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Low-stress sheet metal blank crystallizer

A thin slab and low-stress technology, applied in the field of casting, can solve problems such as poor cold and hot areas, tearing of billet shells, uneven heating of billet shells, etc.

Inactive Publication Date: 2005-11-02
西峡龙城冶材集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large difference in thickness between the wide surface and the narrow surface, different cold and hot area differences are caused; and there is an inflection point between the straight line and the arc, which will cause uneven heating of the billet shell, and at the same time, the deformation of the corner is too large to cause tension. The stress of the billet causes the billet shell to tear, resulting in cracks and making the metal sheet easily interrupted longitudinally
In this way, not only the service life of the crystallizer is greatly reduced, but also the production and product quality are seriously affected.

Method used

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  • Low-stress sheet metal blank crystallizer
  • Low-stress sheet metal blank crystallizer

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Embodiment Construction

[0010] See Figure 1, Figure 2, image 3 , the low-stress thin metal slab crystallizer of the present invention is composed of two water-cooled wide-faced copper plates 1 facing each other and narrow-faced copper plates 2 whose two ends determine the width of the slab. The upper casting port of the wide-faced copper plate 1 is in the shape of a continuous curve. , the continuous curve in this case is a continuous curve formed by using the calculation formula of the following "second-order derivation" to obtain each point, and the formula is:

[0011] X=-475~475

[0012] Y=0~900

[0013] Z=(K 5 Y 5 -K 6 Y 4 +K 7 Y 3 )*(K 4 -K 9 )*(K 1 x 6 -K 2 x 4 +K 3 x 2 -K 8 )

[0014] where K 1 ~K 9 is a constant

[0015] The points calculated by the above equation continuously form the curve of the sprue, and thus constitute a continuous casting surface.

[0016] There is a casting transition fillet at the junction of the wide-faced copper plate 1 and the narrow-faced co...

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Abstract

The low pressure metal sheet blank crystallizer consists of two opposite wide water cooled copper plates and two narrow copper plates defining the width of the sheet blank. The wide copper plates have top sprue in continuous curve shape and form cavity with arced work surface and large smooth work chamber. The wide copper plates are provided with circulating water cooling channels in the outer surfaces and have homogeneous cooling and high heat conducting of the crystallizer for continuous operation. Using the crystallizer can eliminate concentrated stress in the steel blank knee point, avoid crack, and reach high production efficiency, high product quality and long service life of the crystallizer.

Description

Technical field: [0001] The invention belongs to the technical field of casting, and relates to a low-stress metal thin slab crystallizer used for continuous casting of metal thin slabs. Background technique: [0002] In the known technology, the straight-arc crystallizer used is transformed into the outward expansion of the longitudinal wide surface through a reasonable curved surface, so that there is a large space for the insertion of the intrusive nozzle, and it provides uniform heat conduction and reasonable deformation during casting. conditions are created. However, due to the large difference in thickness between the wide surface and the narrow surface, different cold and hot area differences are caused; and there is an inflection point between the straight line and the arc, which will cause uneven heating of the billet shell, and at the same time, the excessive deformation of the corner will cause tension. The stress of the billet causes the billet shell to tear, r...

Claims

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Application Information

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IPC IPC(8): B22D11/04
Inventor 朱新文张九成黄祥云吕艳伍朱书成闫荣浩
Owner 西峡龙城冶材集团有限公司
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