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Annealing process of aluminum alloy coiled material

An annealing process and aluminum alloy technology, which is applied in the field of annealing process of aluminum alloy coils, can solve problems such as the differences in structure and properties of finished coils at the head and tail, shorten annealing time, etc., achieve monitoring of annealing temperature, shorten annealing time, improve plasticity and The effect of toughness

Active Publication Date: 2014-10-08
YINBANG CLAD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the present invention provides an annealing process of aluminum alloy coils, which can greatly shorten the annealing time, solve the problem of the difference in the structure and performance of the finished material rolls existing in the existing aluminum alloy annealing process, and can effectively control the crystallization process. Increase the size of the grain, improve the plasticity and toughness of the finished coil

Method used

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  • Annealing process of aluminum alloy coiled material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Put 6 volumes of 1 series 1060, 0.25×1020×C aluminum alloy coils produced by casting and cold rolling according to the normal process into a 50-ton electric heating annealing furnace, and insert thermocouples on the outside and inside of the first coil near the furnace door;

[0017] The annealing process is set as follows: the annealing target temperature T of the aluminum alloy coil is 330°C, the ΔT is set to 90°C, and the Δt is set to 30°C. The alloy coil is heated up rapidly, and the temperature rise rate is controlled at 2.4°C / min. At the same time, the temperature of the outer high temperature point of the aluminum alloy coil is monitored. When the monitored outer high point temperature of the coil reaches 330°C-30°C, the annealing furnace The air temperature drops to 330°C, and the cooling time is 90 minutes. When the monitored inner low point temperature of the aluminum alloy coil reaches (330°C-10°C), keep warm for 60 minutes and air cool.

[0018] After anneal...

Embodiment 2

[0020] Put 4 rolls of 1 series 1060, 0.15×1000×C aluminum alloy coils produced by casting and cold rolling according to the normal process into a 25-ton electric heating annealing furnace, and insert thermocouples on the outside and inside of the first roll near the furnace door;

[0021] The annealing process is set as follows: the annealing target temperature T of the aluminum alloy coil is 390°C, the ΔT is set to 20°C, and the Δt is set to 15°C. The alloy coil is heated up rapidly, and the heating rate is controlled at 2.4°C / min. At the same time, the temperature of the externally measured high temperature point of the aluminum alloy coil is monitored. When the monitored high temperature on the outside of the coil reaches 390°C-15°C, the furnace The air temperature drops to 390°C, and the cooling time is 70 minutes. When the monitored low temperature of the inner side of the aluminum alloy coil reaches (390°C-25°C), heat preservation for 80 minutes and air cooling.

[0022]...

Embodiment 3

[0024] According to the above raw material ratio, 4 volumes of 3003, 0.25×1020×C aluminum-magnesium coils produced by casting and cold rolling according to the normal process are put into a 25-ton electric heating annealing furnace, and inserted on the outside and inside of the first volume near the furnace door. upper thermocouple;

[0025] The annealing process is set as follows: the annealing target temperature T of the aluminum alloy coil is 360°C, the ΔT is set to 110°C, and the Δt is set to 40°C. The aluminum alloy coil is heated up rapidly, and the temperature rise rate is controlled at 3 / min. At the same time, the temperature of the external high temperature point of the aluminum alloy coil is monitored. The air temperature drops to 360°C, and the cooling time is 75 minutes. When the monitored inner low point temperature of the aluminum alloy coil reaches (360°C-20°C), keep warm for 120 minutes and air cool.

[0026] After annealing, the finished state of aluminum an...

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Abstract

The invention provides an annealing process of an aluminum alloy coiled material. According to the annealing process provided by the invention, the annealing time is greatly shortened,the problem of poor finished material coil head-tail structure property difference generated when annealing treatment is carried out on an aluminum-magnesium alloy coiled material is solved by adopting an existing aluminum alloy annealing process, the size of a crystal grain can be effectively controlled and the plasticity and toughness of a finished product state coiled material are improved. The annealing process is characterized by comprising the following steps: placing the aluminum alloy coiled material into an annealing heating furnace; fast heating the aluminum alloy coiled material by setting the furnace gas temperature of the annealing heating furnace as T+delta T, and monitoring the temperature of the aluminum alloy coiled material; when the outer side temperature of the aluminum alloy coiled material, namely the high-point temperature of the aluminum alloy coiled material, reaches T-delta t, reducing the furnace gas temperature of the annealing heating furnace to T, wherein the temperature reduction time is 60-90 minutes; and when the inner side temperature of the aluminum alloy coiled material, namely the low-point temperature of the aluminum alloy coiled material, is monitored to reach T-(5-30 DEG C), preserving heat for 60-120 minutes, and then taking out of the furnace for air-cooling, wherein the temperature T is the predetermined target temperature of the annealing of the aluminum alloy material, the delta T is 20-150 DEG C, and the delta t is 10-70 DEG C.

Description

technical field [0001] The invention relates to the field of production technology of aluminum alloy materials, in particular to an annealing technology of aluminum alloy coils. Background technique [0002] The 5XXX series aluminum alloy, that is, aluminum-magnesium alloy, has a Mg content of 2.5%~3.8%. It has the characteristics of light weight, high strength, good corrosion resistance and weldability, and easy processing and forming. It is widely used in aerospace, transportation, Various fields such as IT industry and architectural decoration. With the development of related industries such as automobiles, ships, and aerospace, the demand for aluminum-magnesium alloy materials is increasing. Therefore, obtaining Al-Mg alloy coils with excellent microstructure and stable performance is the core issue in the research of this series of alloys. [0003] 5XXX series aluminum alloys, that is, aluminum-magnesium alloys, are deformable aluminum alloys that cannot be strengthen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/04
Inventor 陈伟凌亚标曹磊
Owner YINBANG CLAD MATERIAL
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