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43 results about "Manufacturing technology" patented technology

MOSFET using gate work function engineering for switching applications

InactiveUS20060273379A1Highly functionalLower capacitance CgdSemiconductor devicesCapacitanceWork function engineering
This invention discloses a new MOSFET device. The MOSFET device has an improved operation characteristic achieved by manufacturing a MOSFET with a higher gate work function by implementing a P-doped gate in an N-MOSFET device. The P-type gate increases the threshold voltage and shifts the C-Vds characteristics. The reduced Cgd thus achieves the purpose of suppressing the shoot through and resolve the difficulties discussed above. Unlike the conventional techniques, the reduction of the capacitance Cgd is achieved without requiring complicated fabrication processes and control of the recess electrode.
Owner:ALPHA & OMEGA SEMICON LTD

Ceramics particle strengthened composite material lining metal tube and manufacturing method thereof

InactiveCN101900227AExtended service lifeImprove wear resistanceCorrosion preventionPipe protection against corrosion/incrustationPolyesterManufacturing technology
The invention discloses a ceramics particle strengthened composite material lining metal tube and a manufacturing method thereof, belonging to the field of composite wear-resistant tubes. 4,4-Diphenylmethane diisocyanate (MDI), polyester glycol, 1,4-butanediol (BD), ceramics particles and the like serve as raw materials to prepare composite material liquid castables, and a centrifugal casting technology is adopted to cast polyurethane base ceramics particle strengthened composite material lining layers on the inner wall of an outer thimble. The invention has the beneficial effect that the prepared ceramics particle strengthened composite material lining metal tube has excellent abrasive resistance and corrosion-resistance and greatly improves service life. The raw materials of the invention are easy to be obtained, manufacturing technology is simple, cost is low and economic benefit is obvious and practical application and mass production are beneficial for factories.
Owner:XUZHOU SHENGHAI MACHINERY MFG TECH

Composite welding method of pillow beam, pillow beam and rail vehicle with pillow beam

InactiveCN106964902AAchieve lightweightImprove corrosion resistanceUnderframesWorkpiece edge portionsManufacturing technologyEngineering
The invention relates to the field of rail transportation and machinery manufacturing, and particularly to a composite welding method of a pillow beam, the pillow beam and a rail vehicle with the pillow beam. The method comprises the following steps that laser-MAG composite welding is used for welding the pillow beam of the stainless steel material, and inserted-connected structures of rib plates are optimized; during manufacturing, the rib plates are preassembled and welded to form a rib plate assembly, then the whole structure is welded, so that the pillow beam can adopt to the stainless steel material to replace weathering resistant steel material in whole, the lightweightening of the pillow beam is achieved, and the corrosion resistance of the pillow beam is improved; through the welding modes of inserting connection and corner connection, and a to-be-welded welding seam is placed on the outer surface of a box type structure to adapt to a technology of single-face welding double-face forming of the laser-MAG composite welding; and self-restraint of pillow beam welding is achieved through the self-stiffness of the inserted-connected structures, the advantages of the laser-MAG composite welding of deep welding, low heat input, small welding deformation and good gap adaptability are played, a manufacturing technology without adjustment and repair of the stainless steel pillow beam is achieved, so that the manufacturing and processing efficiency of the rail vehicle are improved, and production cost is reduced.
Owner:CRRC QINGDAO SIFANG CO LTD

Laser wire fusing additive manufacturing titanium alloy component structure refining and isometric crystal converting method

ActiveCN111451504AEffectively compatibleRelease residual stressAdditive manufacturing apparatusIncreasing energy efficiencyManufacturing technologyMetallurgy
The invention provides a laser wire fusing additive manufacturing titanium alloy component structure refining and isometric crystal converting method. The laser wire fusing additive manufacturing titanium alloy component structure refining and isometric crystal converting method specifically comprises the following steps that an ultrasonic impact micro forging device and a laser wire fusing additive manufacturing device are coupled, and a composite manner that the laser wire fusing additive manufacturing device is arranged in front and the ultrasonic impact micro forging device is arranged onthe back is adopted for synchronous composite manufacturing; according to the workpiece shape, the path is reasonably planned, related parameters of the ultrasonic impact micro forging device and thelaser wire fusing additive manufacturing device are set, effective compatibility is achieved, and the composite manufacturing process is controlled; and according to path planning and system parameters, layer-by-layer ultrasonic impact micro forging treatment is synchronously conducted in the laser wire fusing process till the titanium alloy component additive manufacturing process is finished. The provided method is used for but not limited to the laser wire fusing deposition additive manufacturing technology and can be widely applied to arc wire fusing, plasma arc wire fusing, electronic beam wire fusing and other additive manufacturing technologies.
Owner:HARBIN ENG UNIV

