276results about How to "Convenient heat treatment" patented technology

The invention relates to an extraction method of direct coal liquefaction residues and application of extracts. The extraction method comprises the following steps: a) adding coal liquefaction residue powder and a first extraction solvent to a stirred tank to undergo primary extraction; b) carrying out solid-liquid separation on the extracted mixture obtained in the step a) and recovering the first extraction solvent from the obtained liquid in a solvent recovery unit and recycling the first extraction solvent; c) obtaining extracts after recovering the first solvent and mixing the extracts with a second extraction solvent to undergo secondary extraction; d) carrying out solid-liquid separation on the extracted mixture obtained in the step c), obtaining heavy liquefied oil after recovering the second extraction solvent from the obtained liquid in the solvent recovery unit and then carrying out moderate hydrogenation on the heavy liquefied oil and other recycled solvents in a coal liquefaction solvent hydrogenation unit and using the product as the recycled solvent in the coal liquefaction process; and e) carrying out heat treatment on the asphaltic substances obtained in the step d) by heating and carbonizing to obtain mesophase asphalt and oils.

The invention belongs to the technical field of precision determination, and relates to a method for determining the precision of a blind-hole method residual stress testing system. The method comprises the specific technologies of sample plate sampling, stress-relieving annealing, sample surface preparing and strain gauge adhering, data line connection, testing parameter configuring, hole drilling, data collecting, data processing, and precision determining. The method is advantaged in stable technology and accurate result. With the method, deviations of a testing system can be visually, rapidly, and quantitatively determined. Therefore, testing errors caused by influencing factors such as strain gauge quality, hole drilling eccentricity, and additional strain can be conveniently adjusted. Thus, the accuracy of the residual stress testing before and after hot rolled coil decoiling can be ensured.

The invention discloses a solar battery based on an inorganic bulk heterojunction and a preparation method thereof. The battery comprises a glass substrate, an FTO (fluorine-doped tin oxide) layer which is used as a positive electrode, a heterojunction composite film layer consisting of an Sb2S3 (stibnite) block and a TiO2 (titanium dioxide) nano-bar array, a polymer MEH-PPV electron barrier layer, a PEDOT: PSS hole transferring layer and an Au (gold) film layer as a battery negative electrode. The preparation method of the battery is simple, and the battery has a spectrum response range of 300 nm to 750 nm; and when an optical active layer of the battery stays at an illumination state, conversion efficiency of the battery can reach 5.58 percent.

The invention discloses a tin/copper foam alloy cathode material for lithium ion cells and a preparation method thereof. In the invention, foam copper serving as a substrate is coated and plated with tin/copper alternate multilayer lamination structure; and then the tin/copper alloy cathode material is obtained by heat treatment. A tin coating is formed directly on the foam copper strip substrate, and a copper coating is formed on the outmost layer; in the multilayer lamination structure, each coating is 0.1 to 1.0 micrometer thick, and the thicknesses of all coatings are the same; the thickness ratio of each tin coating to each copper coating is 1:1.7-1:2.1; and the heat treatment temperature is 150 to 400 DEG C and the heat treatment time is 0.5 to 6 hours. The tin/copper foam alloy cathode material prepared by the method has a high charge-discharge specific capacity and high cycle performance; and the maximum primary discharge specific capacity is up to 610mAh/g, and after 50 circles, the specific capacity reduces only by 1 to 3 percent. In the invention, the preparation process is simple, and large-scale industrial production can be performed.

The invention discloses a process for preparing nickel-base superalloy. The superalloy consists of the following components in percentage by weight: 22.5 to 24.5 percent of Cr, 7.0 to 8.0 percent of Co, 6.5 to 7.5 percent of W, 3.0 to 4.0 percent of Mo, 1.2 to 1.8 percent of Al, 1.5 to 2.5 percent of Ti, 2.0 to 3.0 percent of Nb, 1.0 to 2.0 percent of Mn, 2.0 to 4.0 percent of Fe, 0.02 to 0.08 percent of B, 0.5 to 1.5 percent of Ce, less than or equal to 0.1 percent of C, less than or equal to 0.2 percent of Si, less than or equal to 0.008 percent of P, less than or equal to 0.008 percent of S and the balance of Ni. The process for preparing the nickel-base superalloy comprises a smelting process and a heat treatment process, wherein the smelting process comprises the steps of: smelting master alloy by using a vacuum induction furnace, and performing directional solidification in a liquid metal directional furnace to prepare directional column crystal alloy, wherein the vacuum degree of the directional furnace is about (1-5)*10<-4>mmHg, the pouring temperature is 1,580 to 1,600 DEG C, the drawing speed is 4 to 8mm/min, the temperature gradient is 75 to 85 DEG C/cm, and the temperature of liquid tin is 250 to 350 DEG C; the heat treatment process comprises the following steps of: heating the column crystal alloy obtained through smelting to 1,240 to 1,260 DEG C, preserving heat for 3 to 5 hours, and performing air cooling to room temperature; heating to 1,150 to 1,170, preserving heat for 3 to 5 hours, and performing air cooling to room temperature; and heating to 930 to 950 again, preserving heat for 8 to 12 hours and performing air cooling to room temperature.

