Low temperature continuous casting heat patching method and its automatic heat patching device

Abstract

The present invention discloses a concurrent heating method for low-temperature continuous casting; a molten steel heating area is equipped between a pouring box (2) and a crystallizer (4) of the continuous casting device; an automatic heating device is equipped in the heating area and the automatic heating device adopts a non-contact temperature sensor (33) to measure the molten steel temperature after concurrent heating and the heating method of coreless intermediate frequency induction to implement concurrent heating on the molten steel flowing into a heater (3) of the heating device from the pouring box (2); the molten steel heated to the preset temperature flows into the internal cavity of the crystallizer (4) through an inert gases protective cover (17). The present invention also discloses an automatic low-temperature continuous casting heating device comprising the heater (3) and an intelligent temperature control system; the heater (3) is equipped between a pouring box (2) and a crystallizer (4) of the continuous casting device and the intelligent temperature control system comprises an intelligent temperature controller (34), a non-contact temperature sensor (33) and an intermediate frequency power (35).

Description

technical field [0001] The invention relates to a low-temperature continuous casting heat supplement method and an automatic heat supplement device, which are suitable for supplementary heat supply of billet and slab low-temperature continuous casting molten steel. Background technique [0002] In the traditional continuous casting process, there is generally no molten steel heating device. Due to the small diameter of the nozzle of the tundish of the continuous casting machine, the long pouring time, and the large heat loss of the tundish, in order to facilitate the floating of impurities in the molten steel, it is necessary to avoid The tundish nozzle freezes, interrupting the continuous casting production, and the usual method is to increase the superheat of molten steel. But thus bring the following negative effects: (1) increased energy consumption, increased production costs; (2) accelerated the oxidation rate of metals, increased the loss of metals; The corrosion spe...

AI Technical Summary

Problems solved by technology

These two heating methods play a certain role in supplementing heat in the later stage of pouring, but the overall cost of supplementing heat is high, and the product quality does not improve significantly after supplementing heat. When the plasma heating system is working, the noise is particularly loud and the consumption of argon is large.

Therefore, it is difficult to expand the application of these two methods of supplementing heat at present.

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