6results about How to "Rapid sample preparation" patented technology

The invention relates to the technical field of ore sample preparation, in particular to an automatic quartz ore chemical analysis sample preparation device which comprises a material table, a sampling table is fixedly arranged on the side wall of the material table, a feeding hopper is fixedly arranged on the front wall of the sampling table, the lower end of the feeding hopper is communicated with a crushing assembly, and a crushing box is arranged on the crushing assembly; a grinding assembly is fixedly arranged on the bottom face of the crushing box, a grinding box is arranged on the grinding assembly, a screening assembly is fixedly arranged on the bottom face of the grinding box, a hollow screening box is arranged on the screening assembly, and a discharging frame is fixedly arranged on the bottom face of the hollow screening box. According to the invention, the crushed ore particles are more uniform, the existence of large ore blocks is reduced, the crushing quality is improved, the continuity and stability of the crushing process are ensured, the grinding effect is improved, the ground quartz ore particles are more uniform and fine, and the graded screening of the ore particles is facilitated; and rapid sample preparation of automatic quartz ore chemical analysis is realized.

The invention belongs to the technical field of polyester film measurement, and particularly relates to a biaxially oriented polyester film thermal shrinkage measurement sampling tool. The tool comprises a marking plate, and a through marking opening is formed in the plate surface of the marking plate. During sampling, the tool is placed at the position of a polyester film needing to be sampled, the polyester film is tightly pressed on a glass table top through the marking plate, the marking tool is used for marking along the marking opening of the marking plate, after marking is completed, the cutting tool is used for cutting along the edge of the marking plate, the tool is moved away, and a marked heat shrinkage sample with the proper size is obtained. The sample preparation speed and efficiency are greatly improved, the operation steps are simplified, and the sample preparation process is quicker, simpler and more convenient.

The utility model discloses a lap joint shear sample preparation tool which comprises a first base, first check blocks are arranged on the two sides of the upper surface of the first base, a first installation groove is defined between the two first check blocks and the upper surface of the first base, and the first installation groove is used for installing a first sample to be bonded; the second base is arranged opposite to the first base, second check blocks are arranged on the two sides of the upper surface of the second base, a second mounting groove is defined between the two second check blocks and the upper surface of the second base, and a second to-be-bonded sample is mounted in the second mounting groove; the first cover plate covers the two first check blocks so as to press the first to-be-bonded sample, after the first to-be-bonded sample and the second to-be-bonded sample are bonded together through the adhesive, a sample preparation worker can use a scraper blade and other tools to scrape off overflowing glue in a bonding area, and therefore rapid sample preparation of the lap joint shear sample is achieved, the sample preparation quality is guaranteed, and meanwhile the sample preparation efficiency is improved. And the sample preparation efficiency is also improved.

This invention provides a method, replica film, and application for directly detecting silicon nitride grain boundary phases. The method includes the following steps: S1, etching a polished silicon nitride ceramic sample with hydrofluoric acid solution; S2, replicating the etched polished surface with a first solvent and a cellulose acetate film to obtain a primary replica; S3, vacuum-depositing a carbon film onto the primary replica to obtain a secondary replica; S4, cutting and attaching the secondary replica film to low-temperature paraffin wax, then dissolving the cellulose acetate in a second solvent; S5, transferring the dissolved secondary replica film to a third solvent, and after the secondary replica film has fully expanded, retrieving it with a copper mesh, drying it, and observing it under an electron microscope. The method provided by this invention can separate the grain boundary phase from the silicon nitride main phase, obtaining the solid grain boundary phase while retaining the morphological outline of the silicon nitride main phase. This method is simple to operate, low in cost, and provides great convenience for studying the influence of grain boundary phases on the mechanical and optical properties of silicon nitride separately.

The present invention provides a vertical shaft frozen soil blasting model test system and a use method. The test system includes a reaction frame, a sample preparation device, a vertical shaft, a freezing device and a monitoring device; a jack is arranged in the middle of the reaction frame; the sample preparation device includes a top cover, a barrel and a base; the inner cavity formed between the vertical shaft and the barrel is used to arrange the frozen soil sample; the freezing device is arranged on the periphery of the vertical shaft; and the monitoring device is used to monitor the vibration propagation law during the frozen soil blasting. The use method of the test system in the present invention is to prepare the frozen soil sample, arrange the detonator and explosives, simulate the excavation by blasting, and collect the blasting vibration data during the blasting process. The test system in the present invention has a simple structure and is detachable, so that rapid sample preparation can be achieved; the triaxial stress loading simulates different ground stresses, and simulation under different excavation conditions can be achieved; and the test system can be used to simulate the vibration law under different blasting schemes and the deformation law of the frozen soil sample and the vertical shaft wall during the cyclic excavation advancement process.

The utility model relates to the technical field of dies, and discloses a dumbbell-shaped sampling cutting die with a flexible glue structure, which comprises an upper pressing plate, a base is movably mounted at the bottom of the upper pressing plate, and a second dumbbell-shaped groove is formed in the outer surface of the inner side of the upper pressing plate. When the dumbbell-shaped blades touch the tops of the second dumbbell-shaped grooves, samples can extrude the dumbbell-shaped containing plates through the dumbbell-shaped convex blocks on the inner sides of the second dumbbell-shaped grooves, and when the dumbbell-shaped containing plates are extruded, the springs on the inner sides of the dumbbell-shaped blades uniformly distributed on the outer surface of the base generate elastic deformation; compared with a traditional device, the device has the advantages that an operator does not need to stretch the hand near a cutter to take a sample, so that the possibility that the operator is scratched by the cutter is greatly reduced, the safety of the operator is effectively guaranteed, meanwhile, the sample can be rapidly prepared, and the device is convenient, rapid and high in efficiency; and the sample can be completely separated from the cutting die.