30results about How to "Avoid technical risks" patented technology

The invention belongs to the field of titanium-based alloys, and particularly relates to a novel heat-resisting titanium alloy and a processing and manufacturing method and application thereof. The processing and manufacturing method comprises the composition elements of alloy components, smelting, heat processing, heat treatment and the like, wherein the alloy components are as follows (in percentage by weight): 5.4%-6.3% of Al, 3.0%-5.0% of Sn, 2.5%-6.4% of Zr, 0.0%-0.96% of Mo, 0.25%-0.5% of Si, 0.2%-0.5% of Nb, 0.3%-3.4% of Ta, 0.2%-1.6% of W, 0.0%-0.07% of C, less than or equal to 0.17% of O, less than or equal to 0.03% of Fe and the balance of Ti and inevitable impurity elements. The novel heat-resisting titanium alloy disclosed by the invention can obtain different matching of tensile strength, plasticity, permanence, creep strength and heat stability through the combination of different heat processing process and heat treatment processes, can be used for manufacturing parts, namely blades, coil assemblies and the like which are positioned on the high-temperature parts of an advanced aircraft engine, is used for a long time within a range of 600-650 DEG C, can also be used for manufacturing high temperature-resistant structural members, namely aerospace craft skin and the like, is used for a short time at about 700 DEG C and can be used as a material and the like used for high temperature-resistant corrosion-resistant valves of an automobile and a boiler.

The invention relates to a system and method for expanding the model driving development capability by applying a plug-in. In the system and the method, a'model and plug-in' combined mode is provided to describe and establish a software system, firstly a model designing tool is used for establishing basic model description of the software system and then establishing a plurality of reusable plug-pin model for further describing a basic model object, the plug-in model can be expanded randomly on various basic model objects, and the plug-in can complete a software function with any complexity, therefore, the expansion of the model driving development capability is realized. By utilizing the invention, the technical problems of the existing model driving development method that because a fixed model is adopted, the describing capability of complex service system is poor, and the software system with the model driving development can not be established, expanded and maintained visually and dynamically under the operating state and the like are solved. The system developed by using the method has the advantages that the development complexity degree is low, the development speed is fast, the reusable degree of technology is high, the expansion is flexible, the maintenance is convenient and the reliability is high.

The invention belongs to the field of titanium-base alloys and particularly relates to a preparation method of a high-temperature titanium alloy bar. The preparation method comprises the following steps: heating a prepared Ti60 titanium alloy cast ingot to 1150-1200 DEG C, and carrying out blank-opening forging in a beta phase region by virtue of a rapid forging machine or a hydraulic press; heating to 1080-1150 DEG C, carrying out repeated upsetting and swaging forging by virtue of the rapid forging machine or the hydraulic press, heating the forged blank to Tbeta-120 DEG C to Tbeta-30 DEG C(Tbeta is a Ti60 titanium alloy alpha+beta/beta phase inversion temperature), and carrying out repeated upsetting and swaging forging by virtue of the rapid forging machine or the hydraulic press until the blank is in a required size, so as to obtain the titanium alloy bar, wherein the macrostructure of the titanium alloy bar is a fuzzy crystal, and the microstructure of the titanium alloy bar isuniform. After the prepared Ti60 titanium alloy bar is subjected to solid dissolving and ageing thermal treatment, the matching degree of the obdurability of the bar is relatively good, and the matching degrees of the durability, creeping strength and thermal stability are relatively good. The preparation method is convenient in operation and relatively strong in process controllability, and the batch stability of the prepared Ti60 titanium alloy bars is good.

The invention relates to a preparation method of para-aramid and graphene oxide/graphene composite paper and belongs to the technical field of high molecular materials. The preparation method includes: utilizing a polymerization one-step process without a surfactant added to prepare para-aramid nanofiber water dispersion liquid, utilizing the characteristic that para aramid nanofiber and grapheneoxide have high dispersity in water to well mix two dispersion liquids proportionally, and utilizing a conventional papermaking method to prepare the para-aramid/graphene oxide composite paper; utilizing a wet process or a dry process to reduce graphene oxide to obtain the para-aramid/graphene composite paper. Compared with the prior art, the preparation method has the advantages that the para-aramid and graphene/graphene oxide composite paper can be produced continuously on a large scale, the obtained composite paper has excellent performance, and the preparation method is friendly in corresponding production environment, low in cost and simple in process..

