182 results about "Beryllium copper" patented technology

The invention relates to the technical field of micro-robots, in particular to a novel piezoelectric three-legged jumping type robot and a control method thereof.The method includes the steps that a base of the robot is machined on beryllium copper through a laser cutting method, and then a piezoelectric ceramic piece is pasted on the base of the robot through epoxy resin glue; and finally, the piezoelectric driving legs are bent to obtain the appearance of the robot. And then a driving circuit and a lithium battery are connected, so that the motion mode of the robot can be controlled. Specifically, by changing a piezoelectric ceramic piece at the top of a body and applying voltages in different directions to piezoelectric driving legs, the piezoelectric driving legs continuously generate contraction and extension deformation, movement of the piezoelectric robot is achieved, and by applying voltages to different legs, displacement in a specific direction can be achieved. The piezoelectric ceramic piece on the top of the body can play a role in amplifying displacement of a single leg, and the robot can jump by applying voltage to the three legs and the ceramic piece on the top at the same time.

The invention discloses beryllium copper plate calendaring forming equipment, and relates to the technical field of beryllium copper plate manufacturing, and the beryllium copper plate calendaring forming equipment comprises a rack, a transmission assembly, a cleaning assembly and a driving guide assembly. A multi-layer composite calendering roller structure is adopted, an outer tungsten carbide wear-resisting layer is matched with a middle copper-aluminum alloy heat conduction layer and a 42CrMo alloy steel support layer, a dynamic temperature control system is formed under the synergistic effect of a spiral heating channel, a spiral cooling channel, a microwave heating tank and a liquid nitrogen cooling tank, the forming precision and the material performance are remarkably improved, and the service life of the calendering roller is prolonged. A transmission assembly, an automatic cleaning assembly on the inner wall of the rack and driving guide assemblies at the two ends are externally arranged, the rolling stability is guaranteed, the position of the beryllium copper plate can be adjusted in real time, the intelligent control platform integrates the multispectral monitoring and touch control adjusting functions, closed-loop optimization of thermal parameters is achieved through a temperature control unit, and the working efficiency is improved. And therefore, the equipment has high-efficiency forming, intelligent monitoring and process self-adaptive capabilities in the machining process.

The utility model discloses a flat opening type threshold-free electric shielding door, and relates to the technical field of shielding doors. Comprising a main door body connected with a door frame through hinges, and a first driving mechanism used for driving the main door body to rotate is arranged on the main door body; the auxiliary door body is mounted on the main door body and is in sliding fit with the main door body in the vertical direction; the movable shielding body is mounted on the auxiliary door body and is in sliding fit with the auxiliary door body in the horizontal direction; the second driving mechanism is mounted on the auxiliary door body and is used for driving the auxiliary door body to lift and driving the movable shielding body to translate; the guide rail is arranged in a door groove in the front side of the door frame; and the moving trolley is in sliding fit with the guide rail, and in the door opening state, the moving trolley slides to the front of the door frame to fill and level up the door groove. The requirement for transferring large equipment is met through the threshold-free design, and meanwhile the beryllium copper reeds can be prevented from being damaged.

The invention provides a method for improving the electric conductivity of C17460 beryllium copper, and belongs to the technical field of beryllium copper alloy treatment.The method comprises the steps that electrolytic copper, nickel and zirconium are laid in a vacuum melting furnace to be sequentially subjected to vacuum melting, refining and casting in a graphite mold to be solidified, and a copper-nickel-zirconium alloy is obtained; the method comprises the following steps: smelting electrolytic copper, a copper-nickel-zirconium alloy, a beryllium-copper master alloy and nickel in a non-vacuum smelting furnace, and then casting and cooling in sequence to obtain a C17460 beryllium-copper cast ingot; sequentially carrying out primary hot rolling, double-sided milling and rough rolling on the cast ingot; the strip is sequentially subjected to edge cutting, primary cleaning and brushing grinding, primary solution treatment, secondary cleaning and brushing grinding, primary finish rolling, secondary solution treatment, tertiary cleaning and brushing grinding, secondary finish rolling, primary cleaning, primary withdrawal and straightening, graded aging, secondary cleaning, secondary withdrawal and straightening and slitting. On the basis of keeping the original excellent mechanical properties of C17460 beryllium copper, the conductivity of the beryllium copper is improved, the production difficulty is low, and the cost is low.

