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    • 6. 发明授权
    • Method of investigating a coated surface of an object
    • 调查物体的涂层表面的方法
    • US08020435B2
    • 2011-09-20
    • US11914846
    • 2006-05-18
    • Bo Gillesberg
    • Bo Gillesberg
    • G01N37/00
    • C25D21/12C25D11/26G01N17/02G01N21/8422G01N21/8803G01N21/894G01N2021/8918
    • A method of visually investigating a coated surface of an object, the coating comprising a metal or an alloy, in order to determine whether or not the coating is tight. An increasing potential is applied to the object until a desired current level has been obtained or until a maximum potential has been reached. In case the coating is tight this results in a change in color of the coating. This may be due to a polarization of the coating material and/or due to an increase in thickness of a naturally occurring metal oxide layer. In case the coating is tight the desired current level can not be obtained, and the potential is increased to the maximum level resulting in a change in color. In case pinholes are present it is possible to obtain the desired current level, and the increase in potential is stopped before it is high enough to cause the change in color. Provides a dramatic visual effect allowing an immediate determination of whether or not pinholes are present. Need for additional equipment for determining the presence of pinholes is avoided. In case the coating material is or comprises tantalum or an alloy of tantalum, the color is changed into a distinct blue color.
    • 为了确定涂层是否紧密,可视化地研究物体的涂覆表面的方法,涂层包括金属或合金。 对物体施加增加的电位,直到获得期望的电流水平或直到达到最大电位。 在涂层紧密的情况下,这导致涂层的颜色变化。 这可能是由于涂层材料的极化和/或由于天然存在的金属氧化物层的厚度的增加引起的。 在涂层紧密的情况下,不能获得所需的电流水平,并且电位增加到最大水平,导致颜色变化。 在存在针孔的情况下,可以获得期望的电流水平,并且在高到足以导致颜色变化之前停止电位的增加。 提供戏剧性的视觉效果,可立即确定针孔是否存在。 避免需要额外的设备来确定针孔的存在。 在涂层材料是或包含钽或钽的合金的情况下,颜色变成明显的蓝色。
    • 10. 发明申请
    • Optical method and device for detecting surface and structural defects of a travelling hot product
    • 用于检测旅行热产品的表面和结构缺陷的光学方法和装置
    • US20070115473A1
    • 2007-05-24
    • US11603138
    • 2006-11-22
    • Jean-Luc Legoupil
    • Jean-Luc Legoupil
    • G01N21/84G01N21/88
    • G01N21/8901G01N25/72G01N2021/8918G01N2201/062G01N2201/0627
    • The object of the present invention is an optical method and device for detecting surface and structural defects of a travelling hot product. It is particularly applied to flat metal products during hot rolling. According to the method of the invention, images of the product stemming from a camera (4) and formed for one part by light for which the wavelength is in the infrared region and for another part by light for which the wavelength is in the visible spectrum are used. Detection of the images is provided by several linear sensors (C1, C2, C3), each of them being associated with the detection of one image, each located in a different focal plane (PB, PG, PR) associated with each wavelength range so as to obtain superposable images. The light forming the portion of the images for which the wavelength is in the visible region is a light of yellow, green or blue colour, produced by additional illumination means (2), sent onto the surface of the travelling product.
    • 本发明的目的是用于检测旅行热产品的表面和结构缺陷的光学方法和装置。 特别适用于热轧时的扁平金属制品。 根据本发明的方法,产生源自照相机(4)的产品的图像,并且通过用于波长在红外区域中的光而形成一部分的图像,另一部分由波长在可见光谱中的光形成 被使用。 图像的检测由几个线性传感器(C 1,C 2,C 3)提供,每个线性传感器与一个图像的检测相关联,每个图像位于不同的焦平面(P < ,P&lt; G&gt;,P&lt; R&gt;),以获得可叠加的图像。 形成波长在可见区域的图像的部分的光是由附加的照明装置(2)产生的黄色,绿色或蓝色的光,被发送到行进产品的表面上。