对制作PS版的铝板基较基本的技术要求是表面光滑平整，无擦划伤、坑包、印痕、非金履压入、气孔、轧制条纹等表观缺陷，厚薄一致，波浪度控制在1mm内，平直度小于2I；组织细密均匀，无偏析、夹渣，内应力分由对称、均匀；粗糙度Ra值小于0.28，以保证电解砂目细密均匀。目前我国大量使用的板基材料为1050A、1060等。
The basic technical requirement for making PS plate is smooth and flat surface, no scratches, pits, imprints, non-gold crawler indentation, porosity, rolling stripes and other apparent defects, uniform thickness, waviness within 1 mm, flatness less than 2 I; fine and uniform microstructure, no segregation, slag inclusion, internal stress from symmetrical and uniform The roughness Ra value is less than 0.28, so as to ensure that the electrolytic sand mesh is fine and uniform. At present, 1050A, 1060 and so on are widely used in China.
B碱洗
B alkali washing
通常，由铝加工厂提供的铝板，其表面都带有一定量的油，油和氧化膜对砂目处理有影响，在PS版生产中常用热碱冲洗铝板进行表面处理。
Usually, the surface of aluminium sheet provided by aluminum processing plant contains a certain amount of oil. Oil and oxide film have an impact on sand treatment. In PS plate production, hot-alkali washing aluminium sheet is often used for surface treatment.
通常用碱液来去除氧化膜和油。常用除油液的配比为：NaOH的质量钠等缓蚀剂及葡萄糖酸钠、脂肪酸聚氧乙烯醚类增溶、络合等表面活性剂。
Usually alkali solution is used to remove oxide film and oil. The common proportion of degreasing solution is NaOH mass sodium and other corrosion inhibitors, sodium gluconate, fatty acid polyoxyethylene ether solubilization, complexation and other surfactants.
除油液的温度通常控制在55～60℃左右，除油的效果与溶液的温度有关。若温度太高，则造民对铝板基严重腐蚀，因而必须控制温度。

The temperature of the degreasing fluid is usually controlled at about 55~60 degrees. The effect of oil removal is related to the temperature of the solution. If the temperature is too high, the generator will seriously corrode the aluminum plate foundation, so the temperature must be controlled.
除油的时间必须经过认真对比较后确定。因为，它与各种不同生产线有关。卷筒生产线则与生产线的速度有关，以4m/min为例，除油时间必须这到20s，其效果才能给以保证。
The time of oil removal must be carefully contrasted and finalized. Because it is related to various production lines. The drum production line is related to the speed of the production line. Take 4m/min as an example, the oil removal time must reach 20s, and the effect can be guaranteed.
除油液必须注意及时更新，因为在除油过程中会生成大量的皂化物、乳化物和铝盐，它们的存在影响除油效果，并阻碍对铝板表面油污的皂化和乳化，当发现除油效果不强时，必须及时更新。通常若通过碱泵进行循环时，除油液能保持较长时间，若不循环则更新时间缩短。
Oil removal liquid must be updated in time, because a large number of saponifiers, emulsifiers and aluminum salts will be generated in the process of oil removal. Their existence affects the effect of oil removal, and hinders the saponification and emulsification of oil stains on the surface of aluminum plate. When it is found that the effect of oil removal is not strong, it must be updated in time. Usually, when circulating through the alkali pump, the oil removal liquid can be maintained for a long time, if not, the renewal time will be shortened.
检查除油效果较简单的办法是用水。除油效果好的铝板表面水能均匀地附着分散，若水倒上后，在铝板表面呈水珠状，则说明除油效果不好。除油的温度要经常注意，除油液的温度过低，则可能造成除油不彻底。
The easiest way to check the degreasing effect is to use water. The water on the surface of aluminum plate with good degreasing effect can be uniformly adhered and dispersed. If the water is poured on the surface of aluminum plate, the degreasing effect is not good. The temperature of the oil should be paid attention to frequently. Besides the low temperature of the oil, it may cause oil removal.
C酸洗
C pickling
在生产工艺中，碱洗之后有一硝酸酸洗过程，其目的是去除碱洗后的残留物质，中和残余的碱液。硝酸溶液的质量浓度为5％～10％。配制时注意将硝酸小心地倒入水中，充分混合。在酸洗过程中应经常注意溶液的浓度分析，及时补充。
In the production process, there is a nitric acid pickling process after alkali washing. The purpose is to remove the residual substances after alkali washing and neutralize the residual lye. The mass concentration of nitric acid is 5% to 10%. When preparing, carefully pour nitric acid into the water and mix it well. In the pickling process, we should pay attention to the concentration analysis of the solution and replenish it in time.
D粗化
D coarsening
粗化是为了形成具有要求粗糙度的砂目结构。粗化既可提高铝板基表面对水的亲和力，提高板基表面湿润量，防止版面上脏；同时粗化后的表面还可提高版同与感光剂的附着力，进而提高印版的耐印力。
The coarsening is to form the sand mesh structure with required roughness. Coarsening can not only improve the affinity of water on the surface of aluminum plate, improve the wettability of the surface of aluminum plate and prevent the plate from dirty, but also improve the adhesion of the plate with the photosensitizer, thereby improving the printing endurance of the plate.
粗化后的砂目是由无数的凸峰和凹谷组成，不同的砂目结构，对保水性感光层的附着力影响较大，并对PS版的使用带来较大影响。生产中用表面粗糙度测试仪绘制的砂目粗糙断面轮廓曲线的特征参数来表征。
Coarsened sand mesh is composed of numerous peaks and valleys. Different sand mesh structures have great influence on the adhesion of water-holding photosensitive layer and the use of PS plate. Characteristic parameters of rough section contour curve of sand mesh drawn by surface roughness tester are used to characterize the curve.
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I believe that after reading the introduction of this article, the aluminum plate manufacturer http://www.jndclyyxgs.com will also have their own understanding of the future for such problems can be well solved.