148 results about "Thermal softening" patented technology

The invention discloses a multilayer co-extrusion heat-shrinkable film and a preparation method thereof, the film comprises an outer wear-resistant layer, a middle support layer and an inner functional layer, the thickness ratio of each layer is 1: 3: 1-1: 5: 1, the total thickness is 50-150 [mu] m, and the raw materials are prepared according to respective formulas. The preparation method comprises the steps of raw material preparation, melt mixing, die head extrusion, two-way stretching, water-cooling shaping, electronic crosslinking, aging treatment, heating softening and cold and hot shaping. The carbon nanotubes (CNT) and the h-BN nanosheets synergistically hinder crack propagation in the middle layer, so that the crack propagation resistance of the film is remarkably improved, the tensile strength, the thermal shrinkage rate and other properties are also optimized, compared with a traditional film, the comprehensive properties of wear resistance, high strength and high thermal shrinkage rate are achieved through interface collaborative design, meanwhile, the production cost is reduced by 20-30%, and the application prospect is wide. The method is suitable for food packaging, electronic device protection and other fields.

The invention relates to a method for improving the binding force of a friction stir additive manufacturing structure layer. The method comprises the steps that oxide skin on the surfaces of a raw material bar and an additive substrate is removed; the additive substrate with the oxide skin removed is fixed; feeding the raw material bar towards the additive substrate; the raw material bar with the oxide skin removed makes contact with the additive base plate in the rotating advancing process and rubs against the additive base plate, and the end of the raw material bar is heated to be softened and evenly smeared on the surface of the additive base plate with the oxide skin removed; and after the raw material bar advances to the designated position, the raw material bar is controlled to be lifted by the height of one layer, the raw material bar is fed, and next-layer additive machining continues to be conducted on the additive base plate. According to the method, the problem of additive flowing caused by interlayer oxide inclusion of materials in the additive manufacturing process is solved, in addition, the metallurgical bonding effect between layers of the stirring friction additive manufacturing component is improved by removing oxide skin on the additive raw materials and the base plate, the longitudinal strength of the component is improved, and the service life of the component is prolonged. And the problem of longitudinal brittle fracture of the component caused by oxide inclusion is solved.

The invention relates to the field of precision machining detection, and discloses a hydraulic shaft sleeve machining detection system and detection device which comprises a pneumatic servo control module, a signal collecting and processing module and a thermal inversion calculation module. The pneumatic servo control module drives the overturning air cylinder to apply a composite pressure waveform containing a static reference and a periodic flutter component to the hydraulic sleeve; the signal acquisition and processing module performs frequency domain analysis on a displacement signal detected by the displacement sensor and separates average displacement and displacement amplitude; the thermal inversion calculation module calculates real-time dynamic stiffness according to the displacement amplitude, a material stiffness thermal softening model is used for reversely deducing a temperature rise value, thermal expansion and elastic deformation errors are stripped through multi-dimensional error decoupling operation, and real height data under the standard temperature and without external force are calculated. According to the invention, active excitation and frequency domain analysis technologies are utilized, so that the interference of an oil film and thermal deformation is effectively solved, and high-precision online detection and processing compensation of a thermal-state workpiece are realized.

The invention relates to the technical field of power cables, and particularly discloses a cable with a cable insulation layer and a preparation method thereof, and the cable comprises a conductor and an insulation layer wrapping the conductor. The preparation method comprises the following steps: S1, raw material pretreatment: preheating and softening the high-strength silicone rubber in a temperature interval of 120-150 DEG C; s2, a mixing procedure: adding an aluminum hydroxide flame retardant and ethylene-vinyl acetate copolymer resin into the pretreated high-strength silicone rubber; and S3, extruding and coating: applying the mixed composite material to the periphery of a conductor through an extruder, and controlling the extrusion temperature to be 140-170 DEG C. The cable can be used for power transmission in a high-temperature environment, and has the advantages that the flexibility and tear resistance are maintained in the high-temperature environment, and meanwhile, the long-term thermal stability is improved; in addition, the preparation method disclosed by the invention has the advantages of improving the compatibility of the filler and the matrix and improving the mechanical property of the cable.

