535 results about "Bimetal" patented technology

The invention discloses a composite electrode material for removing uranium through photoelectrocatalysis and a preparation method and application of the composite electrode material, and belongs to the technical field of catalytic materials and wastewater treatment.The preparation method of the composite electrode material comprises the following steps that a ZIF-8 material, copper salt and ferric salt are mixed, and a first metal composite material is prepared; reacting the first metal composite material with a KOH solution to prepare a second metal composite material; carrying out carbonization treatment on the second metal composite material, and then carrying out acid treatment by using acid to obtain a bimetallic atom catalytic material; the preparation method comprises the following steps: dispersing a bimetallic atom catalytic material and a g-C3N4 material in a mixed solution containing phytic acid and a Nafion solution to obtain catalyst ink; and coating the catalyst ink on a substrate, and carrying out illumination drying to obtain the composite electrode material. According to the composite electrode material, under the synergistic effect of the bimetallic single atomic cluster catalyst and g-C3N4, respective advantages are fully exerted, and efficient deposition removal of uranium is achieved.

According to the production method of the hot-rolled copper-steel double-metal composite plate, copper is oxygen-free copper, and Cu is larger than or equal to 99.95%; the steel is low-alloy high-strength steel; the key process steps of the copper-steel composite plate comprise assembling, heating, rolling, cooling and finishing. By controlling the rolling temperature, the pass reduction rate, the cooling speed and other processes, the plate shape of the copper-steel rolled composite plate is obviously improved, the stability of the bonding surface is greatly improved, and therefore industrial production and application of the copper-steel bimetal rolled composite plate are achieved.

The utility model relates to the technical field of saw blade repairing, and discloses a bimetallic strip saw blade tooth blade repairing device which comprises a fixing frame, a transverse electric sliding rail is fixedly arranged at the top of the fixing frame, a transverse electric sliding block is arranged in the transverse electric sliding rail, and an air cylinder is fixedly arranged at the bottom of the transverse electric sliding block. An oil storage tank is fixedly mounted at the tail end of a piston rod of the air cylinder, a grinding rod is fixedly arranged at the bottom of the oil storage tank, an oil separation plate is fixedly arranged in the oil storage tank, an oil discharge pipe is fixedly arranged at the bottom of the oil separation plate, an electromagnetic valve is arranged on the pipe wall of the oil discharge pipe, and an oil discharge port is formed in the bottom of the oil storage tank and located on one side of the grinding rod; a longitudinal electric sliding rail is fixedly arranged at the bottom of the fixing frame. According to the double-metal band saw blade repairing device, the double-metal band saw blade can be automatically polished, the repairing efficiency is improved, meanwhile, cutting oil can be automatically added, the tooth edge of the saw blade is effectively prevented from being abraded, and the repairing quality is improved.

The invention belongs to the technical field of bimetal part manufacturing, and particularly relates to a method for preparing aluminum-magnesium bimetal through a pulse electromagnetic composite field and a bimetal product, and the method comprises the following steps that a casting foam model is prepared according to the preset form of a workpiece, and a solid aluminum inlay and the casting foam model are assembled to form a composite model. And embedding the composite model into a sand box. During pouring, a pulsed magnetic field and a pulsed electric field are applied to the composite model in a vacuum environment. And cooling to obtain the aluminum-magnesium bimetal product. The invention further discloses the aluminum-magnesium bimetallic product prepared through the method. The method is suitable for manufacturing aluminum-magnesium bimetal castings with complex shapes, the process is simple, the bimetal interface is easy to control, the bimetal bonding performance is good, the alloy strengthening effect is good, grain refinement is effectively achieved, interface defects are overcome, and the method is suitable for producing various related parts in the fields of automobiles, spaceflight and the like.

