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321results about How to "Well organized" patented technology

Aluminum alloy workpiece additive manufacturing method implemented through friction stir welding

The invention discloses an aluminum alloy workpiece additive manufacturing method implemented through friction stir welding. On the basis of an existing electric arc additive manufacturing aluminum alloy workpiece, the characteristic that aluminum alloy is soft in property is combined, after an aluminum alloy workpiece is manufactured from electric arc additives layer by layer, friction stir welding intensification treatment is conducted on each layer, and therefore, defects such as pass gaps, interlayer incomplete fusion, air holes and the like can be eliminated through friction stir weldingwhen each layer is manufactured. Compared with the pure electric arc additive manufacturing aluminum alloy workpiece, by means of the method, the structural state of the aluminum alloy workpiece obtained through additive manufacturing can be improved; the grains can be finer; second-phase grains are finer and are distributed more uniformly; and the dislocation density achieved in the aluminum alloy additive manufacturing workpiece is increased. Compared with existing friction stir welding intensification, grain refining and defect elimination are conducted on each layer of the workpiece so that the strength of the whole workpiece can be improved rather than only surface modification, namely surface intensification, is conducted.
Owner:NAT INST CORP OF ADDITIVE MFG XIAN

Manufacturing method of high-quality P92 large-aperture thick-wall seamless steel pipe of ultra-supercritical unit

The invention relates to a manufacturing method of a high-quality P92 large-aperture thick-wall seamless steel pipe of an ultra-supercritical unit and belongs to the field of heat-resistant steel tubing manufacture. The manufacturing method realizes dynamic combination of internal control of steel chemical components, improvement of steel purity, steel ingot casting, enclosed upsetting, reverse extrusion punching, extrusion molding and spraying quenching, the steel tube obtained by the manufacturing method satisfies ASMESA335, EN10216-2 and GB5310 standard requirements, the microstructure of the steel tube is completely tempered martensite and satisfies the requirement of clear martensite lath orientation in the 400x view field, delta-ferrite content is less than or equal to 1% and less than or equal to 3% in the most serious field, and comprehensive performance indexes satisfy the international advanced level. The manufacturing method can produce different specifications of P92 large-aperture thick-wall seamless steel pipes having the external diameter of 325-1200mm, wall thickness of 20-180mm and length less than or equal to 12500mm, and can be used in different fields of an ultra-supercritical boiler and power-station four-pipes. The manufacturing method can effectively guarantee product quality and the high-quality P92 large-aperture thick-wall seamless steel pipe obtained by the manufacturing method can replace an imported product.
Owner:INNER MONGOLIA NORTH HEAVY INDS GROUP

Ultrafast cooling device for large rolled H-shaped steel

The invention relates to an ultrafast cooling device for large rolled H-shaped steel, belonging to the technical field of production control and cooling for high-performance H-shaped steel.The invention provides a ultrafast cooling device for large rolled H-shaped steel, which can enable the H-shaped steel to obtain good texture and mechanical property.The cooling device comprises a rail support of a transverse rail, which is fixed at the upper part of the device, a cooling unit provided with a cooling rack, which is arranged on the transverse rail and a transverse roller wheel which is arranged below the cooling rack; wherein the cooling unit comprises a lateral nozzle unit, an upper nozzle unit and a side board provided with a groove; the side board is arranged on the cooling rack, a lateral nozzle tank body is fixed outside the side board; and an upper nozzle unit is arranged above the inside of the side board, a lower nozzle unit is arranged on a motor base of a conveying rail, the lower nozzle unit is connected with a water supply pipe; an electromagnetic flowmeter, a pressure sensor and a pneumatic open and close valve are respectively on the water supply pipe and thermodetectors are respectively arranged at the entrance and exit of the ultrafast cooling device.
Owner:NORTHEASTERN UNIV +1

Method for preparing rare-earth-tungsten electrode material

The invention relates to the technical field of metallurgical smelting, in particular to a method for preparing a tungsten electrode material by smelting. The method comprises the following steps: firstly, sufficiently mixing tungsten powder and rare-earth oxide powder to obtain mixed powder, and processing the mixed powder through hot-press forming to obtain a tungsten-based block mixture; secondly, performing electron beam vacuum high-temperature smelting on the tungsten-based block mixture, and solidifying and cooling to obtain a rare-earth-tungsten alloy ingot; and finally, thermally processing the rare-earth-tungsten alloy ingot in vacuum to obtain the rare-earth-tungsten electrode material. Extremely high-density energy is supplied by an electron beam to smelt a rare-earth-tungsten material, so that the rare-earth-tungsten electrode material obtained after smelting is relatively high in compactness; compared with hot-press sintering, the electron beam smelting technology has an obvious advantage in preparation of a refractory metal and can obtain a more excellent structure; the performance of the electrode material can be improved by doping a certain amount of rare-earth oxide; and through an analysis on change of the microscopic hardness, improvement of the added rare-earth oxide on the hardness of the electrode to a certain extent can be determined.
Owner:DALIAN UNIV OF TECH

