93results about How to "Size has little effect" patented technology

The invention discloses a die release agent. The die release agent comprises the following components in parts by weight: 5-15 parts of die release powder, 1-10 parts of an oil compound, 0.1-1 part of an emulsification agent, 70-90 parts of a solvent, 0.1-1 part of a defoaming agent and 0.1-5 parts of graphene. The invention provides a preparation method of the die release agent. The preparation method of the die release agent comprises the following steps: emulsifying the die release powder, the oil compound, the emulsification agent, the defoaming agent, the solvent and the graphene to obtain the die release agent. According to the die release agent, the graphene can be used for enabling the die release agent to form a relatively thin, hard and dense coating on the surface of a cavity, so that the direct contact between sand and a die can be effectively isolated; the die release agent is relatively good in extensibility, film formation property and adhesive force. In addition, a casting part prepared by the die release agent is relatively high in precision.

The invention provides a preparation method of a metal resin complex and the metal resin complex prepared thereby. The preparation method of the metal resin complex comprises the following steps: S1, micropores are formed on the surface of a pretreated metal substrate, and the metal substrate is an aluminum alloy substrate or aluminum substrate; S2, the metal substrate having the micropores on the surface thereof and obtained by the step S1 is soaked in a water-soluble polymer solution for modification; and S3, the surface of the treated metal substrate modified by soaking in the step S2 is coated with a resin composition, and after molding the metal resin complex is obtained. In the metal resin complex, the binding force between metal and resin is strong, and the process is simple, is easy for large-scale production, and has no pollution.

The invention provides a volute fan combined structure which mainly solve the problem how to reduce influences of volutes of two volute fans at two ends on air outflow of a middle volute fan in an air supply device provided with the three volute fans. The structure comprises an installation plate and at least two adjacent volute fans installed on the installation plate. One of the two adjacent volute fans is provided with a middle oblique air outlet located between the two adjacent volute fans, and the middle oblique air outlet obliquely extends in the direction away from a volute of the volute fan provided with middle oblique air outlet from back to front. The second volute fan, the first volute fan and the third volute fan are arranged on the installation plate in a staggered mode so that an air outlet of the second volute fan, the first volute fan and the second volute fan can be staggered, and interference is reduced. The invention further aims at providing a vertical air conditioner.

The invention discloses a thermal control method of a spatial aircraft. The thermal control method comprises the following steps: firstly sticking a heating piece, a thermistor and a temperature controller on a separating and releasing barrel of the spatial aircraft; before all equipment in the spatial aircraft is mounted, blackening all the equipment, and sticking F46 membranes; applying heat conducting grease or enabling a heat insulating pad to be additionally mounted in an assembly process; and finally coating the spatial aircraft in a multi-layer manner with a multi-layer heat insulating assembly so as to complete the thermal control on the spatial aircraft. Compared with a conventional active-passive complex thermal control manner or a conventional active thermal control manner, the thermal control method disclosed by the invention is simple in design, few in electrical loops and high in reliability; in addition, thermal control equipment can be closely attached to the appearance of the spatial aircraft, so that a small inner space is occupied, the thermal control method has a small influence on external envelope sizes, is high in space utilization rate, convenient and quick to implement and simple to operate, and can be suitable for a quick transmitting task of the spatial aircraft.

The invention provides a surface treated metal and a surface treatment method thereof and a metal resin complex and a preparation method of the metal resin complex. The surface treated metal comprises a metal body and an anodic oxidation film layer which is located on the surface of the metal body, the anodic oxidation film layer includes a barrier layer which is in contact with the metal body and a loose layer located on the outer surface of the barrier layer, the loose layer contains anodic oxidation film micropores, the pore diameter of the anodic oxidation film micropores is 10 nm-800 mum, the barrier layer contains barrier layer corrosion pores, the pore diameter of the barrier layer corrosion pores is 10 nm-800 mum, the metal body includes a corrosion layer which is in contact with the barrier layer, the corrosion layer contains metal corrosion pores, the pore diameter of the metal corrosion pores is 10 nm-1 mm, the metal is aluminum alloy or aluminum, the bonding force between the metal and resin is strong, and the surface treated metal is simple in process, is easy for large-scale production, and has no pollution.

The invention provides a preparation method of a metal resin complex and the metal resin complex prepared thereby. The preparation method of the metal resin complex comprises the following steps: S1, anodic oxidation: a metal substrate with a surface comprising an anodic oxidation film layer is obtained by anodic oxidation of a pretreated metal substrate, and the metal substrate is an aluminum alloy substrate or aluminum substrate; S2, treatment with phosphoric acid: the metal substrate containing the anodic oxidation film layer and obtained by the step S1 is immersed in a phosphoric acid solution for treatment to obtain a surface treated metal substrate; and S3, injection: the surface of the surface treated metal substrate is injected with a resin composition, and then the metal resin complex is obtained after molding. In the metal resin complex, the binding force between metal and resin is strong, and the process is simple, is easy for large-scale production, and has no pollution.

