Movable hot rolling thermal insulation heat treatment device

Abstract

The invention discloses a movable hot rolling thermal insulation heat treatment device. The movable hot rolling thermal insulation heat treatment device comprises a base plate, a steel coil fixed basearranged in the center on the base plate, a tray being an annular structure and horizontally sleeving the middle part of the steel coil fixed base, a thermal insulation cover opened at the lower endand covering the tray and with a larger inner cavity volume than a steel coil, an electric heating device arranged on the inner side wall of the thermal insulation cover, a temperature sensor arrangedin the thermal insulation cover, and an information acquiring control module electrically connected with the electric heating device and the temperature sensor. The movable hot rolling thermal insulation heat treatment device can use self heat of the steel coil for uniform-heating and slow-cooling heat treatment process on the steel coil to achieve the purposes of high efficiency, energy conservation and improvement of the yield.

Description

technical field [0001] The invention relates to hot rolling equipment, in particular to a mobile hot coil heat preservation and heat treatment device. Background technique [0002] The production of cold-rolled ultra-high-strength steel mainly has the problem of large fluctuations in strip length and width, which lead to severe fluctuations in rolling force during cold-rolling production, and the thickness of cold-rolled finished products exceeds the tolerance standard. Rolling stability seriously affects the yield of cold-rolled ultra-high-strength steel. [0003] The traditional hot rolling production line only completes the transportation of steel coils during the transportation of steel coils after coiling. If the steel coils need heat preservation and slow cooling, annealing and other treatment processes, special heat preservation pits, heat preservation furnaces, and bell furnaces need to be set up. , heat treatment and other production lines. It has the characterist...

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Problems solved by technology

[0005] (1) The most prominent problem existing in the heat preservation device of the rolling line is that the interval time for the strip steel to enter the heat preservation device after coiling is too long, the metallographic structure transformation of the strip steel has mostly occurred or completed, and the off-line slow cooling method can improve the performance of the hot coil The effect cannot meet the quality requirements of high-strength steel

It takes 20 to 30 minutes to hoist the hot coil into the insulation cover, and the air cooling time of the steel coil is too long, which affects the insulation effect and material properties

[0006] (2) The cost of adding special heat preservation pits, heat preservation furnaces, bell furnaces, heat treatment and other production lines for such heat preservation devices is generally high, and the long construction period of the transformation process affects normal production

And there is the problem of poor heat preservation effect (fast temperature drop rate)

[0007] (3) This type of heat preservation cover is basically an offline mode (the heat preservation device is placed statically on the coiling platform), and the transportation and lifting of steel coils disrupt the normal production rhythm of the production line

Affects the production capacity of the steel rolling production line, and the actual mass production is difficult

[0008] (4) At the present stage, some companies have developed insulation covers that only have thermal insulation effects in form. Since the bottom structure cannot be completely sealed, the insulation effect of steel coils is not good.

[0010] Chinese patent CN201710853613.3 discloses an "on-line heat preservation and slow cooling device", which includes: only heat preservation effect exists, and the steel coil heat preservation effect is not good because the bottom structure cannot be completely sealed

[0012] Japanese patent JP2010094710 (A) discloses the "tunnel-type insulation cover", which includes: the cost of adding a special insulation pit and other production lines is generally high, and the long construction period of the transformation process affects normal production

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