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Method and device for increasing the sensitivity of an in-line measurement of the surface cleanliness of steel strips
Method and device for increasing the sensitivity of an in-line measurement of the surface cleanliness of steel strips
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机译：用于提高钢带表面清洁度的直线测量的灵敏度的方法和装置
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摘要
A method for automated, in-line measurement of a differentiated surface cleanliness, in terms of carbon, of a continuously-moving metal sheet or strip, having a level of surface carbon pollution lower than 100 mg/m2, includes: generating a radiation beam using a source; focusing the radiation beam using a focusing device such that an energy density deposited on the metal strip or sheet is sufficient to create a plasma and generate CN radicals in the plasma if carbon and nitrogen are present; creating a nitrogen atmosphere around the plasma using a sweeping system with a flow rate that prevents any presence of oxygen from air in the plasma; analyzing light emitted by the plasma using an optical collection device, and redirecting the light toward a spectrometer or device for separating wavelengths of the emitted light; measuring an intensity of an intense vibration line of the CN radical.
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机译：一种用于自动，在线测量差异化表面清洁度的方法，碳的连续移动金属板或带有低于100mg / m 2的表面碳污染水平，包括：产生辐射束 使用源; 使用聚焦装置聚焦辐射束，使得沉积在金属条或片上的能量密度足以在存在碳和氮气中产生等离子体并在等离子体中产生CN基团; 使用具有流速的扫描系统在等离子体周围产生氮气氛，该流量可以防止在等离子体中的空气中存在氧气的任何存在; 使用光学收集装置分析等离子体发射的光，并将光朝向光谱仪或用于分离发射光的波长; 测量CN自由基的强烈振动线的强度。
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