173results about How to "Uniform wall thickness" patented technology

The invention belongs to the technical field of metal forming machining, and provides a variable-curvature thin-wall micro-channel structure manufacturing process which comprises the steps that a channel is machined in the front face of a raw material plate, a bottom plate is obtained, and the channel is provided with an arc-shaped protruding groove bottom; diffusing and welding a cover plate on the front surface of the bottom plate to cover the bottom plate to obtain a first prefabricated plate; the back face of the first prefabricated plate is machined to enable the bottom of the channel to be provided with a groove with the same shape as the groove bottom of the arc-shaped protrusion, and a second prefabricated plate is obtained; and the second prefabricated plate is pressed by the mold to obtain the variable-curvature thin-wall micro-channel structure. The thin-wall micro-channel structure is split into a combined structure of the cover plate and the bottom plate, and the variable-curvature thin-wall micro-channel structure is obtained by pressing and forming the cover plate and the bottom plate through a mold after the cover plate and the bottom plate are combined. According to the variable-curvature thin-wall micro-channel structure, the channel is formed in the bottom plate, arc compensation is conducted on the channel of the bottom plate by arranging the arc-shaped protruding groove bottoms according to the different curvatures of the bottoms of all the micro-channels of the variable-curvature thin-wall micro-channel structure, it can be guaranteed that the wall thicknesses of the bottoms of the micro-channels are consistent, and cracking in the profiling process is avoided.

The invention provides a four-way pipe fitting multi-direction charging hydraulic forming method and device, and relates to the technical field of pipe fitting forming. The four-way pipe fitting multi-direction charging hydraulic forming method comprises the steps that the diameter of an initial pipe blank and the size of a variable-diameter area of a variable-diameter pipe blank are determined according to the size of a target pipe; internal pressure p1, axial rolling reduction delta 1 and supporting internal pressure p2 are calculated; determining an initial tube blank length; preparing an initial pipe blank; the initial pipe blank is put into an axial charging hydraulic pressing mold for axial pressing, and a variable-diameter pipe blank is obtained; the variable-diameter pipe blank is put into a circumferential charging hydraulic pressing mold for circumferential pressing, and a double-protrusion pipe blank is obtained; and the ends of the protruding parts of the double-protruding pipe blank are removed, and the target pipe is obtained. The forming load is remarkably reduced, the problems that the high-pressure forming pressure in the four-way pipe fitting is high, material supplementing in a middle deformation area is difficult, and the fracture defect is likely to be generated are effectively solved, the situation that branch pipes and a connecting area are thinned and fractured is avoided, and the obtained four-way pipe fitting is uniform in wall thickness, complete in structure and excellent in performance.

The invention provides a composite material winding machine and a winding method, and belongs to the technical field of dry winding, the composite material winding machine comprises an underframe, a clamping mechanism mounted on the underframe, a walking trolley mounted on the underframe, and an angle control mechanism and a tension control mechanism mounted on the walking trolley; the winding angle of the composite material strip is strictly controlled through the angle control mechanism, the tension of the composite material strip is adjusted through the tension control mechanism, it is guaranteed that the tension and the wall thickness are uniform when the composite material strip is wound, and it is guaranteed that a product obtained after winding forming is stable in performance and attractive in appearance.

The invention relates to a die forging forming method for spherical shell type forgings, which belongs to the technical field of forging and comprises the following steps: determining a small strain area of the spherical shell type forgings in the die forging forming process; a mold is manufactured, the mold comprises an upper mold body and a lower mold body, the upper mold body is provided with a cavity matched with the contour of the spherical shell type forge piece, the cavity wall of the cavity comprises a target area, and a groove is formed in the target area; placing the blank on a lower die; the upper die is driven to press downwards, the cavity wall of the cavity is used for extruding the blank so that the blank can be formed into a preformed forge piece, and a protrusion is formed in a small strain area of the preformed forge piece; the upper die is driven to ascend, and the preformed forge piece is driven to rotate on the lower die, so that the protrusions and the grooves are staggered; the upper die is driven to press downwards again, the old protrusion is flattened through the cavity wall of the cavity, and a new protrusion is formed in the small strain area of the preformed forge piece; repeating the two steps for multiple times to obtain a final forge piece with a bulge on the outer surface; and the protrusions on the outer surface of the final forging are removed through machining, and the spherical shell type forging is obtained.

