CN103667752A

CN103667752A - Preparation technology of aluminum alloy sectional material

Info

Publication number: CN103667752A
Application number: CN201310587544.8A
Authority: CN
Inventors: 茹林宝
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-20
Filing date: 2013-11-20
Publication date: 2014-03-26

Abstract

The invention provides a preparation technology of an aluminum alloy sectional material. The aluminum alloy sectional material comprises the following elements in percentage by mass: 1.5-1.9% of Mg, 2.5-2.8% of Si, 0.03-0.06% of Mn, 0.80-1.50% of Cu, 0.05-0.10% of Fe, 0.03-0.08% of Ti, 0.03-0.06% of Cr, 0.03-0.06% of Zr, 0.12-0.20% of P, 0.20-0.30% of Sn and the balance of Al. The manufacturing process is as follows: (1) adding the above raw materials into a smelting furnace for smelting and casting to obtain an aluminum cast bar; (2) extruding and shaping the aluminum cast bar to obtain an extrusion sectional material; (3) performing aging treatment on the extrusion sectional material to obtain the aluminum alloy sectional material. The aluminum alloy sectional material prepared through the method disclosed by the invention has high strength and excellent plasticity, and is better in sectional material demoulding, structure refinement and surface smoothness.

Description

The preparation technology of aluminium alloy extrusions

Technical field

The present invention relates to a kind of preparation technology of aluminium alloy extrusions.

Background technology

Aluminium alloy extrusions is a most widely used class non-ferrous metal structured material in industry, at Aeronautics and Astronautics, automobile, machinofacture, boats and ships, in building, finishing and chemical industry, widely applies; Especially along with the burning hot expansion of real estate industry, aluminium alloy extrusions has become the outer manifestation of going along with sb. to guard him within the walls important in current building, embodied the new concept of modern architecture, because aluminium alloy extrusions intensity is large, be difficult for getting rusty, with common iron, compare, weight is lighter, more be conducive to the construction of construction work, be widely used.But the intensity of existing aluminium alloy extrusions, erosion resistance and weather-resistant property cannot meet the requirement of buildings.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of preparation technology of aluminium alloy extrusions, and the plasticity of high while of product strength making is good.

For solving above-mentioned existing technical problem, the present invention adopts following scheme: the preparation technology of aluminium alloy extrusions, and described aluminium alloy extrusions comprises following component by mass percentage: Mg:1.5%～1.9%, Si:2.5%～2.8%, Mn:0.03%～0.06%, Cu:0.80%～1.50%, Fe:0.05%～0.10%, Ti:0.03%～0.08%, Cr:0.03%～0.06%, Zr:0.03%～0.06%, P:0.12%～0.20%, Sn:0.20%～0.30%, all the other are Al; Making processes is as follows: 1) above-mentioned raw materials is added to smelting furnace melting, until temperature in smelting furnace, rise to after 730 ℃～760 ℃, adopt magnetic stirrer to stir melt 10～20min and make in molten bath temperature uniformity everywhere, recycling refining agent carries out refining treatment to aluminium alloy melt, and after then melt being infused into temperature range keeping 10～20min in the standing furnace of 720 ℃～740 ℃, casting obtains aluminium casting rod; 2) extrusion moulding of aluminium casting rod is obtained to extruded section; 3) carry out ageing treatment in entering aging oven and obtain aluminium alloy extrusions extruded section is in-built at 8 hours, aging temp is 180～200 ℃, and soaking time is 12～14 hours.

As preferably, described aluminium alloy extrusions comprises following component: Mg:1.5% by mass percentage, Si:2.5%, and Mn:0.03%, Cu:0.80%, Fe:0.05%, Ti:0.03%, Cr:0.03%, Zr:0.03%, P:0.12%, Sn:0.20%, all the other are Al.

As preferably, described aluminium alloy extrusions comprises following component: Mg:1.9% by mass percentage, Si:2.8%, and Mn:0.06%, Cu:1.50%, Fe:0.10%, Ti:0.08%, Cr:0.06%, Zr:0.06%, P:0.20%, Sn:0.30%, all the other are Al.

As preferably, described aluminium alloy extrusions comprises following component: Mg:1.8% by mass percentage, Si:2.6%, and Mn:0.05%, Cu:1.20%, Fe:0.08%, Ti:0.05%, Cr:0.04%, Zr:0.04%, P:0.15%, Sn:0.25%, all the other are Al.

As preferably, described aluminium alloy extrusions comprises following component: Mg:1.8% by mass percentage, Si:1.2%, and Mn:0.04%, Cu:1.50%, Fe:0.06%, Ti:0.05%, Cr:0.04%, Zr:0.05%, P:0.18%, Sn:0.20%, all the other are Al.

Beneficial effect:

The present invention adopts the preparation technology of the aluminium alloy extrusions that technique scheme provides, by optimizing component and controlling founding and aging technique, product strength is high, and plasticity is good simultaneously, and yield strength is low and unit elongation is high, simultaneously better aspect the section bar demoulding, structure refinement and surface smoothness.

