The application of tungsten-nickel-iron alloy in precision instrument counterweights is a typical embodiment of its high-density characteristic, which is crucial to ensuring the measurement accuracy and operation stability of instruments. Precision instruments such as spectrometers and ellipsometers need to be in a highly stable state during operation, and any tiny center of gravity shift or vibration may lead to measurement errors. Tungsten-nickel-iron alloy, with a high density of 16.5-18.7g/cm³, can achieve precise weight configuration in a very small space. By being installed in key parts of the instrument (such as the base, beam or moving parts), it adjusts the overall center of gravity to the ideal position, offsetting the interference of the external environment (such as ground vibration, air flow) on the instrument.
In design, these counterweight components usually adopt a modular structure, and the weight can be flexibly increased or decreased according to the instrument model and use scenario to meet the needs of different accuracy levels. For example, in semiconductor testing equipment, the counterweight of the wafer inspection platform needs to be accurate to the gram or even milligram level. The uniform density and processability of tungsten-nickel-iron alloy enable it to be made into counterweights with extremely high precision, ensuring that the inspection platform remains stable during high-speed movement and positioning, avoiding detection deviations caused by center of gravity shift.
In addition, the alloy has good chemical stability, and is not easy to oxidize or corrode in the constant temperature and humidity environment of the laboratory, which can maintain weight stability for a long time, reducing the frequency of instrument calibration caused by counterweight changes. Its good mechanical properties also ensure that the counterweight components are not easy to be damaged during instrument transportation and installation, further improving the reliability and service life of precision instruments.
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