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鋼板表面質量是鋼板質量的重要指標之一，表面質量的優劣直接影響其最終產品的質量與性能。

The surface quality of steel plate is one of the most important indexes for the quality of steel plate.

在鋼板加工過程中，由于原材料、軋制設備和工藝等多種原因，常常導致鋼板表面出現結疤、裂紋、輥印、刮傷、針眼、鱗皮、孔洞、麻點等各種缺陷。這些缺陷不僅影響到產品的外觀，而且降低了產品的抗腐蝕性、耐磨性和疲勞強度等性能。如何在生產過程中快速檢測鋼板的表面質量，有效控制和提高產品的表面質量，降低產品的次品率，提高勞動生產效率，對于鋼板加工企業具有十分重要的現實意義。

In steel processing, as raw materials, rolling equipment and technology and other reasons, often cause scarring, cracks, scratches, roller, needle, scale, holes, pits and various defects in the surface of the steel plate. These defects not only affect the appearance of the product, but also reduce the corrosion resistance, wear resistance and fatigue strength. How the quality of the steel plate surface rapid detection in the production process, effective control and improve product quality, reduce product defect rate, improve labor productivity, has very important practical significance for steel processing enterprises.

目前鋼板表面缺陷檢測的方法，主要有傳統的無損檢測和現代的機器視覺技術。其中，無損檢測技術主要有渦流檢測技術、紅外檢測技術和漏磁檢測技術等。但是，由于這些技術方法并非十全十美，有的還存在各種不同的缺點，比如檢測精度低、檢測速度慢、無法對缺陷進行分類、缺陷漏檢率高、現場安裝條件苛刻等，因此并不能完全滿足高速軋制帶鋼表面質量檢測的要求。

At present, the methods of surface defect detection of steel plate mainly include traditional nondestructive testing and modern machine vision technology. Among them, nondestructive testing technology mainly includes eddy current testing technology, infrared detection technology and magnetic flux leakage testing technology. However, because these methods are not perfect in every respect, some also have various shortcomings, such as low precision, slow detection speed, unable to defect classification, defect detection rate is high, on-site installation conditions, and therefore can not fully meet the surface quality requirements of high-speed rolling strip detection.

隨著CCD(電荷耦合元件)技術、圖像處理技術，尤其是計算機技術的飛速發展，機器視覺技術也迅速發展，使鋼板表面質量在線檢測成為可能。

With the rapid development of CCD (charge coupled device) technology and image processing technology, especially computer technology, machine vision technology is developing rapidly.

這種在線檢測系統可在生產線正常運行的條件下實時、高效地檢測出鋼板表面的各類缺陷，通過統計分析并參照產品質量等級評定標準，評估出單個或批量產品的質量狀況，并提供給工廠質量控制部門，作為其決策的依據。同其他檢測技術相比，具有很大的優越性。

The online detection system in the production line running under the condition of real-time and efficient to detect various types of defects on steel plate surface, through statistical analysis and reference standard for grading the quality of products, assess the quality from single or batch of products, and provide the factory quality control department, as the basis for decision-making. Compared with other detection techniques, it has great advantages.

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