The invention discloses a bimetal composite plate with an X90-grade composite layer made of nickel base alloy Inconel625 and a manufacturing method of the bimetal composite plate. The bimetal composite plate comprises the following chemical components in percentage by weight: base material components including C, Si, Mn, Cr, Ni, Mo, Cu, Nb, V, less than or equal to 0.05% of Al, Ti and the balance of Fe and inevitable impurity elements; the composite material comprises the following components: less than or equal to 0.08% of C, less than or equal to 0.5% of Si, less than or equal to 0.5% of Mn, 20.0-23.0% of Cr, 8.0-10.0% of Mo, 3.15-4.15% of Nb, less than or equal to 5.0% of Fe, less than or equal to 0.05% of Al, less than or equal to 0.05% of Ti and the balance of Ni and inevitable impurity elements. According to the invention, the components are comprehensively optimized, and proper rolling and tempering processes are matched to obtain the bimetal composite plate with yield strength not lower than X90 and excellent corrosion resistance for the oil and gas transmission line pipe.

The invention discloses an inorganic normal-temperature rapid-hardening coal-rock mass reinforcing and filling material, and relates to the technical field of mine reinforcement. The material comprises a liquid A and a liquid B, the liquid A is prepared from cement, fly ash, magnetic nano silicon dioxide, citric acid and a layered bimetal oxide-sodium hexametaphosphate compound; and the liquid B comprises water glass, superfine limestone and water. During use, the liquid A and the liquid B are mixed according to the volume ratio of 1: 1 and injected into a target area, and a 1.5 Tesla magnetic field is applied at the initial stage of grouting until the grout is initially set. Through the synergistic effect of the compound protection dispersing agent, the magnetic particles and an external magnetic field, the technical problems that an existing material is unstable in performance due to temperature change, nanoparticles are prone to agglomeration, and magnetic response is attenuated in an alkaline environment are effectively solved; the technical effects of rapid solidification, high strength and excellent durability in high-temperature, low-temperature and complex mine environments are achieved.

The invention discloses a preparation method of an iron-manganese bimetallic catalytic material by using copper slag. The preparation method comprises two steps of pretreating the copper slag and preparing the iron-manganese bimetallic catalytic material. The iron-manganese bimetallic catalytic material prepared by the method belongs to a porous material, is rich in pores and large in specific surface area, is rich in Fe < 3 + >, Mn < 3 + >, Mn < 4 + > and other active sites on the surface, has the advantages of high catalytic activity, good stability and environmental friendliness, and realizes reduction and high-value utilization of the copper slag. In addition, the prepared iron-manganese bimetallic catalytic material can be used for catalyzing persulfate to form an advanced oxidation system, and is suitable for degradation treatment of organic wastewater such as printing and dyeing wastewater, pharmaceutical wastewater, food wastewater and raffinate.

The invention discloses a double-metal gradient diffusion layer modified high-nickel ternary positive electrode material and a preparation method thereof. The preparation method comprises the following steps: filtering and uniformly dispersing high-nickel ternary positive electrode material powder; introducing inert gas into the atomic layer deposition system, and raising the temperature to a target temperature; respectively preheating the metal precursors A and B to proper temperatures; the preparation method comprises the following steps: sequentially introducing a metal precursor A, precursor water, a metal precursor B and precursor water into a reaction chamber, alternately depositing according to a pulse-reaction-purging sequence, and repeatedly circulating the process to obtain the bimetallic oxide coated high-nickel ternary positive electrode material, and post-annealing treatment. According to the bimetal gradient diffusion layer modified high-nickel ternary positive electrode material prepared by the preparation method disclosed by the invention, the lithium storage performance of the high-nickel ternary material is greatly improved, excellent cycling stability and rate capability are obtained, the coating layer is accurate and controllable, the preparation process is simple, meanwhile, large-batch production can be realized, and relatively high application value is achieved.

The invention discloses pipeline steel for an acid environment, a bimetal metallurgy composite pipe and a preparation method of the bimetal metallurgy composite pipe, and relates to the technical field of manufacturing of pipes for oil and gas gathering and transportation. The pipeline steel for the acid environment comprises the following chemical components in percentage by mass: 0.07%-0.11% of C, 0.25%-0.37% of Si, 1.15%-1.35% of Mn, less than or equal to 0.012% of P, less than or equal to 0.003% of S, 0.01%-0.03% of Nb, 0.015%-0.03% of Al, 0.01%-0.025% of Ca, less than or equal to 0.005% of N, less than or equal to 0.002% of O, less than or equal to 0.00015% of H, less than or equal to 0.007% of O + H + N and the balance of Fe and inevitable impurities. The pipeline steel for the acid environment has enough strength, high toughness and good hydrogen sulfide stress corrosion resistance and hydrogen induced cracking resistance, and can meet the requirements of gathering and transportation of corrosive oil and gas.

