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Method and device for acquiring reference parabolic continuous taper on crystallizer

A crystallizer and parabolic technology, which is applied in the field of steelmaking and continuous casting, can solve problems affecting the quality of the billet, poor contact between the billet shell and the wall of the mold, etc., and achieve increased casting speed, improved billet quality, and high heat transfer efficiency effect

Active Publication Date: 2016-04-20
WISDRI ENG & RES INC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the purpose of the present invention is to provide a method and device for obtaining the continuous taper of the reference parabola on the mold, aiming at solving the problems in the existing technical solutions that the slab shell and the mold wall surface of the cast slab in the mold are Poor contact and technical problems that affect the quality of the slab

Method used

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  • Method and device for acquiring reference parabolic continuous taper on crystallizer
  • Method and device for acquiring reference parabolic continuous taper on crystallizer
  • Method and device for acquiring reference parabolic continuous taper on crystallizer

Examples

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example 1

[0053] For casting high carbon steel, the billet size is 200mm×200mm billet, the mold length is 900mm, the mold upper opening size is 203.27mm, and the mold upper opening position is 37.5mm.

[0054] It can be seen from the above analysis that L=900mm, a=203.27mm, x 1 =37.5mm,x 2 =937.5mm; take k=0.0385mm accordingly 1 / 2 .

[0055] 1.1 Calculate the taper T of the position of the upper mouth of the crystallizer 1 :

[0056] T 1 = k a x 1 × 10 5 = 3.09 % / m ;

[0057] 1.2 Calculate the total taper T in the direction of the crystallizer length:

[0058] T = 2 k ( x ...

example 2

[0065] Casting alloy steel, the billet specification is 600mm×600mm billet, the mold length is 900mm, the mold upper opening size is 610.73mm, and the mold upper opening position is 37.5mm.

[0066] It can be seen from the above analysis that L=900mm, a=610.73mm, x 1 =37.5mm,x 2 =937.5mm; Correspondingly take k=0.1346mm 1 / 2 .

[0067] 2.1 Calculation of the taper T of the upper mouth of the crystallizer 1 :

[0068] T 1 = k a x 1 × 10 5 = 3.6 % / m ;

[0069] 2.2 Calculate the total taper T in the crystallizer length direction:

[0070] T = 2 k ( x 2 ...

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Abstract

The invention belongs to the field of steel making continuous casting and provides a method and device for obtaining the continuous taper of an upper datum parabola of a crystallizer. The method comprises the steps that the taper at the position of an upper opening of the crystallizer is worked out; the total taper in the length direction of the crystallizer is worked out; according to the taper at the position of the upper opening of the crystallizer and the total taper, the taper at any position away from the upper opening in the length direction is worked out. According to the crystallizer manufactured by the adoption of the method and device for obtaining the continuous taper of the upper datum parabola of the crystallizer, an inner casting blank and the wall surface of the crystallizer are in good contact with each other at any position, high heat transfer efficiency between the casting blank and the crystallizer is achieved, in this way, the quality of a casting blank is improved, the casting speed is increased, and an important guarantee is provided for efficient continuous casting.

Description

technical field [0001] The invention belongs to the field of steelmaking and continuous casting, and in particular relates to a method and a device for obtaining the continuous taper of a reference parabola on a crystallizer. Background technique [0002] The mold is the heart of the continuous casting machine, and the formulation of the mold taper is the core of the mold design process. The rationality of the formulation directly determines the casting speed range that the continuous casting machine can achieve and the quality of the cast slab. If the taper of the mold is set too small, it will easily create an air gap between the billet shell and the mold wall, which will affect the heat transfer between the billet and the mold, resulting in uneven growth of the billet shell in the mold. The inhomogeneity of the billet shell growth process will in turn intensify the air gap between the billet shell and the wall of the mold, which will cause quality problems such as surface...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/057
Inventor 陈洪智徐永斌
Owner WISDRI ENG & RES INC LTD