240 results about "Thermo mechanical" patented technology

The invention discloses a thermal deformation prediction and optimization method and system in metal plastic composite product processing, and the method comprises the steps: building a composite product geometric model according to the material characteristics and preset boundary conditions of a composite product; according to the geometric model of the composite product, a finite element analysis method is used, a preset time step length and a nonlinear solver are selected for coupling solving of a thermal field and a mechanical field; the change data of the temperature field and the stress field along with time and thermomechanical circulation are analyzed through simulation, accumulated deformation and interface stress data of the material in circulation of the preset number of times are monitored, and a simulation prediction result is generated; and according to the simulation prediction result, the heating and cooling rate and the mold loading path are optimized. The thermal deformation prediction and optimization method in metal plastic composite product processing can be used for solving based on multi-physics field coupling in combination with a nonlinear finite element.

An apparatus includes a structure configured to receive thermal energy and to reject the thermal energy into an external environment. The structure includes a lid and a body. The structure also includes (i) multiple inline and interconnected thermomechanical regions and (ii) one or more oscillating heat pipes embedded in at least some of the thermomechanical regions. Different portions of at least one of the lid and the body form the thermomechanical regions. The one or more oscillating heat pipes are configured to transfer the thermal energy between different ones of the thermomechanical regions. At least one of the thermomechanical regions includes one or more shape-memory materials configured to cause a shape of the structure to change. Each of the one or more oscillating heat pipes includes at least one channel in the structure.

The invention discloses a non-standard precision part production method and system, and the method comprises the steps: collecting key data in a machining process, and the key data comprise temperature, pressure, speed and vibration data; establishing a digital twinborn model, and inputting the key data into the digital twinborn model so as to simulate an actual processing process in real time; in the process of simulating the actual machining process, the thermal mechanical behavior of the material in the machining process is analyzed, and the machining process and machining parameters of the material are optimized based on the analysis result; and on the basis of an optimization result, production of non-standard precision parts is realized.

The invention belongs to the technical field of aero-engine high-temperature part test, and particularly relates to a thermal mechanical composite fatigue test device in a turbine blade rotation environment, which comprises a high-temperature gas system, a stator system, a rotor system, a support system, a test system, an auxiliary system and a turbine rotor blade test piece, the high-temperature fuel gas system is used for providing a fuel gas environment for a turbine rotor blade test piece and controlling the high-low temperature circulation state of fuel gas, a combustion chamber is arranged at the front end of the high-temperature fuel gas system and provided with a double-oil-way nozzle, a fuel gas flowing system is arranged at the rear end of the high-temperature fuel gas system, and a blade grid structure is designed for the fuel gas flowing system according to the geometrical shape of a turbine rotor blade. And a spray cooling section is arranged at the rear part of the test section. The device is composed of six core systems including a high-temperature fuel gas system, a stator system, a rotor system, a supporting system, a testing system and an auxiliary system, all the systems work cooperatively, and integrated simulation of the high-temperature fuel gas environment, rotating centrifugal loads and heat-force synchronous circulation is achieved.

The invention provides a manufacturing method of a glass substrate with a conductive through hole and a chip packaging structure, and the method comprises the steps: providing a glass substrate which comprises a first surface and a second surface which are opposite to each other; forming a first through hole through which the first surface of the glass substrate penetrates to the second surface; forming a conductive column in the first through hole, wherein a gap is formed between the conductive column and the first through hole; and forming a buffer layer between the conductive column and the inner wall of the first through hole, wherein the buffer layer at least covers the inner wall of the first through hole and the side wall of the conductive column. According to the invention, through the method of firstly manufacturing the conductive column and then forming the buffer layer, the step of directly depositing a high-quality insulating film in the first through hole with relatively high difficulty and cost is avoided, the demand on deposition equipment is reduced, the material and time cost is saved, and the production yield is improved. Meanwhile, the buffer layer is actively filled between the conductive column and the glass substrate, so that the thermal mechanical stress is more effectively absorbed and released, and the product quality of the glass substrate with the conductive through hole is improved.

