53results about How to "Avoid embrittlement" patented technology

The invention belongs to the technical field of polymer composite materials, and particularly relates to a high-strength corrosion-resistant ABS composite flame-retardant material and a preparation method thereof. The ABS composite flame retardant material is prepared from the following raw materials in parts by weight: 60 to 75 parts of acrylonitrile-butadiene-styrene, 10 to 15 parts of glass fiber, 0.5 to 1 part of gamma-aminopropyltriethoxysilane, 8 to 12 parts of phosphorus-nitrogen flame retardant, 1 to 3 parts of nano aluminum oxide, 0.5 to 1 part of potassium perfluorooctane sulfonate, 1 to 3 parts of epoxy modified graphene oxide and 5 to 8 parts of modified nano montmorillonite. Through the synergistic effect of the epoxy silane modified graphene oxide and the long-chain alkylsilane modified nano montmorillonite, the mechanical property, the corrosion resistance and the flame retardant effect of an ABS matrix are remarkably enhanced. The modified material maintains toughness under high strength, effectively avoids embrittlement, and shows excellent impact resistance and environmental protection property.

The invention relates to a welding method of a Q370qENH + S32168 weather-resistant stainless steel composite steel plate. Comprising the steps that the butt joint position of two to-be-welded weather-proof stainless steel composite steel plates is machined into inclined faces, the inclined faces of the butt joint position are spliced into a V-shaped opening, a splash-proof protection belt is pasted, a ceramic liner is placed, base layer bottoming welding is conducted, base layer filling welding is conducted, transition layer welding is conducted, and composite layer welding is conducted. According to the method, it is guaranteed that a welding seam of a base layer base layer welding layer has good weather resistance and mechanical performance, and it is guaranteed that the corrosion resistance of the welding seam is matched with that of a Q370qENH weather-resistant steel base layer; the welding thickness of the transition layer welding layer made of dissimilar materials is controlled, the non-uniformity of the structure of the transition position is improved, the welding stress is reduced, embrittlement and crack generation of the transition layer welding layer are prevented, and it is guaranteed that the transition layer welding layer has excellent plasticity and toughness; and the corrosion resistance requirement of the welding layer of the composite layer is ensured.

The invention belongs to the technical field of battery box body welding, and discloses a water-cooling battery box body applying an FSW welding technology, the water-cooling battery box body comprises an aluminum alloy box body, the aluminum alloy box body comprises an upper shell, a lower shell, a fixed side skirt and a predetermined welding groove, the upper shell and the lower shell are symmetrically arranged up and down, and the upper shell and the lower shell are symmetrically arranged up and down; a fixed side skirt is integrally formed on the outer side faces of the ends, close to each other, of the upper shell and the lower shell. According to the method, the battery box is fixed through the clamp made of steel, the bolts and the positioning pins, displacement in the welding process is effectively prevented, the welding precision and stability are guaranteed, meanwhile, fine adjustment is conducted on welding parameter setting, including the rotating speed of a welding tool, the feeding speed, the diameter of the tool, the shoulder width of the tool and the like, and welding quality is improved. Therefore, the uniformity of the welding process and the quality of a welded joint are ensured. In the welding process, preheating treatment and reasonable welding sequence and welding position planning are adopted, and the welding efficiency and the joint quality are further improved.

The invention belongs to the technical field of metal material science, and particularly relates to a heterostructure plasticized magnesium-based composite material, a preparation method and application. A preparation method of a heterostructure plasticized magnesium-based composite material comprises the following steps that S1, AZ61 magnesium alloy powder, pure titanium carbide and stearic acid are mixed and subjected to low-speed and high-speed ball milling, mixed powder is obtained, and powder loading and cold pressing are conducted after the powder is cooled; and S2, the powder obtained after cold pressing in the S1 is subjected to a gradient heating exhaust vacuum hot pressing process, cooling is conducted, thermal deformation is conducted, and the heterostructure plasticized magnesium-based composite material is obtained. The plasticity of the prepared magnesium-based composite material is obviously improved, and the application potential of the magnesium-based composite material in the industrial field is expanded.

