阅读说明：本技术 一种控制铜带表面纹理的方法 (Method for controlling surface texture of copper strip ) 是由 孔令豪 陈清香 冯茜 田玉仙 张锋 张卫 王婷 张国 薛晓康 杜俊玲 于 2021-08-31 设计创作，主要内容包括：本发明涉及铜带材生产过程中表面纹理的控制方式,具体是一种通过控制成品轧制时最后一道次加工率,将轧辊的表面纹理复制到铜带表面,从而实现铜带表面纹理均匀一致的方式。本发明通过对轧制铜带时使用的轧辊进行磨削加工,先使磨削后的轧辊表面粗糙度及纹理达到铜带同等要求,然后控制铜带成品轧制时最后一道次加工率,将轧辊的表面纹理复制到铜带表面,从而实现铜带表面无色差、微观纹理均匀一致,粗糙度Ra＜0.1μm的目标。本发明开辟了一条全新的技术路线,且有效实现了提高铜带表面纹理的目的,该方法构思巧妙,且有效降低了生产成本。(The invention relates to a control mode of surface texture in the production process of a copper strip, in particular to a mode of copying the surface texture of a roller to the surface of a copper strip by controlling the processing rate of the last pass during the rolling of a finished product, thereby realizing the uniformity of the surface texture of the copper strip. The invention carries out grinding processing on the roller used in rolling the copper strip, firstly leads the surface roughness and the texture of the roller after grinding to meet the same requirements of the copper strip, then controls the processing rate of the last pass in rolling the finished product of the copper strip, copies the surface texture of the roller to the surface of the copper strip, thereby realizing the purposes of no chromatic aberration on the surface of the copper strip, uniform and consistent microscopic texture and roughness Ra of less than 0.1 mu m. The invention opens up a brand new technical route, effectively realizes the purpose of improving the surface texture of the copper strip, has ingenious conception and effectively reduces the production cost.)

1. A method for controlling the surface texture of a copper strip is characterized by comprising the following steps: 1) selecting a roller material;

2) grinding a roller;

3) after the grinding of the roller is finished, detecting the roughness at the two ends of the roller by using a roughness meter to ensure that the surface roughness Ra0.06-0.08 mu m of the roller is ensured; the roller surface has no knife lines and obvious color difference by visual observation; observing the surface of the roller by using a hand-held magnifier to ensure that the surface texture of the roller is uniform and consistent; if one index does not meet the requirement, grinding is continued;

4) when the copper strip finished product is rolled, the ground roller is used for rolling for the last time; the last processing rate is less than or equal to 15 percent, and the rolling reduction is less than 0.1 mm;

5) after rolling, the roughness and the surface texture of the roller are copied on the surface of the copper strip, so that the surface of the copper strip meets ideal requirements.

2. The method for controlling the surface texture of the copper strip as claimed in claim 1, further comprising the step (6): and (3) detecting the surface roughness Ra of the copper strip by using a roughness meter to be less than 0.1 mu m, observing the surface of the copper strip by using a 40-time microscope, wherein the surface textures are uniform and consistent, and observing the surface of the copper strip by naked eyes to be free from chromatic aberration.

3. The method of claim 1, wherein 1) the material of the roller is 9Cr2Mo, the surface HS of the roller body is: 88-98; 2) grinding a roller: the grinding wheel is made of white corundum, the rotating speed of the grinding wheel is 750 plus 850rpm, the rotating speed of the roller is 80rpm, and the moving speed of the Z axis is 300 plus 500 mm/min; the grinding time is 3.5-4 h.

Technical Field

The invention relates to a control mode of surface texture in the production process of a copper strip, in particular to a mode of copying the surface texture of a roller to the surface of a copper strip by controlling the processing rate of the last pass during the rolling of a finished product, thereby realizing the uniformity of the surface texture of the copper strip.

Background

At present, the homogenization competition of the copper product market is increasingly violent, and a plurality of copper product processing manufacturers aim at the domestic middle-high-end copper product market to research and develop products and further improve the product quality. For example, medium-high end products such as battery tab belts, LED belts, housing belts, connector belts, frame belts, etc., have very strict requirements on the surface of copper strips, and have higher requirements on surface roughness, internal tissues and surface micro-texture besides requiring no defects on the surface of the product, so that the difficulty in production and processing is obviously increased, which requires further exploration and innovation in the aspects of equipment, process, technology, materials, etc.

Disclosure of Invention

The invention provides a control method for realizing the surface roughness Ra of the copper strip less than 0.1 mu m, no chromatic aberration on the surface of the copper strip and uniform and consistent microscopic textures.

