High-strength alloy with excellent extruding property

A high-strength alloy and excellent technology, applied in the field of alloys, can solve the problems of insufficient elongation in the subsequent cold working, insufficient yield strength performance, and inability to pass the load, so as to improve the ability of three-dimensional modeling, high yield strength, and expand the use space. Effect

Inactive Publication Date: 2015-04-29
苏州莱恩精工合金股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Recently, during the development of a high-strength ladder of the applicant, it was found that the living hinge had the following two problems in the test: a. The tensile strength of the product produced by the existing alloy is about 350MPa, and the hinge's resistance is about 350MPa. The performance of tensile strength and yield strength is not enough, and the load cannot pass during the test; b. When a higher strength alloy is used, its tensile strength can reach about 500MPa, but the elongation is 10%. Extrusion is extremely difficult, and the subsequent Insufficient cold working elongation leads to processing difficulties

Method used

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  • High-strength alloy with excellent extruding property

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Experimental program
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Effect test

Embodiment 1

[0039] Embodiment 1: A high-strength alloy with excellent extrusion performance, the composition is composed of the following components in weight percentage:

[0040] Silicon 0.10~0.12%;

[0041] Iron ≤0.12%;

[0042] Copper 0.52~0.55%;

[0043] Manganese ≤0.1%;

[0044] Magnesium 1.0~1.05%;

[0045] Chromium 0.1~0.12%;

[0046] Zinc 5.2~5.4%;

[0047] Titanium ≤0.1%;

[0048] Zirconium 0.05~0.1%;

[0049] The balance is aluminum and impurities with a content of ≤0.1%, and the content of a single component in the impurities is ≤0.03%; its performance test is shown in Table 1.

Embodiment 2

[0050] Embodiment 2: A high-strength alloy with excellent extrusion performance, the composition is composed of the following components in weight percentage:

[0051] Silicon 0.08~0.12%;

[0052] Iron ≤0.14%;

[0053] Copper 0.5~0.55%;

[0054] Manganese ≤0.1%;

[0055] Magnesium 0.95~1.0%;

[0056] Chromium 0.08~0.12%;

[0057] Zinc 5.5~5.9%;

[0058] Titanium ≤0.1%;

[0059] Zirconium 0.05~0.1%;

[0060] The balance is aluminum and impurities with a content of ≤0.1%, and the content of a single component in the impurities is ≤0.03%; its performance test is shown in Table 1.

Embodiment 3

[0061] Embodiment 3: A high-strength alloy with excellent extrusion performance, the composition is composed of the following components in weight percentage:

[0062] Silicon 0.10~0.14%;

[0063] Iron ≤0.18%;

[0064] Copper 0.54~0.6%;

[0065] Manganese ≤0.1%;

[0066] Magnesium 0.95~1.2%;

[0067] Chromium 0.1~0.14%;

[0068] Zinc 5.6~6.1%;

[0069] Titanium ≤0.1%;

[0070] Zirconium 0.05~0.1%;

[0071] The balance is aluminum and impurities with a content of ≤0.1%, and the content of a single component in the impurities is ≤0.03%; its performance test is shown in Table 1.

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Abstract

The invention discloses a high-strength alloy with excellent extruding property. The high-strength alloy is characterized by comprising the following components in percentage by weight: not more than 0.15% of silicon, not more than 0.3% of iron, 0.45%-0.7% of copper, not more than 0.1% of manganese, 0.8%-1.5% of magnesium, 0.05%-0.25% of chrome, 5.0%-6.5% of zinc, not more than 0.1% of titanium, 0.05%-0.1% of zirconium and the balance of aluminum and impurities of which the content is not more than 0.1%, wherein the content of a single component in the impurities is not more than 0.03%; the ratio of copper to magnesium is controlled to 100 : (114-333); and the ratio of magnesium to zinc is controlled to 100 : (333-813). The high-strength alloy is excellent in extruding property; the tensile strength is greater than or equal to 400MPa; the yield strength is greater than or equal to 380MPa; the ductility is greater than or equal to 15%; the high-strength alloy is easily to extrude and process when applied to a hinge, and is free of cracking in cold working and molding; and the whole ladder load test after the alloy is assembled into a whole ladder can smoothly pass.

Description

technical field [0001] The invention relates to an alloy, in particular to a high-strength alloy with excellent extrusion performance. The alloy is used to produce aluminum alloy profiles of various cross-sections, and is widely used in structural parts of various products, such as automobile girders, rim hubs, and various ladder movable hinges. Background technique [0002] Aluminum alloy profiles are widely used profiles and have a certain history. In the long-term use process, the composition content and composition relationship of the alloy have been adjusted and tried according to people's actual use needs. [0003] Recently, during the development of a high-strength ladder of the applicant, it was found that the living hinge had the following two problems in the test: a. The tensile strength of the product produced by the existing alloy is about 350MPa, and the hinge's resistance is about 350MPa. The performance of tensile strength and yield strength is not enough, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10
CPCC22C21/10
Inventor 谢小燕
Owner 苏州莱恩精工合金股份有限公司
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