阅读说明：本技术 一种宽幅大卷径空调箔的退火方法 (Annealing method of wide-width large-roll-diameter air conditioner foil ) 是由 任行 孙守旭 张凯 张冉 尚蒙非 于 2021-08-11 设计创作，主要内容包括：本发明公开了一种宽幅大卷径空调箔的退火方法,本退火方法解决了宽幅大卷径空调箔整卷退火处理时,内外圈退火性能不均、不合格的技术问题,通过退火处理整卷宽幅大卷径空调箔,大大提高了宽幅大卷径空调箔的退火效率和产能,并且退火处理后的产品性能合格均匀,产品质量得到了保证。(The invention discloses an annealing method of a wide and large-roll-diameter air-conditioning foil, which solves the technical problems of non-uniform and unqualified inner and outer ring annealing performance during the whole-roll annealing treatment of the wide and large-roll-diameter air-conditioning foil.)

1. The annealing method of the wide-width large-roll-diameter air-conditioning foil is characterized by comprising the following steps of:

the method comprises the following steps: respectively inserting two groups of thermocouples into an inner ring and an outer ring of the wide-width large-roll-diameter air-conditioning foil, wherein the length of the wide-width large-roll-diameter air-conditioning foil is 1930mm, the roll diameter range of the wide-width large-roll-diameter air-conditioning foil is 2500 mm-2700 mm, the insertion depths of the two groups of thermocouples are both 30mm, and the two groups of thermocouples are used for detecting and feeding back temperature data of the inner ring and the outer ring of the wide-width large-roll-diameter air-conditioning foil in the annealing process;

step two: sending the wide-width large-coil-diameter air conditioning foil inserted with the two groups of thermocouples into an annealing furnace, wherein a circulating fan, a positive pressure fan and a negative pressure fan are arranged in the annealing furnace, the rotating speed of the circulating fan is 910r/min, the rotating speed of the positive pressure fan is 550r/min, and the rotating speed of the negative pressure fan is 550 r/min;

step three: heating the temperature in the annealing furnace to 290 ℃, opening a circulating fan and a positive pressure fan in the annealing furnace for cooling treatment, simultaneously opening a negative pressure fan to remove redundant oil stains on the surface of the wide and large-coil-diameter air-conditioning foil, and closing the negative pressure fan after time t 1;

step four: when the thermocouple positioned on the outer ring detects that the temperature of the metal on the outer ring of the wide-width large-winding-diameter air-conditioning foil reaches 264 ℃, the temperature in the annealing furnace is reduced to 267 ℃ to be the inner ring for continuous heating and annealing, a negative pressure fan is started to assist in cooling, and the negative pressure fan is turned off after time t 2;

step five: when the thermocouple positioned in the inner ring detects that the temperature of the metal in the inner ring of the wide-width large-roll-diameter air-conditioning foil reaches 264 ℃, controlling the temperature in the annealing furnace at 264 ℃, keeping the temperature for t3, turning on the negative pressure fan again to assist in cooling, and turning off the negative pressure fan after the time t 4;

step six: after time t3, the annealing operation of the wide and large roll diameter air-conditioned foil is finished, and the wide and large roll diameter air-conditioned foil is taken out of the annealing furnace.

2. The annealing method of air-conditioning foil with large roll diameter according to claim 1, wherein the distance between the thermocouple inserted into the inner ring in the step one and the sleeve of the air-conditioning foil with large roll diameter is 30 mm.

3. The annealing method of air-conditioning foil with large width and large roll diameter as claimed in claim 1, wherein the distance between the thermocouple inserted into the outer ring in the step one and the outermost aluminum foil of the air-conditioning foil with large width and large roll diameter is 30-50 mm.

4. The method for annealing air-conditioning foil with wide and large roll diameter as claimed in claim 1, wherein the time t1 in step three is 6 h.

5. The method for annealing air-conditioning foil with wide and large roll diameter as claimed in claim 1, wherein the time t2 in the fourth step is 1 h.

6. The method for annealing wide and large-diameter air-conditioning foil according to claim 1, wherein the time t3 in the step five is 20 h.

7. The method for annealing air-conditioning foil with wide and large roll diameter according to claim 1, wherein the time t4 in the step five is 20 min.

