· Home · Table of Contents · Industrial Plant & Structures

Remote control of temperature influence on steel skeletons of industrial buildings and bridge cranes K.Yeryomin, I. Zemljanova Magnitogorsk State Technical University Russia. Contact

The largest number of sources of high temperature in ferrous metallurgy are blast furnaces, steel melting furnaces, bessemer converters and steel making shops.

Steel skeletons Magnitogorsk Metallogical Plant, Zlatoust Metallogical Plant (Russia) and bridge cranes (Q = 210) have been the objects of experiments.

The surface temperature of elements of steel skeletons was tested with the help of high-temperature apparatus "Calvin", (which registering boarders are from - 30 °C to + 400 °C).

The temperature was taken at different periods of technological processes in summer and in winter. The results of the experiments were used in "STATISTICA' program. There were drawn graphical diagrams which showed the changes of temperature depending on the hight and length of the shops and the hight of crane girders and main girders of bridge cranes.

Conclusion:

1. The character of temperature changes of identical types of skeleton elements (columns, crane girders, trusses) and fundamental constructions of bridge cranes is the same and doesn't depend on heating.
2. The heating temperature of skeleton elements of shops varies from + 20 °C to + 180 °C.
3. Crane girders, lower belts of trusses and main girders of bridge cranes (which are situated near the stocks of slabs) are mostly subjected to influence of high temperature. The temperature of crane girders reaches + 120 °C. The temperature of main girders of bridge cranes reaches + 140 °C.
4. The range of temperature changes during technological operations is + 85 °C ¸ 100 °C.
5. Heating intensity of skeletons and bridge cranes depends on how far they are situated from the sources of technological heat radiation.

© AINDT , created by NDT.net

|Home|    |Top|