The invention provides a hot-rolled seamless steel pipe and a wall thickness controllable processing technology thereof, and aims to solve the problem that the wall thickness of a steel pipe is difficult to accurately control in the prior art. Real-time monitoring and control over the wall thickness of the steel pipe are achieved, so that the wall thickness precision is remarkably improved, raw material components of the seamless steel pipe comprise C, Si, Mn, P, S, Cr, Mo, Ni and Fe, the wall thickness range of the seamless steel pipe is 5-20 mm, and the preparation technology comprises the steps of raw material proportioning, vacuum smelting, mold cylinder preheating and coating treatment, wall thickness laser measurement, rotating speed regulation and control forming, annealing, forced cooling treatment and the like. Through 300-600 times of high-frequency wall thickness measurement per second, the wall thickness uniformity and precision of the steel pipe in the whole production process are ensured in combination with rotating speed regulation and forced cooling, and finally the product quality and economic benefits are improved.

The invention relates to the technical field of condensers, and discloses a high-efficiency heat exchange condenser system which comprises a mounting box and further comprises a fan arranged at the top of the mounting box, a plurality of heat exchange pipes fixedly connected into the mounting box, a plurality of spraying pipes and a plurality of water storage sleeves. The bottom of the transmission part is meshed with the stress wheel, one side of the stress wheel is attached to the transmission lead screw, the water storage sleeve is used for storing fluid, and the transmission part is impacted by fluid fluctuation, so that the multiple cleaning and scraping parts reciprocate outside the heat exchange pipe. The thickness of a water film formed by spraying water on the outer wall of the heat exchange pipe can be effectively limited through the water storage sleeve, dirt on the outer wall of the heat exchange pipe is treated through synchronous reciprocating movement of the multiple transmission lead screws, the cleanliness of the heat exchange pipe is guaranteed, the thickness of the pipe wall of the heat exchange pipe is uniform, the heat transfer efficiency of the heat exchange pipe is improved, and meanwhile the service life of the heat exchange pipe is prolonged. And the heat exchange effect of the fluid is improved.

The utility model discloses a pipe mold and relates to the technical field of molds. The die comprises a feeding end core die, a discharging end core die, a die fixing sleeve, a discharging opening die, a feeding outer die and a feeding end die plate. The feeding end core mold is sleeved with the feeding outer mold, the feeding end core mold and the feeding outer mold are fixed to the feeding end mold plate through bolts respectively, a feeding port is formed in the side wall of the feeding outer mold, a spiral guide-in groove is formed in the position, below the feeding port, of the outer wall of the feeding end core mold in the direction towards the discharging end, and the spiral guide-in groove is communicated with the feeding end mold plate. The discharging end core mold is fixed to the feeding end core mold through a bolt, the discharging end core mold is sleeved with a discharging opening mold, a mold fixing sleeve is arranged between the discharging opening mold and the feeding outer mold, and the discharging opening mold, the feeding outer mold and the mold fixing sleeve are connected through bolts. Internal pressure is reduced in a spiral feeding mode, meanwhile, the core mold at the feeding end is of a hollow pipe structure, the mass of the core mold is reduced, the consistency of the heating temperature of the inner mold and the heating temperature of the outer mold can be effectively kept, the wall thickness is uniform, the product percent of pass is increased, and the production cost is reduced.

