223results about How to "Dimensionally stable" patented technology

The invention discloses active brazing filler metal for sealing sapphire and kovar alloy and a preparation method of the active brazing filler metal. The active brazing filler metal comprises 25.0 wt%-27.5 wt% of Cu, 1.0 wt%-6.0 wt% of Ti, 1.0 wt%-5.0 wt% of Al, 0.1 wt%-1.0 wt% of B, 0.1 wt%-0.5 wt% of rare earth element RE, RE is one or more of La, Ce, Sc, Pr, Nd and Er, and the balance is Ag. The preparation method comprises the following steps: preparing silver-based pre-alloying powder by adopting a gas atomization method, mixing the alloy powder with additive element powder in a ball milling manner, sintering by utilizing vacuum pressure to obtain an alloy ingot blank, and carrying out rough rolling, intermediate annealing and finish rolling to obtain an active brazing filler metal strip with the thickness of 0.05-0.2 mm. The active brazing filler metal is well matched with the thermal expansion coefficient of sapphire, direct brazing of sapphire and Kovar alloy can be achieved, the brazing temperature is moderate, and a brazed joint is uniform in structure and free of defects such as air holes and cracks.

The invention relates to the technical field of production of automobile roofs, and particularly discloses a fiber-reinforced thermoplastic composite automobile interior ceiling and a preparation method thereof. A fiber-reinforced thermoplastic composite material automotive interior ceiling comprises a base material and a fabric, and the base material sequentially comprises a bottom layer non-woven fabric, a first adhesive film, a blend fiber felt and a second adhesive film from bottom to top; the blend fiber felt is made of reinforced fibers and thermoplastic fibers through a non-woven process. The preparation method comprises the following steps of: preparing the base material by a dry method, forming the framework and compounding the fabric by using a set of mold to obtain a ceiling prototype, and then punching by using a cold mold and integrally curling and covering the base material and the fabric of the skylight opening to obtain the ceiling. The automobile interior ceiling made of the fiber-reinforced thermoplastic composite material has excellent dimensional stability and is more low-carbon and environment-friendly, and raw material leftover materials generated in the production process and products produced after the life cycle is ended are easy to recycle.

The invention relates to the technical field of spring production processes, and discloses a corrugated spring manufacturing process which comprises the following steps: S1, taking a steel wire rod main body with a rectangular section, winding into a corrugated circular ring, and cutting off at a position where the steel wire rod main body is wound for one circle; s2, laser welding is conducted on the cut-off position through optical fiber laser welding equipment, and a blank piece is obtained; s3, the blank is subjected to heat treatment to eliminate internal stress, and a semi-finished product is obtained; s4, the semi-finished product is subjected to surface treatment, and a finished product is obtained.The corrugated ring is directly formed, the corrugated treatment process is omitted while a flat ring is rolled, only stress heat treatment needs to be conducted on the product obtained after wave pressing forming, and the machining time and the production cost are saved; according to the process, the welding seam strength is optimized by optimizing laser welding conditions, oxidation and decarburization of workpieces are reduced by controlling the heat treatment heat preservation time after welding, meanwhile, the deformation stress of the spring is thoroughly eliminated, and the fatigue life and the use performance of the spring are more unified and stable.

The invention discloses ultra-high molecular weight polyethylene pipe production equipment, and particularly relates to the technical field of polymer plastic processing, the ultra-high molecular weight polyethylene pipe production equipment comprises an equipment box, and an extrusion heating mechanism is arranged at the top of the equipment box; the extrusion heating mechanism comprises a driving device which is fixedly installed at the top of the equipment box, the output end of the driving device is fixedly connected with a transmission shaft, one end of the transmission shaft is fixedly provided with a gearbox, and one side of the gearbox is fixedly connected with a fixing pipe. The raw materials are efficiently pretreated, it is ensured that raw material particles are uniform and fully mixed, a good foundation is laid for the subsequent plasticizing and extruding process, the quality and performance stability of the pipe are improved, the temperature requirements of the ultra-high molecular weight polyethylene pipe in different production stages can be met, the molecular structure of the pipe is more regular, and the production efficiency is improved. Therefore, the strength, toughness and corrosion resistance of the pipe are enhanced, and reliable technical support is provided for large-scale production of the ultra-high molecular weight polyethylene pipe.

