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Multi-strand casting machine capable of producing super large broken section beam blank or plate blank and producing method

A technology of multi-strand continuous casting and super large cross-section, applied in the field of continuous casting equipment in the iron and steel metallurgy industry, can solve the problems of low productivity of the special-shaped billet casting machine, easy cracking of the casting billet, singleness, etc., and achieve the effect of improving the productivity of the casting machine.

Active Publication Date: 2018-01-09
CONTINUOUS CASTING TECH ENG OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In summary, it can be seen that the existing single-function special-shaped slab or slab casting machine production method has the following disadvantages: (1) the section of the special-shaped slab that can be produced is small, and cannot meet the production needs of large H-beams; (2) the conventional slab When the casting machine produces thick plates and crack-sensitive steel types, the casting slab is prone to crack defects; (3) conventional special-shaped slab and slab casting machines can only produce a single type of slab, and the productivity of the special-shaped slab casting machine is low

Method used

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  • Multi-strand casting machine capable of producing super large broken section beam blank or plate blank and producing method
  • Multi-strand casting machine capable of producing super large broken section beam blank or plate blank and producing method

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Embodiment 1

[0033] Embodiment 1: Production of special-shaped blanks with super large cross-sections, or production of slabs with a thickness of ≤200mm

[0034] The maximum section of profiled billet is 1500x500x120mm, the unit weight reaches 2.2t / m, and the minimum section is 350x290x100mm. The slab can be produced with a section of (150~200) x (800~1500) mm. The slab includes: ordinary steel, high-alloy steel with strong crack sensitivity (such as 18MnCr5, 42CrMo4), and pipeline steel X60-X80 (including Nb, V, Ti).

[0035] When producing shaped billets, the ladle 101 is rotated to the pouring position through the rotary table 102, and the molten steel in the ladle 101 is distributed to the shaped billet crystallizers 104 of each flow through the middle ladle 103 (the cooling water of the crystallizers is determined by numerical simulation calculations). The size and position of the hole ensure the reasonable heat transfer of the complex-shaped slab, obtain a uniform slab shell thickne...

Embodiment 2

[0038] Embodiment 2: Production of super-large cross-section special-shaped blanks and slabs with a thickness of 200-300mm

[0039] The maximum section of profiled billet is 1500x500x120mm, the unit weight reaches 2.2t / m, and the minimum section is 350x290x100mm. The slab can be produced with a cross-section of (200~300)x(800~1500)mm. If the length of the horizontal section of the tension-leveling unit is increased, the maximum thickness of the slab can reach 350mm. It can also produce high-alloy steel with strong crack sensitivity such as 18MnCr5, 42CrMo4, pipeline steel X60~X80 (including Nb, V, Ti).

[0040] When the thickness of the produced slab exceeds 200mm, since the end point of solidification of the cast slab will move backward, the structure of the billet drawing and car pulling unit at this time should be replaced by a close-packed multi-roller clamping structure similar to the structure of the sector group 108 Tension straightening unit 112. The process of produ...

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Abstract

The invention discloses a multi-strand casting machine capable of producing a super large broken section beam blank or a plate blank and a producing method. The multi-strand casting machine has the performance of producing the beam blank with the piece weight being 2.2 t / m, or the plate blank with the thickness being up to 300 mm or a crack sensitive steel plate blank simultaneously, and producingrequirements of H-shaped steel and a sheet strip are met; the multi-strand casting machine sequentially comprises a ladle, a revolving platform, a tundish, a crystallizer, a hydraulic arc-like vibration, a second cold section 1 and a second cold section 2 with dense row clamps, a fanshaped section group, a continuous straightening machine group, an imitation-type fire cutting machine and a rollerbed group; the section from the crystallizer of multi-strand casting to the front section of a straightening area is set as a full-arc shape, and the radius of the full-arc shape is greater than or equal to12 m; and multiple-strand casting has at least strand channels, the roller diameter of a driving roller in the straightening machine group is greater than or equal to 450 mm, and reduction force is greater than or equal to 700 t, different process production methods can be adjusted conveniently aiming at production of casting blank products with different specifications, and diversity of the products and productivity of the casting machine are improved.

Description

technical field [0001] The invention relates to a multi-strand continuous casting machine and a production method capable of producing super-large-section special-shaped blanks or slabs, and belongs to the technical field of continuous casting equipment in the iron and steel metallurgy industry. Background technique [0002] The continuous casting machine is a large and important equipment in the iron and steel metallurgical industry. The existing continuous casting for special-shaped billet products often uses a special-purpose special-shaped billet caster with a single function for production. Due to the complex shape of the special-shaped billet and the uneven heat transfer, the stress concentration of the billet is concentrated, and various cracks are prone to appear in the continuous casting process. The maximum cross-section of the conventional special-shaped billet casting machine can only be about 1.4t / m in China, which cannot meet the requirements of large-scale cast...

Claims

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Application Information

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IPC IPC(8): B22D11/14
Inventor 谢长川宁曙光熊杰陈阳谢化斌邹旭韩占光刘伟涛钱亮高仲
Owner CONTINUOUS CASTING TECH ENG OF CHINA
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