阅读说明：本技术 一种用于制作折叠屏手机背光板的金属带的制备方法 (Preparation method of metal belt for manufacturing backlight plate of folding screen mobile phone ) 是由 姜春静 于 2021-08-12 设计创作，主要内容包括：本发明公开了一种用于制作折叠屏手机背光板的金属带的制备方法,包括以下步骤：S1、一次轧制；S2、一次固溶退火；S3、二次轧制；S4、二次固溶退火；S5、三次轧制；采用20辊轧机,经过7道次的轧制,将0.086mm半成品钢带轧制成厚度为0.03mm的成品钢带；S6、成品清洗；S7、成品拉矫；S8、成品分切。本发明将0.5mm的钢带依次经过一次轧制、一次固溶处理、二次轧制、二次固溶处理、三次轧制、成品清洗、成品拉矫和成品分切处理,其中三次轧制步骤中采用了喷砂表面工作辊小压下多道量轧制和成品拉矫使用大倾斜小延伸矫平工艺,制得的不锈钢钢带为0.03mm超薄超平不锈钢带。(The invention discloses a preparation method of a metal belt for manufacturing a backlight plate of a folding screen mobile phone, which comprises the following steps: s1, primary rolling; s2, primary solution annealing; s3, secondary rolling; s4, secondary solution annealing; s5, rolling for the third time; rolling the semi-finished steel strip with the thickness of 0.086mm into a finished steel strip with the thickness of 0.03mm by adopting a 20-roller mill for 7 times of rolling; s6, cleaning a finished product; s7, straightening and withdrawing finished products; and S8, cutting the finished product. The method comprises the steps of sequentially carrying out primary rolling, primary solution treatment, secondary rolling, secondary solution treatment, tertiary rolling, finished product cleaning, finished product straightening and withdrawal and cutting treatment on a0.5 mm steel band, wherein a sand blasting surface working roll is adopted in the tertiary rolling step, a plurality of passes of rolling are carried out under a small pressure, a large-inclination small-extension straightening process is used for the finished product straightening and withdrawal, and the manufactured stainless steel band is a 0.03mm ultrathin ultra-flat stainless steel band.)

1. A preparation method of a metal belt for manufacturing a backlight plate of a folding screen mobile phone is characterized by comprising the following steps:

s1, primary rolling;

rolling the 0.225mm semi-finished steel strip into a semi-finished steel strip with the thickness of 0.17mm by adopting a 20-roll mill for 6-7 passes, and selecting a Ra0.5-0.7 um coarse grinding roll as a working roll for rolling;

s2, primary solution annealing;

the method comprises the following steps of (1) enabling a 0.17mm semi-finished steel strip after primary rolling to pass through a degreasing and cleaning section of a continuous annealing line, removing grease remained on the surface of the semi-finished steel strip during rolling, drying the semi-finished steel strip, and enabling the semi-finished steel strip to enter a full-hydrogen-protection bright annealing furnace, wherein the dew point is-45 to-55 ℃, the annealing speed is 22m/min, the annealing temperature is 1100 to 1130 ℃, and the surface of the steel strip is determined not to be oxidized and blued in the treatment process;

s3, secondary rolling;

rolling the 0.17mm semi-finished steel strip into a semi-finished steel strip with the thickness of 0.086mm by adopting a 20-roll mill for 7-8 times, wherein a sand blasting roll with Ra0.2-0.4um is selected as a working roll for rolling;

s4, secondary solution annealing;

enabling the semi-finished steel belt of 0.086mm after secondary rolling to pass through a degreasing and cleaning section of a continuous annealing line, removing grease remained on the surface of the semi-finished steel belt during rolling, drying and entering a bright annealing furnace protected by total hydrogen, wherein the dew point is below-70 ℃, the annealing speed is 28-30 m/min, and the annealing temperature is 900-950 ℃;

s5, rolling for the third time;

rolling a 0.086mm semi-finished steel strip into a finished steel strip with the thickness of 0.03mm by adopting a 20-roll mill for 7 passes of rolling, and sequentially selecting sand blasting rollers of Ra0.5-0.6 um, Ra0.3-0.4 um, Ra0.2-0.3 um, Ra0.1-0.15 um and Ra0.04-0.05 um as working rollers for rolling;

s6, cleaning a finished product;

enabling the finished steel strip with the thickness of 0.03mm after the third rolling to pass through a degreasing cleaning unit at the speed of 10-15 m/min, and removing grease remained on the surface of the finished steel strip during rolling;

s7, straightening and withdrawing finished products;

and S8, cutting the finished product.