The utility model discloses a stator assembly, a linear motor, a suspension system and a vehicle, the stator assembly comprises a stator core shaft, the stator core shaft comprises a shaft wall, the shaft wall is internally provided with a first cooling water channel, the peripheral wall of the stator core shaft is provided with a positioning groove, and the first cooling water channel is arranged in the positioning groove in the circumferential direction of the stator core shaft. The first cooling water channels and the positioning grooves are arranged at intervals; the stator core is sleeved outside the stator core shaft, the first cooling water channel exchanges heat with the stator core, the inner circumferential wall of the stator core is provided with a positioning protrusion, and the positioning protrusion is located in the positioning groove. According to the utility model, the positions of the first cooling water channels and the positioning grooves in the stator core shaft are arranged more reasonably, the structural strength of the stator core shaft is high, the cooling effect on the stator core is good, and the working performance of the stator assembly can be improved.

The present invention discloses a production method of a seamless titanium thermos cup welded pipe, comprising step a forming and welding; step b scraping and finishing; step c sawing or cold drawing; step d cleaning and annealing, step a forming and welding: the forming roller extrude the titanium strip into shape, the high-frequency induction current rapidly heats the edge of the strip, and the extrusion roller extrude and welds the edge, step b scraping and finishing: the inner and outer scraping knives continuously scrape the weld slag extruded at the weld seam, and the finishing roller extrude and correct the roundness and straightness of the welded pipe, thereby obtaining a high-frequency induction welded titanium pipe, and step c sawing or cold drawing: the high-speed sawing machine follows the fixed length to cut the high-frequency induction welded titanium pipe. The seamless titanium thermos cup welded pipe produced by the present invention is a titanium welded pipe made of high-frequency induction welding, has high dimensional accuracy, good mechanical properties, and a production efficiency 10 times higher than that of seamless pipe making and argon arc welding pipe, realizing a rapid preparation process route of seamless titanium thermos cup pipes directly from raw material strips, greatly reducing production costs.

The utility model discloses a low-voltage contact pin sheath structure, and relates to the technical field of low-voltage board end sockets, the low-voltage contact pin sheath structure comprises a PCB and a low-voltage contact pin protection assembly, the low-voltage contact pin protection assembly is connected to the top of the PCB, the PCB comprises a board body, the end face of the board body is provided with a contact pin mounting hole, four corners of the board body are respectively provided with a positioning hole, and the low-voltage contact pin protection assembly is connected to the bottom of the board body. According to the scheme, the low-voltage contact pin sheath structure is designed, the structural stability and the operation reliability of the board end connector are effectively improved, the rigidity of the contact pins is particularly improved, bending deformation possibly occurring in the using process is prevented, due to the design that the contact pins and the insulator are pre-fixed, the assembling process is simplified, installation is more rapid and convenient, and the cost is reduced. The gap design between the bottom of the insulator and the end face of the PCB prevents overflow of soldering tin, so that equipment damage possibly caused by short circuit is avoided, the fabrication holes ensure uniform wall thickness of the insulator, conditions are provided for forming of a mold, and the key effect on improving the overall quality of products and the machining efficiency is achieved.

The invention relates to the technical field of precision casting, in particular to a method for controlling the wall thickness of a wax mold of a complex hollow single crystal turbine blade and the wax mold. According to the method, ceramic cores are screened by obtaining the profile size of the sections, corresponding to the wall thickness points of the wax mold, of the ceramic cores; then, positioning bosses are matched with positioning holes, the screened ceramic mold cores are placed in a wax mold for positioning, wax is injected into the wax mold, and a blade wax mold is manufactured; detecting the wall thickness of a blade wax mold and the wall thickness of a corresponding casting, and obtaining a wall thickness change value; and finally, according to the wall thickness change value, the maximum value and the minimum value of the wall thickness of each detection point of the wax mold are obtained, so that the wall thickness of the wax mold produced subsequently is accurately controlled, the casting wall thickness out-of-tolerance caused by improper wax mold wall thickness control requirements is avoided, and the casting wall thickness qualification rate is increased. The problem that in the prior art, due to shrinkage of a ceramic core, the wall thickness of a wax mold of the single-crystal turbine working blade cannot meet the process requirement is solved.