The invention discloses a para-position nanometer aramid fiber and carbon nano-tube composite paper preparation method, which comprises: obtaining a para-aramid fiber (short for ANF) aqueous dispersion liquid, obtaining a carbon nano-tube (short for CNT) aqueous dispersion liquid, and mixing the two aqueous dispersion liquids to prepare the para-aramid fiber/carbon nano-tube (ANF/CNT) composite paper. According to the method of the invention, carbon nano-tubes are adopted, the advantages of high conductivity and high radiation of the carbon nano-tubes are utilized, and a specific dispersing agent capable of opening the agglomeration among the carbon nano-tubes is added, so that the carbon nano-tubes are uniformly dispersed, and then the carbon nano-tubes are mixed with a para-aramid fiberaqueous dispersion liquid to prepare the nanometer para-aramid/carbon nano-tube composite paper; and by adding the specific dispersing agent, the carbon nano-tubes can be uniformly dispersed, so thatthe conductivity of the nanometer para-aramid/carbon nano-tube composite paper can be greatly improved while the infrared emissivity is more than 90%.

The invention provides a numerical simulation method of atomized film formation of suspension liquid material, and obtains the relationships among thickness of liquid film and each parameter through dimensional analysis and the linear least square regression analysis method. The liquid jet continuously impacts on an atomizing disk, and the liquid jet expands on the surface of the atomizing disk toform a film; and the liquid film leaves the atomizing disk along the tangent direction and breaks up to form ligaments or droplets. The computational fluid dynamics software FLUENT is used to performnumerical calculation on the process, therefore, the high cost and waste of raw materials caused by experiment or blind design are avoided, which has certain guiding significance for the atomizationmechanism of feed liquid.

One embodiment of the invention relates to a charging method, a charging pile, a user terminal and a server. The charging method comprises following steps: generating automatic card-swipe unique identification and binding to an automatic card-swipe mechanism, wherein the automatic card-swipe mechanisms and charging piles are corresponding one for one and bond; obtaining the identified automatic card-swipe unique identification, wherein the automatic card-swipe unique identification is identified and sent by a user terminal; generating and sending a card-swipe control instruction according to the automatic card-swipe unique identification; the automatic card-swipe mechanism performs card-swipe operation according to the card-swipe control instruction; the charging pile starts operation according to the card-swipe operation results. According to the embodiment of the invention, sharing by multiple people can be realized by the automatic card-swipe mechanism so as to avoid technical risk due to inner structure change; data of original charging piles will not be affected, which is convenient for refitting and sharing and therefore further increases the utilization rate of idle charging piles.

The invention discloses a flow and heat transfer process numerical simulation method of a hot air drum type phoenix single fir tea leaf fixation machine, and uses the hot air drum type phoenix singlefir tea leaf fixation machine which is scientific and reasonable in structure, good in fixation effect, high in efficiency, low in cost and easy to realize. According to the numerical simulation analysis method for the flow and heat transfer process in the fixation machine, calculation fluid dynamics software FLUENT is adopted for carrying out numerical calculation on the dehydration process of tea leaves in the drum-type fixation machine and the accompanying heat exchange and mass transfer process between the tea leaves and hot fluid, high cost and raw material waste caused by experiments orblind design are avoided, and the method has certain guiding significance for improving the fixation quality of the tea. High cost and technical risks caused by tests or blind design are avoided to acertain extent; programs of the numerical simulation analysis process are easy to implement, and the method has remarkable value in application of the efficient tea leaf fixation process.

The invention discloses a preparation method of a power type lithium thionyl chloride battery positive electrode. The method comprises the following steps of 1) mixing materials, 2) putting on a net,3) carrying out fibration treatment, 4) carrying out staggered stretching on fibers and 5) cutting and white space leaving. In the fiber staggered stretching step, a pair of pressing blocks or pressing rollers of which the surfaces are provided with symmetrical fine raised grains are used for pressing or rolling the two surfaces of the positive electrode nickel pull net for multiple times in different directions and at different positions, so that the positive electrode nickel pull net is filled with an adhesive in a material to form integral fiber chain network adhesion; and then rolling andleveling of the positive electrode nickel pull net by using a smooth pressing roller are carried out. Secondary adhesion is not needed, the problems of powder falling, falling, flanging and the like of the positive electrode can be solved, and meanwhile, the capacity and the discharge voltage platform of the battery are also improved.