Abstract: Methods, terminals, and systems for pushing information are provided. A terminal obtains a business message from a server and determines a type of the business message from a real-time type, a timer-setting type, and an instruction-type. When the type of the business message is determined to be the real-time type, the terminal adjusts a sending interval of a heartbeat package as a first pre-set time duration and restores the sending interval of the heartbeat package back to a benchmark time interval after a second pre-set time duration. The first pre-set time duration is greater than the benchmark time interval and less than the second pre-set time duration. The terminal maintains a network link connection with the server based on the sending policy of the heartbeat package to provide a pushing operation of the business message.

Abstract: A method for cleaning a surface of a twin-roller continuous thin strip casting roller, each casting roller of a twin-roller continuous thin strip casting machine using two brush rollers arranged at a top and bottom for cleaning the surface, wherein a rotational direction of one brush roller is the same as the casting roller, a linear speed of the casting roller is constant and greater than a rotational speed of the casting roller, and a roller surface cleaning device controls a distance or pressure between the brush rollers and the casting roller by a position control device fixed on a casting roller bearing seat, which controls the flattening amount to be within 1-10 times of an average pit depth of a casting roller face.

Abstract: Methods, terminals, and systems for pushing information are provided. A terminal obtains a business message from a server and determines a type of the business message from a real-time type, a timer-setting type, and an instruction-type. When the type of the business message is determined to be the real-time type, the terminal adjusts a sending interval of a heartbeat package as a first pre-set time duration and restores the sending interval of the heartbeat package back to a benchmark time interval after a second pre-set time duration. The first pre-set time duration is greater than the benchmark time interval and less than the second pre-set time duration. The terminal maintains a network link connection with the server based on the sending policy of the heartbeat package to provide a pushing operation of the business message.

Abstract: A method for cleaning a surface of a twin-roller thin-belt continuous casting roller, wherein each casting roller of the twin-roller thin-belt continuous casting machine comprises two brush rollers in an upper and lower arrangement for cleaning the surface thereof, wherein a rotational direction of at least one brush roller is as same as a casting roller, and the linear speed of the casting roller is constant and greater than its rotational speed; and a roller surface cleaning device controls the distance or the pressure between the brush rollers and the casting roller by a position control device fixed on a casting roller bearing seat, and it controls the flattening amount in 1-10 times of the average pit depth on the casting roller face after being brushed, so as to ensure cleaning efficiency.

Abstract: A composite steel plate in which at least two steel sheets are rolled to form a plate. One of the sheets has a composition that varies in a depthwise direction between nanocrystalline and micron grained. The plate is made by treating a steel sheet to produce a composition in the sheet that varies in a depthwise direction of the sheet between nanocrystalline and micron grained, stacking the treated sheet with at least one other steel sheet and rolling the sheets to form the plate.

Abstract: A composite steel plate includes at least two steel sheets rolled to form a plate. One of the sheets has a composition that varies in a depthwise direction, between nanocrystalline and micron grained. The plate is made by treating a steel sheet to produce a composition in the sheet that varies in a depthwise direction of the sheet between nanocrystalline and micron grained, stacking the treated sheet with at least one other steel sheet, and rolling the stacked sheets to form the plate.

Abstract: A composite steel plate includes at least two steel sheets rolled to form a plate. One of the sheets has a composition that varies in a depthwise direction, between nanocrystalline and micron grained. The plate is made by treating a steel sheet to produce a composition in the sheet that varies in a depthwise direction of the sheet between nanocrystalline and micron grained, stacking the treated sheet with at least one other steel sheets and rolling the stacked sheets to form the plate.