19results about How to "Avoid microcracks" patented technology

This invention discloses a method for preparing high-purity oxygen-free copper, relating to the field of metallurgical technology. The method includes multi-stage electrolytic refining, gradient-heating vacuum melting, inert gas-protected refining, electron beam melting, hydrogen plasma arc melting, directional solidification, and post-treatment steps. The multi-stage electrolytic refining utilizes a specific component electrolyte and periodically commutated current; vacuum melting is combined with bidirectional electromagnetic stirring; inert gas-protected refining is combined with a gradient reduction composite covering agent; electron beam and hydrogen plasma arc melting achieve deep purification and deoxidation; and directional solidification and two-stage annealing ensure product performance. The high-purity oxygen-free copper prepared by this invention has a conductivity of 102.3% IACS, a copper content ≥99.9999%, and an oxygen content <1.0 ppm. It exhibits high purity, low oxygen content, and excellent conductivity. The process is stable and controllable, making it suitable for high-end electronics applications.

This invention discloses a refractory high-entropy alloy resistant to high-temperature molten aluminum corrosion and erosion-wear, its preparation method, and its applications. The refractory high-entropy alloy of this invention comprises, by atomic percentage: 40-50 at.% Nb, 35-40 at.% Ti, 4-10 at.% Mo, 4.5-5 at.% Cr, and no more than 10 at.% Al. This invention obtains the refractory high-entropy alloy by mixing and melting the raw materials under a protective atmosphere. The refractory high-entropy alloy ingot of this invention has a single-phase BCC microstructure, exhibiting stable structure, good mechanical properties, and excellent resistance to molten aluminum corrosion and erosion-wear. The Nb-Ti-Mo-Cr based refractory high-entropy alloy resistant to molten aluminum corrosion and erosion-wear prepared using this invention can significantly improve the service life of components, reduce replacement frequency, and has high economic benefits.

The invention relates to an energy storage device and a power utilization system. The energy storage device comprises a shell, an electrode assembly, an end cover assembly and a binding piece, wherein the shell is provided with an accommodating cavity; the electrode assembly is arranged in the accommodating cavity, the electrode assembly comprises a plurality of tabs and an electrode main body which are electrically connected, and the tabs and the electrode main body are arranged along a first direction; the end cover assembly is arranged on one side of the shell and used for sealing the containing cavity. The binding piece is positioned between the end cover assembly and the electrode main body; the binding piece is provided with a penetrating hole, and the penetrating hole penetrates through the two opposite surfaces of the binding piece in the first direction. The penetrating hole extends along a second direction, the plurality of tabs penetrate through the penetrating hole, and the first direction is intersected with the second direction; the penetrating hole is provided with a first side wall and a second side wall which are oppositely arranged in the second direction, and in the second direction, the distance between the first side wall and the second side wall is larger than the size of the ends, close to the electrode body, of the tabs.

The invention discloses a method for mechanically shaping superfine powder, and relates to the preparation field of particle size control and morphology control of glass superfine powder, and the method comprises the following steps: 1, conveying a primarily crushed powder raw material into a multi-stage turbo-type shaping cavity which is composed of a fixed wall and a high-speed rotor, and the high-speed rotor is provided with a shaping medium; 2, synchronously applying an impact, shearing and rolling composite force field; 3, treating for 5-30 minutes in a low-temperature environment from-50 DEG C to normal temperature; 4, monitoring the sphericity degree and the particle size distribution of the powder in real time through an online particle image analyzer; 5, collecting the sphericity gt through a cyclone separator; and 0.95 of the superfine powder finished product is obtained. The sphericity gt of the powder is produced; 0.95, the surface roughness is Rat; the sphericity degree of the traditional ball milling process is generally 1t; and 0.75, microcracks generated by impact crushing are avoided through the synergistic effect of shearing and rolling.

This invention discloses a corrosion-resistant free-machining brass alloy, its preparation method, and its applications. The corrosion-resistant free-machining brass alloy is composed of the following components by mass percentage: Cu: 58.0~62.5%, Si: 0.3~1.2%, Ni: 0.1~0.5%, Mn: 0.3~0.7%, B: 0.005~0.025%, with the balance being Zn and unavoidable impurity elements, wherein the total content of unavoidable impurity elements is <0.3%. The brass alloy of this invention possesses excellent machinability, corrosion resistance, and mechanical properties, and is lead-free, meeting environmental protection requirements and satisfying the needs of various fields for brass alloy materials.