The invention discloses paired disc type friction equipment for cloth fiber recovery processing, and particularly relates to the field of mechanical equipment, the paired disc type friction equipment comprises a bearing box table, and a friction mechanism, a spiral conveying mechanism for feeding and a finished material extraction assembly are arranged at the top of the bearing box table. The friction mechanism is driven by the transmission motor to work, the friction mechanism shears and crushes materials, the materials are heated and softened after being cut, and the materials are discharged out of the friction assembly through the discharging groove from the position of the inclined variable slope table at the edge of the concave table disc along with the centrifugal force of high-speed rotation of the movable convex disc under the self weight of the materials. The granular materials are assisted to be discharged from the position of the friction assembly part, so that the condition that viscous materials are retained on the surfaces of the movable convex disc and the fixed concave disc and cannot be discharged smoothly is effectively avoided, and then the granular materials gathered in the processing cavity are discharged out of the friction mechanism through the discharging hopper along with negative-pressure airflow; and the situation that the softened materials cannot be smoothly discharged due to the viscous force of the materials is avoided.

The present invention belongs to the technical field of detection methods, and specifically discloses a method for predicting the tensile strength of a carbon fiber epoxy resin-based composite material at high temperature. The prediction method determines the pyrolysis process of the material during the heating process, determines the peak temperature of each stage, determines the insulation time required for the carbon fiber epoxy resin-based composite material unidirectional laminate to reach a thermal equilibrium state, determines the tensile strength of the carbon fiber epoxy resin-based composite material at different temperature points in a high temperature environment, and determines the change law and prediction method of the tensile strength of the material during the pyrolysis process. The prediction method of the present invention takes into account the influence mechanism of the thermal softening, thermal decomposition of the resin matrix and the high-temperature softening of carbon fiber on the tensile strength of CFRCs, can truly and effectively characterize the tensile performance degradation process of the carbon fiber epoxy resin-based composite material at high temperature, and macroscopically predict the high-temperature tensile strength of the carbon fiber epoxy resin-based composite material, and is suitable for a temperature range of 20°C to 450°C.

The invention discloses a cutting force prediction method based on in-situ laser auxiliary heating orthogonal milling, and belongs to the technical field of laser auxiliary heating machining.The cutting force prediction method comprises the steps that the instantaneous meshing angle and the instantaneous cutting thickness of milling cutter teeth are obtained; according to the environment temperature and the workpiece temperature, obtained based on the laser temperature finite element model, of the laser irradiation area, the shearing force coefficient and the ploughing force coefficient in the three directions are obtained; establishing a cutting force model of the milling infinitesimal of the milling cutter under the cutter coordinate system O1X1Y1Z1 so as to obtain three-way instantaneous cutting force borne by the milling infinitesimal of the milling cutter; the three-way instantaneous cutting force is converted into a workpiece coordinate system O0X0Y0Z0, integral summation is conducted within the axial cutting depth range of the cutting edge of the milling cutter, and meanwhile, the three-way cutting force borne by the milling cutter under the workpiece coordinate system O0X0Y0Z0 is obtained by combining a laser temperature threshold function. According to the method, the influence of tool wear evolution and workpiece material thermal softening is considered, and the cutting force of in-situ laser auxiliary heating orthogonal milling can be accurately predicted.

The invention relates to the technical field of photovoltaic modules, and discloses a colorable PID-resistant carbon fiber photovoltaic module frame, which comprises a frame body, and is characterized in that the frame body is internally provided with a hollow structure; the honeycomb layer plate is embedded in the hollow structure of the frame body, and the honeycomb layer plate is composed of a plurality of regular hexagon honeycomb grid arrays; the interiors of the honeycomb grids are filled with the microcapsules, and repair materials capable of being oxidized and cured are packaged in the microcapsules; the water-absorbent resin is arranged in the honeycomb grid and is positioned at the front end of the microcapsule; the honeycomb lattice is of a conical structure with a narrow front part and a wide rear part and is used for guiding a repairing material to directionally flow to a crack area. According to the colorable PID-resistant carbon fiber photovoltaic module frame, the water-absorbent resin expands when encountering moisture to trigger the microcapsules to break, a released repairing material directionally flows to a crack area along the conical honeycomb grid, a high-insulation sealing layer is formed after oxidation and curing, a moisture permeation path is thoroughly blocked, the detachable shell is matched with a heat softening sealant structure, the honeycomb laminate is convenient to replace, and the service life of the frame is prolonged. And the service life is greatly prolonged.

