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Method for measuring liquid level of tundish

A technology of liquid level measurement and tundish, which is applied in the configuration of indicating equipment/measuring equipment, manufacturing tools, metal processing equipment, etc., and can solve problems such as tundish waste, negative impact on good billet rate, and potential safety hazards. To achieve the effect of reducing waste in the middle package, eliminating over-melting and measurement deviation problems, and reducing loss

Inactive Publication Date: 2012-10-17
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the oxygen tube is used for measurement, on the one hand, the operator needs to stand on the upper surface of the cover and insert the oxygen tube to the position to be detected, so there is a certain potential safety hazard; on the other hand, due to the temperature of the molten steel and the Due to the influence of slag, there will be over-melting phenomenon, which will cause measurement deviation
Affected by this measurement deviation, qualified molten steel will eventually become tundish waste, which will have a direct negative impact on the yield of slabs

Method used

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  • Method for measuring liquid level of tundish

Examples

Experimental program
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Effect test

Embodiment 1

[0021] 1. Make ruler 3: Process one end of a ￠20×1.3mm steel pipe with external thread, and engrave the length mark in centimeters from the other end of the steel pipe. The length of the scale 3 and the length of the marked part shall be determined according to the specifications of the tundish 1 and the height of the molten steel level.

[0022] 2. Making buoy 2: Make a cuboid with a size of 100×80×50 mm from refractory materials, process a threaded ruler hole matching with the thread of the scale 3 at the center of the large surface of the cuboid, and coat the surface of the cuboid with zirconia. The physical and chemical indicators of the finished buoy 2 are: MgO86wt%; refractoriness 1680°C; bulk density 3.6g / cm 3 . To ensure that the buoy 2 is not melted, but also can always stay on the contact surface between the covering agent 6 and the molten steel 7.

[0023] 3. Make the positioning cover plate 4: Cut out a steel plate with a size of 200×150×20mm, process a ￠22mm po...

Embodiment 2

[0029] 1. Make ruler 3: Process one end of a ￠22×1.35mm steel pipe with external thread, and engrave the length mark in centimeters from the other end of the steel pipe.

[0030] 2. Making buoy 2: Make a cuboid with a size of 115×85×55mm from refractory materials, process a threaded ruler hole matching with the thread of the scale 3 at the center of the large surface of the cuboid, and coat the surface of the cuboid with zirconia. The physical and chemical indicators of the finished buoy 2 are: MgO89wt%; refractoriness 1700°C; bulk density 3.9g / cm 3 . To ensure that the buoy 2 is not melted, but also can always stay on the contact surface between the covering agent 6 and the molten steel 7.

[0031] 3. Make the positioning cover plate 4: Cut out a steel plate with a size of 210×160×22mm, process a ￠23mm positioning hole at the center of the steel plate, and process a bolt hole on both sides of the steel plate.

[0032] 4. Open a 130×105mm rectangular hole on the cover 5, an...

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Abstract

The invention provides a method for measuring liquid level of tundish. The method comprises the following steps of: connecting the other end of a scale with a length marker to a refractory material buoy with the surface being plated with zirconium oxide; feeding a buoy and the scale into a contact surface between a covering agent and molten steel through a rectangular hole in a tundish cover; dropping a locating cover plate with a central locating hole and a bolt hole at a position covering the rectangular hole of the tundish cover and fixing by bolts; and reading the length displayed by the scale to obtain the depth of the molten steel. The method for measuring the liquid level of the tundish, disclosed by the invention, can not only effectively eliminate problems of super-melting and measurement deviation in an oxygen pipe using process and reduce tundish wastes, but also have fixed position of the buoy, exact measurement result and audio-visual scale display, and can exactly measure and feed back the liquid level of the tundish in real time so as to provide reliable evidence for pouring stoppage and deceleration, thus the loss in a pouring stoppage process is largely reduced, the yield of the molten steel is increased, and the personal safety of operators can be ensured at the same time.

Description

technical field [0001] The invention belongs to the technical field of steelmaking technology, and in particular relates to a method for measuring the liquid level position of molten steel in a tundish. Background technique [0002] At present, the tundish stops pouring time after the molten steel tank stops pouring, and the oxygen tube is inserted into the tundish to measure the residual weight of molten steel in the tundish every time a period of pouring, and after the measurement, the pourer in front of the machine is notified of the weight of the stopped pouring. As a reference for stopping pouring and reducing speed. [0003] Since the oxygen tube is used for measurement, on the one hand, the operator needs to stand on the upper surface of the cover and insert the oxygen tube to the position to be detected, so there is a certain potential safety hazard; on the other hand, due to the temperature of the molten steel and the Due to the influence of slag, there will be ove...

Claims

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Application Information

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IPC IPC(8): B22D11/18B22D2/00
Inventor 安连旗温铁光张越臧绍双辛国强张相春田勇简龙郭猛毛志勇孙艳霞
Owner ANGANG STEEL CO LTD
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