34results about How to "Small quality deviation" patented technology

An iron-based mixed powder for powder metallurgy, the powder is composed of pulverized iron powder adhered to the surface by partially alloying copper powder and preferably pulverized pure iron powder, at least graphite powder and free A lubricant for fixing graphite powder and machinability-improving powder on the surface of an iron-based powder with a binder, the iron-based powder having a particle size distribution of 18.5% by mass of particles having a particle diameter of less than 45 μm relative to the total amount of the iron-based powder Less than 46% by mass of particles with a particle size of 75 μm or more and less than 150 μm; less than 10% by mass of particles with a particle size of 150 μm or more and less than 180 μm; 0.5% by mass of particles with a particle size of 180 μm or more. By making such a powder, it is possible to obtain an iron-based powder mixed powder for powder metallurgy with good compressibility and good filling properties.

The invention relates to a pump rotor (26) for a canned motor pump. The pump rotor (26) comprises a base body (32) designed in one piece, with an impeller base disk (34) and a rotor holder bushing (36) and a rotor unit (40) with rotor magnets that are arranged on the rotor holder bushing (36).

Disclosed are a texture etching solution composition for a crystalline silicon wafer, and a texture etching method using the same. The texture etching solution composition for a crystalline silicon wafer includes a polymer formed by polymerizing a monomer that is substituted with a cyclic compound having 4 to 10 carbon atoms as well as at least one nitrogen atom. The texture etching solution composition and the texture etching method are capable of forming pyramids with a specific structure which can minimize a quality deviation of a texture within a region in formation of a micro-pyramid structure on the surface of the crystalline silicon wafer to increase luminous efficiency while reducing a reflectivity.

An adhesive composition which contains an adhesive component comprising a thermoplastic resin, a radical-polymerizable compound, and a radical polymerization initiator, wherein the adhesive component exhibits a signal in the ESR measurement at 25 DEG C.

PROBLEM TO BE SOLVED: To improve the productivity of printed circuit boards by each performing highly accurate compensation on various defects generated in an actual manufacturing. ŽSOLUTION: An optical appearance inspection device 13 measures the line width of a wiring pattern using a line width measurement algorithm over the entire region of a printed circuit board after the wiring pattern is formed. Then, the optical appearance inspection device 13 prepares a line width histogram in the unit of a region 22 and further prepares a line width distribution by comparing the prepared line width histogram with the line width histogram of a master image data in the same region 22. Information management system 14 prepares a compensated data based on an average of the line width distribution prepared in a predetermined number of printed circuit boards. A stepper 12 performs a thickening or thinning compensation the line width of a wiring pattern on a design data or an image data for exposure in the unit of the region 22 based on the compensated data. Ž

The application discloses a rotary chute type division device, which comprises a chute component in which a coal flow is flowed, a driving control device, and a slotting discharging hopper; the driving control device is connected with the chute component and used for driving and controlling the chute component to perform rotary movement, and the slotting discharging hopper is located at the tail end of the chute component and used for cutting the coal flow from the chute component; the slotting discharging hopper is provided with a discharging hopper with different sampling angles. For the uniform coal flow passes through the upper part of the slotting discharging hopper by exact time ratio, several parts of coal samples with different masses and fixed quality are acquired from the slotting discharging hopper; the rotary chute type division device is good for improving the division precision. The application further discloses a coal sampling preparation device; for the coal sample canbe acquired at fixed quality, the rotary chute type division device is good for improving the preparation efficiency of the coal sample.

The invention relates to multi-station charging equipment of a packaging machine. The multi-station charging equipment comprises a bottom plate and at least two feeding devices arranged on the bottom plate. Each feeding device comprises a shell with a material containing cavity, a first extrusion mechanism and a discharging mechanism. An opening is formed in the top of each shell, a first extrusion groove is formed in each material containing cavity, a discharging channel is formed in one end of each first extrusion groove, and each first extrusion mechanism comprises a first extrusion push block and a first extrusion driving unit. Each discharging mechanism comprises a discharging push block and a discharging driving unit. Second extrusion mechanisms are further included. A second extrusion groove communicated with the corresponding first extrusion groove is further formed in each shell. Each second extrusion mechanism comprises a second extrusion push block and a second extrusion driving unit. Each second extrusion push block is provided with a striker plate. The striker plates move along with the second extrusion push blocks to open or close the openings in the tops of the shells. According to the technical scheme, the technical effects of increasing the extrusion rate and reducing the mass deviation of packaged materials are achieved.

