25results about How to "Dimensionally stable" patented technology

This utility model relates to an ultra-thin rolled copper stamped fuse assembly. The fuse assembly includes a sheet copper substrate made of rolled copper with a thickness in the micrometer range, a first PI thermosetting film and a second PI thermosetting film respectively covering the upper and lower surfaces of the sheet copper substrate; the sheet copper substrate has a wavy fuse portion with a line width of 0.15±0.02mm. This utility model uses a high-precision die-cutting method to punch the ultra-thin rolled copper foil, directly forming a fuse semi-finished product. In particular, the extremely fine fuse portion is punched in one step, avoiding defects such as edge deformation caused by multiple punchings, ensuring stable dimensions and performance of the fuse portion. High-speed rotary die-cutting is then used for efficient and precise production, encapsulating the fuse portion within the film material, exposing the opening area and end area for electrical connection, improving production efficiency and subsequent use efficiency. The overall production efficiency can be increased to 5000pcs / H, and the yield rate to approximately 95%.

The utility model relates to a kind of wool knitted fabric, including the fabric body that warp fiber bundle warp is formed, and the fabric body is formed by multiple rows of fiber bundle arranged along front-back direction, wherein the adjacent three fiber bundles of front-back direction are a fiber bundle group, all fiber bundles are arranged to form multiple the fiber bundle group sequentially arranged along front-back direction, and the three fiber bundles of each fiber bundle group are wool fiber bundle, synthetic fiber bundle and antistatic fiber bundle respectively.The utility model solves the technical problem that the overall thickness of the fabric is relatively thick due to the stability and antistatic property of the fabric being improved by laminar compounding of the existing fabric.

The application provides a combined bottom plate structure of a laser, which is a multi-layer plate integrated structure fixedly connected to the bottom of the inner cavity of the laser, comprising a support plate, a semiconductor refrigerator, a heat insulation pad, a base plate and a mounting plate; the bottom surface of the support plate is fixedly connected to the bottom of the inner cavity of the laser shell; the semiconductor refrigerator and the heat insulation pad form a first square body structure, the bottom surface of the first square body structure is connected to the top surface of the support plate; the mounting plate and the base plate form a second square body structure; the bottom surface of the second square body structure is connected to the top surface of the first square body structure, and the top surface of the second square body structure is an optical platform for bearing a plurality of optical components and absorbing heat. The application also provides a heat dissipation method for the combined bottom plate structure of the laser. The application solves the technical problem that the bottom plate structure of the existing laser cannot simultaneously meet the requirements of high-efficiency heat dissipation, accurate temperature control and stable structure due to the single material.

The application discloses a short-process preparation method of SMA spring and application thereof, and relates to the field of fluid control.The method comprises the following steps: 1) installing an SMA alloy wire reel on a spring machine; 2) starting the spring machine, conveying the SMA alloy wire to a preheating area for preheating, and conveying the preheated SMA alloy wire to a spring winding processing area; and 3) winding and forming the SMA spring according to preset length and shape under the condition that the winding and forming temperature is Af+120 DEG C to Af+240 DEG C.The application adopts a hot winding mode, directly winds and forms the SMA spring under the condition that the winding and forming temperature is Af+120 DEG C to Af+240 DEG C, the spring is stable in size, does not need secondary shaping treatment, the manufacturing efficiency is remarkably improved, and the production cost is effectively reduced.

The application relates to the field of wind power blades, and discloses a wind power blade manhole plate and manhole cover plate as well as a preparation method and application thereof. The method comprises the following steps: (1) mixing unsaturated polyester resin, a thickening agent, an initiator, a crosslinking agent, a low shrinkage agent, a release agent, a polymerization inhibitor, an inorganic filler and waste glass fibers, and then filling the mixture into a mold for preheating; (2) performing mold pressing on the preheated material to obtain a preformed material; and (3) performing heat treatment on the preformed material, and then performing demolding to obtain the wind power blade manhole plate and manhole cover plate. The method is prepared by creatively adopting a mold pressing forming method, and waste glass fibers are used as raw materials for preparation, so that the preparation cost is saved, and the preparation efficiency is improved.

