JPS5830396B2 - Manufacturing method of scale material with surface treatment plating - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a scale material that has been subjected to surface treatment plating that can uniformly perform surface treatment plating on the entire surface of the scale material, and a scale is attached using an etching technique. An electrically insulating shroud is installed on the periphery of the scale material at approximately right angles to the surface of the scale material, and the height of the shroud that protrudes approximately at right angles from the surface of the scale material is determined by It is characterized in that it is high at the corner and low at the middle of both corners, and in this state the scale material is subjected to surface treatment plating such as chrome plating.

Conventionally, surface treatments such as hard chrome plating on the surface of scale materials have been frequently used to improve the hardness of the product surface and to make it shine.

If this surface treatment plating layer is not uniformly applied to the entire surface of the scale material, the hardness and gloss will vary and the product will be defective.

However, the flow of metal ions flowing from the anode toward the scale material has a phenomenon in which the flow that goes straight toward the scale material at the periphery overlaps with the flow that detours slightly from the outside and goes around the scale material. The drawback is that only the plated layer is thick.

If the peripheral edge is plated thickly in this way, as described above, variations in surface hardness and gloss will occur, making it unsuitable for use as a scale material.

When a surface treatment plating layer is formed on the scale material, it is necessary to apply an etching protective film for subsequent graduations, and then once dissolve the surface treatment plating layer on the exposed scale portions with chemicals.

At this time, as mentioned above, if the surface treatment plating layer on the periphery of the scale material is thick, that is, if the plating thickness is not uniform, the thinner part will be completely removed while the thicker part is being removed, and the surface of the scale material will be further removed. It will be violated in 1.

For this reason, it is desirable that the surface treatment plating layer be applied to a uniform thickness over the entire surface.

The present invention solves this problem, since when applying a surface treatment plating layer to the scale material, an electrically insulating shroud is placed around the periphery of the scale material at approximately right angles to the surface of the scale material. The periphery of the scale material is plated thickly because the electrically insulating shroud prevents the deposits that cause the thickness of the parts that are fed from the outside of the edge of the scale material and become undone from going around and being deposited. This prevents the phenomenon of plating, and allows the entire surface of the scale material to be plated to a uniform thickness.

Therefore, it goes without saying that the product basically does not have uneven hardness or uneven gloss, but when the surface treatment plating layer on the scale part to be etched is removed, the surface of the scale material on the thin plated part is plated. It is no longer attacked by chemicals that dissolve the layer.

At this time, if the electrically insulating shroud is installed tilted inward, it will be shaded and the peripheral edge will be plated thinly, so the electrically insulating shroud should be placed against the surface of the scale material. It must be installed at a nearly right angle, and it must be close to the surface of the scale material. If the old anode is above, an electrically insulating shroud must be installed vertically and bypassed from the outside. To reliably prevent excess plating from being fed and to enable average thickness plating to be applied to the entire surface of a scale material.

At this time, if the height of the electrically insulating shroud is constant, the distribution of plating thickness will be thicker at the corners and thinner in the middle of both corners. Since the plating is made higher at the corners and lower at the middle of both corners, the entire surface of the scale material can be plated to a more uniform thickness.

As described above, the present invention exhibits the excellent feature that suitable surface treatment plating can be applied to the scale material.

Next, an example of the implementation of the present invention will be described in detail as follows.

In the drawings, 1 is an anode, 2 is a scale material,
3 is a vinyl chloride shroud, 4 is a chrome plating solution, 5 is a plating tank, 6 is a plating tank, and a is a line showing the flow of metal ions.

In this way, the electrically insulating vinyl chloride shrouding plate 3 is installed around the scale material 20 at a right angle to the two surfaces of the scale material, and the shrouding plate 3 protrudes from the surface of the scale material 2 at a substantially right angle. If the installation height is set high at the 20 corners of the scale material and low at the middle of both corners, and chrome plating is performed on the scale material in this state using a conventional method, the plating will adhere to the line a indicating the flow of metal ions on the outside. The vinyl chloride shrouding plate 3 prevents the scale material 2 from being overlapped and thickly coated on the periphery of the scale material 2, and since the height of the shrouding plate 3 is adjusted, a uniformly thick plating layer 6 can be formed. It is formed.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the plating state of the embodiment of the present invention, Fig. 2 is a slope view of the state in which a vinyl chloride shroud is erected around the periphery of the scale material of the embodiment of the present invention, and Fig. 3 is FIG. 3 is a cross-sectional view of a state in which the plating thickness is uneven when a vinyl chloride shroud is not erected. 2... Scale material, 3... Surrounding board.

Claims (1)

[Claims] 1. An electrically insulating shroud is installed approximately perpendicularly to the surface of the scale material on the periphery of the scale material to which a scale is attached using an etching technique, and the shroud protrudes approximately perpendicularly from the surface of the scale material. The height of the installation is set high at the corners of the scale material and low at the middle of both corners, and surface treatment plating such as chrome plating is applied to the scale material in this state. Method of manufacturing scale material.