METHOD FOR DETERMINING THE POLYESTER FRACTION OF A MULTI-COMPONENT POWDER DURING A THERMAL SPRAYING PROCESS, METHOD FOR COATING OR TOUCHING UP AN OBJECT BY MEANS OF A THERMAL SPRAYING PROCESS AND THERMAL SPRAYING DEVICE

摘要

The invention relates to a method for determining the polyester fraction in a multi-component powder during a thermal spraying process. According to the invention, the multi-component powder is heated and fed to an object with the aid of a carrier, forming a coating on said object and at least one measured value (10, 12) for the intensity of the light emitted by the combination of the carrier and multi-component material on the way to the object is detected at least in the range of a characteristic emission wavelength of polyester. A variable is then derived from all the measured values and the fraction of polyester to be determined is calculated on the basis of a previously defined relationship between the variable and the polyester fraction.