DD220854A1 - ADDITIONAL UNIT FOR THE OPTICAL TEMPERATURE MEASUREMENT OF HOT STEEL LINE - Google Patents

Abstract

The invention relates to a Zusatzgeraet for optical temperature measurement hot steel road. This device can be used in optical temperature measurement in continuous casting plants and hot rolling mills to remove the scale at the respective measuring point and thus to ensure accurate measured values. The invention aims for a longer period of time to achieve a thorough descaling. The real task is to create an additional device that allows automatic adjustment and ensures the self-cleaning effect of steel discs. According to the invention, a bearing flange, in which a guide tube is arranged so as to be axially adjustable, is fastened to the spray chamber wall. Therein, a drive shaft is mounted, which is driven at one end by a drive motor. At the other end, a base plate is arranged, which carries in pairwise mounted steel discs in holding forks. By attached to the injection chamber wall and the mounting flange of the drive motor tension springs, the steel discs are pressed to descaling to the hot steel strand. Fig. 1

Description

For this 2-page drawings

Field of application of the invention

The invention relates to an accessory for the optical temperature measurement of hot steel strands, wherein the temperature is hotter _; scale-free steel strands are measured by means of optical temperature measuring devices. Primarily in the continuous casting of steel strands with square or rectangular cross-section, but also during hot rolling of steel, it is useful to adjust the casting, rolling and cooling parameters, the surface temperature of hot steel strands using optical or non-contact temperature measuring to determine exactly. However, when cooling hot steel strands on the surface, scale layers develop, which falsify the results of the optical temperature measurement. For exact temperature measurement, it is therefore necessary to remove at the respective measuring point of the moving steel strand, the scale layers' by means of suitable measures. . '/. ''

Characteristic of the known technical solutions

For the above purpose, it is already known to use moving or rotating brushes, which are covered with steel wire ends. In this case, it is disadvantageous that the brushes become clogged with scale after a certain period of operation and thus the cleaning effect is substantially worsened.

Furthermore, it is mainly known during hot rolling to desalt the rolling stock with water, wherein the water is applied by means of counter to the rolling direction and obliquely employed spray nozzles for blowing off the scale.

This method is unsuitable for continuous casting in the optical temperature measurement, since in this case a falsification of Temperaturmeßwerte occurs.

Finally, it is also known to use scraper or scraping devices. These have the disadvantage that they wear out relatively quickly and must be readjusted relatively often. In addition, they must be reworked relatively often due to the high wear.

Finally, it is also known to arrange obliquely to the direction of the moving steel strand steel discs which are pressed by articulated levers and compression springs to the strand and scrape the scale, with a self-rotation of the steel discs occurs, which leads to an increase in the service life of this cleaning device. However, this device is unsuitable for Stahlstranggießanlagen, since due to the low casting speed, the self-rotation of the steel discs and thus the self-cleaning effect is severely limited.

Object of the invention

The invention aims to avoid the disadvantages of the known devices and to provide an accessory for the optical temperature measurement, which allows a thorough descaling of the respective measuring point over a longer period. > ".

Explanation of the essence of the invention. '.'. ·

The invention has for its object to provide an attachment that allows automatic adjustment and intensifies the scraping and self-cleaning effect. "

According to the invention this object is achieved in that seen in the direction of passage of the steel strand, an accessory is arranged in front of the optical temperature measuring device, wherein in an attached to the spray chamber wall bearing flange, an axially displaceable guide tube is arranged, which receives a bearing mounted in ball bearings drive shaft, which on their the steel strand side facing a base plate having resiliently mounted therein, steel discs carrying Haltegabelri and is coupled at the other end with a drive motor, wherein the steel discs are pressed via the drive shaft by the attached to the mounting flange of the drive motor and the spray chamber wall tension springs rotating to the strand surface. According to the invention at least two holding forks are further arranged on the base plate, in which preferably steel wheels are mounted in pairs, whose planes with the associated radius of the base plate include a small Winkler.

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.Ausführungsbeispiel: '' · /

The additional device according to the invention for optical temperature measurement will be explained in more detail with reference to an exemplary embodiment. ·, -. '.\ '. " ,    '' '..' '.. ·.' '.

1 shows a side view of the additional device

Fig. 2: a plan view of the arranged on the base plate steel discs. - ,

At the injection chamber wall 1 of a continuous casting a bearing flange 2 is fixed, iri the axially displaceable guide tube 3 is arranged. For this purpose, a drive shaft 5 is mounted by means of ball bearings 4, which carries at the end facing the steel strand a base plate 6, on which a plurality of resiliently mounted retaining forks 8 are arranged. In the holding forks 8 steel disks 7 are mounted in pairs, which remove the scale from the respective measuring point as Schabrollen. On the other side, the drive shaft 5 is coupled to a drive motor 9, the mounting flange 10 is pulled by means of the tension springs 11 to the spray chamber wall. Here, the base plate 6 is pressed with the steel discs 7 rotating to the steel strand. Figure 2 shows that the paired steel discs 7 include a small angle with the associated radius of the base plate. By driven in the measuring mode, rotating base plate and the self-rotation of the steel discs 7 an intensive cleaning effect on the steel strand is achieved. In addition, a self-cleaning effect of steel discs occurs, with the constant change of the attack surfaces and long service life can be achieved.

Claims (2)

Invention claims: 1. Additional device for optical temperature measurement of hot steel strands, wherein the temperature of hot, tinder-free beam strands is measured by optical temperature measuring, characterized in that seen in the direction of passage of the steel strand in front of the optical temperature measuring device, an attachment is arranged, wherein in one of the spray chamber wall (1) attached Bearing flange (2) an axially displaceable guide tube (3) is arranged, which receives a ball bearings (4) mounted drive shaft (5) on its steel strand side facing a base plate (6) resiliently mounted therein, steel discs (7) bearing Holding forks (8) and is coupled to the other end with a drive motor (9), wherein the steel discs (7) via the drive shaft (5) by on the mounting flange (10) of the drive motor (9) and the injection chamber wall (1) attached tension springs (11) are pressed in rotation on the strand surface. ' 2. Additional device according to item 1, characterized in that on the base plate (6) at least two holding forks (8) are arranged, in which pairs steel discs (7) are mounted, whose planes with the associated radius of the base plate (6) has a small Include angle. ,