JPH01120650U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing the first embodiment of the device of the present invention, FIG. Figure 4 is a characteristic diagram showing the correspondence between the half-width and the degree of alloying based on the corrected distribution curve, Figure 5 is a configuration diagram showing another example, and Figure 6 is the reflection intensity distribution and alloying according to its half-width. 7A and 7B are configuration diagrams of the light receiving section in the conventional example, and FIG. 8 is a characteristic diagram showing the correspondence between the half-width of the reflection intensity distribution and the degree of alloying in the conventional example. FIGS. 9A to 9C are reflection intensity distribution curves that change as the degree of alloying progresses. 1 is a galvanized steel plate, 2 is a luminous flux, A is a reflection intensity distribution curve, H is a half width, 7 is a projector, 8 is a scanning mirror, 9 is a light receiver, 11 is a reflection intensity distribution measuring means, 12 is an arithmetic processing unit, P is the sharp peak part, B
is the corrected distribution curve.

Claims (1)

[Scope of utility model registration request] An alloying degree measuring device that measures the degree of alloying by irradiating light onto the surface of a galvanized steel sheet subjected to alloying treatment and using the half width of a reflection intensity distribution curve obtained from the reflected light, comprising: a projector; A scanning means for scanning the light beam from the projector onto the surface of the galvanized steel plate, a light receiver for receiving the reflected light, and measuring the intensity distribution of the reflected light from the intensity of the reflected light corresponding to the scanning position of the scanning means. It is equipped with a reflection intensity distribution measuring means, and an arithmetic processing means for calculating the half-width of the distribution curve obtained by the reflection intensity distribution measuring means and obtaining the degree of alloying from this half-width. A galvanized steel sheet characterized in that, in the case of a reflection intensity distribution having a sharp peak measured near a direction, the degree of alloying is measured from the half-width of a corrected distribution curve obtained by excluding the peak portion. Alloying degree measuring device.