505 results about "Thermal expansion" patented technology

The invention discloses heat-resistant high borosilicate glass and a preparation method thereof, and belongs to the technical field of glass production, and the heat-resistant high borosilicate glass specifically comprises the following components in parts by weight: 66-83 parts of silicon dioxide, 15-25 parts of diboron trioxide, 5-9 parts of sodium oxide, 2-4 parts of aluminum oxide, 1-4 parts of a composite fluxing agent, 0.5-1.5 parts of a composite clarifying agent and 2-6 parts of a high heat-resistant modifier. The heat-resistant high borosilicate glass obtained by the invention has a linear thermal expansion coefficient of 3.15-3.31 * 10 <-6 > / K, a thermal shock resistance cycle number of 32-37, and a thermal shock resistance cycle upper limit temperature of 590-610 DEG C.

The invention relates to a steel energy-saving curtain wall structure, and belongs to the technical field of curtain walls. The steel energy-saving curtain wall structure comprises a steel square tube, an aluminum-plastic co-extrusion frame, a nylon composite polyurethane foaming heat insulation core, an aluminum-plastic co-extrusion plate, a curtain wall plate and a foaming plastic heat insulation plate, and the aluminum-plastic co-extrusion frame is fixedly connected to one end of the steel square tube; in the environment below zero, extrusion force of water on nitrogen is increased by freezing, the nitrogen extrudes and expands the box-shaped air bag, the box-shaped air bag is kept firm all the time, the probability that the box-shaped air bag is affected by thermal expansion and cold contraction is effectively reduced, the sealing effect between the curtain wall plate and the mounting frame is further improved, and the service life of the curtain wall plate is prolonged. The heat insulation performance of the whole curtain wall can be improved, the heat load loss of temperature difference heat transfer and the load intensity of solar radiation are effectively reduced, and the building energy efficiency is improved.

According to the rare earth oxide modified Cf / ZrC-SiC composite material and the preparation method thereof, Y2O3 and Yb2O3 are uniformly dispersed and introduced into the Cf / ZrC-SiC composite material in proportion, so that the stability of a ZrO2 high-temperature phase is improved, the volatilization of SiO2 in an ultrahigh-temperature environment is inhibited, and the oxidation ablation resistance of the Cf / ZrC-SiC composite material is improved. The specific preparation method comprises the following steps: firstly, carrying out high-temperature heat treatment on a carbon fiber preform, then carrying out PyC interface deposition by adopting a chemical vapor deposition process, and then uniformly dispersing and introducing rare earth oxide into the preform by adopting ZrC and rare earth oxide mixed slurry preparation and high-frequency vibration-assisted mixed slurry injection modes; and drying to form a ceramic body. The rare earth oxide modified Cf / ZrC-SiC composite material is prepared by performing SiC matrix densification and post-high-temperature heat treatment on a formed ceramic green body and finally performing SiC surface coating by adopting chemical vapor deposition, and has the advantages of high density, small thermal expansion coefficient, excellent oxidation resistance, excellent ablation resistance and the like.

The micropump comprises a pump body, an actuator, a first base plate, a second base plate, a first sealing gasket and a second sealing gasket, the first sealing gasket is used for achieving sealing between an inlet and a liquid inlet flow channel, the second sealing gasket is used for achieving sealing between an outlet and a liquid outlet flow channel, and the first sealing gasket and the second sealing gasket are independent sealing pieces; the sealing gasket has no fixed connection relation with a sealed structure, only the first sealing gasket and the second sealing gasket deform when thermal expansion and cold contraction occur due to the influence of the environment temperature, the connection relation between the first sealing gasket and the sealed structure and the connection relation between the second sealing gasket and the sealed structure are not affected, and the sealing reliability is improved; the first sealing gasket and the second sealing gasket can generate compression deformation during compression sealing, when the environment temperature is reduced, the shrinkage amount of the first sealing gasket and the second sealing gasket is reduced, when the environment temperature is increased, the first sealing gasket and the second sealing gasket expand, the sealing gasket can be more tightly attached to a sealed structure, and the sealing effect is better.