The invention relates to the technical field of jaw crusher jaw plate machining, in particular to a bimetallic jaw crusher wear-resistant jaw plate surfacing method based on field data analysis, which comprises the following steps: S10, collecting field jaw plate operation data in real time, including wear depth distribution delta, working temperature T and impact frequency f; s20, a dynamic analysis model is constructed according to on-site jaw plate operation data, so that a comprehensive wear parameter Ke is calculated; s30, comparing the comprehensive wear parameter Ke with a set threshold value Kt; when the Ke is greater than the Kt, generating a three-dimensional surfacing thickness map, and dynamically adjusting the components of the welding wire; and S40, an automatic surfacing welding machine is adopted for executing layered surfacing welding work. According to real-time analysis of field data, the surfacing method for the jaw plate is adjusted in time, and the quality of the jaw plate is improved.

The invention discloses a preparation process of a dual-material tappet with both wear resistance and toughness, and relates to the technical field of engine tappet manufacturing, the preparation process comprises the steps of matrix pretreatment, gradient heating, infiltration compounding, diffusion heat preservation, subsection cooling and finish machining, and a wear-resistant alloy material comprises the following chemical components in percentage by weight: 3.2-3.6% of C, 0.4-0.6% of Ni, 2.4-2.5% of Si, 0.9-1.3% of Cr, 0.6-0.9% of Mn and the balance of Fe and inevitable impurities. Mo is equal to 0.4%-0.65%, and Slt is equal to 0.1%, Plt; 0.1%, with the balance being Fe and inevitable impurities. Compared with the prior art, the method has the advantages that the performance can be flexibly matched according to different engine requirements; the comprehensive performance of the working face is remarkably improved by adopting an infiltration composite process; the strength and the toughness of the matrix are improved; the double-metal bonding strength is consistent; the cost of the infiltration composite process is lower than that of brazing; the matrix in the semi-molten state and the wear-resistant material form metallurgical bonding, and the bonding strength is higher; the combined steel and the gradient cooling process jointly improve the impact resistance.

The invention belongs to the technical field of metallurgy, and particularly relates to a method for preparing an aluminum-iron composite material based on microtexture.The method comprises the steps that S1, an iron matrix is obtained and pretreated; s2, the iron matrix is placed in deionized water; s3, preparing a microstructure on the surface of the iron matrix; and S4, the iron matrix is adopted for liquid-solid composite casting to prepare the aluminum-iron composite material. On one hand, the micro-texture prepared in deionized water is more uniform, the roughness is reduced compared with that of the micro-texture prepared in air, and the wettability of an aluminum alloy melt when the aluminum alloy melt makes contact with an iron matrix is well improved; and on the other hand, when the micro-texture is prepared in the deionized water, the deionized water can effectively enable slag generated when the surface of the iron matrix is subjected to laser etching not to be deposited in the micro-texture any more, so that the interior of the micro-texture is more uniform and smoother, the filling rate of an aluminum alloy melt is effectively increased, and the problem of interface cracking after aluminum-iron bimetal solid-liquid compounding is solved.

The invention belongs to the technical field of EBSD sample preparation of heterogeneous materials, and particularly relates to an EBSD sample preparation method of an Al7075 / Al6061 bimetal composite cast ingot. According to the method, mechanical grinding and polishing and argon ion polishing are combined for EBSD sample preparation, during mechanical grinding and polishing, aluminum oxide polishing paste is selected for rough polishing, aluminum oxide or chromium oxide polishing paste is selected for fine polishing, and finally cerium oxide polishing paste is selected for fine polishing, so that crystal lattices with complete and distortionless sample surface layers are obtained as far as possible, and the defects such as trailing are reduced to the maximum extent; the optimal surface characteristics are provided for subsequent argon ion polishing, and meanwhile, the calibration rate of an Al7075 / Al6061 bimetal composite cast ingot EBSD sample prepared through the method is not lower than 90% in combination with the optimal argon ion polishing process parameters.

