31results about How to "Stable heating rate" patented technology

The invention provides a method for preparing an electrode of ZIF-derived CoMoO4. the method is characterized in that the method uses a high temperature calcined ZIF-67 as a precursor to prepare CoMoO4 by hydrothermal method., that steps are as follow: (1) molybdate and a compound containing a Co salt are taken and stirred in deionized water until the molybdate and the compound contain the Co saltare dissolved; (2) a small amount of ZIF-67 power are added, stirred to a homogeneou solution; 3, that mixture is transferred to a reaction kettle, and the mixture is cooled to room temperature afterreaction for 2h; (4) alternately cleaning and drying are performed for 24h; (5) Ultrasonic cleaning is performed for 30 min, deionized water cleaning and ultrasonic are performed, drying is performedfor 12 h; 6) that graphite paper is dried at constant temperature, the required material is ground in a mortar, a small amount of solvent is added, uniformly dropping on the dried sheet layer, and then drying is performed, and 7) a regular-shaped electrode of ZIF-derived CoMoO4 is performed. The invention overcomes the problems of poor stability and small specific capacitance of metal oxide electrode in the prior art, and provides a preparation method of CoMoO4 derived from metal oxide electrode material ZIF with high specific capacity and good stability.

The invention provides a rapid annealing method for ohmic contact of metal and silicon carbide, which comprises the steps of (1) placing SiC wafers on a Si sheet tray, then arranging the Si sheet tray on a rapid thermal treatment device, and simultaneously filling the device with protection gas Ar; (2) performing a first temperature-rise period, and keeping the temperature; (3) performing a second temperature-rise period, and steadying the temperature; (4) performing a third temperature-rise period; (5) performing a fourth temperature-rise period, namely, annealing period; and (6) performing a temperature reducing period. The method has benefits as follows: the method is carried out in the commercial rapid thermal treatment device taking any light radiation as a heat source; and the silicon sheet used as the tray can adopt various standards of commercial polishing monocrystalline silicon sheets and has low cost. The annealing method can remove the moisture on the surface of the silicon carbide wafer and stabilize the temperature. On the premise of ensuring the control precision of the peak thermal treatment temperature, the heating rate is improved through changing the setting value. Finally, the annealed ohmic contact resistance is reduced; and the quality of the ohmic contact, the device reliability and the yield are improved.

The invention belongs to the steel technical field, and specifically, relates to a vanadium-nitrogen microalloyed high-strength phase-transformation induced plastic steel seamless pipe and a preparation method thereof. The vanadium-nitrogen microalloyed high-strength phase-transformation induced plastic steel seamless pipe comprises the chemical ingredients by the weight percentage: 0.18%-0.24% of C, 1.0%-1.6% of Si, 1.2%-1.6% of Mn, 0.17%-0.22% of V, 0.01%-0.03% of N, not more than 0.06% of P, not more than 0.005% of S, and the balance iron and unavoidable impurities. With utilization of an intermediate-frequency induction heat treatment device of a thin-wall steel pipe and with supplementary of a vanadium-nitrogen microalloyed component design, the advantage of cooperation of good strength and elongation of phase-transformation induced plastic steel is successfully applied to the steel pipe production field, a fact of replacing solid components with hollow components is effectively realized so as to achieve automobile light weighting, besides, further development of an internal high pressure forming technology is promoted, not only are the internal high pressure formed components with high strength, large deformation and complex shape produced, but also the production cost is greatly reduced, and the preparation method has wide application prospects are provided.

The invention discloses a high-strength plastic vanadium microalloyed dual-phase steel seamless pipe and an on-line preparation method thereof. The seamless pipe is composed of the following chemical components in percentage by mass: 0.10-0.18% of C, 0.1-0.6% of Si, 1.1-1.6% of Mn, 0.16-0.20% of V, 0.01-0.03% of N, at most 0.006% of P, at most 0.005% of S, and the balance of Fe and other inevitable impurities. The intermediate-frequency induction heat treatment device of the thin-wall steel pipe is utilized and assisted by the vanadium microalloyed component design to produce the dual-phase steel seamless pipe with favorable comprehensive mechanical properties; the advantages of low yield-tensile ratio, high rate of work hardening, favorable strength and favorable elongation percentage of the dual-phase steel are matched and successfully applied to the field of production of steel pipes to efficiently substitute solid components with hollow components, thereby implementing light weight of the automobile; and meanwhile, the seamless pipe promotes further development of the internal high-pressure forming technique, and has wide application prospects.