The invention discloses a high-performance zinc alloy with a gradient structure and a preparation method and application thereof, and belongs to the technical field of metal material processing. The high-performance zinc alloy with the gradient structure is characterized in that the grain sizes of upper, middle and lower areas of the alloy are in fine-coarse-fine distribution, the grain sizes of the upper and lower areas are smaller than or equal to 2 microns, the grain size of the central area is 5-20 microns, and the grain size of a transition area between the upper and lower areas and the central area is 2-15 microns; meanwhile, all the areas are accompanied with MnZn13 nano precipitated phases with the size smaller than or equal to 50 nm. The alloy shows excellent deformation resistance and thermal mechanical stability, the elasticity modulus of the alloy can at least reach 125 GPa, meanwhile, the alloy shows excellent corrosion resistance, and the alloy is particularly suitable for biomedical implantation instruments such as intravascular stents and bone nails.

Provided is an electrical steel strip friction stir welding method that is able to inhibit the occurrence of coil joint fractures on a production line caused by deterioration of mechanical properties and shape of the coil joint while maintaining high work efficiency. In the method, preheated double-sided friction stir welding is performed, and joining is performed under conditions that steel microstructures of a joined portion and a thermo-mechanically affected zone formed by joining become mainly ferrite phase, respectively, and the relationships of the following Expressions (1) to (4) are simultaneously satisfied, Dsz≤200 μm . . . (1), Dhaz1≤Dbm1 . . . (2), Dhaz2≤Dbm2 . . . (3), and 0.9×(Hbm1+Hbm2) / 2≤Hsz≤1.2×(Hbm1+Hbm2) / 2 . . . (4).

The invention relates to the technical field of surface treatment of mechanical parts, in particular to a self-lubricating anti-corrosion wear-resistant coating and a preparation method thereof.A transition layer is arranged between a coating substrate and a DLC layer, the transition layer contains Cr-O-W-C components, and a bottom layer, a middle layer and a surface layer are a crystal layer, a crystal-amorphous alternating layer and an amorphous layer respectively; the transition layer gradually relieves thermal / mechanical stress through collaborative optimization gradient design of components, structures and interlamellar spacing, the stripping resistance and corrosion resistance of the coating are remarkably improved, the service life of the coating is remarkably prolonged, collaborative improvement of corrosion resistance, wear resistance, self-lubricating performance and the like of the coating is further achieved, and the service life of the coating is prolonged. And finally, the double-gradient composite coating is constructed, so that the internal stress between the surface layer and the bottom layer can be relieved, long-acting corrosion prevention and a strong supporting effect on the diamond-like surface layer can be provided, the risk that the diamond-like surface layer falls off in the long-acting service process due to galvanic corrosion is relieved, the service life of parts is prolonged, and the equipment safety is improved.

The invention belongs to the technical field of metal materials, and relates to a CoNiVAlX (x is greater than or equal to 0 and less than or equal to 0.5) multi-principal-element heterostructure entropy alloy system and a preparation method thereof. The chemical composition (atomic percent) of the alloy contains Co, Ni, V, Al and a trace regulator, flexible matching of strength and toughness is realized in a wide temperature range of-263 DEG C to 800 DEG C by regulating the Al content and a thermal mechanical treatment process, and various mechanical states such as'high ductility-medium strength 'and'high strength-medium ductility' can be obtained; the preparation process is based on a mature metallurgical technology and does not depend on special equipment, and large-size stable preparation can be achieved. Tests prove that the alloy system is wide in toughness and adjustable, the toughness balance in a wide temperature range is realized, the application requirements in an extreme environment are met, and the alloy system has a good industrial popularization prospect.

The invention discloses a preparation process of a high-strength corrosion-resistant stainless steel fastener. The preparation process comprises the steps of material modification, warm upsetting forming, stabilizing treatment, cryogenic strengthening, gradient aging, surface treatment, post-treatment and the like. According to the process, the alloy component proportion is optimized, a thermal mechanical treatment technology of warm upsetting forming, subzero treatment and gradient aging is combined, a nano-composite coating and micro-arc oxidation sealing process is innovatively introduced, and the process comprises vacuum melting and controlled rolling of customized high-nitrogen stainless steel wires, deformation-induced martensite regulation in warm upsetting forming, low-temperature hot rolling, high-temperature hot rolling, high-temperature hot rolling, high-temperature hot rolling, high-temperature hot rolling and high-temperature hot rolling. The tensile strength and the salt spray corrosion resistance of the fastener are remarkably improved through deep cooling-medium temperature aging synergistic strengthening, double-layer nano TiN / CrN composite coating deposition and micro-arc oxidation micropore sealing treatment, the problem that a traditional stainless steel fastener is insufficient in strength and low in stress corrosion sensitivity is solved through the technology, and the technology is particularly suitable for the extreme environments such as aerospace and ocean engineering.

