4results about How to "Avoid dark spots" patented technology

The invention belongs to the field of high-temperature alloy manufacturing, and particularly discloses a low-segregation nickel-based high-temperature alloy, a preparation method of the low-segregation nickel-based high-temperature alloy and a segregation defect control method. The segregation defect control method comprises the steps that the melting speed of the nickel-based superalloy in the steady-state melting stage of vacuum consumable smelting is determined on the basis of the content of segregation-prone elements in the nickel-based superalloy; based on the determined melting speed of the steady-state melting stage, the filling ratio adopted for vacuum consumable smelting of the nickel-based superalloy is determined; and carrying out vacuum consumable smelting on the nickel-based superalloy according to the determined filling ratio and the determined melting speed in the steady-state smelting stage. According to the segregation defect control method, black spots, white spots and surface quality of the cast ingot in the nickel-based superalloy vacuum consumable smelting process can be effectively controlled.

This utility model discloses a sealing head structure and a battery, relating to the field of battery manufacturing technology. Specifically, it includes a heat-sealing head, a heat-insulating layer, and a cold-sealing head. The heat-insulating layer is connected to one side wall of the heat-sealing head; the cold-sealing head is connected to the side wall of the heat-insulating layer away from the heat-sealing head. The heat-insulating layer blocks heat transfer between the heat-sealing head and the cold-sealing head. This application uses a heat-insulating layer between the heat-sealing head and the cold-sealing head to block heat transfer, enabling the cold-sealing head to effectively cool and protect against the spread of heat radiation, thus protecting the inner layer of the aluminum-plastic film from damage. This significantly reduces process defects caused by heat radiation and avoids cell gas expansion caused by the inability to expel gas in time. It effectively improves the formation interface, avoids defects such as black spots or lithium plating during the formation process, and is beneficial for improving battery electrical and safety performance while reducing production costs.

The application discloses a driving backboard and a display panel. The driving backboard comprises a substrate, a pad layer arranged on one side of the substrate and comprising a pad, and a connecting column arranged on the pad. The side surface of the connecting column is a slope surface, and the slope angle of the slope surface ranges from 30 degrees to 50 degrees. The application can avoid the phenomenon of dark spots after the light emitting element is electrically connected with the driving backboard.

The utility model provides a kind of electric core, cylindrical battery and electric equipment, the electric core is wound to form cylindrical shape by pole piece and diaphragm, the pole piece includes current collector and active material layer, active material layer is at least partially arranged in the thickness direction of current collector at least one side, active material layer is equipped with multiple recessed structures on the surface away from current collector, the area proportion of recessed structure gradually decreases in the direction from the winding starting end to the terminal end of pole piece, the electric core can improve the infiltration effect of electrolyte to the inner ring pole piece of cylindrical battery.