140results about How to "Guaranteed thickness uniformity" patented technology

A sheet material thickness online detection and adjustment system based on laser ultrasonic comprises a sheet material rolling mechanism and a sheet material thickness online detection mechanism. The sheet material rolling mechanism comprises an upper roller, a lower roller, an upper-lower roller interval adjust mechanism and a PLC control system, the sheet material thickness online detection mechanism comprises an optics system assembly, a high temperature testing meter, a data collection system assembly and a data process system assembly, the data process system assembly transforms bipolar signals which are aliased in peak values and complex in background noise into unipolar signals which are clear in peak values and low in background noise, so that the time that longitudinal wave and transverse wave reach the center of the bottom surface of the sheet material for the first two times is obtained, and thereby the sheet material thickness value is calculated, the measured sheet material thickness value is compared with a preset sheet material thickness value in the PLC control system, the PLC control system transmits forward rotating/backward rotation movement commands to a servo motor, so that the interval between the upper roller and the lower roller is adjusted, and the sheet material thickness value is made to be consistent with the preset sheet material thickness value.

A sheet thickness online measurement system based on laser ultrasound comprises a light path system integration, a high-temperature detection meter, a data acquisition system integration and a data processing system integration, wherein the light path system integration comprises a U-shaped grounding frame, a three-dimensional mobile platform and a control cabinet integrating with a laser transmitter and a light path regulating system; the data acquisition system integration comprises a capacitive displacement sensor, a pre-amplifier and a high-speed data acquisition card, the capacitive displacement sensor is arranged at the first distance position below the alignment position of the bottom surface of a sheet, the data processing system integration converts bipolar signals having aliasing peak values and complex background noise into unipolar signals having clear peak values and low background noise, and therefore the time when longitudinal waves and transverse waves reach the alignment position of the bottom surface of the sheet first two times is accurately obtained, and the thickness of the sheet is calculated. The sheet thickness online measurement system has the advantages that the sheet thickness online measurement system is suitable for online measuring the thickness of the sheet under extreme environments such as high temperature, strong corrosion and high radiation, thickness measurement is accurate, and errors are small.

The invention discloses a metal film preparation method. The method comprises the following steps: 1, coating an adhesive in a selected area on the surface of a metal substrate; 2, allowing the adhesive to stand for drying to form an adhesive layer, and coating a metal film on the surface of the metal substrate and the adhesive layer; and 3, infiltrating the metal substrate in an organic solvent after the coating completion to soften the adhesive layer, and carrying out ultrasonic treatment of the metal substrate in the organic solvent to remove the adhesive layer to obtain a metal film having a stepped structure. The adhesive is coated to protect the partial surface of the substrate, and steps are formed on the surface of the film through the adhesive removal mode, so the completeness and edge clearness of the stepped structure of the metal film are guaranteed. The metal film prepared in the invention is suitable for contourgraphs and scanning probe microscopes to measure the heights of the steps of the metal film and standardize the thickness of the film, and is also used for the metering calibration of non-contact direct thickness testers (such as X-ray diffractometers and X-ray fluorescence thickness testers).

An online sheet thickness detecting and adjusting system based on laser ultrasonic comprises a sheet rolling mechanism and an online sheet thickness detecting mechanism; the sheet rolling mechanism comprises an upper roller, a lower roller, an adjusting mechanism for the distance between the upper roller and the lower roller and a PLC controlling system; the online sheet thickness detecting mechanism comprises an optical path system assembly, a high temperature detecting meter, a data collecting system assembly and a data processing system assembly. The data processing system assembly can convert bipolar signals with aliasing peak values and complex background noise into unipolar signals with clear peak values and small background noise, time for the longitudinal wave and the horizontal wave to reach an O point on the upper surface of a sheet at the first two times can be obtained accurately, the sheet thickness value can be calculated out, the measured sheet thickness value is compared with a preset sheet thickness value in the PLC controlling system, the PLC controlling system can send forward rotation/reversed rotation moving instructions to a servo motor, the distance between the upper roller and the lower roller can be adjusted, and the sheet thickness value can be identical with the preset sheet value.