The invention discloses a laser splicing welding joint for ultrahigh-strength hot-formed steel and a manufacturing method of the laser splicing welding joint, the welding joint comprises a base metal area and a melting area, and the base metal area and a welding line area are mainly composed of tempered martensite; the mass percent of the carbon content in the base metal area is not lower than 0.2%, and the mass percent of the average aluminum content in the weld joint area is not higher than 1.8%. The welding joint is manufactured through the following steps that a pair of high-strength steel workpieces is provided to be in butt joint to execute laser welding, and in the welding process, laser filler wire welding is adopted to obtain a preliminary welding seam; performing a quenching process on the primary welding seam to obtain a final welding seam; the quenching process comprises a heating and heat preservation stage and a cooling stage; the time for quickly transferring and cooling the welding part is t1, and the temperature of the welding part is T1; the cooling stage comprises a stage from T1 to the temperature T2 and a stage from T2 to the room temperature through slow cooling, the duration time of the rapid cooling stage is t2, and the duration time of the stage from slow cooling to the room temperature is t3.

The invention discloses a welding process control method for a W-shaped structure of a light aviation radiator. The welding process control method comprises the following steps that a gas collecting hood, a connector pipe nozzle, a corrugated plate and a barrel are subjected to positioned welding; the inner cavity of the corrugated plate and the inner cavity of the gas collecting hood are sealed; high-purity argon is introduced from the position of a connector pipe nozzle, an argon detector is connected to the far end of the corrugated plate to detect the purity of argon in an inner cavity of the corrugated plate, a welding gun dragging cover is placed at a weld joint after the purity reaches the standard, then a transparent ceramic nozzle is installed on one end face of the welding gun dragging cover, and a gas blocking and heat absorbing tool is installed on the corrugated plate; in addition, argon is introduced to protect the welding seam area on the back face of the barrel; welding parameters are adjusted, welding of the welding seam of the W-shaped structure is carried out, and after welding is finished, welding is stopped for 15 seconds or above, and various protection tools can be disassembled. Through the control method, the material embrittlement problem in the welding process is solved, and the product stability is improved.

The application relates to the technical field of lithium battery diaphragm, in particular to a high-stability lithium battery diaphragm and a preparation method thereof. The high-stability lithium battery diaphragm is prepared by the following steps: after a polypropylene film is irradiated by ozone and ultraviolet light in sequence, pre-deposition and pre-grafting are carried out on the surface of the polypropylene film, and then ultraviolet radiation treatment is carried out. The application realizes synergistic effect of nano-enhancement and self-repairing, solves the stability problem of traditional PP diaphragms in long-term cycles, and provides a reliable diaphragm solution for high-energy-density lithium batteries.

The invention discloses a sintering furnace for preparing low-dielectric ceramic, and relates to the technical field of ceramic preparation. The sintering furnace comprises a sintering furnace body, a separation cage, a rotary switching mechanism and a collection box, the sintering furnace body comprises an outer furnace body and an inner furnace body, and the inner furnace body is fixedly installed in the outer furnace body. The separation cage is pushed into the inner furnace body, so that the low-dielectric ceramic is located in a cage cover of the separation cage, and in the glue discharging stage of low-dielectric ceramic sintering, the separation rotating plates are rotated, so that the separation rotating plates in the outer ring are converted into the mutually-attached sealing state from the interval state pointing to the axis, and the low-dielectric ceramic sintering is achieved. When gas and solid waste are generated during glue discharging of the low-dielectric ceramics, solid dust and particles fall onto the surfaces of the partition rotating plates which are tightly arranged, the gas drives powder on the partition rotating plates and powder on the low-dielectric ceramics to be discharged out of the furnace, and the situation that the powder falls onto a heating part in the inner furnace body is avoided; and the phenomena of oxidation, corrosion, non-uniform temperature distribution and the like of a heating part are avoided.

The utility model provides a kind of plastic coating device applied to metal tubular product inner wall, it is specifically related to tubular product inner wall plastic coating technical field.The device includes pit, PLC controller and device ontology;The device ontology includes the base of immediate pit rear side ground installation;The base top is close to pit one side and is provided with mounting stand;The mounting stand is rotationally provided with carousel away from the side of base;The carousel is close to pit one side and is fixed with connecting disc;The pit is provided with bunker box;The top of bunker box is provided with fixed platform;The rear end of fixed platform is fixed with the front end bottom of connecting disc;Bunker box is rotated 360 ° clockwise or counterclockwise with carousel by connecting disc.Compared with traditional plastic coating equipment, the utility model is lower for metal tubular product inner surface cleanliness requirement, convenient recovery plastic coating material, plastic coating effect is uniform and can be applied to multiple size, multiple shape tubular product plastic coating process.

