7results about How to "Reduce waviness" patented technology

The invention relates to the technical field of steel rolling, and discloses a low-waviness galvanized IF steel outer plate and a preparation method thereof.The low-waviness galvanized IF steel outer plate comprises, by weight, 0 < C < = 0.0035%, 0 < Si < = 0.03%, 0.08% < = Mn < = 0.25%, 0 < P < = 0.02%, 0 < S < = 0.015%, 0.02% < = Al < = 0.055%, 0.02% < = Ti < = 0.075%, 0 < = Nb < = 0.035%, 0 < = N < = 0.005% and the balance Fe and inevitable impurities; and the waviness Wsa of the low-waviness galvanized IF steel outer plate is less than or equal to 0.35 mu m. According to the scheme, the problem that long waves generated by a floating-coat-free 2C1B coating process exceed the standard due to the fact that the corrugation degree is too high after the steel plate is subjected to stamping deformation is solved, the brightness of the steel plate after forming and coating can be greatly improved, and the method has important significance on improving the production efficiency of turning enterprises.

This invention proposes a floating photovoltaic platform, comprising a photovoltaic support platform, a flexible membrane, and several floats. The photovoltaic support platform includes buoys floating on the water surface and a deck positioned above the buoys. The buoys provide buoyancy, and the deck is used to mount photovoltaic modules. The floats are fixed around the photovoltaic support platform by mooring lines connected to the seabed and are spaced apart from the platform. The flexible membrane connects the deck and the floats, surrounding the photovoltaic support platform. This invention can buffer wave energy in advance using the flexible membrane, while simultaneously guiding water flow to cool the photovoltaic modules, thereby improving photovoltaic power generation efficiency.

The present invention provides a method, device and computer equipment for constructing a three-dimensional fracture network rock model. The method includes: obtaining geometric information of multiple planes of the rock mass; obtaining intersection information of intersection segments formed by each plane intersecting with all other planes; adjusting each plane and each intersection line to a new position by rotation and translation; generating a first grid surface based on fractal theory, and using the first grid surface to perform grid fluctuation attenuation processing on multiple intersection segments of each plane to obtain multiple second grid surfaces; cutting each contour grid surface with the contour intersection line as the cutting line to obtain multiple contour fractal surfaces; adjusting multiple contour fractal surfaces and multiple joint grid surfaces back to their original positions by rotation and translation to obtain a rock model to be cut; cutting the rock model to be cut based on the internal intersection line to obtain multiple block models. The present invention uses the fractal theory principle to dynamically adjust the grid characteristics of the intersection area, solving the problem of difficult grid division of multiple fractal surfaces.

The invention provides a floating type photovoltaic platform which comprises a photovoltaic supporting table, a flexible film and a plurality of floaters. The photovoltaic supporting table comprises a buoy floating on the water surface and a deck arranged above the buoy, the buoy is used for providing buoyancy, and the deck is used for installing a photovoltaic assembly. The floaters are fixed to the periphery of the photovoltaic supporting table through mooring ropes connected with the water bottom, and the floaters and the photovoltaic supporting table are arranged at intervals. The flexible film is connected between the deck and the floater and arranged around the photovoltaic supporting table in a surrounding mode. Wave energy can be buffered in advance through the flexible film, meanwhile, water flow is guided to achieve cooling of the photovoltaic module, and the photovoltaic power generation efficiency is improved.

A zinc-based high-strength outer sheet with excellent formability and equipped with a GI or ZM coating, and its manufacturing method, are disclosed. The chemical composition of the steel, by mass percentage, is as follows: C: 0.04%–0.1%, Si: 0.2%–0.5%, Mn: 1.2%–1.8%, P≤0.02%, S≤0.01%, Al: 0.02%–0.05%, Cr≤0.5%, Nb≤0.02%, N≤0.006%, with the balance being Fe and unavoidable impurities. The content of Si, Mn, and Cr satisfies the condition: (Mn+Cr)−2×Si≥0.5%. This method, through optimized composition design and precise control of the annealing-galvanizing process, synergistically solves the core contradiction of achieving high strength, high formability, and high surface quality in high-strength outer sheets. In particular, it effectively inhibits surface oxidation of the substrate, ensuring the uniformity, density, and adhesion of the coating, and can stably produce high-quality outer sheet products suitable for pure zinc (GI) and zinc-aluminum-magnesium (ZM) coatings.

According to the floating type photovoltaic power generation device provided with the water spraying dynamic positioning system, in the device, a photovoltaic support comprises a bottom face composed of horizontal supporting rods and inclined supporting rods obliquely connected with the horizontal supporting rods, a buoy is connected with the bottom face to provide buoyancy, and a photovoltaic power generation panel is supported on the inclined supporting rods; the gravity center sensing device is installed on the water pumping device, the gyroscope measures gravity center change signals caused by wave loads or wind loads, the wire is connected with the gyroscope and the water pump so as to convey the gravity center change signals to the water pump, the at least one guide pipe communicates with the water pump, the at least one water spraying device communicates with the guide pipe, and the water pump adjusts pressure in the guide pipe based on the gravity center change signals. And the water spraying device sprays water in the direction opposite to the gravity center change so as to dynamically position and adjust in real time. The device reduces the wave load acting on the floating type photovoltaic power generation system, reduces the change memory of the mooring internal force, and keeps the dynamic positioning of the floating type photovoltaic power generation system.

The invention discloses a numerical control gear grinding machine for high-precision gear machining, and relates to the technical field of numerical control gear grinding machines, the numerical control gear grinding machine for high-precision gear machining comprises a workbench, a gear connecting seat, a grading grinding mechanism, a feeding mechanism, a linear reciprocating driving part and the like, the lifting plate controls rack position switching through a micro motor, a second turbine worm self-locking speed reducer and a screw rod; in the aspect of high-precision graded grinding, through unique design, rough, medium and accurate grinding processes of tooth grooves are achieved, the grinding amount and precision are precisely controlled, the size, shape precision and surface roughness of the tooth grooves are improved, the tooth surface waviness and tooth profile errors are reduced, the gear transmission stability is enhanced, vibration noise is reduced, and the service life is prolonged; the racks are switched and matched efficiently, multiple procedures are completed on the same equipment, the carrying and clamping frequency is reduced, and the machining efficiency and precision are stabilized.