Maximum-thickness S355G10+N steel plate for ocean platform and production method of steel plate

The invention discloses a maximum-thickness S355G10+N steel plate for an ocean platform and a production method of the maximum-thickness S355G10+N steel plate. The production method of the maximum-thickness S355G10+N steel plate comprises smelting, casting, heating, rolling, cooling and heat treatment processes. The maximum-thickness S355G10+N steel plate comprises the following chemical ingredients in percentage by weight: 0.08-0.12% of C, 0.15-0.50% of Si, 1.40-1.65% of Mn, less than or equal to 0.015% of P, less than or equal to 0.005% of S, 0.040-0.060% of V, 0.020-0.030% of Nb, 0.020-0.050% of Al, less than or equal to 0.43% of Cea, less than or equal to 0.22% of Pcm and the balance of Fe and inevitable impurities. The maximum-thickness S355G10+N steel plate has the advantages that low-carbon and high-microalloying design thought is adopted in composition design, the problem of segregation of carbon and manganese is solved, and the requirements such as high strength, high impact toughness and wide cold bending performance are met; hardenability of the maximum-thickness S355G10+N steel plate is guaranteed under the low-carbon and low-equivalent carbon content conditions, and the maximum-thickness S355G10+N steel plate has good structure and overall performance and welding performance; and the maximum-thickness S355G10+N steel plate has good mechanical properties, welding performance and processability and can meet requirements of construction technological conditions of an ocean engineering equipment manufacturing plant.
Owner:WUYANG IRON & STEEL

Cast rolling H-shaped steel cooling device

The invention provides a cast rolling H-shaped steel section cooling device. The cast rolling H-shaped steel section cooling device comprises a shell, three sets of upper spraying nozzles, an upper spraying pipe, three sets of lower spraying nozzles, a lower spraying pipe, three sets of left spraying nozzles, a left spraying pipe, three sets of right spraying nozzles and a right spraying pipe. The shell is of a box-shaped structure, the three sets of upper spraying nozzles are arranged in the shell and are used for being respectively aligned with two R portions of the upper side of the H-shaped steel section and the center of a web perpendicularly, the upper spraying pipe is arranged in the shell and is connected with the three sets of the upper spraying nozzle, the lower spraying pipe is arranged in the shell and is connected with the three sets of the lower spraying nozzles, the three sets of the left spraying nozzles are arranged in the shell and are sequentially arranged from top to bottom and are used for being aligned to the left side face of the H steel section to enable cooling water to be evenly sprayed to the left side face of the H steel section, the left spraying pipe is arranged in the shell and is connected with the three sets of left spraying nozzles, and the right spraying pipe is arranged in the shell and is connected with the three sets of right spraying nozzles. Cooling water sprayed by each set of spraying nozzles does not interfere with each other. The cast rolling H steel section cooling device enables the H steel section to be good in organization state, and therefore better comprehensive mechanical property is obtained.
Owner:LAIWU IRON & STEEL GRP

3D super-plasticizing treatment method and superplasticity precision shaping method for magnesium alloy

The invention discloses a 3D super-plasticizing treatment method and superplasticity precision shaping method for magnesium alloy. Within the superplastic deformation temperature range of the magnesium alloy, a non-hollow magnesium alloy casting obtained after forging pretreatment passes through at least two cycles to obtain a forging stock of the set size, and 3D super-plasticizing treatment is finished, wherein the non-hollow magnesium alloy casting passes through the axis Z, the axis X and the axis Y in sequence to press down the stock to achieve a cycle. By means of 3D super-plasticizing forging treatment, through large plastic deformation in all directions, homogenizing, grain refining and structure densifying of materials are fully achieved, refined grains are averagely smaller than 20 microns, the equiaxial grain refining effect is remarkable, and the strength performance of the casting can be greatly improved. Through the superplasticity precision shaping method for the magnesium alloy based on 3D super-plasticizing treatment, a light magnesium alloy transition car coupler with high strength is prepared out; and compared with an existing transition car coupler, the weight is reduced by about 75%, the strength is above 350 MPa, and the requirement for the service life of the transition car coupler of this type can be met.
Owner:崇州天智轻量化制造有限公司

Heat treatment process of steel forging for hydraulic cylinder of deep-sea oil recovery equipment