The invention relates to the technical field of integrated circuits, electronic packaging, printing materials, processes and the like, and provides sintered copper paste for TSV hole filling and a preparation method and a filling method thereof.The sintered copper paste comprises, by weight, 50%-95% of copper particles, 1%-5% of a surfactant and 1%-5% of a solvent. The weight ratio of the surfactant in the sintered copper paste is 0.01%-5%, and the weight ratio of the solvent in the sintered copper paste is 5%-50%. The sintered copper paste is used for TSV hole filling, and can avoid the formation of holes during high aspect ratio hole filling, relieve thermal mechanical stress, reduce filling cost and realize rapid and efficient green filling.

A method for optimizing process parameters of friction stir welding with synchronous rolling and a related device are provided. A heat source model is applied to a system finite element model, and heat transfer simulation is performed on the welding and cooling processes of friction stir welding. Furthermore, contact relationships and mechanical action relationships between a stirring tool finite element model and a weldment finite element model and between a roller finite element model and the weldment finite element model are applied in the system finite element model. Thermal-mechanical simulation is performed on the welding process, the cooling process and a clamp release process of friction stir welding with synchronous rolling with a temperature field result obtained from heat transfer simulation as an input. Based on the welding stress and welding deformation results obtained from thermal-mechanical simulation, process parameters are adjusted and re-simulated until optimal parameters are obtained.

The invention relates to the technical field of inductor manufacturing, in particular to a 10kV three-element anti-resonance metering combined mutual inductor which comprises a mutual inductor body, a heat dissipation groove is formed in the bottom of the mutual inductor body, and an isolation box is arranged in the mutual inductor body. The side wall and the top of the isolation box are slidably connected with a first pressed plate and a second pressed plate correspondingly. An isolation plate I, an isolation plate II, a blocking plate I and a blocking plate II are arranged in the box from top to bottom; the limitation of a fixed heat dissipation mode in traditional inductor manufacturing is broken through, and a stress-heat dissipation self-adaptive adjusting mechanism is constructed; stress generated by materials such as epoxy resin, copper materials and silicon steel sheets due to difference of thermal expansion coefficients is sensed through a pressed plate, and different numbers of air inlets and vent holes are opened in an automatic linkage mode; intelligent switching from basic heat dissipation to enhanced fire dissipation is achieved, thermal mechanical stress is absorbed in all directions through a spring buffer system, the long-term reliability problem of internal cracks and insulation deterioration caused by material thermal mismatch in inductor manufacturing is solved, the service life of a product is prolonged, and the operation stability of the product is improved.

The invention belongs to the technical field of alloys, and provides a lightweight refractory multi-principal-element alloy with excellent high-temperature creep property, and a preparation method and application thereof. The general formula of the light refractory multi-principal-element alloy with the excellent high-temperature creep property is TiaVbAlcCrdMoe, wherein 43% < = a < = 48%, 43% < = b < = 48%, 2% < = c < = 8%, 2% < = d < = 8% and 1% < = e < = 5%, a + b + c + d + e = 100%, and a, b, c, d and e are mole percentages. The alloy presents an isometric crystal structure in a complete recrystallization state in a thermal mechanical treatment state, the phase structure is a single-phase body-centered cubic BCC structure, the alloy has low density and shows excellent creep property at 650 DEG C / 100 MPa, the creep time exceeds 90 h, and the creep elongation is lower than 10%.