The invention discloses a liquid cooling driving pump body investment casting process which comprises the following steps: firstly, according to the size and the shape of a pump body, manufacturing a mold with a cavity consistent with the pump body and a loose piece for forming a complex inner cavity structure of the pump body, then injecting wax, molding a wax mold in the mold cavity by adopting a one-time mold splitting molding process, according to the pump body complex inner cavity wax mold, loose pieces are mutually positioned, combined and formed, then wax injection mold splitting is carried out to obtain a wax body, the wax body is connected to a mold head through a pouring gate system to form a tree group, then shell making and dewaxing are carried out on the tree group to form a mold shell, and then roasting, smelting pouring and post-treatment are carried out on the mold shell to form a casting. And the casting is further machined through overhauling, heat treatment, shaping and finish machining, and finally the qualified pump body is obtained if the casting is detected to be correct. Through one-time mold splitting of the wax piece with the complex structure in the inner cavity of the pump body, the mold splitting efficiency is improved, the cost is reduced, meanwhile, the pump body casting is corrected by adopting a one-time composite sizing mold after being subjected to smelting pouring, orderly cooling solidification and heat treatment, and the leakage risk of the pump body casting is greatly reduced.

This invention discloses a composite deformation heat treatment process for improving the strength and corrosion resistance of aluminum-lithium alloys, belonging to the field of aluminum-lithium alloy preparation technology. The composite deformation heat treatment process for improving the strength and corrosion resistance of aluminum-lithium alloys of this invention includes the following steps: (1) performing solution treatment, water quenching, and natural aging treatment on the aluminum-lithium alloy in sequence; (2) performing pre-deformation treatment on the aluminum-lithium alloy treated in step (1); (3) performing non-isothermal aging treatment on the aluminum-lithium alloy treated in step (3); wherein, the pre-deformation amount of the pre-deformation treatment is 4~10%; the non-isothermal aging treatment is to first raise the temperature from 40℃ to 140~200℃ and then lower the temperature to 100~160℃; the aluminum-lithium alloy treated by the composite deformation heat treatment process of this invention has both good mechanical properties and corrosion resistance.

This invention discloses a method for preparing mullite porous ceramics by adding urea fluorosilicate. The preparation method includes the following steps: accurately weighing the following basic raw materials by mass fraction: kaolin clinker and alumina micro powder; slowly adding urea solution dropwise to fluorosilicic acid solution while continuously stirring throughout the process, and obtaining urea fluorosilicate solution after the system is homogeneous; adding urea fluorosilicate solution, kyanite, mullite whiskers and water to the basic raw materials, mixing evenly and pouring into a mold; placing the mold in an oven at 60~90℃ for sealing and curing for 2~6 hours; after molding, demolding and drying for 24~48 hours, and then holding at 1450℃~1600℃ for 2~4 hours, a mullite porous ceramic with a through-pore structure, high porosity, low thermal conductivity, good flexural strength and dimensional stability is obtained.

This utility model relates to the field of textile fabrics, and more particularly to a green and environmentally friendly fabric, comprising a reinforcing surface layer and an environmentally friendly base layer. A heat-melting yarn is disposed between the reinforcing surface layer and the environmentally friendly base layer. The environmentally friendly base layer is made of regenerated cellulose fibers. The top and bottom ends of the heat-melting yarn are fixedly connected to the reinforcing surface layer and the environmentally friendly base layer, respectively. The heat-melting yarn is woven from heat-melting fibers. The reinforcing surface layer is woven from fiber bundles, which include tensile fibers, flame-retardant fibers, absorbent fibers, polyester fibers, and corrosion-resistant fibers. The tensile fibers, flame-retardant fibers, absorbent fibers, polyester fibers, and corrosion-resistant fibers are bundled together to form a tight structure. This invention solves the technical problems of insufficient environmental performance and functionality in traditional fabrics.

This invention belongs to the technical field of tobacco processing equipment, and provides a modified nylon idler roller for a tobacco processing belt conveyor and its manufacturing process. The idler roller includes a roller shaft, a three-section roller, a positioning sleeve, and a sealing end cap. The three-section roller is integrally formed from modified nylon material, and has an axially extending sleeve groove inside, with friction texture on its outer circumference. The positioning sleeve is embedded in the sleeve groove, and its outer ring has a guide rail that cooperates with the sleeve groove. The three-section roller and the positioning sleeve are axially limited by a snap-fit ​​structure. A brass sleeve is fixed to the inner ring of the positioning sleeve, and the brass sleeve has a bearing housing cavity that rotatably cooperates with the reduced diameter shaft section. The outer wall of the brass sleeve slides in contact with the inner wall of the sleeve groove. The sealing end cap is fixedly connected to the end of the three-section roller and together with the roller shaft and the positioning sleeve, forms a closed chamber. This invention enables oil-free, low-resistance, and sealed rotation, and is suitable for the harsh working conditions of tobacco processing workshops.

