57results about How to "Process control stability" patented technology

The present invention discloses one kind of continuous long fiber reinforced fire-retardant thermoplastic resin and its preparation process. It is prepared through mixing continuous long fiber reinforced thermoplastic resin agglomerate, which has reinforcing fiber content of 30-80 wt% and agglomerate length of 3-30 mm, and fire-retardant agglomerate, which has thermoplastic resin as carrier, fire retardant in 20-60 wt%, fire-retarding synergist 5-20 wt% and other additive 0-5 wt%. The continuous long fiber reinforced fire-retardant thermoplastic resin has continuous long fiber content of 5-60 wt%. The continuous long fiber reinforced fire-retardant thermoplastic resin has excellent mechanical performance, especially impact resistance, and excellent fire-retarding performance.

The invention relates to a manufacturing method for continuous direct spinning fine denier yarn by uhmwpe jelly method, belonging to the spinning area and solving the problem that the single yarn or yarn beam generated by prior technology is on the high side and bad uniformity so that the difficulty for stability of manufacturing and quality of subsequent product is enhanced and the applicable range is limited. The method is provided with reasonable and compact process flow, stable process control, skillful operation and improving the quality and uniformity of product. By the method continuous stable spinning in line is realized in process parameters and the production efficiency is improved. The labor cost and intensity are lessened. Because there is less turnover link in the middle of process it is favor of decreasing producing consumption and uncontrollable factors. Under the stable running, uhmwpe fine denier yarn or yarn beam with even and stable quality, and good performance is provided.

The invention discloses a multi-channel data collection control circuit and method for a satellite. The multi-channel data collection control circuit comprises multi-channel electronic switches, a voltage collection chip and an FPGA control module, and the FPGA control module is used for achieving switching of channels of the multi-channel electronic switches, control over the voltage collection time sequence work, data smoothing operation and the data storage and reading function. The hardware circuit formed by the FPGA control module, the multi-channel electronic switches and the voltage collection chip is used for replacing the complex software function, the collection function and the data processing and storage function can get rid of control of a processor, the resources of a CPU are effectively released, collection time is saved, and process control is more stable. An independent system for achieving collection modularization and control process intellectualization is achieved, and the far-reaching significance in satellite-borne integration of a satellite system is achieved.

The invention relates to a cleaning and wool making technology for a monocrystal silicon chip, and belongs to the technical field of chemical engineering. The technology particularly comprises the following step: (1) adopting a self-made silicon chip cleaning agent to perform precleaning on the silicon chip; (2) putting the pre-cleaned silicon chip into a wool making trough; preparing a wool making liquid in the wool making trough, and adding 0.1 to 5% of sodium hydroxide, 0.1 to 3% of potassium hydroxide, 1 to 5% of isopropyl alcohol and 0.02 to 5% of a self-made wool making additive in percentage by weight into the wool making liquid; rising temperature until the reaction temperature is 70 DEG C to 90 DEG C to make wool; turning on ultrasonic equipment during the wool making process; (3) when the wool is prepared, closing the trough body; before the chip is cast, stirring by adopting a stirring device, wherein the wool making reaction time is 15 to 40 min. According to the invention, through the adoption of the cleaning agent and the wool making additive, the technology is controlled to be simple and stable, the energy consumption is reduced, and the capability of process control is enhanced, so that the control quality of the product in various aspects is greatly improved, the production cost in various aspects is reduced, and the comprehensive economic benefit is increased.

The present invention relates to a liquid-phase catalytic oxidation method gas sweetening regeneration process and its equipment, belonging to the field of sweetening technology. It is characterized by that said invention adopts a new-type low-pressure double-jet regenerator. Its rich mother liquor working pressure difference is low pressure (0.03-0.08 MPa), the desulfurizing tower and reaction tank are combined into one body, and its rich mother liquor outlet is set in the upper portion of said reaction tank, and the desulfurizing tower, reaction tank, low-pressure double-jet regenerator and regeneration tank are arranged according to ladder form. Said invention also can obtain obvious energy-saving effect.

The invention discloses a improving and stabilizing titanium recovery technique in titanium micro-alloying high intensity weathering steel smelting and continuous casting process. The technique includes the following steps: adopting modern electric furnace to smelt; adjusting the component and adding titanium to do titanium micro-alloying in ladle refining furnace; and adopting protection casting. This can smelt out low carbon titanium micro-alloying high intensity weathering steel molten steel whose carbon content is less than 0.08%. And titanium recover is more than 70%. To adjust titanium percentage by weight can produce yield strength 450MPa-700MPa titanium micro-alloying high intensity weathering steel.