The invention relates to the field of flux-cored wires, in particular to an electric-arc welding flux-cored wire based on C4 steel and a preparation method of the electric-arc welding flux-cored wire, and aims to solve the problems that an existing electric-arc welding flux-cored wire for the C4 steel is often unstable in welding quality, so that the strength of a welded joint is insufficient, and the corrosion resistance is poor. According to the preparation method, the fluorine-doped graphene aerogel serves as an important component of the arc welding flux-cored wire, so that the pore defect rate and the crack generation probability in the welding process can be effectively reduced, and the tensile strength and toughness of a welding area can be remarkably improved; according to the electric-arc welding flux-cored wire, the welded C4 steel part has more excellent mechanical performance and corrosion resistance, the overall quality of a welding area is improved, the overall fatigue life of the structure is prolonged, the damage resistance of the structure is improved, the electric-arc welding flux-cored wire is suitable for various welding technologies, the requirements under different welding conditions can be met, the technology is simple, operation is easy, and popularization is easy. The method is suitable for large-scale production.

The utility model relates to the technical field of nuts, and particularly discloses a heat-corrosion-resistant nut which comprises a nut body. The cold-resistant layer, the reinforcing layer and the heat-resistant layer are arranged on the outer surface of the nut body from inside to outside; the protective shell comprises a first protective shell and a second protective shell which are used for forming the protective shell, buckles are arranged at the two ends of the first protective shell, and clamping grooves matched with the buckles are formed in the two ends of the second protective shell; and the protective sleeve is arranged on the outer surface of the protective shell in a sleeving manner. The heat-corrosion-resistant nut has excellent environmental adaptability, mechanical strength and protection capacity, and can be widely applied to various occasions needing to bear high-temperature, low-temperature or corrosion environments.

The utility model relates to the technical field of tow drying, and discloses a device for drying tows by using hot air, which comprises a base, an air outlet shell is fixedly connected onto the base, an outer shell is fixedly connected onto the air outlet shell, tensioning wheels are rotatably connected onto the inner walls of the left side and the right side of the outer shell, and an air return shell and a partition air duct are fixedly connected onto the inner wall of the outer shell. A heating wire is arranged in the partition air channel and fixedly connected to the inner wall of the shell, a connector is fixedly connected to the heating wire, second ventilation holes are formed in the positions, corresponding to the partition air channel, of the outer walls of the two sides of the air return shell, supporting plates are arranged on the partition air channel at intervals, and first ventilation holes are formed in the supporting plates. According to the utility model, the air duct partition structure is designed, the temperature of each partition is independently controlled, the hot air temperature of each partition can be accurately controlled, and the hot air temperature in each partition can be flexibly adjusted according to the decreasing trend of the water content in the tow drying process.

This invention relates to the field of welding deformation prevention technology and provides a welding deformation prevention and fixing device for membrane wall tubes. The device includes a welding table with a fixing frame fixedly connected to it. The fixing frame has a fixing mechanism, and the fixing mechanism contains a cooling channel that can be connected to an external water-cooling tank via a water pipe and pump. The device also includes a control system comprising a clamping pressure adaptive control module. This module constructs an adaptive control model based on a reference clamping force, transient instability probability, and current wall tube vibration intensity, outputs a dynamic clamping force setpoint, and controls the fixing mechanism. This invention can dynamically adjust the clamping force of the fixing mechanism according to the transient instability probability and real-time vibration intensity of the membrane wall tube during welding. This makes the clamping force no longer a static preset value but can respond in real time to dynamic changes during welding, effectively addressing the problem of insufficient static constraint force when instantaneous thermal stress or vibration intensification occurs.

