4results about How to "Long-lasting and stable performance" patented technology

The invention discloses an online polishing and curling integrated device and process for a magnesium alloy plate strip. The device is located between a finish rolling mill and a crimping machine and comprises a polishing groove body, a grading polishing roller set arranged above the groove body, a tension control system and a constant tension crimping mechanism. Special weak acid polishing liquid is supplied to the polishing area through the spraying system, mechanical-chemical collaborative polishing is achieved under the spraying wetting condition, and the problems caused by roller body immersion are avoided. The tension system performs hierarchical closed-loop control according to plate thickness, and the crimping mechanism is linked to keep tension constant. The process comprises online collaborative polishing and optional electrolytic polishing. Polishing and curling aiming at the characteristics of the magnesium alloy are integrated on line, the problems that magnesium chips are generated through off-line grinding, and continuous production is difficult are solved, the output of the magnesium chips is smaller than 0.002 kg / m < 2 >, the surface roughness Ra reaches 0.15-0.8 micrometer, the production efficiency is improved by 40% or above, and the method is suitable for continuous production of wide plate strips of 1600-1800 mm.

The application provides a kind of weather-resistant optical functional coating nanoparticles and its preparation method and application, belong to the field of coating.The nanoparticles include: inner core, the inner core is near-infrared reflective material;The near-infrared reflective material uses metal oxide nanoparticles with near-infrared reflective function;First wrapping layer, the first wrapping layer is silica intermediate layer, which wraps the inner core;Second wrapping layer, the second wrapping layer is alumina passivation layer, which wraps the silica intermediate layer.The nanoparticles are used as the functional filler of weather-resistant optical functional coating.The application provides a kind of core-shell structure nanoparticles, by introducing specific passivation layer, while retaining the near-infrared reflective function of inner core material, fundamentally eliminate its photo-catalytic damage to organic matrix, so as to obtain long-acting stability, high visible light transmittance, excellent spectral selectivity and weather-resistant coating.

The application relates to the technical field of battery packs, in particular to an anti-loose electrical connection battery pack. The technical scheme comprises a shell, an internal battery pack and a liquid cooling channel. The innovation is that a hydraulic locking module is integrated into the connecting part of the copper bar leading out of the shell. The module fills transmission medium in the flow cavity of the limiting ring, and controls the in-out of the plug by using a driving mechanism, so as to block or release the rotating path of the blocking block linked with the nut. When the plug blocks the flow cavity, a hydraulic lock is formed, and the nut is completely prevented from loosening; when the plug exits, the nut can be normally screwed. The application fundamentally solves the problem that the electrical connection is prone to loosening in a vibrating environment, is high in safety and convenient in operation and maintenance.

The invention discloses a switch, and relates to the technical field of switches, the switch comprises an upper shell and a lower shell arranged at the lower end of the upper shell, the upper shell and the lower shell are tightly connected to form an internal cavity, the upper shell is provided with a first heat dissipation assembly, and the lower shell is provided with a second heat dissipation assembly; a circuit board assembly is arranged in the internal cavity; a first heating device and a second heating device are arranged in the inner cavity, and the first heating device is electrically connected with the circuit board assembly and is thermally coupled with the first heat dissipation assembly; the second heating device is electrically connected with the circuit board assembly and thermally coupled with the second heat dissipation assembly, and heat dissipation is achieved through the second heat dissipation assembly. The first region and the second region are isolated from each other in the interior chamber by a physical space. The main heating source is arranged in the two cavities with physical isolation, and the independent heat dissipation paths integrally formed with the shell are configured for the two cavities respectively, so that partitioned heat dissipation is realized, and long-term temperature stability of the equipment under high load is ensured.