The invention discloses an ultrahigh-temperature thermal expansion coefficient tester, which relates to the technical field of detection equipment and comprises an equipment platform, a guide rail, a fixed side and a movable side, the guide rail is arranged on the equipment platform, the fixed side is arranged on one side of the equipment platform, and the movable side is arranged on the guide rail in a sliding mode. The fixed side comprises a displacement detection module and a bearing support; one end of the bearing support is connected with the detection end of the displacement detection module; the moving side comprises an induction heating furnace and a temperature detection module; an insertion opening is formed in the side, facing the fixed side, of the induction heating furnace, and the bearing support enters the induction heating furnace through the insertion opening. According to the invention, the measured material is heated in an induction heating manner, so that the heat loss is greatly reduced, the energy consumption ratio of the equipment is reduced, and meanwhile, the limiting temperature of the thermal expansion coefficient tester is increased. The insulating layer can reduce heat loss, improve the heating efficiency, reduce the temperature gradient in the sample and improve the test precision. And the temperature change condition is directly measured through the infrared thermometer, so that the measurement is more accurate.

The invention provides a disc laser cutting, chamfering and splitting method, and relates to the technical field of glass product processing, and the method comprises the following steps: carrying out annular shape cutting on a to-be-processed glass raw material by using Bessel laser, and determining a mark point at the center of the to-be-processed glass raw material; according to the marking points, a camera is used for marking and positioning, and coordinate values of chamfering are obtained; performing laser chamfering on the current glass raw material according to the chamfering coordinate value to obtain a chamfered workpiece; the chamfered workpiece is sequentially moved below an outer ring heating block and an inner ring heating block, outer ring waste materials and inner ring waste materials sequentially and automatically fall off through the thermal expansion and cold contraction effect, and the finished annular glass piece is obtained. The problems of high glass processing cost, poor precision and environmental pollution in the prior art are solved.

The invention relates to the field of textile detection, and discloses a fabric flame retardance analysis method based on infrared thermal imaging sensing data, which comprises the following steps: performing non-contact temperature measurement on a fabric sample in a controlled heat shock disturbance field, acquiring an infrared imaging signal sequence, and performing energy projection rearrangement on the infrared imaging signal sequence; based on the discontinuous change of the energy flow density in the primary thermal behavior field, establishing a boundary disturbance model of a local overheating region, and comparing the morphological difference between a thermal expansion path and a radiation energy attenuation region; mapping the heat potential difference of each region in the critical response diagram into an energy constraint state inside the material, and deducing time bias distribution of energy conduction; introducing a spectrum equalization function under time offset distribution, and executing asymmetric compensation on local abnormal points of the infrared response data; and based on the decomposition threshold dynamic trajectory, calculating a flame-retardant response equilibrium rate and an energy flow retention rate, and forming a flame-retardant performance evaluation index. The method has the advantage of improving the accuracy of flame retardant detection.

The utility model discloses a high temperature resistant casting which comprises a casting body, the casting body comprises a polypropylene coating layer, the outer surface of the polypropylene coating layer is coated with a graphene coating layer, the outer surface of the graphene coating layer is coated with an alkyd coating layer, the outer surface of the alkyd coating layer is coated with a boron nitride coating layer, and the outer surface of the boron nitride coating layer is coated with a boron nitride coating layer. And a heat-conducting fin is arranged on the inner wall of the casting body. Through the arrangement of the cooling fins, the heat conducting fins, the polypropylene coating layer, the graphene coating layer, the alkyd coating layer and the boron nitride coating layer, the problems that an existing casting is poor in high-temperature-resistant effect, the temperature of a casting material is too high, oxides and sulfides are likely to be easily formed at high temperature, the quality of the casting becomes poor, defects are formed, meanwhile, the temperature is too high, and the service life of the casting is prolonged are solved. Casting materials and mold materials can cause thermal wave stretching due to thermal expansion and cold contraction and the like, so that sintering and hot crack defects are caused, and the casting quality and the use effect are seriously influenced.

