阅读说明：本技术 一种高表面粗糙度冷轧钛卷的制备方法 (preparation method of cold-rolled titanium coil with high surface roughness ) 是由 陈涛 李渤渤 周华 陈学伟 聂胜东 于 2019-08-23 设计创作，主要内容包括：一种高表面粗糙度冷轧钛卷的制备方法,先在冷轧机上通过冷轧工作辊对原料钛卷进行轧制,将原料钛卷轧制到目标厚度,并预留厚度余量,对轧制后的原料钛卷进行脱脂处理和罩式退火,得到毛化前钛卷；然后在冷轧机上通过激光毛化辊对毛化前钛卷进行毛化轧制,毛化轧制的单位张力控制为2.5kg/mm<Sup>2</Sup>~10.5kg/mm<Sup>2</Sup>,并在毛化轧制过程中添加乳化液,根据钛卷的屈服强度控制轧制力和乳化液流量,通过1~3道次的轧制将毛化前钛卷轧制到目标厚度,得到毛化后钛卷,采用的激光毛化辊为对冷轧工作辊进行激光无序毛化处理后获得的毛化轧辊；对毛化后钛卷进行脱脂处理,即获得表面粗糙度为1~3μm的冷轧钛卷,实现了在轧制钛卷时直接获得高表面粗糙度冷轧钛卷,能够满足实际生产要求。(A preparation method of a high-surface roughness cold-rolled titanium coil comprises the steps of firstly rolling a raw material titanium coil on a cold rolling mill through a cold-rolling working roll to a target thickness, reserving thickness allowance, and carrying out degreasing treatment and cover annealing on the rolled raw material titanium coil to obtain a titanium coil before texturing; then, the titanium coil before texturing is subjected to texturing rolling on a cold rolling mill through a laser texturing roller, and the unit tension of the texturing rolling is controlled to be 2.5kg/mm 2 ~10.5kg/mm 2 adding emulsion in the texturing rolling process, controlling the rolling force and the emulsion flow according to the yield strength of the titanium coil, rolling the titanium coil before texturing to the target thickness through 1 ~ 3 passes of rolling to obtain a textured titanium coil, adopting a laser texturing roller as the texturing roller obtained after performing laser disordered texturing on a cold rolling working roller, and feeding the textured titanium coil into a rolling milland (3) degreasing treatment is carried out, namely the cold ~ rolled titanium coil with the surface roughness of 1 ~ 3 mu m is obtained, so that the cold ~ rolled titanium coil with high surface roughness can be directly obtained when the titanium coil is rolled, and the actual production requirements can be met.)

1. A preparation method of a cold ~ rolled titanium coil with high surface roughness is used for producing the cold ~ rolled titanium coil with the thickness of 0.4 ~ 3.0mm and the surface roughness of 1 ~ 3 mu m, and is characterized by comprising the following steps:

step one, preparation before texturing of coiled material

rolling the raw material titanium coil on a cold rolling mill through a cold rolling working roll to a target thickness, reserving a thickness allowance of 0.005 ~ 0.03mm, and performing degreasing treatment and cover annealing on the rolled raw material titanium coil to obtain a titanium coil before texturing;

Step two, roughening rolling of coiled material

Performing texturing rolling on the titanium coil before texturing obtained in the step one through a laser texturing roller on a cold rolling mill, wherein the unit tension of the texturing rolling is controlled to be 2.5kg/mm²~10.5kg/ mm²adding emulsion in the texturing rolling process, and rolling the titanium coil before texturing to a target thickness through 1 ~ 3 passes of rolling to obtain a textured titanium coil;

the laser texturing roller is a texturing roller obtained after laser disordered texturing treatment is carried out on a cold rolling working roller, the surface roughness of the laser texturing roller is 8 ~ 15 mu m, and the roughness peak count Rpc value of the laser texturing roller is more than 60;

when the yield strength of the titanium coil before texturing is 140 ~ 300 MPa, controlling the rolling force to be 300 ~ 500 tons and controlling the flow rate of emulsion to be 900 ~ 1500L/min, when the yield strength of the titanium coil before texturing is 300 ~ 450 MPa, controlling the rolling force to be 500 ~ 800 tons and controlling the flow rate of emulsion to be 1500 ~ 2100L/min, when the yield strength of the titanium coil before texturing is 450 ~ 550 MPa, controlling the rolling force to be 800 ~ 1000 tons and controlling the flow rate of emulsion to be 2100 ~ 3000L/min;

Step three, degreasing the coiled material

and (3) degreasing the roughened titanium coil, and removing emulsion attached to the surface of the roughened titanium coil to obtain the cold ~ rolled titanium coil with the surface roughness of 1 ~ 3 microns.

2. the method for preparing the cold ~ rolled titanium coil with high surface roughness as claimed in claim 1, wherein in the step one, when the target thickness is 0.4 ~ 1.5mm, a thickness allowance of 0.005 ~ 0.01mm is reserved, and when the target thickness is 1.5 ~ 3.0mm, a thickness allowance of 0.01 ~ 0.03mm is reserved.