2. The method for preparing the metal strip used for manufacturing the backlight plate of the folding screen mobile phone according to claim 1, wherein in the step S7, a twenty-three-roller tension leveler is used for carrying out plate shape correction on a finished steel strip after a finished product is cleaned, a control groove shape with a large inclination of 2.0-2.2 mm and a small elongation of 0.1-0.2% is adopted in the tension leveler process, and the head is continuously tension-corrected after the plate shape is determined to be qualified on an outlet platform, so that the flatness of the steel strip is controlled to be 0.1-0.15 mm, and the surface roughness is Ra0.9-1.5 um.

3. The method for manufacturing a metal strip used for manufacturing a backlight board of a folding screen mobile phone according to claim 1, wherein in step S8, a slitting machine group is used to perform width row knife slitting on the finished product after being pulled and corrected.

Technical Field

The invention belongs to the technical field of stainless steel processing, and particularly relates to a preparation method of a metal belt for manufacturing a backlight plate of a folding screen mobile phone.

Background

The backlight plate is used for changing the picture on the front of the display screen, and is used for manufacturing the Liquid Crystal Display (LCD). The LCD panel of the LCD does not emit light, but only transmits light, so a high-brightness light emitter is added to the back, which is a backlight plate, in fact, a fluorescent lamp is added with a reflector.

The folding screen mobile phone is one kind of smart phone, and the technical requirement on the backlight plate of the folding screen mobile phone in the prior art is higher, but the technology of the folding screen mobile phone is still immature.

Therefore, a method for manufacturing a metal strip for manufacturing a backlight plate of a folding screen mobile phone is needed.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a method for preparing a metal belt for manufacturing a backlight plate of a folding screen mobile phone.

In order to solve the technical problems, the invention provides the following technical scheme:

the invention provides a preparation method of a metal belt for manufacturing a backlight plate of a folding screen mobile phone, which comprises the following steps:

s1, primary rolling;

rolling the 0.225mm semi-finished steel strip into a semi-finished steel strip with the thickness of 0.17mm by adopting a 20-roll mill for 6-7 passes, and selecting a Ra0.5-0.7 um coarse grinding roll as a working roll for rolling;

s2, primary solution annealing;

the method comprises the following steps of (1) enabling a 0.17mm semi-finished steel strip after primary rolling to pass through a degreasing and cleaning section of a continuous annealing line, removing grease remained on the surface of the semi-finished steel strip during rolling, drying the semi-finished steel strip, and enabling the semi-finished steel strip to enter a full-hydrogen-protection bright annealing furnace, wherein the dew point is-45 to-55 ℃, the annealing speed is 22m/min, the annealing temperature is 1100 to 1130 ℃, and the surface of the steel strip is determined not to be oxidized and blued in the treatment process;

s3, secondary rolling;

rolling the 0.17mm semi-finished steel strip into a semi-finished steel strip with the thickness of 0.086mm by adopting a 20-roll mill for 7-8 times, wherein a sand blasting roll with Ra0.2-0.4um is selected as a working roll for rolling;

s4, secondary solution annealing;

enabling the semi-finished steel belt of 0.086mm after secondary rolling to pass through a degreasing and cleaning section of a continuous annealing line, removing grease remained on the surface of the semi-finished steel belt during rolling, drying and entering a bright annealing furnace protected by total hydrogen, wherein the dew point is below-70 ℃, the annealing speed is 28-30 m/min, and the annealing temperature is 900-950 ℃;

s5, rolling for the third time;

rolling a 0.086mm semi-finished steel strip into a 0.03mm thick semi-finished steel strip by adopting a 20-roll mill for 7 passes of rolling, wherein sand blasting rollers of Ra0.5-0.6 um, Ra0.3-0.4 um, Ra0.2-0.3 um, Ra0.1-0.15 um and Ra0.04-0.05 um are sequentially selected as working rollers for rolling;

s6, cleaning a finished product;

enabling the finished steel strip with the thickness of 0.03mm after the third rolling to pass through a degreasing cleaning unit at the speed of 10-15 m/min, and removing grease remained on the surface of the finished steel strip during rolling;

s7, straightening and withdrawing finished products;

and S8, cutting the finished product.

As a preferred technical scheme, a twenty-three-roller withdrawal and straightening machine is adopted in the step S7 to carry out plate shape straightening on a finished steel strip product after a finished product is cleaned, a control groove shape with a large inclination of 2.0-2.2 mm and a small elongation of 0.1-0.2% is adopted in the withdrawal and straightening process, and the head is continuously withdrawn and straightened after the plate shape is determined to be qualified on an outlet platform, so that the flatness of the steel strip is controlled to be 0.1-0.15 mm, and the surface roughness is Ra0.9-1.5 mu m.

