阅读说明：本技术 一种超薄宽幅紫铜带的单机架可逆轧制工艺 (Single-stand reversible rolling process for ultrathin wide copper strip ) 是由 杨扬 于 2021-05-30 设计创作，主要内容包括：本发明公开了一种超薄宽幅紫铜带的单机架可逆轧制工艺,具体涉及紫铜带可逆轧制技术领域,其技术方案是：包括具体步骤如下：S1,将紫铜原料放入到中频炉中进行熔炼,直至达到液体状态；S2,通过连铸机将得到的熔炼液体,形成一定的断面形状和一定的尺寸规格铸坯,并通过水进行冷却,直至铸坯降至20℃-30℃；S3,将铸坯放入到锻压机中进行锻压,得到紫铜板料；S4,将紫铜板料放入到水中,并对紫铜板料进行清洗,本发明的有益效果是：通过轧机对紫铜板料进行四次轧制,然后再通过可逆式轧机对紫铜带进行可逆轧制,这样不仅会降低紫铜带的厚度,还会提高紫铜带的使用范围,以及会提高紫铜带的抗拉强度和光滑度。(The invention discloses a single-stand reversible rolling process of an ultrathin wide copper strip, and particularly relates to the technical field of reversible rolling of the copper strip, wherein the technical scheme is as follows: the method comprises the following specific steps: s1, putting the red copper raw material into an intermediate frequency furnace for smelting until the red copper raw material reaches a liquid state; s2, forming a casting blank with a certain section shape and a certain size specification by the obtained smelting liquid through a continuous casting machine, and cooling the casting blank by water until the casting blank is cooled to 20-30 ℃; s3, placing the casting blank into a forging press for forging and pressing to obtain a red copper plate; s4, putting the red copper plate into water, and cleaning the red copper plate, the invention has the advantages that: the red copper plate is rolled for four times by the rolling mill, and then the red copper strip is reversibly rolled by the reversible rolling mill, so that the thickness of the red copper strip can be reduced, the application range of the red copper strip can be enlarged, and the tensile strength and the smoothness of the red copper strip can be improved.)

1. A single-stand reversible rolling process of an ultrathin wide copper strip is characterized by comprising the following steps: the method comprises the following specific steps:

s1, putting the red copper raw material into an intermediate frequency furnace for smelting until the red copper raw material reaches a liquid state;

s2, forming a casting blank with a certain section shape and a certain size specification by the obtained smelting liquid through a continuous casting machine, and cooling the casting blank by water until the casting blank is cooled to 20-30 ℃;

s3, placing the casting blank into a forging press for forging and pressing to obtain a red copper plate;

s4, putting the red copper plate into water, cleaning the red copper plate, and drying the red copper plate by a drying device after cleaning;

s5, placing the red copper plate into a vacuum annealing furnace for annealing, wherein the annealing temperature is 510-580 ℃;

s6, placing the red copper plate into a rolling mill for rolling for four times:

for the first time: roughly rolling until a 3.5mm-3.8mm copper strip is obtained, wherein the unit tension of an inlet is 3.0-3.8 kg/mm2, the unit tension of an outlet is 6.0-7.0 kg/mm2, the rolling force is 30-32 t, the rolling speed is 270-280 m/min, the roll bending force is 5.5-7.5 t, and the tilting force is 0.4-0.8 t;

and (3) for the second time: performing primary finish rolling until a 2.4-2.8mm copper strip is obtained, wherein the inlet unit tension is 6.0-7.0 kg/mm2, the outlet unit tension is 8.0-9.0 kg/mm2, the rolling force is 32-34 t, the rolling speed is 380-420 m/min, the roll bending force is 6.8-7.8 t, and the tilting force is 0.5-1.4 t;

and thirdly: performing secondary finish rolling until a 1.2-1.4mm copper strip is obtained, wherein the inlet unit tension is 14.0-16.0 kg/mm2, the outlet unit tension is 18.0-19.0 kg/mm2, the rolling force is 33-35 t, the rolling speed is 480-540 m/min, the roll bending force is 6.0-8.0 t, and the tilting force is 0.7-1.5 t;

