20 results about "Roll bonding" patented technology

The invention relates to an ultrasonic rolling parameter calculation method based on nano-grain structure prediction. The method comprises the following steps: (1) determining a target grain size; and (2) negative feedback adjustment of the ultrasonic rolling parameters: obtaining the current ultrasonic rolling parameters, predicting the theoretical minimum value of the surface grain size of the metal surface deformation layer under the current ultrasonic rolling parameters, negative feedback adjustment of the current ultrasonic rolling parameters according to the surface grain size, and outputting target ultrasonic rolling parameters. According to the method, the nanocrystalline structure of the metal surface deformation layer serves as a machining target, the corresponding ultrasonic rolling parameters are developed by establishing a quantitative calculation method between the target grain size and the ultrasonic rolling parameters and combining the determined relation between the metal mechanical performance and the nanocrystalline structure according to the specific metal mechanical performance requirement, and the blindness of an experiment is avoided.

The application relates to a preparation method of a layered B4C reinforced aluminum-based neutron absorption material plate, which comprises the following steps: using pre-oxidized aluminum powder and B4C powder to obtain a (B4C+Al2O3) / Al composite material plate through powder metallurgy, extrusion, rolling and other processes; placing mixed powder of B4C and 6061 Al between two (B4C+Al2O3) / Al composite material plates of the same size to obtain a layered blank sample of a (B4C+Al2O3) / Al plate with a B4C / 6061 Al mixed particle interlayer; riveting the layered blank sample, adopting a cumulative roll bonding method to roll the layered blank sample for multiple times to obtain a blank, and annealing the blank sample and cooling in air to obtain a layered B4C particle reinforced aluminum-based neutron absorption material plate. The preparation method of the layered B4C / Al-based neutron absorption material plate provided by the application has excellent mechanical properties and neutron absorption capacity, and can be used for dry storage and transportation of spent fuel.

The invention discloses an ultrasonic rolling-supersonic flame spraying composite modification method for titanium alloy and a composite structure, and belongs to the technical field of metal surface modification.The method comprises the following steps that firstly, the to-be-strengthened surface of a titanium alloy matrix is ground, and machining marks are ground away; 2, the titanium alloy matrix is cleaned, and residues attached to the ground surface are removed; step 3, rolling the to-be-strengthened surface of the titanium alloy matrix; 4, the titanium alloy matrix is cleaned, and dirt on the surface of the titanium alloy matrix is washed away; 5, a WC-10Co-4Cr coating is sprayed on the surface, obtained after ultrasonic rolling, of the titanium alloy base body through the high velocity oxy-fuel spraying technology; and 6, the surface of the coating is ground and polished. The wear resistance, hardness and other comprehensive performance of the titanium alloy are improved, and the problems that the wear resistance of the titanium alloy is poor, and the surface is prone to being abraded are solved.

This invention discloses a roll-to-roll bonding reinforcement machine, including a machine tool frame and a machine tool protective cover disposed on the surface of the machine tool frame. A marble platform is horizontally disposed on the left side of the surface of the machine tool frame, and an adsorption platform is horizontally disposed on the surface of the marble platform. A support frame is vertically disposed on the side of the marble platform, and a feeding roller is rotatably disposed on the side of the support frame. A stripping platform is horizontally disposed on the right side of the top of the support frame. Marble columns are vertically disposed on the left and right sides of the surface of the marble platform, and a Y-axis linear module is horizontally disposed on the top of the marble column. An X-axis linear module is horizontally disposed on the top of the Y-axis linear module. A first moving stage is vertically disposed on the side of the X-axis linear module, and a connecting plate is vertically disposed on the front side of the first moving stage. A moving frame is vertically disposed on the front side of the connecting plate, and a bearing seat is disposed at the bottom of the moving frame, and a suction nozzle is disposed at the bottom of the bearing seat.

The present application belongs to the technical field of metal layered composite material preparation, and relates to a titanium-steel composite plate and a manufacturing method thereof. The manufacturing method comprises the following steps: removing the surface oxide layer of a steel coil through shot blasting treatment, and making the surface of the treated steel coil have a specified surface roughness; coating an intermediate plating layer on the surface of the steel coil; making the rolling bonding surface of a titanium coil and the steel coil have a specified surface roughness through shot blasting treatment; preheating the steel coil and the titanium coil; performing first composite rolling on the preheated steel coil and titanium coil; heating the composite coil after the first composite rolling to a specified temperature and keeping the temperature; performing second composite rolling on the composite coil after heating and keeping the temperature; performing martensite quenching or bainite quenching by controlling the cooling speed and temperature of the composite coil after the second composite rolling; performing flattening and / or straightening treatment on the composite coil; performing tempering treatment on the flattened and / or straightened composite coil; and coiling or slitting the composite coil after the tempering treatment.

