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Rolling method and device for headless continuous casted and rolled ultra-low carbon steel roll ferrite used for ultra-deep drawing

An ultra-low carbon steel, continuous casting and rolling technology, applied in metal rolling, metal rolling, manufacturing tools, etc., can solve the problems of stable performance control, complicated process, low production efficiency, etc., and eliminate adverse effects , reduce costs and improve efficiency

Pending Publication Date: 2018-01-19
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve the existing problems of complex process flow, low production efficiency, high energy consumption, high cost, low yield and difficult control of performance stability existing in the existing production method and device for ultra-low carbon steel coils for ultra-deep drawing. Provided are a ferrite rolling method and device for producing ultra-low carbon steel coils for ultra-deep drawing by endless continuous casting and rolling

Method used

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  • Rolling method and device for headless continuous casted and rolled ultra-low carbon steel roll ferrite used for ultra-deep drawing
  • Rolling method and device for headless continuous casted and rolled ultra-low carbon steel roll ferrite used for ultra-deep drawing
  • Rolling method and device for headless continuous casted and rolled ultra-low carbon steel roll ferrite used for ultra-deep drawing

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] According to the chemical composition and mass percentage of ultra-low carbon steel: C: 0.007%, Si: 0.05%, Mn: 0.25%, Nb: 0.003%, Ti: 0.070%, Als: 0.045%, P: 0.015%, S : 0.010%, N: 0.005%, O: 0.0035%, and the rest is Fe and unavoidable impurities for smelting. The slab is cast in a continuous casting machine, the temperature of the continuous casting ladle is 1560°C, the casting speed is 4m / min, and the thickness of the slab is 130mm. It is directly sent to the rough rolling unit for rough rolling. The rough rolling temperature is 1100°C-1050°C. After rough rolling, the thickness of the intermediate billet is 25mm. The intermediate billet enters the cooling channel to control the temperature, the cooling speed is 38°C / s, the rolling shear head is descaled by high-pressure water, the descaling water pressure is 30MPa, the finishing rolling unit is finishing rolling, the purge water between the stands is put into use, and the finishing rolling temperature Controlled at 8...

Embodiment 2

[0044]According to the chemical composition and mass percentage of ultra-low carbon steel: C: 0.005%, Si: 0.03%, Mn: 0.18%, Nb: 0.020%, Ti: 0.050%, Als: 0.060%, P: 0.010%, S : 0.008%, N: 0.004%, O: 0.0030%, and the rest is Fe and unavoidable impurities for smelting. The slab is cast in a continuous casting machine, the temperature of the continuous casting ladle is 1563°C, the casting speed is 5m / min, and the thickness of the slab is 110mm. It is directly sent to the rough rolling unit for rough rolling. The rough rolling temperature is 1110°C-1060°C. After rough rolling, the thickness of the intermediate billet is 18mm. The intermediate billet enters the cooling channel to control the temperature, the cooling speed is 27℃ / s, the rolling shear head is descaled by high-pressure water, the descaling water pressure is 28MPa, the finishing rolling unit is finishing rolling, the purge water between the stands is put into use, and the finishing rolling temperature Controlled at 830...

Embodiment 3

[0046] According to the chemical composition and mass percentage of ultra-low carbon steel: C: 0.003%, Si: 0.02%, Mn: 0.12%, Nb: 0.035%, Ti: 0.030%, Als: 0.025%, P: 0.012%, S : 0.005%, N: 0.0035%, O: 0.0020%, and the rest is Fe and unavoidable impurities for smelting. The slab is cast in a continuous casting machine, the temperature of the continuous casting ladle is 1570°C, the casting speed is 6m / min, and the thickness of the slab is 90mm. It is directly sent to the rough rolling unit for rough rolling. The rough rolling temperature is 1130°C-1070°C. After rough rolling, the thickness of the intermediate billet is 11mm. The intermediate billet enters the cooling channel to control the temperature, the cooling speed is 15°C / s, the rolling shear head is descaled by high-pressure water, the descaling water pressure is 30MPa, the finishing rolling unit is finishing rolling, the purge water between the stands is put into use, and the finishing rolling temperature Controlled at 8...

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Abstract

The invention provides a rolling method and device for headless continuous casted and rolled ultra-low carbon steel roll ferrite used for ultra-deep drawing, and belongs to the field of metallurgicalrolling. The process of the rolling method is continuous casting for billet forming, high pressure water descaling, coarse rolling through a coarse rolling machine set, rapid cooling (controlling phase change), high pressure water descaling, ferrite rolling through a fine rolling machine set (blowing and sweeping water between racks), cooling through a layer cooling device, high speed flying shearfor roll slitting and coiling through a coiling machine. By means of the rolling method, the difficult problems that the heating temperature of a heating furnace before coarse rolling in a conventional hot rolling process is high, the time of temperature waiting for cooling time between coarse rolling in an Austenite area and fine rolling in a ferrite area is long, and the fine rolling temperature, the steel coil surface quality, forming performance and the like of continuous casting and rolling process of a thin plate which is represented by CSP are difficult to stably control are solved, the rolling method has the advantages of being compact in layout, few in investment, high in production efficiency, safe, reliable, energy-saving, environmental-protection, low in cost and the like, andthe ultra-low carbon steel coil for ultra-deep drawing is produced through headless continuous casting and rolling and ferrite rolling.

Description

technical field [0001] The invention belongs to the technical field of metallurgical steel rolling, and in particular provides a ferrite rolling method and device for producing ultra-low carbon steel coils for ultra-deep drawing by endless continuous casting and rolling. Background technique [0002] Thin slab continuous casting and rolling technology is a new technology that appeared in the late 1980s. Mainly include the CSP process of German SMS company, which adopts roller hearth furnace for heating, soaking and heat preservation, and the CPR process cooperated with German Thyssen factory can realize semi-endless rolling; the ISP process of German MDS company, the intermediate billet is heated by induction and hot coil box-type soaking, which can realize semi-endless rolling; the FTSR process of Italian Danieli company has liquid core reduction technology, which is heated and kept in a roller hearth tunnel furnace and then rough rolled. There are thermal insulation rolle...

Claims

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Application Information

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IPC IPC(8): B21B1/46B21B15/00B21B45/02B21B45/08B21B37/74C22C38/02C22C38/04C22C38/12C22C38/14C22C38/06
CPCY02P70/10
Inventor 康永林田鹏朱国明秦哲郭呈宇
Owner UNIV OF SCI & TECH BEIJING
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