The invention discloses a test device for measuring the compression strength of a composite material plate, which comprises an upper box body and a lower box body, a guide column is arranged between the upper box body and the lower box body, an upper clamping assembly is arranged at the lower end of the upper box body, a lower clamping assembly is arranged at the upper end of the lower box body, and the upper clamping assembly and the lower clamping assembly have the same structure and opposite installation directions. The upper clamping assembly or the lower clamping assembly comprises two wedge-shaped clamping block units which are oppositely arranged, and the end part of the test piece is clamped between the two wedge-shaped clamping block units. The invention also discloses a test method for measuring the compression strength of the composite material plate. The test device can stably work for a long time in high and low temperature environments, meets the test requirements of a compression test, adopts a split design, is rapid in clamping, can effectively resist bending and torsional deformation, improves the test efficiency and accuracy, keeps reliable clamping all the time in the test process, and is simple in structure and convenient to operate. And the problem of clamping failure caused by thermal expansion and cold contraction is effectively solved.

The invention provides a preparation method and application of ceramic slurry for high-temperature bonding of aluminum nitride ceramics, and relates to the technical field of high-temperature ceramic materials.The preparation method comprises the following steps that firstly, an organic carrier is prepared, a polymer binder, an organic solvent, a plasticizer and a dispersing agent are weighed according to the weight ratio and stirred at the temperature of 60-70 DEG C till complete dissolution and clarification are achieved for use; 2, an inorganic functional phase is prepared, aluminum nitride powder, yttrium oxide powder and alkaline earth metal oxide powder are weighed according to the weight proportion and placed in a ball milling tank to be evenly mixed, the obtained ceramic slurry serves as a bonding layer, the tolerable temperature can reach 1000 DEG C or above and is far higher than that of metal brazing filler metal, and the ceramic slurry is suitable for severe environments such as aerospace and high-temperature sensors. The main components of the bonding layer are consistent with the base material, and the thermal expansion coefficient is highly matched, so that the thermal stress can be greatly relieved, and the failure of the device caused by thermal fatigue in the temperature cycle is avoided.

To provide a photoacoustic wave generation sheet that efficiently generates a photoacoustic wave for sample excitation without using high-intensity pulse light or special petri dishes.SOLUTION: A photoacoustic wave generation sheet 71 is used in photoacoustic measurement of a sample 2 placed in contact with a first surface 3a of a sample contact body 3. The sheet 71 is placed in contact with a second surface 3b located on an opposite side of the first surface 3a. The sheet 71 comprises a light reflector 73, light absorbers 74, and a photoacoustic wave generator 72. The light reflector 73 reflects measurement light L2. The light absorbers 74 are present at positions shifted in a surface direction of the sheet 71 from the light reflector 73, in order to absorb exciting pulse light L1 and convert it to heat energy. The light-permeable photoacoustic wave generator 72 is placed in contact with the light absorbers 74, and its thermal expansion coefficient is larger than that of the light absorbers 74.SELECTED DRAWING: Figure 3

The invention discloses a manufacturing method for preventing a pole piece from cracking and the pole piece, and the method comprises the following steps: preparing double-layer composite slurry with matched thermal expansion coefficient gradient, coating the double-layer composite slurry on the surface of a copper foil, and coating surface slurry on bottom slurry; the coated pole piece sequentially passes through a copper foil side infrared radiation heating area, a coating surface cold and hot air alternate drying area and an alternating magnetic field treatment area, bottom layer slurry is preferentially shrunk through infrared radiation, surface layer solvent gradient volatilization is controlled through cold and hot air alternation, and a magnetic field induces graphene to be directionally arranged so as to fill microcracks; performing pulse laser scanning on the dried pole piece, and softening a surface adhesive to realize in-situ self-repairing; coating strain distribution is monitored in real time, and drying parameters are dynamically adjusted. Compared with the prior art, the manufacturing method can effectively prevent cracks from appearing on the surface of the pole piece.