The invention provides a film covering device and method for a curved-surface liquid crystal display screen. The film covering device comprises a heating roller and a pressing roller which are arranged on a movable roller body support; one side of the film body is wound and stored on the discharging roller, the other side of the film body is sequentially arranged on the heating roller and the pressing roller, and a release film layer of the film body is wound and stored on the receiving roller; the maximum stroke length of the film body between the heating roller and the pressing roller is set to be L < = (K1-K2) / Q; wherein L is the maximum stroke length of the film body between the heating roller and the pressing roller, Q is the average temperature reduction value of the heated film body in unit stroke length, K1 is the temperature of the film body heated by the heating roller, and K2 is the lowest temperature of the film body for maintaining thermal softening; the heating roller continuously heats the part, corresponding to the large curvature of the curved screen to be covered, of the thermal deformation film layer. The problem that after a curved display screen with the large curvature is used for a long time, a film body part rebounds, is degummed and tilts is solved, and the curved surface attaching effect of the rolling film covering technology is improved.

To provide a fitting in which thermal softening of a resin frame body and deformation thereof due to load can be suppressed.SOLUTION: A fitting including a frame body and a sliding sash fitted therein in a slidable manner, wherein the frame body has a resin frame body and a protrusion that protrudes from an inner surface of the frame body in a width direction and comes into contact with the sliding sash or is positioned close in a depth direction of the frame body, and the protrusion is at least partially made of metal, or at least the protrusion among the frame body and the protrusion is at least partially made of heat-resistant resin.SELECTED DRAWING: Figure 1

The present invention belongs to the technical field of blister forming, and particularly relates to a blister box vacuum blister forming device and its forming process. The blister box vacuum blister forming device of the present invention comprises an upper box body, a lower box body, a heating unit, a clamping assembly and an exhaust assembly. When in use, the gas thrust formed by the air pressure difference can be used to support the plastic sheet. When the plastic sheet is softened by heat, the air thrust formed by the air pressure difference can balance the gravity of the plastic sheet itself, so the plastic sheet will not fall and stretch in the middle due to its own gravity. During the entire heating process, the plastic sheet always remains flat and is heated more evenly, which will not affect the subsequent blister process, thereby improving the yield rate. The blister box vacuum blister forming process of the present invention uses the air thrust generated by the air pressure difference during processing to enable the plastic sheet to maintain a flat surface after softening, and to be heated more evenly, which will not affect the subsequent blister process, thereby improving the yield rate.

The invention belongs to the field of combined machining, and particularly discloses a laser ultrasonic cooperative texture cutter dynamic gap heat dissipation combined machining device and method.The method comprises the steps that surface microstructure parameters of a cutter are designed according to the material and shape characteristics of a part to be machined; the tool is clamped in an ultrasonic vibration auxiliary machining device, so that the tool is precisely positioned at a micro-texture preparation station, and a micro-texture is prepared on the surface of the tool by adopting femtosecond laser of a laser machining composite device; a workpiece is clamped, the micro-texture tool is installed on the ultrasonic vibration auxiliary machining device, the micro-texture tool is located at a combined machining station and tool setting is completed, the laser machining combined device and the ultrasonic vibration auxiliary machining device move along, the laser machining combined device is adjusted to enable an auxiliary heating laser beam to conduct laser preheating softening on a to-be-machined area, and heat damage is restrained. The ultrasonic vibration auxiliary machining device enables the micro-texture tool to conduct ultrasonic vibration to achieve periodic intermittent machining, the machining feeding process is conducted, and combined machining is completed.

