铝板生产过程中有哪些困难？

What are the difficulties in the aluminum plate production process?

　　众所周知,任何产品在生产过程中难免会出现一些质量问题,有的是机械导致,有的是人为操作影响的；铝板也不例外,在铝板带生产过程中,因为设备或者人员操作失误等原因容易出现质量问题,今天小编带您了解一下生产过程中常见的问题都有哪些?

As is well known, there are inevitably some quality problems in the production process of any product, some caused by machinery, and some influenced by human operation; Aluminum plates are no exception. In the production process of aluminum plates and strips, quality problems are prone to occur due to equipment or personnel operation errors. Today, the editor will take you to understand what common problems are in the production process?

　　在带坯轧制成各种铝板半成品和成品的过程中,以及在卷材精整、退火、转运、包装等工序的生产过程中,不可避免的会出现一些缺陷。这些缺陷的产生,一部分是铸锭、铸轧带坯本身的缺陷。时在注锭、铸轧工序可暴露,有时不能发现，而在后续的进一步加工过程中才能暴露;另一部分是在带箔材轧制、精整、退火、转运、包装等工序生产过程中产生的。这些缺陷的产生大部分是由于设备故障、违反操作规程、工艺参数调整不当、操作人员技术不够熟练和其他种种原因造成的。在铝箔的生产过程中，造成铝板质量缺陷有许多种，主要是大量的针孔、厚度超差、平整度差、各种原因的断带等，减少这些缺陷，对提高箔材质量是很有意义的。铸轧、热轧坯料中的夹杂、气道、轧制过程中的金属和非金属压人、擦、划伤以及厚度不均等都能给铝箔轧制造成很大困难.引起断带、针孔、厚度超差等。

In the process of rolling various semi-finished and finished aluminum plates with billets, as well as in the production processes of coil finishing, annealing, transportation, packaging, etc., some defects are inevitable. The generation of these defects is partly due to the defects of the ingot and the cast rolling strip itself. Sometimes it can be exposed during the ingot casting and rolling process, but sometimes it cannot be detected, and it can only be exposed during subsequent processing; The other part is generated during the production process of foil rolling, finishing, annealing, transportation, packaging, and other processes. The majority of these defects are caused by equipment malfunctions, violations of operating procedures, improper adjustment of process parameters, inadequate technical proficiency of operators, and various other reasons. In the production process of aluminum foil, there are many types of quality defects caused by aluminum sheets, mainly a large number of pinholes, thickness deviation, poor flatness, and various reasons for strip breakage. Reducing these defects is meaningful for improving the quality of foil materials. The inclusions, air passages, metal and non-metal pressure, friction, scratches, and uneven thickness in casting and hot rolling billets can all cause great difficulties in aluminum foil rolling, leading to strip breakage, pinholes, and thickness deviation.

　　划伤：划伤、擦伤、碰伤是铝板表面呈现的断续或连续的.单条沟状伤痕。一般是尖锐物与箔材表面接触后相对滑动时产生的。产生的主要原因:轧辊、导辊表面有尖状缺陷，或粘有硬杂物;剪切、合卷、分切的机械导辊、导路有尖状缺陷或枯有杂物。擦伤:由于物体间棱与面，或面与面接触后发生相对滑动或错动而在箱材表面造成的成束(或组)分布的伤痕。擦伤产生的主要原因:铝板在加工生产过程中，与导路、设备接触时，产生相对摩擦而造成擦伤;坯料松卷、松层或有燕窝状端面缺陷;轧制时张力使用不当，开卷时产生层间错动而产生擦伤。碰伤:铝卷与其他物体相撞后，在箱卷表面或端面产生的伤痕。其表现为表面或端面有部分凹陷。碰伤的主要原因:各生产工序吊运或存放不当;运输及搬运过程中碰伤;铝箔卷在退火料架或包装台上由其他突出物磕碰而产生伤痕。

Scratches: Scratches, abrasions, and bumps are intermittent or continuous grooves on the surface of aluminum plates. It is generally generated when sharp objects come into contact with the surface of the foil and slide relative to each other. The main cause of occurrence is that there are pointed defects or hard debris adhering to the surface of the rolling and guide rollers; The mechanical guide rollers and guides for cutting, winding, and slitting have pointed defects or debris. Scratches: Bundles (or groups) of distributed scars on the surface of box materials caused by relative sliding or displacement between edges or surfaces of objects, or after contact between surfaces. The main cause of scratches: During the processing and production process of aluminum plates, relative friction occurs when they come into contact with the guide and equipment, resulting in scratches; Loose coils, layers, or bird's nest shaped end defects in the raw material; Improper use of tension during rolling can result in interlayer misalignment and scratches during uncoiling. Collision: The scratches on the surface or end face of the aluminum coil after colliding with other objects. It manifests as a partial depression on the surface or end face. The main cause of collision: improper lifting or storage in various production processes; Collisions during transportation and handling; The aluminum foil roll is scratched by other protrusions on the annealing rack or packaging table.

　　以上就是铝板生产过程中常见的问题介绍。

The above is an introduction to common problems in the aluminum plate production process.

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