The invention is realized by adopting the following technical scheme: a method for controlling the surface texture of a copper strip, comprising the following steps: 1) selecting a roller material;

2) grinding a roller;

3) after the roller is ground, the roughness is detected at the two ends of the roller by using a roughness meter, and the surface roughness Ra0.06-0.08 μm of the roller is ensured (the data can ensure that the surface roughness Ra of the copper strip is less than 0.1 μm); the roller surface has no knife lines and obvious color difference by visual observation; observing the surface of the roller by using a hand-held magnifier to ensure that the surface texture of the roller is uniform and consistent; if one index does not meet the requirement, grinding is continued;

4) when the copper strip finished product is rolled, the ground roller is used for rolling for the last time; the last processing rate is less than or equal to 15 percent, and the rolling reduction is less than 0.1 mm;

5) after rolling, the roughness and the surface texture of the roller are copied on the surface of the copper strip, so that the surface of the copper strip meets ideal requirements.

The invention carries out grinding processing on the roller used in rolling the copper strip, firstly leads the surface roughness and the texture of the roller after grinding to meet the same requirements of the copper strip, then controls the processing rate of the last pass in rolling the finished product of the copper strip, copies the surface texture of the roller to the surface of the copper strip, thereby realizing the purposes of no chromatic aberration on the surface of the copper strip, uniform and consistent microscopic texture and roughness Ra of less than 0.1 mu m. The invention opens up a brand new technical route and effectively realizes the purpose of improving the surface texture of the copper strip; the method has ingenious conception and effectively reduces the production cost.

Further, 1) the material of the roller is 9Cr2Mo, the surface HS of the roller body is as follows: 88-98; 2) grinding a roller: the grinding wheel is made of white corundum, the rotating speed of the grinding wheel is 750 plus 850rpm, the rotating speed of the roller is 80rpm, and the moving speed of the Z axis is 300 plus 500 mm/min; the grinding time is 3.5-4 h.

The steps control the material of the roller, the grinding process parameters of the roller and the like, and can ensure that the surface roughness and the texture of the roller meet the same requirements of the copper strip.

In the prior art, a copper strip finished product grinding and polishing mode is usually adopted, so that the surface of a copper strip meets the requirements, equipment investment is large, and grinding and polishing equipment and processes must be added in the production process; compared with the prior art, the method has the advantages that the surface characteristics of high-end products are easily achieved by skillfully controlling the rolling machining rate of the rollers and the finished products, the method is simple, the operation and the execution are easy, and the method is suitable for being popularized to the surface control of the high-end products such as copper and aluminum alloy strips.

Drawings

FIG. 1 is a photograph of a surface of a plain copper strip.

FIG. 2 is a photograph of the surface of a high-end copper strip according to the present invention.

Detailed Description

The invention is realized by the following technical scheme:

1) roll material 9Cr2Mo, roll body surface HS: 88-98.

2) Grinding a roller: the grinding wheel is made of white corundum, the rotating speed of the grinding wheel is 750 plus 850rpm, the rotating speed of the roller is 80rpm, and the moving speed of the Z axis is 300 plus 500 mm/min.

The grinding time is 3.5-4 h.

3) After the grinding of the roller is finished, detecting the roughness at the two ends of the roller by using a roughness meter to ensure that the surface roughness Ra0.06-0.08 mu m of the roller is ensured; the roller surface has no knife lines and obvious color difference by visual observation; and observing the surface of the roller by using a hand-held magnifier to ensure that the surface textures of the roller are uniform and consistent. And if one index does not meet the requirement, the grinding is continued.

4) When the copper strip finished product is rolled, the ground roller is used for rolling in the last pass, the processing rate of the last pass is usually less than or equal to 15%, and the rolling reduction is less than 0.1 mm.

5) After rolling, the roughness and the surface texture of the roller are perfectly copied on the surface of the copper strip, so that the surface of the copper strip meets ideal requirements.

6) And (3) detecting the surface roughness Ra of the copper strip by using a roughness meter to be less than 0.1 mu m, observing the surface of the copper strip by using a 40-time microscope, wherein the surface textures are uniform and consistent, and observing the surface of the copper strip by naked eyes to be free from chromatic aberration.

Fig. 1 shows that the surface of the common copper strip obtained by the prior art is imaged by amplifying by 40 times, and the copper strip produced by the common process has rough surface and fuzzy and scattered lines.

FIG. 2 shows that the surface of the high-end copper strip is imaged by amplifying by 40 times, and the copper strip produced by the method has fine and smooth surface, clear and uniform lines.

The invention overcomes the technical problem that the surface of the copper strip is difficult to achieve high smoothness and uniform texture, changes the traditional copper strip surface control mode, and has certain advancement and competitiveness.

In the prior art, the surface of a copper strip meets the requirements by adopting a grinding and polishing mode of a finished copper strip product, equipment investment is large, grinding and polishing equipment and processes must be added in the production process, and the method easily realizes the surface of a high-end product by controlling the processing rate of a roller and the finished product rolling, is simple, is easy to operate and execute, and is suitable for being popularized to the surface control of the high-end products such as copper and aluminum alloy strips.