An online plate thickness measuring system based on laser ultrasonics comprises a light path system integration module, a high-temperature detector, a data collection system integration module and a data processing system integration module. The light path system integration module comprises a U-shaped grounding frame, a vertical moving platform and a control cabinet, a laser transmitter, a light path adjusting system and a scanning galvanometer are integrated in the control cabinet, the data collection system integration module comprises a capacitive displacement sensor, a preposed amplifier and a high-speed data collection card, the capacitive displacement sensor is arranged at a first distance position above the upper surface of a plate, and the data processing system integration module converts bipolar signals with aliasing peak value and complex background noise into unipolar signals with clear peak value and low background noise so as to accurately acquire time when longitudinal wave and transverse wave reach an O point on the upper surface of the plate in two previous times to calculate thickness of the plate. The online plate thickness measuring system has the advantages that the system utilizes a laser ultrasonics principle to measure thickness and is suitable for online measuring of thickness of the plate in extreme environment with high temperature, high corrosion and high radiation, accurate in thickness measuring and few in thickness measuring error.

The invention provides a display substrate, a preparation method of the display substrate and a display panel. The display substrate comprises a substrate, a first electrode and a pixel defining layer, wherein the first electrode is arranged on the substrate; the pixel defining layer is arranged on the substrate and the first electrode; and the pixel defining layer defines a plurality of sub-pixelareas on the substrate, and the side wall of each sub-pixel area is provided with a microstructure surface. After ink-jet printing is carried out in the sub-pixel areas, ink drops can be prevented from climbing upwards along the edges by the microstructure surface in the process of drying and film forming of the ink drops, so that the uniformity of the film-forming thickness is ensured, and thenthe light-emitting uniformity of the display panel is further improved.

The invention discloses a planetary rotary device for epitaxial growth of silicon carbide. The device comprises a base, a central rotary shaft and a planetary disc, wherein the central rotary shaft is arranged on the base; the planetary disc is mounted on the central rotary shaft and can rotate along the central rotary shaft; a plurality of workpiece support plates are distributed at the periphery of the planetary disc; air inlet orifices for communicating with the peripheries of the workpiece support plates and driving the workpiece support plates to rotate after ventilation are formed on the base, the central rotary shaft and the planetary disc. The device has the advantages of being simple in structure, low in cost and easy to mould, and the rotary stability and continuity can be greatly improved.

The invention relates to a hot-plate type continuous vacuum drying system, comprising a main machine and a cylinder of the main machine; a main shaft is arranged inside the cylinder of the main machine; a bed bracket is arranged on the inner wall of the cylinder; a plurality of layers of plate-style jacket heating devices are arranged on the bed bracket; the main shaft passes through central apertures of each plate-style jacket heating device and is arranged between the top and the bottom of the cylinder; the upper end faces of the plate-style jacket heating devices are material-bearing faces; the main shaft is provided with a plurality of branch arms and material turning plates are arranged on the lower end faces of the branch arms; and the plate-style jacket heating device is a plate jacket casing inside which a heat conducting pipeline is arranged; the plurality of layers of plate-style jacket heating devices can be at least divided into a high-temperature layer group, an intermediate-temperature layer group, a low-temperature layer group and a cooling layer group from top to bottom. The hot-plate constant vacuum drying system adopts the combined heating system adopting both drying and cooling so as to reduce the processes and largely enhance the manufacturing efficiency and the productivity; and simultaneously the drying system can realize the constant vacuum feeding and discharging, solvent recycling and disposal of harmful gas.

The invention relates to a mass and efficient integral manufacturing method of a terahertz hollow core rectangular waveguide, and belongs to the field of precise manufacturing of a waveguide micro device. The mass and efficient integral manufacturing method comprises the following steps of 1, fabricating a sacrifice core die comprising low-melting point alloy; 2, electroplating gold on an upper surface of the sacrifice core die to obtain an electroplating gold layer; 3, taking a single-side gold plating body of the sacrifice core die from a substrate; 4, electroplating a second layer of gold on a surface of the single-side gold plating body of the sacrifice core die; 5, electroforming copper on a surface of the electroplating gold layer to obtain an electroforming copper layer; 6, performing precise polishing on a surface of the electroforming copper layer to obtain a required size; and 7, removing the low-melting point alloy to obtain the terahertz hollow core rectangular waveguide. By the processing method, high-accuracy mass production of the sacrifice core die can be achieved, the sacrifice core die is efficiently and conveniently removed by a heating method, so that the mass and efficient manufacturing of the terahertz hollow core rectangular waveguide can be achieved.