The present application relates to a kind of multi-material carrying tray integrated forming method, comprising the following steps: (a) carbon fiber plate material is machined to be processed into the size and shape required, obtain the bottom plate;(b) the bottom plate is heated and softened, bury in preheated forming mold;The preheating temperature of the forming mold is 130~180 ℃;(c) using the injection head of injection molding machine, poly (carbonate) is injected into the forming mold with fiber reinforcement to adhere at the edge of the bottom plate, cooling forming to obtain the peripheral wall;(d) using another injection head of injection molding machine, TPU is injected into the forming mold, and after cooling, forming can be obtained. Thus, products meeting different performance requirements can be obtained, thereby greatly reducing the complexity of manufacturing process, improving efficiency, reducing cost, and forming large-scale batch industrialization capacity.

The present invention is a thermally conductive composite silicone rubber sheet characterized by comprising: a thermally conductive silicone rubber sheet; and a heat-softening silica resin layer which is disposed on one surface or both surfaces of the heat-conducting silica rubber sheet, has a thickness of 0.5-10 [mu] m, and has an absolute viscosity at 70 DEG C of 10-700 Pa * s. The heat-softening silica resin layer contains: (A) 75-95% by mass of a heat-softening silica resin in which the ratio of phenyl groups to the number of all substituents directly bonded to silicon atoms is 20 mol% or more; and (B) 5-25 mass% of a diphenylsiloxy group-containing organopolysiloxane represented by formula (1) (in formula (1), m is an integer of 3-5, and n is an integer of 5-12). As a result, it is possible to provide a thermally conductive composite silicone rubber sheet which is capable of suppressing oil bleeding and which exhibits adhesiveness by instantaneous contact. # imgabs0 #

The invention discloses a textile polyester fiber spinneret plate machining device, relates to the technical field of milling machining, and aims to solve the technical problem of low machining precision, the textile polyester fiber spinneret plate machining device comprises a milling machine and a hole milling device arranged on the outer side of the milling machine, a guide assembly comprises an annular guide groove, and the annular guide groove is formed in the inner wall of a sleeve. The hole milling mechanism comprises a shaft head and supporting arms fixedly connected to the outer walls of the two sides of the shaft head, balls are rotationally installed at the top end and the bottom end of each supporting arm, a milling cutter is fixedly connected to the interior of the shaft head and comprises a cutting part and a friction part, the cutting part is used for milling spinneret plate micropores, and the friction part is used for friction machining of the spinneret plate micropores. And the friction part is used for heating and softening a to-be-processed part of the spinneret plate. The device has the advantages that hard and brittle materials are preheated and softened, edge breakage and cracks are avoided, the precision and smoothness of the machining position are improved, chip removal and sleeking are facilitated, the horizontal position of the milling cutter is adjusted, and the milling requirements of different micropore shapes are met.

The invention relates to the technical field of composite materials, and discloses an impact resistance-wave absorption integrated fiber reinforced composite material and a preparation method thereof.The preparation method comprises the following steps that 1, N layers of carbon fiber prepregs and M layers of wave-transparent fiber prepregs are sequentially laid from bottom to top, and laminated prepregs are obtained; 2, pre-arranging conductive fibers which are arranged in an array mode and are perpendicular to the direction of the plane where the surface of the base body is located in the plate-shaped base body to obtain a fiber carrier; 3, after the laminated prepreg is preheated and softened, the fiber carrier is implanted into the laminated prepreg under the heating and pressurizing conditions, meanwhile, curing and cooling are conducted, and then the needed composite material plate can be obtained; a carrier pre-fixing-one-step hot-pressing curing method is adopted, and the implanting process of the conductive fibers and the integral forming process of the composite material are combined into a whole; the preparation method is simple, secondary bonding or complex post-treatment is avoided, and synchronous forming and firm combination of the structural layer, the conductive fibers and the resin matrix on the microscopic scale are achieved.

