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123results about How to "Increase reduction rate" patented technology

Lithographic apparatus, device manufacturing method and variable attenuator

A lithographic apparatus includes an illumination system for providing a projection beam of radiation, a support structure for supporting patterning structure for imparting a pattern to the projection beam, a substrate table for holding a wafer and a projection system for projecting the patterned beam onto a target portion of the wafer. In order to permit control of the radiation dose at the wafer so that the throughput of wafers can be optimised, a variable attenuator is provided to vary the intensity of the projection beam while not changing the position of the beam. The variable attenuator comprises two parallel mirrors positioned such that an input beam of radiation is incident on a first of the mirrors by which it is reflected towards a second of the mirrors by which the beam is reflected to produce an output beam of radiation of required intensity for input to the illumination system, and a tilting mechanism for tilting the mirrors such that the mirrors remain parallel to one another and the angles of incidence of the beams on the mirrors are changed so as to vary the intensity of the output beam. This allows the intensity of the projection beam to be varied continuously without changing the position of the beam, whether the input beam is converging, diverging or parallel.
Owner:ASML NETHERLANDS BV

Thick specification hot-rolled steel sheet for roll forming high intensity metal sheet pile and manufacturing technology

The invention relates to a high strength hot rolled plate and a production process thereof, in particular to a heavy gauge hot rolled steel plate for a roll bending forming high strength steel plate pile and a production process thereof. The invention mainly solves the technical problems of inadequate thickness, and lowcold bending performance and absorbed-in-fracture energy in the prior high strength heavy gauge steel plate. The technical proposal comprises: the heavy gauge hot rolled steel plate for the roll bending forming high strength steel plate pile comprises the following chemical components by weight percentage: 0.08 to 0.15 percent of C, 0.10 to 0.40 percent of Si, 0.30 to 0.90 percent of Mn, 0.020 to 0.040 percent of Nb, 0.010 to 0.030 percent of Ti, less than or equal to 0.025 percent of P, less than or equal to 0.015 percent of S, and the balance being Fe. The microscopic structures can be fine grain ferrites, and pearlitic structures plus a small amount of bainite structures which are dispersed; the grain size level is 11 to 14; and the banded structure level is less than 0.5. The high strength hot rolled plate is mainly used for producing the steel plate pile.
Owner:SHANGHAI MEISHAN IRON & STEEL CO LTD

Method for eliminating surface cracks of ultra-wide ferrite stainless steel middle-thick plate

The invention discloses a method for eliminating surface cracks of an ultra-wide ferrite stainless steel middle-thick plate. The proportion of the medium axis crystal of a continuous cast blank is notlower than 75%; the homogenization temperature of the cast blank is 750-850 DEG C, the duration in the furnace is 1-2 hours, and water cooling is carried out to the room temperature; the surface roughness Ra of the cast blank after grinding is less than or equal to 70 microns, and high-temperature antioxidant coating is sprayed; the cast blank is processed by a preheating section, a heating section and a soaking section in sequence, and then is discharged from the furnace; the temperature of the preheating section is 950-1180 DEG C, the temperature of the heating section is 1180-1260 DEG C, the temperature of the soaking section is 1220-1250 DEG C, and the furnace time is 4-5.5 hours; the rough rolling temperature is larger than or equal to 1150 DEG C; the finish rolling temperature is larger than or equal to 1150 DEG C, the final rolling temperature is larger than or equal to 950 DEG C, the rolling single-pass pressing rate is less than or equal to 20%, the annealing temperature is 750-880 DEG C, the furnace time is 2-5 min/mm, and air cooling is carried out. The product width is 2500-4000 mm and the thickness is 8-30 mm. The rejection rate of the surface cracks is reduced from 6% or above to 0.5% or below.
Owner:ANGANG STEEL CO LTD

Isolation transformers

The issue to be resolved by the present invention is to provide isolation transformers with high noise attenuation rates as well as high reliability, in the high-frequency region above a few MHz, by sufficiently suppressing the amplitudes of noise attenuation characteristic curves, which are irregular, saw-tooth shaped waves with crests and troughs of various sizes, of multi-layer, multi-winding transformers.
An isolation transformer comprised by a multi-layer, multi-winding primary coil 1, a multi-layer, multi-winding secondary coil 2, and a core that forms a magnetic path between the aforementioned primary coil and the aforementioned secondary coil, functions as an isolation transformer to resolve the aforementioned issue by changing the coil layers of one or both of the coils formed by winding an insulated, covered, copper-wire 5 to a multi-layer, multi-winding coil, into which a number of short-circuit rings 4 made of conducting films are inserted and layered.
The planer configuration of the aforementioned conducting short-circuit rings 4 is made approximately identical to that of the neighboring coil-layers, and their thickness is made approximately identical to or less than the skin depth of the induced current generated by the skin effect in the high-frequency region, in which resonances should be suppressed.
Owner:K K DENKEN SEIKI INST

Novel stainless steel cold continuous rolling technology and unit thereof

A novel stainless steel cold continuous rolling technology unit comprises an uncoiling machine, a straightening machine, a hydraulic shear, a welding machine, a first tension roller, a continuous rolling unit, an outlet loop, a fourth tension roller, a slitting shear and a coiling machine. The uncoiling machine, the straightening machine, the hydraulic shear, the welding machine, the first tension roller, the continuous rolling unit, the outlet loop, the fourth tension roller, the slitting shear and the coiling machine are sequentially connected. The novel stainless steel cold continuous rolling technology unit is characterized in that an inlet loop and a second tension roller set are additionally arranged between the first tension roller and the continuous rolling unit, a cleaning and drying unit, a third tension roller set and the outlet loop are sequentially connected and additionally arranged between the continuous rolling unit and the fourth tension roller, the continuous rolling unit can be arranged in the mode that a plurality of rack four-roller continuous rolling units are connected in series, small-diameter rollers are adopted in the continuous rolling unit, and the continuous rolling unit is driven by supporting rollers in a centralized mode. By the adoption of the technical scheme, some small-scale enterprises can produce stainless steel cold rolling strips by using a common four-roller or six-roller rolling machine instead of twenty-roller and eighteen-roller rolling machines which are high in investment cost and maintenance cost, and therefore the production cost is greatly reduced.
Owner:DALIAN DESIGN INST CO LTD CHINA FIRST HEAVY IND +1
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