10 results about "Hydraulic press" patented technology

The invention discloses a method for crimping a high-pressure cross-linking three-layer co-extrusion continuous produced disc-exchanging conductor. The method specifically comprises the following steps: forming head and tail connecting sections with the outer diameter being less than the compressing outer diameter of a conductor after removing layers from a head end of one coil of conductor and a tail end of the other coil of conductor; preparing an iron pipe with the outer diameter being approximate to the compressing outer diameter of the conductor and with the inner diameter slightly being more than the outer diameter of the connecting sections, according to the compressing outer diameter of the conductor; inserting the head connecting section of one coil of conductor and the tail connecting section of the other coil of conductor into inner holes at two ends of a steel pipe; placing into a cavity of a 10-ton hydraulic press and crimping the iron pipe; and crimping the surface of the iron pipe for ten times, thereby causing the conductor therein to be in close contact with an inner wall of the iron pipe. According to the method provided by the invention, the cold pressing welding is applied to the disc-exchanging and connecting of the high-pressure cross-linking three-layer co-extrusion conductor; only an iron crimping pipe and a manual hydraulic mould which are conveniently taken are selected and used; the iron crimping pipe is connected with two ends; compared with a resistance butt-welding connecting method, the method has the advantages that the operation is simple and the success rate is higher; and the once investment in equipment according to the method is reduced by above 30% of the once investment in equipment according to a resistance butt-welding scheme.

The invention provides a three-dimensional bi-continuous porous-carbon-based transition metal porous material and a preparation method thereof. The porous material comprises porous carbon and a three-dimensional bi-continuous transition metal porous material. The preparation method comprises the following steps of pickling zinc powder to remove an oxide film, fine-grinding and screening through aball mill, washing and drying to obtain micron-millimeter-level zinc powder; mixing and grinding the zinc powder and the transition metal powder to obtain zinc-containing transition metal alloy powder, spreading a layer of porous carbon powder on the middle part of the zinc-containing transition metal alloy powder layer, and rolling by a hydraulic press under a room-temperature condition to obtainporous carbon intercalated transition metal/zinc alloy of a sheet layer; and putting the porous carbon intercalated transition metal/zinc alloy of the sheet layer in a vacuum heating system, and evaporating zinc by heating at the high temperature, thereby obtaining the three-dimensional bi-continuous porous-carbon-based transition metal porous material. The three-dimensional bi-continuous porous-carbon-based transition metal porous material adopts room-temperature rolling and vacuum heating to control hole diameters and distribution of holes, has a great specific surface area and high heat conductivity and electrical conductivity, and is wide in range of application.

The invention discloses full-automatic production line equipment for a turnout iron base plate bottom plate, and mainly relates to the technical field of mechanical equipment. The equipment comprises an automatic strip steel feeding device, a hydraulic pressing and cutting device, a before-drilling conveying device, a numerical control drilling and milling machine, an after-drilling conveying device and an automatic bottom plate discharging device. The automatic strip steel feeding device comprises a strip steel conveying roller set and a feeding rack. The hydraulic pressing and cutting device is arranged between the strip steel conveying roller set and the before-drilling conveying device. The numerical control drilling and milling machine is arranged between the before-drilling conveying device and the after-drilling conveying device. The equipment has the beneficial effects that the machining and conveying processes from strip steel to finished turnout iron base plate bottom plates can be fully automatically and efficiently completed, the total occupied area of the equipment is small after multiple procedures are integrated, the automation degree is greatly improved, the labor intensity of workers is reduced, the labor cost is saved, and potential safety hazards of workshops are eliminated.