阅读说明：本技术 一种高端饮料罐表面纹路的控制方法 (Control method for surface texture of high-end beverage can ) 是由 黄久贵 赵奇少 俞炜 郭宏 赵慧江 于 2021-06-30 设计创作，主要内容包括：本发明提供一种高端饮料罐表面纹路的控制方法,其包括将镀锡板倒入双机架平整机中进行平整作业,工作参数如下：平整机工作辊配辊：1#机架平整工作辊：采用电火花毛化辊,粗糙度Ra控制1.45±0.05μm；2#机架平整工作辊：采用磨削光辊,粗糙度Ra控制0.45±0.04；平整机平整光辊磨削：采用100-125目粒径砂轮,砂轮磨料材质采用白刚玉或立方氮化硼,砂轮硬度选用中2级；轧制力控制：1#机架平整机轧制力5500±500KN,轧制公里数≤300KM；2#机架平整机轧制力4000±500KN,轧制公里数≤200KM。本发明通过发明设计平整机独特工作辊配辊方案、平整辊磨削要求以及和轧制工艺有效结合,可以从根本上解决高端饮料罐表面纹路粗糙、板面轧制纹路不均匀的现状。(The invention provides a control method of surface grains of a high-end beverage can, which comprises the following steps of pouring a tin plate into a double-frame temper mill for carrying out temper rolling operation, wherein the working parameters are as follows: the working roll of the temper mill is matched with the roll: leveling a working roll of a No. 1 frame: adopting an electric spark texturing roller, and controlling the roughness Ra to be 1.45 +/-0.05 mu m; leveling a working roll of a No. 2 frame: a grinding smooth roller is adopted, and the roughness Ra is controlled to be 0.45 +/-0.04; grinding a leveling smooth roller of a leveling machine: a grinding wheel with the particle size of 125 meshes is adopted, the material of the grinding wheel adopts white corundum or cubic boron nitride, and the hardness of the grinding wheel is selected from the middle 2 grade; controlling rolling force: the rolling force of the No. 1 rack temper mill is 5500 +/-500 KN, and the rolling kilometer number is less than or equal to 300 KM; the rolling force of the 2# frame planisher is 4000 plus or minus 500KN, and the rolling kilometer number is less than or equal to 200 KM. The invention designs a unique working roller matching scheme of the temper mill, the grinding requirement of the temper mill and effective combination with the rolling process, and can fundamentally solve the current situations of rough surface grains and uneven surface rolling grains of the high-end beverage can.)

1. A control method for surface texture of a high-end beverage can is characterized by comprising the following steps: the method comprises the following steps of pouring a tin plate into a double-frame temper mill for leveling operation, and adjusting the working parameters of the temper mill as follows:

(1) the technological parameters of the leveling machine working roll matching:

leveling a working roll of a No. 1 frame: adopting an electric spark texturing roller, and controlling the roughness Ra to be 1.45 +/-0.05 mu m;

leveling a working roll of a No. 2 frame: a grinding smooth roller is adopted, and the roughness Ra is controlled to be 0.45 +/-0.04;

(2) the grinding process of the leveling smooth roller of the leveling machine comprises the following steps:

a grinding wheel with the particle size of 125 meshes is adopted, the material of the grinding wheel adopts white corundum or cubic boron nitride, and the hardness of the grinding wheel is selected from the middle 2 grade;

(3) and rolling force control parameters are as follows:

the rolling force of the No. 1 rack temper mill is 5500 +/-500 KN, and the rolling kilometer number is less than or equal to 300 KM;

the rolling force of the 2# frame planisher is 4000 plus or minus 500KN, and the rolling kilometer number is less than or equal to 200 KM.

2. The method of controlling surface texture of a high end beverage can of claim 1, wherein: in the step (2), the white corundum is a white corundum material containing 97-99% of alumina mill.

3. The method of controlling surface texture of a high end beverage can of claim 1, wherein: the thickness of the tinning plate is 0.2mm-0.3mm, and the modulation degree range is T1-T5.

4. The method of controlling surface texture of a high end beverage can of claim 1, wherein: in the step (2), the grain diameter of the grinding wheel is 120 meshes.

5. The tinplate of any of claims 1-4 obtained by the method for controlling surface texture of a high-end beverage can, wherein: the surface roughness Ra of the tin plate is 0.35-0.55 mu m.

Technical Field

The invention belongs to the technical field of steel rolling, and particularly relates to a control method of surface grains of a high-end beverage can.

Background

The tin plate is a cold-rolled low-carbon steel sheet or strip plated on both sides with commercial pure tin, has the strength of steel in formability, also has the corrosion resistance, tin weldability and beautiful appearance of tin, and is an ideal material for packaging purposes. The surfaces of the tin plate are generally classified into eight forms of B, R1, R, R2, S1, S, M, S2 and the like, wherein the forms are the most popular types of B, R1, R and the like, and the surfaces of the forms are mostly used in the food can industry, so that the demand is high.

The coating of the high-grade beverage can adopts transparent priming paint in the printing and coating process, and the grain state on the surface of the tin plate can be clearly amplified after the printing is finished, so that the fineness and the uniformity of the grain on the surface of the tin plate become an important index for judging whether the high-grade beverage can is qualified or not. The only way for determining the surface texture of the tinning plate depends on the formulation of the flattening manufacturing process of the double-frame flattening machine.

