Preparation method of large-sized Al-Mg-Si-Mn alloy tube for textile equipment

Abstract

The invention relates to the technical field of alloy profile preparation, in particular to a preparation method of a large-sized Al-Mg-Si-Mn alloy tube for textile equipment. The specific steps include casting and ingot casting, die heating, extrusion container heating, ingot casting heating, extrusion production, in-line precision quenching, stretching and straightening, finished product cutting, artificial seasoning, performance detecting and packaging and warehousing. The large-sized Al-Mg-Si-Mn alloy tube comprises the following components, by weight: 0.7-1.1% of Mg, 0.8-1.2% of Si, 0.4-0.5% of Mn and no more than 0.5% of Fe, further comprises at least one of the following elements: no more than 0.10% of Cr, no more than 0.05% of Zn, no more than 0.05% of Cu, no more than 0.05% of Ti, and no more than 0.03% of V, and the balance Al. Compared with traditional extrusion methods, according to the preparation method of the large-sized Al-Mg-Si-Mn alloy tube for the textile equipment, the components of Al-Mg-Si-Mn alloy and technology ranges of all extrusion processes are adjusted, the technology control process is more refined, the production stability is guaranteed, at the same time, precise in-line water spray quenching is adopted, so that mechanical properties are much better, good uniformity of the tube after being extruded can be guaranteed, and the production efficiency is improved greatly.

Description

technical field

[0001] The invention relates to the technical field of preparation of alloy profiles, in particular to a method for preparing large-scale Al-Mg-Si-Mn alloy pipes for textile equipment. Background technique

[0002] Compared with other aluminum alloys, Al-Mg-Si-Mn alloy has moderate strength and excellent welding performance, and has been widely used in textile equipment and other fields. However, this alloy requires reasonable extrusion temperature and extrusion speed, high requirements for extrusion process control, high quenching sensitivity, and cannot meet the mechanical property requirements of the product through ordinary online quenching, resulting in the performance of the textile round tube during high-speed rotation. Unstable, industrial production products can only be produced through offline quenching. At the same time, the offline quenching pipe is seriously deformed and the pipe precision is poor. The ovality can only be improved through subsequ...

Examples

Embodiment 1

[0031] A kind of preparation method of large-scale Al-Mg-Si-Mn alloy pipe material for textile equipment, such as figure 1 shown, including the following steps:

[0032] (1) Casting ingots, the cast alloy is large-scale Al-Mg-Si-Mn alloy ingots, the outer diameter of the round tube of large-scale Al-Mg-Si-Mn alloy ingots is Ø400mm, and the wall thickness is 15mm; The composition and weight percentage of Al-Mg-Si-Mn alloy ingot are: Mg is 0.98%, Si is 0.95%, Mn is 0.46%, Fe is 0.15%, Cr is 0.05%, Zn is 0.03%, Cu is 0.03%, Ti is 0.03%, V is 0.02, and the rest is Al;

[0033] (2) Mold heating: heat the mold to 490°C in a heating furnace and keep it warm for 12 hours;

[0034] (3) Extrusion cylinder heating: heat the extrusion cylinder, and control the temperature of the extrusion cylinder at 390°C;

[0035] (4) Ingot heating: Heating the ingot with a length of 1800mm, adopting the gradient heating method, the temperature difference between the head and the tail is 20°C, and th...

Embodiment 2

[0046] A method for preparing large-scale Al-Mg-Si-Mn alloy pipes for textile equipment, comprising the following steps:

[0047] (1) Casting ingots, the cast alloy is large-scale Al-Mg-Si-Mn alloy ingots, the outer diameter of the round tube of large-scale Al-Mg-Si-Mn alloy ingots is Ø300mm, and the wall thickness is 8mm; The composition and weight percentage of Al-Mg-Si-Mn alloy ingot are: Mg is 0.7%, Si is 0.8%, Mn is 0.4%, Fe is 0.15%, Cr is 0.05%, Zn is 0.03%, Cu is 0.03%, Ti is 0.03%, V is 0.02, and the rest is Al;

[0048] (2) Mold heating: heat the mold to 465°C in a heating furnace and keep it warm for 12 hours;

[0049] (3) Extrusion cylinder heating: heat the extrusion cylinder, and control the temperature of the extrusion cylinder at 300°C;

[0050](4) Ingot heating: Heating the ingot with a length of 600mm, adopting the gradient heating method, the temperature difference between the head and the tail is 6°C, and the heating temperature of the ingot in the heatin...

