3 results about "Electronic analytical balance" patented technology

The invention discloses a preparation method capable of reducing the grain size and segregation layer of a 6-series alloy, and relates to the technical field of metal material preparation, the preparation method comprises the following specific steps: S100, preparing raw materials; weighing an aluminum ingot, a pure magnesium ingot and a ferrosilicon alloy according to the standard components of the 6-series alloy by using an electronic analytical balance, wherein the weighing error of each raw material is + / -0.01%; through the magnetic field constraint solidification technology, the alternating magnetic field with the specific strength and frequency is applied in the 6-series alloy solidification process, alloy grains are effectively refined, formation of a segregation layer is reduced, limitation of the traditional solidification technology is broken through, uniform distribution of solute atoms is promoted through the magnetic field effect, and the alloy quality is improved. Therefore, the overall uniformity and the mechanical property of the alloy are improved, the precise control and the high uniformity of the magnetic field intensity are ensured by combining the magnetic field constraint solidification with the superconducting magnet, and a reliable means is provided for microstructure optimization of an alloy material.

The application discloses a preparation method of a sheet-shaped sodium-ion battery positive electrode material sodium copper iron manganese oxygen, which comprises the following steps: step one, accurately weighing raw materials required for synthesizing the sodium-ion positive electrode material by using an electronic analytical balance, and adding the raw materials into a mixed solution of acrylic acid and water under the condition of magnetic stirring; step two, placing the mixed solution into a constant-temperature magnetic stirrer, and heating to perform constant-temperature reaction under the condition of magnetic stirring, and adding an ammonium peroxodisulfate solution as an initiator during the constant-temperature reaction; step three, after the constant-temperature reaction is completed, the solution gradually changes into a gelatin-like gel, the reaction-completed gel is placed into an oven for drying, the dried material is loaded into a pot for pyrolysis, and the pyrolyzed material is subjected to crushing treatment to obtain a semi-finished product powder; step four, loading the semi-finished product powder into a pot and sintering; and step five, after the sintered material is discharged, the material is subjected to crushing, magnetic removal, packaging and detection to obtain a finished product.

The invention relates to the technical field of electronic analytical balances, and particularly discloses an electronic analytical balance for mass determination, which comprises a balance main body, a weighing sensor is arranged in the balance main body, a weighing cup is placed in the balance main body, and the weighing cup is positioned on one side of the weighing sensor; the gooseneck flask is internally used for bearing a detected medicine; the clamping mechanism is positioned above the weighing sensor; when the device is used, a gooseneck flask and a curved neck pipe are fixed and then placed in the center of a weight sensor, the gooseneck flask is clamped through the clamping mechanism, the gooseneck flask is turned over, a push rod is adjusted to the position above the gooseneck flask through a limiting piece, and after weighing is completed, the gooseneck flask is placed in the center of the weight sensor. According to the electronic analytical balance, part of medicine in the gooseneck flask can be discharged into the weighing cup in the electronic analytical balance body through the liquid discharging mechanism, the mass of the medicine in the weighing cup can be obtained after the medicine is weighed again, the gooseneck flask does not need to be taken out when the electronic analytical balance is used, and weighing is very convenient.