The invention discloses a heat distribution pipeline heat preservation and energy saving device, and relates to the technical field of pipeline heat preservation, in particular to a heat distribution pipeline heat preservation and energy saving device which comprises a heat distribution pipeline and an outer pipe wrapping the heat distribution pipeline, and a rubber pipe capable of deforming is arranged between the heat distribution pipeline and the outer pipe. Through the thermal expansion and cold contraction characteristics of inert gas filled in the extrusion cavity and the arrangement that the first heat preservation cabin is communicated through the first communication opening, when the external environment temperature distribution is uneven, the inert gas in the extrusion cavity of the perpendicular incidence face expands to push the rubber pipe to deform; carbon dioxide in a first heat preservation cabin in a compressed area is transferred to the shady side through a first communication opening, a heat preservation gas layer on the shady side is promoted to expand and thicken, and meanwhile a main movable plate is driven to rotate around a limiting column so that the whole heat preservation structure can deviate. The purposes of dynamically adjusting the thickness of the heat-preservation air layer according to the environment temperature difference, strengthening the heat-preservation effect of the shady face and reducing heat loss are achieved.

The invention provides a temperature stress releasing structure for a super-long steel structure building, the super-long steel structure building comprises a frame structure formed by columns and beams, the temperature stress releasing structure comprises a sliding support assembly arranged between the columns and the beams in the length direction of the frame structure, one end of each beam is in sliding fit with the sliding support assembly, and the other end of each beam is in sliding fit with the sliding support assembly. The other end of the beam is connected with an adjacent steel column, and the sliding support assembly comprises a cylinder in sliding fit with the beam. The material can generate the phenomenon of thermal expansion and cold contraction when the temperature changes, at the high temperature, the material expands and shows tension force, the distance between the beam used for releasing the temperature stress and the adjacent steel column becomes small, at the low temperature, the material shrinks and shows shrinkage force, and the distance between the beam used for releasing the temperature stress and the adjacent steel column becomes large. The internal temperature stress of the material is remarkable, the temperature stress is directly released through the sliding support assembly, the effect is remarkable, more convenience is achieved, and additional operation is not needed.

The invention provides a doped yttrium hydride neutron moderation material and a preparation method and application thereof, and belongs to the technical field of radiation shielding materials. At least one of samarium, europium and gadolinium is doped in yttrium hydride in the form of hydride, and the mass ratio of metal yttrium to metal gadolinium to metal europium to metal samarium is controlled, so that the neutron moderation effect of the neutron moderation material can be improved. According to the invention, at least one of gadolinium hydride, europium hydride and samarium hydride is mixed with yttrium hydride under the protective atmosphere, so that the mass content of each element in the doped yttrium hydride neutron moderation material can be accurately controlled. According to the invention, the mixture is sintered and molded, and the sintering parameters of sintering and molding are controlled, so that the components of the mixture are sintered in a compact state, cracks generated by thermal expansion and cold contraction can be reduced, and the doped yttrium hydride keeps high density and has fewer cracks and defects.

The invention belongs to the technical field of sliding component casting, and particularly relates to a cast iron sliding component and a preparation method thereof.The cast iron sliding component is made of silicon solid solution ferrite nodular cast iron, the structure of the material is uniform and single ferrite, and the cast iron sliding component comprises, by mass, 2.90%-3.20% of C, 3.9%-4.35% of Si, smaller than or equal to 0.4% and not larger than 0 of Mn, smaller than or equal to 0.04% and not larger than 0 of P, smaller than or equal to 0.02% and not larger than 0 of S and the balance Fe and inevitable impurities. The alloy comprises the following components in percentage by weight: less than or equal to 0.020% of S but not 0, 0.040-0.060% of Mg, 0.005-0.009% of Sb and the balance of iron and inevitable trace elements. The sliding component has a full-ferrite matrix structure and is good in structure uniformity, machining residual stress is reduced, meanwhile, the thermal expansion coefficient is reduced, nitriding deformation is avoided, annealing heat treatment is not needed after casting knockout and before honing, secondary honing after nitriding is omitted, and the non-uniformity of the final nitriding structure is reduced.

