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ZK6IM wrought magnesium alloy casting technology

A technology of deformed magnesium alloy and casting process, which is applied in the field of alloy cast iron casting, and can solve problems such as imperfect technology, restrictions on the wide application of magnesium alloys, and difficulty in producing deformed magnesium alloys.

Inactive Publication Date: 2015-04-29
QINGDAO HEDELONG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production of deformed magnesium alloy is very difficult and the technology is not perfect
become the main problem limiting the wide application of magnesium alloys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Zr is controlled at the upper limit, w(Zr) is 0.6-0.8%; Zn is controlled at the lower limit, (Zn) is 5.3%-5.5%.

[0018] (2) To prevent overheating of the ZK61M magnesium alloy melt, the casting speed is controlled within 36mm / min-40mm / min; the casting temperature is as low as possible. Controlled at 6950°C - 7050°C.

[0019] (3) Improve the original crystallizer, reduce the secondary water cooling intensity and reduce the tensile stress while the primary cooling intensity remains unchanged.

[0020] (4) Ingot homogenization treatment parameters: heat preservation at 3900°C for 12h.

[0021] casting speed

[0022] When the casting speed is low, the metal stays in the crystallizer for a long time, the solidification zone from the surface of the ingot to the center becomes thicker, the liquid cavity becomes shallower, and it is easy to be ingot-cast when the solidified shell does not come out or slightly out of the water-cooling zone of the mold The internal he...

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PUM

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Abstract

The invention discloses a ZK6IM wrought magnesium alloy casting technology. According to the ZK6IM wrought magnesium alloy casting technology, Zr is controlled at medium upper limit, and w(Zr) is 0.6-0.8%; Zn is controlled at lower limit, and (Zn) is 5.3%-5.5%; ZK61Mmagnesium alloy melts are prevented from being over hot, and the casting speed is controlled within 36mm / min-40mm / min; the casting temperature is low as much as possible and is controlled in a range of 6950-7050 DEG C; an original crystallizer is improved, the secondary water cooling strength is reduced under the condition that primary cooling strength is not changed, and the tensile stress is reduced; and during homogenization treatment on cast ingots, the cast ingots stay in an environment at the temperature of 3900 DEG C for 12 hours. The ZK6IM wrought magnesium alloy casting technology has the advantages that the microsegregation force is eliminated, the hardness is greatly reduced, and the machining and forming property is improved effectively.

Description

[0001] technical field [0002] The invention belongs to the technical field of alloy cast iron casting, and in particular relates to a ZK6IM deformed magnesium alloy casting process. [0003] Background technique [0004] According to different production processes, magnesium alloys can be divided into cast magnesium alloys and wrought magnesium alloys. Since the magnesium alloy belongs to the close-packed hexagonal structure, its plastic deformation ability is poor. It is difficult to process into plates, strips, rods, and profiles, so casting magnesium alloys is currently widely used, and castings are used as structural materials. The production of wrought magnesium alloys is very difficult and the technology is not perfect. It has become the main problem restricting the wide application of magnesium alloys. [0005] Contents of the invention [0006] In order to overcome the above-mentioned problems in the prior art, the object of the present invention is to pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D21/04B22D11/04
CPCB22D21/04B22D11/04B22D11/18B22D11/225
Inventor 常云青
Owner QINGDAO HEDELONG MACHINERY
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