Ladle hydraulic slide runner glidingly stroke converting method

Abstract

A sliding stroke conversion method of a hydraulic ladle sliding nozzle, which belongs to the technology field of hydraulic ladle sliding nozzle continuous casting device, and comprises the following steps: temporarily welding a stroke control module at a position-limiting control section of open / close mold frame of the sliding nozzle mechanism to adjust the sliding stroke from a design stroke to an old stroke; cutting off a temporarily new stroke position limiting control module of ladles that are not circularly used online when completing the sliding stroke reconstruction of the ladle sliding nozzle mechanism to recover the sliding stroke to the design stroke; replacing the oil cylinder stroke in a ladle nozzle preparation region to change an old stroke oil cylinder into a design stroke oil cylinder; adjusting the stroke of the oil cylinder for ladle free-opening of a continuous casting machine by the following steps: pulling the shutoff stroke of a ladle mechanism to the old stroke by a special device for extending the stroke of the oil cylinder, taking off the special device, re-hanging the oil cylinder with the old stroke, and operating normally; and changing the oil cylinder for ladle free-opening of the continuous casting machine into oil cylinders with the design stroke when the temporarily position limiting control modules of all ladle mechanisms are cut off, thus achieving the sliding stroke conversion of all ladle sliding nozzles.

Description

technical field [0001] The invention relates to a sliding stroke conversion method of a ladle hydraulic sliding nozzle, which belongs to the technical field of continuous casting ladle hydraulic sliding nozzle devices in iron and steel metallurgy. Background technique [0002] In recent years, with the high-efficiency transformation of steelmaking and continuous casting equipment and the popularization of new metallurgical technologies, in order to meet the needs of fast-paced production and continuous cost reduction, it is necessary to realize the continuous use of multiple furnaces of slide plates and speed up the turnover of ladles. At the same time, with the development and production of new low-silicon and low-carbon steel types, more and more stringent requirements are put forward for the ladle sliding nozzle, and ensuring the effective flow control of the ladle sliding nozzle has become a new research topic. At present, the technical transformation of multiple furnace...

AI Technical Summary

Problems solved by technology

However, with the high-efficiency transformation of the continuous casting machine and the increase of the casting speed, the inner diameter of the sliding nozzle must be increased. If the sliding stroke of the sliding plate is not increased at the same time, the safety factor of the effective flow control of the sliding nozzle will inevitably be reduced, resulting in Flow control failure, causing production accidents

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