As a preferred technical solution of the present invention, in step S8, a slitting unit is used to slit the finished product after being pulled and straightened by width row knives.

Compared with the prior art, the invention has the following beneficial effects:

the method comprises the steps of sequentially carrying out primary rolling, primary solution treatment, secondary rolling, secondary solution treatment, tertiary rolling, finished product cleaning, finished product straightening and withdrawal and cutting treatment on a0.5 mm steel band, wherein a sand blasting surface working roll is adopted in the tertiary rolling step, a plurality of passes of rolling are carried out under a small pressure, a large-inclination small-extension straightening process is used for the finished product straightening and withdrawal, and the manufactured stainless steel band is a 0.03mm ultrathin ultra-flat stainless steel band.

Detailed Description

The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is in no way intended to limit the invention.

Example 1

In order to achieve the purpose of the invention, in one embodiment of the invention, a method for preparing a metal strip for manufacturing a backlight plate of a folding screen mobile phone is provided, which comprises the following steps:

s1, primary rolling;

rolling the 0.225mm semi-finished steel strip into a semi-finished steel strip with the thickness of 0.17mm by adopting a 20-roll mill for 6-7 passes, and selecting a Ra0.5-0.7 um coarse grinding roll as a working roll for rolling;

s2, primary solution annealing;

the method comprises the following steps of (1) enabling a 0.17mm semi-finished steel strip after primary rolling to pass through a degreasing and cleaning section of a continuous annealing line, removing grease remained on the surface of the semi-finished steel strip during rolling, drying the semi-finished steel strip, and enabling the semi-finished steel strip to enter a full-hydrogen-protection bright annealing furnace, wherein the dew point is-45 to-55 ℃, the annealing speed is 22m/min, the annealing temperature is 1100 to 1130 ℃, and the surface of the steel strip is determined not to be oxidized and blued in the treatment process;

s3, secondary rolling;

rolling the 0.17mm semi-finished steel strip into a semi-finished steel strip with the thickness of 0.086mm by adopting a 20-roll mill for 7-8 times, wherein a sand blasting roll with Ra0.2-0.4um is selected as a working roll for rolling;

s4, secondary solution annealing;

enabling the semi-finished steel belt of 0.086mm after secondary rolling to pass through a degreasing and cleaning section of a continuous annealing line, removing grease remained on the surface of the semi-finished steel belt during rolling, drying and entering a bright annealing furnace protected by total hydrogen, wherein the dew point is below-70 ℃, the annealing speed is 28-30 m/min, and the annealing temperature is 900-950 ℃;

s5, rolling for the third time;

rolling a 0.086mm semi-finished steel strip into a 0.03mm thick semi-finished steel strip by adopting a 20-roll mill for 7 passes of rolling, wherein sand blasting rollers of Ra0.5-0.6 um, Ra0.3-0.4 um, Ra0.2-0.3 um, Ra0.1-0.15 um and Ra0.04-0.05 um are sequentially selected as working rollers for rolling; the method comprises the following specific steps:

s6, cleaning a finished product;

enabling the finished steel strip with the thickness of 0.03mm after the third rolling to pass through a degreasing cleaning unit at the speed of 10-15 m/min, and removing grease remained on the surface of the finished steel strip during rolling;

s7, straightening and withdrawing finished products;

performing plate shape correction on a finished steel belt product after cleaning a finished product by adopting a twenty-three-roller withdrawal and straightening machine, adopting a control groove shape with a large inclination of 2.0-2.2 mm and a small elongation of 0.1-0.2% in the withdrawal and straightening process, continuously withdrawing and straightening the head after confirming that the plate shape is qualified on an outlet platform, and ensuring that the flatness of the steel belt is controlled to be 0.1-0.15 mm and the surface roughness is Ra0.9-1.5 mu m;

s8, cutting the finished product;

and (5) adopting a slitting machine to perform width row cutter slitting on the finished product after being pulled and straightened.

The final test performance is as follows:

the method comprises the steps of sequentially carrying out primary rolling, primary solution treatment, secondary rolling, secondary solution treatment, tertiary rolling, finished product cleaning, finished product straightening and withdrawal and cutting treatment on a0.5 mm steel band, wherein a sand blasting surface working roll is adopted in the tertiary rolling step, a plurality of passes of rolling are carried out under a small pressure, a large-inclination small-extension straightening process is used for the finished product straightening and withdrawal, and the manufactured stainless steel band is a 0.03mm ultrathin ultra-flat stainless steel band.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.