Method for optimizing cutting path of spacer frame type integral structural member

ActiveCN105069249AShorten the production cycleOptimize cutting pathForecastingSpecial data processing applicationsElement modelManufacturing technology
The invention provides a method for optimizing a cutting path of a spacer frame type integral structural member, belongs to the technical field of design and manufacturing of modern structures, and solves the problem in optimization of the cutting path in a processing process of the spacer frame type integral structural member. The method comprises the following steps of (1) establishing a finite element model for a single spacer frame of the spacer frame type integral structural member, and loading initial internal stress; (2) performing dynamic cutting simulation on the single spacer frame to obtain an optimized cutting path; (3) establishing a finite element model for the spacer frame type integral structural member, and loading initial internal stress; and (4) performing dynamic cutting simulation on the whole spacer frame to obtain an optimal cutting path. According to the method for optimizing the cutting path by adopting dynamic cutting simulation, analysis and prediction can be performed in advance before parts are actually processed, and the cutting path can be optimized, so that a corresponding processing policy is adjusted, processing deformation is effectively controlled, the production cycle of the parts is shortened, and the production cost is reduced.
Owner:BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP

Integral liquid-filling forming method for large annular lip part

ActiveCN110434216ARaise the forming limitHigh dimensional accuracyThinningEngineering
The invention provides an integral liquid-filling forming method for a large annular lip part, belongs to the technical field of aviation aerospace sheet metal forming, and can solve the problem thatlarge annular lip parts are difficult to integrally form. The method comprises the steps of design and manufacturing of a transition forming die and a final forming die, selection and debugging of technological parameters, post-processing and the like. According to the method, a novel technology of multi-step liquid-filling forming is carried out on the basis of guaranteeing integral forming of the lip parts; and the integral forming of the lip parts is realized through a two-sequence liquid filling forming process and a one-sequence shaping process. The method has the advantages of being highin forming limit, high in size precision, good in surface quality, low in cost and the like, and can effectively reduce the problems of uneven deformation, thinning or serious wrinkling in local areas, difficult elimination of resilience and the like in a traditional stamping mode, so that the local defects of the lip are reduced and the advantages are remarkable. Meanwhile, the technology can bepopularized to other parts with similar characteristics, and has good development potential.
Owner:BEIHANG UNIV

Small-dimension British standard deformed steel bar B500B and manufacturing technology thereof

The invention discloses a small-dimension British standard deformed steel bar B500B and a manufacturing technology thereof. The chemical component requirements of the small-dimension British standard deformed steel bar B500B are: C: 0.19-0.22 wt%, Si: 0.20-0.60 wt%, Mn: 0.70-0.90 wt%, Cr: 0.5-0.8%, P, S: less than or equal to 0.035 wt%, Ni, Cu: less than or equal to 0.25 wt%, Mo, Al: less than or equal to 0.10 wt%, and N: less than or equal to 0.011 wt%; the balance is Fe; carbon equivalent Ceq is less than or equal to 0.50%. The technology comprises converter or electric furnace smelting, LF refining or argon blowing refining, CCM bloom or billet continuous casting, bar controlled rolling, and controlled cooling. The component design takes chromium to replace expensive vanadium for alloying, is matched with reasonable-design controlled rolling temperature and air cooling temperature, realizes production of the small-dimension British standard deformed steel bar B500B with qualified performance in low cost, and acquires favorable economical and social benefits.
Owner:NANJING IRON & STEEL CO LTD

