Ultra-high temperature viscometer

1、 Product Introduction:

Ultra high temperature viscosity testing system, when the melt temperature reaches 2200Melting at ℃, such as quartz glass, which can test temperatures up to 1800℃～2200℃ is called ultra-high temperature viscosityRotational method for viscosity testing: The viscosity value of SiO ₂ is measured by the torque generated by the continuous rotation of a rotor immersed in the molten material. The torque is proportional to the resistance formed by the viscous drag of the rotor immersed in the molten material, and therefore proportional to the viscosity. The viscosity characteristics of ultra-high temperature quartz are determined.

The sample melting furnace adopts a vacuum graphite heating furnace. The graphite tube is fed with high current at both ends, and the temperature can reach 2500 degrees in a vacuum environment. The sample cup is loaded from the bottom into the middle constant temperature zone of the graphite tube for heating. There are small holes at the top of the furnace body, which facilitate the testing rotor to penetrate into the sample cup groove for testing. As shown in the picture

2、 Function of high temperature viscosity testing system:

1. Measurement of viscosity of high-temperature melt using the rotational force characteristics of hairspring

2. The maximum temperature for use is 2300 ℃

3. High precision temperature control and multiple heating systems

4. Testing under high vacuum or multiple atmospheric environments

5. SMC and SRC rotor parameters can be defined

6. Variable speed and constant torque test

3、 Progressiveness of high-temperature viscosity testing system:

1. The maximum temperature of the system heating element can reach 2300 ℃

2. The maximum vacuum degree of the system can reach 10 ⁻⁴ mbar level

3. The system is equipped with inert gas and reducing gas that are simultaneously introduced

4. The system is equipped with one-way anti reflux control gas function

4、 Technical parameters of high temperature viscosity testing system:

Technical characteristics of ultra-high temperature viscometer:

1) The main head of the high-temperature viscometer adopts the American Bolefei sensor,

2) Viscometer model DV2T

3) 5-inch touch screen display

4) The induction method is continuous induction and non point cutting induction

5) Real time response to viscosity changes, even at low speeds

6) The measurement process can display parameters such as shear rate and shear force

7) Weighing range: 1-5 × 10 ⁷ (cP or unit mPa. s);

8) Viscosity accuracy: ± 1.0%; Comparison with standard samples

9) Speed types: 2500 speeds ranging from 0.01 to 250 RPM;

10) Reproducibility of viscometer: ± 0.2%;

11) Sample size: 8-14ml

12) Temperature range: 500 ℃~2300 ℃

13) Temperature accuracy: 1 ℃

14) Program temperature control, capable of drawing viscosity temperature curves

15) Compliant with international ASTM C 965/ASTM C 1276 standards

16) Temperature probe dual infrared real-time monitoring of sample temperature;

17) Automatic range display;

18) HaTherm software can define rotor parameters SMC and sample cup parameters SRC.

19) Functions such as calculating shear force and shear rate, generating images, and exporting data.

20) Variable speed rheological testing, variable torque continuous testing, and multi-step cyclic testing.

21) Built in options, mathematical model, programmable, set QC upper and lower limits

22) Fluid model Casson, Bingham，Power Lax，Thix Index

23) Characteristics and advantages of vacuum graphite heating furnace: fast heating, high temperature

24) Vacuum can be drawn to introduce a mixture of protective gas and reducing gas into the heating furnace

25) The temperature of the sample can be controlled up to 2500 ℃

26) Programmable Eurotherm controller: programmable 8-stage 16 step temperature setting, temperature control accuracy of 0.1 ℃

27) Adopting dual closed-loop multi loop control, the temperature is more accurate and the heating curve is more stable.

28) Zhuanzhuan adopts high-temperature resistant materials, with an S-shaped hook connected to the sensor at the upper end and a rotor connected to the lower end.

The hollow design of the rotor can be tested more accurately by adding weight ratios according to different materials.

30) The rotor material is tungsten metal, which is resistant to high temperatures and does not stick to oxides at high temperatures.

31) Rotor depth detection, digital scale, accuracy of 0.01 millimeters, and up and down travel of 100 millimeters.

32) The sample is taken and placed using a bottom loading method, which is convenient to operate.