Embodiment 3

[0061] A method for preparing large-scale Al-Mg-Si-Mn alloy pipes for textile equipment, comprising the following steps:

[0062] (1) Casting ingots, the alloys cast are large-scale Al-Mg-Si-Mn alloy ingots, the outer diameter of the round tube of large-scale Al-Mg-Si-Mn alloy ingots is Ø500mm, and the wall thickness is 30mm; The composition and weight percentage of Al-Mg-Si-Mn alloy ingot are: Mg is 1.1%, Si is 1.2%, Mn is 0.5%, Fe is 0.15%, Cr is 0.05%, Zn is 0.03%, Cu is 0.03%, Ti is 0.03%, V is 0.02, and the rest is Al;

[0063] (2) Mold heating: heat the mold to 520°C in a heating furnace and keep it warm for 12 hours;

[0064] (3) Extrusion cylinder heating: heat the extrusion cylinder, and control the temperature of the extrusion cylinder at 395°C;

[0065] (4) Ingot heating: Heating the ingot with a length of 1800mm, adopting the gradient heating method, the temperature difference between the head and the tail is 50°C, and the heating temperature of the ingot in the ...

technical field

[0001] The invention relates to the technical field of preparation of alloy profiles, in particular to a method for preparing large-scale Al-Mg-Si-Mn alloy pipes for textile equipment. Background technique

[0002] Compared with other aluminum alloys, Al-Mg-Si-Mn alloy has moderate strength and excellent welding performance, and has been widely used in textile equipment and other fields. However, this alloy requires reasonable extrusion temperature and extrusion speed, high requirements for extrusion process control, high quenching sensitivity, and cannot meet the mechanical property requirements of the product through ordinary online quenching, resulting in the performance of the textile round tube during high-speed rotation. Unstable, industrial production products can only be produced through offline quenching. At the same time, the offline quenching pipe is seriously deformed and the pipe precision is poor. The ovality can only be improved through subsequ...

Examples

Embodiment 1

[0031] A kind of preparation method of large-scale Al-Mg-Si-Mn alloy pipe material for textile equipment, such as figure 1 shown, including the following steps:

[0032] (1) Casting ingots, the cast alloy is large-scale Al-Mg-Si-Mn alloy ingots, the outer diameter of the round tube of large-scale Al-Mg-Si-Mn alloy ingots is Ø400mm, and the wall thickness is 15mm; The composition and weight percentage of Al-Mg-Si-Mn alloy ingot are: Mg is 0.98%, Si is 0.95%, Mn is 0.46%, Fe is 0.15%, Cr is 0.05%, Zn is 0.03%, Cu is 0.03%, Ti is 0.03%, V is 0.02, and the rest is Al;

[0033] (2) Mold heating: heat the mold to 490°C in a heating furnace and keep it warm for 12 hours;

[0034] (3) Extrusion cylinder heating: heat the extrusion cylinder, and control the temperature of the extrusion cylinder at 390°C;

[0035] (4) Ingot heating: Heating the ingot with a length of 1800mm, adopting the gradient heating method, the temperature difference between the head and the tail is 20°C, and th...

Embodiment 2

[0046] A method for preparing large-scale Al-Mg-Si-Mn alloy pipes for textile equipment, comprising the following steps:

[0047] (1) Casting ingots, the cast alloy is large-scale Al-Mg-Si-Mn alloy ingots, the outer diameter of the round tube of large-scale Al-Mg-Si-Mn alloy ingots is Ø300mm, and the wall thickness is 8mm; The composition and weight percentage of Al-Mg-Si-Mn alloy ingot are: Mg is 0.7%, Si is 0.8%, Mn is 0.4%, Fe is 0.15%, Cr is 0.05%, Zn is 0.03%, Cu is 0.03%, Ti is 0.03%, V is 0.02, and the rest is Al;

[0048] (2) Mold heating: heat the mold to 465°C in a heating furnace and keep it warm for 12 hours;

[0049] (3) Extrusion cylinder heating: heat the extrusion cylinder, and control the temperature of the extrusion cylinder at 300°C;

[0050](4) Ingot heating: Heating the ingot with a length of 600mm, adopting the gradient heating method, the temperature difference between the head and the tail is 6°C, and the heating temperature of the ingot in the heatin...

Embodiment 3

[0061] A method for preparing large-scale Al-Mg-Si-Mn alloy pipes for textile equipment, comprising the following steps:

[0062] (1) Casting ingots, the alloys cast are large-scale Al-Mg-Si-Mn alloy ingots, the outer diameter of the round tube of large-scale Al-Mg-Si-Mn alloy ingots is Ø500mm, and the wall thickness is 30mm; The composition and weight percentage of Al-Mg-Si-Mn alloy ingot are: Mg is 1.1%, Si is 1.2%, Mn is 0.5%, Fe is 0.15%, Cr is 0.05%, Zn is 0.03%, Cu is 0.03%, Ti is 0.03%, V is 0.02, and the rest is Al;

[0063] (2) Mold heating: heat the mold to 520°C in a heating furnace and keep it warm for 12 hours;

[0064] (3) Extrusion cylinder heating: heat the extrusion cylinder, and control the temperature of the extrusion cylinder at 395°C;

[0065] (4) Ingot heating: Heating the ingot with a length of 1800mm, adopting the gradient heating method, the temperature difference between the head and the tail is 50°C, and the heating temperature of the ingot in the ...

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