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31results about How to "High strength connection" patented technology

The design of laminated composite interlayers introduces a method for joining magnesium alloys to aluminum alloys

The invention provides a method for introducing the design of laminated compound interlayers to enable magnesium alloy and aluminium alloy to be connected. The method comprises the steps that first, CuNi alloy thin films are deposited on the surface of the magnesium alloy and the surface of the aluminium alloy to be used as obstructing interlayers for preventing surface oxidation of aluminium and magnesium matrixes and intermetallic compound generation; then Ag is added between CuNi alloy thin film layers to lower the connecting temperature of a CuNi interlayer, and a CuNi-Ag-CuNi laminated compound interlayer is formed; and then a to-be-connected magnesium alloy piece and a to-be-connected aluminium alloy piece of the compound interlayer are assembled and are subjected to heat preservation for 0-750 s at the temperature of 380-420 DEG C. According to the method, the compound interlayer avoids the generation of Mg-Al-based intermetallic compounds with connecting interface brittleness and other intermetallic compounds; an electric field activation connecting technology is adopted, so that quick low-temperature and high-strength welding of the magnesium alloy and the aluminium alloy is achieved under vacuum, the connecting temperature is lowered, the connecting technology cycle is shortened, and the reliability of connecting joints is improved.
Owner:WUHAN UNIV OF TECH

Transient liquid phase infiltration repair method for large gap defects in superalloy hot end parts

The invention relates to the field of high temperature alloy hot end part repairing, in particular to a high temperature alloy hot end part large gap defect transient state liquid phase infiltration repairing method. The method includes (1) removing an oxide layer and the like on the surface of a defect of a high temperature alloy hot end part to enable the defect position to have metal luster; (2) adopting nickel-base or cobalt-base alloy powder to fill the defect space, conducting molding in a plasticizing mode and then conducting high temperature sintering; (3) arranging the nickel-base alloy powder subjected to B Zr or Hf activating treatment above filling metal, conducting high temperature transient state liquid phase infiltration to achieve compacting; (4) conducting polishing and clearing; (5) conducting homogenizing treatment on the high temperature alloy hot end part under high temperature. The method can solve the problem that Al+Ti high temperature alloy hot end part is low in large gap defect repairing strength and easy to scrape, achieves high strength connection, is high in repairing yield and can overcome large gap defects such as crack, ablation holes and corrosion pits of hot end parts of aero engines, electric gas turbines, naval vessel gas turbines and caused in a service use process.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

18650 lithium ion battery pack structure

The invention provides a 18650 lithium ion battery pack structure, which includes: lithium ion battery individuals, a bottom plate, a side plate, a pressure plate, a cover plate, an electrical connector fixing plate, an elastic plate, an electrical connector, a guide bar, and a grounding device, and is characterized in that the positive electrodes of all the lithium ion battery individuals have the same orientation so as to contribute to modular expansion; the lithium ion battery individuals are directly bonded in the sleeve-type bottom plate so as to achieve rapid heat transfer; sufficient gaps are arranged between the lithium ion battery individuals to release the stress generated during the cyclic process of the lithium ion battery individuals; the elastic plate is arranged between thelithium ion battery individuals and the pressure plate; by adjusting the amount of deformation of the elastic plate, the lithium ion battery individuals and the bottom plate can be tightly connected;the high-resistance grounding device can release the charges accumulated in the battery pack structure. The structure provided by the invention has high specific energy, good thermal conductivity, high structural strength, and good safety and reliability, and is suitable for the field of small satellites.
Owner:SHANGHAI INST OF SPACE POWER SOURCES

Ultra-fragile double-sided adhesive tape for gift box packaging and preparation method thereof

The invention relates to the technical field of double-sided adhesive tapes, and discloses an ultra-fragile double-sided adhesive tape for gift box packaging. The ultra-fragile double-sided adhesive tape sequentially comprises a first release film layer, a first adhesive layer, a base layer, a second adhesive layer and a second release film layer from top to bottom. According to the ultra-fragile double-sided adhesive tape for gift box packaging and the preparation method thereof, the double-sided adhesive tape can be conveniently broken at equal intervals through the easy-to-tear gaps in the base layer so that the situations that the double-sided adhesive tape is not easy to tear off and broken openings are not aligned in the pasting process are avoided, and the first adhesive layer and the second adhesive layer are adhered more tightly; the situation that the first adhesive layer or the second adhesive layer is separated from the base layer and is not firmly adhered is avoided, the effects of simplicity, convenience in use and high-strength connection are achieved, meanwhile, the ultra-fragile double-sided adhesive tape is simple in preparation step and high in processing efficiency so that the processing period is greatly shortened, the production efficiency is improved, and the ultra-fragile double-sided adhesive tape is convenient to popularize.
Owner:SHENZHEN LICHANGSHI ADHESIVE PROD

Device and packaging method for end sealing of deformable metal foil structure

InactiveCN108655526BSolving Sealed Connection ProblemsImprove sealingSoldering apparatusThin metalMetal foil
The invention provides a device and method for sealing the end part of a deformable metal foil material structure, and belongs to the field of precise connection of deformable ultra-thin metal structures, and particularly relates to a sealing device and a sealing method for the end part of a deformable metal foil material structure. The invention aims to solve the problem that the deformable metalfoil material structure and a flange cannot be reliably connected. The device for sealing the end part of the deformable metal foil material structure comprises a high-elasticity metal foil material,a lock catch, a flange plate and a plurality of positioning pieces. The sealing method comprises the following steps: 1, a high-elasticity thin-wall metal ring is formed; 2, the high-elasticity thin-wall metal ring is horizontally placed; 3, the end part of the deformable ultra-thin metal foil material structure is supported into a circle; and 4, the deformable metal foil material structure is arranged on a flange plate, and keeps warm in a nitrogen atmosphere in a heat treatment furnace and is cooled to the room temperature along with the furnace, so that the deformable ultra-thin metal foil material structure with the sealed end is obtained. The device is mainly used for sealing the end part of the deformable metal foil material structure.
Owner:ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY

A kind of pipeline quick connection structure and its assembly and disassembly method

The invention provides a quick pipeline connecting structure and a mounting and dismounting method, and belongs to the field of pipelines. The problem that existing pipeline connecting is low in strength and poor in sealing performance is solved. The quick pipeline connecting structure comprises an upper pipeline, a lower pipeline and a connecting device. The connecting device comprises an upper connecting component connected with the upper pipeline, and a lower connecting component connected with the lower pipeline. The upper connecting component comprises an upper quick connecting pipe, an upper connecting pipe and an upper connecting plate. The upper connecting component further comprises an upper fastener penetrating through the upper connecting pipe and the upper pipeline to be fixed.The lower connecting component comprises a lower quick connecting pipe, a lower connecting pipe and a lower connecting plate, and further comprises a lower fastener penetrating through the lower connecting pipe and the lower pipeline to be fixed. A circular-ring-shaped upper baffle ring is fixed to the outer wall of the bottom end of the upper quick connecting pipe coaxially. A circular-ring-shaped lower baffle ring is fixed to the inner wall of the top end of the lower quick connecting pipe coaxially. The quick pipeline connecting structure further comprises an adjusting pipe sleeving the outer side of the upper quick connecting pipe, the inner diameter of the upper quick connecting pipe is the same as the outer diameter of the lower quick connecting pipe, and a circular-ring-shaped sealing pad is fixed to the top end of the lower baffle ring. The connecting structure can be used for connecting pipelines in a high strength and high sealing performance manner.
Owner:ZHEJIANG BANNINGER PIPING SYST LTD

Quick pipeline connecting structure and mounting and dismounting method

The invention provides a quick pipeline connecting structure and a mounting and dismounting method, and belongs to the field of pipelines. The problem that existing pipeline connecting is low in strength and poor in sealing performance is solved. The quick pipeline connecting structure comprises an upper pipeline, a lower pipeline and a connecting device. The connecting device comprises an upper connecting component connected with the upper pipeline, and a lower connecting component connected with the lower pipeline. The upper connecting component comprises an upper quick connecting pipe, an upper connecting pipe and an upper connecting plate. The upper connecting component further comprises an upper fastener penetrating through the upper connecting pipe and the upper pipeline to be fixed.The lower connecting component comprises a lower quick connecting pipe, a lower connecting pipe and a lower connecting plate, and further comprises a lower fastener penetrating through the lower connecting pipe and the lower pipeline to be fixed. A circular-ring-shaped upper baffle ring is fixed to the outer wall of the bottom end of the upper quick connecting pipe coaxially. A circular-ring-shaped lower baffle ring is fixed to the inner wall of the top end of the lower quick connecting pipe coaxially. The quick pipeline connecting structure further comprises an adjusting pipe sleeving the outer side of the upper quick connecting pipe, the inner diameter of the upper quick connecting pipe is the same as the outer diameter of the lower quick connecting pipe, and a circular-ring-shaped sealing pad is fixed to the top end of the lower baffle ring. The connecting structure can be used for connecting pipelines in a high strength and high sealing performance manner.
Owner:ZHEJIANG BANNINGER PIPING SYST LTD

Silicon carbide joint and metal penetration connection method thereof

ActiveCN114031415AReduction of requirements for shape structure, etc.High-strength connectionCarbide siliconAir tightness
The invention discloses a silicon carbide joint and a metal penetration connection method thereof. The metal penetration connection method comprises the following steps that: S1, preparing a first metal raw material and a second metal raw material are prepared to form a connection material; S2, the connecting material is arranged between the connecting faces of two silicon carbide parts, and the connecting material and the two silicon carbide parts form a sandwich structure; S3, the sandwich structure is placed in a sintering environment with a metal phase and sintered; and in the sintering process, the metal phase permeates into the connecting material and fills air holes generated in the connecting material; and S4, after sintering, the connecting material is densified to form a connecting layer, and the two silicon carbide parts are connected to form the silicon carbide joint. According to the metal permeation connection method of the silicon carbide joint, the metal phase permeates into the connection material, densification of the connection material is achieved, the silicon carbide joint with high-strength connection and good air tightness is obtained, and the requirements for the shape structure and the like of silicon carbide are lowered.
Owner:CHINA NUCLEAR POWER TECH RES INST CO LTD +2

Integrated preparation process of foamed cement sandwich color steel plate

The invention discloses an integrated preparation process of a foamed cement sandwich color steel plate, and belongs to the technical field of color steel plate preparation. The color steel plate is used as a template, a plurality of self-adhesive capsules are adsorbed on the surface of the color steel plate by utilizing a magnetic field, then a mold is matched for foaming to obtain a cement sandwich, and the self-adhesive capsules are reserved on the surface of the cement sandwich; in the later steam curing process, the self-adhesive capsules are heated and opened, meanwhile, air between the cement sandwich and the color steel plate is heated and expanded to jack up the color steel plate to form a gap, tentacles extend out under the action of the magnetic field to be close to the color steel plate subjected to corona treatment, and the tentacles are combined with pits in the surface of the color steel plate; and meanwhile, the extrusion releases a binder to fill the gap, then the high strength connection between the color steel plate and the cement sandwich is realized under heavy pressure after cooling, compared with the prior art, the foamed cement sandwich and the color steel plate can be integrally prepared, and the foamed cement sandwich and the color steel plate are high in bonding strength and not easy to separate.
Owner:佛山市勇旺达建材有限公司
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