The invention discloses a copper-stainless steel bimetal thin-wall part and a preparation method thereof, and belongs to the technical field of metal material processing. The preparation method comprises the following steps that a copper material and a steel material are prepared into a composite blank; performing first destressing heat treatment on the composite blank to obtain a bimetal cylindrical blank; the bimetal cylindrical blank is subjected to repeated spinning, and a bimetal spinning prefabricated part is manufactured; and after second destressing heat treatment is conducted on the bimetal spinning prefabricated part, machining is conducted till the dimensional tolerance of the copper-stainless steel bimetal thin-wall part is achieved. By means of the method, the metal advantages of the copper material and the steel material can be combined, low-cost manufacturing of the high-performance composite part is achieved, and therefore a traditional metal composite scheme of welding or bolt connection is replaced.

The application discloses an automatic girth welding process for a bimetal metallurgical composite pipe, which comprises the following steps: S1, bimetal metallurgical composite pipe selection, wherein a base pipe of the bimetal metallurgical composite pipe is an X60 steel pipe, and chemical components of the X60 steel pipe are as follows: C is 0.03-0.05, Si is 0.25-0.35, Mn is 1.40-1.60, P is less than or equal to 0.008, S is less than or equal to 0.005, Cr is less than or equal to 0.30, and the balance is Fe; and a cladding layer is an Incoloy 825 corrosion-resistant alloy, and chemical components of the Incoloy 825 corrosion-resistant alloy are as follows: C is less than or equal to 0.05, Si is less than or equal to 0.50, Mn is less than or equal to 1.0, P is less than or equal to 0.005, S is less than or equal to 0.003, Ni is 38.0-45.0, Cr is 20.0-23.0, Mo is 2.5-3.5, Cu is 1.8-3.0, Ti is 0.6-1.2, Al is less than or equal to 0.15, and the balance is Fe. The application solves the problem of automatic girth welding of the bimetal metallurgical composite pipe. Not only the production cost and the labor intensity of workers are greatly reduced, but also the welding efficiency and the welding quality of the bimetal metallurgical composite pipe are effectively improved. The welded joint has excellent comprehensive mechanical properties and corrosion resistance.

The invention relates to the technical field of plasma welding, in particular to plasma welding equipment for bimetal composite pipe machining, which comprises a horizontally arranged support mounting plate, two groups of displacement support material guide modules, two groups of displacement clamping and fixing modules and a rotary welding mechanism, and the rotary welding mechanism comprises a supporting mounting ring and an adjusting welding module. The plasma welding equipment is highly integrated and automatic, the whole-process integrated operation of pipe feeding, aligning, clamping and welding is achieved, the efficiency and quality are remarkably improved, the equipment has good adaptability, pipes of different lengths and diameters are stably treated through adjustable supporting and a quick-changing clamping module, and the production efficiency is improved. The multi-degree-of-freedom welding mechanism can accurately adjust the position and the angle, it is guaranteed that girth welding is accurate and uniform, the overall structure is stable, operation is convenient and fast, and high-quality welding of the bimetal composite pipe is effectively guaranteed.

The invention discloses a rolling and expanding bidirectional laminating method for a layered bimetal composite hollow shaft, which is characterized in that an outer shaft and an inner shaft which are made of metal materials are in interference fit to obtain an initial composite hollow shaft; then the initial composite hollow shaft is fed into a three-roller skew rolling mill, when a roller performs skew rolling on the initial composite hollow shaft, the reaming rod extends into an inner hole of the initial composite hollow shaft at the same time, and the outer diameter of the reaming rod is larger than the diameter of the inner hole of the initial composite hollow shaft; the initial composite hollow shaft is subjected to bidirectional compression in the radial direction by the roller and the reaming rod during rolling; the initial composite hollow shaft is pushed forwards in the axial direction, meanwhile, the axial relative position of the roller and the reaming rod is kept unchanged till lamination rolling of the whole composite hollow shaft is completed, and the layered bimetal composite hollow shaft is obtained; the device has the advantages that during rolling, the roller and the reaming rod simultaneously compress the composite hollow shaft inside and outside in the radial direction, and the bonding strength of the composite hollow shaft is remarkably improved.