fourth time: performing finish rolling for the third time until a copper strip with the thickness of 0.4-0.6mm is obtained, wherein the unit tension of an inlet is 18.5-19.5 kg/mm2, the unit tension of an outlet is 19.5-21.5 kg/mm2, the rolling force is 34-36 t, the rolling speed is 480-540 m/min, the roll bending force is 6.5-8.5 t, and the tilting force is 0.7-1.5 t;

s7, connecting one end of the copper strip obtained in the S6 to a coiling machine, and then installing the other end of the copper strip on the other group of coiling machines through a reversing mill;

s8, starting the coiling machine to make the copper strip generate tension;

s9, starting the reversible rolling mill to roll the copper strip, wherein the rolling speed of the reversible rolling mill is 460-520 m/min, and the roller of the reversible rolling mill runs at a negative roll gap until the whole roll of the copper strip is rolled;

s10, adjusting the rolling direction until the whole coil of the copper strip is rolled;

s11, S9 and S10 were repeated 4-6 times to obtain 0.05-0.07 mm copper strips.

2. The single stand reversible rolling process of ultra-thin wide copper strips according to claim 1, wherein: the smelting temperature in the S1 is 1150-1300 ℃.

3. The single stand reversible rolling process of ultra-thin wide copper strips according to claim 1, wherein: the thickness of the red copper plate in the S3 is 2cm-4 cm.

4. The single stand reversible rolling process of ultra-thin wide copper strips according to claim 1, wherein: the kinematic viscosity of the rolling oil for rolling in the S6 is 5.4-6.4 mm/S2.

5. The single stand reversible rolling process of ultra-thin wide copper strips according to claim 1, wherein: in the S6 rolling process, the rolling oil is divided into cold oil and hot oil according to temperature, the temperature of the cold oil is controlled to be 18-38 ℃, the temperature of the hot oil is controlled to be 65-95 ℃, and the injection pressure is 2-6 bar.

Technical Field

The invention relates to the field of reversible rolling of a copper strip, in particular to a single-stand reversible rolling process of an ultrathin wide copper strip.

Background

The copper strip has the advantages of high purity, fine structure, low oxygen content, no air holes, no sand holes, no looseness and excellent electric conductivity, the surface precision of the electroetched die is high, the electrode has no directionality through a heat treatment process, the electroetching copper strip is suitable for fine striking and fine striking, the electroetching copper strip has good electric conductivity, heat conductivity, corrosion resistance, weather resistance and the like, and the electroetching copper strip has good electric conductivity, heat conductivity, corrosion resistance and processability and can be welded and brazed.

The prior art has the following defects: the thickness of the copper strip rolled by the existing copper strip rolling process is large, so that the application range of the copper strip is reduced, the application performance of the copper strip in some fields is influenced, and although the copper strip with low thickness can be rolled by the existing rolling process in the market, most of the rolled copper strip is rough and has poor tensile effect.

Therefore, the invention is necessary to invent a single-stand reversible rolling process of the ultrathin wide copper strip.

Disclosure of Invention

Therefore, the invention provides a single-stand reversible rolling process of an ultrathin wide copper strip, which is characterized in that a copper plate is rolled for four times by a rolling mill to obtain the copper strip, and then the copper strip is reversibly rolled by the reversible rolling mill to obtain the ultrathin copper strip, so that the problems that most of the thickness of the copper strip rolled by the existing copper strip rolling process is thicker, most of the copper strip rolled by the existing rolling process is rougher, and the tensile effect is poorer are solved.

In order to achieve the above purpose, the invention provides the following technical scheme: a single-frame reversible rolling process of an ultrathin wide copper strip comprises the following specific steps:

s1, putting the red copper raw material into an intermediate frequency furnace for smelting until the red copper raw material reaches a liquid state;

s2, forming a casting blank with a certain section shape and a certain size specification by the obtained smelting liquid through a continuous casting machine, and cooling the casting blank by water until the casting blank is cooled to 20-30 ℃;

s3, placing the casting blank into a forging press for forging and pressing to obtain a red copper plate;

s4, putting the red copper plate into water, cleaning the red copper plate, and drying the red copper plate by a drying device after cleaning;

s5, placing the red copper plate into a vacuum annealing furnace for annealing, wherein the annealing temperature is 510-580 ℃;

s6, placing the red copper plate into a rolling mill for rolling for four times:

for the first time: roughly rolling until a 3.5mm-3.8mm copper strip is obtained, wherein the unit tension of an inlet is 3.0-3.8 kg/mm2, the unit tension of an outlet is 6.0-7.0 kg/mm2, the rolling force is 30-32 t, the rolling speed is 270-280 m/min, the roll bending force is 5.5-7.5 t, and the tilting force is 0.4-0.8 t;

and (3) for the second time: performing primary finish rolling until a 2.4-2.8mm copper strip is obtained, wherein the inlet unit tension is 6.0-7.0 kg/mm2, the outlet unit tension is 8.0-9.0 kg/mm2, the rolling force is 32-34 t, the rolling speed is 380-420 m/min, the roll bending force is 6.8-7.8 t, and the tilting force is 0.5-1.4 t;

and thirdly: performing secondary finish rolling until a 1.2-1.4mm copper strip is obtained, wherein the inlet unit tension is 14.0-16.0 kg/mm2, the outlet unit tension is 18.0-19.0 kg/mm2, the rolling force is 33-35 t, the rolling speed is 480-540 m/min, the roll bending force is 6.0-8.0 t, and the tilting force is 0.7-1.5 t;

fourth time: performing finish rolling for the third time until a copper strip with the thickness of 0.4-0.6mm is obtained, wherein the unit tension of an inlet is 18.5-19.5 kg/mm2, the unit tension of an outlet is 19.5-21.5 kg/mm2, the rolling force is 34-36 t, the rolling speed is 480-540 m/min, the roll bending force is 6.5-8.5 t, and the tilting force is 0.7-1.5 t;

s7, connecting one end of the copper strip obtained in the S6 to a coiling machine, and then installing the other end of the copper strip on the other group of coiling machines through a reversing mill;

s8, starting the coiling machine to make the copper strip generate tension;

s9, starting the reversible rolling mill to roll the copper strip, wherein the rolling speed of the reversible rolling mill is 460-520 m/min, and the roller of the reversible rolling mill runs at a negative roll gap until the whole roll of the copper strip is rolled;

s10, adjusting the rolling direction until the whole coil of the copper strip is rolled;

s11, S9 and S10 were repeated 4-6 times to obtain 0.05-0.07 mm copper strips.

Preferably, the smelting temperature in the S1 is 1150-1300 ℃.

Preferably, the thickness of the red copper plate in the S3 is 2cm-4 cm.

Preferably, the kinematic viscosity of the rolling oil for rolling in S6 is 5.4-6.4 mm/S2.

Preferably, the rolling oil used in the rolling process in the S6 is divided into cold oil and hot oil according to temperature, the temperature of the cold oil is controlled to be 18-38 ℃, the temperature of the hot oil is controlled to be 65-95 ℃, and the injection pressure is 2-6 bar.

The invention has the beneficial effects that:

the red copper plate is rolled for four times by the rolling mill, and then the red copper strip is reversibly rolled by the reversible rolling mill, so that the thickness of the red copper strip can be reduced, the application range of the red copper strip can be enlarged, and the tensile strength and the smoothness of the red copper strip can be improved.

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:

the invention provides a single-stand reversible rolling process of an ultrathin wide copper strip, which comprises the following specific steps:

s1, putting the red copper raw material into an intermediate frequency furnace for smelting until the red copper raw material reaches a liquid state, wherein the smelting temperature is 1150 ℃;

s2, forming a casting blank with a certain section shape and a certain size specification by the obtained smelting liquid through a continuous casting machine, and cooling the casting blank through water until the casting blank is reduced to 20 ℃;

s3, placing the casting blank into a forging press for forging and pressing to obtain a red copper plate, wherein the thickness of the red copper plate is 2 cm;

s4, putting the red copper plate into water, cleaning the red copper plate, and drying the red copper plate by a drying device after cleaning;

s5, placing the red copper plate into a vacuum annealing furnace for annealing, wherein the annealing temperature is 510 ℃;

s6, placing the red copper plate into a rolling mill for rolling for four times:

for the first time: roughly rolling until a 3.5mm copper strip is obtained, wherein the inlet unit tension is 3.0kg/mm2, the outlet unit tension is 6.0kg/mm2, the rolling force is 30t, the rolling speed is 270m/min, the roll bending force is 5.5t, and the tilting force is 0.4 t;

