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Special-shaped blank continuous casting machine tundish and conversion method of different casting blank section thereof

A special-shaped billet continuous casting and tundish technology, which is applied to the tundish process field of special-shaped billet continuous casting in iron and steel metallurgy, can solve the problems of increasing the tundish cladding and the inability to convert the tundish, achieves fast construction, and solves the problem of sizing nozzles. The effect of steel penetration accident and reduction of production preparation costs

Inactive Publication Date: 2009-08-12
SHANDONG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Maanshan Iron and Steel's first 3-machine 3-strand continuous casting machine for special-shaped slabs was put into operation in September 1998. Two slab sections are designed, and each slab section uses a special tundish. , slabs and other types of continuous casting tundishes are similar, the main problem is that tundishes with different slab cross-sections cannot be converted and used, resulting in the double increase of tundish shells for production

Method used

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  • Special-shaped blank continuous casting machine tundish and conversion method of different casting blank section thereof
  • Special-shaped blank continuous casting machine tundish and conversion method of different casting blank section thereof
  • Special-shaped blank continuous casting machine tundish and conversion method of different casting blank section thereof

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Effect test

Embodiment

[0038] A continuous casting tundish for special-shaped slabs for different slab sections, comprising a tundish shell 1, a connecting plate 3, a magnesium prefabricated block, a tundish permanent lining 6, a sizing nozzle 8, a sizing nozzle seat brick 9, The working lining 10 of the tundish, the sizing nozzle 8 is installed and positioned through the sizing nozzle positioning hole 12 on the connecting plate 3, and the connecting plate 3 is fixedly connected to the cladding 1 with 8 M24 hexagonal bolts 2; the upper part of the sizing nozzle 8 is set Calibrated nozzle seat brick 9, two prefabricated blocks are installed in the space between the calibrated nozzle seat brick 9 and the permanent lining 6, the gap between the calibrated nozzle seat brick 9 and the tundish permanent lining 6 and the small magnesia prefabricated block and The gaps between the permanent linings 6 of the tundish are filled and compacted with magnesium ramming material 7 .

[0039] Through three combinati...

Embodiment 2

[0055] Other is with embodiment 1, and difference is:

[0056] The connecting plate has a "convex" longitudinal section structure, a rectangular cross section, a length a of 360 mm, a width b of 250 mm, a total thickness c of 40 mm, and a "convex" platform thickness h of 25 mm. There is a positioning hole for the sizing nozzle on the top, the longitudinal section structure of the positioning hole is trapezoidal, the cross section shape is circular, the upper hole diameter R is 102mm, the lower hole diameter r is 92mm, and 8 M24 hexagonal bolt holes are designed around the lower part of the "convex" platform .

[0057] Each sizing nozzle adopts a connecting plate, and the distance between the two connecting plates is 150-180mm. The permanent lining is poured between the connecting plates, and each connecting plate is connected and fixed with the cladding by bolts.

[0058] The small magnesia prefabricated block 4 and the large magnesia prefabricated block 5 are composed of the...

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Abstract

The invention provides a transformation method of different casting blank sections of a tundish of a profiled blank conticaster, belonging to the technical field of the profiled blank continuous casting tundish process in ferrous metallurgy. In the transformation method, the same tundish reaches the mutual transformation of the tundish applied to three different casting blank sections by the replacements of a connecting board (3), a sizing nozzle (8) and magnesia pre-casting bricks. The transformation method is characterized in that a positioning hole (12) for installing the sizing nozzle is changed to be on the replaceable connecting board (3) from a cladding (1); two pre-casting bricks are installed between a well block (9) of the sizing nozzle and a permanent lining (6), and the three installation spaces in different lengths of the smallest casting blank section, the middle casting blank section and the biggest casting blank section are satisfied by three combination methods of the magnesia pre-casting bricks. The transformation method of the different tundish casting billet sections of the beam blank caster is applied to the tundish of the profiled blank conticaster and solves the mutual transformation problem of the tundish that the same tundish is applied to three different casting blank sections.

Description

[0001] technology field [0002] The invention relates to a method for converting different slab sections of a tundish of a profiled billet continuous casting machine, and belongs to the technical field of profiled billet continuous casting tundish technology in iron and steel metallurgy. Background technique [0003] Due to the particularity of the cross-section, the special-shaped billet continuous casting machine is a new continuous casting process integrating round billet, square billet and slab. The tundish has different process characteristics from other traditional continuous casting machine tundishes. Each cast The flow is poured with two sizing nozzles, and the distances between the two sizing nozzles of each strand of different slab sections are different, and the pouring inner diameter is different. Laiwu Steel's large H-beam special-shaped billet continuous casting machine is the largest and thinnest special-shaped billet continuous casting machine in China jointly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D41/08B22D11/04
Inventor 吕铭武光君李洪建王学新
Owner SHANDONG IRON & STEEL CO LTD
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