The present invention relates to the technical field of smelting furnace devices, and particularly relates to a beryllium copper aluminum alloy smelting furnace, which includes a base; a smelting furnace assembly that can be rotated to a non-vertical state with respect to the base; an upper cover assembly that is arranged on one side of the smelting furnace assembly and can be rotated to the upper end face of the smelting furnace assembly to cover the upper end face of the smelting furnace assembly; a feeding assembly that is arranged on the other side of the smelting furnace assembly and can be rotated to the upper end of the smelting furnace assembly to add raw materials into the smelting furnace assembly; a first rotating motor is located on the same side as the feeding assembly, and its output shaft is connected to the first lifting cylinder. A cleaning motor is connected to the piston rod of the first lifting cylinder through a first connecting rod, and a cleaning brush is connected to the output shaft of the cleaning motor through the connecting plate. By adding raw materials into the smelting furnace assembly through the feeding assembly, the present invention avoids the danger generated when manually adding materials directly.

The invention discloses a high-frequency transformer sound pressure calculation method, and relates to the technical field of circuits, and the method comprises the steps: obtaining a microstructure parameter of a gap beryllium copper reed to generate a microstructure feature vector; on the basis of the microstructure feature vector, calculating magnetostriction strain of microstructure regulation and control to determine coupling field distribution description of microstructure regulation and control magnetostriction; on the basis of the coupling field distribution description, performing finite element grid division on an air domain around the high-frequency transformer to generate an air domain finite element grid; enabling a gap beryllium copper reed to be equivalent to an acoustic impedance boundary condition, and defining a pseudo-density variable in an air domain finite element grid to determine the optimal sound wave propagation path tracking in the air domain; and calculating the sound pressure of the high-frequency transformer based on the tracked sound wave propagation path. According to the method, the feature vectors are generated by obtaining the structure parameters, the magnetostrictive strain is accurately calculated, grid division is optimized, the calculation precision is improved based on boundary condition processing and multi-link cooperation, and a reliable basis is provided for product design.

The utility model discloses a push-pull type threshold-free electric shielding door, and relates to the technical field of shielding doors. Comprising a double-layer door body which comprises a main door body and a movable shielding body, and the main door body is provided with a driving mechanism used for driving the movable shielding body to move horizontally in the direction perpendicular to the main door body; the push-pull guide rail is arranged above the double-layer door body, and the top of the main door body is in sliding fit with the push-pull guide rail through a roller mechanism; the supporting guide device is parallel to the push-pull guide rail and located below the main door body, and a guide rod in sliding fit with the supporting guide device is arranged at the bottom of the main door body; the moving trolley is connected with the bottom of the main door body and slides along the supporting and guiding device along with the main door body, and the moving trolley moves into the door groove in the front side of the door frame in the door opening state. The utility model can solve the problem that the beryllium copper reed has great unnecessary wear and is difficult to replace.

The invention relates to a copper-aluminum-based anti-electromagnetic interference cable conductor with a multilayer composite shielding structure, which comprises a conductor core layer, and is characterized in that the conductor core layer comprises a central bearing core and an inner conductor, the central bearing core is formed by twisting aramid fibers and galvanized steel wires, the inner conductor sleeves the outer side of the central bearing core, and the inner conductor comprises three layers of aluminum alloy wires; the three layers of aluminum alloy wires are alternately and reversely twisted, the sliding nesting layer is arranged on the outer side of the inner-layer conductor in a sleeving mode, six copper-aluminum composite half pipes are spliced to form a complete circular ring, T-shaped sliding grooves are formed in the splicing positions of the adjacent copper-aluminum composite half pipes, two conductive sliding blocks are arranged in the T-shaped sliding grooves, the conductive sliding blocks are made of beryllium copper elastomer materials, and the heads of the conductive sliding blocks are provided with gold-plated heads. And the outer conductor sleeves the outer side of the sliding nesting layer and is formed by bunch-stranding annealed soft copper wires in the same direction. According to the invention, excellent bending resistance of the cable is realized, wire breakage of the conductor can be avoided under a repeated bending condition, a conductive path of the conductor core layer is kept continuous and stable in the whole process, and interruption of electric energy or signal transmission caused by bending is prevented.