3. the method for preparing a high surface roughness cold rolled titanium coil as claimed in claim 1, wherein: and in the second step, the total time of pressing and grinding the roller by the laser texturing roller in the texturing rolling process is controlled not to exceed 3min, so that the attenuation of the roughness of the laser texturing roller is reduced.

4. The method for preparing a high surface roughness cold rolled titanium coil as claimed in claim 1, wherein: and in the second step, when the surface roughness abrasion of the laser texturing roller is attenuated, the rolling force is controlled to be increased, and the flow of the emulsion is controlled to be reduced.

Technical Field

The invention relates to the field of cold-rolled titanium coil preparation, in particular to a preparation method of a high-surface-roughness cold-rolled titanium coil.

background

The titanium metal has low elastic modulus and high work hardening degree, so that the titanium coil has strong resilience after rolling, and is difficult to cold roll, and the rolling force required during rolling is large, and the friction force between a roller and the surface of the titanium coil is also large. In order to reduce the rolling force and the friction force, a cold rolling working roll with low roughness is generally adopted for rolling, the surface roughness of the cold rolling working roll is generally less than or equal to 0.3 mu m, and the surface roughness of a rolled titanium coil is generally less than or equal to 0.6 mu m, however, in some special fields, such as certain polar plates for special batteries and certain stamping plates with high requirements on surface lubrication, a cold rolling titanium plate with high surface roughness and more than 1 mu m is required. At present, in order to obtain a cold-rolled titanium plate with high surface roughness, a titanium coil is generally cut into a single titanium plate, and then surface treatment means such as sand blasting or acid pickling are carried out, namely, in the prior art, the cold-rolled titanium plate with high surface roughness is difficult to directly obtain when the titanium coil is rolled, so that the surface treatment needs to be carried out on the titanium plate after the titanium coil is rolled to improve the surface roughness, the time consumption is long, the cost is high, the surface state of the titanium plate is easy to change, and the actual production requirements are difficult to meet.

Disclosure of Invention

the invention provides a preparation method of a high-surface-roughness cold-rolled titanium coil, aiming at solving the problem that the high-surface-roughness cold-rolled titanium coil is difficult to directly obtain when the titanium coil is rolled in the prior art.

the invention adopts the technical scheme that the preparation method of the cold ~ rolled titanium coil with high surface roughness is used for producing the cold ~ rolled titanium coil with the thickness of 0.4 ~ 3.0mm and the surface roughness of 1 ~ 3 mu m, and comprises the following steps:

Step one, preparation before texturing of coiled material

rolling the raw material titanium coil on a cold rolling mill through a cold rolling working roll to a target thickness, reserving a thickness allowance of 0.005 ~ 0.03mm, and performing degreasing treatment and cover annealing on the rolled raw material titanium coil to obtain a titanium coil before texturing;

step two, roughening rolling of coiled material

performing texturing rolling on the titanium coil before texturing obtained in the step one through a laser texturing roller on a cold rolling mill, wherein the unit tension of the texturing rolling is controlled to be 2.5kg/mm²~10.5kg/ mm²adding emulsion in the texturing rolling process, and rolling the titanium coil before texturing to a target thickness through 1 ~ 3 passes of rolling to obtain a textured titanium coil;

the laser texturing roller is a texturing roller obtained after laser disordered texturing treatment is carried out on a cold rolling working roller, the surface roughness of the laser texturing roller is 8 ~ 15 mu m, and the roughness peak count Rpc value of the laser texturing roller is more than 60;

when the yield strength of the titanium coil before texturing is 140 ~ 300 MPa, controlling the rolling force to be 300 ~ 500 tons and controlling the flow rate of emulsion to be 900 ~ 1500L/min, when the yield strength of the titanium coil before texturing is 300 ~ 450 MPa, controlling the rolling force to be 500 ~ 800 tons and controlling the flow rate of emulsion to be 1500 ~ 2100L/min, when the yield strength of the titanium coil before texturing is 450 ~ 550 MPa, controlling the rolling force to be 800 ~ 1000 tons and controlling the flow rate of emulsion to be 2100 ~ 3000L/min;

step three, degreasing the coiled material

and (3) degreasing the roughened titanium coil, and removing emulsion attached to the surface of the roughened titanium coil to obtain the cold ~ rolled titanium coil with the surface roughness of 1 ~ 3 microns.

preferably, in the step one, when the target thickness is 0.4 ~ 1.5mm, a thickness allowance of 0.005 ~ 0.01mm is reserved, and when the target thickness is 1.5 ~ 3.0mm, a thickness allowance of 0.01 ~ 0.03mm is reserved.

preferably, in the second step, the total time of pressing and grinding the laser texturing roller during the texturing rolling process is controlled not to exceed 3min, so that the attenuation of the roughness of the laser texturing roller is reduced.

preferably, in the second step, when the surface roughness abrasion of the laser texturing roller is attenuated, the rolling force is controlled to be increased, and the flow rate of the emulsion is controlled to be reduced.

