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

A high-strength thermally-isolating surface-mounted anchoring system for a cavity wall is disclosed. The thermally-isolated anchoring system is adaptable to varied structures, including high-span applications, and for use with interlocking veneer ties and reinforcement wires. The anchoring system includes an anchor base and a stepped cylinder which sheaths the mounting hardware to limit insulation tearing and resultant loss of insulation integrity. The anchoring system is thermally-isolated through the use of a series of strategically placed compressible nonconductive fittings. Seals are formed which preclude penetration of air, moisture, and water vapor into the wall structure.

The present invention is production process of high strength self-sealing composite aluminum-plastic pipe union. The production process includes producing main pipe union body and auxiliary parts, and has the specific steps of: 1. selecting stainless steel for producing pipe union; 2. machining at least one external thread on the main pipe union body, forming conic sealing stage of 3-7 deg cone apex angle, and forming end port with outer diameter greater than the inner diameter by up to 1.5 mm and height between the inner diameter and the outer diameter of the composite pipe; and 3. machining one locking stage comprising inner conic surface and outer conic surface on one end of the locking nut, with the locking stage possessing inner surface of the same cone apex angle as the outer surface of the sealing stage.

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.

The invention discloses a titanium alloy diffusion bonding method assisted by ultrasonic impact surface modification, which involves ultrasonic impacting the surface of a titanium alloy plate, and then heating and diffusing the titanium alloy plate, so that the joints can be tightly bonded and the high-strength connection of the titanium alloy itself is realized. The invention adopts the method for obtaining the crystal grain refinement layer through ultrasonic shock surface modification, increases the atomic diffusion rate and reduces the titanium alloy diffusion connection parameters, and realizes the low temperature diffusion connection of the titanium alloy. The method is easy to operate, has good adaptability, high repeatability, is green and energy-saving, and can greatly improve industrial production efficiency.

The invention discloses a silicon carbide joint and a metal penetration connection method thereof. The metal penetration connection method includes the following steps: S1, preparing a first metal raw material and a second metal raw material to form a connecting material; S2, disposing the connecting material in a Between the connection surfaces of the two silicon carbide pieces, a sandwich structure is formed with the two silicon carbide pieces; S3, the sandwich structure is placed in a sintering environment with a metal phase and sintered; during the sintering process, the metal phase infiltrates into the connecting material and fill in the pores generated in the connecting material; S4, after sintering, the connecting material is densified to form a connecting layer, and two silicon carbide parts are connected to form a silicon carbide joint. The metal infiltration connection method of the silicon carbide joint of the present invention penetrates into the connecting material with the metal phase, realizes the densification of the connecting material, obtains a high-strength connection and a silicon carbide joint with good air tightness, and reduces the requirements on the shape and structure of silicon carbide. .

The invention discloses a diffusion welding method of titanium or titanium alloy and stainless steel. A plate pack having the same material quality with welded workpieces is welded into a block structure in advance. The plate pack is lengthways cut into slices along the block structure to form a structural middle layer 7. The middle layer is processed and then vertically arranged between the welded workpieces for diffusion welding. Because the middle layer having the same material quality with the workpiece is adopted, a joint heterogeneous interface combination mode is changed into a combination mode that half heterogeneous workpieces are directly combined and half heterogeneous workpieces are combined, and the titanium or titanium alloy and stainless steel workpieces are in high-intensity connection. In the diffusion welding method, the tensile strength of the joint is improved to above 80% from 50-70%(week side workpiece intensity) obtained by the direct diffusion welding technology, and various types of titanium or titanium alloy and stainless steel can be in high-intensity connection.

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.