The invention provides a protection device for communication equipment, and belongs to the technical field of communication equipment protection, the protection device comprises a protection shell, the upper end of the protection shell is provided with a sealing block, the protection device is characterized in that the lower end in the protection shell is provided with a bearing block, and the bearing block is fixedly connected with the lower wall of the protection shell through a fourth spiral beryllium copper wire; an adjusting unit is installed on the side wall of the protective shell, a through opening is reserved in the sealing block, a fifth connecting block is arranged in the through opening in the sealing block in a lifting and moving mode, the fifth connecting block comprises a third linkage block and a fifth attaching block, and the third linkage block is fixedly connected with the fifth attaching block through a fifth spiral beryllium copper wire. The protection device solves the problems that an existing protection device for the communication equipment is inconvenient to fully protect the outer wall surface of the communication equipment when the communication equipment is impacted by an external force, so that the communication equipment is easily damaged, and the communication equipment is inconvenient to detach in the stage of sticking and extruding the communication equipment due to the impacted external force; and the protection efficiency of the communication equipment is reduced.

The invention discloses a small-diameter beryllium copper microwire for an aviation electric connector and a preparation method of the small-diameter beryllium copper microwire, and belongs to the technical field of beryllium copper alloy. The small-diameter beryllium copper microwire is manufactured through the working procedures of homogenizing annealing, extrusion, hot rolling, annealing, primary acid pickling, stretching, secondary acid pickling, bright continuous solid solution, multi-mode stretching and the like, an oxidation film on the surface of the beryllium copper microwire is eliminated through the acid pickling and bright continuous solid solution working procedures, and the surface quality of the beryllium copper microwire is remarkably improved; the beryllium copper microwire subjected to finished product stretching is bright in surface, free of cracks, scratches and other surface defects and stable in mechanical property, the hard tensile strength of the beryllium copper microwire can reach 1100 MPa or above, and the product consistency is good.

The present invention discloses a multi-channel low-error RF strip coupling position detection method and system, the method comprising: connecting multiple RF strip coupling probes of a measurement system through a beryllium copper conductor to excite the RF signal, each RF strip coupling probe connection can excite the generation of four groups of RF signals, the four groups of RF signals are sent to their respective RF front ends to achieve filtering, gain adjustment, and down-conversion, the down-converted signal is an intermediate frequency signal, and is sent to an AD data collector, the AD data collector works under the drive of a synchronous clock separated from a signal source, and ensures that all the system acquisitions are phase referenced acquisitions. According to the principle of electromagnetic induction, a RF strip coupling probe is used to couple four RF signals, and accurate signal amplitude and phase information are extracted from the four RF signals to accurately obtain the position of the strip electrode relative to the beryllium copper wire, and then the deformation information of the connected low-temperature cavity to be measured is inverted.

The present invention belongs to the technical field of metal material manufacturing, and specifically relates to a method for efficiently preparing beryllium copper master alloy. The preparation method is to mix BeO powder and flake graphite powder evenly, and obtain beryllium copper master alloy ingot after vacuum melting and vacuum casting with electrolytic copper plate, and then the beryllium copper master alloy ingot is subjected to vacuum consumable melting to obtain beryllium copper master alloy. The present invention can avoid the harm caused to human body and environment by beryllium-containing dust and smoke generated in the production process, and can significantly reduce the oxygen, other gas content and inclusion content of the beryllium copper master alloy. The present invention has short process flow, high production efficiency and large output, and can produce beryllium copper master alloy of 1.5T-3.2T weight at one time, and the beryllium copper product has high quality and is easy to industrialize.