Technical Field

The invention belongs to the technical field of annealing processes, and particularly relates to an annealing method of a wide-width large-roll-diameter air conditioner foil.

Background

With the gradual improvement of various technologies in the traditional aluminum processing casting-rolling, plate strip and foil industries, the production technology levels of various aluminum casting-rolling, aluminum plate strip and aluminum foil enterprises are gradually consistent, how to break through the bottleneck and create a new profit growth point for the enterprises becomes a consensus of all aluminum processing enterprises, and under the background, the production mode of optimizing the wide and large-roll-diameter air conditioning foil is undoubtedly the best choice for the enterprises. The conventional annealing process of the wide and large-roll-diameter air-conditioning foil generally comprises the steps of cutting the wide and large-roll-diameter air-conditioning foil and then annealing, so that a large amount of production time is wasted in the cutting process by the annealing mode, the production cost is increased, the production efficiency is reduced, the annealing process of directly rolling the wide and large-roll-diameter air-conditioning foil without cutting the wide and large-roll-diameter air-conditioning foil into whole rolls can cause uneven annealing performance of the inner ring and the outer ring of the wide and large-roll-diameter air-conditioning foil, and even the annealing quality is directly scrapped due to unqualified annealing performance, so that the annealing quality is seriously influenced.

Disclosure of Invention

The invention provides an annealing method of wide and large-roll-diameter air-conditioning foil, aiming at solving the defects of the prior art.

The annealing method of the wide-width large-roll-diameter air conditioning foil comprises the following steps of:

the method comprises the following steps: respectively inserting two groups of thermocouples into an inner ring and an outer ring of the wide-width large-roll-diameter air-conditioning foil, wherein the length of the wide-width large-roll-diameter air-conditioning foil is 1930mm, the roll diameter range of the wide-width large-roll-diameter air-conditioning foil is 2500 mm-2700 mm, the insertion depths of the two groups of thermocouples are both 30mm, and the two groups of thermocouples are used for detecting and feeding back temperature data of the inner ring and the outer ring of the wide-width large-roll-diameter air-conditioning foil in the annealing process;

step two: sending the wide-width large-coil-diameter air conditioning foil inserted with the two groups of thermocouples into an annealing furnace, wherein a circulating fan, a positive pressure fan and a negative pressure fan are arranged in the annealing furnace, the rotating speed of the circulating fan is 910r/min, the rotating speed of the positive pressure fan is 550r/min, and the rotating speed of the negative pressure fan is 550 r/min;

step three: heating the temperature in the annealing furnace to 290 ℃, opening a circulating fan and a positive pressure fan in the annealing furnace for cooling treatment, simultaneously opening a negative pressure fan to remove redundant oil stains on the surface of the wide and large-coil-diameter air-conditioning foil, and closing the negative pressure fan after time t 1;

step four: when the thermocouple positioned on the outer ring detects that the temperature of the metal on the outer ring of the wide-width large-winding-diameter air-conditioning foil reaches 264 ℃, the temperature in the annealing furnace is reduced to 267 ℃ to be the inner ring for continuous heating and annealing, a negative pressure fan is started to assist in cooling, and the negative pressure fan is turned off after time t 2;

step five: when the thermocouple positioned in the inner ring detects that the temperature of the metal in the inner ring of the wide-width large-roll-diameter air-conditioning foil reaches 264 ℃, controlling the temperature in the annealing furnace at 264 ℃, keeping the temperature for t3, turning on the negative pressure fan again to assist in cooling, and turning off the negative pressure fan after the time t 4;

step six: after time t3, the annealing operation of the wide and large roll diameter air-conditioned foil is finished, and the wide and large roll diameter air-conditioned foil is taken out of the annealing furnace.

Furthermore, the distance between the thermocouple inserted into the inner ring in the step one and the sleeve of the wide-width large-roll-diameter air conditioning foil is 30 mm.

Furthermore, the distance between the thermocouple inserted into the outer ring in the step one and the outermost aluminum foil of the wide and large-roll-diameter air-conditioning foil is 30-50 mm.

Further, time t1 in step three is 6 h.

Further, time t2 in step four is 1 h.

Further, time t3 in step five is 20 h.

Further, time t4 in step five is 20 min.