The invention belongs to the technical field of epoxy resin based chemical crosslinking material preparation, and particularly relates to a diamine addition crosslinking agent and a preparation method thereof, as well as a composition for preparing thermal reversible crosslinking epoxy resin and a composite material of the thermal reversible crosslinking epoxy resin. The structure of the diamine addition crosslinking agent is as shown in the formula (I), wherein R1 is methyl or H, and n is 1-3; and R is non-aromatic radical. The epoxy resin and the composite material prepared from the composition containing the crosslinking agent have all excellent performance of traditional chemical crosslinking epoxy resin at a low temperature, have re-processing forming performance of thermoplastic materials at a high temperature, restore crosslinking characteristics after being cooled, and are called 'thermosetting-thermoplastic' materials. The reversible crosslinking epoxy resin and the composite material thereof have a self-recovery capability, and the performance of the re-processing forming material can be regulated by means of thermal treatment, so that the diamine addition crosslinking agent is applicable to preparation of self-restoring paint, electronic packaging materials, thermal reversible adhesives and the like.

The present invention is one kind of re-compounded natural preservative preparation for preventing putrefying bacteria from generating in beef ham slices effectively. The re-compounded natural preservative preparation consists of Nisin and tea polyphenol in the weight ratio of 1 to 12.5-200. The present invention has expanded bacteriostasis spectrum and optimized effect, and may be used to replace available synthetic preservative.

The invention relates to a mixing stirrer with double feed inlets. The mixing stirrer comprises a left feed inlet, a right feed inlet, a control tank, a rotating mixing cylinder, a rotating shaft, a rotating motor, a rack, traveling wheels and a draw hook, wherein, the left feed inlet is arranged at the left side of the top end of the rotating mixing cylinder, the right feed inlet is arranged at the right side of the top end of the rotating mixing cylinder, the control tank is arranged in the middle of the top end of the rotating mixing cylinder, the bottom end of the rotating mixing cylinder is arranged on a rotating fixed tank which is connected with a rotating motor at the bottom end through the rotating shaft, the rotating motor is arranged on the rack, the traveling wheels are arranged at the bottom end of the rack, and the draw hook is arranged on the right side surface of the rack. The mixing stirrer is provided with double feed inlets, so that two different materials can be fed into the mixing stirrer simultaneously, and the mixing and stirring efficiency and mixing and stirring quality can be beneficially improved; and a crushing device is arranged inside one of the feed inlets, so that materials required for crushing can be crushed.

The invention relates to a semi-steel roll and a preparation method thereof, belonging to the technical field of steel rolling. The semi-steel roll contains the following chemical components according to the mass percent: 1.65-1.90 of C, 0.80-1.15 of Cr, 0.35-0.65 of Si, 0.60-1.00 of Mn, 0.30-0.60 of Mo, 0.20-0.80 of Ni, 0.05-0.10 of K, 0.05-0.10 of Na, 0.05-0.15 of Ti, 0.05-0.15 of Nb, 0.08-0.15 of Y, 0.03-0.08 of Mg, 0.02-0.04 of Zn, 0.06-1.00 of Al, less than 0.04 of P, less than 0.03 of S, and the balance of Fe. The semi-steel roll has reasonable chemical component, prolonged service life, the hardness of 55-58 HS and the tensile strength of 900-950 MPa and the impact toughness of 10-12 J/cm2; the invention can save the nickel resource, reduce the cost, simplify the heat treatment, shorten the production period, improve the heat treatment efficiency, save the energy, thin the solidified organization, improve the forms and the distribution uniformity of carbides and inhibit the aliquation of alloy elements;.

The invention discloses a device for cleaning oil stains on the surface of metal parts before heat treatment. External thread pipe, cross-shaped brush, air nozzle, cylinder body, liquid flow hole, arc block and rubber block. The design of the invention is reasonable, which is beneficial to the closed cleaning treatment of metal parts, avoids the falling of dust and impurities, facilitates re-cleaning and air-drying of metal parts, is suitable for oil cleaning of various metal parts of different specifications, and improves the cleaning effect. Reduce manual operation and facilitate subsequent heat treatment of metal parts. Oil cleaning of rotating metal parts is carried out through cross-shaped brushes with cleaning fluid, which is conducive to full utilization and saving of cleaning. The four arc blocks located on the same horizontal plane are beneficial to clamp the metal parts through the electric push rod.