This utility model belongs to the field of ultrasonic welding technology, specifically relating to an ultrasonic rolling welding fixture for clamping and positioning a battery cell assembly so that the battery cell tabs are located between the upper and lower welding heads of the welding machine. The fixture includes a base plate, a support mechanism, a lateral movement mechanism, a lifting mechanism, and a positioning mechanism. The lateral movement mechanism is used to adjust the horizontal position of the battery cell assembly, the lifting mechanism is used to adjust the height of the battery cell assembly, and the positioning mechanism is provided on the lifting mechanism to position the battery cell assembly so that the upper and lower welding heads can perform rolling welding on the battery cell tabs. This utility model controls the movement of the battery cell assembly through the lateral movement mechanism, ensuring that the battery cell tabs move synchronously with the upper and lower welding heads during the rolling welding process. This ensures that the weld marks on the tabs remain uniform and avoids incomplete or over-welded welds.

The application discloses a method for splicing and rolling of thin sheets of difficult-to-deform metal, wherein a sheet blank with a thickness of 2 mm or above is subjected to 5-13 passes of initial rough rolling on a four-roller or six-roller rough rolling mill by adopting a block method process, and after the thickness is reduced to less than 0.5 mm, the sheet material is not cut at the edge portion, the head and tail are each cut by 50-100 mm, and then the head and tail of a plurality of sheets are spliced and welded, the spliced and welded strip is subjected to one pass of fine rough rolling on a six-roller or twelve-roller or fourteen-roller or twenty-roller finishing mill by adopting a strip method process. The method can realize the processes of one pass of fine rough rolling, on-line edge cutting (welding seam cutting), and multi-pass fine rolling of the spliced and welded strip coil on the finishing mill under a constant roll gap; the double-side scrap edges and the welding seams do not participate in deformation, there are no welding points and welding seams in the overlapping section, and the length of the overlapping section after the rolling and composite connection can be directly used as part of the finished product without the need for post-cutting, thereby simplifying the processing flow, reducing raw material waste, and improving the yield.

The application provides a normalization method of ultrasonic rolling parameters, comprising the following steps: determining a processing area of a sample; designing a plurality of ultrasonic rolling strengthening experiments by using four processing parameters at different levels in a working range of the processing parameters; establishing a model of processing time of the processing area with a unit size; establishing a model of total energy obtained by the processing area with a unit size in the ultrasonic rolling process; determining the total energy G corresponding to each ultrasonic rolling strengthening experiment as a G factor; obtaining the hardness, roughness and residual stress values of the sample processed by each ultrasonic rolling strengthening equipment under different G factors; and drawing the roughness-G factor, hardness-G factor and residual stress-G factor interaction diagram of the material of the processed sample. The application can well normalize the processing parameters of different ultrasonic rolling equipment, and effectively compare the horizontal processing effects.

The present application relates to the technical field of composite materials, and particularly relates to a degradable zinc-based composite material for biomedical stents and a preparation method thereof, which comprises the following steps: taking zinc sheets after surface cleaning, coating hydroxyapatite on the surface of the zinc sheets after surface cleaning, stacking the zinc sheets coated with hydroxyapatite and the zinc sheets without hydroxyapatite coating, and rolling the zinc sheets with hydroxyapatite inside the stack; folding the zinc sheets after each rolling pass, and then continuing to roll; repeating the folding-rolling until the desired rolling pass; and after the obtained sample is pressed into a block, performing multi-pass hot rolling, thereby obtaining the degradable zinc-based composite material for biomedical stents. The present application adopts a cumulative roll bonding preparation process, which can effectively improve the combination of hydroxyapatite and zinc, and improve the dispersity of hydroxyapatite in zinc, and can effectively refine the grains and strengthen the matrix, so as to finally obtain a zinc / hydroxyapatite composite material with uniform structure and excellent performance.

The invention discloses an electric pulse assisted ultrasonic rolling device, and belongs to the technical field of metal material surface machining. The electric pulse auxiliary ultrasonic rolling device comprises a machine tool body, a machine tool body, a triangular chuck arranged at the front end and a machine tool tailstock arranged at the rear end, and a workpiece is clamped between the triangular chuck and the machine tool tailstock; the ultrasonic vibration assembly comprises a supporting frame, an amplitude-change pole, an ultrasonic generator and a rolling tool head, the ultrasonic generator is electrically connected with the amplitude-change pole, the rolling tool head is connected with the end of the amplitude-change pole, and the end of the rolling tool head is attached to the outer surface of the workpiece; the electric pulse loading assembly comprises a high-frequency pulse power supply, composite carbon brushes and a carbon brush holder, the carbon brush holder is installed on the supporting frame, the workpiece penetrates through the carbon brush holder, the composite carbon brushes comprise the positive electrode carbon brush and the negative electrode carbon brush, and the high-frequency pulse power supply is electrically connected with the composite carbon brushes.

