45results about How to "High molding pressure" patented technology

The invention relates to a continuous fiber reinforced thermoplastic resin melt impregnation 3D printing device and a method, wherein thermoplastic resin is used as a matrix, and continuous glass fiber or carbon fiber is used as a reinforcement. The 3D printing device comprises an extruder, an unwinding roller, a pre-tensioning roller, an infrared radiation device, a gas-assisted swinging device,a wire wetting mold, a cooling device and a 3D printer. A continuous fiber bundle is firstly pre-dispersed by the pre-tensioning roller, the upper surface and the lower surface of the continuous fiberare pre-heated by the infrared radiation device, the pre-heated continuous fiber is unfolded to a certain width under the action of the gas-assisted swinging device, then the pre-heated continuous fiber enters the wire wetting mold, the wetting process of the resin matrix on the fiber bundle is completed under the action of a wave-shaped runner, the fiber bundle is conveyed forwards by the traction of an inner traction roller and passes through a circular shaping die to form continuous fiber prepreg filaments which can be used for 3D printing, and cooling, feeding and printing are carried outto finally obtain the 3D printed product of the continuous fiber reinforced thermoplastic composite material. According to the device and the method, uniform dispersion and full impregnation of the continuous fiber in the resin matrix can be realized, the 3D printing continuous fiber reinforced thermoplastic composite material product with good interface bonding and excellent performance can be prepared, and meanwhile real-time integrated forming of continuous fiber consumables and the 3D printing composite material product can be realized.

To provide the manufacturing method for the friction material products which does not require the special molding die and realizes the significant simplification of the molding step while maintaining the quality of the friction material. The manufacturing method for the friction material products comprising the molding step of pressurizing and heating to mold the molding material made of the raw friction material within the molding die, wherein the molding temperature in the molding step is 190° C.-230° C. and the pressure thereof is 100 MPa-200 MPa.

The compression molded tooth used for practicing dental cutting treatment of the present invention comprises a composition containing a powder or powders of saccharide, polysaccharide, protein, and/or glycoprotein each having a particle size of 1 to 100 μm.

The present invention includes composition and methods for the fabrication of very-high-aspect-ratio structures from metallic glasses. The present invention provides a method for nondestructive demolding of templates after thermoplastic molding of metallic glass features.

The invention discloses a 3D printing nozzle and a forming method of a liquid crystal polymer film. The 3D printing nozzle comprises a shell and further comprises an inner core. The inner core is located in the shell. The central axis of the inner core coincides with the central axis of the shell. The inner core is rotatably arranged relative to the shell. The inner core of the spray nozzle is rotatably arranged relative to the shell. When a melt is subjected to mixing and plastifying, the forming pressing can be increased, and a raw material is transformed well from zero dimension to three dimension. When the liquid crystal polymer film is formed through the spray nozzle, the problem of orientation of the liquid crystal polymer film on a 2D plane can be improved remarkably, and the mechanical properties of the obtained liquid crystal polymer film in all directions are equivalent.

The invention relates to a wall body material, in particular to a pulverized fuel ash brick used in cold areas. The brick uses sands, carbide slag, pulverized fuel ashes and cement as raw materials which have weight percentage as follows: 25 to 40 percent of sand, 10 to 20 percent of carbide slag, 35 to 50 percent of pulverized fuel ashes and 8 to 12 percent of cement. The invention utilizes the large amount of pulverized fuel ashes exhausted from power plants as the major raw material used for producing the product, thus protecting environment, saving land which is used for a plant storing the pulverized fuel ashes in a power plant, meeting the industrial policy of energy saving and exhaust reducing of China, providing a novel wall body material for building market, canceling sintering of clay red bricks and making contribution to saving land resources. The pulverized fuel ash brick used in the cold areas of the invention is different from sintering-free bricks and autoclaved bricks, has the advantages of large forming pressure and good anti-freezing ability, is applicable to be used in the cold areas, and is characterized by good anti-freezing capacity (25 times higher than the national standard) and good insulation capacity and thermal conductivity thereof is less than the traditional clay red bricks and other solid bricks.

A coil component is constituted by a composite magnetic material containing alloy grains whose oxygen atom concentration in their surfaces is 50 percent or less, and resin, and also by a coil. The coil component using the composite magnetic material does not require high pressure when formed.

A method of manufacturing a sprocket segment that is formed by forging as one of a plurality of circumferentially divided parts of a sprocket having a plurality of teeth arranged on an outer peripheral surface of a circular flange, the method includes: forming a material of the sprocket segment into an initial formed state in an initial forming step; and subjecting the sprocket segment in dies to a finish forming process with a tooth trace direction of the sprocket segment as viewed in cross-section of the sprocket segment being inclined relative to a forging direction of the dies in a finish forming step.

The invention discloses a method for improving a Seebeck coefficient of a carbon fiber cement-based composite material. Carbon fibers are subjected to acid treatment in the preparation process of the cement-based composite material and then molded through dry mixing and dry pressing modes. The acid treatment process of the carbon fibers is simple, the specific surface area of the carbon fibers subjected to acid treatment is relatively high, and the contact area between the carbon fibers and a cement matrix can be greatly improved, so that the Seebeck coefficient of the cement-based composite material is significantly improved, and the problem that the composite material is low in thermoelectric property due to use of the carbon fibers which are not subjected to acid treatment is solved. Bromine intercalating process treatment does not need to be carried out on the carbon fibers, so that the problem of environment pollution of bromine vapor is solved. By adopting a dry mixing and dry pressing molding technology, the additive amount of the carbon fibers on the cement matrix can be significantly improved, meanwhile, the carbon fibers can be uniformly dispersed into the cement matrix and the molding pressure intensity is relatively high, so that the thermoelectric property of the composite material is improved, and the problem of relatively low thermoelectric property of the cement-based composite material caused by casting molding is solved.

The present invention relates to an elliptical unit block for preparing a core using soft magnetic metal powder and a core with excellent high current DC bias characteristics using the same, and more specifically, to an elliptical unit block for preparing a core using soft magnetic metal powder used in an inductor for an automotive electronic sub-assembly using a high current buck or boost inductor or a three phase line reactor or fuel cell system for power factor correction (PFC), and a powered magnetic core prepared using the same.

The present invention is a molded stator including a stator and a substrate. The molded stator includes: a donut-shaped lead-wire wiring component that wires power-supply lead wires to a winding wire of the stator and that wires sensor lead wires to the position detection circuit; a lead-out component that leads out the power-supply lead wires and the sensor lead wires to outside of the molded stator; a power-supply lead-wire holding component that holds the power-supply lead wires; and a sensor-lead-wire holding component that holds the sensor lead wires. The lead-out component is connected to a latching part that latches the sensor-lead-wire holding component and includes projections as plane parts that are substantially perpendicular to a radial direction of the stator on the radially outer side.