32results about How to "Performance deviation is small" patented technology

The invention discloses a modularized smokeless firework propellant which contains nitrocotton, a large quantity of tiny holes are arranged in the propellant and have block shape, and the size and shape of the holes are determined according to the caliber and shape of a firework transmitting barrel. The preparation method of the modularized smokeless firework propellant comprises the following steps: firstly mixing organic bond with granular pore firework powder, secondly preparing block-shaped solid by using the mixed materials through mould pressing, and then expelling volatilizing components in the block-shaped medicine by stoving. Compared with the granular pore firework powder, the modularized smokeless firework propellant can thoroughly solve the problem of propellant residue of granular propellant feeding, and simplifies the operation of transmitting propellant feeding, so that the stability and consistency of an end firework product are better; and in addition, the modularizedsmokeless firework propellant also avoids the mechanical friction action among granules, and improves the safety of manufacture, transmission, and storage of the firework products.

The invention discloses 1,000 MPa level hot-rolled TRIP steel based on the CSP process. The 1,000 MPa level hot-rolled TRIP steel comprises chemical elements and components including, by weight percent, 0.16%-0.20% of carbon, 1.60%-1.80% of silicon, 1.50%-1.60% of manganese, 0.20%-0.24% of vanadium, smaller than or equal to 0.008% of phosphorus, smaller than or equal to 0.005% of sulfur, 0.015%-0.060% of acid soluble aluminum, 0.015%-0.025% of nitrogen and the balance iron and inevitable impurities. The steel manufacturing method comprises converter smelting, refining, sheet billet continuouscasting, continuous casting blank uniform heating, high-pressure water descaling, controlled rolling, controlled cooling and coiling. Through the V-N adding microalloying component design, a ferrite phase and a bainite phase are strengthened, meanwhile, carbon concentration is not reduced, stability of retained austenite is maintained, and good strength and plasticity matching is achieved.

The invention relates to an interface agent for a high-speed railway ballastless track polyurethane caulking material and a preparation method thereof. The interface agent comprises the following raw materials in parts by weight: 100 parts of isocyanate prepolymers, 80-120 parts of solvents, 0.1-0.5 part of catalysts, 0.5-2.5 parts of water removal agents and 0.5-2.5 parts of anti-aging agents. The preparation method comprises the following two steps of: (1) slowly dripping polyhydric alcohol to isocyanate at the temperature of (85+ / -5) DEG C, then increasing the temperature to (90+ / -5) DEG C for continuous reaction, when the content of NCO groups is 14%-16%, adding organic silicon coupling agents, and reacting till the content of the NCO groups is 10%-12% so as to obtain a prepolymer; (2) adding the solvents, the catalysts, the water removal agents and the anti-aging agents to the prepolymer, uniformly stirring, and debubbling in vacuum (at vacuum degree less than or equal to -0.09MPa) to obtain the interface agent for the polyurethane caulking material. The interface agent disclosed by the invention has the characteristics of low viscosity, good impregnation property, high toughness, excellent hydrolysis-resistant property and alkali-resistant property, excellent adhesive property with concrete and the polyurethane caulking material, and the like.

The invention belongs to the technical field of radars, and discloses a pulse segment coding method for eliminating radar target blind speed, which comprises the following steps: determining a slow time linear phase phi m (k) and a corresponding transmitting signal sm (t); segmenting the pulse, and adding a random phase or a fixed phase to each segment of pulse to obtain a slow-time linear phase phi'm (k) after the phase is added and a corresponding transmitting signal s'm (t); enabling s'm (t) to reach the nth receiving array element after target scattering to obtain an echo signal smn (t); superposing the echo signals to obtain an output signal Sn (t) of the nth receiving array element; performing down-conversion and matched filtering on the Sn (t) to obtain echo signals Xn, i (t) aftermatched filtering and a fuzzy function of a corresponding DDMA radar; performing FFT on the Xn, i (t) to obtain a frequency domain signal znk ', i, and performing clutter suppression by adopting a space-time adaptive processing method; according to the method, the Doppler ambiguity problem of the DDMA MIMO radar can be solved, the target blind speed is eliminated, the mode of accurately controlling the phase is expanded, the performance deviation caused by random phase contingency is weakened, and the minimum detectable speed is better.