The application provides an RTP composite pipe connecting sleeve processing equipment and a processing method. The RTP composite pipe connecting sleeve is formed by roll bonding a reinforcing strip on a PE pipe base. The processing equipment comprises a PE pipe base feeding assembly for conveying the PE pipe base to a roll bonding operation position; a reinforcing strip feeding assembly for flattening and conveying a reinforcing strip in a roll to the roll bonding operation position; a reinforcing strip preheating system for preheating the reinforcing strip before it reaches the roll bonding operation position; and a roll bonding system for continuously roll bonding the reinforcing strip and the PE pipe base at the roll bonding operation position to form the RTP composite pipe connecting sleeve. The RTP composite pipe connecting sleeve processing equipment and the processing method can be used for producing a connecting sleeve suitable for connecting a large-diameter RTP composite pipe, and innovates the connecting method of the large-diameter RTP composite pipe.

The utility model discloses a vacuum ply rolling metal composite plate sealing and air extracting device which is characterized by comprising a vacuum ply rolling box wall and a sealing and closing plate installed on the vacuum ply rolling box wall, and a vacuum air extracting end is fixedly installed on the sealing and closing plate. According to the utility model, the sealing installation assembly is correspondingly arranged at the joint of the vacuum ply rolling box wall and the sealing closing plate, secondary sealing can be realized by matching with the sealing closing plate, the disassembly and the assembly are convenient, the vacuum pumping assembly can carry out vacuum pumping operation, the sealing installation pipe and the vacuum pumping end can be sealed and fixed by the sealing fixing assembly, and the installation tightness of the connecting end is good; the two ends of the sealing fixing assembly are in auxiliary sealing connection through the two auxiliary sealing sleeves correspondingly, the air tightness of installation is further improved, the air tightness is kept, meanwhile, disassembly and assembly are easy and convenient, the airtight equipment of the device is easy and convenient to disassemble and assemble, the double airtight sealing capacity is achieved, the air tightness is excellent, and leakage is not prone to occurring.

The invention discloses a copper-aluminum composite material for a battery pack conducting bar as well as a preparation method and application of the copper-aluminum composite material. The material comprises an aluminum core layer and copper layers covering the two sides of the aluminum core layer, a metallurgical bonding interface is formed between the copper layers and the aluminum layer through rolling compounding, a PA6 insulating layer is wrapped outside the metallurgical bonding interface, the insulating layer is formed through an extrusion molding process, and the R angle at the bending position of the insulating layer is the specific proportion of the thickness of the material. The invention further provides a whole set of preparation process including surface treatment, rolling compounding, electroplating, extrusion coating, laser peeling and laser welding. The composite material has the advantages of light weight, high conductivity and high strength, the insulation layer is firmly combined, the composite material is not cracked when bent, the reliability of a welding joint is high, the composite material is particularly suitable for a high-low voltage conducting bar in a new energy automobile battery pack, and the problems that a traditional pure copper bar is large in weight and high in cost, and an existing copper-aluminum composite material is poor in insulativity and machinability are effectively solved.

This invention discloses a method for obtaining high-strength, high-conductivity copper alloys through gradient twinning, belonging to the field of high-strength, high-conductivity electronic device fabrication technology. The fabrication method includes: obtaining plates with various texture orientations through directional solidification technology, stacking them sequentially from hard orientation to soft orientation to prepare multilayer plates with different texture orientations, and then performing cumulative roll bonding on the multilayer plates. Through this method, the gradient twinned copper alloy prepared by this invention can effectively improve the conductivity of the alloy while increasing its strength. This design and fabrication method for high-strength, high-conductivity copper alloys has significant guiding significance for adapting to the development of industries such as electronics and information, future transportation, and aerospace, and has very good industrial application prospects.