Anti-smashing glass bottle and production method thereof

InactiveCN106587605AGood chemical stabilityIncrease surface tensionGlass blowing apparatusGlass tempering apparatusManufacturing technologyBreak the glass
The invention provides a glass bottle and a production method thereof and belongs to the technical field of production of glass bottles. The glass bottle is produced by the following raw materials in parts by weight: smashed glass, sodium carbonate, aluminum oxide, borax, ferroferric oxide, calcium phosphate, zirconium oxide and titanium oxide. The method comprises the following steps: (1) washing the smashed glass, then breaking the glass into granules, freezing and drying the glass granules; (2) continuously ball milling the dried glass granules and other raw materials into powder; (3) drying the powder, putting the powder into a smelting furnace, smelting and uniformly mixing the powder to obtain a mother solution; (4) producing the mother solution into glass bottles with different sizes, naturally cooling the glass bottles till the glass bottles are hardened, and then putting the hardened glass bottles into an annealing furnace; and (5) tempering and then obtaining the finished products. The anti-smashing glass bottle is simple and easily available in raw materials and low in cost; the production method of the glass bottle is simple and feasible in process; meanwhile, the glass bottle has high smashing resistance, so that the sharp sections which cause harm to the human body or animals are not formed even if the glass bottle is broken.
Owner:柳州市昌泉贸易有限公司

Powder cladding additive manufacturing based method for growing complex structure on surface of cast and forged piece

InactiveCN109047760AAvoid gross tissueAvoid concentrated stressAdditive manufacturing apparatusIncreasing energy efficiencyStress concentrationMetal forming
The invention discloses a powder cladding additive manufacturing based method for growing a complex structure on the surface of a cast and forged piece, and belongs to the technical field of metal forming and manufacturing. The method comprises the following steps of: designing a matrix structure part model according to a to-be-manufactured final part and manufacturing the matrix structure part; performing structural design on the surface of the matrix structure part model to obtain a three-dimensional model of the final part; and performing two-dimensional slicing treatment on the three-dimensional model, leading obtained parameters into a 3D printer, and using powder which is the same with the matrix structure part material to perform powder cladding type additive manufacturing on the surface of the matrix structure part through the 3D printer, thereby obtaining the final part. Compared with conventional casting, forging and machining, the method can prevent the cast and forged piecefrom a coarse structure and stress focus, also can avoid a low material utilization rate caused by forged part machining, and does not need to manufacture a dear powder metallurgic mould; and meanwhile, compared with pure 3D printing, the method is higher in production efficiency and is high in product qualification rate.
Owner:CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD

4d printing method for in-situ regulation of functional properties of nickel-titanium alloy and use thereof

The present invention belongs to the field of additive manufacturing technology, and discloses a 4D printing method capable of in-situ regulating functional properties of nickel-titanium (NiTi) alloys and the application thereof. The method comprises the following steps: subjecting NiTi alloy bars to atomization milling to obtain NiTi alloy powder with a particle size of 15-53 μm, placing the NiTi alloy powder in a discharge plasma assisted ball mill for discharge treatment to promote the activation of powder activity, then adding nano-sized Ni powder with a particle size of 100-800 nm to obtain mixed powder, then continuing the discharge treatment to realize the metallurgical bonding between the NiTi alloy powder and the nano-sized Ni powder to obtain the modified powder, and finally using the additive manufacturing technology to prepare and form the modified powder into a functionalized NiTi alloy. The present invention achieves the metallurgical bonding between the nano-sized Ni powder and the large-sized spherical NiTi alloy powder by adding the nano-sized Ni powder in the process of discharge treatment, which is conducive to preparing a bulk alloy with uniform composition, structure and properties and the parts made therewith.
Owner:SOUTH CHINA UNIV OF TECH +2

