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[ Hot Focus on Chemical Machinery and Equipment Network ] Glass viscosity is one of the important physical properties of glass, which is mainly determined by the composition, structure and temperature of the glass
.
Glass viscosity is one of the most important parameters in glass production and processing, and is closely related to important processes such as glass melting, feeding, forming, and annealing
.
In glass production, enterprises usually determine the production process parameters and judge whether the production is stable or not based on the corresponding relationship between viscosity and temperature (that is, the viscosity-temperature curve)
.
Chemical machinery and equipment network hotspots focus on chemical machinery and equipment.
Glass viscosity is one of the most important parameters in glass production and processing, and is closely related to important processes such as glass melting, feeding, forming, and annealing
.
In glass production, enterprises usually determine the production process parameters and judge whether the production is stable or not based on the corresponding relationship between viscosity and temperature (that is, the viscosity-temperature curve)
.
Glass viscosity measurement can understand the influence of glass composition and process conditions on glass production and processing, and provide experimental basis for the optimization of production process
.
In addition, viscosity is also an indispensable parameter in the development and production of new glass products, as well as in glass sealing applications and thermal processing
.
.
In addition, viscosity is also an indispensable parameter in the development and production of new glass products, as well as in glass sealing applications and thermal processing
.
There are many methods for measuring glass viscosity, mainly including rotational viscometer method, fiber elongation viscometer method, settling rod viscometer method, bending beam method, falling ball method, indentation method,
etc.
Different methods have different requirements for instruments, samples, and measurement steps
.
The method, steps and requirements for the determination of glass viscosity are clearly defined in a standard form, which plays a significant role in standardizing the determination method and improving the reliability of data, and is also an effective measure to improve the control efficiency, production stability and product quality of glass production
.
etc.
Different methods have different requirements for instruments, samples, and measurement steps
.
The method, steps and requirements for the determination of glass viscosity are clearly defined in a standard form, which plays a significant role in standardizing the determination method and improving the reliability of data, and is also an effective measure to improve the control efficiency, production stability and product quality of glass production
.
At present, there is no general method standard for the determination of glass viscosity by rotational viscometer in China
.
On August 30, 2021, the National Standards Committee issued the national standard formulation task of "Determination of Glass Viscosity by Rotational Viscometer Method", and the plan number is 20213453-T-607
.
Qilu University of Technology, Shandong Linuo Special Glass Co.
, Ltd.
, and National Light Industry Glass Product Quality Supervision and Testing Center, as the main drafting units, drafted the draft standard for comments
.
.
On August 30, 2021, the National Standards Committee issued the national standard formulation task of "Determination of Glass Viscosity by Rotational Viscometer Method", and the plan number is 20213453-T-607
.
Qilu University of Technology, Shandong Linuo Special Glass Co.
, Ltd.
, and National Light Industry Glass Product Quality Supervision and Testing Center, as the main drafting units, drafted the draft standard for comments
.
The standard drafting team conducted a survey on glass production enterprises, end users and the development of the industry.
On the basis of experimental verification, the second part of ISO7884, the international standard series for glass viscosity, was revised and adopted, and the terminology for measuring glass high temperature viscosity by the rotational viscometer method was specified.
and definitions, test principles, test equipment, tests, results and test reports
.
On the basis of experimental verification, the second part of ISO7884, the international standard series for glass viscosity, was revised and adopted, and the terminology for measuring glass high temperature viscosity by the rotational viscometer method was specified.
and definitions, test principles, test equipment, tests, results and test reports
.
The test method involved in the standard reflects the viscous characteristics of the glass by the speed of rotation of the rotor of the rotational viscometer in the glass liquid with Newtonian fluid behavior under the action of the driving torque, and the result is the dynamic viscosity of the glass or a certain temperature.
Viscosity-temperature curve of molten glass in the range
.
Viscosity-temperature curve of molten glass in the range
.
The formulation of the standard regulates the operation of measuring the high temperature viscosity of glass with a rotational viscometer, improves the composition of the method standard in the glass standard system, and fills the blank of the domestic glass high temperature viscosity detection method
.
It has important guiding significance for improving the domestic testing level and testing methods, and also plays an important role in improving the production technology and product quality of China's glass industry
.
.
It has important guiding significance for improving the domestic testing level and testing methods, and also plays an important role in improving the production technology and product quality of China's glass industry
.
Original title: There is a new standard recommended national standard for glass viscosity measurement method for comments
