62results about How to "Equal spacing" patented technology

Pattern transfer is achieved by forming a first patterned hard mask layer with a circuit pattern and a plurality of dummy patterns on a substrate, forming a second pattern mask layer on the substrate, exposing the circuit pattern of the first pattern mask layer, and removing a portion of the substrate exposed by the first patterned mask layer, so as to transfer the circuit pattern to the substrate.

Fine mesoporous silica particles are provided by which not only the functions of low reflectance (Low-n), low dielectric constant (Low-k) and low thermal conductivity but also improved strength of a molded article are achieved. The fine mesoporous silica particles are manufactured by a process including a surfactant composite fine silica particle preparation step and a mesoporous particle formation step. In the silica fine particle preparation step, a surfactant, water, an alkali and a hydrophobic part-containing additive including a hydrophobic part for increasing the volume of micelles are mixed with a silica source to thereby prepare surfactant composite fine silica particles. In the mesoporous particle formation step, the mixture is mixed with an acid and an organosilicon compound to thereby remove the surfactant and hydrophobic part-containing additive from the surfactant composite fine silica particles and provide the surface of each silica fine particle with an organic functional group. The fine mesoporous silica particles have mesopores inside each particle, and are modified on the surface with organic functional groups.

A method and apparatus for improved turbine bellyband rotor seal machining, installation and life are disclosed. A fixture is provided which can be temporarily attached to the turbine disks in a position straddling the gap between the disks, without destacking the turbine rotor. The fixture accepts power tools including a drill and a mill, and positions the power tools to drill and grind a rectangular slot into the disks, where the slot has the exact size and shape needed to receive an anti-rotation block which is integral to the replacement bellyband. Measuring tools are also provided which enable precise location of each of the four slots which must be machined in the disks. The resulting slots have a uniform size and shape, and are equally spaced around the circumference of the disk, thereby facilitating installation of the service bellyband from four identical segments.

The invention discloses a process for producing a built-in condenser by using an applying device for applying a condenser, which comprises the following steps: A, putting condenser pipes on a side plate; B, clamping the condenser pipes to correct distances between adjacent condenser pipes by using a groove of a pinch roller of the applying device; C, pasting the condenser pipes on the side plate by using a metal adhesive tape roll on the applying device; D, pushing forward the applying device along the longitudinal direction so as to fold the metal adhesive tape roll and meanwhile roll the metal adhesive tape through the roller; and repeating the above steps B-D. According to the process for producing the built-in condenser by using the applying device for applying the condenser applying device disclosed by an embodiment of the invention, equal space among condensation pipes and rapid adhesion of an adhesive tape can be realized; the condensation pipes are tightly adhered on a side plate; and the efficiency can be improved.

The invention discloses a combined type brazing ultrahard abrasive grinding wheel matrix suitable for ultrahigh-speed grinding. The combined type brazing ultrahard abrasive grinding wheel matrix provided by the invention comprises a bottom plate, a fixing ring, a pressing ring, a cover plate and embedded lumps, wherein the outer side wall of the annular groove is uniformly provided with multiple installation grooves along the circumference of the bottom plate; one embedded lump which is integral in a T shape is arranged in each installation groove; the fixing ring is arranged in the annular ring in a matching mode and mutually connected with the bottom plate, and the fixing ring is used for limiting the multiple embedded lumps; a pushing mechanism for propping the embedded lumps against the outer side wall of the annular groove is connected to the fixing ring corresponding to each embedded lump; the pressing ring is covered above all the embedded lumps and mutually connected with the bottom plate, and the pressing ring is used for pressing the embedded lumps; the cover plate is arranged in the central circular opening of the pressing ring in a matching mode and connected to the bottom plate; and a part of the cover plate is covered on the fixing ring. The combined type brazing ultrahard abrasive grinding wheel matrix provided by the invention has the advantages of less connecting seam width and good integrity of the embedded lumps, reliable working properties, and safe structure suitable for the ultrahigh-speed grinding.

The invention discloses a tunnel arch foot connecting plate positioning tool and a steel arch construction method. The tunnel arch foot connecting plate positioning tool comprises two or more box bodies, each box body comprises a positioning plate and a cover body, a cavity for containing a connecting plate is formed in the positioning plate, limiting holes corresponding to connecting holes in the connecting plate are formed in the bottom of the positioning plate, a fracture groove is formed in the middle of the cover body, the cover body covers the positioning plates and shields the connecting holes in the connecting plates, and a limiting piece is connected between every two adjacent positioning plates. When the tool is used for construction, firstly, the positioning plates are fixedly installed at the preassembling positions, corresponding to the steel arches, on the two sides, then the connecting plates are fixedly installed on the positioning plates, the limiting pieces are installed between every two adjacent positioning plates and adjusted, the steel arches at the positions, corresponding to arch feet, on the two sides are spliced through the steel arches of the preset size, after the steel arch is fixed, the cover body is installed on the positioning plate, concrete is sprayed, and after the concrete is solidified, the cover body, the positioning plate and the limiting piece are removed. According to the tunnel arch foot connecting plate positioning tool, the connecting hole can be effectively prevented from being blocked.

The invention belongs to the technical field of extraction and purification processing equipment in the field of uranium purification and production, and particularly relates to a method for fixing sieve plates of a pulse sieve plate column. According to the method for fixing the sieve plates of the pulse sieve plate columns, transverse fixing of the sieve plates is achieved through a central rod, pull rods and the like so that a gap between a column body and a plate string can be reduced, and mass transfer is sufficiently achieved. Radial fixing of the sieve plates is achieved through the pull rods and pull rod pipe spacers so that it can be guaranteed that the sieve plates are not prone to deformation, and mixed mass transfer is stable. Longitudinal fixing of the sieve plates is achieved through central pipe spacers, so that it is guaranteed that the distances between the sieve plates are equal, and mixed mass transfer is stable.