The Mechanical Properties Of Optical Glass Are Related To Density And Hardness
The mechanical properties of optical glass are related to density and hardness
The mechanical properties of optical glass include: the density of optical glass; the hardness of optical glass; optical glass brittleness; optical glass tensile strength, compressive strength; optical glass elasticity. Division I in the process of the main concern about the hardness of optical glass.
The hardness of the optical glass can be expressed by the microhardness and relative grinding hardness, relative to the hardness of grinding in Japan, Taiwan enterprises also known as "wear degree"
Relative grinding hardness refers to the same grinding conditions, the measured glass relative to the standard glass K9 grinding hardness. The measurement method is carried out according to the method stipulated in GB / T7962.19. The ratio of the abrasive amount (volume V0) of the standard glass K9 sample to the grinding amount (volume V) of the tested glass sample is the relative grinding of the measured glass hardness.
Fa = V0 / V = (W0 /? 0) / (W /?)
Where: W0, W, respectively, for the standard glass and measured glass grinding weight loss, ρ for the density.
Wear degree = relative grinding hardness × 100
Above the acid resistance, water resistance, wear and other indicators in the operating standard book are marked on the characterization of glass processing characteristics. Need to be carefully understood.