Embodiment

Embodiment mono-: the preparation technology of aluminium alloy extrusions, described aluminium alloy extrusions comprises following component: Mg:1.5%, Si:2.5%, Mn:0.03% by mass percentage, Cu:0.80%, Fe:0.05%, Ti:0.03%, Cr:0.03%, Zr:0.03%, P:0.12%, Sn:0.20%, all the other are Al; Making processes is as follows: 1) above-mentioned raw materials is added to smelting furnace melting, until temperature in smelting furnace, rise to after 730 ℃～760 ℃, adopt magnetic stirrer to stir melt 10～20min and make in molten bath temperature uniformity everywhere, recycling refining agent carries out refining treatment to aluminium alloy melt, and after then melt being infused into temperature range keeping 10～20min in the standing furnace of 720 ℃～740 ℃, casting obtains aluminium casting rod; 2) aluminium casting rod is heated to 480～510 ℃, in extrusion machine with the speed of 300mm～500mm/ minute extrude, water-cooled obtains extruded section, wherein pressure-controlling is 180 ± 20kg/m2 during extrusion machine extruding, water-cooled speed is 150～180 ℃/min; 3) carry out ageing treatment in entering aging oven and obtain aluminium alloy extrusions extruded section is in-built at 8 hours, aging temp is 180～200 ℃, and soaking time is 12～14 hours.

Embodiment bis-: be with the difference of embodiment mono-, described aluminium alloy extrusions comprises following component: Mg:1.9%, Si:2.8%, Mn:0.06% by mass percentage, Cu:1.50%, Fe:0.10%, Ti:0.08%, Cr:0.06%, Zr:0.06%, P:0.20%, Sn:0.30%, all the other are Al.

Embodiment tri-: be with the difference of embodiment mono-, described aluminium alloy extrusions comprises following component: Mg:1.8%, Si:2.6%, Mn:0.05% by mass percentage, Cu:1.20%, Fe:0.08%, Ti:0.05%, Cr:0.04%, Zr:0.04%, P:0.15%, Sn:0.25%, all the other are Al.

Embodiment tetra-: be with the difference of embodiment mono-, described aluminium alloy extrusions comprises following component: Mg:1.8%, Si:1.2%, Mn:0.04% by mass percentage, Cu:1.50%, Fe:0.06%, Ti:0.05%, Cr:0.04%, Zr:0.05%, P:0.18%, Sn:0.20%, all the other are Al.

The prepared aluminium alloy extrusions of the present invention, intensity is high, and plasticity is good, and yield strength is low and unit elongation is high, simultaneously better aspect the section bar demoulding, structure refinement and surface smoothness.

Claims

1. the preparation technology of aluminium alloy extrusions, is characterized in that, described aluminium alloy extrusions comprises following component by mass percentage: Mg:1.5%～1.9%, Si:2.5%～2.8%, Mn:0.03%～0.06%, Cu:0.80%～1.50%, Fe:0.05%～0.10%, Ti:0.03%～0.08%, Cr:0.03%～0.06%, Zr:0.03%～0.06%, P:0.12%～0.20%, Sn:0.20%～0.30%, all the other are Al; Making processes is as follows: 1) above-mentioned raw materials is added to smelting furnace melting, until temperature in smelting furnace, rise to after 730 ℃～760 ℃, adopt magnetic stirrer to stir melt 10～20min and make in molten bath temperature uniformity everywhere, recycling refining agent carries out refining treatment to aluminium alloy melt, and after then melt being infused into temperature range keeping 10～20min in the standing furnace of 720 ℃～740 ℃, casting obtains aluminium casting rod; 2) extrusion moulding of aluminium casting rod is obtained to extruded section; 3) carry out ageing treatment in entering aging oven and obtain aluminium alloy extrusions extruded section is in-built at 8 hours, aging temp is 180～200 ℃, and soaking time is 12～14 hours.

2. the preparation technology of aluminium alloy extrusions according to claim 1, it is characterized in that: described aluminium alloy extrusions comprises following component: Mg:1.5%, Si:2.5%, Mn:0.03% by mass percentage, Cu:0.80%, Fe:0.05%, Ti:0.03%, Cr:0.03%, Zr:0.03%, P:0.12%, Sn:0.20%, all the other are Al.

3. the preparation technology of aluminium alloy extrusions according to claim 1, it is characterized in that: described aluminium alloy extrusions comprises following component: Mg:1.9%, Si:2.8%, Mn:0.06% by mass percentage, Cu:1.50%, Fe:0.10%, Ti:0.08%, Cr:0.06%, Zr:0.06%, P:0.20%, Sn:0.30%, all the other are Al.

4. the preparation technology of aluminium alloy extrusions according to claim 1, it is characterized in that: described aluminium alloy extrusions comprises following component: Mg:1.8%, Si:2.6%, Mn:0.05% by mass percentage, Cu:1.20%, Fe:0.08%, Ti:0.05%, Cr:0.04%, Zr:0.04%, P:0.15%, Sn:0.25%, all the other are Al.

5. the preparation technology of aluminium alloy extrusions according to claim 1, it is characterized in that: described aluminium alloy extrusions comprises following component: Mg:1.8%, Si:1.2%, Mn:0.04% by mass percentage, Cu:1.50%, Fe:0.06%, Ti:0.05%, Cr:0.04%, Zr:0.05%, P:0.18%, Sn:0.20%, all the other are Al.