The application relates to the technical field of glass fiber fabrics, and discloses an ultrahigh modulus uniaxial glass fiber fabric and a preparation method thereof. The ultrahigh modulus uniaxial glass fiber fabric comprises 0 DEG warp yarn, 90 DEG weft yarn and polyester filaments, and the 0 DEG warp yarn, the 90 DEG weft yarn and the polyester filaments all adopt ultrahigh modulus uniaxial glass fibers; the ultrahigh modulus uniaxial glass fiber is prepared through the following steps: step (1), a glass fiber sizing agent is coated on the surface of the glass fiber, the coated glass fiber is naturally air-dried and constant-temperature dried to obtain the glass fiber coated with the resin; step (2), the glass fiber coated with the resin, zeolite molecular sieve, copper powder, ethanol and triethanolamine are mixed to obtain a dispersed resin-molecular sieve mixed system; the molecular sieve mixed system is subjected to a crystallization reaction to obtain the ultrahigh modulus uniaxial glass fiber. The prepared glass fiber fabric has the advantages of high modulus and high hardness.

The invention relates to the technical field of metal powder machining, and particularly discloses a metal powder excess material recycling device which comprises a recycling device body and a hydraulic cylinder, the hydraulic cylinder is fixedly installed on the bottom wall of the top end of the recycling device body, a hydraulic rod is slidably connected to an inner cavity of the hydraulic cylinder, and a pressing block is fixedly installed at the bottom end of the hydraulic rod. According to the metal powder feeding device, quantitative discharging can be carried out when metal powder excess materials are pressed through the discharging assembly, it can be ensured that the amount of metal powder used by each pressed product is consistent, and a film cavity can be automatically cleaned through the pressing assembly after pressing so that the product quality can be improved; residual powder is prevented from being mixed into a new batch of pressed products through automatic cleaning, the product yield is improved, the residual powder is prevented from abrading equipment, the service life of the equipment is prolonged, in addition, the pressed products can be subjected to demolding treatment, rapid taking out is facilitated, and the machining efficiency is improved.

The application discloses a kind of based on substructure pre-stabilization ultra-high multilayer printed circuit board manufacturing method, suitable for the number of layers N greater than 20 ultra-high multilayer board manufacturing.The method divides the whole manufacturing process into three stages, and sequentially forms inner core, intermediate and final substructure.The core is: after each manufacturing stage is completed, the complete encapsulation process of metalization, resin filling, grinding and copper cap plating of interconnection hole is carried out, so that the mechanical and electrical stability of the current substructure is realized before entering the next stage of pressing.Meanwhile, for each substructure, its pressing process parameters are independently set to match its material and structural characteristics.The application effectively solves the core problems of poor interlayer alignment accuracy, poor high aspect ratio hole plating uniformity and low overall yield caused by thermal-mechanical stress accumulation in traditional manufacturing of ultra-high multilayer board, significantly improves the reliability and manufacturing efficiency of the product.

The application discloses a three-way catalyst reducer shaping tool composite die set, which comprises a fixed die seat, the upper end face of which is provided with a lower die seat in parallel, two symmetrically arranged side die frames, which are symmetrically fixed on the fixed die seat and located on the two sides of the lower die seat, an upper stamping seat arranged above the fixed die seat, a first forming die set and a second forming die set, each of which is composed of two model plates arranged in an up-down mode, a die closing mechanism arranged below the lower die seat, and a plurality of reducer units, each of which is arranged at two reducer shaping ports of the first forming die set and the second forming die set. The double die set design of the application combines pre-reducing with accurate reducing, step-by-step forming is realized, size out-of-control caused by single large deformation is avoided, and a micro dynamic spinning shaping force is applied to the inside of the shell, so that the rebound is significantly reduced and the size stability after reducing is ensured.