The invention relates to the technical field of lithium metal batteries, and discloses an integrated lithium-copper composite electrode and a preparation method thereof, and the integrated lithium-copper composite electrode comprises a sandwich structure composed of a composite copper foil current collector and a lithium metal layer. The composite copper foil current collector is composed of upper and lower copper foils and a polymer base film, the tab region realizes conductive continuity through a roll welding process, and the lithium metal layer and the copper foils form a mechanical interlocking interface through a rolling process. By optimizing the structural design and process parameters, the problems of conduction continuity, welding strength and interface bonding stability are solved, light weight and high energy density are achieved, and the self-fusing safety protection function is achieved under the thermal runaway condition. The battery performance can be remarkably improved, and the method is suitable for various lithium battery systems and has important application value.

The invention relates to the technical field of target material preparation, in particular to a method for preparing a high-performance tantalum sputtering target material through roll bonding, which comprises the following steps: step 1, vacuum melting: taking out a tantalum ingot; step 2, forward rolling; step 3, skew rolling; step 4, carrying out ply rolling; 5, heat treatment is conducted, specifically, the rolled tantalum target blank is subjected to heat treatment; and 6, machining is conducted, specifically, the tantalum target blank subjected to heat treatment is machined, the tantalum target blank obtained after machining is obtained, the surface, making contact with the tantalum target blank when the tantalum target blank is stacked serves as a welding face, and a finished product is obtained after the tantalum target blank and a back plate are welded. In the skew rolling process, orientation of the tantalum plate blank can be effectively guided, uniform texture components can be obtained, the grain size in the target material is small (the average grain size is smaller than or equal to 70 micrometers), and the utilization rate is higher.

This invention discloses a method for detecting the bonding layer of rolls, comprising the following steps: determining the state of the roll bonding layer based on independent point defects and planar defects within the bonding layer; the state of the roll bonding layer includes a safety level, a tracking level, and a warning level. Rolls in the safety level are used normally; rolls in the tracking level are continuously monitored for defect development within the tracking period; rolls in the warning level are suspended from use. A roll bonding layer detection method based on secondary and multiple reflected waves is established for independent point defects, and a roll bonding layer detection method with bottom wave attenuation is designed for planar defects, improving the detection accuracy of the roll bonding layer; classifying the state of the roll bonding layer and adopting different measures for different states can effectively avoid roll accidents, rolling line downtime, or equipment damage caused by bonding layer defects.

The present application relates to the technical field of metal composite plate preparation, and particularly relates to a self-riveting microstructure promoted metal composite plate rolling bonding method. The method is to preheat the stacked soft and hard metal plates, then roll and composite, and in the rolling process, the soft and hard metal plates are combined by self-riveting microstructure to realize mechanical riveting connection of the bonding surface, and form a composite plate; the composite plate is further promoted by heat treatment to realize metallurgical bonding of the bonding interface, and finally obtain a double connection interface of mechanical riveting and metallurgical bonding; the self-riveting microstructure includes a plurality of micro grooves arranged on the surface of the hard metal plate and a plurality of micro protrusions arranged on the surface of the soft metal plate, each column of micro protrusions is respectively inserted into each micro groove, and the micro groove is a necked structure, and in the rolling process, the micro protrusion is plastically deformed to fill and engage into the micro groove. The present application realizes the high-strength mechanical riveting and metallurgical bonding double-strengthened interface of the soft and hard metal composite plate, and significantly improves the comprehensive performance and reliability of the composite plate.

The invention relates to a heat exchanger, in particular in the form of a battery cooling device for an electrically driven battery module on an electric vehicle, the heat exchanger having a cooling circuit for circulating a temperature control fluid, the cooling circuit being formed between two plates which are connected to each other in regions by means of roll-bonding, the plates are integrally connected in a joining region and are widened in unconnected hollow regions to form a cooling circuit, in which flow elements, which are surrounded by flow on all sides and influence the flow of the temperature control fluid through the cooling circuit, are formed by the joining region.

The invention discloses an end rolling connecting device and method for a double-layer guide pipe, and relates to the technical field of rolling forming. The device comprises an equipment master control device, a rolling mechanism and an equipment main body box, a main body box operation table is provided with a rotary feeding mechanism, an axial movement supporting mechanism and a catheter locking mechanism along a working shaft, and the axial movement supporting mechanism is connected with a first rotary driving mechanism. The rolling mechanism comprises inner and outer ring rolling assemblies which are coaxially matched to extrude the guide pipe inside and outside. According to the method, the inner pipe body and the end pipe sleeve inner wall groove are embedded, and the outer pipe body and the outer wall groove are embedded by preparing components, splicing and clamping, selectively installing the rolling mechanism, setting parameters and automatically executing the rolling process. The sealing performance, pressure resistance and other performance of the guide pipe are improved, the device adapts to extreme working conditions, the automation degree is high, and efficiency is excellent.