The present application relates to the technical field of aerated concrete preparation, and particularly relates to a method for preparing electrically conductive aerated concrete by using porous carbonized recycled aggregate and the aerated concrete. The process method first places pre-wetted recycled aggregate in a pressurized carbonization kettle, and industrial waste gas with CO2 concentration greater than or equal to 20% is introduced to react for 2-3 hours at 0.5-0.7 MPa and 60-70 DEG C to produce porous carbonized recycled aggregate. Then the porous carbonized recycled aggregate is dry-mixed with gel material, gypsum, conductive carbon black and reinforcing fibers, and then mixing water containing water reducing agent (water aggregate ratio 55-60%) is added to stir into base mortar. Then aluminum paste suspension is added to the mortar, and after stirring to start aeration, the mortar is poured into a mold. After 2-3 hours of static aeration, the mold is finally autoclaved and dried for 6-8 hours to obtain the electrically conductive aerated concrete. Through aggregate pretreatment strengthening, orderly dispersion of the conductive phase and hierarchical curing control, the present application can effectively solve the contradiction between light weight, high strength, electrical conductivity and durability, and provide a multifunctional green building material solution for airport construction.

The present application relates to a kind of preparation method of full solid battery double-layer ultrathin electrolyte film based on transfer printing technology.The present application utilizes the high voltage stability of halide layer and the high ionic conductivity of sulfide layer to synergistically improve the cycle life and high rate performance of battery and other performances through halide / sulfide double-layer electrolyte design.Further, the transfer printing process of multi-layer electrolyte film is designed specifically, and the gradient drying process can avoid substrate deformation, effectively prevent halide / sulfide interlayer cracking, and enhance the interlayer adhesion, achieving electrode thinning, high mechanical strength and interface stability.The present application solves the technical bottleneck of the application difficulty of double-layer electrolyte structure in full solid battery through material system optimization and transfer printing process innovation, and is suitable for the industrial production of high energy density solid state battery.

The application discloses a method and device for automatically scraping off the insulating layer of an enameled wire, and belongs to the field of mechanical processing. The method comprises the following steps: the enameled wire is passed through a guide sleeve and tightly pressed on an adjustable positioning block, so that the enameled wire is axially fixed; a driving power source is driven to continuously rotate a cam 5; through the rotation of the cam 5, a compound motion cycle is synchronously controlled to be executed by a scraper mechanism; the compound motion cycle is repeatedly executed, and is matched with the periodic rotation of the enameled wire until the insulating layer is completely scraped off. The application can efficiently and completely remove the insulating layer under the premise of guaranteeing zero damage to the wire base, and simultaneously meets the requirements of high reliability and simple operation.

This utility model provides an anti-breakdown corona silicone roller, comprising: a roller body, a support tube for quick installation of a silicone sleeve fixed to the outer side of the roller body by a fixing ring, a fixing ring respectively provided at the left and right ends of the roller body, a silicone sleeve fixed to the outer wall of the support tube, the support tube including two arc plates for fixing and supporting the silicone sleeve, and a connecting plate fixed to the upper and lower sides between the two arc plates respectively. Compared with the prior art, this utility model has the following beneficial effects: by setting a ceramic layer with a thickness of 0.2-0.5mm on the outer wall of the silicone sleeve, it helps to improve the service life of the silicone sleeve; by adding a support tube and fixing rings between the roller body and the silicone sleeve, the installation and removal of the silicone sleeve becomes simple, eliminating the need to spend a lot of time and multiple people to complete the installation and removal of the silicone sleeve, thus improving the convenience of installation and removal of the silicone sleeve.