Disclosed is a linear evaporation source used for forming a thin film for an organic semiconductor device, the linear evaporation source comprising a crucible having a receiving space formed therein, for accommodating an evaporation material and an opening section formed at one side of the crucible in a length direction, wherein the opening section becomes narrow as it travels from both ends to a center portion thereof. If the thin film is formed using the linear evaporation source, a low material use rate of the vacuum evaporation source for the formation of the thin film is improved, thickness uniformity of the deposited thin film throughout the whole area is secured, and shadow effect due to the shadow mask is improved.

The invention relates to a lithium transfer type lithium supplementing method for a lithium battery. The lithium supplementing method takes a base film-substrate-lithium metal composite structure as alithium transfer layer, enables the lithium metal side of the lithium transfer layer to be opposite to a lithium supplementing process surface of an electrode layer, removes the base film layer after1-100kg of pressure rolling, and forms a lithium supplementing electrode finished product with a substrate-lithium-electrode structure. Lithium is supplemented through the lithium transfer layer, theprocess safety is improved, meanwhile, nanoscale regulation of the lithium supplementing thickness is achieved, a uniform and continuous lithium supplementing layer is obtained, and a more excellentlithium supplementing effect is obtained; winding equipment is used for lithium transfer operation, the method is suitable for large-scale production, the technology is suitable for existing equipment, and special equipment does not need to be developed; as the substrate layer is made of the material with high ionic conductivity, the performance of the battery is not influenced.

The invention discloses a polymer nanometer composite material and a preparation method thereof. The method comprises following steps: (1) a composite nonwoven fabric of a nanofiller and a polymer matrix is prepared by an electrospinning method; the composite fiber constituting the composite nonwoven fabric has the polymer matrix as a main fiber skeleton, and the nano filler is dispersed in the main fiber; (2) the polymer nanometer composite material can be obtained by hot pressing the composite nonwoven fabric. Compared with the general film forming process, the method of the invention is notonly simpler and more efficient, but also has better uniformity and homogeneity of the prepared composite material. The composite material of the invention can realize the uniform dispersion of the particles of the filler material in the composite material, the surface is smooth, the interior is dense and has no pores, the thickness is uniform and fine controllable in a wide range. At the same time, it has excellent dielectric properties and high performance stability, and is expected to be widely used in dielectric materials.

The invention provides a preparation method of a SiC fiber prepreg tape with an attached interface layer. The preparation method comprises the following steps of introducing a continuous silicon carbide fiber bundle onto a tension pulley after being unwound through a godet roller and a guide wheel, sending the continuous silicon carbide fiber bundle straightly into a desizing device to expand thecontinuous silicon carbide fiber bundle; introducing the continuous silicon carbide fiber bundle onto a gluing device, so that glue fully infiltrates the continuous silicon carbide fiber, after that,introducing the continuous silicon carbide fiber bundle to a silk spreading device, and fully spreading and sizing the continuous silicon carbide fiber bundle by a drawing-in roller in the silk spreading device; and enabling the fully spread and sized continuous silicon carbide fiber bundle to enter a winding roller to obtain the flat and uniform prepreg tape. The prepreg tape prepared by the invention not only can greatly improve the toughness of the silicon carbide fiber, but also a deposited interface layer is uniform, meanwhile, the overlapped parts of two adjacent fiber bundles in the prepreg tape are few, the fiber bundle is good in flatness and thin in thickness, in addition, the preparation equipment can control parameters in real time, and full automation and complete controllability can be realized.