Preparation method of hollow tube micro-lattice structure ceramic material

ActiveCN111646804AReduce adverse effectsEasy to controlAdditive manufacturing apparatusAdditive manufacturing with liquidsMolten stateManufacturing technology
The invention provides a preparation method of a ceramic material with a hollow tube micro-lattice structure. The method comprises the following steps: 1, preparing raw materials; enabling the modified ceramic precursor in the molten state to pass through a direct writing forming device; preparing a ceramic material with a three-dimensional lattice structure, printing in a protective atmosphere toobtain a rough blank with a three-dimensional lattice structure, carrying out incomplete cross-linking reaction on the rough blank with the three-dimensional lattice structure in a cross-linking atmosphere to obtain an incomplete cross-linked blank; and removing uncross-linked parts in the blank to obtain a hollow tube micro-lattice precursor bracket, and carrying out pyrolysis to obtain the hollow tube micro-lattice structure ceramic material. The ceramic material with a unique structure is obtained by combining an additive manufacturing technology with subsequent heat treatment, so that thedefects of high manufacturing cost and complex process of the conventional hollow tube micro-lattice material are overcome, and the thickness of the tube wall is regulated and controlled between 1 micron and 100 microns. The low density of the material is ensured, the high strength, high hardness, excellent chemical stability and thermal stability of the ceramic are maintained, and the ceramic sample piece with various structures and complex shapes is obtained.
Owner:CENT SOUTH UNIV

Solid beverage capable of relaxing bowels and production method thereof

The invention relates to a solid beverage capable of relaxing the bowels and a production method thereof and belongs to the technical field of solid beverage production. The solid beverage is producedby, by weight, 3-7 parts of hawthorn, 1-5 parts of semen cassiae, 1-3 parts of moringa oleifera leaves and 0.5-2 parts of radix glycyrrhizae. The solid beverage capable of relaxing the bowels and improving sleep is reasonable in recipe and compatibility, capable of bringing the treatment effect and nourishing effect of the raw medicinal materials into full play, free of artificial pigments and preservatives, simple in preparation method, capable of effectively improving constipation, safe and free of toxic and side effects, and trial use shows that the solid beverage is good in bowls relaxingeffect.
Owner:SHANXI UNIV OF CHINESE MEDICINE

Water storage tank circular seam structure and manufacturing method thereof

ActiveCN109945155AReduce consumptionReduce the positive deviation of wall thicknessSteam boilersSteam boilers componentsManufacturing technologyPower station
The invention discloses a water storage tank circular seam structure and a manufacturing method thereof, and relates to the technical fields of high-capacity power station boiler water storage tank designing and manufacturing. The problems that an existing water storage tank circular seam structure is single in manufacturing method and lag in manufacturing technology, thus, a manufactured water storage tank is large in wall thickness margin, serious in inner surface wall thickness decreasing, discontinuous in structure and poor in machining quality are solved. According to the water storage tank circular seam structure, a water storage tank comprises two sealing heads and a plurality of barrel sections, all the barrel sections are sequentially spliced into a barrel body along the axes of the barrel sections, the two sealing heads are arranged at the two ends of the barrel body correspondingly, the ovality of the barrel body and the sealing heads is +/-0.6mm, and the thickness deviationbetween the barrel body and the sealing heads is 0-2mm; and a butt-joint circular seam groove is formed between every two adjacent barrel sections, a butt-joint circular seam groove is formed betweeneach sealing head and the corresponding barrel section adjacent to the sealing head, and the butt-joint circular seam grooves are connected through a welding mode. The manufacturing method is used for manufacturing of the water storage tank circular seam structure.
Owner:HARBIN BOILER

Manufacturing method for carbon fiber forming mold capable of controlling heating temperature

InactiveCN110238997AGuarantee molding qualityIncrease productivityFiberManufacturing technology
The invention relates to the technical field of mold manufacturing, and discloses a manufacturing method for a carbon fiber forming mold capable of controlling the heating temperature. The manufacturing method comprises the following steps that 1, a mold body is manufactured; and the step 1 comprises the sub-steps that a, foam models of a corresponding female mold and a mold sleeve are machined and manufactured according to a drawing of the mold needing to be manufactured; b, the female mold obtained in the step a is fixed to the center of the mold sleeve obtained in the step a, and an overall mold cavity for manufacturing the mold is obtained; and c, the interior of the mold cavity is coated with a material protecting layer firstly, standing and curing are conducted, and when the mold is in a high-temperature working state, hot deformation of the surface material bears influences of a supporting portion. The manufacturing method for the carbon fiber forming mold capable of controlling the heating temperature has the advantages that light weight of mold production is achieved, the overall manufacturing process is fast and convenient to operate, the mold production efficiency is improved, and the quality and the service life of the mold are guaranteed.
Owner:SHENYANG WANLONG WEIYE MASCH MFG CO LTD
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