The utility model belongs to mechanical or structure part static balance test technical field, concretely relates to airtightness detection mechanism for membrane electrode and airtight integrated machine using it, include: hydraulic drive position, detection position, pull rod guide pillar, pressure head traction plate, main hydraulic cylinder, upper pressure head, lower pressure plate seat, lower pressure plate, track assembly, pressure head traction plate swing joint in pull rod guide pillar, upper pressure head is connected in the downside of pressure head traction plate. The utility model through setting in pressure head traction plate, will main hydraulic cylinder and upper pressure head change into indirect connection, will lower pressure plate and multiple lower pressure plate seat contact fit, and track assembly sets up between two lower pressure plate seats, can maximize increase lower pressure plate and lower pressure plate seat contact area, reduce the pressure intensity of lower pressure plate bottom, make it can adapt 5Mpa's high pressure airtightness test, through the way of upper pressure head and lower pressure plate cover pressure to membrane electrode fixed, through blowing gas and detecting air flow fluctuation to judge whether there is gas leakage and then acquire airtightness.

This invention provides a fiber optic anti-loss coupling device and a method for multi-hole deployment in coal mines, belonging to the field of coal mine safety monitoring technology. Based on a PVC pipe with grooved outer wall and external and internal threads at both ends, and a grooved anti-bending guide assembly, this invention provides a fiber optic deployment device and method for drilling holes. It is suitable for the efficient and reliable deployment of distributed acoustic sensing (DAS) microseismic monitoring optical cables in coal mines, especially addressing the needs for improved bending resistance, tensile strength, and coupling quality of bottom-hole optical fibers under cement slurry sealing conditions. By improving the PVC pipe structure, guide structure, and sealing / sealing process, low-loss and high-coupling-efficiency fiber optic deployment in mines is achieved.

This invention discloses an ultrasonic vibration electrolytic grinding composite spindle component in the field of grinding composite spindle technology, comprising an insulating shell; a hollow spindle rotor; an ultrasonic vibration mechanism connected to the hollow spindle rotor and used to generate and transmit axial ultrasonic vibration; a rotary drive device for driving the hollow spindle rotor and the ultrasonic vibration mechanism to rotate together; and an electrolysis mechanism including a conductive slip ring and an electrolyte delivery assembly, the electrolyte delivery assembly being used to deliver electrolyte to the grinding area at the front end of the hollow spindle rotor; wherein, the first electrical channel of the conductive slip ring is electrically connected to the ultrasonic vibration mechanism for transmitting high-frequency electrical signals; the second electrical channel of the conductive slip ring is electrically connected to the tool mounting end of the hollow spindle rotor for transmitting direct current for electrolytic machining. This composite spindle component, by integrating ultrasonic vibration, electrolytic machining, and high-speed grinding processes, overcomes the fundamental technical bottlenecks of low material removal rate, severe thermal damage, and rapid tool wear in traditional single ultrasonic grinding.

The present application relates to the technical field of photovoltaic modules, and particularly relates to a back contact cell, a back contact photovoltaic module and a preparation method thereof. The back contact cell comprises a cell substrate, a bus electrode and a current collecting electrode. The bus electrode is provided with a bifurcated structure. The bifurcated structure comprises at least one connecting part extending to the side of the bus electrode. The connecting part is used for electrical connection with the current collecting electrode of the same polarity. A welding blank area is formed between each connecting part of the bifurcated structure and / or between the connecting part and the main body of the bus electrode. The spacing between the connecting part and the current collecting electrode of the opposite polarity located on the side of the bus electrode ranges from 0.4 mm to 0.8 mm. The back contact photovoltaic module comprises the above-mentioned back contact cell. The preparation method of the back contact photovoltaic module is used for preparing the above-mentioned back contact photovoltaic module. The present application provides a back contact cell, a back contact photovoltaic module and a preparation method of the back contact photovoltaic module, so that the end of the solder strip cannot be welded and fixed with the electrode, and cannot also be short-circuited with the electrode of the opposite polarity.