The invention belongs to the technical field of ancient building protection and maintenance, and discloses a wall-climbing robot for removing masonry ancient building blocks and a working method thereof. The wall-climbing robot comprises a robot body, a microwave irradiation device and a block removing device; the robot body is used for being adsorbed to the wall face of a building in a negative pressure adsorption mode and can move on the wall face of the building. The microwave irradiation device and the building block removing device are both installed on the robot body. The microwave irradiation device is used for radiating microwave energy to the to-be-removed building blocks on the wall surface of the building so as to heat and soften the to-be-removed building blocks; the building block removing device is used for mechanically removing the heated and softened building blocks to be removed; the wall-climbing robot has the advantages that the removal efficiency is improved, secondary damage is reduced, the adaptability is high, and the robot is environmentally friendly and free of damage, and has important significance in promoting progress of a masonry ancient building protection technology and inheritance of cultural heritage.

The invention relates to the technical field of metal material processing, and discloses a preparation method of a copper-silver alloy for a high-strength and high-conductivity new energy wire harness, which comprises the following steps: inhibiting segregation caused by copper-silver density difference and refining grains by using a rotating traveling wave magnetic field and a high-energy ultrasonic beam through magneto-acoustic double-field coupling rheological continuous casting. And then under a cryogenic environment, special modified polysiloxane-graphene hybrid conductive gel is matched for large-strain drawing, the gel keeps semi-solid lubrication at a low temperature, and a conductive channel is established. And finally, establishing an axial temperature gradient by utilizing the temperature difference between the cryogenic state of the wire rod and the contact electrode area, and applying a unipolar electric pulse to trigger the Thomson effect. According to the process, a Thomson heat flow item is used for correcting a Joule thermal field, and electron wind power is used for driving silver atoms to be directionally separated out along high-density dislocation while overheating softening of a copper matrix is restrained. The method effectively solves the problem that the strength conductivity is inverted due to solidification segregation and traditional heat treatment, and the comprehensive performance of the copper-silver alloy is synchronously improved.

The invention relates to automobile thermal forming structural part softening equipment in the technical field of automobile accessory softening, which comprises an equipment box body, a plurality of groups of lower supporting assemblies are arranged in the equipment box body, so that the whole automobile thermal forming structural part can be heated and softened conveniently, and an upper supporting assembly is arranged at the top of each group of lower supporting assembly; the structure of the upper supporting assembly is the same as that of the lower supporting assembly, and the upper supporting assembly and the lower supporting assembly are distributed in a mirror image mode, so that local heating and softening of the automobile thermal forming structural part are facilitated. The automobile thermal forming structural part is placed on the top of the supporting part and makes multi-point contact with the supporting part, the automobile thermal forming structural part can be evenly heated and softened conveniently, and two sets of isolation parts are arranged at the top end of the supporting plate and arranged on the two sides of the supporting part respectively. According to the method, the continuity and uniformity of strength distribution on the structural part can be optimized, and the dimensional precision and shape stability of the structural part can be improved.

The invention discloses a method for rapidly preparing a C-shaped section bistable composite material cylindrical shell structure based on a thermoplastic preform and a forming mold, and designs a set of forming mold with low-temperature supporting property and high-temperature preforming function at the same time, and a flat plate structure with a heating function can support a thermoplastic preform sheet at low temperature; meanwhile, after being heated and softened at high temperature, the C-shaped composite bistable pipe can be quickly attached to the inner surface of the semicircular groove of the female die, and then the cylindrical male die is used for achieving winding forming of the C-shaped composite bistable pipe. A thermoplastic composite material prefabricated body is used, and integrated forming can be achieved in a designed mold tool. Compared with an existing conventional closed structure, rigid thermoplastic prefabricated body sheets can be used, cloth does not need to be laid layer by layer, continuous processing operation can be achieved, the forming period generally needing 1-2 h is shortened to 15 min for each piece, efficiency is greatly improved, and cost is reduced.

The utility model discloses a stripping device for a film type LNG (Liquefied Natural Gas) secondary shielding layer, which comprises a bottom plate, a connecting frame and a flame projector which are arranged on the bottom plate, a sliding rail arranged on the connecting frame, a sliding block matched on the sliding rail, a connecting plate arranged on the sliding block, and a rotating motor and a fixed plate which are connected to the connecting plate, the connecting frame is provided with a rack, a rotating shaft of the rotating motor is provided with a gear matched with the rack, the gear is meshed with the rack, the fixing plate is provided with a stripping groove used for containing a to-be-stripped piece, the to-be-stripped piece is fixed in the stripping groove, and the side edge of the stripping groove is bent outwards to form a stripping guide part. According to the glue heating and softening device, the plywood can be prevented from shifting, heating and softening of glue at the stripping position and stripping of a glass fiber layer and an aluminum foil layer are achieved by moving the plywood, the consistency of the heating and softening effects of the glue is guaranteed, and the smoothness of stripping operation and the accuracy of stripping data are guaranteed.