The invention discloses a high-power microwave transmission line rotary joint, and relates to the field of high-power microwave conduction, an output shaft and an input shaft which are coaxially connected are adopted, and an insertion connection structure is designed and comprises insertion ports with different diameters, bushings, O-shaped sealing rings and the like, so that the stability and the coaxiality of shaft connection are enhanced, and the signal loss is reduced; the joint copper ring and the joint beryllium copper are selected as conduction parts, and good conductivity of the joint copper ring and the joint beryllium copper is utilized, so that resistance heat loss is reduced, and signal transmission efficiency is improved; meanwhile, by means of the design of the joint conductive contact finger and the hook-shaped or conical beryllium copper, guiding and positioning of assembly are optimized, convenience and accuracy of assembly are improved, perfect sealing protection measures are further arranged, a series of problems existing in the prior art are effectively solved, and the service life of the connector is prolonged. And a more reliable and efficient rotary joint solution is provided for high-power microwave transmission.

The utility model provides a double-layer large-ring injection mold, which relates to the field of injection molding and comprises a front mold structure and a rear mold structure which form an integral injection mold and are used for demolding a product, the lower mold insert consists of a head rubber position and an iron part and is used for rapidly cooling a product; the rear mold thread structure is arranged between the front mold structure and the rear mold structure, so that the product can be left in the rear mold structure; and a parting surface assembly. The opening sequence of the parting surfaces is controlled through the nylon opening and closing device of the parting surface IV, the parting surface I is firstly opened to separate the runner part from the product, and then the parting surface II is opened to separate the front mold insert from the product, so that the wrapping force of the front mold on the product and the deformation of the product are reduced. When the rear mold is demolded, the beryllium copper material at the head glue position of the lower mold insert can quickly cool a product, so that the strength of the product during demolding is enhanced, the problem of ejection deformation caused by incomplete cooling of the product is reduced, and the dimensional accuracy and the appearance quality of the product are effectively ensured.

The utility model discloses a beryllium copper reed with a positioning function, and relates to the field of beryllium copper reeds, the beryllium copper reed comprises a fixing plate, an arc angle, a positioning hook, a limiting plate, a positioning hook and a limiting plate, an elastic plate is of a structure shaped like a Chinese character'chang ', the top of the elastic plate is parallel to the fixing plate in an initial state, the positioning hook is slidably arranged in a limiting groove, and the limiting plate is arranged in the arc angle. One end of the elastic plate is pressed to deform, so that the positioning hook slides up and down in the limiting position, and positioning of the elastic plate is achieved. The positioning hook and the limiting plate are arranged at one end of the elastic plate and one end of the fixing plate respectively, the positioning hook is in sliding connection with the limiting groove formed in the limiting plate, and therefore the positioning hook is limited in the limiting groove, and one end of the elastic plate deforms along with the movement path of the positioning hook. And the elastic plate and the fixed plate are always in an up-and-down correspondence relationship, so that position deviation caused by deformation of the elastic plate is effectively avoided, the elastic plate reaches a preset position when not or elastically reset, and the stability of the reed is greatly improved.

The present invention provides a docking device for an insulator zero value tester, belonging to the technical field of insulator zero value testers. A main unit and an insulating rod, and the insulating rod and the main unit are connected via a docking piece; the docking piece includes a docking platform fixedly connected to the bottom of the main unit, a docking column screwed to the insulating rod, and a groove reserved on the docking platform. The docking piece also includes: a pair of stop platforms movably arranged in groove A; a traction platform 1 movably arranged in groove B; a fastening unit further includes a restraining rod, a right-angle piece, and a spiral beryllium copper wire B, the right-angle piece including a vertical end and a horizontal end. The present invention solves the problem that the main unit and the insulating rod of the existing insulator zero value tester are connected by bolts, and the bolts need to be repeatedly twisted during assembly and disassembly, which is time-consuming and labor-intensive, reduces detection efficiency, and the repeated twisting may cause the bolts to slip, thereby causing the tester to be unable to be used normally, greatly reducing its service life.