The invention relates to the field of gas sensing, and discloses a two-dimensional bimetallic Co-MOF / Zn-TCPP composite material, a preparation method and application thereof, a gas sensitive sensor, and a preparation method and application thereof. The two-dimensional bimetallic Co-MOF / Zn-TCPP composite material comprises a Zn-TCPP material, and the surface of the Zn-TCPP material is modified with a Co-MOF material. According to the method, a bimetal organic framework material is combined with a porphyrin compound to form a two-dimensional composite gas-sensitive material with high specific surface area, a porous structure and a bimetal synergistic effect, so that a two-dimensional bimetal gas-sensitive sensor with excellent performance is prepared. According to the sensor, the detection sensitivity of H2 is remarkably improved, the working temperature is reduced, and the limitations of insufficient sensitivity, high working temperature and the like of a traditional single metal oxide gas sensitive sensor are overcome.

The invention discloses a bimetallic composite material preparation method and system based on metal droplet size regulation and control, and belongs to the technical field of centrifugal casting. According to the method, aiming at a bimetal system with a liquid-liquid mixing and dissolving gap, an alloy melt is smelted according to a preset proportion, and then precise control over the size of second metal phase liquid drops is achieved in a casting ladle by regulating and controlling the standing time in combination with a high-temperature and high-speed camera shooting system. Then relevant casting parameters are input into an autonomously derived liquid drop movement speed and trajectory prediction model, the liquid drop position is predicted, and finally the centrifugal rotating speed or the heating power is adjusted through feedback control according to the deviation between a prediction result and a preset trajectory, so that directional preparation of different structures of the bimetal composite material is achieved. The corresponding system comprises a monitoring module, a calculation module and an execution module which cooperatively complete parameter monitoring, calculation analysis and precise regulation and control in the material preparation process. The casting inclusion defect can be reduced, the product quality instability is reduced, and directional preparation of different structures of the bimetal composite material is achieved.

A fire protection element can be used for sealing a combustible body, which penetrates an opening in a wall or ceiling, in the event of a fire. The fire protection element has a belt- shaped carrier from the edge of which tongues protrude transversely to the longitudinal direction of said carrier. The tongues are connected to the belt-shaped carrier, at least a significant proportion of the tongues are formed of a bimetal, and the tongues can move in one direction under the effect of heat. A fire protection material is applied to at least one side of the tongues. Furthermore, a method can be used for sealing a combustible body, which penetrates an opening in a wall or ceiling, in the event of a fire.

The invention provides a metal type flux-cored wire, a bimetal composite pipe for high-pressure hydrogen storage and transportation and a preparation method of the bimetal composite pipe. In the metal type flux-cored wire, a flux core comprises the following components in percentage by mass: 26%-34% of Cr powder, 12%-20% of Fe50Ni50 powder, 4.5%-9.5% of Fe20Mn80 powder, 1.0%-2.0% of Fe30Si70 powder, 0.20%-0.30% of CeN powder, 0.40%-0.50% of NbN powder, less than or equal to 0.1% of Re2O7 powder and the balance of Fe powder; the outer skin is a 314 austenitic stainless steel strip and comprises the following alloy components in percentage by mass: 24%-26% of Cr, 19%-21% of Ni, 1%-2% of Mn, 2%-3% of Si, 0.08%-0.10% of C, less than or equal to 0.0012% of S, less than or equal to 0.010% of P and the balance of Fe. The metal type flux-cored wire can be used for preparing a bimetal composite pipe used in a high-pressure or corrosive environment.