The invention relates to the technical field of vehicle part manufacturing, and discloses a truck swing arm anti-impact forging method which comprises the following steps: S1, selecting low-alloy steel as a basic metal material, mixing the low-alloy steel with carbon nanotubes and silicon oxide nanoparticles, and carrying out heat treatment; wherein the carbon nanotubes and the silicon oxide nanoparticles are mixed into the metal powder according to a specific weight ratio; s2, under the protection of inert gas, the mixed metal powder is heated to 1200 DEG C, and thermal mechanical alloying is carried out at the temperature by applying mechanical pressure, so that a prefabricated blank with a uniform microstructure is formed; the impact resistance of the swing arm is remarkably improved by using the carbon nanotubes and the silicon oxide nanoparticles to reinforce the matrix metal and combining with multi-step forging and serialized heat treatment. According to the application of the composite material and the comprehensive processing technology, the microstructure of the material is optimized, so that the swing arm can bear larger impact force under extreme working conditions and cannot be broken, and the safety and reliability of a vehicle under complex road conditions are guaranteed.

The utility model discloses a hot forging die for forging two parts, which relates to the technical field of forging dies and is used for solving the problems of forging die thermal mechanical damage and poorer utilization effect of excess materials of forgings caused by demolding damping of the forgings. According to the utility model, the supporting auxiliary die sleeve, the lower die base body and the lower die piece are mainly arranged, so that the total amount of contact heat enrichment of the forging die is reduced, and the thermal mechanical damage of demolding damping generated by forging to the forging die is reduced. By arranging the first separation piston rod, the lower core die, the separation cavity and the lower die piece, the bearing pressure of the forge piece can be discretely distributed, the utilization input cost of excess materials of the forge piece is reduced, and the possibility of thermal mechanical damage of the forging die is reduced. By arranging the lower core die, the lower die piece and the wad die sleeve, the forging quality and the machining manufacturability of forging forming are improved, and the thermal contact temperature peak value of the forging die is reduced.

The invention relates to the technical field of austenitic stainless steel, in particular to high-toughness large-expansion austenitic stainless steel and a preparation method thereof, and the high-toughness large-expansion austenitic stainless steel comprises the following alloy components in percentage by weight: 0.45 to 0.65 weight percent of C, 6.0 to 9.0 weight percent of Mn, 6.5 to 10.0 weight percent of Ni, 8.0 to 12.0 weight percent of Cr, 1.5 to 3.0 weight percent of Mo, 0.8 to 2.0 weight percent of V, 1.5 to 4.0 weight percent of Cu, 0.015 to 0.045 weight percent of Nb, 0.035 to 0.100 weight percent of Ti and the balance of Fe. The thermal expansion coefficient of the obtained steel is superior to that of the prior art, the yield strength is larger than 950 MPa, the percentage elongation after fracture is larger than 15%, sensitization characteristics caused by grain boundary Cr carbides are avoided, the steel is composed of pure FCC austenite with stable thermal mechanical performance, and martensite and deformed or high-dislocation-density austenite are avoided.

Recycling process for a coated film, wherein the film is a so-called current collector film of a lithium-ion cell film, wherein the coated film has a metallic carrier film on which a coating is applied by means of a thermoplastic binder, comprising the steps: - Heating the coated film to a binder softening temperature, - applying a mechanical separation stress to the coated film in such a way that the coating and the metallic carrier film separate at least partially under the influence of this stress, - Separating the metallic carrier foil and the coating into at least two different material batches, one of these batches comprising at least substantially the metallic carrier foil and the other batch comprising at least substantially the coating.

The invention discloses a ceramic guide rail for an ultra-precision machining and ultra-precision measuring instrument and a preparation method of the ceramic guide rail in the field of ceramic materials. The ceramic guide rail comprises the following raw materials: 40-58% of nano alpha-Al2O3; 10 to 15% of titanium carbide; 5-8% of boron nitride; 5% to 10% of a Y2O3-MgO compound; 3-5% of zirconium oxide; 1 to 2 percent of La2O3; 0.5 to 1.5 percent of graphene; and 2 to 5% of nano CeO2 coated Al2O3 core-shell particles. The ceramic guide rail disclosed by the invention has excellent wear resistance, dimensional stability and thermal mechanical property, and is particularly suitable for guiding parts of ultra-precision machining equipment and measuring instruments.