To provide an efficient production method of spherical zeolite suitable for obtaining a composition having low viscosity and having a low thermal expansion coefficient after curing.SOLUTION: In a production method of spherical zeolite having d6r as CBU, a zeolite synthesis raw material gel is configured to include a surfactant.SELECTED DRAWING: None

The invention relates to a ceramic-based composite material / environmental barrier coating bonding layer integrated preparation method, which is characterized in that an EBC bonding layer is introduced in the preparation process of a composite material through dipping-curing-cracking process treatment, so that the composite material is prevented from being subjected to high temperature again, the mechanical property of the composite material is ensured, and the preparation efficiency of a coating is improved; a SiBCX ceramic coating is prepared on the surface of a composite material by adopting a ceramic precursor containing silicon and boron, and an EBC coating bonding layer with the thermal expansion coefficient close to that of the composite material is formed. The bonding layer is prepared from the ceramic precursor, so that thermal mismatching of the bonding layer can be effectively avoided, the temperature resistance level of the environmental barrier coating is improved, and meanwhile, the preparation efficiency of the environmental barrier coating can also be improved.

The invention relates to the technical field of composite material testing, and discloses a composite material testing device based on extreme temperature and a testing method thereof. The moving frame is slidably mounted on one side of the guide rail, and pull ropes are arranged on the upper surface and the lower surface of the moving frame; the at least two pull pressure sensors are symmetrically mounted at the bottom end and the top of the inner side of the movable frame; the connecting rope is fixed at one end of the tension and pressure sensor, and one end of the connecting rope is connected with a tested composite material; the device is simple and convenient to operate, greatly improves the testing efficiency, improves the temperature difference change by shortening the operation time, reduces the influence of the environment temperature, further improves the measurement accuracy under the extreme temperature change, can well verify the stress change formed by thermal expansion and cold contraction at the extreme temperature, and improves the practicability.

The invention discloses a high-temperature-resistant epoxy resin-based mold prepreg as well as a preparation method and application thereof, and belongs to the technical field of resin-based composite materials. The preparation method comprises the following steps: mixing and stirring the epoxy resin A and the heat-conducting filler, and grinding to obtain a premix I; mixing and stirring a curing agent and epoxy resin B to obtain a premix II; mixing and stirring the premix I and the premix II to obtain a mixture; and coating release paper with the mixture, covering the release paper with fiber cloth, and carrying out hot-pressing impregnation to obtain the high-temperature-resistant epoxy resin-based mold prepreg. The invention also discloses the high-temperature-resistant epoxy resin-based mold prepreg prepared by the method and application of the high-temperature-resistant epoxy resin-based mold prepreg in preparation of a composite material mold. The prepreg prepared by the method has excellent high temperature resistance, low thermal expansion coefficient and high heat conductivity coefficient, and the service life of a composite material mold can be greatly prolonged.

The invention discloses an in-situ device and method for measuring curvature change of a sample in an ion irradiation process, and the in-situ device comprises a sample clamping and beam measurement assembly which is used for positioning the sample in the irradiation direction of an ion beam, can achieve the safe clamping of the sample and the free generation of curvature change at the same time, and is used for measuring the curvature change of the sample. The measurement of irradiation fluence, temperature and curvature can be realized at the same time; the temperature measurement and control assembly can measure and control the temperature of the sample; the in-situ profile measurement assembly can realize in-situ surface curvature measurement of the sample in the irradiation and heating processes; the vacuum component is used for providing a vacuum environment for the components; and the in-situ device is arranged at the terminal of the ion accelerator to measure the curvature change of the sample in the ion irradiation process. The method can be used for researching material size change, modulus, thermal expansion rate change and the like caused by factors such as defects, crystal growth and helium bubbles in the irradiation process of materials, and provides means for research, development, screening and evaluation of nuclear materials.