The utility model provides a high-temperature charging barrel of a die-casting die, which comprises a charging barrel and a plurality of cooling water channels, the cooling water channels are arranged along the axial direction of the charging barrel, the cooling water channels are arranged in the lower half side wall of the charging barrel, a plurality of heating rods are arranged in the upper half side wall of the charging barrel, and the heating rods are distributed in the circumferential direction; the heating rod is arranged along the axial direction of the charging barrel; each heating rod is connected with a cable; and a thermocouple is arranged on the outer side wall of the charging barrel. The utility model ensures that the charging barrel pressure chamber is uniformly heated, so that axial cracks at the bottom of the pressure chamber sprue, interference between the charging barrel pressure chamber and the punch are reduced, strain of the pressure chamber is reduced, the service lives of the pressure chamber and the punch are prolonged, the production cost is saved, the flowability and feeding capacity of molten metal in the cavity are improved, and the mechanical property fluctuation of a casting is reduced; and low material temperature can be used for filling, and the risk of insufficient molten metal casting due to cold shut is reduced.

The invention belongs to the technical field of injection molding, and particularly relates to a toothbrush handle injection molding device and method.The toothbrush handle injection molding device comprises a fixed mold frame, a movable mold frame and a movable assembly, the fixed mold frame is fixed to an injection molding frame mold, and at least one movable auxiliary mold is arranged on the fixed mold frame and installed in the fixed mold frame in a telescopic mode; a mold cavity used for injection molding and filling is formed in the top of the movable auxiliary mold, the movable mold frame is located on the opposite side of the fixed mold frame, moves close to or away from the fixed mold frame, is arranged on one side of the fixed mold frame and moves forwards or backwards in the direction of the movable mold frame, and a movable mold core is fixed to the movable assembly in a penetrating mode; and a flowing path through which injection molding sol passes is arranged in the movable mold core. According to the invention, the to-be-injected sol is not influenced by the structure temperature during flowing, the component temperature of the internal structure is maintained, and during high-speed filling, the flow velocity length is increased and the flowing is stable, so that the material is more uniformly distributed in the whole mold cavity, and further, the injection molding quality can be improved, and the product size can be stabilized.

The invention discloses a preparation method of a rod-like selenium nano-carrier, and belongs to the technical field of nano-pesticides. The rod-like selenium nano-carrier is formed by converting chitosan modified amorphous selenium (a-Se) into single crystal ash selenium (t-Se). The amorphous selenium is initially spherical, and after chitosan modification, the spherical amorphous selenium is converted into single crystal ash rod-shaped selenium nanoparticles. The length of the rod-like selenium nano-carrier is 590-610 nm, the diameter of the rod-like selenium nano-carrier is 20-25 nm, the effective average particle size of the rod-like selenium nano-carrier is 90-110 nm, the drug loading rate is 39.28% + / -2%, and the encapsulation efficiency is 64.90% + / -3%. In addition, the invention also provides an application of the rod-like selenium nano-carrier in a nano bactericide material.

The invention relates to the technical field of leather processing, in particular to a leather forming processing device for automotive trim. The device comprises a pretreatment device and a mold device, the rear side of the mold device is connected and provided with a trimming device, the front side of the mold device is connected and provided with a heating device, and the mold device is internally provided and connected with a cooling device. The pretreatment device is used for improving the quality and the processing efficiency of leather, improving the consistency of products and effectively shortening the production cycle, the mold device is used for forming the leather, ensuring the size accuracy and effectively improving the consistency of the products, and the heating device is used for softening the leather, facilitating subsequent processing, improving the process effect and effectively improving the quality of the products. The cooling device is used for rapidly cooling leather, stabilizing the size and effectively improving the product precision, the trimming device is used for finely adjusting the leather and improving the finished product quality, and the safety monitoring device is used for guaranteeing the safety of the machining process and effectively improving the operation safety.

