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A kind of aluminum alloy extruded plate for stamping and heat treatment method thereof

A heat treatment method and aluminum alloy technology, which is applied in the field of aluminum alloy, can solve problems such as easy cracking and high strength, and achieve the effects of improving mechanical properties, reducing hardness, and eliminating segregation

Active Publication Date: 2021-08-27
CHIZHOU JIUHUA MINGKUN ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a stampable aluminum alloy extruded plate and its heat treatment method to solve the problem that the existing aluminum alloy has high strength after cooling treatment and is prone to cracking during stamping

Method used

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  • A kind of aluminum alloy extruded plate for stamping and heat treatment method thereof

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Embodiment 1

[0012] As shown in Figure 1, a stampable aluminum alloy extruded plate and heat treatment method thereof, the aluminum alloy includes the following components: 1.14wt% Mg, 0.94wt% Si, 0.62wt% Cu, 0.23wt% Mn, 0.02wt% Ti, 0.002wt% Cr, 0.14wt% Zr, 0.09wt% Fe, the rest being Al.

[0013] This heat treatment method of the present invention comprises the following steps:

[0014] 1) Homogenization: Place the aluminum alloy extruded plate for stamping in a heat treatment furnace for homogenization treatment, thereby eliminating segregation. The homogenization treatment temperature is 535° C., and the homogenization treatment time is 2 hours;

[0015] 2) Air-cooling pre-aging: The aluminum alloy extruded plate after the homogenization treatment in step 1) is first continuously passed through the air-cooled box for forced cooling to room temperature, and then pre-aging treatment is performed at a heating rate of 150°C / 40min, thereby improving The elongation rate of the aluminum alloy ...

Embodiment 2

[0018] As shown in Figure 1, a stampable aluminum alloy extruded plate and its heat treatment method, the aluminum alloy includes the following components: 1.10wt% Mg, 0.91wt% Si, 0.60wt% Cu, 0.203wt% Mn, 0.01wt% Ti, 0.001wt% Cr, 0.12wt% Zr, 0.08wt% Fe, the rest being Al.

[0019] This heat treatment method of the present invention comprises the following steps:

[0020] 1) Homogenization: Place the aluminum alloy extruded plate for stamping in a heat treatment furnace for homogenization treatment, thereby eliminating segregation. The homogenization treatment temperature is 530°C, and the homogenization treatment time is 2 hours;

[0021] 2) Air-cooling pre-aging: The aluminum alloy extruded plate after the homogenization treatment in step 1) is first continuously passed through the air-cooled box for forced cooling to room temperature, and then pre-aging treatment is performed at a heating rate of 150°C / 40min, thereby improving Aluminum alloy extruded plate elongation, the c...

Embodiment 3

[0024] As shown in Figure 1, a stampable aluminum alloy extruded plate and its heat treatment method, the aluminum alloy includes the following components: 1.12wt% Mg, 0.93wt% Si, 0.61wt% Cu, 0.22wt% Mn, 0.015wt% Ti, 0.0015wt% Cr, 0.13wt% Zr, 0.085wt% Fe, the rest being Al.

[0025] This heat treatment method of the present invention comprises the following steps:

[0026] 1) Homogenization: place the aluminum alloy extruded plate for stamping in a heat treatment furnace for homogenization treatment, thereby eliminating segregation. The homogenization treatment temperature is 533° C., and the homogenization treatment time is 2 hours;

[0027] 2) Air-cooling pre-aging: The aluminum alloy extruded plate after the homogenization treatment in step 1) is first continuously passed through the air-cooled box for forced cooling to room temperature, and then pre-aging treatment is performed at a heating rate of 150°C / 40min, thereby improving Aluminum alloy extruded plate elongation, t...

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Abstract

The invention discloses an aluminum alloy extruded plate for stamping and a heat treatment method thereof. The aluminum alloy comprises the following components: 1.10-1.14wt% Mg, 0.91-0.94wt% Si, 0.60-0.62wt% Cu, 0.20 ~0.23wt% Mn, 0.01~0.02wt% Ti, 0.001~0.002wt% Cr, 0.12~0.14wt% Zr, 0.08~0.09wt% Fe, the rest is Al, add 0.12~0.14wt% transition group element Zr, Zr is dispersed in the aluminum alloy extruded plate, which plays the role of fine grain strengthening and dispersion strengthening, and improves the mechanical properties of the aluminum alloy extruded plate. Reduce the hardness of the aluminum alloy extruded plate and improve the ductility, so as to ensure that it is not easy to crack during stamping, and improve the yield of stamping parts.

Description

technical field [0001] The invention relates to an aluminum alloy, in particular to an aluminum alloy extruded plate for stamping and a heat treatment method thereof. Background technique [0002] With the rapid advancement of my country's large-scale infrastructure investment and industrialization process, the output and consumption of the entire aluminum profile industry have grown rapidly, and my country has also become the world's largest aluminum profile production base and consumer market. Extrusion molding refers to a processing method in which the material passes through the action of a press, while being heat-plasticized, pushing forward, and continuously passing through the mold in the machine head to make various cross-section products. Aluminum products need cooling and aging treatment to strengthen the strength of aluminum profiles. Existing aluminum alloys have high strength after cooling treatment, and are prone to cracking and other defects during stamping. As ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22F1/047
CPCC22C21/08C22F1/047
Inventor 王东明吴先志何木生周景兰周友斌周士昂吴隆刘瑰李加佳方颖
Owner CHIZHOU JIUHUA MINGKUN ALUMINUM IND