Lip for producing wide aluminium alloy cast-rolled slab

An aluminum alloy and casting nozzle technology, which is applied to the casting nozzle structure field used in the production of wide-width aluminum alloy slabs by casting and rolling method, can solve the problem that it is difficult to ensure that the heat field of the melt flow at the exit of the casting nozzle is uniform and reasonable. The problems of uniform melt flow and heat field at the outlet of the nozzle can achieve the effect of simple structure, low cost and wide application range.

Inactive Publication Date: 2014-04-02
YUNNAN ALUMINUM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to the existing hunter-type nozzle (narrow-mouth nozzle) structure design in China, when the nozzle width reaches 1800mm, the nozzle adopts one-stage diversion, two-stage diversion, and three-stage diversion (see Figure 6 ~ Figure 8 ) are difficult to ensure that the thermal field of the melt flow at the outlet of the nozzle is uniform and reasonable
However, it is difficult to achieve a uniform thermal field of the melt flow at the outlet of the nozzle above 1800mm when the traditional front box is used in conjunction with the 3C nozzle (wide-mouth nozzle).

Method used

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  • Lip for producing wide aluminium alloy cast-rolled slab
  • Lip for producing wide aluminium alloy cast-rolled slab
  • Lip for producing wide aluminium alloy cast-rolled slab

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] a kind of like figure 1 , figure 2 The casting nozzle for producing wide-width aluminum alloy casting and rolling slabs shown is mainly composed of upper and lower box plates 45 and side stoppers 42 butted together, and a melt-shaped joint is formed between the upper and lower box plates 45. Cavity 43, one end of melt cavity 43 is inlet 41, and the other end is provided with outlet 46, is provided with a plurality of support blocks in melt cavity 43, and each support block is fixedly connected between upper and lower box plate 45 Between, the width a of the inlet 41 of the nozzle is slightly smaller than the width b of the outlet 46 of the nozzle (20mm smaller), and the width a of the inlet 41 of the nozzle is 1860mm, and the width b of the outlet 46 of the nozzle is 1880mm , and the width of the nozzle itself is 1900mm.

[0032] In the nozzle 4 of the present embodiment, each supporting block is an elliptical columnar supporting block (see figure 2), and the long...

Embodiment 2

[0035] A casting nozzle for producing wide-width aluminum alloy casting and rolling slabs according to the present invention is basically the same in structure as that of the casting nozzle in Example 1, but the width of the inlet of the casting nozzle in this embodiment is 2000mm, and the casting nozzle The width of the outlet is 2020mm, and the width of the nozzle itself is 2040mm.

[0036] In addition, in this embodiment, there are 8 elliptical support blocks in the front row, 9 elliptical support blocks in the front row, and the distance between two adjacent support blocks in each row is equal.

[0037] The surface quality of the aluminum alloy cast-rolled slabs produced by the casting nozzles of the above-mentioned embodiments of the present invention is good, the convexity of the plates is controlled within 0.2% to 0.8% of the plate thickness, the edge difference is ±0.03mm, and the edges and centers of the plates are The microstructure of the parts tends to be consisten...

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Abstract

The invention discloses a lip for producing a wide aluminium alloy cast-rolled slab, which is mainly formed by abutting and assembling upper and lower box plates (45) and a side check block (42). A melt cavity (43) is formed between the upper and lower box plates (45); one end of the melt cavity (43) is provided with a flow inlet (41) and the other end of the melt cavity (43) is provided with a flow outlet (46); a plurality of supporting blocks are arranged in the melt cavity (43) at intervals; each supporting block is fixedly connected between the upper and lower box plates (45); the width a of the flow inlet (41) of the lip is slightly less than the width b of the flow outlet (46) of the lip; and the width b of the flow outlet (46) is over 1,800mm. The lip disclosed by the invention has a simple structure and long service life and can ensure stability of melt flow and thermal field uniformity of the melt flow in the production process of the wide aluminium alloy cast-rolled slab.

Description

technical field [0001] The invention relates to a nozzle structure used in the production of metal slabs by casting and rolling, in particular to a nozzle structure used in the production of wide aluminum alloy slabs by casting and rolling. Background technique [0002] In the production of aluminum alloy casting and rolling, the casting nozzle is the key part of conveying molten aluminum. The structure of the casting nozzle will directly affect whether the melt can enter the casting and rolling area from the casting nozzle cavity uniformly and stably, which in turn affects the quality of the plate. Therefore, the casting nozzle The rationality of structure setting plays a key role in the whole aluminum alloy casting and rolling production. [0003] In recent years, the casting and rolling production of aluminum alloy plates has gradually developed towards the production of wide-width cast-rolled slabs. The width of foreign cast-rolled slabs has grown from 1000mm to 1500mm t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/06
Inventor 丁吉林熊崇礼邓运来李永平付利智胥福顺戴青松王义仁陈劲戈张劲肖明富姜科达王洋
Owner YUNNAN ALUMINUM
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