The invention relates to the technical field of quartz tube production, in particular to a photovoltaic quartz tube preparation process based on high-purity quartz sand. A feeding assembly is arranged on the upper side of a melting assembly, a screening assembly is arranged on the lower side of the feeding assembly, the screening assembly is located in the melting assembly, a driving assembly is arranged on the side of the feeding assembly, and the driving assembly is located on the upper side of the melting assembly. The driving assembly is used for driving the feeding assembly to rotate so as to uniformly feed quartz raw materials, and the feeding assembly is arranged, so that the quartz raw materials are poured into the melting assembly through the feeding assembly by a worker; the feeding assembly has magnetism, metal minerals contained in a quartz raw material are adsorbed out through the magnetism to purify the quartz raw material, and therefore the purity of the quartz raw material is improved, the purity of a quartz stock solution generated after melting is high, the size of a quartz tube is stable when the temperature changes, and the quality of the quartz tube is improved. And the accuracy and repeatability in the heating and cooling processes are ensured.

The invention belongs to the technical field of water ecological filtering materials, and particularly relates to a bioactive porous ceramic material and a production method thereof. The bioactive porous ceramic material is prepared from the following components in parts by weight: 8 to 20 parts of aluminate cement binding material, 1.0 to 2.0 parts of bamboo fiber, 1 to 7 parts of aluminum dihydrogen phosphate, 1 to 2 parts of rubber powder, 0.1 to 0.5 part of starch ether, 0.1 to 0.5 part of nano titanium oxide, 60 to 80 parts of pearl sand, 5 to 10 parts of zeolite powder, 7 to 20 parts of expanded perlite micro powder and 18 to 22 parts of water. The production process comprises the steps of master batch preparation, batch production, molding, drying and firing, detection, packaging, warehousing and the like, the process is simple, the firing temperature is low, the period is short, and the production cost is low. The product soluble water is alkalescent, and under the irradiation of sunlight, lamplight or ultraviolet rays, the dissolved oxygen concentration of water can be improved, a healthy living environment is provided for nitrifying bacteria, and the nitrifying efficiency of the nitrifying bacteria is improved.

The utility model relates to the technical field of automobile sun visors, and discloses a novel automobile sun visor with a fiber interlayer, which comprises a sun visor body, limiting grooves are arranged on two side walls of the sun visor body, springs are arranged in the two limiting grooves, one end of each spring is fixedly connected with the inner wall of the sun visor body, and the other end of each spring is fixedly connected with the fiber interlayer. The other end of the spring is fixedly connected with a limiting column, the limiting column is slidably connected with the limiting groove, and a mounting groove is formed in the sun shield body; through the arrangement of the limiting column, the spring, the connecting plate, the connecting rod, the sliding block and the movable plate, the sun shield body can be conveniently taken down from a vehicle body, then a groove in the vehicle body is independently cleaned, and the mode is simpler and easier to operate; and through the arrangement of a baffle, a hinge column, a connecting belt, a first magnet and a second magnet, the situation that when the sun shield is put down to shield sunlight, a cosmetic mirror is reflected into an eye curtain, and the appearance effect is affected is avoided.

The intelligent quick-dry fabric comprises a fabric body, the fabric body comprises a yarn A and a yarn B, the yarn A is the yarn with the moisture absorption deformation characteristic, and the yarn B is the yarn with the deformation amount smaller than or equal to 5% after moisture absorption; the fabric body comprises a plurality of basic circulation unit structures, in one basic circulation unit structure, yarn A is woven to form a complete A coil row, the A coil row comprises A coils, yarn Bm and yarn Bm + n are interwoven around the yarn A, the yarn Bm is woven to form a Bm coil row, the Bm coil row comprises Bm coils, the yarn Bm + n is woven to form a yarn Bm + n coil row, and the yarn Bm + n is woven to form a yarn Bm + n coil row. The yarn Bm + n coil courses comprise yarn Bm + n coils, n-1 coil courses are arranged between the Bm coil courses and the Bm + n coil courses, and the Bm coil courses and the Bm + n coil courses are mutually strung and looped on at least one coil wale. The air permeability is improved by means of moisture absorption change, and the quick-drying effect is achieved.