Provided are stainless steel-resin composite and method of preparing the same. The method comprises steps of: providing a stainless steel substrate; spraying aluminum particles onto a first surface of the stainless steel substrate via thermal spraying to form an aluminum layer on the first surface of the stainless steel substrate; removing the aluminum layer via dipping the stainless steel substrate into an alkaline solution with a p H value greater than or equal to 10 so as to form a porous surface; and injecting a resin composition onto the porous surface of the stainless steel substrate so as to form a resin layer.

The invention provides a volute fan combined structure which mainly solves the problem how to reduce influences of volutes of adjacent volute fans on air outflow in an air supply device provided with the adjacent volute fans. The structure comprises an installation plate and at least two adjacent volute fans installed on the installation plate. One of the two adjacent volute fans is provided with a middle air outlet located between the two adjacent volute fans, and compared with the other volute fan, the volute fan provided with the middle air outlet is located in front in the front-back direction perpendicular to the installation plate. The second volute fan, the first volute fan and the third volute fan are arranged on the installation plate in a staggered mode so that an air outlet of the second volute fan, the first volute fan and the second volute fan can be staggered, and interference is reduced. The invention further aims at providing a vertical air conditioner.

The invention discloses a branch well window sealing method for sealing branch well windows of oil and water wells. The method is implemented through a sealing device; the device consists of a main borehole under the window, a branch borehole and a main borehole above the window; the sealing device is made of a material which has certain elasticity, can expand and can recover deformation, and the sealing device is molded by die casting or tube welding; after the sealing device and a running tool are dropped to the branch well window, the sealing device is firstly expanded by hydraulic pressure, and simultaneously a drilling tool is dropped to make the sealing device descend till to the designed position; after the sealing device is completely expanded, a feeding pipe column is pressed down to shear a connecting dowel between the running tool and the sealing device so that the running tool and the sealing device are separated; the feeding pipe column and the running tool are extracted from the well; and an expanding tool is dropped to push an expanding cone by using hydraulic pressure to expand the sealing device so that the sealing device is expanded to the inner wall of a sleeve at the other window to be fully jointed and the communication between two branches are ensured. The method solves the problem that the window has no mechanical seal in the prior art. The method can be used for the sealing operation for the branch wells of the oil and water wells.

The invention provides an abnormal lamp bead positioning method and device and a storage medium. The abnormal lamp bead positioning method comprises the steps of respectively acquiring images, corresponding to an R channel, a G channel and a B channel, of a display screen image after a display screen is electrified; for the image corresponding to each channel in the RGB three channels, executing the following operations: extracting the gray features of each row of pixels and the gray features of each column of pixels in the image; determining a row gap between two adjacent rows of lamp beads in the image according to the gray features of each row of pixels in the image, and determining a column gap between two adjacent columns of lamp beads in the image according to the gray features of each column of pixels in the image; removing a row gap between two adjacent rows of lamp beads and a column gap between two adjacent columns of lamp beads in the image; and binarizing the image without the row gap and the column gap, analyzing a connected region in the image after binarization processing, and determining the position of an abnormal lamp bead in the display screen image according to the analyzed connected region.

The invention provides a semiconductor device and a forming method thereof. The method includes providing a material layer to be etched, wherein the material layer to be etched is provided with a toplayer mask layer; forming a first opening running through the top layer mask layer in the top layer mask layer, the sidewall material of the first opening having a first density; performing a first surface treatment process on the sidewall of the first opening such that the sidewall material of the first opening has a second density, the second density being greater than the first density; performing an intermediate patterning process after the first surface treatment process; and after performing the intermediate patterning process, forming a second opening running through the top layer masklayer in the top layer mask layer, the second opening and the first opening being separated from each other. The method improves the performance of the semiconductor device.

The invention discloses a spiral groove shell used for improving the cavitation performance of an inducer. The spiral groove shell comprises an upstream pipeline, a pump shell, a sleeve, spiral grooves and the inducer. The spiral grooves are installed at an inlet of the inducer, and the turning direction of the spiral grooves is opposite to that of the inducer. The sleeve is used for fixing the positions of the spiral grooves. When the inducer works, backflow of blade tip clearances is enhanced due to the existence of the spiral grooves, and the spiral grooves work on fluid at the same time, so that life of the inducer remains unchanged or is increased slightly.

