Aluminum alloy extruded bar and its preparation process

A preparation process and technology of aluminum alloy, applied in the field of aluminum alloy extruded bar and its preparation process, can solve the problems of easy sticking of knives and wrinkling, poor machinability of alloy, etc., and achieve the elimination of dendrite segregation and good turning performance. , the effect of good extrusion formability

Active Publication Date: 2019-08-09
GUANGDONG HOSHION IND ALUMINUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on the requirements for the strength of aluminum alloys for automobile plates, but 3003 aluminum alloys cannot be strengthened by heat treatment, so cold working methods are used to improve its mechanical properties: it has high plasticity in the annealed state, and the plasticity is still good when it is hardened in semi-cold work. Low plasticity when hardened, good corrosion resistance, and good weldability; however, overall, the alloy has poor machinability, sticks to knives, and wrinkles

Method used

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  • Aluminum alloy extruded bar and its preparation process
  • Aluminum alloy extruded bar and its preparation process
  • Aluminum alloy extruded bar and its preparation process

Examples

Experimental program
Comparison scheme
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Embodiment 1-4

[0042] The aluminum alloy extruded rod described in Examples 1-4 includes the components shown in Table 1 by mass percentage, and the content of other impurities is not more than 0.15%, and the balance is Al.

[0043] components Example 1 Example 2 Example 3 Example 4 Si 0.4 0.5 0.45 0.4 Fe 0.6 0.6 0.55 0.6 Cu 0.2 0.2 0.15 0.2 mn 1 1.2 1.1 1 Ti 0.03 0.05 0.02 0.03

[0044] Table 1

[0045] The raw materials for preparing the above-mentioned aluminum alloy extruded rods are as follows:

[0046] Aluminum ingots: Aluminum ingots with the brand name Al99.7 are used, and the mass percentage of Al in the aluminum ingots is more than 99.70%, which meets the standard GB / T 1196-2008 "Aluminum Ingots for Remelting";

[0047] Alloy additives (aluminum-silicon, aluminum-manganese, aluminum-iron, aluminum-copper): use AlSi12, AlMn13, AlFe20 and AlCu40 master alloys respectively, and the quality meets the YS / T282-2000 stand...

Embodiment 1

[0090] The alloy flanging described in embodiment 1 and the cutting surface are smooth, such as Figure 4 shown. Comparative example 2 flanging cracking such as Figure 5 As shown, comparative example 4 flanging is wrinkled as Figure 6 shown. Through the comparison of the above experimental results and data, it can be seen that the reasonable ratio of the alloy components and the design of the corresponding process conditions in the present invention effectively avoid the formation of complete recrystallization or mixed crystals of the material, and obtain good extrusion formability, At the same time, it has good turning performance and is suitable for machining materials such as flanging and CNC.

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Abstract

The invention relates to an aluminum alloy extruded bar and a preparation technology thereof. The aluminum alloy extruded bar comprises, by mass, 0.4-0.5% of Si, 0.5-0.6% of Fe, 0.15-0.20% of Cu, 1.0-1.2% of Mn, no more than 0.10% of Ti, less than 0.15% of other impurities, and the balance Al. The preparation technology comprises the following steps of smelting, alloying, refining, semi continuouswater-cooling casting, two-stage homogenizing treatment, water mist strong cooling, sawing, three-stage heating, quenching, stretching straightening and the like. The aluminum alloy extruded bar hasgood strength and machining performance and stable alloy fiber crystal crystallization.

Description

technical field [0001] The invention belongs to the field of aluminum alloy materials and its manufacture, and in particular relates to an aluminum alloy extruded rod and its preparation process. Background technique [0002] 3003 aluminum alloy material, because of its safety, comfort, beauty and durability, light weight, easy assembly and maintenance, and easy recycling, is widely used in environmentally friendly auto parts, especially in various types of auto sheet profiles and new energy vehicles. Applications in components are increasing day by day. Relevant research data show that steel parts such as body (about 30%), engine (about 18%), transmission system (15%), walking system (about 16%), wheels (about 5%), etc. Use aluminum. Among them, 3003 belongs to the 3000 series alloy, which is the most widely used antirust aluminum. The strength of this alloy is slightly higher than that of industrial pure aluminum, and it has good formability, weldability and corrosion re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/02C22F1/04
CPCC22C1/026C22C21/00C22F1/04
Inventor 丁小理李建湘罗杰刘志成刘经发阮淑愿周旺
Owner GUANGDONG HOSHION IND ALUMINUM CO LTD
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