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An analysis of inclusion defects on strip steel surface induced by polyurethane roller

机译：聚氨酯辊在带钢表面产生夹杂物缺陷的分析

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摘要

In cold rolling, good surface quality should be maintained with the requirement of constant increasing productivity. A poor strip surface quality after cold rolling may have a large impact on the downstream process, like annealing, galvanization and painting. The surface quality could be deteriorated in many forms affected by different factors. Micro-pits caused by the surface roughness of the mother sheet or pickling corrosion could affect the surface brightness [ 1 ]. Herring-bone and reduction-mark caused by lubrication failure could form liner gloss [2]. Asperity deformation caused by lubricant trapping and iron fines formation could affect the surface roughness [3]. Transfer layer caused by adhesion under high pressure could conduct surface wear [4j. Inclusions formed by iron fine or oxide could cause stress concentration and lead to surface crack in rolling contact [5-7]. Moreover, diameter of work rolls, temperature, lubricant and reduction rate also should be taken into account [1,3,8]. However, few reports focused on the effect of the polymer transport rollers on the final surface quality, since the polymer transport rollers serve the whole rolling process, and its debris were very likely to adhere to the steel surface under high pressure or high temperature [9-12].
机译：在冷轧中，应保持生产率的不断提高，并保持良好的表面质量。冷轧后不良的带钢表面质量可能对下游工艺（如退火，镀锌和喷漆）产生很大影响。受不同因素影响，表面质量可能以多种形式变差。母板表面粗糙度或酸洗腐蚀引起的微凹坑可能会影响表面亮度[1]。润滑失败导致的人字形和减少痕迹可能形成衬里光泽[2]。润滑剂的捕获和铁屑的形成引起的粗糙变形可能会影响表面粗糙度[3]。在高压下由于粘附而导致的转印层可能会导致表面磨损[4j。铁粉或氧化物形成的夹杂物可能会导致应力集中并导致滚动接触中的表面裂纹[5-7]。此外，还应考虑工作辊的直径，温度，润滑剂和压下率[1,3,8]。但是，很少有报道关注聚合物输送辊对最终表面质量的影响，因为聚合物输送辊在整个轧制过程中均有效，并且其碎屑很可能在高压或高温下粘附在钢表面[9 -12]。

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