The utility model relates to the technical field of reed switches, in particular to a stable and reliable high-voltage-resistant high-power multi-point contact type reed switch. The stable and reliable high-voltage-resistant high-power multi-point contact type reed switch comprises a glass tube, a moving plate fixing rod, a beryllium copper straight elastic piece, a silver contact point, a riveting bolt, a contact point contact piece, a contact lower straight elastic piece and a fixing piece, the glass tube serves as a main body of the reed switch and is of a tubular structure, the glass tube is in a closed state, and the moving plate fixing rod and the silver contact point are fixed through the fixing piece. The glass tube is filled with inert gas, one end of the moving plate fixing rod is fixed to the left side in the glass tube, the fixing plate is fixedly installed on the right side in the glass tube, and the copper-plated straight elastic piece is installed at the right end of the moving plate fixing rod through a riveting bolt. The multi-point contact design of the silver contact point and the contact lower straight elastic sheet and the contact point contact sheet and the fixed sheet is adopted, a stable conduction circuit is formed under the action of a magnetic field, the contact reliability of the reed switch under various working conditions is greatly improved, and the risk of poor contact or open circuit is reduced.

The invention discloses an electrolyte containing ammonium hydrogen fluoride, which takes pure water as a solvent, and each liter of the electrolyte contains 6.1 to 10.3 g of ammonium hydrogen fluoride, 2.2 to 4.2 g of ammonium fluoride, 2.9 to 4.9 g of sodium fluoride and 0.22 to 0.42 g of 2, 5, 8, 11-tetramethyl-6-dodecyne-5, 8-diol; the method is used for treating the beryllium copper surface and comprises the following steps: (1) putting the electrolyte containing ammonium hydrogen fluoride into an electrolytic bath of electrolysis equipment; (2) putting a beryllium copper piece to be treated into the electrolyte in the step (1) as an anode, taking a stainless steel plate as a cathode, and electrolyzing under the action of direct current; (3) the beryllium copper piece subjected to electrolysis treatment is washed with pure water, and then the beryllium copper piece is placed in electroplating liquid for nickel plating; and (4) the beryllium copper piece subjected to nickel plating treatment is washed with pure water and dried to remove surface moisture, and the beryllium copper piece subjected to surface treatment is obtained. The method is safe and reliable to operate, clean and environment-friendly.

The utility model discloses a projection welding device for a nut plate and a plate electrode, which belongs to the technical field of projection welding electrodes, and comprises a nut electrode holder and a nut electrode cover, and a conical compression spring and a KCF positioning pin are arranged in the nut electrode holder and the nut electrode cover. According to the utility model, through differentiated electrode structure design, one side of a thinner welding workpiece is contacted by a smaller electrode, and one side of a thicker welding workpiece is contacted by a larger electrode, so that current can be concentrated on the thin plate side as required, accurate deviation of nuggets is realized, the welding precision is improved, and the production efficiency is improved. Meanwhile, the depth of fusion and nugget at the projection welding spot of the workpiece are obviously increased due to the increase of the current density and the concentration of heat, and the welding strength and reliability are enhanced; the electrode material is changed on the basis of changing the electrode structure, and the beryllium copper electrode with larger resistance is adopted on one side of the thin plate, so that the welding heat on the side of the thin plate is increased.

The utility model provides a water supply pipeline for beryllium copper wire production, and relates to the technical field of beryllium copper wire production. The water supply pipeline for beryllium copper wire production comprises a water supply main pipe, a collecting part used for recycling water and a filtering part used for removing impurities. The collecting component comprises a plurality of flow dividing pipes evenly arranged on one side of the water supply main pipe, a collecting hopper arranged below the flow dividing pipes, a coiled pipe connected with the bottom of the collecting hopper, a water tank connected with the bottom of the coiled pipe and a semiconductor refrigerator connected with one side of the coiled pipe. The problems that when an existing beryllium copper wire production water supply pipeline supplies water, a wire drawing wheel body can be cooled, but cooled water is prone to being wasted, cyclic utilization of water resources is not convenient, waste of the water resources is prone to being caused, impurities are prone to being wrapped in cooling water, the wire drawing wheel body is prone to being polluted, and then practicability is insufficient are solved.

The utility model discloses a loudspeaker single body with a beryllium copper elastic sheet, which comprises a basin frame, U iron is arranged on the basin frame, a magnet is arranged on the U iron, a washer is arranged on the magnet, a voice coil is arranged outside the magnet and the washer, the voice coil is positioned in the basin frame, a vibrating diaphragm is arranged at the top of the basin frame, and the vibrating diaphragm is positioned in the basin frame. The bottom of the voice coil is provided with a metal elastic sheet, and the metal elastic sheet is made of beryllium copper alloy. According to the loudspeaker monomer with the beryllium copper elastic sheet, the conductivity and the rigidity of the metal elastic sheet can be ensured, and the acoustic quality of the loudspeaker monomer cannot be influenced.