The invention relates to the technical field of composite films, in particular to a flame-retardant composite film and a preparation method thereof. The composite film is of an ABA type symmetrical three-layer co-extrusion structure, and functional division and synergistic interaction are achieved by concentrating a main flame-retardant function on a core layer (B layer) and distributing hydrolysis resistance and mechanical enhancement functions on a surface layer (A layer). The layer A comprises crystalline polyester, reinforcing master batch and an interface reinforcing agent; the layer B comprises crystalline polyester and composite flame-retardant master batch; the preparation method mainly comprises the following steps: respectively preparing the reinforced master batch and the composite flame-retardant master batch; respectively mixing the raw materials of the layer A and the layer B, drying and melting; co-extruding and casting through a three-layer co-extrusion die head with gradient temperature field control, and quenching a cast sheet; and preheating the cast sheet, and then carrying out synchronous two-way stretching, heat setting and cooling rolling. The film prepared by the invention has excellent halogen-free flame retardance, outstanding damp-heat aging resistance and high mechanical strength, and is suitable for the field with strict requirements on safety and durability.

The present application relates to a kind of low-carbon low-alloy welding wire and its preparation and welding method, belong to welding material technical field, solve the existing welding wire for high-strength material welding when easily produce hot crack, pore, coarse grain and other defects and weld metal's strength and low temperature toughness is insufficient, with the problems such as poor performance matching of base material.The present application provides a kind of low-carbon low-alloy welding wire, the component in the welding wire is as follows according to mass percentage: C 0.04~0.08%, Si 0.30~0.50%, Mn 1.6~2.0%, Cr 0.15~0.35%, Ni 3.5~4.0%, Cu 0.008~0.01%, Mo 0.007~0.01%, V 0.0005~0.001%, Ti 0.02~0.07%, Al 0.01~0.018%.The welding wire is designed by component, significantly improve the mechanical properties and low temperature toughness of welded joint, especially suitable for the welding of P690QL2 steel;Combined with the welding method of use, welding performance is better.

The application relates to the technical field of hoisting belts, and provides a flexible bearing material for a fatigue-resistant high-strength hoisting tool and a preparation method thereof. The material takes UHMWPE fibers or aramid fibers as a substrate, is activated by low-temperature oxygen plasma, is sequentially subjected to glycidyl methacrylate grafting to introduce epoxy sites, end-amino hyperbranched PAMAM chain extension to construct a multistage active interface, is subjected to a silane coupling agent containing a benzotriazole group to construct a weather-resistant layer, is then loaded with a negative nano-titanium dioxide and polyethylene imine composite system, and is finally crosslinked and solidified by ethylene glycol diglycidyl ether. The application strengthens the interface bonding force through a multistage covalent bonding surface modification structure, simultaneously improves the fatigue resistance, weather resistance and wear resistance of the material, and solves the problems of weak interface bonding of existing hoisting bearing materials, easy wear and aging in cyclic service, and short fatigue life.

The utility model discloses a safety pressure relief valve structure of a high-pressure storage tank of a hydrogen energy storage system. The safety pressure relief valve structure comprises a pressure relief valve shell, a pressure relief valve element and a pressure relief valve body which are sequentially connected to form a pressure relief channel. A through opening is formed in the end, connected with the pressure relief valve element, of the pressure relief valve shell, and a plugging block pressed at the through opening through a spring is arranged in the pressure relief valve element. A sealing groove is formed in the pressure relief valve body, a plurality of graphite rings are arranged in the sealing groove, honeycomb holes communicated with the sealing groove are further formed in the pressure relief valve body, and pressure relief holes communicated with the honeycomb holes are formed in the tail end of the pressure relief valve body. According to the safety relief valve structure of the high-pressure storage tank of the hydrogen energy storage system, a main sealing interface is formed by the plugging block pre-tightened by the spring and the through opening, a labyrinth type sealing path is formed in cooperation with the staggered notch of the graphite ring, double-sealing protection is achieved, the sealing position of the plugging block can be adjusted in a self-adaptive mode along the guide sliding groove when pressure fluctuates, the contact pressure of the sealing face is effectively balanced, and the safety of the high-pressure storage tank of the hydrogen energy storage system is improved. The sealing reliability under the long-term high-pressure working condition is remarkably improved, and leakage of trace hydrogen is avoided.

