BML-II Glas Oppervlaktespanning Masjien

Beskrywing

BML-II Glas Oppervlaktespanning Masjien

Inleiding

The instrument uses the glass wire shrinkage method to measure the surface tension in the softening temperature range. The test principle of the instrument is that the glass wire of a certain length and diameter is freely suspended in an electric furnace at a certain temperature, so that the glass wire is heated locally, in the process of heating to heat preservation, the glass wire is initially expanded by heat, and then the glass wire in the furnace is softened under the action of surface tension and begins to shrink, resulting in the formation of an olive-shaped nodule on this section of glass wire. When the surface tension of the softened part of the glass reaches a balance with the weight of the glass wire at the lower end, the nodule no longer increases. By measuring the weight of the glass wire at the lower end, the surface tension of the glass at the holding temperature can be calculated. The device is used to test and analyze the surface tension of glass and fiber in scientific research and teaching field.

BML-II Glas Oppervlaktespanning Masjien

Belangrikste tegniese parameters

1. Vertical tubular electric furnace, furnace tube size of 30×300mm.

2. The maximum temperature 1200℃, the use temperature 1000℃.

3. K type index number temperature measuring thermocouple.

4. Furnace temperature control ≤±1℃, the average temperature zone length in the furnace: 100mm.

5. Thyristor voltage regulation, intelligent temperature controller, PID adjustment, program temperature, can be arbitrarily set program segment, holding time.

6. Sample preparation: the glass rod is drawn into a glass wire with a diameter of 0.17 ~ 0.27mm, requiring the full length of the glass wire to be round, uniform thickness, diameter error is not greater than 0.05mm, and the length is determined by test.

7. Kragtoevoer: 220V, power ≤2KW