The invention discloses CSP-procedure-based 600 MPa-grade hot-rolled TRIP steel. The CSP-procedure-based 600 MPa-grade hot-rolled TRIP steel comprises the chemical element ingredients of, in percentage by weight, 0.14-0.16% of carbon, 0.90-1.20% of silicon, 1.20-1.40% of manganese, 0.07-0.10% of phosphorus, less than or equal to 0.005% of sulphur, 0.015-0.060% of acid soluble aluminium and the balance ferrum and inevitable impurities. The fabrication method of the CSP-procedure-based 600 MPa-grade hot-rolled TRIP steel comprises the following steps of converter smelting, refined smelting, thin plate billet continuous casting, continuous-casting billet soaking, high-pressure water descaling, controlled rolling, controlled cooling and rolling up. The economic C-Si-Mn-P ingredient design is adopted, a metallographic structure is composed of 50-65% of ferrite, 25-40% of bainite and 5-20% of residual austenite; the yield strength is 390-450 MPa, the strength of extension is 600-680 MPa, and the elongation A80 is 28-35%; and the CSP-procedure-based 600 MPa-grade hot-rolled TRIP steel has good high-plasticity matching.

The invention provides vacuum evaporation equipment for inorganic material, which comprises a vacuum evaporation chamber and an automatic control system. In the vacuum evaporation equipment provided by the invention, each module collects various parameter signals in the vacuum evaporation chamber and sends various parameter signals to a main control machine; the main control machine processes the various received parameter signals according to various preset parameters to obtain feedback signals and feeds back the feedback signals to corresponding control modules; the corresponding control modules carry out automatic regulation and control on corresponding parts according to the corresponding feedback signals so as to achieve automatic control on inorganic material vacuum coating. The vacuum evaporation equipment for the inorganic material not only saves a great quantity of labor, but also, more importantly, can achieve effective monitoring on the inorganic material vacuum evaporation process and achieves improvement on the inorganic material vacuum evaporation accuracy and quality, and speed increasing.

The invention provides vacuum evaporation equipment for an organic material. The vacuum evaporation equipment comprises a vacuum evaporation chamber and an automatic control system. In the vacuum evaporation equipment, all modules collect all parameter signals in the vacuum evaporation chamber and transmit the parameter signals to a chief controller, according to the preset parameters, the chief controller processes the received parameter signals so as to obtain feedback signals, the feedback signals are fed back to corresponding control modules, and the corresponding control modules automatically regulate and control corresponding parts according to corresponding feedback signals, so that organic material vacuum coating is automatically controlled, a large amount of manpower is saved, the vacuum evaporation process for the organic material can be monitored effectively, and the accuracy, quality and speed of vacuum evaporation for the organic material are improved.

The invention relates to a multi-stage rotor pump and the manufacturing process thereof. The multi-stage rotor pump is provided with a rotor shaft in the housing equipped with a plurality of rotor chamber, a multi-stage rotor is fixedly disposed on the rotor shaft. In order to produce the multi-stage rotor pump simply and with low cost, a hollow cylinder body with cross sections in the same shape is formed. When the cylinder is formed, radiating ribs extending along the longitudinal axis direction are formed on the outer circumferential surface of the cylinder simultaneously, the cross section interposing with the longitudinal axis cuts the cylinder which is used as a plurality of rotor housing. Rotor shafts are configured inside the plurality of rotor housing, and a multi-stage rotor is fixedly disposed on the rotor shafts inside each rotor housing. Because the separation board opened with rotor shaft through holes covers the inlet side and the outlet side of the rotor housing, a fluid path communicating the outlets of the front and the rear rotor housing with the inlet is formed on the separation wall.

Provided is a simply structured multiprocessor system which equally distributes access performance for accessing a shared memory among plural master units accessing the shared memory. The multiprocessor system includes plural master units PU 0 and PU 1 each of which issues an access request for accessing the shared memory, a bus IF unit 4 - 10 which accesses a bus by a split transaction scheme and separately executes a request phase for accepting the access request; and a transfer phase for executing data transfer in response to the accepted access request. In the case where one of the master units consecutively issues plural access requests without an interval of a predetermined time period, the bus IF unit 4 - 10 restricts the number of consecutive transfer phase executions corresponding to the plural access requests to be not more than N. The bus control method and the semiconductor are also provided.

The present invention provides a resin composition for a golf ball cover, wherein, since the resin composition for the golf ball cover according to the present invention minimizes changes in physical properties due to temperature changes and improves restitution characteristics, the resin composition for the golf ball cover may reduce performance deviations of a golf ball due to seasonal temperature changes and may improve a spin rate of the golf ball.