A fluid material analysis and detection device comprises a Brinell fluid detector body, and a calibration beryllium copper spring of the Brinell fluid detector body is sleeved with a corrugated pipe; auxiliary fixing structures are uniformly arranged in the middle of the stabilizing bracket; a positioning clamping block is arranged on the outer wall of a main shaft of the rotor, the rotor is one of a common rotor and a Newtonian fluid test rotor, and clamping grooves matched with the positioning clamping block are formed in the tops of the inner walls of the common rotor and the Newtonian fluid test rotor; and the positioning clamping block is fixedly connected with the clamping groove of the common rotor or the clamping groove of the Newtonian fluid test rotor through a vertically arranged fixing bolt. The problem that in the prior art, when a fluid material analysis and detection device is used for detecting non-Newtonian fluid, the detection error is large is solved.

The utility model discloses an electromagnetic shielding special door, and relates to the technical field of special doors. The electromagnetic shielding special door comprises a bearing type lower threshold, a door frame is fixedly connected to the upper end of the bearing type lower threshold, two door leaves are arranged on the front side of the door frame, an electromagnetic shielding assembly comprises an electromagnetic shielding strip, and electromagnetic shielding beryllium copper spring pieces are fixed to the periphery of the door frame through rivets; monel wire sealing strips are fixedly connected to the upper sides and the lower sides of the two door leaves and the corresponding sides, close to the door frame, of the two door leaves, slotting tool type folded edges are arranged on the peripheries of the door leaves, and electromagnetic shielding strips, electromagnetic shielding beryllium copper spring pieces, the monel wire sealing strips, the door frame and the shielding chamber are fixed through electric welding. After being fixed, the electromagnetic shielding strip covers the gap between the outdoor side door frame and the shielding room steel stand column, the graphite conductive adhesive is filled in the indoor side gap, and through the design of multiple electromagnetic shielding structures, the electromagnetic energy is effectively shielded, and the electromagnetic environment safety of places such as a cabinet and a shielding room is ensured.

The utility model provides an anti-static device for a computer mainboard interface with a plastic shell. The anti-static device aims at solving the problems that in the prior art, due to the fact that the anti-static design of an ESD or TVS tube is usually adopted, the service life is short, the anti-static performance is poor, and certain interference is caused to a mainboard. The anti-static device comprises a computer mainboard, a computer mainboard interface, a conductive aluminum block and a beryllium copper elastic sheet, the computer mainboard interface is installed on the computer mainboard, the conductive aluminum block is fixedly connected to the upper portion of the computer mainboard interface, and the beryllium copper elastic piece is installed at the top end of the computer mainboard interface and located below the conductive aluminum block. A body of the conductive aluminum block is provided with a plurality of screw holes which are used for fixing a wire and guiding generated electrostatic current to the ground. The conductive aluminum block and the beryllium copper elastic pieces are installed on the interface, generated static electricity can be collected and led out to be grounded, the anti-static performance is good, and the adaptive service life is long.

The application provides an extremely low temperature regulating needle valve, and belongs to the technical field of low temperature valves. The extremely low temperature regulating needle valve comprises a needle valve, a transport channel one reserved on the needle valve, a connecting block connected to the transport channel one, a pair of ring blocks movably arranged in the connecting block, helical beryllium copper wires fixed to two ends of the ring blocks, a through hole reserved on the ring blocks, a receiving opening reserved at one end of the ring blocks close to the outside of the connecting block, and a flow guide channel one arranged at the upper end of the receiving opening. The application solves the problem that the existing extremely low temperature regulating needle valve is easy to cause the volume of the transport channel two to increase or decrease due to temperature factors during the stage of connecting the transport channel two to transport fluid, so that a gap is generated between the transport channel two and the receiving opening, and the fluid transport efficiency of the extremely low temperature regulating needle valve and the transport channel two is reduced.

