Abstract: The present application relates to the fields of cylinder liners and inspection technologies thereof, and specifically, to a burr-shaped cast-in cylinder liner and an inspection method for same. The cylinder liner is made of cast iron and is cast into an engine block through a die casting or gravity casting process, and a plurality of burrs are formed on an outer circumferential surface of the cylinder liner. At least one of the burrs meets: in the burr-shaped cast-in cylinder liner, a diameter of the burr at a position 0.25 mm away from the top end is L1, a diameter of the burr at a position 0.4 mm away from the top end is L2, and a range of a ratio of the diameter L1 to the diameter L2 is 0.65?L1:L2?1.15.

Abstract: An ultra-thin flexible vapor chamber and a preparation method and application thereof are provided. Based on projection micro stereolithography technology, the preparation method of the present disclosure enables preparation of the ultra-thin flexible vapor chamber of a micro-scale and high-precision ultra-thin dot matrix array structure with excellent liquid absorption and support capabilities. To improve properties of the vapor chamber, various dot matrix array structures including but not limited to a star-shaped array structure, a radial array structure and a parallel array structure, can be designed by topologically optimizing a distribution of the dot matrix array structure according to a location of a heat source. The ultra-thin flexible vapor chamber prepared herein not only meets requirements of an electronic device for a vapor chamber thickness and weight, but also features flexibility and bendability, stronger thermal conductivity, less thermal resistance and less energy consumption.

Abstract: An ultra-thin flexible vapor chamber and a preparation method and application thereof are provided. Based on projection micro stereolithography technology, the preparation method of the present disclosure enables preparation of the ultra-thin flexible vapor chamber of a micro-scale and high-precision ultra-thin dot matrix array structure with excellent liquid absorption and support capabilities. To improve properties of the vapor chamber, various dot matrix array structures including but not limited to a star-shaped array structure, a radial array structure and a parallel array structure, can be designed by topologically optimizing a distribution of the dot matrix array structure according to a location of a heat source. The ultra-thin flexible vapor chamber prepared herein not only meets requirements of an electronic device for a vapor chamber thickness and weight, but also features flexibility and bendability, stronger thermal conductivity, less thermal resistance and less energy consumption.