The present invention relates to a hot-rolled steel plate for medium-break deep well mining casing, wherein the alloy components are as follows by weight percentage: 0.18-0.25% C, 1.20-1.50% Mn, 0.10-0.30% Si, ≤0.010% P, ≤0.010% S, 0.01-0.06% Als, 1.0-1.40% Cr, 0.40-0.60% Mo, and the remainder is iron and inevitable impurities. The present invention significantly improves the control level of central segregation of oil well casing and improves the internal quality of continuous casting billet by optimizing chemical composition, smelting process, process parameters of continuous casting machine, ensuring the accuracy of fan-shaped segment equipment, increasing the cooling intensity of secondary cooling zone, etc. The central segregation of the steel plate is ≤C1.0, the proportion of equiaxed crystals is 30-40% and the proportion of columnar crystals is 60-70%. It has high concentricity, uniform wall thickness, high dimensional accuracy and high elongation after fracture. The weld metallographic structure of the medium-break deep well welding casing prepared by the full-tube heat treatment process is uniform and the performance reaches the level of the parent material, realizing the optimization of weld performance and having high anti-collapse ability. Its impact toughness and flattening test results are better than those of seamless steel pipes.

The invention relates to the field of degassing membrane materials, and provides a preparation method of a hollow fiber membrane for degassing. In the preparation process, polyolefin is subjected to melt extrusion, a semi-formed product with a hollow inner cavity is formed under the action of cavity forming fluid, and firstly, the semi-formed product is cooled and pre-crystallized in an air cooling mode; then carrying out secondary cooling crystallization in an air blowing cooling mode, and rolling; and then carrying out annealing treatment, cold drawing treatment, hot drawing chambering and heat setting treatment on the hollow fiber membrane, and cooling to obtain the hollow fiber membrane. Wherein the crystallinity of polyolefin is greater than 40%, the melt index is 1-7g / min (Tm + 20 DEG C, 5kg), and the extrusion temperature of a die head is (Tm + 10)-(Tm + 40) DEG C; and the length-diameter ratio of the die head is 2-5. The polyolefin has proper crystallinity and melt index, and has proper die head extrusion temperature and die head length-diameter ratio in the spinning process, so that the thickness of the film is more uniform, the crystallinity is higher, and the film has a uniform pore structure, high tensile strength and better degassing efficiency.

This invention belongs to the field of drilling tool technology, specifically relating to a device for ensuring uniform rubber wall thickness after adhesive injection in a stator with equal wall thickness. The device includes inner and outer spiral positioning heads, a connecting rod, a base, a mandrel, an upper plug, a lower plug, an upper baffle, a lower baffle, a positioning bolt, an upper nut, a first nut, and a second nut. The inner and outer spiral positioning heads are connected to the base via the connecting rod. The inner side of each positioning head has an inner spiral that engages with the threaded surface of the mandrel. The upper plug is fitted onto one end of the mandrel, the upper baffle is fitted onto the mandrel and fixed by the upper nut, and the lower plug is fitted onto the other end of the mandrel. The first nut is threadedly connected to the other end of the mandrel and presses against the lower plug. The lower baffle is threadedly connected to the other end of the mandrel and fixed by the second nut. The positioning bolt passes through the side of the stator housing with equal wall thickness. This device ensures uniform rubber wall thickness after adhesive injection in the stator of a screw drilling tool with equal wall thickness, thus improving the service life of the stator.