The invention relates to a sintered brick, in particular to a sintered brick made of iron ore slag and a preparation technology of the sintered brick. The sintering raw material of the iron ore slag sintered brick comprises the components by bone dry weight as follows: 28 to 36 portions of iron ore slag, 27.6 to 41.4 portions of coal gangue or 25.5 to 38.25 portions of coal slag, 20 to 30 portions of silt and 5 to 15 portions of clinker. The iron ore slag sintered brick provided by the invention has the advantages that the source of raw materials is ample, waste iron ore slag is recycled, soil resources are saved, cultivated lands are protected, waste iron ore slag that can be obtained on a large scale and is of great quantity is fully utilized, the waste is changed into valuable, and theenvironment is purified. The obtained iron ore slag sintered brick has the effects of heat preservation, thermal insulation shock resistance and pressure resistance; and peeling and distortion are avoided, breakage or explosion does not occur easily, the yield can reach over 99%, and the sintered brick is suitable for industrial production and can be widely used as wall bricks of buildings.

The invention relates to a multifunctional device used for plating layer research, belonging to the technical field of material annealing. An infrared radiation furnace (2) which can be used in normal pressure and vacuum is arranged below a driving system (1); an electromagnetic induction heating furnace (3) is arranged below the infrared radiation furnace (2); a set of high temperature resistant high vacuum isolation room (4) is arranged below the electromagnetic induction heating furnace (3); an air knife (5) is arranged below the high temperature resistant high vacuum isolation room (4); a sample clamping mechanism (6) is arranged below the air knife; and a hot-dipping metallic plating melting furnace (7) and a corresponding hydraulic transmission and sealing system (8) are arranged below the sample clamping mechanism (6). A continuous annealing furnace heated by low-inertia infrared radiation can realize a continuous annealing curve simulating industrial production, reduce the thermal inertia of the sample, control the temperature precision of the sample within 1 DEG C, and control a soaking zone of the sample within 100*150mm; meanwhile the test process is clean and does not have any pollution of noise, light and electricity.

The embodiment of the invention provides a pressure welding device and a pressure welding method. The pressure welding device comprises a pressing mechanism and an induction heating mechanism, whereinthe pressing mechanism is used for pressing a display panel, an electrical component and a conductive adhesive film located between the display panel and the electrical component; and the induction heating mechanism is matched with the conductive adhesive film and used for generating an alternating magnetic field, so that the conductive adhesive film is self-heated and cured, and the display panel is fixedly connected with the electrical component. The alternating magnetic field is generated through the induction heating mechanism, so that a ferromagnetic material in the conductive adhesive film is enabled to generate heat to complete curing of an adhesive material in the conductive adhesive film. Compared with the prior art, through self-heating of the conductive adhesive film, the heating rate is more stable, the display panel and electrical components such as an IC and an FPC are heated more uniformly, and damage of a high-temperature pressure head to the display panel and the electrical components such as the IC and the FPC is avoided. Meanwhile, due to the fact that a hardware heat source is omitted, potential safety hazards brought by the high-temperature pressure head in the production process are avoided.

The invention relates to a firewood and carbon co-firing kiln. The firewood and carbon co-firing kiln comprises a firewood kiln body, a dispersion machine and a slurry pump, an inlet of the firewood kiln body is located at the left end of the firewood kiln body, the dispersion machine is connected with the slurry pump, a hose of the slurry pump is connected with the firewood kiln body through a dispersion device, the dispersion device comprises a shell, a dispersion assembly, a protection assembly and an adjusting assembly, the dispersion assembly is arranged inside the shell and comprises a rotating sleeve, dispersion blades and a material injection pipe, two protection assemblies are arranged between the shell and the dispersion assembly, each protection assembly comprises a movable cover, a control column and a connecting ring, the adjusting assembly comprises an air cylinder and a control panel, a rectangular feeding hole penetrating through a roof of the firewood kiln body to communicate with the interior of the firewood kiln body is formed in the left portion of the upper surface of the firewood kiln body, and the dispersion blades, located below the rotating sleeve, of the above multiple dispersion blades stretch into the feeding hole.

The invention relates to a method for providing a heated hydraulic fluid for a hydraulic component test. A hydraulic pipeline connected with a hydraulic component and a hydraulic oil tank are involved, a liquid heating device is involved, the body of the liquid heating device is an aluminum ingot, electric heating pipes are arranged in the aluminum ingot, a curved liquid passage is also formed inthe aluminum ingot, and a first temperature sensor is arranged on the surface of the aluminum ingot body of the liquid heating device; the liquid heating device is circularly communicated with the hydraulic component and the hydraulic oil tank through the hydraulic pipeline, the hydraulic pipeline between the liquid heating device and the hydraulic component is divided into a first branch and a second branch through a reversing valve, the first branch passes through the hydraulic component and then enters the hydraulic oil tank, and the second branch is directly communicated with the hydraulicoil tank. A second temperature sensor is disposed between the liquid heating device and the reversing valve.

The invention relates to a motor pulse current control method and device and an electric automobile, and the method comprises the steps: determining a current intermediate parameter based on a received pulse heating current request value of a power battery and an obtained current internal resistance of the power battery when it is determined that the power battery has a pulse heating demand, determining a current coefficient based on the obtained current terminal voltage of the power battery; determining a to-be-output shaft current of the motor based on the current intermediate parameter and the current coefficient; and controlling a motor to output according to the to-be-output shaft current.