In modern technology and industrial fields, high-precision weight measurement is a critical factor in ensuring quality and driving innovation. From microscopic chemical analysis in laboratories to quality inspections on industrial production lines, accurate weight data serves as the foundation for scientific discoveries and production efficiency. In these high-precision scenarios, tungsten alloy weights stand out as essential measurement tools due to their exceptional performance and stability.
CTIA GROUP LTD Tungsten Alloy Weight Images
I. Composition and Properties of Tungsten Alloy Weights
CTIA GROUP LTD tungsten alloy weights use tungsten as the primary component, a metal with unique physical and chemical properties, boasting a melting point of 3422°C—one of the highest among metals—and a density of 19.35 g/cm3, far exceeding that of steel and aluminum. This high density enables tungsten alloy weights to provide significant weight in a smaller volume, meeting the demands of high-precision weighing.
To optimize performance, tungsten alloy is typically alloyed with elements like nickel and copper. Nickel, as a key additive, enhances the alloy's toughness and ductility, forming a uniform solid solution with tungsten to mitigate its brittleness, facilitating the machining of complex-shaped weights. Copper improves the alloy's electrical and thermal conductivity while enhancing corrosion resistance, extending the weight's service life and ensuring weight accuracy remains unaffected by corrosion over long-term use.
Tungsten-nickel-copper alloy weights differ significantly from ordinary weights (stainless steel or cast iron). With a density of 16.5–18.0 g/cm3, they are much denser than ordinary weights (7.2–8.5 g/cm3), resulting in a smaller volume for the same weight. Their tensile strength reaches 800–1500 MPa, compared to 200–800 MPa for ordinary weights, making them more durable and resistant to deformation. The thermal expansion coefficient of 4–6×10??/K is one-half to one-third that of ordinary weights (11–17×10??/K), ensuring dimensional stability under temperature fluctuations and maintaining high-precision measurements. In terms of corrosion resistance, tungsten alloy excels, being oxidation-resistant and salt-spray-resistant, suitable for humid or chemical environments, whereas cast iron weights are prone to rust, requiring additional protection and higher maintenance costs. The non-magnetic property of tungsten alloy makes it ideal for MRI equipment and other magnetically sensitive scenarios, where the magnetic nature of ordinary weights might interfere with precision instruments. Although tungsten alloy is more challenging to process (requiring precise metallurgy) and costs more than the simple casting or machining of ordinary weights, its E1/F1 microgram-level accuracy far surpasses the M1/M2 milligram-level accuracy of ordinary weights, making it the preferred choice for high-precision applications.
CTIA GROUP LTD Tungsten Alloy Weight Images
II. Production Method of Tungsten Alloy Weights
The preparation of tungsten-nickel-copper alloy involves the following steps: first, mixing tungsten oxide powder, nickel oxide powder, and copper oxide powder to create a uniform mixed raw powder; then, reducing the mixed raw powder to form tungsten-nickel-copper mixed powder; next, pressing the resulting powder into a green body; and finally, sintering the green body to produce the tungsten-nickel-copper alloy.
III. Application Fields of Tungsten Alloy Weights
Industrial Inspection and Calibration
In industries such as chemical, electronic, and mechanical manufacturing, tungsten alloy weights are the cornerstone of weight calibration. In the pharmaceutical industry, high-precision weights calibrate balances to ensure accurate raw material ratios, safeguarding drug quality. In electronics manufacturing, weights calibrate weighing equipment to maintain consistency in the weight of tiny components, enhancing product performance. In mechanical manufacturing, weights ensure parts meet design weight standards, guaranteeing equipment operational stability.
CTIA GROUP LTD Tungsten Alloy Weight Images
Scientific Experiment Support
In fields like physics, chemistry, and materials science, tungsten alloy weights provide assurance for high-precision experiments. In gravitational wave detection, weights calibrate equipment to detect minute mass changes; in chemical synthesis, they ensure precise weighing of reactants for correct stoichiometric ratios; in materials research, weights assist in density measurements, supporting new material development with data.
Foundation of Metrology Systems
Tungsten alloy weights are key tools for metrology calibration institutions to establish weight standards. By constructing a standard system with weights of different grades, they calibrate various scales, ensuring measurement accuracy. In commercial electronic scale calibration, weights guarantee fair transactions, upholding the reliability of the metrology system.