This invention discloses a fitting method for the Johnson-Cook constitutive model of PtW7Ir1 alloy ultrafine wire drawing, belonging to the field of numerical simulation technology for metal material processing. This invention extracts three coefficients from the JC constitutive model and obtains the true stress-strain by conducting room temperature quasi-static uniaxial tensile tests on standard PtW7Ir1 alloy specimens. Then, it solves for the yield strength A and elastic modulus of the PtW7Ir1 alloy. Using the Hollomon's rule and the JIA rule, it obtains the strain hardening modulus B and hardening exponent n. Based on the yield stress data obtained from the tensile test, it calculates the strain rate strengthening coefficient and thermal softening exponent using the least squares method to complete the fitting of the constitutive model. This invention obtains JC constitutive parameters applicable to this alloy and, by introducing the Hollomon's rule and the JIA rule, accurately predicts the true hardening behavior of the material after necking, enabling the constitutive model to more realistically reflect the mechanical response of the material under cumulative deformation in multiple drawing passes.

The utility model relates to the related technical field of concrete laminated slab processing, in particular to reinforcing steel bar straightening equipment for concrete laminated slab processing. A straightening box is arranged at the top of the rack, and a reinforcing steel bar body is arranged in the straightening box. Under the matching action of the rack, the straightening box, the reinforcing steel bar body, the feed port, the discharge port, the portal frame and the straightening mechanism, the reinforcing steel bar can be rapidly heated and softened, so that the resilience force of the reinforcing steel bar is reduced, the plasticity is increased, the straightened reinforcing steel bar is prevented from generating elastic recovery, the straightening effect of the reinforcing steel bar is improved, and the production efficiency is improved. The problems that although existing reinforcing steel bar straightening equipment for concrete laminated slab machining can straighten reinforcing steel bars, the existing reinforcing steel bar straightening equipment does not have the function of heating and softening the reinforcing steel bars, the reinforcing steel bars can generate small-amplitude springback due to elasticity recovery after being straightened, and the reinforcing steel bar straightening effect is poor are solved.

The invention relates to the technical field of plate production, in particular to a polycarbonate plate production cooling system which comprises a workbench, a protective cover, a softening assembly, a driving assembly, an upper die plate, a lower die plate and the like. The workbench is connected with a protective cover; a softening assembly for heating and softening the polycarbonate plate is arranged in the protective cover; a driving assembly is arranged in the protective cover; the driving assembly is connected with an upper template; the driving assembly is used for driving the upper template to move up and down; the workbench is connected with a lower die plate, and the upper die plate is right opposite to the lower die plate. According to the invention, the corners of the polycarbonate plate are supported through the upper supporting plate and the lower supporting plate, so that the deformation or damage of the corners of the polycarbonate plate is reduced; the air flow for cooling the polycarbonate plate is recycled, so that after the polycarbonate plate is cooled by the air flow to become hot air, the upper template and the lower template are preheated by the hot air, and energy conservation is facilitated.

The invention discloses a prepreg tape interlayer modification and enhancement method for automatic fiber laying, and belongs to the technical field of automatic fiber laying. The prepreg tape interlayer modification and enhancement method comprises the steps of online thermal softening, plasma thermal excitation nanometer material dispersion, hot air flow auxiliary deposition and air cooling solidification. Uniform and stable deposition of uniformly dispersed nano materials on the surface of the prepreg tape is realized, and a'physical interlocking 'modified enhanced interface is constructed, so that the interlayer bonding strength of the prepreg tape is improved. The problems that in the background technology, conventional nano modification is prone to particle aggregation, uneven in dispersion and difficult to embed, and an existing modification technology is incompatible with the online high-speed production process of automatic fiber laying are solved.