The invention relates to the technical field of glass tube machining, in particular to a borosilicate glass tube forming outer diameter precise regulation and control device and a regulation and control method thereof.The borosilicate glass tube forming outer diameter precise regulation and control device comprises a polishing machine body, a polishing assembly, a gas collection assembly and a heat energy conversion assembly, and a supporting piece is arranged on an output shaft of the polishing machine body; a first grinding piece is arranged on one side of the workbench, a second grinding piece is arranged on the other side of the workbench, the gas collection assembly comprises an exhaust groove and a gas suction groove, and the heat energy conversion assembly comprises a heat transfer piece. According to the device, heat of the borosilicate glass tube can be absorbed through the heat energy conversion assembly, so that the first grinding piece and the second grinding piece grind the borosilicate glass tube after the glass tube is cooled to a certain temperature, and the problems that the wall thickness distribution is uneven and the outer wall is not smooth in the standing and cooling process of the borosilicate glass tube are solved.

The present invention discloses a peep piece module and a video laryngoscope peep piece, comprising an arc-shaped pipe fitting and a tongue depressor, wherein the arc-shaped pipe fitting and the tongue depressor are integrally formed and the tongue depressor is connected to the arc-shaped pipe fitting, the distal end of the arc-shaped pipe fitting is an arc-shaped pipe head, the proximal end of the arc-shaped pipe fitting is an arc-shaped pipe tail, the distal end of the tongue depressor is a tongue depressor, the proximal end of the tongue depressor is a tongue tail, the arc-shaped pipe fitting comprises a first pipe wall located on the outside, a second pipe wall located on the inside, a first pipe side wall located on the front side and connected to the first pipe wall and the second pipe wall, and a second pipe side wall located on the rear side and connected to the first pipe wall and the second pipe wall, wherein the first pipe wall, the second pipe wall, the first pipe side wall and the second pipe side wall are enclosed into an arc-shaped tube cavity. The present invention has the advantages of high strength, high precision, convenient intubation, convenient positioning of camera components, high imaging quality, and can prevent halo or reflection.

The invention relates to a receiver dryer barrel, which belongs to the field of automobile air conditioner heat pump systems, and comprises a barrel (1) and a sleeve (2), the barrel (1) is arranged in the sleeve (2), the wall thickness of the barrel (1) is uniform, the barrel (1) is an extrusion molding pipe, the liquid storage and pressure resistance performances are achieved, and the weight of the barrel is reduced; a water outlet (4), a connector (5) and a fixing opening (6) are formed in the outer wall of the barrel (1), the water outlet (4) is provided with a pipeline (10) connected with a condenser pipeline, the connector (5) is provided with a positioning pin (9) which can prevent the barrel (1) and the sleeve (2) from moving relatively, the fixing opening (6) achieves fixation of the receiver-drier, the receiver-drier is integrally of an integrated structure, stability is good, an argon arc welding rear cover plate is adopted for the rear cover portion (8), sealing performance is good, and the receiver-drier is convenient to assemble and disassemble. The positions of the water outlet (4) and the connector (5) are matched with the position of a condenser flow channel, so that the condenser flow channel is convenient to change.

The present invention provides a roller profile for reducing the internal thread of a steel pipe rolled by an Assel unit. An entrance cone area, a shoulder area and a rolling area are sequentially arranged from the entrance side to the exit side of the roller. The entrance cone area consists of a first entrance cone area and a second entrance cone area, wherein the first entrance cone area is located between the second entrance cone area and the entrance end of the roller, wherein the ratio of the length of the first entrance cone area along the roller axis to the length of the second entrance cone area along the roller axis is 7:10, and the entrance cone angle α1 of the first entrance cone area differs from the entrance cone angle α2 of the second entrance cone area by 1°; the ratio of the length of the rolling area along the roller axis to the length of the second entrance cone area along the roller axis is 4:5; the present invention solves the technical problem that the spiral concave-convex phenomenon on the inner surface of a steel pipe affects the appearance of the steel pipe and seriously affects the use by users.