The invention discloses a spinning-additive composite forming process method for a copper-nickel bimetal complex curved busbar component, and particularly relates to the technical field of material forming. The copper-nickel bimetallic component in a complex shape can be machined through spinning-additive composite machining, and the method is suitable for manufacturing a complex curved generatrix metal component. By optimizing the technological parameters of spinning and electric arc material increase, the structure property of the material can be effectively improved, and the forming precision can be improved. The method comprises the following steps that a copper alloy cylindrical part blank is preheated within the temperature range of 400 DEG C, and it is ensured that the material has proper plasticity; a spinning die suitable for a complex curved bus is designed, multi-pass spinning is carried out, and the needed curved bus copper alloy component is machined step by step; then nickel-based alloy is added to the surface of the component, and secondary spinning is carried out to obtain a bimetallic component with high bonding strength; the material is subjected to uniform plastic deformation by adjusting the pressure and the feeding rate of the spinning roller; and finally, post-treatment is conducted, residual stress is eliminated, and the geometric accuracy of the formed part is ensured.

According to the production method of the hot-rolled extra-thick and ultra-wide double-metal composite plate, S30403 is selected as a stainless steel layer, and the stainless steel layer comprises the following chemical components in percentage by mass: 0.02%-0.029% of C, 0.3%-0.5% of Si, 0.8%-1.0% of Mn, less than or equal to 0.04% of P, less than or equal to 0.005% of S, 18.0%-18.8% of Cr, 8.0%-8.2% of Ni and the balance of Fe and inevitable impurities; the base layer is made of Q355B low-alloy high-strength steel and comprises the following chemical components in percentage by mass: 0.06%-0.12% of C, 0.15%-0.3% of Si, 1.45%-1.6% of Mn, less than or equal to 0.02% of P, less than or equal to 0.005% of S, 0.02%-0.05% of Al, 0.008%-0.02% of Ti and the balance of Fe and inevitable impurities; the key process steps comprise assembling, heating, rolling, cooling and finishing, and industrial preparation of the high-performance bimetal composite plate with the width larger than 3.5 m, the total thickness not smaller than 100 mm, the base material larger than or equal to 90 mm and the stainless steel coating larger than or equal to 10 mm is achieved.

The application provides a double-metal composite drill rod with a special-shaped section and a manufacturing process thereof, and the double-metal composite drill rod with a special-shaped section comprises a steel-aluminum special-shaped section composite rod body, the steel-aluminum special-shaped section composite rod body comprises a steel outer tube, and an aluminum alloy inner tube is arranged in the steel outer tube; an inner-outer tube special-shaped torsion transmission section transmission structure is adopted between the aluminum alloy inner tube and the steel outer tube; or a special-shaped connecting pin torsion transmission structure is adopted between the aluminum alloy inner tube and the steel outer tube. The double-metal composite drill rod with a special-shaped section fully utilizes the high strength and wear resistance of steel and the high specific strength and corrosion resistance of light alloy, adopts a mechanical composite process, forms a light double-metal composite drill rod with a special-shaped section and a processing technology, and has the comprehensive performance of light weight, high strength, good processing performance, low cost, corrosion resistance and good wear resistance.

This utility model discloses an oil-free lubricated bearing plate, comprising a bimetallic plate composed of a base metal plate and a sintered metal plate. Graphite insertion holes are equidistantly distributed on the bimetallic plate. A first slot is equidistantly formed on the side of the base metal plate closest to the sintered metal plate, and a first locking strip is fixedly connected to the side of the sintered metal plate corresponding to the first slot. In the production of this utility model, the base metal plate is pre-processed to form the first slot and the second locking strip. Alloy powder is then spread evenly on the base metal plate, and the base metal plate and the sintered metal plate are bonded together through sintering. The pre-processed first slot and second locking strip ensure a tight bond between the base metal plate and the sintered metal plate, greatly enhancing the bonding strength and preventing cracks from appearing between them.

The invention belongs to the technical field of bimetal composite pipe blank making, and particularly relates to bimetal pipe metallurgy composite blank making equipment and a blank making method. The device at least comprises a rotatable base; the hollow cylindrical shell is vertically arranged and is fixedly assembled on the upper surface of the base; the supporting seat is fixedly arranged below the center of the hollow cylindrical shell and is rotationally connected with the base; and the forging and pressing mechanism is arranged above the supporting seat. By means of the method, metallurgical bonding of the outer-layer carbon steel base body and the inner-layer corrosion-resistant alloy layer of the bimetal composite blank can be effectively achieved, the bonding strength of the outer-layer carbon steel base body and the inner-layer corrosion-resistant alloy layer is ensured, and a good foundation is laid for follow-up pipe manufacturing procedures such as punching forming and rolling of the blank.

