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Crystallizer for continuous casting

一种结晶器、铸坯的技术，应用在结晶器领域，能够解决热处理欠缺均匀性等问题，达到增大接触表面、提高最终质量的效果

Active Publication Date: 2014-12-31
DANIELI & C OFF MEC SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These solutions only partly alleviate the problem, since anyway they lead to a lack of uniformity in the heat treatment of the entire periphery of the billet

Method used

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  • Crystallizer for continuous casting
  • Crystallizer for continuous casting
  • Crystallizer for continuous casting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] A mold 10 for continuous casting of long products is shown schematically at figure 1 , wherein reference numeral 11 basically indicates the nominal line of the meniscus of the liquid metal.

[0038] In this type of mold 10 for long products such as blooms or billets 12, the isotherms (with the same temperature) on the inner surfaces of the mold 10 have an elliptical or parabolic development, Such as figure 1Line 13 and Line 14 are shown. Therein, the crystallizer 10 has a polygonal shape, preferably a quadrangular shape, even more preferably a rectangular or square shape, and has thin walls and is cooled by an external jacket.

[0039] In particular, the region indicated by the reference number 15 is the region with the maximum temperature, since it corresponds to the region of the meniscus; The adjacent area indicated by marker 16 has a lower temperature.

[0040] exist figure 2 , the development of heat flow along one surface of the crystallizer 10 just below th...

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PUM

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Abstract

Crystallizer for the continuous casting of long metal products such as blooms or billets (12), of the type cooled by an external cooling jacket, in which, at least in the zone of maximum thermal peak, positioned around the zone of the meniscus (11) or immediately below it, there are means present, made on the walls of the crystallizer (10), to condition the heat exchange between the walls of the crystallizer and the cast steel. The means to condition the heat exchange comprise concavities or depressions (20) made on the internal wall of the crystallizer (10), made around the zone of maximum thermal peak, and having a distribution that, in terms of the overall area occupied by them per surface unit, is reduced until it is canceled toward the bottom at a certain distance from said zone of maximum thermal peak.

Description

technical field [0001] The present invention relates to a mold for continuous casting of long metal products such as blooms or billets, which is cooled by means of external cooling jackets. [0002] The mold is preferably suitable for blooms or billets having a square section with sides equal to 120mm÷180mm, or a rectangle with an equivalent section. Background technique [0003] In the field of continuous casting, especially in the case of casting blooms and strands, it is well known that one of the main problems concerning the quality of the finished product is the defect of rhomboid deformation. This shape defect is characterized by the fact that the product (eg bloom or billet), especially for small sizes under high-speed casting, does not have exactly equal mold Instead, it assumes the shape of a rhomboid that could cause problems during the subsequent rolling process. [0004] If the rhomboid deformation, measured as the difference between the diagonals of the sectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/041B22D11/055B22D11/07
CPCB22D11/1243B22D11/041B22D11/055B22D11/07
Inventor 马尔科·里纳尔迪马尔科·毛罗·莫塔
Owner DANIELI & C OFF MEC SPA
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