The invention provides a polyurethane composite material as well as a preparation method and application thereof, and relates to the field of polyurethane materials. The polyurethane composite material comprises the following components or is formed by the following raw materials in parts by weight: 100 parts of a polyurethane prepolymer; 10 to 40 parts of modified whisker; 5 to 20 parts of modified nanofiber; the modified crystal whiskers are crystal whiskers modified by a first isocyanate modifier and a first free radical modifier, and the chain extender is modified by a second isocyanate modifier and a second free radical modifier; the modified nanofiber is a nanofiber modified by a first diisocyanate type modifier and a second free radical type modifier. According to the polyurethane composite material provided by the invention, grafted and modified whiskers and nanofibers are introduced and directly react with polyurethane to form a molecular-level interpenetrating network, so that the linear thermal expansion coefficient of the polyurethane material is remarkably reduced, and meanwhile, the mechanical property of the polyurethane material is improved.

The invention relates to the technical field of heat treatment, and discloses a heat treatment process and heat treatment equipment for a nanocrystalline magnetic core, the heat treatment equipment comprises a bottom plate I, the top of the bottom plate I is fixedly connected with a base, the heat treatment equipment further comprises a heating mechanism, the heating mechanism comprises a heating frame fixedly connected to the inner wall of the base, and the outer wall of the heating frame is fixedly connected with a cooling fan; by arranging the heating mechanism, the device abandons traditional bolt fastening and other fixing modes, the placing assembly can be rapidly fixed or disassembled only by lifting a connector at the top, the operation process is simple and efficient, the time for replacing and installing a magnetic core of equipment is greatly shortened, and the replacement efficiency of the magnetic core of the equipment is improved. Meanwhile, by means of the physical characteristic that materials expand with heat and contract with cold, the fastening effect between the containing assembly and the equipment body can be enhanced in the heating state, it is guaranteed that the magnetic core does not displace or shake in the hot working process, and the hot working effect of the equipment is improved.

The invention relates to the technical field of thermal barrier coatings, in particular to a gadolinium oxide and aluminum oxide co-doped modified YSZ: Dy thermal barrier sensing coating material as well as a preparation method and application thereof. The invention provides a thermal barrier sensing coating material. The chemical composition of the thermal barrier sensing coating material is Y Gd Al < c > Zr < d > DeyOf, wherein a is equal to 0.01 to 0.04, b is equal to 0.15 to 0.35, c is equal to 0.40 to 0.60, d is equal to 0.35 to 0.70, e is equal to 0.01 to 0.02, and f is equal to 1.50 to 1.70. The temperature measurement upper limit of the thermal barrier sensing coating material is 1200 DEG C, and the average thermal expansion coefficient is increased by 18% at the room temperature of 1200 DEG C, so that the thermal shock resistance of the thermal barrier sensing coating is effectively improved, and the service life of the thermal barrier sensing coating is prolonged.

Provided is a glass which can replace a Li2O-Al2O3-SiO2-based crystallized glass and which has a low coefficient of linear thermal expansion and excellent light transmittance. A glass characterized by containing, in mass%, 45 to 80% of SiO2, 10 to 30% of Al2O3, 0 to 12% of B2O3, and 0 to 5% of Li2O.

A method of integrating a first substrate having a first surface with a first insulating material and a first contact structure with a second substrate having a second surface with a second insulating material and a second contact structure. The first insulating material is directly bonded to the second insulating material. A portion of the first substrate is removed to leave a remaining portion. A third substrate having a coefficient of thermal expansion (CTE) substantially the same as a CTE of the first substrate is bonded to the remaining portion. The bonded substrates are heated to facilitate electrical contact between the first and second contact structures. The third substrate is removed after heating to provide a bonded structure with reliable electrical contacts.