The invention discloses a device and a method for continuously mixing liquid preparations. The device for continuously mixing the liquid preparations can realize the simultaneous and continuous implementation of feeding, mixing and discharging under the control effect of a first control valve and a second control valve, and monitors the physical and chemical parameters of multiple monitoring points at predetermined time intervals under the action of a sampling monitor, thus enabling the liquid preparations to meet the requirements, and further guaranteeing the uniformity of discharge. Since the device for continuously mixing the liquid preparations can realize continuous production, so that the production batches can be divided according to time periods. Compared with the prior art, the production efficiency can be increased by using the device occupying a smaller area, so that the utilization rate of a plant is increased.

The invention relates to the technical field of plastic processing aids, in particular to a method for preparing high-temperature resistant zinc stearate. An obtained product is mainly taken as a lubricating mold release agent in the plastic industry for processing at the high temperature. The method comprises the following steps of: putting stearic acid into a reaction kettle under normal pressure to heat the stearic acid to 130 to 180 DEG C; adding zinc oxide and a catalyst in two steps; reacting, adding an antioxidant, stirring and discharging the reaction product, wherein temperature is kept between 130 and 180 DEG C in an entire reaction process; and smashing to obtain a zinc stearate product. The acid value of free stearic acid in the high-temperature resistant zinc stearate prepared by the method is less than 0.5 percent and the whiteness of the product is enhanced greatly after heat is preserved at the temperature of 220 DEG C for 2 hours. Moreover, the zinc stearate has the advantages of stable process control, stable product quality, small fluctuation, no pollution of the used catalyst and the antioxidant on the environment and capability of meeting the environmental protection requirements of energy conservation and emission reduction; and the process has the advantages of simpleness, easy implementation, contribution to expanding the application field of the zinc stearate and very high economic benefit and social benefit.

The invention provides high-strength normalized container steel with the yield strength at the 415 MPa level and a thermal treatment method of the high-strength normalized container steel with the yield strength at the 415 MPa level and belongs to the technical field of steel for pressure containers. When the thickness of the high-strength normalized container steel with the yield strength at the 415 MPa level is 6-29 mm, the high-strength normalized container steel with the yield strength at the 415 MPa level comprises, by weight, not larger than 0.2% of C, 0.1%-0.5% of Si, 1.0%-1.3% of Mn, not larger than 0.035% of P, not larger than 0.035% of S, 0.1%-0.18% of V, 0.4%-0.7% of Ni and the balance Fe and inevitable impurities; when the thickness of the high-strength normalized container steel with the yield strength at the 415 MPa level is 30-55 mm, the high-strength normalized container steel with the yield strength at the 415 MPa level comprises, by weight, not larger than 0.2% of C, 0.1%-0.5% of Si, 1.31%-1.6% of Mn, not larger than 0.035% of P, not larger than 0.035% of S, 0.1%-0.18% of V, 0.4%-0.7% of Ni and the balance Fe and inevitable impurities; and when the thickness of the high-strength normalized container steel with the yield strength at the 415 MPa level is 56-75 mm, the high-strength normalized container steel with the yield strength at the 415 MPa level comprises, by weight, not larger than 0.2% of C, 0.1%-0.5% of Si, 1.61%-1.7% of Mn, not larger than 0.035% of P, not larger than 0.035% of S, 0.1%-0.18% of V, 0.4%-0.7% of Ni and the balance Fe and inevitable impurities. The high-strength normalized container steel with the yield strength at the 415 MPa level and the thermal treatment method of the high-strength normalized container steel with the yield strength at the 415 MPa level have the advantages that the mechanical properties of a steel plate can all meet standard requirements, it can be guaranteed that the steel plate has good tenacity, the technology cost is low, and the technology is easy to implement.

The invention belongs to the technical field of daily protection products, in particular to a filter cloth material for a mask with self-antibacterial and self-disinfecting functions and a manufacturing method thereof. The specific implementation process comprises the steps of discharging, degreasing, washing, acid pickling, sensitizing, washing, activating, pre-silvering, silvering, washing, surface modifying, drying, collecting and the like, and proper nano-silver particles can be deposited on the fiber surface after a conventional mask filter material is treated by the method, so that the killing effect on microorganisms such as bacteria or viruses is realized. According to the technology, the defect that an existing mask filter material can only filter particulate matter or droplets but cannot exterminate bacteria or viruses can be overcome; meanwhile, the nano-silver particles and the filter material fibers are firmly combined and are only distributed on the surfaces of the filtermaterial fibers, and compared with other silver-containing filter materials, the nano-silver filter material has the advantages of continuous industrial production, high effective utilization rate ofsilver, strong binding force of the silver particles and the filter material fibers, low manufacturing cost and the like.