This invention discloses a SiC-supported LDH nanocomposite material, its preparation method, and its application as a microwave absorbing and corrosion-resistant material. The SiC-supported LDH nanocomposite material has a core-shell structure, wherein the core is silicon carbide nanowires and the shell is a layered bimetallic hydroxide doped with a third metal. nw The loading of the third metal-doped layered bimetallic hydroxide is 43.1%–168%. This invention improves the microwave absorption performance of the composite material by adjusting the LDH shell content and doping the LDH with cobalt to form a ternary LDH. Furthermore, the core-shell structure of the SiC-loaded LDH nanocomposite not only provides multiple scattering conditions for microwaves but also acts as a physical barrier, extending the corrosion path and acting as a labyrinth effect to hinder the intrusion of corrosive media. Moreover, the LDH memory effect and anion exchange effect further resist chloride ion intrusion, achieving a lightweight, integrated application of microwave absorption and corrosion protection.

The present application relates to the technical field of soldering, and specifically discloses a dissimilar material joining method for titanium and solder for sealing a vacuum container. The joining method comprises: firstly, designing and preparing a metal transition segment; secondly, designing and preparing a cladding material; thirdly, selecting a cladding heat source and a cladding method, implementing cladding, and preparing a bimetallic layer; fourthly, punching the bimetallic layer to form a hole, and preparing a bimetallic layer punching structural part; fifthly, selecting a joining heat source and a joining method, implementing joining, and preparing a dissimilar material structural assembly for vacuum sealing; sixthly, using a soldering method to prepare a whole container; and seventhly, starting a vacuum furnace, and implementing vacuum sealing to prepare a vacuum container. The dissimilar material joining method provided by the present application has a simple joining process, high efficiency, a low cost, small stress and deformation, and can prevent a brittle structure from being formed; a formed combined connecting joint has good internal quality, high bonding strength, and good impact resistance, heat preservation efficiency and sealing performance; and the service life of the container is long.

The invention discloses a thin metal strip preparation method and a thermal bimetal composite strip, and the method comprises the following steps: adopting a vacuum induction melting process to smelt all raw materials in a preset proportion to obtain alloy liquid with preset components, and pouring in a protective atmosphere to obtain an alloy ingot; the alloy cast ingot is sequentially subjected to forging, hot rolling, acid pickling and surface coping treatment, and an intermediate steel coil is obtained; the middle steel coil is subjected to multi-pass cold rolling, a strip is obtained, multi-pass cold rolling is executed through a preset deformation sequence, and at least one time of middle solution annealing treatment is conducted in the multi-pass cold rolling process; and the strip is subjected to final cold rolling and finished product solution annealing treatment, and the metal thin strip for the passive layer of the thermal bimetal composite strip is obtained. The alloy components and the purity are accurately controlled by adopting vacuum induction melting, and the corrosion resistance and the stability of thermal expansion and resistivity of the passive layer thin strip are improved by combining the multi-pass cold rolling with the preset deformation sequence and the intermediate solution annealing process.

This invention belongs to the technical field of clamping devices, and particularly relates to a clamping fixture for welding bimetallic saw blades. It includes a central frame, clamping components, guide components, and adjusting components. The clamping components are mounted on the top of the central frame via the adjusting components, and guide components are mounted on the left and right ends of the central frame. Two clamping components are provided, each including a bottom component. Two symmetrical clamping plates are opened and closed by a telescopic cylinder. Rollers are mounted in the middle of the clamping plates via an elastic pressure frame, providing two clamping states. When a metal strip needs to be fixed, the clamping plates contact the surface of the metal strip for compression and fixation. When rolling clamping is required, the rollers, in conjunction with the elastic pressure frame, clamp the metal strip by rolling. Sufficiently elastic springs prevent slippage between the metal strip and the rollers. In this case, the metal strip can be pushed and moved by the rollers for movable clamping, achieving mobile clamping for convenient continuous welding.