38results about How to "Strong process practicability" patented technology

The invention relates to a preparation method of a tungsten nickel iron alloy metallographic phase, which belongs to the technical field of determination of a material surface structure. A machining method is mainly adopted to obtain a metallographic phase tissue structure of tungsten nickel iron alloy. The preparation method comprises a sample preparation step, a grinding step and a polishing step. In the sample preparation process, the tungsten alloy is cut into a sample piece, and after the cold mounting is performed on the sample, a remaining surface metamorphic layer in the electric sparkmachining is removed. In the grinding process, the tungsten alloy sample is inserted into an epoxy resin clamp, the surface of the sample is ground, after the grinding, the sample is ground by adopting diamond spray or diamond grinding paste, and finally the sample is ultrasonically cleaned. In the polishing process, after the sample is polished, the sample is ultrasonically cleaned and dried. According to the preparation method of the tungsten nickel iron alloy metallographic phase prepared in the invention, after the grinding and polishing, the metallographic phase observation can be performed without chemical corrosion, and the obtained metallographic phase is clear and complete in tissue structure and has no defects such as over-corrosion or corrosion pits; and the whole preparation process is safe and environmentally friendly, the operability is high, and the preparation process is simple and reliable.

A fluteless rolling technology for rolling steel section includes sequentially determining 14 technological parameters including total cross-section shrinkage ratio of the workpiece to be rolled, the pressing down size of each pass, total number of passes, 5 correcting coefficients, etc, and rolling by fluteless rolling mill while regulating the clamp to the workpieces.

The invention relates to a method for recycling waste silicon slag discharged in production of zirconyl chloride and belongs to a method for recycling waste slag discharged in the preparation process of a zirconium compound. The method is characterized by comprising the following steps of: firstly, converting waste silicon slag into an aqueous solution of sodium silicate, filtering, and then using the residue filtered out directly as a raw material for preparing the zirconyl chloride product; performing crystallization treatment on the filtrate, filtering the crystallized product, drying the obtained filter cake, and preparing all of the filter cake into a 4A molecular sieve product; and then realizing complete recycling of the waste silicon slag. The method for recycling waste silicon slag discharged in the production of zirconyl chloride provided by the invention is low in equipment investment and simple and convenient in operation steps. As a result, the environmental pollution of the waste silicon slag discharged in the production of zirconyl chloride in the prior art on soil, water and atmosphere is avoided. The production cost of the zirconyl chloride is obviously reduced, the economic benefit of a zirconyl chloride production enterprise is improved and the development of the zirconyl chloride industry is promoted.

The invention discloses a three-stage integrated treatment system for organic biomass garbage and a treatment method for the organic biomass garbage. The treatment system involves a three-stage fermentation reactor, a spiral feeding and discharging device, an external circulating coil and a deodorization device. According to the system, the kitchen garbage is subjected to micro-aerobic pretreatment by integrating a micro-aerobic process, an anaerobic process and an aerobic process, so that the problem of unstable operation caused by acidification in the anaerobic process is avoided; secondly,a horizontal plug flow mode and an integrated slow stirring mode are adopted, so that the mass transfer efficiency and the heat transfer efficiency in the anaerobic process are improved; and thirdly,the materials are conveyed on line in the micro-aerobic, anaerobic and aerobic processes in a multi-stage spiral conveying mode, and the problems of poor flowability and blockage of the material floware solved. The process is high in practicability, continuous and efficient, well solves the environmental problem caused by the urban kitchen garbage, comprehensively utilizes the wastes in a recycling manner, and is suitable for environment-friendly treatment of easily biodegradable organic wastes.

