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Aluminum profile and heating processing technology thereof

An aluminum profile, soaking heat treatment technology, applied in the field of aluminum profile processing, can solve the problems of insufficient fracture toughness and fatigue performance, low strength of aluminum profiles, etc., and achieve the effect of improving performance and metallographic structure

Inactive Publication Date: 2013-01-09
张家港市金邦铝业股份有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides an aluminum profile and its heat treatment process, the purpose of which is mainly to solve the problems of low strength, insufficient fracture toughness and fatigue performance of the aluminum profile in the prior art

Method used

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  • Aluminum profile and heating processing technology thereof
  • Aluminum profile and heating processing technology thereof
  • Aluminum profile and heating processing technology thereof

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Embodiment

[0025] Such as figure 1 Shown, an aluminum profile, the aluminum profile 1 is circular, the inner diameter of the circular aluminum profile 1 is 31.4 mm ± 0.2; the wall thickness of the circular aluminum profile 1 is 3.6 mm; and the composition The mass percent of each component of the aluminum profile aluminum alloy is:

[0026]

[0027] Such as figure 2 As shown, a heat treatment process for aluminum profiles adopts the above-mentioned raw material ratio, and the heat treatment process includes the following steps:

[0028] (1) Smelting and casting raw aluminum ingots: the casting speed is 85-95mm / min; the casting temperature is 715-730°C; the cooling water pressure is 0.04-0.08MPa;

[0029] (2) Soaking treatment: Soaking the aluminum ingot after smelting and casting in step (1);

[0030] (3) Long ingot hot shearing: perform long ingot hot shearing on the aluminum ingot after soaking treatment;

[0031] (4) Extrusion: the extrusion temperature is 440~460°C, and the e...

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Abstract

An aluminum profile is annular and is prepared by components in percentage by weight: 91-93% of Al, 5.5-5.7% of Zn, 0.15-0.2% of Si, 0.80-0.86% of Mg, 0.1-0.14% of Cu, 0.2-0.35% of Fe, 0.1-0.12% of Cr, 0.15-0.2% of Mn, 0.1-0.25% of Zr and 0.1-0.2% of Ti. A heating processing technology comprises following steps of: (1) smelting and casting raw material aluminum ingots, enabling a casting speed to be 85-95mm / min, enabling a pouring temperature to be 715-730 DEG C, and enabling cooling water pressure to be 0.04-0.08MPa; (2) extruding, enabling an extruding temperature to be 440-460DEG C, and enabling an extruding speed to be 3-6M / min; (3) conducting stretcher strengthening, and enabling strengthening deformation quantity to be 0.5%-1.5%; (4) conducting aging furnace heating, enabling a furnace temperature of an aging furnace at a first section of aging to be 100 DEG C, enabling heat preservation time to be 3h, enabling the furnace temperature of the aging furnace at a second section of aging to be 160 DEG C, and enabling heat preservation time to be 5h; and (5) testing and packaging. The aluminum profile mainly solves the problem that the aluminum profile in the prior art is not high in strength, poor in breakage toughness and poor in fatigue performance.

Description

technical field [0001] The invention belongs to the technical field of aluminum profile processing, and relates to an aluminum profile used in bicycle components and a heat treatment process thereof. Background technique [0002] Aluminum profiles are aluminum materials with different cross-sectional shapes obtained by hot-melting and extruding aluminum rods. Aluminum profiles are widely used in various production sectors, such as automobiles, motorcycles, bicycle accessories, building materials (locks and door handles), hardware and electrical appliances, etc. The aluminum profile is easy to damage due to its low strength. In order to improve the strength, fracture toughness and fatigue performance of the aluminum profile, the most direct method is to increase the purity of the raw material and reduce the content of Fe and Si in the aluminum alloy. Costs can only add up and may be difficult to achieve in metallurgical processes. [0003] Therefore, how to improve the stre...

Claims

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Application Information

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IPC IPC(8): C22C21/10C22F1/053
Inventor 卢秋虎
Owner 张家港市金邦铝业股份有限公司
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