6results about How to "Good brazing" patented technology

The invention discloses a vacuum arc-extinguishing chamber copper-clad steel composite conducting rod, a method and a vacuum arc-extinguishing chamber. The composite conducting rod comprises a supporting rod and a conducting layer. The conductive layer wraps the outer surface of the supporting rod, and the supporting rod and the conductive layer are of an integrated structure to form a composite conductive rod; the conductive layer is made of an oxygen-free copper material; the supporting rod is used for enhancing the overall mechanical performance of the conducting rod. One end of the composite conducting rod is fixedly connected with the static end electrode or the moving end electrode; and the other end of the composite conducting rod is fixedly connected with an insulating pull rod or a circuit breaker. The integral conducting rod is formed by compounding high-strength metal materials such as oxygen-free copper and stainless steel, the mechanical strength of the inner material and the outer material is enhanced, the requirements for high conductivity and high mechanical strength are met, the conducting rod is machined at a time, acid pickling is conducted, assembling is simple in production, welding reliability is high, and cost is low. And the problem that the stainless steel core is desoldered or fractured when the existing structure is used can be effectively solved.

The utility model discloses an automobile radiator core braze welding clamp, which comprises a bearing plate, a rotating mechanism, first clamping mechanisms and a second clamping mechanism, the bearing plate is arranged on the rotating mechanism, the rotating mechanism is arranged in a case, the two transverse ends of the bearing plate are provided with accommodating grooves, the first clamping mechanisms are arranged in the two accommodating grooves, and the second clamping mechanisms are arranged in the accommodating grooves. Second clamping mechanisms are arranged at the two longitudinal ends of the bearing plate; through the arrangement of the first clamping mechanism and the second clamping mechanism, the clamp can clamp automobile radiator core bodies with different sizes, so that the application range is widened, and the production cost is reduced.

The application discloses an L-wave standing wave deflection cavity for low-energy electron beam bunch length measurement and relates to the technical field of electron beam bunch measurement. The application discloses an L-wave standing wave deflection cavity for low-energy electron beam bunch length measurement and relates to the technical field of electron beam bunch measurement. The cavity chain comprises end cavity one, intermediate cavity and end cavity two, the waveguide is arranged on the intermediate cavity through the transition plate, arc-shaped matching grooves are symmetrically arranged at both ends of the transition plate along the axial direction close to one side of the intermediate cavity, the arc-shaped matching grooves are matched with the outer shaft surface of the end cavity one or the end cavity two at the corresponding end, and the slot processing of the end cavity one and the end cavity two is reduced. On one hand, the slotting workload during installation of the deflection cavity is reduced, and the machining efficiency is improved; on the other hand, the combined surface of the waveguide coupler is more fitted, and the brazing is facilitated.

The invention discloses a welding method of an elastic metal-plastic tile, belongs to the technical field of elastic metal-plastic tiles, and aims to solve the problems that the conventional welding method has the defects of high heat sensitivity, poor compatibility and the like and is difficult to meet the requirements of the conventional welding method. The method comprises a pretreatment step, namely fixing an elastic metal plastic tile and cleaning the surface of a base material; brazing filler metal is prepared, and low-melting-point brazing filler metal alloy containing active elements is selected; accurate temperature control heating is adopted, and a non-contact heating technology is adopted to ensure that the brazing filler metal is rapidly and uniformly melted and heat damage is minimized; the brazing process is optimized, welding seams are filled through the capillary action under vacuum or inert gas protection, and chemical bonding is promoted; and cooling solidification is conducted, the welding stress and deformation are reduced in a rapid cooling mode, and the welding quality is ensured.

To provide a cooling device for a power device that can be assembled easily with fewer parts, and that has a high heat exchanger performance. The cooling device comprises: a first casing member 10 as a plate member, a second casing member 20 as a frame member having a predetermined thickness, and a finned heat receiving plate 30 having a heat receiving surface 31a joined to an exothermic body, each of which are made of aluminum material. A coolant inlet 11 and a coolant outlet 12 are formed in the first casing member at positions to be opposed to each other. The second casing member has a thickness possible to prevent warpage thereof by a heat when joining an exothermic body, and in the second casing member, an inlet side coolant guide 21 communicated with the coolant inlet and an outlet side coolant guide 22 communicated with the coolant outlet are formed at positions to be opposed to each other. The finned heat receiving plate comprises fins 34 formed integrally on an inner surface of the heat receiving plate within a region corresponding to a coolant space 23, and each clearance between the adjoining fins serves as a flow passage 33. The first casing member, the second casing member, and the finned heat receiving plate are joined to one another, and the fins are also joined to the first casing member.

The invention relates to the field of steel frame welding structures, in particular to a shipbuilding steel frame welding device which comprises pressure dividing plates, rotating frame plates are fixedly mounted on the upper surfaces of the two pressure dividing plates correspondingly, servo motors are mounted on the rotating frame plates through frame mechanisms, and nuts are mounted on the rotating frame plates through replacement mechanisms. A side plate is mounted on the rotating frame plate through a frame fixing mechanism, an L-shaped plate is mounted on the side plate through a transverse moving mechanism, a brazing gun is mounted on the L-shaped plate through a vertical moving mechanism, a second push plate is mounted on the inner sides of the two pressure dividing plates through a pushing mechanism, and a first push plate is mounted on the rotating frame plate through a side pushing mechanism. Replaceable arc-shaped abutting pieces of different models are replaced through threaded connectors by rotating nuts, so that steel plates are attached to the replaceable arc-shaped abutting pieces, ship decks of different models can be assembled, and through pushing and extruding of the first push plate, the abutting pieces and the second push plate 34, the steel plates are tighter, and brazing is facilitated.