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Wide-range magnetic field viscometer for high-temperature melt, and method for measuring viscosity by using same

A high-temperature melt and wide-range technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of limited measurement range and fluid types, and achieve the effect of short measurement period and high precision

Inactive Publication Date: 2013-01-16
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its measurement range and fluid types are limited

Method used

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  • Wide-range magnetic field viscometer for high-temperature melt, and method for measuring viscosity by using same
  • Wide-range magnetic field viscometer for high-temperature melt, and method for measuring viscosity by using same
  • Wide-range magnetic field viscometer for high-temperature melt, and method for measuring viscosity by using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Measure the viscosity of tap water under different magnetic fields:

[0045] (1) Place the sample water in the sample holding device and lower it to the position of the heating body;

[0046] (2) Evacuate the measuring cylinder, fill it with argon, and heat it to 30-50℃ for 30min;

[0047] (3) Rotate the worm to select the magnetic induction intensity of the magnetic field.

[0048] (4) Turn on the stepping motor, the rotating shaft drives the sample holding device to rotate, the He-Ne laser outside the instrument emits laser light and irradiates the optical element on the rotating shaft, and the laser light is reflected back to the detector through the optical element, according to the incident light and reflected light The time interval of the rotation decay rate is measured, and then the corresponding viscosity value is obtained according to the calculation formula (I) of the rotation decay rate and viscosity,

[0049] v = ...

Embodiment 2

[0054] Viscosity values ​​of Al-0.5%Fe alloy melt under different magnetic field environments:

[0055] (1) Place the Al-0.5%Fe alloy sample in the sample holding device and lower it to the position of the heating body;

[0056] (2) Evacuate the measuring cylinder, fill it with argon protective gas, heat it to 875 °C for 30 minutes and then measure it, and then cool down every 20 °C, and each measurement temperature point needs to be kept warm for 30 minutes;

[0057] (3) Rotate the worm to select the magnetic induction intensity of the magnetic field; respectively select the magnetic induction intensity as: 0G, 420G, 650G, 880G

[0058] (4) Turn on the stepping motor, the rotating shaft drives the sample holding device to rotate, the HeNe laser outside the instrument emits laser light and irradiates the optical element on the rotating shaft, and the laser light is reflected back to the detector through the optical element, according to the time of incident light and reflected...

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Abstract

The invention relates to a wide-range magnetic field viscometer for a high-temperature melt, and a method for measuring viscosity by using the same. The viscometer comprises a measuring barrel and a stepping motor disposed above the measuring barrel, wherein the stepping motor is connected with a ceramic hanging thread through a rotating shaft; the lower end of the ceramic hanging thread is connected with a sample-holding apparatus in the measuring barrel; the rotating shaft is provided with an optical measuring system for measuring a rotational attenuation rate of the rotating shaft; a heater for increasing the temperature of the sample is disposed in the measuring barrel; the outer of the measuring barrel is sleeved with a horizontal ring-shaped magnetic field apparatus to make the position of the heater disposed in the magnetic field; the lower portion of the horizontal ring-shaped magnetic field apparatus is fixed on a lifting system to regulate the position of the magnetic field; and the measuring barrel is provided with a cooling system and an evacuating device. The viscometer can accurately measure viscosity values of various liquid materials in a temperature range of -30 DEG C-1700 DEG C under different magnetic fields, greatly increases the measured viscosity range to 0.1 cp-100 cp (mPa.s), is short in measuring period, and has high precision.

Description

technical field [0001] The invention relates to a wide-range high-temperature melt magnetic field viscometer in the field of experimental testing, in particular to an instrument and a testing method capable of measuring the liquid viscosity of various materials under different temperature and different magnetic field conditions. Background technique [0002] At present, there are a variety of instruments and equipment for measuring liquid viscosity at home and abroad, but most of them are used to measure the viscosity of liquids at room temperature under natural conditions. There are relatively few instruments for measuring viscosity of high-temperature melts, especially in high-temperature environments, such as testing the viscosity of metal and steel melts. , which puts forward higher requirements for instruments and equipment. The widely used high-temperature melt viscometers are rotational viscometers and rotational vibration type high-temperature melt viscometers. Howev...

Claims

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Application Information

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IPC IPC(8): G01N11/00
Inventor 刘建同边秀房张凯
Owner SHANDONG UNIV
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