3results about How to "Precise Density Control" patented technology

The invention discloses an arid region river flow deposition process simulation device and method, the device comprises an experiment water tank, a river simulation assembly, a first water tank and a second water tank, the experiment water tank is provided with an upstream end and a downstream end in the length direction, and the downstream end is provided with at least one water outlet; the riverway simulation assembly is arranged in the experimental water tank and comprises a first simulation layer and a second simulation layer which are sequentially arranged in a stacked mode in the vertical direction, the first simulation layer is formed by laying at least one of multiple first filling sediments with different components and / or thicknesses, and a channel with an upward notch is formed in the middle of the first simulation layer; the channel is provided with a water inlet close to the upstream end and a water outlet close to the downstream end, and the second simulation layer is formed by laying at least one of a plurality of second filling sediments with different components and / or thicknesses; the first water tank is connected with a water inlet of the channel; the second water tank is connected with a water outlet of the experimental water tank; therefore, the accuracy and repeatability of the experiment are improved, and the application range is expanded.

The present invention discloses a DIC speckle preparation method and a method for characterizing local strain in a micro-area of ​​a metal material. The DIC speckle preparation method comprises the following steps: polishing the surface of the sample to be tested until the surface is bright and scratch-free; placing the sample in a scanning electron microscope, bombarding the sample with an electron beam to produce uniform and clear speckles on the surface of the sample, thereby obtaining speckles for measuring the local strain distribution characteristics of the material. The present invention only requires a scanning electron microscope to complete the preparation of the speckle, and after the sample is prepared with the speckle, it will not interfere with the collection of other signals on the surface to be tested, and can simultaneously meet the characterization requirements of the material such as SEM and EBSD, thereby realizing the effective combination of EBSD technology and DIC.

The invention relates to a dense medium suspension density control method, device and equipment, a medium and a product, and is applied to the technical field of dense medium coal separation. According to the method, state data of middling coal are obtained, and the state data at least comprise ash content data; based on the ash content data, the quality deviation degree of the middling coal is determined, and the quality deviation degree is used for measuring the raw material quality of the middling coal; determining a density adjustment parameter based on the quality deviation degree; and regulating and controlling the density of the dense medium suspension based on the density regulation parameter. According to the quality deviation degree of the middling coal, the influence of different raw material quality conditions of the middling coal on the dense medium separation result can be considered, and therefore the density of the dense medium suspension liquid can be accurately regulated and controlled. Therefore, the density control accuracy of the dense medium suspension can be improved.