This utility model relates to a continuous stamping die for producing wave-shaped chucks, belonging to the field of stamping die technology. It solves the problems of existing dies requiring numerous molds, occupying a large area, having dimensional errors, and reducing production quality. The lower die plate includes a trimming die, a pre-punching die, a bending die I, a bending die II, a punching die, a stepping die, a wave-shaped punching die, and a blanking die. A wave-shaped punching component is provided on the upper die plate at a position corresponding to the wave-shaped punching die. The wave-shaped punching component includes a punch base and multiple punch blocks. A punch pad is detachably mounted on the bottom end face of each punch block. The wave-shaped punching die includes a forming base and a positioning boss mounted on the upper end face of the forming base. The positioning boss is disc-shaped. The forming base has a groove that mates with the punch pad. This design reduces the number of processes, reduces the number of equipment and dies required, improves production efficiency, increases output per shift, provides more stable dimensions, and reduces deformation.

The utility model discloses side face punching die, including floating plate, the guide block of setting on floating plate, and the protruding die fixed insert has inclined surface contact to the guide block, and one end of protruding die fixed insert is fixed on inclined wedge, and the other end is provided with second spring and protruding die, still be provided with floating plate insert on floating plate, and set up the unloading block with through telescopic hole in floating plate insert, and protruding die inserts telescopic hole of unloading block and enters female die insert. Make full use of inclined wedge, guide block structure will the blanking force of vertical direction of punch press into the movement of oblique direction's die structure of cutting, save die, production, artificial cost, and the product size stability of forming, positioning accurate etc. The die structure of the invention provides reference for future inclined plane cutting and horizontal cutting.

The application discloses a precise and simple FCM ship body forming die. The die is made of a plurality of station plates, positioning clamping plates and face plates which are connected to form a reduced-size frame with ship body lines inside. The face plates in the frame are attached with forming surfaces which are composed of a glass fiber strength layer, a polyester putty layer and a surface gel coat layer. The frame is connected and fixed with a base and a supporting rod made of rectangular tubes to form a stable ship body die. On the face plates in the frame, reference points calibrated by a laser range finder are arranged at the intersection of each station and different waterlines, and the connecting lines of the reference points form a point net which is the same as the ship body lines, so as to mark the size of the forming surface, thereby ensuring the size accuracy, smooth lines and smooth surface of the die. The die is made of light materials, has the advantages of light weight, stable structure, precise lines, simple process, short production cycle and low manufacturing cost, and is suitable for the production of FCM ship bodies with high production technical requirements and small production batches.

This invention relates to the field of tire technology and discloses a tire with low rolling resistance, high handling, and low electrical resistance, comprising a first crown, a second crown fixedly connected to the bottom of the first crown, and a third crown fixedly connected to the bottom of the second crown. This invention, by setting up a first crown, a second crown, a third crown, and vertical grooves, utilizes the vertical grooves on the first crown to pierce the water film during wet driving, thereby improving drainage efficiency and grip. On dry surfaces, the groove edges increase ground contact, enhancing handling response. Simultaneously, the groove distribution disrupts rolling noise frequencies to reduce noise, increases surface area to aid heat dissipation, buffers peak pressure to improve wear uniformity, and works synergistically with the low rolling resistance of the second crown and the electrical conductivity of the third crown. Testing has verified that this structure allows the tire to maintain a higher level of grip performance and achieve a rolling resistance coefficient reaching EU Class A.

This utility model relates to the technical field of stretching and heat-setting equipment, and discloses a stretching and heat-setting equipment for producing super geotextiles. It includes a mounting base plate, a stretching assembly mounted on the mounting base plate, and a heat-setting assembly mounted on the mounting base plate. The heat-setting assembly includes a heat-setting box fixedly connected to the upper surface of the mounting base plate. Rectangular grooves communicating with the interior of the heat-setting box are formed on both the front and rear surfaces. A partition plate is fixedly connected inside the heat-setting box, and a rectangular through-slot is formed on the partition plate. The rectangular through-slot corresponds to the two rectangular grooves. By setting the heat-setting assembly and the stretching assembly, the three sets of stretching assemblies achieve step-by-step stretching, improving the stretching uniformity. The synergistic effect of heating and cooling within the heat-setting box stabilizes the geotextile dimensions, thus simultaneously completing heat setting while stretching the geotextile, thereby improving the practicality of the stretching and heat-setting equipment for producing super geotextiles.