The invention relates to a heat treatment process of a steel forging for a hydraulic cylinder of deep-sea oil recovery equipment, and the heat treatment process comprises the following steps: (1) selecting martensitic precipitation hardening stainless steel as a steel forging material of a 15-5PH hydraulic cylinder, wherein the martensitic precipitation hardening stainless steel comprises the following elements in percentage by weight: 0.04-0.07% of carbon, 0.001-0.60% of silicon, 0.80-1.00% of manganese, 14.00-14.50% of chromium, 5.00-5.50% of Ni, 2.50-4.00% of copper,0.15-0.25% of niobium, not more than 0.035% of phosphorus and not more than 0.025% of S, the chromium equivalent is 14.08-15.52% and the Ni equivalent is 6.60-8.10%; (2) heating the forging to 1060+ / -5 DEG C, carrying out heat preservation for 180 minutes, taking out the forging, and carrying out oil cooling on the forging until the temperature is lower than 32 DEG C; (3) heating the forging to 620+ / -5 DEG C, carrying out heat preservation for 360 minutes, taking out the forging, and air-cooling the forging to room temperature; (4) heating the treated forging processed in the step (3) of the hydraulic cylinder to 1040+ / -5 DEG C, carrying out heat preservation for 140 minutes, taking out the forging and carrying out oil cooling on the forging until the temperature of the forging is lower than 32 DEG C; and (5) heating the forging to 580+ / -5 DEG C, carrying out heat preservation for 360 minutes, taking out the forging and air-cooling the forging to room temperature.
Owner:NANJING DEV ADVANCED MFG

Traditional Chinese medicine ultrasonic atomization agent for treating xerophthalmia and preparation method thereof

The invention discloses a traditional Chinese medicine ultrasonic atomization agent for treating xerophthalmia and a preparation method thereof. The traditional Chinese medicine ultrasonic atomization agent is prepared from the Chinese medicine raw materials in percentage by weight: 8 to 25 percent of Chinese medicine raw materials and 75 to 92 percent of water, wherein the Chinese medicine raw materials comprise the following components in percentage by weight: 5 to 15 percent of radix ophiopogonis, 5 to 15 percent of the root of straight ladybell, 5 to 15 percent of radix bupleuri, 5 to 15 percent of angelica root, 5 to 15 percent of chrysanthemum, 5 to 15 percent of barbary wolfberry fruit, 5 to 15 percent of dendrobe, 5 to 15 percent of mulberry leaf, 5 to 15 percent of divaricate saposhnikovia root, 5 to 15 percent of fructus viticis and 2 to 12 percent of mint. The traditional Chinese medicine combination is dialectically screened, and the traditional Chinese medicine ultrasonic atomization agent is high in preparation purity, high in clarity and suitable for an ultrasonic atomization instrument for xerophthalmia, the liquid medicine reaches the eye conjunctiva and surrounding skin of the eyes to realize blood circulation, the absorption and availability is high, and the liquid medicine is easily accepted by a patient. Compared with the methods for treating xerophthalmia, such as single eye drops for dropping the eyes, traditional Chinese medicine for oral administration and traditional Chinese medicinal fuming and washing external treatment, the ultrasonic atomization agent has the advantages of accurate curative effect and no toxic or side effect, and a novel effective and non-toxic treatment medicine and method can be increased for the common diseases and frequently-occurring diseases in ophthalmology. The ultrasonic atomization agent has the advantages of simple manufacture, convenience, safety, good curative effect, low cost and no toxic and side effect.
Owner:于耀光 +1

Intelligent bicycle garage

PendingCN107542294AWith electromagnetic locking functionEnsure safetyParkingsStructural engineeringControl theory
The invention discloses an intelligent bicycle garage comprising a peripheral support, a rotating lifting device and a push-and-pull mechanism. The peripheral support is used for storing bicycles in astereoscopically-stacked manner. The rotating lifting device is located at the center axis in the peripheral support and used for conveying the bicycles to each bicycle storage stall in the peripheral support. The push-and-pull mechanism is located between the peripheral support and the rotating lifting device and is used for pushing the bicycles on the rotating lifting device into the bicycle storage stalls on the peripheral support and pulling the bicycles on the bicycle storage stall on the peripheral support into the rotating lifting device. The bicycle in a lifting frame is lifted by a rotating mechanism and a lifting mechanism to the closest bicycle storage stall on the peripheral support, then the bicycle is parked in the bicycle garbage through the push-and-pull mechanism, and thebicycle storage efficiency is high; then, an empty lifting frame falls to the entrance and exit position of the peripheral support under the action of the rotating mechanism and the lifting mechanism, the procedure is executed in cycles, and the bicycles are parked in the bicycle garage in the stereoscopically-stacked manner. The intelligent bicycle garage can reduce the occupied area of the bicycles and improve the space utilization rate.
Owner:湖北聚程万丽科技有限公司
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