七种常用科研设备介绍：光学显微镜、电子天平、维氏硬度计等

(1) The optical microscope (OM) is an observation method that falls between the optical microscope and transmission electron microscope. It is used to observe the fiber morphology of objects and obtain information about the structure of samples.

(2) The FC204 electronic balance is an advanced electronic balance that combines precision, stability, multifunctionality, and automation, and can meet the requirements of laboratory quality analysis.

(3) The HV-1000A Vickers hardness tester applies pressure to the surface of the workpiece through a stepper motor, and then measures the length of the diagonal of the indentation with a reading microscope. The Vickers hardness is then calculated using a conversion relationship between the diagonal and the test force.

(4) The handheld grinder is used for various mechanical manufacturing and repair work, including removing burrs, chamfering, grinding, cleaning burrs and oxide scales, grinding welds, sanding, polishing, and other tasks.

(5) The WZM experimental ball mill is a critical equipment used for grinding materials after they are crushed. The ball mill is widely used in various production industries, such as cement, silicate products, new building materials, refractory materials, fertilizers, black and non-ferrous metal beneficiation, and glass ceramics, for dry or wet grinding of various ores and other grindable materials.

(6) The powder feeder is a single-cylinder gas-carrying powder feeder used for the pneumatic conveying of powder materials, mainly applicable to applications such as thermal spraying, laser melting, and 3D printing.

(7) The DK-320T wire cutting machine mainly consists of a machine tool, a numerical control system, and a high-frequency power supply. The numerical control system is composed of a single-chip microcomputer, a keyboard, and a frequency detection system, and has functions such as gap compensation, linear interpolation, circular interpolation, and automatic wire break processing. It is capable of cutting materials such as high-strength, high-toughness, high-hardness, high-brittleness, magnetic materials, as well as small and complex-shaped precision parts.