The utility model relates to the technical field of sealing strip finished product processing, and discloses a feeding mechanism and cutting equipment. The driving wheel and the pressing wheel are arranged in a manner of clamping the sealing strip; the sealing strip surrounds to form a storage buffer part; the second roller is propped against part of the sealing strip of the storage buffer part; the first detection piece is electrically connected with the second driving piece; according to the feeding mechanism and the cutting equipment, the driving wheel, the pressing wheel, the second rolling wheel and the material storage buffering part are arranged, the sealing strip is driven to move forwards by means of friction between the rolling wheels and the sealing strip, the height of the free side of the material storage buffering part can reflect the material storage amount of the sealing strip, and when the sealing strip is loosened or tensioned, namely the material storage amount overflows or is insufficient, the sealing strip can be cut off. And feeding is slowed down or increased in time, the sealing strip is in a natural state all the time, the roller and the storage buffer part provide double insurance for feeding work, and the purposes that the sealing strip is not stretched and deformed in the feeding process, and the size of the finished sealing strip is stable are achieved.

The invention belongs to the field of garment materials, and particularly relates to a comfortable knitted fabric finished by liquid ammonia and a preparation method of the comfortable knitted fabric. The comfortable knitted fabric is prepared according to the following steps that long stapled cotton serves as knitting yarn of bottom yarn and surface yarn, Sorona yarn added with jade powder and an antibacterial agent serves as connecting yarn of the bottom yarn and the surface yarn, a double-face twill jacquard structure weaving method is adopted for weaving, and double-face twill jacquard gray cloth is obtained; and soaking the double-sided twill jacquard gray cloth in liquid ammonia, and then taking out and drying to obtain the comfortable knitted fabric finished by the liquid ammonia. According to the method, antibacterial Sorona and long stapled cotton are adopted as weaving raw materials, and the method conforms to the general trend of environmental protection; the fabric prepared by the method has stable antibacterial performance, and is glossy, more wear-resistant, more crease-resistant, more stable in size and better in wearing comfort; in addition, the twill texture jacquard weave is arranged on the surface of the prepared fabric, and the requirements of more consumer groups can be met.

The invention relates to an all-dielectric self-supporting aerial optical cable which comprises a cable core, an inner sheath, a non-metal reinforcing layer and an outer sheath which are sequentially arranged from inside to outside. The cable core comprises a plurality of micro beam tubes which are twisted into a whole; a rigid non-metal reinforcing piece is embedded in the inner sheath; the non-metal reinforcing layer is twisted on the periphery of the inner sheath; and the outer sheath is coated on the non-metal reinforcing layer. According to the optical cable provided by the invention, under the clamping of the fitting, the clamping force borne by the outer sheath can be directly conducted to the non-metal reinforcing layer between the inner sheath and the outer sheath, and then the non-metal reinforcing layer transmits the clamping force to the rigid non-metal reinforcing piece through the inner sheath, so that the effective transmission of the clamping force is realized; therefore, the rigid non-metal reinforcing member can fully play a tensile role, so that the optical cable provided by the embodiment of the invention can be applied to small-span and relatively mild meteorological conditions, and also can be applied to medium-and-long-span and extreme meteorological conditions.

The utility model discloses a quick positioning structure of an elastic strip forming die, which comprises a bottom plate and a lower die plate arranged on the bottom plate, two shafts are symmetrically arranged at two ends of the lower die plate, rollers and positioning pin mounting plates are sleeved on the shafts, and positioning pins are arranged on the positioning pin mounting plates, and end faces of the positioning pins are used for positioning end faces of toe ends of elastic strips. Compared with the prior art, the positioning structure has the positive effects that an elastic strip product produced by adopting the positioning structure is stable in size and good in use effect, can be widely used in the rapid production of the elastic strip, and has the following specific advantages that: 1) the positioning pin synchronously rotates with the end surface of the toe end of the product in the forming process, so that the elastic strip can be quickly formed; the end face of the toe end of the product is always attached to the positioning pin, the positioning effect is effectively achieved, and the size of the product is more stable. And 2) the positioning structure is small in occupied space, simple in structure and low in manufacturing cost, and can be applied to the forming die of the quick elastic strip.