The utility model provides a kind of welding cooling device of stator bar, including clamp and air cooling clamping monomer, two air cooling clamping monomers are placed axially symmetrical and constitute air cooling clamp, two ends of air cooling clamp are clamped by clamp, the inside of air cooling clamping monomer is equipped with several ventilation grooves and two horizontal air ducts, and the side of air cooling clamping monomer is equipped with first air inlet, second air inlet and stator bar clamping groove.The utility model has the beneficial effects that (1) dry cooling eliminates the risk of damp, guarantees insulation performance;(2) multi-channel airflow structure realizes uniform and efficient heat dissipation;(3) double air inlet linkage heat dissipation.

This invention relates to the field of tobacco processing technology, and particularly to a sweet-scented granular tobacco stem and its processing technology. The processing technology includes the following steps: S1, Preparation of coarse granular tobacco stem: The tobacco stem raw materials are screened by size, washed, stored, pressed, cut once, and cut twice to obtain coarse granular tobacco stem; S2, Popping the stem in a popcorn machine: The coarse granular tobacco stem is fed into a popcorn machine for roasting, kept warm and pressurized, and then quickly depressurized to normal pressure to obtain granular tobacco stem with a uniform microporous structure; sieving; S3, Flavoring the tobacco stem: The sieved granular tobacco stem is fed into a roasting equipment, a natural sweetener is added, and roasting is performed, controlling the moisture content between 12-14%, to obtain the finished sweet-scented granular tobacco stem. The sweet-scented granular tobacco stem obtained by this invention has a regular and uniform shape, rich flavor layers, and a long aroma retention time. The overall quality of the tobacco stem is significantly improved, and it can be effectively applied to cigarette production to enhance the competitiveness of cigarette products.

This invention relates to the field of spacecraft thermal control technology, specifically to a fiber-reinforced flexible composite substrate for deployable space radiators and its preparation method. The method first involves cryogenically treating polyimide fibers with liquid nitrogen, weaving them into a fabric, and then subjecting them to gradient heating and surface carbonization to obtain a carbonized fiber-woven reinforcement. Simultaneously, boron nitride nanosheets and carbon nanotubes are covalently linked via amide bonds and coated with polydopamine to obtain a composite thermally conductive filler, which is then dispersed in polyimide resin. Finally, the resin is impregnated onto the surface of the reinforcement and the interior of the fiber bundles, and then cured to obtain the final product. In this invention, the carbonized layer of the fiber-woven fabric forms thermally conductive channels in both the warp and weft directions, and the composite thermally conductive filler forms a thermally conductive network within the matrix. Together, they construct a dual-network thermally conductive structure, giving the substrate excellent thermal conductivity, flexibility, and lightweight properties, making it suitable for high-power deployable spacecraft radiators.

The purpose of the present invention is to provide a laminate which has excellent handling properties when attached to an adherend, has excellent durability in a dry state, and has no difference in characteristics of outermost layers on both surfaces. Provided is a laminate which has excellent handling properties when attached to an adherend by laminating, in the order A / B / C / B / A, an anti-adhesion layer (A) that contains a polylactic acid-based resin and has a thickness of 10-500 nm, a water-soluble film (B) that contains a water-soluble resin and has a thickness of 1-18 [mu] m, and a water-soluble nonwoven fabric (C) that has a thickness of 80-550 [mu] m, in which the density and structural characteristics of the cross section are specified, and which has excellent adhesion properties when attached to the adherend. And has excellent durability in a dry state, and there is no difference between the two surfaces.

The invention relates to the technical field of polyethylene pipes, and discloses an anti-freezing, wear-resistant and corrosion-resistant polyethylene pipe which is composed of multiple layers of structures. Comprising a polyethylene base layer, a barrier layer I, a first polyethylene layer, a barrier layer II, a first polyurethane layer, a barrier layer III, a second polyethylene layer, a second polyurethane layer, a reinforced woven layer, an anti-freezing mixed layer and a corrosion-resistant mixed layer. And due to the multi-layer structural design, the use performance of the pipe in different environments is effectively improved. By wrapping the polyethylene base layer with the barrier layer, permeation of oxygen and water vapor can be effectively prevented, so that the problem of embrittlement of the pipe in a low-temperature environment is avoided. And meanwhile, the polyurethane layer not only improves the flexibility and tear resistance of the pipe, but also enhances the wear resistance of the pipe. The tensile strength and compressive strength of the pipe are further improved due to the arrangement of the reinforced braid layer, and stable use under severe conditions is ensured.