The invention discloses a hydroxyapatite nanoparticle radionuclide marked product and a preparation method thereof. The hydroxyapatite nanoparticle radionuclide marked product may be prepared by a method comprising: a, performing the amination surface modification of hydroxyapatite nanoparticles by using silane coupling agent; b, preparing a 125I-BH maker; and c, connecting the 125I-BH maker and the modified hydroxyapatite nanoparticles. In the invention, the 125I radionuclide with high chemical activity is used, and the 125I radionuclide has a proper radioactive half-life of 60 days. The 125I marked product obtained by the marking method is stable and can be used in researches on the in-vivo development and distribution of the hydroxyapatite nanoparticles.

The invention discloses a surface treatment process of a high-quality-surface stainless steel workpiece. The surface treatment process of the high-quality-surface stainless steel workpiece comprises the following steps: mechanically polishing the surface of a stainless steel workpiece at first, and then carrying out oil removal treatment on the surface; washing the stainless steel surface with water after oil of the surface is removed, and then carrying out pickling; washing the surface of the stainless steel workpiece with water after pickling; adding the washed stainless steel workpiece in an oscillating mill, and adding a grinding material and grinding fluid; cleaning the surface of the ground stainless steel workpiece by using a grinding fluid cleaning agent; and feeding the treated stainless steel workpiece in a temper mill, and carrying out surface roughness homogenized finishing treatment to obtain the high-quality-surface stainless steel workpiece. The surface of the stainless steel workpiece treated by the method is glossy, roughness is greatly reduced, rust resistance is good, and a treating agent used in a treating process is environmentally friendly and non-toxic, and is harmless to the environment.

The invention discloses an in-situ self-assembled slapper ignition component and a preparation method thereof. Specifically, the in-situ self-assembled slapper ignition component comprises a pin equipped alumina ceramic substrate, a metal copper exploding foil, a Parylene C slapper layer, a photoresist structural layer and an acceleration chamber. The metal copper exploding foil is disposed on the alumina ceramic substrate, the Parylene C slapper layer is arranged on the metal copper exploding foil, the photoresist structural layer is disposed on the Parylene C slapper layer, and the acceleration chamber is disposed in the photoresist structural layer. The component provided by the invention has the characteristics of self-assembly and flexibility, and can meet the production needs of various slapper ignition components with different specifications. According to the invention, photoresist is applied to preparation of the acceleration chamber and tempering modification treatment thereon so as to further strengthen the mechanical properties. Thus, the acceleration chamber can effectively shear slappers.

The invention relates to the field of ventilation and fire prevention in track transport, in particular to a fume exhaust layout structure for subway platform and screen door system. The structure is characterized in that a fume exhaust is arranged at a side of a heat exhaust chamber close to the waiting platform, and the fume exhaust is connected with a control valve. The structure of the invention has the following advantages: the arranged fume exhaust or fume exhaust pipe helps to exhaust the fume of the platform zone inside the screen door, to form the fume exhaust way which combines even fume exhaust of initial vent pipes of the station and concentrated fume exhaust of heat exhaust fans. In this way, the normal fume exhaust requirement of the platform is satisfied, and the requirement of wind speed of 1.5m/s of stairway is also satisfied; the scale of the station is not significantly affected, and the fume is limited in the waiting zone of the station, so that the diffusion range of fume is not increased, and the secondary damage possibly caused by opening the screen door is avoided.

The present invention provides a coating tool, comprising a coating head (10) having a plurality of head members (16) and (18), wherein a groove-like slot (14) opened to the tip of the coating head (10) is demarcated between the side faces (17) and (19) of the plurality of head members (16) and (18) opposed to each other, and coating solution is jetted from the tip of the coating head (10) through the slot (14). The coating tool is characterized in that the materials of the head members (16) and (18) is a titanium alloy, and that the slot faces (17) and (19) demarcating the slot are formed of a material harder than the titanium alloy.

The invention discloses a chemical polishing solution and a preparation method thereof and a method for chemically polishing Kovar parts. The chemical polishing solution comprises the following components in parts by volume: 300+/-10 parts of nitric acid, 5+/-0.2 parts of hydrochloric acid and 700+/-15 parts of acetic acid. The method for chemically polishing Kovar parts comprises the following steps of: removing oil of Kovar parts, acid pickling, chemical polishing solution and drying. An aluminum substrate is subjected to oil removal and acid pickling, and the Kovar parts are chemically polished; moreover, the time and labor are saved, the finish degree of the surface of the Kovar parts is greatly improved, burrs are completely removed, and the influence on the size of the Kovar parts is small.