Method for determining degree of coverage of metal part having undergone treatment modifying surface roughness of part

A method for determining the degree of coverage of a metal part having undergone a treatment modifying the surface roughness of the part, characterised in that it comprises the following steps: a stepof determining a calibration function (C) of a parameter (L*) of the CIELAB colour space as a function of the degree of coverage, in such a way as to be able to link a given value of the parameter (L*) with the corresponding value of the degree of coverage, a step of measuring the value of the parameter (L*) of the part, and a step of determining the degree of coverage of the part by linking, using the calibrating function, the corresponding value of the degree of coverage of the part with the value of the parameter measured in this way (L*). 一种用于确定金属部件的覆盖度的方法，所述金属部件经历过改变所述部件表面粗糙度的处理，其特征在于，所述方法包括以下步骤：对作为覆盖度的函数的CIELAB色彩空间的参数(L*)的校准函数(C)进行确定以便能够将所述参数(L*)的给定值与覆盖度的对应值相关联的步骤，测量部件的所述参数(L*)值的步骤，以及通过使用校准函数将部件覆盖度的对应值与以这种方式测量的参数(L*)的值相关联来确定所述部件覆盖度的步骤。