3results about How to "The steps are closely connected" patented technology

The invention relates to the technical field of blade repairing treatment, discloses a cold spraying repairing method for an aluminum alloy blade and aims to solve the problems that a base body is prone to being damaged and the performance of a repairing layer is poor in an existing repairing method. The method comprises the steps of mechanical polishing, cold spraying, mechanical coping and follow-up protection, specifically, surface inspection, pretreatment, spraying operation and multi-dimensional inspection are sequentially conducted on cold spraying, 501.1-mark pure aluminum-Al2O3 mixed powder is adopted, after positioning and precise parameter spraying are conducted through a special tool, coping is conducted till the molded surface requirement is met, and then micro-arc oxidation and paint spraying protection are conducted. The method is low in cold spraying temperature, free of damage to a base body, excellent in repairing layer performance, high in precision, high in corrosion resistance and abrasion resistance and stable and reliable in process, the operation and maintenance cost can be remarkably reduced, and the service life of the paddle is prolonged.

The invention provides a method for recycling high-purity lithium sulfide from ternary battery powder. The method solves the following technical problems: firstly, the traditional recovery process mainly aims at preparing lithium carbonate, the process is long, the energy consumption is high, and the existing lithium sulfide preparation needs to take high-purity lithium salt as a raw material, so that the cost is high, the reaction condition is harsh, and the product purity is difficult to meet the requirement of a solid-state battery; secondly, the retired ternary battery is complex in component, a leaching solution contains transition metal ions such as nickel, cobalt and manganese and impurities such as calcium, magnesium and fluorine, the impurities are difficult to reduce to the strict standard required by a solid-state battery electrolyte in a traditional purification process, and new impurities are possibly introduced; thirdly, the existing process is insufficient in selective separation and deep purification of lithium, and the lithium is difficult to separate from other metals, so that the purity of the recovered product is low; and 4, complex steps such as ethanol dissolution and crystallization, hydrogen protection calcination and the like are often needed in the existing lithium sulfide preparation, so that the cost is further increased, and large-scale application of lithium sulfide and efficient resource utilization of retired ternary batteries are limited.

This invention relates to the field of optical alignment technology, specifically providing a global field-of-view calibration method and device based on a digital model of an alignment system. The method includes: establishing a measured coordinate system and acquiring measured point cloud data; matching the measured point cloud data with ideal point cloud data to determine the direction of the optical axis in the measured coordinate system; constructing a detection optical path and acquiring the mirror model of the standard mirror in the detection optical path and three reference planes on the standard mirror fixture; calculating the normal vector of the standard mirror and the spatial pose relationship between the reference planes and the standard mirror; establishing a field-of-view coordinate system and transforming the spatial pose relationship between the reference planes and the standard mirror to the field-of-view coordinate system; and calculating the field-of-view angle of the normal vector of the standard mirror. This invention reliably transmits the optical surface pose, which cannot be directly measured, to a field-of-view coordinate system established based on the secondary mirror of the camera under test, making the calculation of the optical axis direction and field-of-view angle intuitive and accurate, effectively ensuring the alignment accuracy of asymmetric, off-axis optical systems such as off-axis three-lens reflex cameras.