The carbide density tester is suitable for density testing in powder metallurgy and alloy products. Based on Archimedes' principle, it features adjustable measurement accuracy, stable performance, simple operation, and long-lasting durability. It includes a standard RS-232 computer interface for easy connection to printers or computers.
The mass per unit volume of carbide generally includes the volume of voids within the material and is commonly expressed in g/cm³. Manufacturers of carbide density testers calculate the theoretical density of alloys using the following formula:
d0 = 100 / (x × da + y × db + z × dc)
where da, db, and dc represent the theoretical densities of elements A, B, and C, respectively; x, y, and z denote the mass fractions of elements A, B, and C, respectively. The porosity in the alloy is calculated using the formula:
P = (1 - d/d₀) × 100%;
where P is the porosity in the alloy (% by volume); d is the actual density of the alloy; and d₀ is the theoretical density of the alloy.
Methods for determining the density of cemented carbides stipulate: When weighing samples under 10g, the balance sensitivity shall be 0.1mg; for samples over 10g, sensitivity shall be 0.001% of the weight. Select appropriately sized containers; for samples exceeding 10cm³, liquid level rise upon immersion shall not exceed 2.5mm. Use distilled water or deionized, degassed water as the liquid.
Density is a critical quality indicator for cemented carbide products. Under constant composition, density reflects the alloy's microstructure. Higher porosity or free carbon presence reduces density, while the presence of η-phase increases it. Key factors affecting porosity and density include insufficient wet grinding time, low green compact density, incomplete degassing, inadequate sintering temperature/time, and impurity contamination.
The carbide density tester delivers high accuracy in alloy density measurement—your unparalleled choice!