The utility model discloses an ice maker which comprises a pre-cooling water path plate, an evaporator and a spraying water path plate, the evaporator comprises an evaporation pipe and a plurality of ice fingers which are fixedly connected with the evaporation pipe and extend downwards, and the evaporation pipe is clamped between the pre-cooling water path plate and the spraying water path plate; the pre-cooling water path plate is provided with a raw water inlet, a pre-cooling cavity communicated with the raw water inlet and a pre-cooling water outlet communicated with the pre-cooling cavity, and the spraying water path plate is provided with a pre-cooling water inlet communicated with the pre-cooling water outlet, a spraying cavity communicated with the pre-cooling water inlet and a spraying opening communicated with the spraying cavity. The spraying waterway plate is further provided with a through hole for the ice finger to penetrate through, and the spraying openings are arranged around the through hole. The interlayer design of the pre-cooling water path plate, the evaporator and the spraying water path plate can protect the evaporator on one hand, and on the other hand, the cooling capacity of the evaporator can be fully utilized to pre-cool raw water, so that the ice making efficiency is improved.

The utility model discloses a plate spring support which comprises a support body used for connecting a girder and a plate spring body and a limiting assembly, the support body is provided with a side extending plate capable of supporting the bottom wall of the girder, the support body is provided with a first wall and a second wall which are arranged in parallel, and the first wall is perpendicular to the side extending plate and attached to the side wall of the girder. The limiting assembly is installed on the frame body and connected with the girder and the plate spring body. The weight of the support can be reduced while the structural strength is guaranteed, and the dead weight of the whole vehicle is reduced.

The invention relates to a ceramic membrane assembly and a ceramic membrane assembly. The assembly comprises a plurality of ceramic membrane tubes and a plurality of ceramic connecting pieces, the cross section of the ceramic membrane tube is in a regular hexagon shape; a plurality of first runners are arranged in the ceramic membrane tube; the ceramic membrane tubes are divided into at least three membrane tube queues, and all the membrane tube queues are stacked to form a structural body with a hexagonal cross section; the ceramic membrane tubes in the same membrane tube queue are arranged side by side, and the outer wall surfaces of every two adjacent ceramic membrane tubes are attached to each other; every two adjacent membrane tube queues are connected and fixed through a ceramic connecting piece, and the ceramic connecting piece is attached to the outer wall of the adjacent ceramic membrane tube; and a second flow channel is arranged between every two adjacent membrane tube queues, and the second flow channels are communicated with the exterior of the structural body. The assembly is stable in structure and long in service life, the filling mode of the tubular ceramic membrane and the structure of matched parts can be simplified, the structure of the ceramic membrane assembly is optimized, and the cost is reduced.

The application relates to the technical field of pipe extrusion, in particular to a power-saving furnace for seven-hole plum-blossom pipe extrusion forming with adjustable extrusion pipes, which comprises an extrusion furnace for melting materials and a pipe die set coaxially connected to the discharge end of the extrusion furnace, a storage rack is arranged outside the discharge end of the extrusion furnace, and a plurality of pipe die sets with different specifications are arranged for staggered sliding switching; the pipe die set is coaxially composed of an extrusion pipe, a pipe sleeve die and a plurality of pipe hole dies from outside to inside, a central shaft die is sleeved on the central shaft of the extrusion pipe, and a pipe material channel is formed between the extrusion pipe and the plurality of pipe hole dies and the central shaft die; and the plurality of pipe die sets are slidingly clamped on the storage shaft. The application can complete the quick disassembly of old dies and the accurate positioning and installation of new dies by suspending a plurality of pipe die sets with different specifications on the storage rack in a staggered mode; the technical effect that only the screw extrusion function needs to be stopped when plum-blossom pipes with different aperture specifications are replaced, and the extrusion furnace heating function does not need to be stopped is achieved; and the power-saving benefit is realized.