The invention discloses a continuous flame quenching heat treatment method for roll necks. The method comprises the following steps: carrying out displacement type quenching on a roll neck when a roll rotates; and after quenching on one side of the roll neck is finished, turning the roll and quenching the roll in the same mode. Meanwhile, the invention further discloses a continuous flame quenching heat treatment device for roll necks. The roll neck with the surface hardness of 40-55 HSc can be obtained, service conditions of a roll bearing are met, the roll rotates in a quenching process, a quenching device continuously moves from one side to the other side at constant speed, quenching uniformity is good, quenching operation is simple, and a process is controlled stably.

The invention discloses a method for improving the wash resistance of organic silicon nitrogen fire resistant fibers. The method is characterized in that in the immobilization cross-linking procedure in the production process of organic silicon nitrogen fire resistant fibers, the PH value of an immobilization cross-linking bath is maintained to be 6.0-8.0. The method is used for further reducing the loss rate of a fire retardant of organic silicon nitrogen fire resistant regenerated cellulose fibers in high-temperature alkali wash. The method overcomes the defect that the concentration of an immobilization cross-linking agent needs to be improved to ensure the effect of an immobilization cross-linking reaction under the acid condition, and is easy to implement and stable in process control. Obtained fire resistant fibers are good in alkali-wash resistance, and the loss rate of the fire retardant in alkali wash is low.

The invention discloses a steel plate cooling method. After a steel plate is normalized, cooling in a quenching stage is carried out at a speed of 40-60m/min, and speed of a roller cooled by the quenching stage is 30-40m/min. The steel plate cooling method has the advantages that the steel plate is quickly cooled after being normalized, phase-transition temperature can be reduced while cooling speed of the steel plate is increased, nucleation rate of ferrite is increased, ferrite grains are refined, a phase transformation structure is thinned, carbide growth of microalloy elements can also be inhibited, and the microalloy elements are dispersed and separated out at low temperature, and thus strength of a steel plate is improved, and toughness of the steel plate is not reduced.

The invention relates to an organic polymer synthesis technique, in particular to a complex electron donor for drag reducer polymerization, belonging to the technical field of chemical industry. The complex electron donor is characterized in that polymerization monomers are added into an anhydrous oxygen-free reaction system, wherein the mixture ratio of laurylene to styrene is 10:1-1:10, or the mixture ratio of laurylene to octylene is 10:1-1:10; the cocatalyst is 0.1%-3% and is obtained by diluting triisobutylaluminum with a refined solvent, wherein the triisobutylaluminum is 20%, the normal heptane is 20%-50%, the rubber solvent oil is 20%-50%, the main catalyst is 0.005%-0.1%, and the complex electron donor is 0.01%-0.5%; and the reaction temperature of the system is -40-10 DEG C, the stirring process is carried out continuously, the reaction time is 24-188 hours, thus a sticky super high molecular weight polymer is obtained. The invention has the advantages of obviously improving the activity of the catalyst system, reducing the consumption of the main catalyst, reducing the consumption of other additives, and the like. In the process of production, the heat release of the catalysis system is uniform, and the process control is stable. By applying the complex electron donor of the invention to long-distance oil transmission pipelines, the pipeline transmission capacity is improved.

The invention discloses a process for producing cathode copper by electrolytic refining of a low-grade copper anode plate. The process is as follows: electrolyte adopted by electrolytic refining comprises the following components: 190-200g/L of H2SO4, less than or equal to 15g/L of Ni<2+>, less than or equal to 15g/L of As, and 42-46 g/L of Cu<2+>; the additives are ADT, gelatin, thiourea and hydrochloric acid, the addition amount of the ADT is 10-15 g/t.Cu, and the addition amount of the gelatin is 20-30 g/t.Cu; and the addition amount of the thiourea is 50-60 g/t.Cu, the addition amount of the hydrochloric acid is 200-300 ml/t.Cu, the temperature of the electrolyte is 62-64 DEG C, and the circulation amount of a single tank is 30-35 L/min. The process is stable in process control and high in high-quality product rate of products, the purpose that the process adapts to raw materials is achieved, and good conditions are created for widening copper raw material purchasing channels and reducing cost and increasing benefits of enterprises.