Has the advantages that: the invention discloses an annealing method of a wide and large-roll-diameter air-conditioning foil, which solves the technical problems of non-uniform and unqualified inner and outer ring annealing performance during the whole-roll annealing treatment of the wide and large-roll-diameter air-conditioning foil.

Drawings

FIG. 1 is a temperature profile during annealing of a wide, large roll diameter air conditioning foil;

Detailed Description

For the purpose of enhancing the understanding of the present invention, the present invention will be described in further detail with reference to the following examples and the accompanying drawings, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.

The annealing method of the wide-width large-roll-diameter air conditioning foil comprises the following steps of:

the method comprises the following steps: respectively inserting two groups of thermocouples into an inner ring and an outer ring of the wide-width large-roll-diameter air-conditioning foil, wherein the length of the wide-width large-roll-diameter air-conditioning foil is 1930mm, the roll diameter range of the wide-width large-roll-diameter air-conditioning foil is 2500 mm-2700 mm, the insertion depths of the two groups of thermocouples are both 30mm, and the two groups of thermocouples are used for detecting and feeding back temperature data of the inner ring and the outer ring of the wide-width large-roll-diameter air-conditioning foil in the annealing process;

step two: sending the wide-width large-coil-diameter air conditioning foil inserted with the two groups of thermocouples into an annealing furnace, wherein a circulating fan, a positive pressure fan and a negative pressure fan are arranged in the annealing furnace, the rotating speed of the circulating fan is 910r/min, the rotating speed of the positive pressure fan is 550r/min, and the rotating speed of the negative pressure fan is 550 r/min;

step three: heating the temperature in the annealing furnace to 290 ℃, opening a circulating fan and a positive pressure fan in the annealing furnace for cooling treatment, simultaneously opening a negative pressure fan to remove redundant oil stains on the surface of the wide and large-coil-diameter air-conditioning foil, and closing the negative pressure fan after time t 1;

step four: when the thermocouple positioned on the outer ring detects that the temperature of the metal on the outer ring of the wide-width large-winding-diameter air-conditioning foil reaches 264 ℃, the temperature in the annealing furnace is reduced to 267 ℃ to be the inner ring for continuous heating and annealing, a negative pressure fan is started to assist in cooling, and the negative pressure fan is turned off after time t 2;

step five: when the thermocouple positioned in the inner ring detects that the temperature of the metal in the inner ring of the wide-width large-roll-diameter air-conditioning foil reaches 264 ℃, controlling the temperature in the annealing furnace at 264 ℃, keeping the temperature for t3, turning on the negative pressure fan again to assist in cooling, and turning off the negative pressure fan after the time t 4;

step six: after time t3, the annealing operation of the wide and large roll diameter air-conditioned foil is finished, and the wide and large roll diameter air-conditioned foil is taken out of the annealing furnace.

In this embodiment, the distance between the thermocouple inserted into the inner ring in the first step and the sleeve of the wide-width large-roll-diameter air conditioning foil is 30 mm.

In this embodiment, the distance between the thermocouple inserted into the outer ring in the first step and the outermost aluminum foil of the wide large-roll-diameter air conditioning foil is 30-50 mm.

In this embodiment, the time t1 in step three is 6 h.

In the present embodiment, the time t2 in step four is 1 h.

In the present embodiment, the time t3 in step five is 20 h.

In the present embodiment, the time t4 in step five is 20min

As shown in FIG. 1, curve A in the graph is a curve of temperature change in the annealing furnace with time, curve B is a curve of temperature change of the outer ring of the wide and large-roll-diameter air-conditioning foil with time, and curve C is a curve of temperature change of the inner ring of the wide and large-roll-diameter air-conditioning foil with time. The performance test results of the wide-width large-roll-diameter air-conditioning foil obtained by the annealing method are shown in the following table 1.

TABLE 1 table of the performance test results of the wide and large-roll-diameter air-conditioning foil

The annealing method solves the technical problems that the annealing performance of the inner ring and the outer ring is uneven and unqualified when the whole wide and large-roll-diameter air-conditioning foil is subjected to whole-roll annealing treatment, the annealing efficiency and the productivity of the whole wide and large-roll-diameter air-conditioning foil are greatly improved through the annealing treatment, the performance of the annealed product is qualified and uniform, and the product quality is ensured.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.