The utility model provides a kind of foamed ceramic composite machine bed of integrated cooling runner, including foamed ceramic pedestal, reinforcing rib, workbench, the inside of foamed ceramic pedestal is equipped with the hole structure of net-like distribution, hole structure includes rib hole and runner hole, rib hole is used to fill reinforcing rib, runner hole constitutes cooling medium passage;Runner hole inner wall is equipped with sealing layer, runner hole is equipped with medium inlet and medium outlet on foamed ceramic pedestal side wall;Reinforcing rib is filled in the inner wall of rib hole, and is integrated with foamed ceramic pedestal solidification, form built-in reinforcing framework;Workbench is fixedly arranged on the upper surface of foamed ceramic pedestal, and workbench is integrally connected with reinforcing rib at the orifice of rib hole.This foamed ceramic composite machine bed of integrated cooling runner has active temperature control capability, and has the advantages of lightweight, strong vibration absorption and damping capacity, high structural strength, good dimensional stability.

The utility model discloses a novel conductor three layer co -extrusion mould and novel conductor, novel conductor three layer co -extrusion mould includes mould body and the mould core of detachable setting on mould body, be equipped with conductor export on the mould body, the mould core includes mould core body and the extrusion channel in the middle part of mould core body, the diameter of extrusion channel is slightly greater than the diameter of conductor export, and the inner wall of extrusion channel is coated with the nanometer coating of reducing the friction between conductor and extrusion channel, has reduced the friction between conductor and mould in the production process greatly, has solved the problem of conductor burr and die mouth aluminum powder accumulation because of friction.

The application discloses a kind of polymer film-based silicone composite films, preparation method and veneer, belong to composite material and surface decoration material technical field.Polymer film-based silicone composite films include sequentially stacked in thickness direction organic silicon surface layer, organic silicon structure layer, organic silicon adhesive layer and polymer film substrate layer, and polymer film substrate layer is plastic film layer;Organic silicon surface layer, organic silicon structure layer and organic silicon adhesive layer are formed by crosslinkable silicone composition solidification, and adjacent organic silicon layer forms continuous crosslinking network at interface;Organic silicon adhesive layer also contains anchor component compatible with polymer film substrate layer, realize stable composite between organic silicon layer, between organic silicon layer and polymer film substrate layer, with good integrated composite structure and interlayer bonding performance.

This utility model discloses an online shaping and cooling device for thermal insulation strips used in curtain wall decoration, relating to the field of thermal insulation strip preparation technology. It includes: a base with two supports fixedly installed on its top surface; a box frame fixedly installed between the two supports on the top surface of the base; a cooling groove on the top surface of the box frame; and coolant stored in the cooling groove. By setting up a cooling mechanism, atomizing nozzles, a main traction roller, a driven roller, an ultrasonic generator, and a cooling fan work together to achieve spray pre-cooling of the high-temperature thermal insulation strip. Then, the strip is uniformly tractioned by the main traction roller and the driven roller, ultrasonic cavitation enhances heat exchange, and a brush simultaneously deburrs and dries the strip continuously and in an integrated manner. This significantly extends the effective cooling time, improves cooling uniformity and heat exchange efficiency, and simultaneously completes surface cleaning and drying, ultimately obtaining a curtain wall decorative thermal insulation strip with stable dimensions, a clean surface, and no thermal stress deformation.

This invention provides a foamed ceramic composite machine tool bed with layered isolation between flow channels and ribs. It includes a foamed ceramic base with an internal channel structure comprising a cooling layer and a reinforcing layer. The cooling layer is located above the reinforcing layer, and the cooling layer and reinforcing layer are completely isolated by a solid foamed ceramic partition. The cooling layer contains multiple horizontally parallel flow channels, each with a sealing layer on its inner wall. The flow channels also have media inlets and outlets on the sidewalls of the foamed ceramic base. The reinforcing layer contains horizontal and vertical slots arranged in a three-dimensional mesh pattern. Reinforcing ribs fill these slots and are integrally formed with the foamed ceramic base, creating a built-in reinforcing skeleton. This foamed ceramic composite machine tool bed offers advantages such as strong active temperature control, no interference between the flow channels and the skeleton, simple manufacturing process, lightweight design, strong vibration absorption and damping capabilities, high structural strength, and good dimensional stability.