High-temperature steel billet slit on-line rapid detection measuring tool and detection method thereof

Abstract

The invention discloses an on-line rapid detection measuring tool for a high-temperature steel billet slit and a detection method thereof, a slit filler gauge of the detection measuring tool is of a strip plate-shaped structure, the thickness of the slit filler gauge corresponds to a width limit value of the slit in a high-temperature state, the slit filler gauge is vertically connected with a handle, and the length of the slit filler gauge is not less than the depth of the slit; thickness values are marked on the handle and / or the slotted filler gauge. The detection method comprises the following steps: after high-temperature steel billet slotting is completed, a slotting filler gauge is plugged into a slot, and if the minimum slotting filler gauge cannot be plugged into the slot, it is judged that the slot is too small; if the minimum slotting filler gauge can be plugged and the maximum slotting filler gauge cannot be plugged, determining that the slotting is qualified; and if the maximum slotting filler gauge can be plugged in, determining that the slotting is too large. The slotting filler gauges with different thicknesses are stuffed into the slotting under the high-temperature state to detect whether the slotting exceeds the limit or not, so that the cutting nozzle is conveniently adjusted or replaced in time, the purposes of timely controlling the slotting and improving the steel-making metal yield are achieved, and the device has the advantages of being simple in structure, easy and convenient to operate, timely and reliable.

Description

technical field [0001] The invention belongs to the technical field of steelmaking, and in particular relates to a measuring tool for on-line rapid detection of cutting seams of high-temperature steel billets with simple structure, simple and convenient operation, timely and reliable detection, and a detection method thereof. Background technique [0002] The continuous caster is responsible for converting high-temperature liquid molten steel into billets of target length (fixed length) in the production process of the iron and steel complex. There are two main ways to cut the high-temperature steel billet from the tension leveler into fixed lengths: one is hydraulic shearing; the other is flame cutting. The domestic continuous casting machine generally adopts the flame cutting method. The principle of flame cutting the billet is mainly to cut the billet by the gas injected from the high temperature cutting nozzle to melt the billet laterally along the billet. Therefore, th...

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Problems solved by technology

The principle of flame cutting steel billets is mainly through the gas jetted from the high temperature resistant cutting nozzle to melt the steel billet laterally to achieve cutting. Therefore, the use of flame cutting method will inevitably cause metal loss

At present, when the continuous casting machine adopts the flame cutting method to cut the fixed-length billet, as the pouring time prolongs, the flame cutting nozzle will gradually burn out, which will cause the kerf to gradually become larger and increase the metal loss. In the actual production process, the on-line monitoring of the kerf mainly relies on visual inspection, or the two methods of keeping the kerf close to normal temperature and then measuring. If the seam exceeds the limit and then take measures, the loss will be greater

In order to solve the above-mentioned billet cutting problem of the continuous casting machine, in the prior art, on the one hand, the cutting equipment is updated by developing the narrow slit cutting technology; Real-time detection, but the replacement cost of the cutting equipment corresponding to the narrow slit cutting technology is relatively high, while the structure and operation of the intelligent detection equipment are relatively complicated, and the cost is also high, and the reliability of the intelligent detection equipment in the harsh working environment of the continuous casting machine still needs to be improved

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