The present invention provides a susceptor comprising: a base member; and a dielectric plate adhered to the base member by means of an adhesive layer, wherein the base member is a metal-ceramic composite, and a thermal expansion coefficient ratio of the metal-ceramic composite to a ceramic material of the dielectric plate is less than 1.5 in the entire temperature range of -100℃ to 200℃.

Provided is an alloy having a high strength and a low thermal expansion coefficient. The alloy according to the present disclosure includes a chemical composition containing, in mass %: C: 0.10% or less, Si: 0.50% or less, Mn: 0.15 to 0.60%, P: 0.015% or less, 5: 0.0030% or less, Ni: 30.0 to 40.0%, Cr: 0.50% or less, Mo: 0.50% or less, Co: 0.250% or less, Al: 0.0150% or less, Ca: 0.0050% or less, Mg: 0.0300% or less, N: 0.0100% or less, O: 0.0300% or less, Pb: 0.0040% or less, and Zn: 0.020% or less, one or more elements selected from the group consisting of Nb: 0 to less than 0.145%, Ti: 0 to less than 0.145%, and. V: 0 to less than 0.145%: 0.015 to less than 0.145% in total, with the balance being Fe and impurities, and satisfying Formula (1).(Nb+3×Ti+V) / (C+N)≤6.00  (1)

The utility model relates to the technical field of PEEK shaft sleeves, and discloses a PEEK shaft sleeve for isolating shaft current, which comprises a shaft, the right side of the outer surface of the shaft is sleeved with a PEEK shaft sleeve, and the right side of the outer surface of the PEEK shaft sleeve is provided with a glue groove. According to the PEEK shaft sleeve for isolating the shaft current, through the arrangement of only one group of PEEK shaft sleeves, the PEEK shaft sleeve is convenient to install, does not have any influence on other parts, is a simple and feasible scheme, can effectively isolate the shaft current and prevent electrocorrosion of a bearing, is low in cost and does not need regular maintenance, meanwhile, the PEEK shaft sleeve is made of a PEEK material, and the PEEK material has relatively high mechanical performance, so that the shaft current can be isolated effectively. Compared with other plastic materials, the composite material has the advantages of higher mechanical rigidity, high temperature resistance, corrosion resistance, thermal expansion coefficient close to that of metal and small humidity influence, so that the composite material can provide a stable size in a wide-temperature and high-humidity environment, can ensure a stable matching relationship between the composite material and a bearing and a shaft, and ensures the system stability.

The present invention relates to a high-temperature oxygen-free online cyclization device. A horizontal conveying mechanism and a temperature-averaging heating system are set up in the inner cavity of a box body. The conveying mechanism comprises a plurality of temperature-averaging heat conduction plates arranged in parallel along the conveying direction. The conveying mechanism also comprises a plurality of pressing rollers located above the temperature-averaging heat conduction plates and cooperating with adjacent temperature-averaging heat conduction plates to flatten a material film. A pressure-stabilizing nitrogen cavity is provided in an electric heating plate in the temperature-averaging heating system. A plurality of nitrogen outlet holes are provided on the bottom surface of the electric heating plate in the upper heating mechanism and on the top surface of the electric heating plate in the lower heating mechanism. Nitrogen inlets communicating with the pressure-averaging nitrogen cavity are provided on the side walls on both sides of the electric heating plate. A circulation pipeline is provided outside the box body. The present invention effectively prevents oxidation of materials due to high temperature by introducing nitrogen into the temperature-averaging heat conduction plate, reduces thermal expansion and contraction of the temperature-averaging heat conduction plate, and improves the temperature-averaging performance of heating, so that temperature-averaging heating of various precision materials at different temperatures can be achieved under different temperature conditions.