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BY-II Pendulum Hardness Tester
Equipment Overview:
Pendulum rod hardness tester is a common instrument for measuring the hardness of paint film coating in laboratory. The working principle is as follows: the more soft the coating surface of the fulcrum of the pendulum rod, the faster the attenuation of the pendulum amplitude; Nasprotno, the attenuation is slower. Due to the differences in structure, teža, velikost, swing period and swing amplitude, as well as the complex elastic and viscoelastic changes caused by the interaction between the swing rod and the coating, an effective conversion relationship cannot be established between the measured results of various swing rods. Zato, when determining the hardness of the coated pendulum rod in each product standard, it is indicated that only a certain pendulum rod is used.
BY-II Pendulum Hardness Tester
Equipment Overview:
Pendulum rod hardness tester is a common instrument for measuring the hardness of paint film coating in laboratory. The working principle is as follows: the more soft the coating surface of the fulcrum of the pendulum rod, the faster the attenuation of the pendulum amplitude; Nasprotno, the attenuation is slower. Due to the differences in structure, teža, velikost, swing period and swing amplitude, as well as the complex elastic and viscoelastic changes caused by the interaction between the swing rod and the coating, an effective conversion relationship cannot be established between the measured results of various swing rods. Zato, when determining the hardness of the coated pendulum rod in each product standard, it is indicated that only a certain pendulum rod is used.
Relevant standards: GB/T 1730, ISO 1522, ASTM D4366
BY-II Pendulum Hardness Tester
operating principle
The softer the coating surface of the fulcrum is, the faster the swing amplitude of the pendulum is attenuated. Nasprotno, the attenuation is slower.
BY-II Pendulum Hardness Tester
Tehnični indikatorji:
Konig pendulum rod is triangular frame shape structure, Persoz pendulum rod is square frame shape structure. The main technical indicators of the two pendulum rods are shown in the following table:
| Pendulum type | Konig pendulum | Persoz pendulum |
| Angle of oscillation from beginning to end | 6o~3o | 12o~4o |
| deflectionperiod | 1.4±0.02sec | 1±0.01sec |
| Pendulum mass | 200g | 500g |
| Ball diameter | 5mm | 8mm |
| Swing time on flat glass | 250±10sec | 430±15sec |
| Number of swings on flat glass | 172~185 | 430±15 |
















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