The utility model relates to injection mold technical field discloses a motorcycle side plate production injection mold, including a motorcycle side plate production injection mold, including upper die and lower die, the upper die bottom fixedly connected with core, the core inside is provided with the ejection assembly, the ejection assembly includes a plurality of top plates, the top plate top all are fixedly connected with buffer disc spring, buffer disc spring top all are fixedly connected with the connecting plate, the connecting plate top all are provided with power component, power component output all are fixedly connected with the push rod, the push rod outer wall all are equipped with the extension spring. In the utility model, the connecting plate and buffer disc spring are moved with the push rod of hydraulic ware and top plate, and make the extension spring force stretch, and the top plate will be shaped side plate and lift to take and hold for the staff, reach the effect that the carbon fiber surface damage caused by top plate is avoided, solve the problem that traditional stripping ejector pin stress concentration leads to product damage, improve the product surface quality.

The utility model relates to quartz stone plate cutting technical field, specifically is a kind of quartz stone plate cutting positioning device, including conveying roller, two groups conveying roller are fixed with mounting bracket, the mounting bracket is fixed with positioning mechanism, the positioning mechanism includes second hydraulic rod and connecting block, the top of mounting bracket is equipped with second hydraulic rod, the telescopic end of second hydraulic rod is fixed with connecting block, connecting block is connected with slide by connecting rod, the slide is slidably connected between slide and mounting bracket, and the end of slide is fixed with limit block, the limit block is fixed with clamping plate, the clamping plate is fixed with a plurality of flexible gaskets;Second hydraulic rod drives connecting block to move upwards, make connecting rod push slide to slide in mounting bracket, and then make flexible gasket on clamping plate to resist the both sides of plate, to prevent clamping plate from directly contacting quartz stone surface to cause its local excessive pressure to easily produce indentation or microcrack condition while limiting plate.

This invention relates to a method for regenerating sputtered titanium targets, titanium targets, and titanium target assemblies, specifically relating to the field of target materials. The regeneration method includes: sequentially roughening, cleaning, and cold spraying the sputtered surface of the sputtered titanium target to obtain a regenerated intermediate target; and then heat-insulating and cooling the regenerated intermediate target to obtain a regenerated titanium target. The regeneration method provided by this invention, by employing a specific treatment process on the sputtered titanium target and utilizing a combination of cold spraying and heat insulation, achieves efficient regeneration of titanium targets, maximizing the value of high-purity titanium resources and reducing material costs.

The invention relates to the technical field of semiconductor product processing, and discloses a silicon wafer grinding machine for semiconductor manufacturing, which comprises a lower fixing piece and an upper fixing piece, a drum; a driving assembly; and a plurality of groups of grinding assemblies are mounted in the rotary drum, the grinding assemblies are located on the outer side of the silicon wafer, and the drum body drives the grinding assemblies to be close to the edge of the silicon wafer. By arranging the rotary drum, the driving assembly and the multiple sets of grinding assemblies, under the action of the rotary centrifugal force of the rotary drum, gravity balls move outwards in the radial direction to drive the drum body to move downwards, and therefore the multiple grinding tiles are synchronously driven to be fed inwards in the radial direction at equal intervals, and uniform grinding of the edge of a silicon wafer is achieved; when ovality or local protrusions exist in the silicon wafer, only the protruding part makes contact with the grinding tile and is removed preferentially, so that the edge roundness of the silicon wafer is synchronously corrected in the grinding process, and the geometric accuracy of the silicon wafer and the alignment reliability of the follow-up process are effectively improved.

The application relates to the technical field of gas filtration, in particular to a honeycomb filter which comprises a box body, a wind guide pipe and a filter body in communication with the wind guide pipe, a cladding shell is arranged on the filter body, a plurality of heat exchange cavities are arranged between the cladding shell and the filter body, sealing plates are rotationally arranged at air inlet positions of the plurality of heat exchange cavities, a temperature control protection unit connected with the sealing plates and the heat exchange cavities is arranged in the box body. When the honeycomb filter is used, the plurality of heat exchange cavities between the cladding shell and the filter body are arranged, and a pure mechanical temperature control protection unit driven by a temperature sensing bag is matched, the number of heat exchange cavities participating in heat exchange can be automatically adjusted according to the change of tail gas temperature, accurate dynamic regulation and control of the working temperature of the filter body is realized, thereby effectively avoiding the thermal expansion and thermal stress accumulation of the filtering medium caused by continuous heat action, and micro cracks or sintering deformation of the honeycomb ceramic body is prevented.