The invention relates to an industrial juicer with a cleaning function for deep processing of pennisetum alopecuroides. The industrial juicer comprises a rack, and a feeding hopper, a pretreatment area and a residue-liquid separation area are arranged on the rack; the rolling feeding mechanism is used for conveying the materials into the pretreatment area in a rolling manner; the material cutting and rolling mechanism comprises a material cutting plate arranged in the pretreatment area, a material cutting blade is movably mounted on the outer side of the material cutting plate, and a material crushing compression roller is mounted on the bottom side of the material cutting blade; the thermal softening material guide mechanism is used for performing heating softening treatment on the rolled and squeezed materials and conveying the materials to the slag-liquid separation area; the juice separating device comprises a primary filter cartridge and a secondary filter cartridge, an end cover plate is fixedly connected to the top of the secondary filter cartridge, a slag outlet is formed in the end cover plate, and a material lifting auger is rotationally arranged on the end cover plate; the device further comprises a juice collecting mechanism, a residue collecting groove and a cleaning device. According to the juicer, it can be guaranteed that the juicing process is smoothly advanced, the juicing effect can be effectively improved, and cleaning operation of the juicer can be effectively facilitated.

The present application relates to the field of precision machining detection, and discloses a hydraulic shaft sleeve machining detection system and detection device, which comprises a pneumatic servo control module, a signal acquisition and processing module and a thermal inversion calculation module.The pneumatic servo control module drives the overturning cylinder to apply a composite pressure waveform comprising a static reference and a periodic jitter component to the hydraulic sleeve; the signal acquisition and processing module performs frequency domain analysis on the displacement signal detected by the displacement sensor to separate the average displacement and displacement amplitude; the thermal inversion calculation module calculates the real-time dynamic stiffness according to the displacement amplitude, inversely calculates the temperature rise value using a material stiffness thermal softening model, and separates the thermal expansion and elastic deformation error through multi-dimensional error decoupling operation to calculate the standard temperature and real height data under no external force.The present application effectively solves the oil film and thermal deformation interference by using active excitation and frequency domain analysis technology, and realizes high-precision online detection and machining compensation of the thermal workpiece.

The utility model discloses a novel bottom lining plate for a coke guide grid of a coke barrier. The novel bottom lining plate comprises a lining plate main body, square counter bore bolts, a protection assembly and an auxiliary assembly, square bolt counter bores are formed in the end face of the lining plate body at equal intervals, and the lining plate body is installed at the square bolt counter bores through cooperation of square counter bore bolts and nuts. A latticed rib plate is fixedly arranged on the back of the lining plate main body, and the protection assembly and the auxiliary assembly are arranged on the lining plate main body; the wear-resisting base plate is arranged at the front end of the lining plate body to be matched with the wear-resisting embedded plate, so that the service life of the lining plate body is prolonged, meanwhile, wear of the square counter bore bolts is reduced, the square counter bore bolts are prevented from being heated and softened through the heat-insulating cushion blocks, and the mounting stability of the lining plate body is guaranteed through heat-insulating protection of the square counter bore bolts; and the coke guide grid bottom lining plate main body is prevented from falling off when the coke guide car pushes coke.

The present application relates to the field of material mechanical property characterization, in particular to a high-temperature thermal softening variable stiffness and strength metal elastic-plastic parameter global characterization method, comprising: obtaining strain field data and temperature field data of the test piece, and tensile load data; constructing a thermal-mechanical coupling elastic-plastic constitutive model of the metal plate, and establishing a target function of temperature-related parameters to be solved under the constraint of multiple virtual fields based on the virtual work principle; accurately identifying high-temperature thermal softening elastic parameters by using elastic stage data, and then identifying anisotropic strength thermal softening plastic parameters by using composite field data of the whole loading process under variable stiffness; the present application breaks through the condition restriction of constant stiffness when characterizing thermal-mechanical coupling properties of metal materials by using existing test methods, and can realize global accurate characterization of high-temperature thermal softening and anisotropic complex elastic-plastic thermal-mechanical coupling property parameters by only one test, thereby minimizing the number of tests and simplifying the test process.