and (3) for the second time: performing primary finish rolling until a 2.4mm copper strip is obtained, wherein the inlet unit tension is 6.0kg/mm2, the outlet unit tension is 8.0kg/mm2, the rolling force is 32t, the rolling speed is 380m/min, the roll bending force is 6.8t, and the tilting force is 0.5 t;

and thirdly: performing secondary finish rolling until a 1.2mm copper strip is obtained, wherein the inlet unit tension is 14.0kg/mm2, the outlet unit tension is 18.0kg/mm2, the rolling force is 33t, the rolling speed is 480m/min, the roll bending force is 6.0t, and the tilting force is 0.7 t;

fourth time: performing finish rolling for three times until a 0.4mm copper strip is obtained, wherein the inlet unit tension is 18.5kg/mm2, the outlet unit tension is 19.5kg/mm2, the rolling force is 34t, the rolling speed is 480m/min, the roll bending force is 6.5t, and the tilting force is 0.7 t;

wherein the kinematic viscosity of the rolling oil for rolling is 5.4mm/s2, and the rolling oil is divided into cold oil and hot oil according to the temperature in the rolling process, the temperature of the cold oil is controlled at 18 ℃, the temperature of the hot oil is controlled at 65 ℃, and the injection pressure is 2 bar;

s7, connecting one end of the copper strip obtained in the S6 to a coiling machine, and then installing the other end of the copper strip on the other group of coiling machines through a reversing mill;

s8, starting the coiling machine to make the copper strip generate tension;

s9, starting the reversing mill to roll the copper strip, wherein the roll speed of the reversing mill is 460m/min, and the roll of the reversing mill runs at a negative roll gap until the whole roll of the copper strip is rolled;

s10, adjusting the rolling direction until the whole coil of the copper strip is rolled;

s11, S9 and S10 were repeated 4 times to obtain 0.05mm copper ribbons.

Example 2:

the invention provides a single-stand reversible rolling process of an ultrathin wide copper strip, which comprises the following specific steps:

s1, putting the red copper raw material into an intermediate frequency furnace for smelting until the red copper raw material reaches a liquid state, wherein the smelting temperature is 1225 ℃;

s2, forming a casting blank with a certain section shape and a certain size specification by the obtained smelting liquid through a continuous casting machine, and cooling the casting blank by water until the casting blank is cooled to 25 ℃;

s3, placing the casting blank into a forging press for forging and pressing to obtain a red copper plate, wherein the thickness of the red copper plate is 3 cm;

s4, putting the red copper plate into water, cleaning the red copper plate, and drying the red copper plate by a drying device after cleaning;

s5, placing the red copper plate into a vacuum annealing furnace for annealing, wherein the annealing temperature is 545 ℃;

s6, placing the red copper plate into a rolling mill for rolling for four times:

for the first time: roughly rolling until a 3.65mm copper strip is obtained, wherein the inlet unit tension is 3.4kg/mm2, the outlet unit tension is 5.0kg/mm2, the rolling force is 31t, the rolling speed is 275m/min, the roll bending force is 6.5t, and the tilting force is 0.6 t;

and (3) for the second time: performing primary finish rolling until a 2.6mm copper strip is obtained, wherein the inlet unit tension is 6.5kg/mm2, the outlet unit tension is 8.5kg/mm2, the rolling force is 33t, the rolling speed is 400m/min, the roll bending force is 7.3t, and the tilting force is 0.95 t;

and thirdly: performing secondary finish rolling until a 1.3mm copper strip is obtained, wherein the inlet unit tension is 15.0kg/mm2, the outlet unit tension is 18.5kg/mm2, the rolling force is 34t, the rolling speed is 510m/min, the roll bending force is 7.0t, and the tilting force is 1.1 t;

fourth time: performing finish rolling for three times until a 0.5mm copper strip is obtained, wherein the inlet unit tension is 19kg/mm2, the outlet unit tension is 20.5kg/mm2, the rolling force is 35t, the rolling speed is 510m/min, the roll bending force is 7.5t, and the tilting force is 1.1 t;

