully reach the domestic advanced level of similar products.

The invention relates to the technical field of spectacle lenses, and discloses a polishing device for spectacle lens production. A second motor at the top of a polishing box can drive a third rotating shaft to rotate, the third rotating shaft can drive a second rotating shaft to rotate through a second rotating wheel and a transmission belt when rotating, when the second rotating shaft rotates, asecond bevel gear is driven to rotate through a first bevel gear, the second bevel gear is fixedly installed on the outer side of a fourth rotating shaft, a fourth bevel gear is fixedly installed onthe outer side of the fourth rotating shaft, the fourth bevel gear is further connected with a third bevel gear in a meshing mode, the third bevel gear is fixedly mounted on the outer side of the first rotating shaft, so that the second bevel gear drives the first rotating shaft to rotate through the fourth rotating shaft, the fourth bevel gear and the third bevel gear, and a polishing disc is driven to rotate when the first rotating shaft, the second rotating shaft and the third rotating shaft rotate, so that grooves can be prevented from appearing when a lens is polished.

The invention provides a blanking and scraping device for road paving. The device comprises a bottom plate, a handle, a first button switch, a second button switch, a storage battery, a PLC, a blanking assembly, a scraping assembly and universal wheels; through the arrangement of the scraping assembly, discharged materials are scraped to be flat through the scraping plate, so that the materials are in a flat state; subsequent rolling compaction of materials is facilitated, phenomenon of grooves in road is avoided, and road laying quality is guaranteed. A infrared distance measuring sensor is matched with the PLC to control the telescopic rod, so that the leveling operation can be conveniently carried out at different heights; according to the arrangement of the blanking assembly, an electromagnetic valve and a vibration motor are controlled to be powered on and operate through a first button switch, discharging operation is conducted through a discharging pipe, the vibration motor vibrates the discharging pipe, the phenomenon that materials are blocked in the discharging pipe is avoided, normal operation of the blanking assembly is guaranteed, the materials are heated through a heating plate, and the materials are in a warm state; and flowability of materials is ensured.

The invention provides a preparation method of a rewiring layer and a semiconductor structure. The semiconductor structure comprises a substrate and the rewiring layer located on the upper surface ofthe substrate. The rewiring layer comprises a metal column; a dielectric layer, wherein the dielectric layer wraps the metal column, and the dielectric layer comprises a trench, the width of the trench being smaller than that of the metal column, and the upper surface of the metal column being exposed through the trench; a metal seed layer, which covers the upper surface of the dielectric layer and the bottom and the side wall of the trench; and a metal layer which fills the trench and covers the metal seed layer on the dielectric layer. According to the invention, the depth-to-width ratio oftrench filling in the dielectric layer is reduced by manufacturing the early-stage metal columns, and then the metal layer is manufactured, so that the flatness of the rewiring layer can be improved,grooves are prevented from being generated in the formed rewiring layer, the subsequent manufacturing process is facilitated, the process risk of multilayer stacking is reduced, and the process difficulty and cost are reduced.

The invention discloses a rubber frame, a backlight module and a display device. The rubber frame comprises a frame body and a base plate connected to bottom surface of the frame body, wherein a firstthrough hole is formed in the base plate, a positioning ring is arranged on the base plate, surrounds the first through hole and extends towards the front surface of the frame body, and an accommodating space for accommodating a camera is formed by the positioning ring and the first through hole. By arranging the front-mounted camera by virtue of the positioning ring, the situation that a groovefor the front-mounted camera is preserved in a house is avoided, the occupied space of the front-mounted camera is saved, and the area of a non-valid visual region is reduced, so that the screen-to-body ratio is increased.

The invention relates to a separation joint construction structure of a roof ground and a table top layer. The separation joint construction structure comprises a foundation layer, a mortar layer is arranged on the foundation layer, and the section of the mortar layer is an isosceles trapezoid; pVC separation strips are embedded in the upper bottom face of the mortar layer to form separation seams, and sponge strips are arranged in the separation strips to prevent blocking; a side leveling seat is arranged on one side of the mortar layer, the side leveling seat comprises an L-shaped vertical plate and a target plate for leveling, the vertical plate is arranged on the foundation layer, the vertical plate is detachably connected with the target plate through a bolt, the cross section of the target plate is trapezoidal, and the lower bottom surface of the target plate is attached to the vertical plate; and the waist length of the standard plate is equal to that of the mortar layer, and the planes where the two waists are located are attached. The invention further relates to a separation joint construction method of the roof ground and the table top layer. According to different areas of the roof, the ground and the stand, the mortar layer can be manually built or a side flat seat is adopted as a mold, the mortar layer is formed through one-time pouring, the construction operation of the separation joint is flexible, and the forming appearance quality of the separation joint is guaranteed.

The invention provides a turnover aluminum alloy window frame protection device, and relates to the technical field of door frame transportation. The turnover aluminum alloy window frame protection device comprises a window frame, a first protection mechanism, a second protection mechanism and a power supply connecting block, the first protection mechanism is arranged on the outer side of the window frame, the second protection mechanism is arranged between the inner sides of the window frame, and the power supply connecting block is fixedly connected to the middle of the second protection mechanism. Dust in the bottom end of the inner side of the window frame is collected in a centralized mode through a second protection mechanism, the situation that the effect of collecting the dust in the bottom end of the inner side of the window frame is affected by jolting of the window frame in the transportation process is prevented, and excessive dust in the bottom end of the inner side of the window frame is prevented from affecting use and installation of the window frame; the invention provides a turnover aluminum alloy window frame protection device. The problem that in the transportation process of an aluminum alloy window frame, the surface of the aluminum alloy window frame is extruded or collided to form a groove, and use of the aluminum alloy window frame is affected is solved.