The invention discloses a field electron emission cathode array based on a molybdenum substrate and a preparation method thereof. According to the invention, an etching mask is firstly formed on a molybdenum substrate; then high density plasma dry etching is carried out to the molybdenum substrate to form molybdenum pointed cones. The molybdenum pointed cones are directly formed on the substrate; the problem of poor adhesion with underlay is thoroughly solved; heavy current and strong electric field can be borne; high rate isotropic etching is carried out to the molybdenum body material through the high density plasma dry etching method; therefore large area appearance accordant molybdenum pointed cone arrays can be obtained at the same time; large area even emission can be realized; only primary etching is contained in the manufacturing process of the field electron emission cathode array; the pointed cone centers and gate hole centers are automatically aligned without deflection; compared with the prior art, the technical solution of the invention is featured by few procedures, high efficiency, simplicity and low cost and is applicable to large scale preparation.

The present invention discloses a process for deep purification and recovery of mercury in lead-zinc smelting flue gas. According to the process, a macromolecule nanometer material demercuration agentKH is adopted and added to a first-class high-efficiency washing demercuration tower and a second-class deep washing demercuration tower, certain process conditions are controlled to realize deep purification of mercury and wash down dust and other heavy metals in flue gas, and then a gas cooling tower, a power wave and an electric demister are used to deeply purify the flue gas. After the flue gas is treated, the Hg content in the flue gas is less than 0.03 mg/Nm<3>, the mercury content in sulfuric acid produced by flue gas is less than 0.0005%. The process meets the requirements of mercuryemission in flue gas, and the recovery rate of mercury in flue gas is 90% or more, and the process has good environmental benefits.

The invention relates to a missile folding rudder self-locking system in the technical field of missile equipment. The missile folding rudder self-locking system comprises an inner rudder, an outer rudder, a driving mechanism and a lock pin mechanism. The outer rudder is provided with a lock hole, the lock pin mechanism comprises a first lock rod, a second lock rod, a torsional spring and a lock pin sleeve, the lock pin sleeve is fixed on the inner rudder, the torsional spring is sleeved in the lock pin sleeve, and the first lock rod and the second lock rod are respectively inserted from two ends of the torsional spring and pre-press the torsional spring; the inner rudder and the outer rudder are in driving connection through the driving mechanism, in the process that the driving mechanism drives the outer rudder to be unfolded relative to the inner rudder, the torsion spring pushes the first locking rod and the second locking rod to be axially separated, and after the outer rudder and the inner rudder are unfolded in place, the end of the first locking rod and the end of the second locking rod are embedded into the locking holes correspondingly. The end of the first locking rod and the end of the second locking rod are used for preventing the inner rudder and the outer rudder from rotating in the radial direction. The missile folding rudder is simple in structure, high in process practicability, short in machining period and suitable for working in a high-temperature environment for a long time.

The invention relates to a process system for producing crude phenol by decomposing net sodium phenolate by using heating furnace flue gas. The process system comprises a traffic valve, a flue gas cooling system, a flue gas concentration regulating pressurization system and a phenate decomposition system. By improving the structure of a heating furnace chimney, the heating furnace flue gas containing CO2 is cooled, collected, thickened and pressurized and sent to the phenate decomposition system to react with the net sodium phenolate to form the crude phenol and a sodium carbonate solution, the problem that the crude phenol can further be produced without direct supply of a CO2 concentration gas source required for the decomposition of the phenate, the process flow is simple, the operationis convenient, the investment is saved, the operation cost is low, no pollution is caused, and the national environmental protection requirements are met.

The invention discloses a method for forming patterns on a polyester/silk cloth surface through a magnetron sputtering technology. The method comprises: 1) respectively carrying out coating finishingand laser etching on the surface of a fabric; and 2) coating the fabric surface being subjected to coating finishing and laser etching with a metal plating layer by using magnetron sputtering. According to the present invention, by combining magnetron sputtering, coating finishing and laser etching, the problem that the pattern is formed on the metal fabric is effectively solved, the original appearance characteristics of the fabric are changed, and the formed pattern is clear and distortion-free, and has good fastness; and the process has advantages of strong practicality and high productionefficiency, and the plated film layer has advantages of uniformity, compactness, and strong adhesion.