wherein the kinematic viscosity of the rolling oil for rolling is 5.9mm/s2, and the rolling oil is divided into cold oil and hot oil according to the temperature in the rolling process, the temperature of the cold oil is controlled at 28 ℃, the temperature of the hot oil is controlled at 80 ℃, and the injection pressure is 4 bar;

s7, connecting one end of the copper strip obtained in the S6 to a coiling machine, and then installing the other end of the copper strip on the other group of coiling machines through a reversing mill;

s8, starting the coiling machine to make the copper strip generate tension;

s9, starting the reversing mill to roll the copper strip, wherein the roll speed of the reversing mill is 490m/min, and the roll of the reversing mill runs at a negative roll gap until the whole roll of the copper strip is rolled;

s10, adjusting the rolling direction until the whole coil of the copper strip is rolled;

s11, S9 and S10 were repeated 5 times, thereby obtaining 0.6mm copper ribbons.

Example 3:

the invention provides a single-stand reversible rolling process of an ultrathin wide copper strip, which comprises the following specific steps:

s1, putting the red copper raw material into an intermediate frequency furnace for smelting until the red copper raw material reaches a liquid state, wherein the smelting temperature is 1300 ℃;

s2, forming a casting blank with a certain section shape and a certain size specification by the obtained smelting liquid through a continuous casting machine, and cooling the casting blank by water until the casting blank is reduced to 30 ℃;

s3, placing the casting blank into a forging press for forging and pressing to obtain a red copper plate, wherein the thickness of the red copper plate is 4 cm;

s4, putting the red copper plate into water, cleaning the red copper plate, and drying the red copper plate by a drying device after cleaning;

s5, placing the red copper plate into a vacuum annealing furnace for annealing, wherein the annealing temperature is 580 ℃;

s6, placing the red copper plate into a rolling mill for rolling for four times:

for the first time: roughly rolling until a 3.8mm copper strip is obtained, wherein the inlet unit tension is 3.8kg/mm2, the outlet unit tension is 7.0kg/mm2, the rolling force is 32t, the rolling speed is 280m/min, the roll bending force is 7.5t, and the tilting force is 0.8 t;

and (3) for the second time: performing primary finish rolling until a 2.8mm copper strip is obtained, wherein the inlet unit tension is 7.0kg/mm2, the outlet unit tension is 9.0kg/mm2, the rolling force is 34t, the rolling speed is 420m/min, the roll bending force is 7.8t, and the tilting force is 1.4 t;

and thirdly: performing secondary finish rolling until a 1.4mm copper strip is obtained, wherein the inlet unit tension is 16.0kg/mm2, the outlet unit tension is 19.0kg/mm2, the rolling force is 35t, the rolling speed is 540m/min, the roll bending force is 8.0t, and the tilting force is 1.5 t;

fourth time: performing finish rolling for three times until a 0.6mm copper strip is obtained, wherein the inlet unit tension is 19.5kg/mm2, the outlet unit tension is 21.5kg/mm2, the rolling force is 36t, the rolling speed is 540m/min, the roll bending force is 8.5t, and the tilting force is 1.5 t;

wherein the kinematic viscosity of the rolling oil for rolling is 6.4mm/s2, and the rolling oil is divided into cold oil and hot oil according to the temperature in the rolling process, the temperature of the cold oil is controlled at 38 ℃, the temperature of the hot oil is controlled at 95 ℃, and the injection pressure is 6 bar;

s7, connecting one end of the copper strip obtained in the S6 to a coiling machine, and then installing the other end of the copper strip on the other group of coiling machines through a reversing mill;

s8, starting the coiling machine to make the copper strip generate tension;

s9, starting the reversing mill to roll the copper strip, wherein the roll speed of the reversing mill is 520m/min, and the roll of the reversing mill runs at a negative roll gap until the whole roll of the copper strip is rolled;

s10, adjusting the rolling direction until the whole coil of the copper strip is rolled;

s11, S9 and S10 were repeated 6 times, thereby obtaining 0.07mm copper ribbons.

The copper strips prepared in examples 1-3 above were compared to obtain the following data:

as can be seen from the above table, the copper strips prepared in examples 1 to 3 have better performance in thickness, tensile strength and smoothness, and after use, example 2 has the best effect, and has certain tensile strength and smoothness while reducing the thickness of the copper strips.

The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.