The invention discloses an air inlet device of a furnace tube. The air inlet device of the furnace tube comprises an air inlet, an air inlet pipe and a plurality of nozzles, wherein the air inlet is formed in the lower end of a side wall of a process chamber of the furnace tube, and communicated with an external reaction gas pipeline; the air inlet pipe is arranged in the process chamber, one end of the air inlet pipe is connected with the air inlet, the other end of the air inlet pipe is closed, and the air inlet pipe is arranged around a wafer boat in the process chamber from the bottom up; the plurality of nozzles are uniformly arranged in the length direction of the air inlet pipe and face towards the wafer boat; during the process, a reactive gas is introduced into the air inlet pipe through the air inlet, and the nozzles jet the reactive gas to the wafer boat, so that each layer of silicon wafer in the wafer boat is in uniform contact with the reactive gas, and furthermore, the wafer boat is kept in the stationary state to avoid particle pollution caused by rotation of the wafer boat while the thickness uniformity of a product is ensured.

The invention discloses a space motion device for hemispherical resonance gyro coating. The space motion device for hemispherical resonance gyro coating comprises a revolution motor, a rotation motor,and a swing motor; the revolution motor is connected with a revolution plate through revolution shafting to achieve revolution motion; the rotation motor is connected with a fixture through rotationshafting, and full angle rotation of the rotation motor is realized through an elastic wire rope; and the swing motor converts rotation into up-and-down movement through swing shafting, and the swingmotor drives a rack to actuate a gear through a shift fork to achieve swing of a work piece. According to the space motion device for hemispherical resonance gyro coating, space motion can be realizedin the hemispherical resonance gyro coating process; whole surface one-time film formation is realized; three types of motion of revolution, rotation, and swing are integrated in one; the revolutionspeed, the rotation speed, and the rotation direction are independently adjusted; the speed of upward swing , the speed of downward swing , an elevation angle of swing, and up and down dwell time canbe optionally set according to requirements; and coating uniformity is improved, the problem of the low qualified rate of hemispherical resonance gyro coating is solved, and production efficiency is improved.

The invention provides a direct growth method of a flexible X-ray sensor scintillator layer. The growth method at least comprises the steps that firstly a flexible substrate layer of which the surfacehas preparation of a pixel array layer is provided; then the flexible substrate layer of which the surface has preparation of the pixel array layer is fixed on the plane support or the curved supportof the top part of a cavity, and a CsI scintillator layer is deposited on the surface of the pixel array layer by heating the CsI source of the bottom part of the cavity, wherein the CsI scintillatorlayer includes a CsI broken crystal layer and a CsI columnar crystal layer; and finally a sealed damp-proof layer is formed on the surface and the sidewall of the CsI scintillator layer. With application of the direct growth method, the CsI scintillator layer can be directly grown on the flexible substrate layer and the CsI layer can remain intact without crack when the sensor is bent, and the CsI can maintain performance without degradation even under the condition of multiple times of large-angle bending so as to have great reliability.

The embodiment of the invention provides a crosslinking polyethylene foam cotton material, which is prepared from 65 to 90 weight parts of polyethylene, 1 to 30 weight parts of poly-bio-oil, 2 to 30 weight parts of thermoplastic elastomers, 0.5 to 5 weight parts of foaming agents, 0.5 to 4 weight parts of sensitizing agents and 1 to 4 weight parts of antioxidants. The foam cotton material has goodperformance such as the longitudinal tensile strength being greater than 3.5 MPa, the longitudinal elongation percentage being greater than 200 percent, the transverse tensile strength being greaterthan 1.5MPa, the transverse elongation percentage rate being greater than 350 percent, the 25-percent compression ratio being lower than 80KPa. Meanwhile, the foam cotton material has the apparent density being 0.2 to 0.5g/cm<3>. The polyethylene foam cotton can be applied into a sealing buffering or adhesive tape base materials of view windows and touch screens of electronic products; the thickness of the foam cotton is 0.04 to 0.5mm; the thickness deviation is within 10 percent.

The invention discloses a light emitting diode, comprising a semiconductor layer sequence having an active layer between a first conductivity type layer and a second conductivity type layer for generating first light of a first peak wavelength, the first conductivity type layer being located on one side of the positive direction of the semiconductor layer sequence, and the second conductivity typelayer being partially exposed; and a wavelength conversion layer arranged in the positive direction and side wall of the semiconductor layer sequence, the wavelength conversion layer absorbing the first light emitted from the semiconductor layer sequence and emitting second light of a second peak wavelength different from the first peak wavelength; wherein a second electrode and the wavelength conversion layer are on the same side of the light emitting diode, and the distance from the second electrode to the side wall of the semiconductor layer sequence is not less than 50 microns, which solves the problem that the side wall of the semiconductor sequence leaks the first light, and improves the uniformity of light emission of the light emitting diode.