The invention discloses an adjusting device and method suitable for outer circle machining of a thin-wall slender shaft and a machining method, and belongs to the technical field of machining. The adjusting device suitable for machining the outer circle of the thin-wall slender shaft comprises a fixing frame and an adjustable limiting mechanism, when the adjustable limiting mechanism is installed on the fixing frame, the axis of the adjustable limiting mechanism is controlled to be collinear with a second center line of the fixing frame, and when the fixing frame is installed on a machine tool, the second center line of the fixing frame is collinear with the machining axis of the machine tool; furthermore, the adjustable limiting mechanism is provided with limiting assemblies which are symmetrical along the axis of the adjustable limiting mechanism, and the first center line of the inner hole of the thin-wall slender shaft penetrating through the adjustable limiting assemblies can be adjusted to be consistent with the machining axis of the machine tool. According to the adjusting device suitable for machining the outer circle of the thin-wall slender shaft, the first center line of the thin-wall slender shaft can be adjusted to be collinear with the machining axis of a machine tool, the outer circle outline of the machined thin-wall slender shaft is concentric with an inner hole, and the wall thickness difference is eliminated.

The utility model discloses a light-weight plastic bottle which comprises a bottle body, the bottle body is made of PET (polyethylene terephthalate) materials, and the wall thickness of the bottle body is uniform and does not exceed 0.5 mm. The bottle body comprises an upper bottle body, a lower bottle body and a bottle bottom, a first groove is formed between the upper bottle body and the lower bottle body, a bottle opening is formed in the top of the upper bottle body and is in threaded connection with a bottle cap, and a second groove is formed between the lower bottle body and the bottle bottom; and a plurality of first reinforcing ribs which are uniformly distributed at equal angles are arranged on the outer side wall of the bottle bottom. According to the light-weight plastic bottle, the wall thickness of the bottle body is uniform and does not exceed 0.5 mm, the overall weight is effectively reduced, meanwhile, the structural strength and stability of the bottle bottom, the upper bottle body and the lower bottle body are improved through the first reinforcing rib, the second reinforcing rib and the third reinforcing rib, and the sealing ring made of silica gel materials is arranged, so that the sealing effect is good. And the sealing performance between the bottle cap and the upper bottle body is ensured.

The present invention discloses an automatic queen bee base making device and a method for using the same, comprising a cabinet body, a manipulator assembly is mounted on the top surface of the cabinet body, a fixing plate is provided at the working end of the manipulator assembly, a plurality of equidistantly arranged metal fingers are fixed on the bottom surface of the fixing plate, the metal fingers are made of a thermosensitive bimetallic material, the queen base is detachably connected to the outer side of the metal fingers, a water surface depth sensor and a wax liquid depth sensor are penetrated on the fixing plate; the metal fingers made of a thermosensitive bimetallic material are sensitive to changes according to the temperature of a wax tank, the metal fingers are easy to detach from the queen base after shrinking at room temperature, and the success rate of the queen base sticking to the base strip is improved, the wax liquid in the wax tank can be kept at a constant temperature through the temperature control assembly, and the production size of the queen base is guaranteed to reach a uniform specification.

This invention relates to a method for preparing capillary seamless steel tubes, comprising the following sequential steps: S100. Selecting austenitic stainless steel seamless tubes as tube blanks, the outer diameter of the tube blanks being 8mm-15mm, the wall thickness being 0.5mm-1.2mm, and the wall thickness accuracy being ±0.015mm; S200. Using a drawing machine with a long mandrel, cold-drawing the tube blanks from S100, when the deformation compression rate of a single cold drawing is 30%-75%, performing internal and external surface cleaning and solution treatment; repeating the above treatment until a capillary seamless steel tube with an outer diameter of 3.8mm-4.2mm and a wall thickness of 0.125mm-0.3mm is obtained. Drawing the billet; wherein the hardness of the long mandrel is 780HV-860HV, and the diameter accuracy of the long mandrel is ±0.005μm; S300. Using a drawing machine with a moving mandrel, the moving drawing billet obtained in S200 is cold drawn. When the deformation compression rate of a single cold drawing is 30%-75%, the inner and outer surfaces are cleaned and solution treated; repeat the above treatment to obtain a capillary seamless steel tube with an outer diameter of 0.59mm-1mm, a wall thickness of 0.05mm-0.09mm, and a wall thickness accuracy of ±0.003mm; S400. The capillary seamless steel tube obtained in S300 is subjected to external grinding treatment to obtain the final product.