The invention relates to the technical field of cable materials, discloses a crosslinked polyethylene insulated power cable and a preparation method thereof, and aims to solve the problems that harmful by-products are introduced and complicated degassing is needed in the conventional chemical crosslinking material. According to the material, a hierarchical dual-network structure composed of a physical cross-linked network and a dynamic covalent cross-linked network is constructed through components such as matrix resin, a dynamic network functional monomer and a physical network functional nanofiller. The preparation method comprises the following steps: preparing a hierarchical network precursor by reactive grafting in a twin-screw extruder, and devolatilizing; in the cable extrusion process, network in-situ curing is achieved through cooling, and traditional high-temperature crosslinking and degassing steps are omitted. According to the scheme, crosslinking by-products are fundamentally avoided, it is ensured that the material has excellent electrical properties, thermal mechanical properties and long-term reliability, the preparation process is remarkably simplified, and meanwhile the material has the thermally induced self-repairing potential.

Disclosed herein are thermal management devices and electronic devices that utilized a plurality of plunger assemblies to route heat efficiently from chip packages. In some examples, the thermal management devices may also be used in electronic devices to route heat efficiently from power delivery layer residing below chip packages. In one example, a thermal management device is provided that includes a plurality of plunger assemblies retained to a metal plate. Each plunger assembly includes a metal body extending normally through an aperture formed between first and second sides of the plate and a spring biasing a distal end of the metal body away from the second side of the plate.

The invention provides a Mn-Fe-Ni-Si-Cu-based negative thermal expansion material as well as a preparation method and application thereof, and belongs to the technical field of negative thermal expansion materials. The negative thermal expansion temperature range of the Mn-Fe-Ni-Si-Cu-based negative thermal expansion material provided by the invention covers the high-temperature and low-temperature ranges (120K-896K), and the high-temperature and wide-temperature-range negative thermal expansion effect is shown; good mechanical properties are achieved; the material has extremely high thermal and mechanical stability, and has important significance for developing high-temperature precision mechanical devices based on zero expansion. The Mn-Fe-Ni-Si-Cu-based negative thermal expansion material disclosed by the invention is low in raw material cost and simple in preparation method.

A polyamide suitable for making drawn polyamide yarn which exhibits (i) an RV of about 90 to about 200; and (ii) a polyamide molecular weight distribution characterized by Mz / Mw in the range of ≥ 1.40 and ≤ 1.50 ±0.03.

A vertical separator apparatus and method position the feed inlet above the lowest rotating vane (14), ensuring all feed material receives mechanical vane impact and is thrown centrifugally against a perforated screen (22). Three-way separation results: resilient materials are propelled upward by elastic rebound; low-density materials are lifted pneumatically to a top discharge (18); and moisture-laden organics are centrifugally dewatered and sink back against a single upward air flow to a bottom discharge (26). The apparatus converts kinetic energy from vane friction into heat to assist drying and optionally utilizes froth-assisted separation where bubble nucleation provides a buoyancy boost to hydrophobic plastics. An adjustable aperture at the bottom discharge regulates material retention time. Safe, low-temperature thermal enhancement at 40-90 degrees C. reduces contaminant viscosity to enable thermomechanical cleaning of plastic surfaces without phase change or fire risk.

An aluminium alloy sheet includes an aluminium alloy, wherein the aluminium alloy includes: 0.15 wt. % to 0.25 wt. % of Si, 0.80 wt. % to 1.00 wt. % of Fe, 0.08 wt. % to 0.12 wt. % of Cu, 0.55 wt. % to 0.70 wt. % of Mn, 0.30 wt. % to 0.40 wt. % of Mg, equal to or less than 0.05 wt. % of each other element, and aluminium as balance. A thermomechanical method for producing such aluminium alloy sheet includes an specific scheme of heating and rolling stages; and the use of such aluminium alloy sheet for manufacturing an aluminium closure, preferably an aluminium cap, for bottles, cans or other similar containers.

An internal combustion engine includes a cylinder head with an exhaust manifold coupled to the cylinder head and a turbocharger coupled to the exhaust manifold. The exhaust manifold comprises one or more exhaust passages in fluid receiving communication with one or more cylinders of the internal combustion engine. The exhaust manifold further comprises a flange having one or more openings in fluid receiving communication with the one or more exhaust passages. The openings are configured to increase thermomechanical failure life in the exhaust manifold flange.