The present invention relates to a contactor (2) for high current connection, comprising an elastic support member (6) made of a conductive and elastic alloy material such as beryllium copper, wherein the elastic support member (6) has an elastic connection piece matrix assembly (14) configured on the entire contact bottom side by means of matrix X-axis and Y-axis processing by arranging elastic connection pieces (10) in a matrix on the entire contact bottom side, the elastic connection pieces (10) being heat treated so as to have elastic durability and each being provided with an elastic leg part (10a) integrally extending from a base part (8) in an inclined direction or in the shape of 'ㄹ', and an elastic contact foot part (10b) on the front end of the elastic leg part (10a).

The invention discloses a cushion block composite layer for a semiconductor, a preparation method and a cushion block, the cushion block composite layer sequentially comprises a composite coating and a surface microstructure from a substrate close to beryllium copper to a position far away from the substrate, and the composite coating sequentially comprises a chromium transition layer, an alpha-diamond-like carbon layer and a self-lubricating layer doped with tungsten disulfide from a position close to the substrate to a position far away from the substrate. Hard metal carbide reinforced phase crystal grains are uniformly distributed in the alpha-diamond-like carbon layer; the surface micro-texture comprises a plurality of pits, and each pit is filled with a nano-particle solid lubricant; through the structure, the cushion block is compatible with the high process temperature, an additional cooling device is not needed, and the interface shear stress of the composite layer is reduced, so that the copper powder falling amount is greatly reduced, the hardness, the wear-resisting life, the wear-resisting particle penetrability and the high recognition accuracy of the cushion block are greatly improved, and the low friction coefficient of the surface is maintained; and the roughness is still kept at a lower level after the lead frame is carried for multiple times.

The alternating current and direct current two-gear adjustable miniature pressure switch disclosed by the invention can work in a state that direct current is 75V and 2A or alternating current is 240V and 15A. The steam cup comprises a steam cup, a sealing ring, a film sheet, a high-voltage elastic sheet, an elastic sheet butterfly ring, a low-voltage elastic sheet, an elastic sheet combination seat, a push rod, a static contact insertion sheet, a movable contact insertion sheet, a beryllium copper sheet, a magnet, an insertion sheet combination seat, an insertion sheet seat gland, a knob, a knob seat, a knob handle and a torsion spring. Two-gear pressure adjustment can be achieved.

The invention provides a detection device for carbon dioxide leakage, and belongs to the technical field of carbon dioxide detection, the detection device comprises a main channel, a detector main body and a connection unit, the main channel is communicated with a gas inlet channel, the upper end of the gas inlet channel is fixedly connected with an assembly disc I, and the detector main body is provided with an assembly disc II connected with the assembly disc I; the connecting unit comprises a transverse opening reserved in the first assembly disc in a mirroring mode, a first spiral beryllium copper wire is arranged between a transverse strip and the transverse opening, a vertical opening communicated with the transverse opening is reserved in the first assembly disc, a vertical strip movably connected with the vertical opening is fixedly connected to the second assembly disc, a wedge-shaped table is arranged in a movable opening, and the upper wall face of the wedge-shaped table is an inclined wall. A stop opening cooperating with the wedge-shaped table is reserved in the vertical strip, and a closing unit is arranged in the air inlet channel. The problems that an existing detection device for carbon dioxide leakage is not convenient to maintain, the detection device which cannot work is not convenient to replace, and the use convenience is low are solved.

This invention proposes an indirect steam heating device resistant to strong acid corrosion, belonging to the field of steam heating technology for strong acid corrosion resistance. Addressing the technical problems of existing strong acid environment heating technologies, such as acid concentration dilution, poor corrosion resistance of ordinary materials, low heating efficiency of plastic materials, and small heat exchange area, this invention provides an indirect steam heating device resistant to strong acid corrosion in strong acid environments. It achieves the technical goals of not diluting the acid concentration, long-term resistance to strong acid corrosion, and efficient increase in the temperature of strong acid solutions. Furthermore, by optimizing the pipeline layout to increase the heat exchange area, it further improves heating efficiency, meeting the requirements for efficient oxide layer removal in beryllium copper strip production.