39results about How to "Good strength and stiffness" patented technology

An oriented strand board panel and a method for making the same are provided. The OSB panel has at least three layers, namely, a top surface layer, a core layer, and a bottom surface layer. A first cover layer may be provided on the top surface layer. Likewise, a second cover layer may be provided underneath the bottom surface layer. The first cover layer and / or the second cover layer may have a smaller strand angle, defined by an average deviation of strands from a longitudinal axis, than the top surface layer and the bottom surface layer. The smaller strand angles for the first cover layer and / or the second cover layer provide the OSB panel with greater stiffness and strength along the strong direction of the panel without significant compromise of strength and / or stiffness in the weak direction of the panel.

The present disclosure provides a DRAM cell structure. The DRAM cell structure includes a substrate, a gate structure disposed in the substrate, a source region and a drain region disposed in the substrate respectively at two sides of the gate structure, a landing pad disposed over the drain region, a plurality of carbon nanotubes disposed on the landing pad, a top electrode disposed over the plurality of carbon nanotubes, and a dielectric layer disposed between the top electrode and the plurality of carbon nanotubes.

An open cell or highly porous woven composite truss utilizes fibers of carbon, glass, ceramic, or the like that are woven together in a loom. The warps or tow are woven with the wefts, while the fibers are impregnated with resin. The resin impregnation step may be performed before or after the weaving step. The truss is then cured on the loom and later may be machined as needed. A rigid foam material may be used to stabilize the shape of the truss prior to curing and while machining. The foam may be later chemically dissolved or otherwise disposed of.

The invention discloses an adjustable support pad stone template. The adjustable support pad stone template comprises a rectangular template and a template adjusting device, wherein the rectangular template is made of square steels; the rectangular template is made by connecting two transverse square steels with two vertical square steels; the transverse square steels and the vertical square steels, which are adjacent to each other, are detachably connected with each other through connecting devices; the template adjusting device comprises angle irons and angle screws which are correspondinglypaired with the square steels; the template adjusting device is movably connected with the rectangular template and used for adjusting elevation of the template and height differences of four cornersof the top surface of the template; and the angle screws are fixed at the four corners of the angle irons. According to the adjustable support pad stone template, it can be guaranteed that the elevation of support pad stone is accurate and the height differences of the four corners of the support pad stone conform to a specified value; and the quality of the support pad stone can be improved.

The present invention proposes a hard rock cutterhead and a cantilever roadheader comprising the cutterhead. The hard rock cutterhead includes a conical cutterhead main structure, the cutterhead main structure includes a head, spokes and flanges, and the head and spokes The spokes are connected to the flange, the head and the spokes are provided with detachable cutters, and the cantilever boring machine includes the above-mentioned hard rock cutter head. The advantages of the invention: the cutterhead structure is more uniform in force, has a strong ability to resist deformation and damage, and can withstand high thrust, high speed and other driving conditions; the cutterhead is made of whole plate processing or steel plate welding, and the overall strength and rigidity are higher. Good; the cutter adopts the form that the end cover is located on the mounting surface of the cutter seat, which can improve the rock-breaking efficiency; the center hob of the cutter head can be retracted when the cutter head swings and cuts, effectively avoiding abnormalities such as eccentric grinding and edge chipping of the center hob Damage problem; the interchangeable installation of the hob and toothed cutter can excavate not only soft soil but also hard rock; the cutter head can swing up and down, left and right, and can excavate circular and special-shaped sections.

The invention discloses a cutter head of a multi-mode shield machine and the shield machine thereof. block and sub-beam, the center block is set in the middle of the cutter head body, the center block is provided with a hob, the center block is connected with the outer ring through the main beam, and the rear part of the center block is detachably provided with a pipeline transition Mechanism; the sub-beam is connected to the main beam through a twisted leg base, and the rear part of the sub-beam is detachably provided with a slag sliding structure; both the main beam and the sub-beam are equipped with knives. In the invention, the knives are evenly distributed, and the structure of the cutter head is reasonable. The middle part of the cutter head adopts a reinforced central block design, which reduces the deformation of the cutter head during the excavation process; The probability of build-up is reduced, reducing wear on the deck face.

The invention relates to the technical field of pipes, in particular to an XSC50 cold shrinkage type lining plastic aluminum alloy pipe and pipeline system used for fuel gas and a manufacturing method. The XSC50 cold shrinkage type lining plastic aluminum alloy pipe is composed of an XSC50 resin pipe layer, an aluminum pipe layer, an oxidation film protection layer and a high-adhesive-force oxidation-corrosion-prevention layer which are sequentially arranged from inside to outside. The XSC50 resin pipe is used as the raw material, and therefore the manufactured XSC50 cold shrinkage type lining plastic aluminum alloy pipe can be high in mechanical strength, good in tenacity, quite good in strength rigidity in a high-temperature environment, high in heatproof grade and suitable for working under various environments. Meanwhile, the aluminum pipe and the XSC50 resin pipe are connected in a seamless manner through cold shrinkage and can be firmly combined without adhesives; due to the adoption of the XSC50 resin pipe layer of a certain thickness, the aluminum pipe layer of a certain thickness, the oxidation film protection layer of a certain thickness and the high-adhesive-force oxidation-corrosion-prevention layer of a certain thickness, the strength of the manufactured pipeline reaches about 5.5 MPa at the temperature being 70 DEG C within 50 years; and meanwhile the manufacturing cost is controlled. The manufacturing method is simple, and the manufactured XSC50 cold shrinkage type lining plastic aluminum alloy pipe is excellent in performance and has important significance in promoting application and development of fuel gas pipes.