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69results about How to "High material utilization" patented technology

Processing method of thin and long aluminium alloy thin-walled cylinder

The invention provides a processing method of a thin and long aluminium alloy thin-walled cylinder and belongs to a mechanical processing method of a slewing structure, and the processing method is used for carrying out friction stir welding on a shell blank so as to process and mold the shell blank into a bent generatrix thin-walled cylinder shell. The method provided by the invention can be used for solving the problems of poor shell generatrix displacement, poor shell roundness, uneven wall thickness, clearance at welding seams, unqualified performance detection and incapability of ensuring use requirements in the existing processing method. The method comprises a part manufacturing step, a matching step, a caustic washing step, a trial assembly step, a positioned welding step, a friction stir welding step, a welding seam polishing step, a stress-relief annealing step, an X-ray detection step, a shape processing step, a ultrasonic flaw detection step and an end face hole processingstep. The method provided by the invention can be used for solving the problems of poor shell roundness, uneven wall thickness, clearances at the welding seams and unqualified performance detection in the existing processing method, improving the shell processing precision and reliably ensuring the product quality.
Owner:HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL

Radio frequency coaxial electrical connector with stamping contact element

The invention discloses a radio frequency coaxial electrical connector with a stamping contact element. The connector comprises a plug and a socket, wherein the plug is formed by being sleeved with a plug outer conductor, a plug inner conductor, a plug insulator and a plug compressing-connection cylinder, the socket is formed by being sleeved with a socket outer conductor, a socket inner conductor, a socket insulator and a socket compressing-connection cylinder, and the connector is characterized in that the plug outer conductor is provided with a thin neck and a groove-cutting stamping plug contact part in a turning-riveting and compressing-connection mode. The socket outer conductor is provided with a stamping socket contact part of a step in a turning-riveting and compressing-connection mode. The plug is in butt joint with the socket, the plug contact part is in elastic contact with the socket contact part, the plug inner conductor is in inserted connection with the socket inner conductor, and radio frequency coaxial electrical connection is achieved. Compared with the prior art, the radio frequency coaxial electrical connector has the advantages of being high in material utilization rate, low in production cost, reliable in connection, rapid and convenient to butt join and separate, good in anti-vibration and anti-shock performance, and particularly suitable for large-power signal transmission.
Owner:SUZHOU HUAZHAN SPACE APPLIANCE

Finish rolling forming technique of numerical control ring rolling machine of internal long neck special-shaped wind power flange

The invention disclosed a finish rolling forming technique of a numerical control ring rolling machine of an internal long neck special-shaped wind power flange, belonging to the field of wind driven generator apparatuses. The technique comprises the following steps of: selecting a continuously cast bloom to feed materials on a sawing machine; heating a matched furnace according to an actual capacity of a heating furnace; then, blanking on an oil press to obtain blank; returning the furnace for heating and thermally preservation; discharging the furnace, carrying out finish-rolling on the numerical control ring rolling machine so as to form a combined forging blank; cooling the combined forge blank by air; after the cooling is finished, sawing from the middle of the side surface of the combined forging blank, to obtain two internal long neck flange ring member blanks; thermally treating the internal long neck flange ring member blank; carrying out rough-turning and finish-turning on the ring member blank after thermal treatment on a vertical numerical control machine; detecting flaw of the ring member after finish turning by ultrasonic waves; next, detecting mechanical performance indexes, granularity and non-metallic inclusion; and realizing identification package of a product. The technique in the invention increases utilization rate and production efficiency of flange forging material as well as performance of a forge piece.
Owner:XUZHOU JIUDING FORGING TECH

Nuclear reactor integrating lower end socket integrity profiling and forging method

ActiveCN104259362AHigh material utilizationShorten the manufacturing cycle
The invention discloses a nuclear reactor integrating lower end socket integrity profiling and forging method and belongs to the technical field of forging forming. The nuclear reactor integrating lower end socket integrity profiling and forging method comprises steps of step one determining the external diameter and the internal diameter of an opening end of the end socket to be the end socket outer ball top total height and the internal semi-circle spherical radius according to a requirement of a drawing of the to-be-machined end socket; step two producing a special hammer for rotary swaging; step three producing an upper die, a lower die and a lower die base pad of a die; step four installing the lower die on a workbench of a hydraulic press before forging and performing upsetting on blanks through a hydraulic press flexible cross beam press upper flat plate; step five sequentially installing the lower die base pad, the lower die, the upper die and the special hammer on the hydraulic press workbench, placing the lower die base pad at a lowest position of the workbench, then placing the lower die and the upper die and measuring the blank size after rotary forging and producing an integrating lower end socket product after the blank size is qualified, wherein the upper die is above the lower die, the hydraulic press flexible cross beam is connected with the special hammer, and all dies are guaranteed centering.
Owner:CHINA FIRST HEAVY IND

Truss type retaining wall

The invention discloses a truss type retaining wall. The upper end of a lower part pile foundation is connected with an upper part truss structure through a bearing platform beam; the upper part truss structure comprises upper chord stand columns, lower chord stand columns, horizontal web girders, inclined web girders, transverse connecting beams and retaining plates; wherein the lower chord stand columns are connected through the transverse connecting beams to form a grid structure; each upper chord stand column is connected with the corresponding lower chord stand column through a plurality of horizontal web girders and a plurality of inclined web girders; every two adjacent upper chord stand columns are connected through the retaining plates to form an integrated retaining wall. The invention relates to a vertically placed cantilever truss structure system, which mainly utilizes the rationality and the stability of stress of truss triangular structure arrangement to improve the bearing capability and the lateral migration resisting ability of a retaining structure. Meanwhile, the overturning moment of a vertical truss retaining structure is balanced by utilizing the weight G of anti-pressure soil on the upper part of the bearing platform. According to the truss type retaining wall provided by the invention, the material intensity can be fully utilized, and the material utilization ratio is improved, and the construction cost of the foundation is reduced.
Owner:CHONGQING UNIV +1