The utility model discloses a multi-specification different parting surface O-shaped rubber sealing ring forming mould which comprises an upper mould plate and a lower mould plate, a plurality of upper mould core holes are arranged on the upper mould plate, a plurality of lower mould core holes are correspondingly arranged on the lower mould plate, a plurality of mould core groups are arranged on the upper mould plate and the lower mould plate, and the mould core groups are arranged on the upper mould plate and the lower mould plate. Each mold core group is provided with different mold cavities and parting surfaces, each mold core group comprises a plurality of mold cores, each mold core comprises an upper mold core and a lower mold core, the upper mold core is mounted in an upper mold core hole of the upper mold plate in a hanging manner, and the lower mold core is mounted in a lower mold core hole of the lower mold plate in a hanging manner. According to the utility model, O-shaped rubber sealing rings with 45-degree parting surfaces and 180-degree parting surfaces, which have the same rubber material and vulcanization three elements in the same range and have different sizes and specifications, are simultaneously processed and formed in the same set of die, so that the processing efficiency is improved, and the production cost is reduced.

The invention relates to a heat-treatment-free high-toughness aluminum-magnesium-silicon alloy and a preparation method thereof, belongs to the technical field of aluminum alloys, and solves the problems that a heat-treatment-free aluminum alloy in the prior art is not high in toughness and cannot meet the production of large thin-wall components. The invention relates to a heat-treatment-free high-toughness aluminum-magnesium-silicon alloy, which comprises the following elements in percentage by mass: 7 to 9 percent of Mg, 2 to 3 percent of Si, 0.1 to 0.4 percent of Mn, 0.05 to 0.2 percent of Ti, 0.05 to 0.1 percent of Zr, 0.01 to 0.05 percent of B, 0.01 to 0.1 percent of Cu, 0.05 to 0.2 percent of Zn, 0.05 to 0.1 percent of Ca, 0.05 to 0.1 percent of RE, 0.003 to 0.005 percent of Be, 0 to 0.15 percent of Fe, less than or equal to 0.15 percent of other uncontrollable impurity elements and the balance of Al. And preparation of the heat-treatment-free high-toughness aluminum-magnesium-silicon alloy is achieved.

The invention discloses a supercritical carbon dioxide foamed rubber material and a preparation method thereof, and belongs to the technical field of foamed rubber. The foaming rubber is prepared from the following raw materials in parts by weight: 70 to 80 parts of natural rubber, 20 to 30 parts of chloroprene rubber, 20 to 30 parts of white carbon black, 4 to 5 parts of plasticizer, 1 to 1.5 parts of activating agent, 1 to 1.5 parts of coupling agent, 2 parts of anti-aging agent, 1.8 parts of sulfur, 3 to 4 parts of accelerant, 0.2 part of scorch retarder, 1 to 1.5 parts of potassium adipate, 5 parts of zinc oxide, 2 parts of magnesium oxide, 2 parts of stearic acid and 3.5 to 3.65 parts of supercritical carbon dioxide fluid. The continuous production of the rubber physical foaming sole can be realized, the foaming rubber vulcanization and foaming process can be completed by a one-time process, the size is basically stable after mold stripping, the sole can be used for subsequent shoemaking production without further processing, and the sole with relatively complex appearance size can be produced. The method is suitable for preparing the foamed rubber sole.

The invention discloses a preparation method of an electrostatic chuck, which belongs to the technical field of electrostatic chucks and comprises the following steps: S1, preparing an electrostatic chuck base; s2, ceramic slurry is prepared and subjected to tape casting, and two laminated bodies are obtained through lamination; s3, glue discharging and sintering are conducted on the laminated body, and a first sintered body and a second sintered body are obtained; s4, processing the first sintering body and the second sintering body; s5, the first sintered body is subjected to silk-screen printing and drying; s6, the printed first sintered body is sintered for the second time, and a third sintered body is obtained; and S7, the third sintering body and the second sintering body are combined through glue with high thermal conductivity, and then the third sintering body and the second sintering body are combined with the electrostatic chuck base through glue with matched thermal conductivity. Through metallization of the processed ceramic substrate, the obtained electrostatic chuck can better control the parallelism of the electrode and the upper surface, and meanwhile, an electrode layer with more stable morphology and size can be obtained through detection and screening.