The invention discloses a color-stabilizing protective glaze, a ceramic tile and a preparation method of the color-stabilizing protective glaze, and the color-stabilizing protective glaze is prepared from the following raw materials in parts by weight: 15-24 parts of calcined soil, 8-17 parts of wollastonite, 10-35 parts of high-temperature frit, 20-30 parts of matte transparent frit and 10-30 parts of low-temperature transparent frit. The matting temperature of the protective glaze is adjusted by adding the calcined soil, the firing temperature is reduced and the firing time is shortened by adding the wollastonite, and meanwhile, the high-temperature frit, the matte transparent frit and the low-temperature transparent frit are introduced in a high proportion, so that the melting firing temperature of the glaze is expanded, the effect deviation of the glaze under different firing systems is small, and the service life of the glaze is prolonged. And the color development stability of the ink-jet ink under different conditions is ensured. The color-stabilizing protective glaze provided by the invention not only can play a role in protecting a decorative pattern layer and prolonging the service life, but also can stabilize the natural color of decorative ink, and the color of a decorative pattern is not influenced by the change of using process parameters, so that the color-stabilizing protective glaze is beneficial to repeated production on line.

Cover glass (10) for solid image pickup device comprising a flat glass plate made of an inorganic oxide glass and, superimposed on the front and back, viewed in the direction of plate thickness, thereof, first translucent plane (11a) and second translucent plane (11b), wherein the first translucent plane (11a) is provided with thin film (20), and wherein an unevenness is provided at extreme edge (22) of the thin film (20) positioned at an outer edge on the first translucent plane (11a) of the flat glass plate, the unevenness having projection dimension (L) ranging from 0.5 to 50 m, the projection dimension (L) defined as extending from, on a plane parallel to the first translucent plane (11a), the most recessed position to the most protrudent position. Such a cover glass is produced through a process comprising the steps of melting a glass raw material mixture in a heat resistant vessel, molding the thus molten glass into a plate glass, providing the plate glass with a thin film and fracturing the plate glass with the thin film into small glass pieces.

The invention discloses a preparation method and application of an improved tin-based perovskite thin film. The preparation method comprises the following steps: preparing a hole transport layer on cleaned conductive glass; preparing a precursor solution containing a cyclic thioketone compound and a tin-based perovskite material; spin-coating the precursor solution, generating a perovskite thin film in one step by using an anti-solvent, and carrying out annealing to obtain the tin-based perovskite thin film. The cyclic thioketone compound is introduced into the coating precursor solution and can effectively coordinate with tin ions, so that the crystallization rate of a tin-based perovskite material is greatly slowed down, and the smooth and compact tin-based perovskite thin film with passivated surface defects is obtained; according to the tin-based perovskite solar cell prepared from the thin film, the photoelectric conversion performance, the stability and the process repeatability of the tin-based perovskite solar cell are remarkably improved, and the maximum photoelectric conversion efficiency exceeds 12%.

A water-absorbent sheet comprising a structure in which an absorbent layer containing a water-absorbent resin and an adhesive is sandwiched with a hydrophilic nonwoven fabric, wherein the water-absorbent sheet has a structure in which the absorbent layer is fractionated into a primary absorbent layer and a secondary absorbent layer with a substrate layer formed by laminating two or more layers of a substrate having breathability adhered together with an adhesive, wherein the substrate layer satisfies the following requirements (1) and (2): (1) the substrate layer having a basis weight of 25 g / m 2 or more; and (2) the substrates having breathability being adhered therebetween with an adhesive in an amount of from 0.1 to 50 g / m 2 . The water-absorbent sheet of the present invention exhibits some excellent effects that the water-absorbent sheet is capable of accomplishing thinning and avoidance of gel blocking phenomenon and liquid leakage, while obtaining basic properties as a water-absorbent sheet at a high level, even for a water-absorbent sheet containing a very small amount of pulps.

The invention relates to an interface agent for a high-speed railway ballastless track polyurethane caulking material and a preparation method thereof. The interface agent comprises the following raw materials in parts by weight: 100 parts of isocyanate prepolymers, 80-120 parts of solvents, 0.1-0.5 part of catalysts, 0.5-2.5 parts of water removal agents and 0.5-2.5 parts of anti-aging agents. The preparation method comprises the following two steps of: (1) slowly dripping polyhydric alcohol to isocyanate at the temperature of (85+ / -5) DEG C, then increasing the temperature to (90+ / -5) DEG C for continuous reaction, when the content of NCO groups is 14%-16%, adding organic silicon coupling agents, and reacting till the content of the NCO groups is 10%-12% so as to obtain a prepolymer; (2) adding the solvents, the catalysts, the water removal agents and the anti-aging agents to the prepolymer, uniformly stirring, and debubbling in vacuum (at vacuum degree less than or equal to -0.09MPa) to obtain the interface agent for the polyurethane caulking material. The interface agent disclosed by the invention has the characteristics of low viscosity, good impregnation property, high toughness, excellent hydrolysis-resistant property and alkali-resistant property, excellent adhesive property with concrete and the polyurethane caulking material, and the like.