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Manufacture device and method for large-size fine-grain homogeneous aluminum alloy cast ingot

A technology of aluminum alloy ingot casting and preparation equipment, which is applied in the field of metal material processing, can solve problems such as composition segregation, easy cracking, coarse and uneven structure, etc., and achieve the effect of shallower liquid cavity depth, smooth surface, and reduced composition segregation

Active Publication Date: 2017-07-07
有研金属复材技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to fundamentally solve the defect problems such as coarse and uneven structure, composition segregation, and easy cracking of large-scale ingots, the present invention proposes a preparation method and device for large-scale fine-grained homogeneous aluminum alloy ingots

Method used

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  • Manufacture device and method for large-size fine-grain homogeneous aluminum alloy cast ingot
  • Manufacture device and method for large-size fine-grain homogeneous aluminum alloy cast ingot
  • Manufacture device and method for large-size fine-grain homogeneous aluminum alloy cast ingot

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Experimental program
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Effect test

Embodiment 1

[0054] An aluminum processing enterprise prepares Φ582mm 7055 aluminum alloy ingots. It has strict requirements on the uniformity of the internal structure of the ingot. The average grain size of the cross-section should be less than 180 μm, and the grain size deviation should be controlled within 8%. The segregation rate of alloy elements Control within 6%.

[0055] Adopt the present invention to produce the 7055 aluminum alloy round ingot that diameter is 582mm, the schematic diagram of device structure is as follows figure 1 shown. The cooler 1 is arranged on the casting platform, the outer diameter of the cooler 1 is 300mm, the cooler 1, the hot top 2 and the crystallizer 4 are concentric, and the bottom of the cooler 1 is flush with the bottom of the crystallizer 4. The electromagnetic stirrer 5 is arranged on the outer periphery of the crystallizer 4, and the electromagnetic stirring method adopts rotating electromagnetic stirring.

[0056] The inner tube of the cooler...

Embodiment 2

[0064] An aluminum processing enterprise prepares a 7050 aluminum alloy flat ingot with a specification of 520mm×1560mm. It has strict requirements on the uniformity of the internal structure of the ingot. The average grain size should be less than 156μm, and the grain size deviation should be controlled within 6%. The maximum segregation rate is controlled within 6%, and there are no wrinkles on the surface and no cracks inside.

[0065] Adopt the present invention to produce the 7050 aluminum alloy flat ingot of 520mm * 1560mm, the schematic diagram of device structure is as follows figure 1 shown. Cooler 1 has a diameter of 200mm and is installed on the casting platform. Three coolers are arranged in a row and evenly arranged, inserted into the crystallizer with a center distance of 440mm. The bottom of cooler 1 is flush with the bottom of crystallizer 4 . The electromagnetic stirrer 5 is arranged on the outer periphery of the crystallizer 4, and the electromagnetic stirri...

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Abstract

The invention relates to a manufacture device and method for a large-size fine-grain homogeneous aluminum alloy cast ingot, belonging to the field of metal material machinery. The device mainly comprises a uniform cooler, a thermal ejector, an electromagnetic stirrer, a crystallizer and a dummy ingot, wherein the thermal ejector is arranged above the crystallizer; the electromagnetic stirrer is arranged on the periphery of the thermal ejector and the crystallizer; the dummy ingot is arranged below the crystallizer; the uniform cooler is arranged in the crystallizer; and the uniform cooler consists of an inner pipe and an outer pipe. According to the manufacture device and method, through special coupling treatment of uniform cooling in the crystallizer and electromagnetic stirring outside the crystallizer is applied to an alloy melt, so that effective control on uniformity of a temperature field and a component field of the large-size alloy melt is realized, and the large-size aluminum alloy cast ingot with uniform and fine structure and uniform components is manufactured. The manufacture device is simple in structure, feasible in method, obvious in effect, high in production efficiency and easy for combination with large-scale industrial production, and has a wide industrial application prospect in the fields of aerospace, rail transportation and manufacture of ships and the like.

Description

technical field [0001] The invention belongs to the field of metal material processing, and in particular relates to a preparation device and method for a large-scale fine-grained homogeneous aluminum alloy ingot. Background technique [0002] Large-scale aluminum alloy ingots play an important role in aerospace, rail transit, ships and other large equipment fields. However, the large-scale aluminum alloy ingots prepared by the traditional semi-continuous casting method inevitably have defects such as coarse and uneven structure, serious composition segregation, and easy cracking, resulting in poor product quality and low yield, which cannot meet the high-quality requirements of high-end manufacturing industries. The demand for large-scale high-strength aluminum alloy materials. [0003] The electromagnetic field has the characteristics of non-contact, high energy density, cleanness, and precise design and control, and is playing an increasingly important role in the field ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/041B22D11/112B22D11/115
CPCB22D11/041B22D11/112B22D11/115
Inventor 张志峰徐骏高明伟罗亚君白月龙张少明
Owner 有研金属复材技术有限公司
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