The utility model discloses a printing and dyeing cloth heat-setting machine, which relates to the technical field of printing and dyeing processing equipment, and comprises a heat-setting machine main body, a first support frame arranged on the left side of the heat-setting machine main body, a cloth releasing roller arranged on the surface of the first support frame, a cloth main body wound on the surface of the cloth releasing roller, and a second support frame arranged on the right side of the heat-setting machine main body, the first guide roller, the second guide roller and the cloth main body pass through the cloth inlet, the inner top surface of the heat setting machine main body is fixedly connected with a fixed block, the lower surface of the fixed block is provided with a sliding groove, and the surface of the tension adjusting roller abuts against the cloth main body. The device is simple in structure and convenient to operate, force applied to a cloth body can be rapidly adjusted, the cloth body cannot be wrinkled or deformed, it is guaranteed that the size and shape of printed and dyed cloth are kept stable, operation is easy and convenient, and the purpose of better heat setting of the cloth body is achieved.

The invention belongs to the technical field of welding, and particularly relates to a sealing welding method for a nuclear power spent assembly overhanging type pipe and pipe plate. Positioning expansion is carried out by adopting a mechanical method; automatic TIG helium arc welding is adopted for welding, helium and argon mixed gas serves as welding shielding gas, a cerium tungsten electrode serves as an electrode, and all-position rotary welding is conducted after arc starting. Spot welding is replaced by mechanical expansion, and almost no gap exists between the tube and the tube plate, so that the welding method is more stable; according to the method, the welding quality is stable (the minimum leakage drift diameter of the root is stable, and welding defects do not exist), the welding efficiency is high (the welding efficiency is two times that of conventional argon arc welding), and the method has important significance on nuclear power outward-extending pipe and pipe plate seal welding.

This utility model relates to an ultra-thin rolled copper stamped fuse assembly. The fuse assembly includes a sheet copper substrate made of rolled copper with a thickness in the micrometer range, a first PI thermosetting film and a second PI thermosetting film respectively covering the upper and lower surfaces of the sheet copper substrate; the sheet copper substrate has a wavy fuse portion with a line width of 0.15±0.02mm. This utility model uses a high-precision die-cutting method to punch the ultra-thin rolled copper foil, directly forming a fuse semi-finished product. In particular, the extremely fine fuse portion is punched in one step, avoiding defects such as edge deformation caused by multiple punchings, ensuring stable dimensions and performance of the fuse portion. High-speed rotary die-cutting is then used for efficient and precise production, encapsulating the fuse portion within the film material, exposing the opening area and end area for electrical connection, improving production efficiency and subsequent use efficiency. The overall production efficiency can be increased to 5000pcs / H, and the yield rate to approximately 95%.

The utility model relates to a kind of wool knitted fabric, including the fabric body that warp fiber bundle warp is formed, and the fabric body is formed by multiple rows of fiber bundle arranged along front-back direction, wherein the adjacent three fiber bundles of front-back direction are a fiber bundle group, all fiber bundles are arranged to form multiple the fiber bundle group sequentially arranged along front-back direction, and the three fiber bundles of each fiber bundle group are wool fiber bundle, synthetic fiber bundle and antistatic fiber bundle respectively.The utility model solves the technical problem that the overall thickness of the fabric is relatively thick due to the stability and antistatic property of the fabric being improved by laminar compounding of the existing fabric.

The invention provides a preparation process of a warm-keeping, breathable, antibacterial, anti-mite and anti-static cashmere overcoat lining, and belongs to the technical field of lining fabrics. Based on the selection of the satin weave crepe plain satin fabric, strict control of the degumming rate, and the selection of the Newton blue acid dye for constant tension jig dyeing machine dyeing and the preshrinking process, the color fastness, breaking strength, luster and soft hand feeling of the fabric are synergistically improved, the possibility of pilling and the stitch slipping condition are reduced, and the produced overcoat lining fabric is soft in hand feeling, good in hand feeling and good in hand feeling. The fabric is soft in gloss, stable in size and suitable for frequent wearing, washing injury is avoided, and the problems of scratching and hooking injury and poor antistatic property in wearing are solved.