The invention discloses a high-strength plant cellulose-based composite paperboard and a preparation method thereof, belongs to the technical field of paperboard materials, and aims to solve the technical problem that the strength and wet strength retention rate of a plant fiber-based composite paperboard in the prior art need to be further improved. The composite plant fiber layer is composed of a plant fiber layer and interface layers arranged on the two sides of the plant fiber layer in a modifying mode. A plant fiber layer is prepared through CMC modified plant cellulose, a PEG modified inorganic reinforcing agent and a bio-based toughening agent reinforced plant fiber, a composite structure of an interface layer, a fiber layer and an interface layer is formed by arranging a double-interface layer containing lignin nano particles / carboxylated nano cellulose, and a hot-pressing curing process is combined, so that the lignin / carboxylated nano cellulose composite fiber is prepared. The strength and toughness of the plant fiber-based composite paperboard are effectively improved, and the wet strength retention rate of the material is also effectively improved.

The utility model relates to the technical field of paper drying equipment, in particular to a paper drying device. Comprising a machine box and an air supply pipe, four temperature control areas are sequentially arranged in the machine box, the temperature control areas are arranged at intervals and form a backflow channel for airflow to pass through, surrounding walls are arranged outside the four temperature control areas, backflow layers are formed between the surrounding walls and the temperature control areas and communicated with the backflow channel, and the air supply pipe is communicated with the air supply pipe. Conveying rollers are symmetrically arranged on the two sides of the middle of the temperature control area, and air supply pipes are symmetrically arranged on the upper portion and the lower portion in the temperature control area respectively; the inside of the case is divided into a plurality of temperature areas, and a drying mode that the temperature rises step by step is adopted, so that the paper quality is improved, and the production efficiency is ensured.

The invention belongs to the technical field of titanium alloy preparation, and particularly relates to a TC25 titanium alloy bar with high thermal stability and a preparation method and application thereof. The titanium alloy bar comprises the following components in percentage by weight: 6.4%-6.8% of Al, 1.5%-2.5% of Mo, 2.0%-3.0% of Zr, 1.5%-2.5% of Sn, 0.5%-1.5% of W, 0.20%-0.30% of Si, 0.060%-0.090% of O and the balance of Ti and inevitable impurities, wherein the total amount of impurity elements does not exceed 0.2%; by reducing the content of two alpha-phase stable elements of Al and O, the precipitation tendency of an alpha2 phase in the forging process can be reduced, and the plasticity and toughness of the material are improved; the content of O is reduced, so that the embrittlement effect of the near surface layer of the bar is avoided, and the thermal stability of parts is effectively improved; and the contents of Zr, Sn and other elements with low electron concentration are properly increased, and the room-temperature and high-temperature strength is ensured.

The invention belongs to the technical field of polyurethane, and particularly relates to silicon-zirconium synergistically modified polyurethane used as a wall and floor coating and a preparation method of the silicon-zirconium synergistically modified polyurethane. The silicon-zirconium synergetic modified polyurethane used as the wall and floor coating is prepared by mixing zirconium-silicon-containing polyurethane and amino polysilane, molecular main chains of the zirconium-silicon-containing polyurethane and the amino polysilane contain zirconium and silicon which are combined in a covalent bond mode, the intrinsic thermal stability of the polyurethane is improved, and meanwhile the compatibility of the zirconium-silicon-containing polyurethane and the amino polysilane can be improved through a similar structure. In the curing process of the silicon-zirconium synergetic modified polyurethane used as the wall and floor coating, an interpenetrating polymer network can be formed through hydrogen bonds, amino groups and a curing agent, and the flexibility of the polymer network is improved by optimizing the dosage of the curing agent, so that the thermal stability of the silicon-zirconium synergetic modified polyurethane used as the wall and floor coating is improved, and the service life of the silicon-zirconium synergetic modified polyurethane used as the wall and floor coating is prolonged. The problem of embrittlement of the coating caused by overhigh crosslinking density is avoided, and the toughness of the coating is ensured.