According to the technical scheme, the invention has the beneficial effects that:

according to the preparation method of the high ~ surface ~ roughness cold ~ rolled titanium coil, the high ~ surface ~ roughness cold ~ rolled titanium coil with the roughness of 1 ~ 3mm can be obtained by performing laser disordered texturing on the cold ~ rolled working roll and combining rolling force, emulsion flow and reduction thickness control after annealing of the coiled material, so that the high ~ surface ~ roughness cold ~ rolled titanium coil can be directly obtained during rolling of the titanium coil, the surface roughness is improved without performing surface treatment on the titanium plate after the titanium coil is rolled, compared with the prior art, the high ~ surface ~ roughness titanium plate can be more conveniently obtained, the surface state of the titanium plate cannot be changed due to the fact that treatment methods such as sand blasting or acid pickling are not adopted, the production time consumption of the high ~ surface ~ roughness cold ~ rolled titanium coil and the titanium plate can be reduced, the cost is reduced, and the actual production requirements are met.

Detailed Description

A preparation method of a cold ~ rolled titanium coil with high surface roughness is used for producing the cold ~ rolled titanium coil with the thickness of 0.4 ~ 3.0mm and the surface roughness of 1 ~ 3 mu m, and comprises the following steps:

Step one, preparation before texturing of coiled material

rolling the raw material titanium coil on a cold rolling mill through a cold rolling working roll to a target thickness, reserving a thickness allowance of 0.005 ~ 0.03mm, performing degreasing treatment and cover annealing on the rolled raw material titanium coil to obtain a titanium coil before texturing, reserving a thickness allowance of 0.005 ~ 0.01mm when the target thickness is 0.4 ~ 1.5mm, and reserving a thickness allowance of 0.01 ~ 0.03mm when the target thickness is 1.5 ~ 3.0 mm.

step two, roughening rolling of coiled material

Performing texturing rolling on the titanium coil before texturing obtained in the step one through a laser texturing roller on a cold rolling mill, wherein the unit tension of the texturing rolling is controlled to be 2.5kg/mm²~10.5kg/ mm²and adding emulsion in the texturing rolling process, and rolling the titanium coil before texturing to a target thickness through 1 ~ 3 passes of rolling to obtain the titanium coil after texturing.

and step two, the adopted laser texturing roll is a texturing roll obtained after the cold rolling working roll is subjected to laser disordered texturing treatment, the surface roughness of the laser texturing roll is 8 ~ 15 mu m, the roughness peak count Rpc value of the laser texturing roll is more than 60, and the total time of pressing and grinding the laser texturing roll in the texturing rolling process is controlled to be not more than 3min so as to reduce the attenuation of the roughness of the laser texturing roll.

the rolling force and the emulsion flow are controlled according to the yield strength of the titanium coil, when the yield strength of the titanium coil before texturing is 140 ~ 300 MPa, such as TA1 or TA8 ~ 1 titanium coil, the rolling force is controlled to be 300 ~ 500 tons, and the emulsion flow is controlled to be 900 ~ 1500L/min, when the yield strength of the titanium coil before texturing is 300 ~ 450 MPa, such as TA2 or TA8 titanium coil, the rolling force is controlled to be 500 ~ 800 tons, and the emulsion flow is controlled to be 1500 ~ 2100L/min, when the yield strength of the titanium coil before texturing is 450 ~ 550 MPa, such as TA3 titanium coil, the rolling force is controlled to be 800 ~ 1000 tons, and the emulsion flow is controlled to be 2100 ~ 3000L/min.

step three, degreasing the coiled material

and (3) degreasing the roughened titanium coil, and removing emulsion attached to the surface of the roughened titanium coil to obtain the cold ~ rolled titanium coil with the surface roughness of 1 ~ 3 microns.

example one:

1) The roughness of the adopted laser texturing roller is 12 mu m, and the Rpc value is 65;

2) The TA1 titanium coil is degreased and annealed in a cover mode after being cold-rolled to 1.01mm by a cold-rolled working roll;

3) Replacing the cold rolling working roll with a laser texturing roll, and pressing and grinding the roll for 1 min;

4) Performing texturing rolling on the titanium belt, wherein the rolling force is 500 tons, the emulsion flow is 1000L/min, and the reduction is 0.005 mm; texturing for 1 pass;

5) And (4) degreasing to obtain the high-surface-roughness cold-rolled titanium coil with the roughness of 2.7 mu m.

Example two:

1) The roughness of the adopted laser texturing roller is 10 mu m, and the Rpc value is 70;

2) The TA2 titanium coil is degreased and annealed in a cover mode after being cold-rolled to 0.4mm by a cold-rolled working roll;

3) replacing the cold rolling working roll with a laser texturing roll, and pressing and grinding the roll for 1 min;

4) Performing texturing rolling on the titanium belt, wherein the rolling force is 800 tons, the emulsion flow is 2000L/min, and the reduction is 0.01 mm; texturing for 1 pass;

5) And (4) degreasing to obtain the high-surface-roughness cold-rolled titanium coil with the roughness of 2.5 mu m.