The invention discloses a tempered glass cover one-time forming manufacturing method which comprises the following steps: melting raw materials for producing glass into glass feed liquid through a glass melting furnace, shearing the glass feed liquid into glass feed liquid with corresponding weight through a servo shear according to the size of a glass cover, feeding the glass feed liquid into a pressing machine through a glass feed channel, and performing one-time pressing to obtain a required glass cover prototype; the concave surface is polished with natural gas to be smooth; a reverse manipulator is used for taking the glass cover prototype subjected to fire polishing from the pressing machine mold to a cup supporting mold, and after a laser machine is used for drilling holes, natural gas is used for fire polishing of a convex surface to enable the surface to be smooth; feeding the glass cover prototype into a tempering fan for tempering molding; and S4, cooling after molding and tempering, and inlaying a steel ring to obtain a finished product. A glass cover prototype can be rapidly produced, a tempered glass cover is processed through a fire polishing tempering process, the finished product quality is good, the raw material utilization rate is greatly improved, the energy consumption is reduced, the cost is greatly reduced, the production efficiency is improved, different specifications can be produced according to needs, and the size is stable.

A roof tile (100) wherein the roof tile comprises a base element (110) and further comprises a transparent top element (120) wherein the roof tile (100) comprises a set of solar panel elements (130) wherein the solar panel elements are comprised between the top element (120) and the base element (110), below or inside the top element wherein the roof tile (100) comprises a contoured section, the invention relates to a roof tile (100) comprising a base element (110) comprising a contoured section comprising solar panel elements (130), where the contoured section allows solar rays to be received within the roof tile (100) at different angles, where the base element (110) comprises concrete or clay. The present disclosure also relates to a roof comprising a plurality of roof tiles, a method for producing roof tiles, and a machine for producing roof tiles.

The invention provides a lithium-carbon composite material, a preparation method thereof and a negative electrode containing the lithium-carbon composite material. The lithium-carbon composite material comprises a carbon sintered porous skeleton containing carbon nanotubes and silver wires, wherein gaps of the carbon sintered porous skeleton are filled with lithium alloy and metal lithium. The lithium-carbon composite material disclosed by the invention is high in structural strength (tensile strength) and suitable for industrial production. In addition, the negative electrode adopting the lithium-carbon composite material disclosed by the invention is high in energy density and stable in structure in a battery cycle process, so that the cycle life of the battery is long.

The invention belongs to the technical field of brazing, and particularly discloses a vacuum brazing method for chromium-zirconium-copper and stainless steel, a brazing joint and application, and the method comprises the following steps: cutting chromium-zirconium-copper and stainless steel base materials into round bars: preparing a Ni coating on the surface of the stainless steel after the stainless steel base material is pretreated; the Ag15CuP brazing filler metal is preset on a to-be-welded interface and placed in a vacuum brazing furnace, vacuumizing and heating are conducted, and then the Ag15CuP brazing filler metal is cooled to the room temperature; and low-temperature stress relief annealing is conducted on a brazed finished product, and furnace cooling is conducted to the room temperature. According to the vacuum brazing method for the chromium-zirconium-copper and the stainless steel, the brazing joint and the application, the novel silver-saving brazing filler metal Ag15CuP is selected as the brazing filler metal, efficient and reliable connection of the chromium-zirconium-copper and the stainless steel is achieved through the synergistic process scheme of stainless steel surface nickel plating modification, gradient temperature control vacuum brazing and low-temperature annealing, and the service life of the chromium-zirconium-copper and the stainless steel is prolonged. The obtained brazed joint is excellent in high-temperature and low-temperature cycle resistance, and can meet the service requirements of key components such as an airspace engine combustion chamber and a heat exchanger.

The invention discloses an adjusting device for thermal deformation correction of an aero-engine turbine case, which comprises a base, a circle of fixing mechanism is arranged on the periphery of the top surface of the base in a surrounding manner, a circle of correction assembly is arranged on the inner side of the fixing mechanism in a surrounding manner, and a lifting lug bolt is further arranged on the top surface of the base. The recovery problem of turbine case deformation is solved.