7-series aluminum alloy for container and machining process thereof

A processing technology, aluminum alloy technology, applied in the field of 7-series aluminum alloy for containers and its processing technology, can solve problems such as poor strength matching, and achieve the effect of good shape and strength matching

Inactive Publication Date: 2019-03-12
TIANJIN ZHONGWANG ALUMINUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention provides a 7-series aluminum alloy for containers and its processing techno...

Method used

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  • 7-series aluminum alloy for container and machining process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A processing technology of 7 series aluminum alloys for containers, comprising the steps of:

[0025] A. Prepare 7-series aluminum alloy raw materials according to the following ratios in parts by weight:

[0026] element

Si

Fe

Cu

mn

Mg

Cr

Zn

Ti

Zr

Impurities

Al

content

0.035

0.11

0.006

0.001

1.52

0.001

5.69

0.028

0.10

0.10

margin

[0027] The prepared aluminum alloy raw materials are melted and alloyed in the smelting furnace, and then poured into the holding furnace, refined in the holding furnace, degassed online, and filtered online, and then cast into aluminum alloy ingots. Aluminum alloy melt refining During the process, high-purity chlorine and argon mixed gas are filled into the bottom of the smelting furnace to remove impurity gases in the aluminum alloy melt. The addition of the additive is 0.1% of the weight of the aluminum alloy melt;

[0028] B. Homogenize the a...

Embodiment 2

[0035] A processing technology of 7 series aluminum alloys for containers, comprising the steps of:

[0036] A. Prepare 7-series aluminum alloy raw materials according to the following ratios in parts by weight:

[0037] element

Si

Fe

Cu

mn

Mg

Cr

Zn

Ti

Zr

Impurities

Al

content

0.04

0.12

0023

0.005

1.7

0.002

6.0

0.026

0.14

0.10

margin

[0038] The prepared aluminum alloy raw materials are melted and alloyed in the smelting furnace, and then poured into the holding furnace, refined in the holding furnace, degassed online, and filtered online, and then cast into aluminum alloy ingots. Aluminum alloy melt refining During the process, high-purity nitrogen gas is filled into the bottom of the smelting furnace to remove impurity gases in the aluminum alloy melt. During the casting process of the aluminum alloy melt, an aluminum-titanium-boron wire refiner is added to the launder. The amount...

Embodiment 3

[0046] A processing technology of 7 series aluminum alloys for containers, comprising the steps of:

[0047] A. Prepare 7-series aluminum alloy raw materials according to the following ratios in parts by weight:

[0048] element

Si

Fe

Cu

mn

Mg

Cr

Zn

Ti

Zr

Impurities

Al

content

0.03

0.23

0.003

0.001

1.9

0.002

6.25

0.027

0.13

0.10

margin

[0049] The prepared aluminum alloy raw materials are melted and alloyed in the smelting furnace, and then poured into the holding furnace, refined in the holding furnace, degassed online, and filtered online, and then cast into aluminum alloy ingots. Aluminum alloy melt refining During the process, a mixture of high-purity argon and chlorine gas is filled into the bottom of the melting furnace to remove impurity gases in the aluminum alloy melt. The addition of the additive is 0.1% of the weight of the aluminum alloy melt;

[0050] B. Homogenize the ...

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Abstract

The invention belongs to the technical field of aluminum alloy machining and manufacturing and relates to a 7-series aluminum alloy for a container and a machining process thereof. The machining process comprises the steps of material mixing, smelting, casting, soaking, saw cutting and face milling, heating, hot rolling, solution quenching and artificial ageing. By changing alloy components, the main low-melting-point phases of an aluminum alloy cast ingot before homogenizing treatment belong to MgZn2, the diffusion velocity of Mg and Zn in an Al matrix at high temperature is high, and the MgZn2 phases can be rapidly dissolved. Thus, grains can be protected against abnormal growth without overburning within the soaking temperature range of 440-500 DEG C. After the aluminum alloy cast ingotis subjected to homogenizing heat treatment, the big low-melting-point phases are dissolved and disappears or is in a rounded spherical and are rolled and crushed into fine soluble phases, the high supersaturated solid solution creation condition is provided for short-time solution quenching treatment of a finished product, and then an aluminum alloy plate with good plate shape and strength matching degree is obtained.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy processing and manufacturing, and relates to a 7-series aluminum alloy for a container and a processing technology thereof. Background technique [0002] Container selection mainly includes steel, aluminum and so on. As countries around the world pay more attention to the ecological environment, the weight reduction of containers has become a development trend. Compared with steel, aluminum has low density, corrosion resistance, and easy recycling. Therefore, replacing steel with aluminum has become the first choice for container weight reduction. However, the strength of aluminum is low, easy to deform, and the cost is high. At present, the main aluminum alloys used in containers are 5052, 6060, 6061, 6063, and 6082. The strength of 5052 alloy mainly depends on work hardening, and its H24 state tensile strength is about 250MPa; while 6xxx series aluminum alloys mainly rely on precipitati...

Claims

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Application Information

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IPC IPC(8): C22C21/10C22F1/053C22C1/03C22C1/06
CPCC22C1/026C22C1/03C22C1/06C22C21/10C22F1/053
Inventor 刘俊涛赵俊才杜凤彪葛浩龙张立鑫郭富安
Owner TIANJIN ZHONGWANG ALUMINUM IND CO LTD
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