Disclosure of Invention

The invention provides a control method of surface grains of a high-end beverage can, aiming at overcoming the defect that the control method of the surface grains is limited in the prior art, and researching a leveling process.

In order to solve the technical problem, the invention provides the following technical scheme of a control method for surface grains of a high-end beverage can, which comprises the following steps of pouring a tin plate into a double-frame temper mill for carrying out temper rolling operation, and adjusting working parameters of the temper mill as follows: (1) the technological parameters of the leveling machine working roll matching: leveling a working roll of a No. 1 frame: adopting an electric spark texturing roller, and controlling the roughness Ra to be 1.45 +/-0.05 mu m; leveling a working roll of a No. 2 frame: a grinding smooth roller is adopted, and the roughness Ra is controlled to be 0.45 +/-0.04; (2) the grinding process of the leveling smooth roller of the leveling machine comprises the following steps: a grinding wheel with the particle size of 125 meshes is adopted, the material of the grinding wheel adopts white corundum or cubic boron nitride, and the hardness of the grinding wheel is selected from the middle 2 grade; (3) and rolling force control parameters are as follows: the rolling force of the No. 1 rack temper mill is 5500 +/-500 KN, and the rolling kilometer number is less than or equal to 300 KM; the rolling force of the 2# frame planisher is 4000 plus or minus 500KN, and the rolling kilometer number is less than or equal to 200 KM.

Preferably, in the step (2), the white corundum is a white corundum material containing 97% -99% of alumina mill.

Preferably, the thickness of the tin plate is 0.2mm-0.3mm, and the modulation degree is T1-T5.

Preferably, in the step (2), the grain diameter of the grinding wheel is 120 meshes.

As another aspect of the present invention, a tin plate obtained by a method for controlling surface texture of a high-end beverage can, wherein: the surface roughness Ra of the tin plate is 0.35-0.55 mu m.

The invention has the beneficial effects that:

the invention provides a manufacturing method of surface grains of a high-end beverage can, and the current situations of rough surface grains and uneven surface rolling grains of the high-end beverage can be fundamentally solved by designing a unique working roller matching scheme of a temper mill, the grinding requirement of a temper mill and effectively combining with a rolling process.

Drawings

FIG. 1 is a schematic representation of the presence of marks on the surface of a work roll and the surface of a tin plate.

Detailed Description

The present invention will be described in detail with reference to the following embodiments in order to make the aforementioned objects, features and advantages of the invention more comprehensible.

The leveler used by the invention is a double-frame four-roller dry leveler, the tin plate is a common tin-plated substrate, the thickness is 0.2mm-0.3mm, and the modulation degree range is T1-T5.

Example 1

The embodiment provides a control method of surface grains of a high-end beverage can, wherein a tin plate is poured into a leveling machine, the surface grains of the tin plate are controlled by adopting two racks and adopting working rollers with different processing modes and roughness on the two racks, and the surface of a produced steel coil is ensured to meet the requirements.

The working parameters of the temper mill are adjusted during production as follows:

(1) the technological requirements of the leveling machine working roll matching are as follows:

leveling a working roll of a No. 1 frame: adopting an electric spark texturing roller, and controlling the roughness Ra to be 1.45 +/-0.05 mu m;

leveling a working roll of a No. 2 frame: a grinding smooth roller is adopted, and the roughness Ra is controlled to be 0.45 +/-0.04;

(2) the grinding process requirement of the leveling roller of the leveling machine is as follows:

a 120-mesh grinding wheel with the particle size controlled between 100 and 125 is adopted, and the grinding material of the grinding wheel adopts white corundum (containing 97 to 99 percent of alumina grinding) or cubic boron nitride; the hardness of the grinding wheel is selected from the middle 2 grade;

(3) the rolling force control requirement is as follows:

the rolling force of the No. 1 rack temper mill is 5500 +/-500 KN, and the rolling kilometer number is less than or equal to 300 KM;

the rolling force of the 2# frame temper mill is 4000 +/-500 KN, and the rolling kilometer number is less than or equal to 200 KM;

(4) the roughness control requirement of the flat surface: the roughness Ra is 0.35 to 0.55 μm.

Referring to the grain state of the surface of the working roll and the tinned plate in the traditional process in fig. 1, the stripes are grinding grains with different depths and lengths on the surface of the leveling roll along the circumferential direction, the reason of the grain difference is caused by the time difference that grinding materials of a grinding wheel fall off in the grinding manufacturing process of the working roll, and after the rough grains with different depths are formed on the surface of the working roll, the rough grains are copied and directly copied on the surface of the tinned plate by rolling of a leveling machine. The invention provides a manufacturing method of surface grains of a high-end beverage can, and the manufacturing method can fundamentally solve the current situations of rough surface grains and uneven rolling grains on a plate surface of the high-end beverage can by designing a unique working roller matching scheme of a temper mill and effectively combining the temper mill with a rolling process, obtain a tinned plate without any surface grains and meet the process requirements of the high-end beverage can.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.