The cemented carbide density tester can be used in the density detection of powder metallurgy and alloy products. It adopts the Archimede principle, which has the characteristics of adjustable measurement precision, stable performance, simple operation and durable. With standard RS-232 computer interface, it can easily connect to printer or computer.
The mass of cemented carbide per unit volume generally includes the volume of void in the material, which is usually expressed by g/cm3. The theoretical density of carbide can be calculated according to the following formula when the manufacturer analyzes the alloy density by the manufacturer
d0=100/x/da+y/db+z/dc；
Among them, Da, DB and DC represent the theoretical density of a, B and C respectively, and X, y and Z represent the mass fractions of group A, B and C respectively. The porosity calculation formula in the alloy is:
P=（1-d/d0) × 100%；
Among them, P is porosity in alloy (volume fraction); D is the actual density of the alloy, and d0 is the theoretical density of the alloy.
The determination method of cemented carbide density: when weighing the sample within 10g, the sensitivity of balance shall be 0.1mg, and the sensitivity of samples above 10g shall be 0.001% of the weight; The size of the container shall be selected appropriately. If the sample larger than 10cm3 is put into the liquid, the liquid level shall not rise more than 2.5mm, and the liquid shall be distilled water or deionized degassing water.
Density is an important quality index of cemented carbide. Under the condition of certain composition, the density reflects the structure of the alloy. When the porosity of the alloy is large or free carbon exists, the density is low. Occurs in the alloy η The density is high at the phase time. The main factors affecting the porosity and density of the alloy are insufficient wet grinding time, low density of blank pressing, incomplete degassing, insufficient sintering temperature and time, and mixing of impurities.
The cemented carbide density tester has high accuracy in the alloy density measurement, which is your choice!