Special die having movable force plug for the hydraulic forming of outer housing

InactiveCN101172295AHigh material utilizationIncreased sheet forming limit
The invention relates to the hydraulic forming technology of an alloy plate, in particular to a magnesium alloy digital camera casing with a movable male die and a similar product hydraulic forming special-purpose die assembly. The technology is mainly used for the heating, the hydraulic pressure, the drawing and the forming of the magnesium alloy sheet material. The die assembly is provided with a hydraulic pressure room, a concave die, a clamping ring, a drawing male die and a heating element. The drawing male die adopts a blocking type composite structure, and comprises a fixed male die and a movable male die moving along a slip way up and down. The movable element in the combined drawing male die improves the deformation sequence and the stressed state of a forming part, to lead the limit of the sheet material to being formed and the rate of finished products to be improved. The invention has the advantages that the availability of material is high, the surface quality of a manufactured product is good, the rigidity is high, the shape and the dimension precision are high, the invention can form a complicated plate part with a digital camera casing and other shapes, in particular to the plate part required to be heated and formed when forming a magnesium alloy plate part; the service life of the die assembly is long, the replacement is simple, and the process and the installation are simple.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

Rigid roof cable-dome structure with circumferential-direction support

PendingCN107268792AHigh material utilizationgood stiffness
The invention discloses a rigid roof cable-dome structure with a circumferential-direction support. The rigid roof cable-dome structure comprises an internal pull ring and an external ring, at least one round of circumferential-direction assembly is arranged between the internal pull ring and the external ring, and the circumferential-direction assembly separates the part between the internal pull ring and the external ring into at least two stages of structures; a plurality of ridge cables arranged in a radial shape in the radial direction are arranged between the internal pull ring and the external ring, one ends of the ridge cables are connected with the internal pull ring, the other ends of the ridge cables are connected with supporting points of the external ring, and the middle of each ridge cable is connected with the upper end portion of the corresponding circumferential-direction assembly; and oblique cables are arranged between the circumferential-direction assembly and the external ring as well as between the circumferential-direction assembly and the internal pull ring correspondingly, if multiple rounds of circumferential-direction assemblies are arranged, oblique cables are arranged between the every two adjacent circumferential-direction assemblies, and the oblique cables are arranged in a radial shape in the radial direction. According to the rigid roof cable-dome structure with the circumferential-direction support, force transferring is direct, the high-strength character of an inhaul cable is brought into full play, the rigid roof cable-dome structure has the advantages of being good in rigidity, good in stability, simple in structure, rapid in construction and the like, meanwhile a rigid roof technology adopted by the rigid roof cable-dome structure is mature, and the cost is relatively low.
Owner:CHINA SOUTHWEST ARCHITECTURAL DESIGN & RES INST CORP LTD

Latticed lead extrusion damper

InactiveCN102966199AHigh material utilizationGood energy consumption
The invention provides a latticed lead extrusion damper, which comprises an outer tube, end plate reinforcing plates, end plates, a movable shaft, a fixed shaft, connecting lugs, lead extrusion ports, lead, sealing rings, a movable shaft guide pipe, limiting supports, limiting baffles, a lattice frame, longitudinal lattice plates and transverse lattice plates, wherein the end plate reinforcing plates and the end plates are arranged at the two ends of the outer tube, the sealing rings and the limiting supports are arranged at the two internal ends of the outer tube, the movable shaft is arranged on one internal side and the fixed shaft is arranged on the other internal side and is connected with the end plate; and the lattice frame is arranged between the movable shaft and the outer tube, a plurality of lead extrusion ports are arranged at the middle part of the movable shaft and correspond to transversely cut areas of the lattice frame one to one, and the limiting baffles are respectively arranged on the external sides of the lead extrusion ports (7). The latticed lead extrusion damper has the effects and the advantages that the material utilization ratio is high and the energy consumption effect is good; and the latticed lead extrusion damper is simple to fabricate and install, is convenient to use, and not only can be used for seismic design of newly constructed building engineering, but also can be used for reinforcement and repair of the existing engineering.
Owner:SHENYANG JIANZHU UNIVERSITY

Machining method of rotating blade spacer of axial compressor/turbine

The invention discloses a machining method of a rotating blade spacer of an axial compressor. In the method, a round bar steel material made of 2Cr13 is adopted for sawing; ring rolling equipment is used for forging to obtain a blank; the blank is successively subjected to rough machining and fine machining of tenon tooth on a CNC lathe to obtain an annular blank; finally, a wire cutting frock is used for carrying out wire cutting on the annular blank to obtain a finished product of spacer; and first article inspection is carried out on the spacer by three coordinates, and qualified products are put in storage. The wire cutting frock comprises a truss with the side surface being a right-angle triangle, the included angle of the upper slope of the truss and the horizontal plane and the installation angel of the spacer are complementary angles, and the upper slope is used for putting the annular blank. The invention combines the characteristics of spacer installation and appearance to design the production method of the spacer, thus simplifying the processing procedures, improving the production efficiency, and increasing the utilization ratio of the forge piece materials toabove 40%. The invention realizes the purpose of energy saving and emission reduction during production and manufacture in the equipment manufacturing industry and obtains the spacer products with favourable identity.
Owner:XIAN SHAANGU POWER
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