The invention discloses a super-tough Fe-P-C series amorphous magnetically soft alloy ribbon and a preparation method thereof, the Fe-P-C series amorphous magnetically soft alloy ribbon comprises the components of FexPyCz, x, y and z represent the atomic percent of each element and satisfy the following conditions: 82 < x < 85, 8 < y < 12, 5 < z < 7, and x + y + z = 100. The preparation method of the super-toughness Fe-P-C series amorphous soft magnetic alloy thin strip is simple, and the material is endowed with excellent soft magnetic performance and good plasticity and toughness. Specifically, the saturation flux density of the material is 1.60-1.68 T, the coercive force of the material is 4.0-8.0 A / m, and the initial magnetic conductivity of the material is 2600-10300. Under the conditions that the magnetic flux density is 0.5 T and the magnetization frequency is 50 Hz, the iron loss range of the Fe-P-C amorphous alloy ribbon sample is 0.358-1.525 W / kg. As an amorphous soft magnetic alloy with excellent comprehensive performance, the amorphous soft magnetic alloy is expected to replace traditional silicon steel sheets and other materials in the fields of electronics, electric power and the like, and has a wide application prospect.

The invention relates to a deposition container of an optical fiber preform, the deposition container comprises a body and a water cooling assembly, the body is provided with a first side wall and a second side wall which are opposite, and a high temperature area is arranged between the first side wall and the second side wall; the water cooling assembly comprises a circulating water tank, a water inlet pipe and a water drainage pipe, the circulating water tank is arranged in the high-temperature area, one end of the water inlet pipe penetrates through the first side wall and communicates with the circulating water tank, and one end of the water drainage pipe penetrates through the second side wall and communicates with the circulating water tank. By cooling the high-temperature area, the structure can be stable under severe use working conditions such as high temperature, cracking, deformation, bulging and embrittlement of the high-temperature area are prevented, and the service life is effectively prolonged. And in the deposition process, poor deposition caused by deterioration of the deposition container is reduced, so that the stability of product deposition in the OVD process is effectively improved.

The invention discloses a method for preparing a Ti-V-O titanium alloy part through a selective laser melting forming technology, and relates to the technical field of metal material preparation. The method aims at solving the problem that in the existing selective laser melting titanium alloy preparation process, the elongation is sensitive to oxygen elements. According to the method, micron TiO2 powder and spherical V powder are used and coated through a low-energy ball milling method, and then the coated powder is uniformly mixed with CP-Ti titanium alloy powder prepared through an argon atomization method to serve as a raw material for selective laser melting forming, so that the distribution uniformity of all elements in the powder is ensured. And melting and accumulating the powder layer by layer by virtue of selective laser melting equipment to finally obtain the selective laser melting titanium alloy block with excellent mechanical properties. The prepared selective laser melting titanium alloy does not need subsequent heat treatment, the elongation in the room-temperature mechanical property of the titanium alloy is improved along with the increase of the V content, and the common oxygen embrittlement problem of the titanium alloy is avoided. The method is used for preparing the titanium alloy.

The invention discloses a textile yarn constant-temperature humidifying and antistatic device, and relates to the field of textile industry, the textile yarn constant-temperature humidifying and antistatic device comprises a vehicle body, a heat exchanger is arranged on one side of the top of the vehicle body, a heat conduction fan is arranged on the other side of the top of the vehicle body, a base is arranged on one side of the vehicle body, and an auxiliary mechanism is arranged on the top of the base; according to the yarn constant-temperature humidifying and antistatic device for spinning, the heat exchanger, the heat conduction fan and a temperature sensor of the auxiliary mechanism are in linkage with a servo motor, the hot air introduction amount of a heat conduction notch is controlled by means of an air shielding plate, and the heat conduction notch is controlled by means of a temperature sensor of the auxiliary mechanism. The multi-stage fan blades are unfolded to retain hot air in the discharging barrel, accurate regulation and control over the temperature and humidity around a single batch of yarn are achieved, the problem of uneven temperature and humidity distribution of conventional equipment is solved, it is guaranteed that the water content of the yarn is stable, and embrittlement and breakage are avoided.