493 results about "Longest Diameter" patented technology

It is an object of the present invention to simplify steps needed to process a wiring in forming a multilayer wiring. In addition, when a droplet discharging technique or a nanoimprint technique is used to form a wiring in a contact hole having a comparatively long diameter, the wiring in accordance with the shape of the contact hole is formed, and the wiring portion of the contact hole is likely to have a depression compared with other portions. A penetrating opening is formed by irradiating a light-transmitting insulating film with laser light having high intensity and a pulse high in repetition frequency. A plurality of openings having a minute contact area is provided instead of forming one penetrating opening having a large contact area to have an even thickness of a wiring by reducing a partial depression and also to ensure contact resistance.

It is an object of the present invention to simplify steps needed to process a wiring in forming a multilayer wiring. In addition, when a droplet discharging technique or a nanoimprint technique is used to form a wiring in a contact hole having a comparatively long diameter, the wiring in accordance with the shape of the contact hole is formed, and the wiring portion of the contact hole is likely to have a depression compared with other portions. A penetrating opening is formed by irradiating a light-transmitting insulating film with laser light having high intensity and a pulse high in repetition frequency. A plurality of openings having a minute contact area is provided instead of forming one penetrating opening having a large contact area to have an even thickness of a wiring by reducing a partial depression and also to ensure contact resistance.

A vascular or endoluminal stent is adapted for deployment in a vessel or tract of a patient to maintain an open lumen. The stent constitutes a scaffold formed from a single open-ended tube having a multiplicity of through-holes in its wall. The through-holes are defined by a plurality of struts that bound the holes. Each of the struts has an optimized cross-section of oval shape with a long diameter generally aligned with the length or circumference of the tube wall and a short diameter generally aligned with the thickness of the tube wall. The oval shape of the struts provide several advantages including enhancing flexibility of the stent, easing advancement of the stent through a lumen of the vessel or tract for deployment at a target site therein, protecting the balloon of a balloon catheter on which the stent is tightly crimped, and enhancing expansion of the stent during deployment while maintaining its capability to withstand compression in response to recoil of the vessel or tract following deployment.

The present invention relates to a glass fiber reinforced resin composition. The objective is to provide a resin composition based on flat cross section glass fiber reinforced thermoplastic resin and having excellent mechanical strength, small aeolotropism of mold shrinkage, good appearance and sliding characteristic. The resin composition contains (A) thermoplastic resin (component A) containing aromatic polycarbonate resin (component A-1); (B) flat cross section glass fibre (component B-1) that an average value of long diameters of the fibre cross section is 10-15[Mu]m, an average value of ratios of the long diameters and short diameters is 1.5-8, and filler material (component B-2), and (C) slide endowing agent (component C), wherein relative to 100 parts of component A by weight, the resin composition contains 1-150 parts of B-1 by weight, 0-150 parts of B-2 by weight, and 0.1-30 parts of C by weight.

The present invention belongs to the technological field of the polymer material, provides and relates to a wholly degradable natural fiber and polylactic composite material and the preparation method. The composite material consists of the surface modified natural fiber and the polylactic acid. The specific preparation steps are: first the natural fiber of a certain long diameter is taken and the natural fiber is soaked in the aqueous solution of the coupling agent for 1 to 100 minutes; then the natural fiber is taken out and dried; thus the surface modified natural fiber can be got. Then the polylactic acid is molded and refined in the two-roller smelting machine at a temperature between 100 and 160 Celsius system; after 1 to 20 minutes, the surface modified natural fiber is added to mix and refine. The mixed products are putinto the mold; the mixed products are compressed and molded in the flat vulcanization machine to make the natural fiber and polylactic composite material. Compared with the pure polylactic acid, the mechanical and thermal performances of the composite material are improved; the composite material can be used in the preparation of the engineering plastics with the demanding conditions. The composite material of the present invention can be wholly degraded in the natural environment after being used and wasted, and the composite material belongs to the environmentally friendly material.

A piston ring having improved scuffing resistance, cracking resistance and fatigue resistance, consists of a high-chromium martensitic stainless steel and a sliding nitriding layer formed on the surface of said steel. The stainless steel consists of C: 0.3 to 1.0%; Cr: 14.0 to 21.0%, N: 0.05 to 0.50%, at least one of Mo, V, W and Nb: 0.03 to 3.0% in total, Si: 0.1 to 1.0%, Mn 0.1 to 1.0%, P: 0.05% or less, S: 0.05% or less, the balance being Fe and unavoidable impurities. The sliding nitriding layer comprises on its surface hard particles mainly consisting of nitrides in a range of from 0.2 to 2.0 μm of average particle size, 7 μm or less of the longest diameter, and from 5 to 30% in area ratio.

The present invention provided an insert molded product excellent in high and low temperature impact characteristics and reduced in the occurring amount of a mold deposit at the time of molding. This insert molded product is constituted by the insert molding of a resin composition, which is obtained by compounding 5-200 pts.wt. of a fibrous reinforcing material (B) having a flat cross-sectional shape wherein the ratio of the long diameter (the longest straight line distance of a cross section) and short diameter (the longest straight line distance in the direction right-angled to the long diameter) of a cross section right-angled to a length direction is 1.3-10 and 1-25 pts.wt. of a thermoplastic elastomer (C) with 100 pts.wt. of a polyarylene sulfide resin (A), and a metal or an inorganic solid.

The invention discloses a powder metallurgy preparation method of a valve clack of a membrane valve. The preparation method comprises the following steps that iron-based mixed powder is prepared so that the iron-based mixed powder comprises the following ingredients in percentage by mass: 0.5 to 1.2 percent of Mo, 0.1 to 0.25 percent of Mn as prealloy and the balance of iron and impurities, in addition, 0.6 to 4.2 percent of Al powder, 0.6 to 1.2 percent of Cu powder, 0.5 to 1.5 percent of Ni powder, 0.5 to 1.2 percent of graphite powder and 0.21 to 4.9 percent of polyamide wax flake powder are added into the iron-based mixed powder, the average grain diameter of the long diameter of the polyamide wax flake powder is less than 200mum, the thickness is less than 30mum, and valve plate workpieces are obtained through pressing and sintering. The powder metallurgy preparation method has the advantages that the manufacture process has higher production continuity, in addition, the material utilization rate is high, the preparation method is suitable for mass production, and the cost is reduced.

The invention discloses a manufacturing method for a large-size high-density high-uniformity CuCr alloy. The manufacturing method is characterized in that CuCr mixed powder is solidified and formed through discharge plasma sintering, by optimizing a sintering die structure, the temperature is increased to 800 DEG C to 880 DEG C through a step heating manner at 10 DEG C / min to 50 DEG C / min and then kept for 2 minutes to 8 minutes while axial mechanical pressure is applied, and a sintered cylinder ingot with the diameter not smaller than 50 mm, the long diameter ratio of 0.04-1.0, the density larger than 99.0%, axial and radial fluctuation less than 1% and an uniform component structure can be obtained. According to the manufacturing method, different sintering conditions can be selected according to the size demand of the CuCr alloy, the process is simple, the period is short, the production efficiency is high, and the obtained CuCr alloy can be made into a finished product through a small amount of subsequent machining and then used as a part of a vacuum circuit breaker in large-power transmission and transformation equipment.