The invention relates to the technical field of a plasma spraying process of a high-corrosion-resistance yttrium oxide coating and a gradient structure design method, and particularly discloses the plasma spraying process of the high-corrosion-resistance yttrium oxide coating and the gradient structure design method. The invention aims to solve the problems that a traditional plasma spraying yttrium oxide coating is high in porosity, non-uniform in microstructure, easy to crack and peel off due to mismatch of a thermal expansion coefficient and a metal matrix, and difficult to consider compactness, stress buffering and long-term stability at the same time. The method comprises the following steps: carrying out degreasing cleaning, sand blasting coarsening, ultrasonic oscillation and drying pretreatment on a substrate, carrying out high-corrosion-resistance yttrium oxide composite powder spraying by adopting plasma spraying parameters optimized by an orthogonal test, and arranging multiple layers of intermediate layers with components and thermal expansion coefficients in gradient transition between the substrate and a coating, follow-up heat treatment and nano sol hole sealing treatment are assisted. By adopting the technical scheme, low porosity, high bonding strength, excellent thermal mechanical stability and long-term corrosion resistance in a strong corrosion environment of the coating can be realized.

Disclosed is a thermo-mechanical actuator comprising a piezo-electric module, the piezo-electric module comprising at least one piezo-electric element, wherein the thermo-mechanical actuator is configured to receive a thermal actuation signal for controlling a thermal behaviour of the piezo-electric module, or provide a thermal sensing signal representative of a thermal state of the piezo-electric module. The thermo-mechanical actuator is configured to receive a mechanical actuation signal for controlling a mechanical behaviour of the piezo-electric module, or provide a mechanical sensing signal representative of a mechanical state of the piezo-electric module. And wherein the thermal actuation signal is configured to create a heat flux within the piezo-electric module and wherein the mechanical actuation signal is configured to deform the piezo-electric module.

The invention discloses steel for a hydrogen transmission pipeline and a production method of the steel, and belongs to the technical field of ferrous metallurgy, the steel comprises the following chemical components in percentage by mass: 0.03%-0.05% of C, 0.15%-0.35% of Si, 0.7%-1.30% of Mn, less than or equal to 0.015% of P, less than or equal to 0.0010% of S, 0.010%-0.030% of Nb, 0.035%-0.055% of V, 0.008%-0.030% of Ti, 0.15%-0.35% of Cr, 0.30%-0.50% of Ni, 0.050%-0.150% of Mo, 0.10%-0.20% of Cu, 0.010%-0.050% of Al, less than or equal to 0.00050% of B, less than or equal to 0.0060% of N, less than or equal to 0.0002% of According to the production method, high-purity low-carbon phosphorus-sulfur molten steel is obtained through a converter, refining and continuous casting, alloy steel mainly comprising acicular ferrite is obtained through a hot mechanical rolling technology, and the hydrogen conveying requirement of products is met.

The invention discloses a high-conductivity high-strength copper alloy thermal mechanical treatment strengthening process which comprises the following steps: firstly, heating a Cu-Ni-Be-Zr alloy cast ingot to 890-980 DEG C until the core part of the cast ingot reaches a set heating temperature, then compressing the cast ingot, carrying out water cooling at room temperature, and finally carrying out aging treatment and air cooling on the cast ingot at 480 DEG C * 3-480 DEG C * 8 hours; the Cu-Ni-Be-Zr alloy comprises the following components in percentage by weight: 1.6 to 2.5 percent of Ni, 0.25 to 0.5 percent of Be, 0.05 to 0.2 percent of Zr, not more than 0.1 percent of impurities and the balance of Cu. According to the method, the cast ingot of the Cu-Ni-Be-Zr alloy is directly subjected to thermal mechanical treatment and then subjected to aging, the process steps of forging, solid solution treatment and cold deformation in a traditional process are omitted, the performance of the treated Cu-Ni-Be-Zr alloy is basically consistent with that of the alloy obtained after the traditional production process is adopted, and therefore the Cu-Ni-Be-Zr alloy is obtained. The thermomechanical treatment combines the advantages of hot working and mechanical deformation, and the microstructure and performance of the alloy can be more efficiently improved.