The invention provides partially stabilised zirconia and alumina based electro-static dissipative or ESD ceramic compositions. The proposed ceramic compositions include specific amounts of dopants comprising one or more metal oxides selected from iron oxide, chromium oxide and titanium oxide. The proposed ESD ceramic materials are made into useful industrial products by injection moulding and sintering technology. A novel binder system may optionally be used to make injection mouldable feedstock. Useful products produced by the invention include, for example, ESD ceramic tweezers tips, ESD ceramic dispensing needles, ESD ceramic scissors and blades and ESD ceramic wire bonding capillaries which retain their ESD properties at relatively low temperatures, for example, service temperatures from 25 to 500° C.

The present invention is a vacuum heat treatment surface modification process, which includes the following steps: (1) casting the alloy first, then grinding the surface of the alloy, immersing the smooth polished alloy in a solvent for rinsing; (2) Put the alloy after rinsing into a chemical solvent tank to remove surface oil, and ultrasonically clean the alloy during the process of removing oil; (3) Send the cleaned alloy into a vacuum annealing furnace for the first heating, When the heating temperature reaches 600-650°C, keep it warm for 60-80min, then quickly cool to 300-350°C and then heat it for the second time; (4) Pre-oxidize the alloy sent out of the furnace, and then send the alloy into vacuum (5) Send the alloy into the quenching furnace to complete the quenching; (6) Send the quenched alloy into the tempering furnace, heat it to 200-230°C, and keep it warm for 1- Allow to cool naturally after 3 hours.

A carbon steel sheet having high formability due to a microscopic and uniform carbide distribution and having a good characteristic of final heat treatment, and a manufacturing method thereof. The carbon steel sheet having excellent formability, includes, in wt %, C at 0.2-0.5%, Mn at 0.1-1.2%, Si at less than or equal to 0.4%, Cr at less than or equal to 0.5%, Al at 0.01-0.1%, S at less than or equal to 0.012%, Ti at less than or equal to 0.5×48/14×[N]% when the condition of B(atomic %)/N(atomic %)>1 is satisfied or by 0.5×48/14×[N]% to 0.03% when the condition of B and N is not satisfied, B at 0.0005-0.0080%, N at less than or equal to 0.006%, Fe, and extra inevitable elements; an average size of carbide is less than or equal to 1 μm; and an average grain size of ferrite is less than or equal to 5 μm.

The invention discloses a copper oxide/graphene composite material, a preparation method thereof and an application of the composite material, and belongs to the technical field of composite materials and air purification. According to the preparation method, graphene oxide acquired by a modified Hummers method serves as a carrier, copper oxide is slowly precipitated on the graphene oxide from pre-prepared copper ammonia solution and combined with an oxygen-containing group on the graphene oxide to form a stable copper oxide/graphene oxide composite material, hydrothermal reaction of the copper oxide/graphene oxide composite material is performed, so that the graphene oxide is reduced into graphene, and the grapheme is filtered, washed, freeze-dried and calcined to prepare the copper oxide/graphene composite material. The preparation method has good application prospect and the advantages that price of raw materials is low, preparation process is simple, the composite material can be repeatedly used and the like. The copper oxide/graphene composite material is applied to removing of formaldehyde and can be repeatedly used after simple heat treatment of the composite material is performed at the temperature ranging from 100 DEG C to 150 DEG C.

The invention discloses a speed reduction electric motor, namely a novel electric motor integrating an epicyclic gear train and an electric motor. The novel electric motor comprises a stander, a stator, a rotor, an internal end cover, a planet carrier, an internal gear, a sun wheel, a big end cover, a supporting bearing, an output shaft, a planetary wheel axle and a planetary wheel. The invention arranges an epicyclic gear train reducer in the stander, uses the internal end cover to separate the epicyclic gear train from an electromagnetic starter and arranges the sun wheel of the epicyclic gear train on a rotor shaft, wherein the epicyclic gear train is a quasi-planet transmission or enclosed planet differential combined gear train. The beneficial effects of the electric motor include light weight, material saving, low cost, high efficiency, small shape, simple installation and other marked advantages.

The invention discloses a plastifying machine. The plastifying machine comprises a box body, a plastifying device arranged in the box body, and a heating device arranged on one side of the box body. Afeed port is formed in the top of the box body, receiving plates are arranged on the side wall of the box body, and a discharge pipe is arranged on the side wall of the box body. The plastifying device comprises a supporting rod arranged at the bottom of the box body, a lower millstone arranged on the supporting rod,, and an upper millstone cooperating with the lower millstone. First heating pipes are arranged on the upper millstone, and second heating pipes are arranged at the bottom of the lower millstone. The grinding effect of plastic is improved through the cooperative effect of grindingof the upper millstone and the lower millstone, through the cooperation of the heating pipes in the upper millstone and the lower millstone and the heating device on one side of the box body, the plastic in the box body is well heated, the plastifying efficiency of the plastic is improved, the time needed by plastifying is shortened, the production efficiency of the plastic is improved, and production and processing use in a factory is promoted.