The invention relates to a forming machine servo feeding mechanism with a controllable feeding process. The forming machine servo feeding mechanism with the controllable feeding process comprises a machine tool body, a speed reducer is arranged at the lower part of the machine tool body, a servo motor is connected to the speed reducer, a swing rod is connected to an output shaft of the speed reducer in a sleeving mode, a connecting plate is hinged to the upper end of the swing rod, a material boot is hinged to the front end of the connecting plate, a feeding panel is arranged on a female die plate of a machine tool body die frame, the material boot moves back and forth on the feeding panel, a tensioning air cylinder hinged to the machine tool body is arranged above the feeding panel, the lower end of the tensioning air cylinder is hinged to the middle part of the connecting plate, a lower punch is arranged below a female die cavity of the female die plate, a hopper is arranged outside the upper part of the machine tool body, and a rubber hose is arranged at the lower end of the hopper and connected with the material boot.

The invention provides a burning apparatus and a manufacturing method of reduced iron. The burning apparatus comprises a burning furnace provided with a feed stock processing space, and a gas supply unit. The feed stock processing space is successively divided into a drying region, a heating region, a reduction region and a cooling region along the movement direction of feed stocks. The gas supply unit is used for connecting mutually different regions in the feed stock processing space. During the step of forming the interior atmosphere of the feed stock processing space by means of the gas supply unit, the exhaust gas in the reduction region is respectively supplied to the drying region and the heating region. At the same time, the exhaust gas in the heating region is supplied to the cooling region and the exhaust gas in the cooling region is supplied to the reduction region. Therefore, the temperature of the atmosphere and the concentration of oxygen in the feed stock processing space are controlled, so that the metallization rate of reduced iron in the burning furnace is improved.

Inner circumferential surface of a through hole in a member for miniaturizing a molten glass droplet includes a tapered part having a diameter spreading toward an inlet through which a molten glass droplet enters and receiving a molten glass droplet, and a straight part having a substantially constant diameter and passing therethrough a molten glass droplet collided against the tapered part. An area of the tapered part which is in contact with a molten glass droplet (a) consists of a plurality of areas each having a different opening angle of a taper, wherein an area closer to the straight part has a smaller opening angle of a taper. (b) Alternatively, the opening angle of a taper becomes smaller continuously toward the straight part.

The invention discloses an accurate positioning device for high-turnover frame column main reinforcements. The accurate positioning device is characterized in that a main frame comprises a plurality of square and rectangular pipes; corresponding strip-shaped holes are formed in the inner side walls and the outer side walls of the square and rectangular pipes in the length direction of the square and rectangular pipes; strip-shaped baffles with L-shaped sections are symmetrically fixed to the top edges and the bottom edges of the inner side walls of the square and rectangular pipes, and the two strip-shaped baffles and the inner side walls of the square and rectangular pipes form a limiting cavity; multiple bolt rods are arranged and penetrate through the two strip-shaped holes from the outer side walls of the square and rectangular pipes to enter the main frame; the number of the nuts is the same as that of the bolt rods, and the nuts are arranged in the limiting cavity and are in threaded fastening connection with the bolt rods; and the nuts can slide in the length direction of the limiting cavity. The accurate positioning device for the high-turnover frame column main reinforcements is convenient to operate, light in self weight, capable of being freely adjusted according to different sections, the number of steel bars and the distance and high in turnover rate, and meanwhile, the device can effectively limit the steel bars, so that the steel bars are accurately positioned and have small mass deviation.

Proposed are a high-pressure vessel and a manufacturing method thereof, the high-pressure vessel comprising: a liner including a cylinder portion and dome portions disposed at both ends of the cylinder portion, and storing a high-pressure fluid therein, each of the dome portions having a dome shape; a composite material layer surrounding an outer surface of the liner; and a protective layer surrounding an outer surface of the composite material layer and including a shock-absorbing layer, a heat-resistant layer, and a surface protective layer, which are sequentially laminated, wherein the shock-absorbing layer of the protective layer is made of a resin material and formed by an injection method on an inner surface of the heat-resistant layer.