The utility model discloses a tool for measuring a refractory material pipe, which is characterized in that the tool (1) is U-shaped, the inner diameter of the tool (1) is consistent up and down, and the inner wall of the tool (1) can be tightly attached to the inner wall of the refractory material pipe (2). According to the utility model, the U-shaped measuring tool is manufactured to check whether the wall thickness of the refractory material pipe is uniform or not, so that whether the refractory material pipe deviates from the core or not is determined; during use, the distance L from the inner wall of the tool to the outer wall of the refractory material pipe is directly measured, and then whether the wall thickness of the refractory material pipe is uniform or not can be determined by comparing a plurality of data; the tool is simple in structure, convenient, practical, low in cost, high in efficiency, capable of detecting the refractory material pipe anytime and anywhere and suitable for popularization and application.

The invention discloses a method for manufacturing a silver alloy tube target. The manufacturing method is specifically as follows: first, 90 parts of silver ingots and 10 parts of low-melting-point pure metal ingots are placed in an induction melting furnace for primary melting to obtain a silver alloy ingot A; wherein the low-melting-point pure metal ingot is an indium ingot, a tin ingot or a gallium ingot; then, the silver ingot and the silver alloy ingot A are weighed according to a mass ratio of (9-20):1, and placed in an induction melting furnace for secondary melting to obtain a silver alloy ingot B; the silver alloy ingot B is trimmed and hot-forged into a cylindrical ingot blank of a certain size; then, the cylindrical ingot blank is subjected to oblique rolling and perforation operations to obtain a silver alloy rough tube; then, the silver alloy rough tube is subjected to fine rolling, shaping, annealing and straightening operations to obtain a silver alloy tube blank; finally, the silver alloy tube blank is subjected to grinding machine processing to obtain a silver alloy tube target. The process steps are simple and the production efficiency is high. The purity, relative density and grain size of the prepared silver alloy tube target material all meet the use requirements of AMOLED display.

The invention relates to a flywheel device (1, 20) formed from a flywheel ring (2), cages (3, 24), clamping elements (4) and springs (5), sliding shoes (7) being oriented on the flywheel ring (2) and clamping ramps (6) being oriented between two adjacent sliding shoes (9), in each case one sliding shoe (7) being received in one of the cages (9), and in each case one clamping element (4) being received in the other cage (3, 24). Wherein the retainers (3, 24) are guided on both sides (11, 12) of the respective sliding shoe (9), and wherein at least one of the retainers (9) is provided with two projections (13, 14, 25, 26), the invention relates to a sliding shoe (9) having two projections (11, 12) which are arranged axially adjacent to each other, parallel to the axial direction of the flywheel axis (10) and together project from the cage (3, 24) into the holder (9) in the direction of one of the sides (11, 12) of the respective sliding shoe (9).

The invention discloses a plate pre-drawing and dieless mirror image loading composite forming process and a product, and belongs to the technical field of metal component forming and manufacturing. The method is used for solving the problems of cracking, ultra-poor thinning, low dimensional precision and the like in the forming process of the high-strength aluminum alloy thin-wall component with local continuous large-area bulge and local large wall angle characteristics in the aerospace field. According to the method, through two-stage area expansion distribution, the thinning amount of each stage is effectively controlled, and the cracking problem caused by one-time large deformation in a single process is avoided. And mirror images are cooperatively loaded on the local part of the plate to form a three-dimensional stress state, so that the forming limit is improved. And in-mold constraint aging synchronously realizes strengthening and shape righting, and is obviously superior to the traditional process.