The invention provides a new method for controllably preparing supported and non-supported Ni2P under mild conditions. In the method, two tube furnace reactors connected in series are adopted; and sodium hypophosphite aqueous solution is subjected to thermal decomposition in the first reactor to generate phosphine gas, and later, carried by argon, the phosphine gas is dried and then enters into the second reactor to react with nickel salt to generate the required Ni2P. The invention is characterized in that the preparation process is safe and concise; the preparation conditions are mild and controllable; simple thermal treatment under normal pressure is only needed in the preparation process; and the supported and non-supported Ni2P can be controllably prepared by controlling the amount of the sodium hypophosphite. With excellent catalytic performances, such type of phosphides can be widely applied to various hydrogenation reactions.

A suspension component for an automobile, such as a stabilizer bar, is provided and includes at least one localized portion having a strengthened outer surface. The localized portion is positioned at a location of highest stress along the suspension component. A method of forming the suspension component is also disclosed.

An Fe-based amorphous alloy of the present invention has a composition formula represented by Fe_{100-a-b-c-x-y-z-t}Ni_aSn_bCr_cP_xC_yB_zSi_t, and in the formula, 0 at %≦a≦10 at %, 0 at %≦b≦3 at %, 0 at %≦c≦6 at %, 6.8 at %≦x≦10.8 at %, 2.2 at %≦y≦9.8 at %, 0 at %≦z≦4.2 at %, and 0 at %≦t≦3.9 at % hold. Accordingly, an Fe-based amorphous alloy used for a powder core and/or a coil encapsulated powder core having a low glass transition temperature (Tg), a high conversion vitrification temperature (Tg/Tm), and excellent magnetization and corrosion resistance can be manufactured.

The invention discloses a protective atmosphere short-period roll bottom type continuous annealing furnace production line. The protective atmosphere short-period roll bottom type continuous annealingfurnace production line comprises a feeding table, a feeding vacuum chamber, a pre-heating chamber, a heating chamber, a thermostable chamber, a slow cooling chamber, a discharging vacuum chamber anda discharging table. The protective atmosphere short-period roll bottom type continuous annealing furnace production line is mainly suitable for spheroidizing annealing, softening annealing, full annealing, distressing, normalization, carbon restoration and other heat treatment processes of low-carbon steel, low alloy steel, bearing steel and other wires, discs, bars, steel pipes and forged casting. The protective atmosphere short-period roll bottom type continuous annealing furnace production line is automatically controlled through a computer and a PLC program, so that all equipment is closely connected, and continuity of feeding is achieved. Meanwhile, the whole device is good in sealing performance, low in energy consumption and high in safety. Intellectualization and automation of production are achieved, and production efficiency and product quality are improved.

The invention discloses an N-C-Cr-V-RE multi-element co-diffusion material for 45 steel surface strengthening. The co-diffusion material comprises the following two parts including a J-2 base salt material and a Cr-V-RE co-diffusion material, wherein the Cr-V-RE co-diffusion material is prepared from borax, NaF, K2CO3, V2O5, Cr2O3, aluminum powder and RE. After being subjected to 570 DEG C*4h N-C pre nitrocarburizing, 950 DEG C*6h Cr-V-RE co-diffusion and 550 DEG C*2h tempering, the diffusion layer structure of 45 steel is compact and continuous and high in corrosion resistance and hardness, and surface strengthening properties of corrosion resistance and abrasion resistance of plastic molds and various mechanical parts are guaranteed. The process is simple; the operation is convenient; the heat treatment period is short; the controllability is high; the property defects of unit diffusion metal or nonmetal are overcome; the application prospects are quite wide.

The present invention provides a manufacturing method of a cantilever beam fiber grating accelerometer. The sensor comprises a substrate, a spring leaf, a quality block, a side cover and a fiber grating. The substrate, the spring leaf and the quality block are assembled through mechanical coordination and laser welding to form a cantilever structure. The fiber grating performs etching on the G.657 fiber, the fiber tension performance is improved through adoption of macromolecule ultrathin coating, and the epoxy resin dispensing is employed to fix the positions between the fiber grating and substrate and the quality block to assemble a fiber grating acceleration sensor. A balance weight hole is processed on the quality block in advance, the assembled sensor is calibrated, and the dispensing or machining is performed on the balance weight hole to flexibly regulate the sensitivity and the resonant frequency point of the sensor to optimize the performance index of the acceleration sensor. The manufacturing method of the cantilever beam fiber grating accelerometer simplifies the design and processing requirement of the acceleration sensor, simple in operation method and high in practicality, and the made sensor is high in sensitivity, small in insertion loss and excellent in performace.