What are the main physicochemical properties of continuous casting slag?
Release time:
2020-07-31
Protective slag It is an important auxiliary material in continuous casting production. Continuous casting protective slag The application of continuous casting protective slag has greatly expanded and improved the varieties of steel used in continuous casting, the types of continuous casting sections, the quality of continuously cast billets, and the continuous casting production rate, making it an indispensable metallurgical auxiliary material.
Before use, the Continuous casting protective slag physical and chemical properties should be determined. The main physicochemical indicators are as follows:
（ 1) Chemical composition: The chemical composition of each grade should be analyzed, and the content of each oxide, including the minimum index, should be within the specified range. Protective slag 1) Chemical composition: The chemical composition of each grade should be analyzed, and the content of each oxide, including the minimum index, should be within the specified range.
（ 2) Melting temperature: The mineral slag powder is made into a 35 mm sample, and a special instrument is used to heat the sample to the temperature at which the cylinder becomes a hemisphere. The temperature at which the hemisphere point is reached is defined as the melting temperature.
（ 3) Viscosity: Indicates the fluidity of the molten mineral slag powder. The fluidity of the slag has an important impact on the slag's absorption of inclusions and the lubrication effect of the shell. Usually, the viscosity of the slag below 1300 is measured using a torsion viscometer or a rotational viscometer to compare the fluidity of different Protective slag slag.
（ 4) Melting rate: The melting rate is a measure of the speed of the slag melting process. It is related to whether a stable three-layer structure can be formed on the surface of the mold steel and the required thickness of the liquid slag layer.
The melting rate can be expressed as the time required for a standard sample to completely dissolve in the liquid at a specific temperature (e.g., 1300 or 1400). It can also be expressed by the amount of liquid slag formed per unit area and the time required for a certain weight of Protective slag to be heated to a specified temperature.
（ 5) Spreadability: Indicates the covering ability and uniformity of the powder slag added to the surface of the molten steel. It can be measured by the spreading area of a certain volume of Protective slag powder falling from a specified height onto a flat plate.
（ 6) Moisture: Protective slag Powder is easy to absorb moisture. If the amount of water absorbed exceeds the specified requirement (e.g., 0.5%), the slag powder will agglomerate, and its use efficiency will be greatly reduced.
More about Protective slag questions, please consult Luoyang Turner High Temperature Instrument Co., Ltd.
Related Blog
Scan
Luoyang Turner High Temperature Instrument Co., Ltd.
+86-400-880-7095
Sales (same as WeChat):18695992058
Contact:+86-379-69755886
Address: South Section of Shuangxiang Road, Luoxin Industrial Cluster, Luoyang City, Henan Province
Email:tnkinstrument@163.com
Copyright © Luoyang Tainake High-Temperature Instrument Equipment Co., Ltd. IPV6