The invention relates to a feeder head coating structure and treatment method of an aluminum alloy low-pressure cast. The feeder head coating structure comprises a mold and a feeder head formed by a cavity in the mold. The feeder head is communicated with a mold cavity forming a cast body, and a sintered feeder head coating is arranged between the mold and the feeder head. The thicknesses, from the bottom of the feeder head to an opening, of the feeder head coating are gradually decreased to form a gradient. The feeder head coating with the gradient is adopted for making the coating at the bottom of the feeder head be thick, the thicknesses from the bottom of the feeder head to the opening are gradually decreased, in this way, the thermal insulation effect is excellent, molten metal at the bottom of the feeder head is prevented from solidifying firstly in the process of feeding, it can be effectively guaranteed that sufficient feeding is performed on the cast through the feeder head, the feeder head coating has certain surface strength and smoothness after sintering, the adhesion property of the coating on the mold is good, the combination between coatings is good, the possibility that in the casting process, the high-temperature molten aluminum erodes the coating is lowered, and the feeder head coating is effectively prevented from falling off in the process of cast stripping.

The invention discloses a turbine blade thermal barrier coating finishing protection device and a method. The turbine blade thermal barrier coating finishing protection device comprises a pull rod, an air inlet edge spoiler, a protection box and an exhaust edge spoiler; the protection box is of an open structure, a through hole is formed in the open bottom face of the protection box, a clamping groove is formed in one end of the pull rod and used for fixing a tenon of a blade to be finished, and the other end of the pull rod penetrates through the through hole in the bottom face of the protection box to fix the tenon of the blade to be finished into the protection box; the air inlet edge spoiler is arranged on one side wall of the protection box and used for protecting an air inlet edge of the blade to be finished; and the exhaust edge spoiler is arranged on one side wall of the protection box and used for protecting the exhaust edge of the blade to be finished. Firstly, wax seal is adopted to block an air film hole, a top cover hole and a tail crack of a turbine blade, and then the air inlet edge spoiler, the exhaust edge spoiler and the protection box are arranged to carry out finishing protection on the air inlet edge, the exhaust edge and the tenon.

The embodiment of the invention provides a crosslinked polyethylene foamed material which is prepared from the following components in parts by weight: 65-90 parts of polyethylene, 5-30 parts of polymerized bio-oil polyether polyol, 5-30 parts of a thermoplastic elastomer, 0.5-7 parts of a foaming agent, 0.5-4 parts of a sensitizer and 0.5-5 parts of an antioxidant. The crosslinked polyethylene foamed material has good properties such as longitudinal tensile strength greater than 3.5MPa, a longitudinal elongation rate greater than 200%, transverse tensile strength greater than 1.5MPa, a transverse elongation rate greater than 350%, a 25% compression ratio less than 80KPa, and the like, and meanwhile the apparent density of the foamed material is 0.2-0.5g/cm<3>. The crosslinked polyethylenefoamed material can be used as a sealing buffer or adhesive substrate of a window and a touch screen of an electronic product.

The invention relates to a continuous casting equipment of non-ferrous alloy, providing a steel belt wheel-type continuous casting machine for continuous casting of lead belts. A steel belt supporting structure is arranged on the radial outer side of the cavity section corresponding to the crystalizing wheel. The steel belt supporting structure comprises at least one set of supporting bodies, the steel belt being positioned between the supporting body and the crystallizing wheel. One side of the crystallizing wheel corresponding to the steel belt tightly clings to the crystallizing wheel rim on both sides of the crystallizing cavity, while the other side tightly clings to the supporting body; a supporting structure external cooling device and a supporting structure internal cooling device are arranged; the cooling system of the steel belt comprises a steel belt spray cooling device and a contact-type cooling device formed by steel belt supporting structure. By arranging the steel belt supporting structure, the deformation of the steel belt is avoided, and enough cooling capacity is provided, which is applicable to the continuous casting of lead belts of large height and width.