JPS58185771A - Formation of cloisonne on tool for table use - Google Patents

Abstract

PURPOSE:To firmly bond cloisonne to metallic tools of iron, Al or the like for table use and to perfectly prevent the production of rejects due to the cracking of cloisonne layers, by specifying the pretreatment of the tools. CONSTITUTION:Ni-Co plating 2 is formed on a tool 1 made of iron, Al, stainless steel, brass, copper, low-brass or German silver by Ni striking. Silver cyanide plating 3 is formed on the plating 2 by silver striking, or gold cyanide plating 3 is formed by gold striking. The surface of the plated tool 1 is treated 4 with nitric acid contg. NaCl for giving luster, and cloisonne glaze 5 almost equal to that for silver in expansion coefft. is applied and baked to bond cloisonne. Thus, cloisonne ware is obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cloisonné processing method for dining utensils such as metal spoons, forks, and plates made of iron, aluminum, stainless steel, etc. and plated with silver or gold. The purpose of this is to ensure that the material, plating layer, and cloisonné are firmly adhered to each other so that they can withstand long-term use, and to eliminate defective products due to cracks in the cloisonné layer, enabling efficient production and making products cheaper. The body is made of iron, aluminum, stainless steel, brass, copper, red bronze, and nickel silver, and is plated with nickel strike or nickel cobalt, and is then plated with silver strike, silver cyanide, or gold strike, or cyanide. It is characterized by being gold-plated, then surface-treated with a mixture of nitric acid and sodium chloride, and then a cloisonné glaze is baked and fixed on top.

This type of conventional cloisonné processing method is special public show 4+! 3-2/7
5-g on the surface of iron and brass base materials as in Publication No. 2.
It requires a micron-thick silver plating, and this silver plating is then puff-polished to completely remove the plating, which is time-consuming because it requires no plating, and also due to the large difference in expansion coefficient between the base material and the cloisonné. Although there has been a drawback that cloisonné produces cracks, resulting in defective products, the present invention provides a cloisonné processing method for table utensils that can eliminate these drawbacks.

Further details will be described below with reference to illustrative drawings.

The vessel body 1 is made of aluminum, brass, copper, red bronze, and nickel silver.

After that, perform a nickel strike on this vessel 1, and
Apply nickel cobalt plating 2.

On this nickel cobalt plating 2, silver strike is performed to form cyanide gold plating 3, or gold strike is performed to form cyanide gold plating to a thickness of about 3.5 microns.

After that, put it in hydrochloric acid for about 10 seconds to completely drain it.

This vessel 1 was surface-treated with nitric acid containing 1-5g of sodium chloride to give it a luster, and the expansion coefficient was made to be almost the same as that of silver and gold cloisonné. The 5P cloisonné glaze is baked and fixed.

As a result, the reta nickel cobalt plating 2 applied by nickel strike completely adheres the vessel body 1 and the silver plating 3 or gold plating to make it strong, and also completely eliminates cracks in the cloisonné layer due to separation of the silver plating 3 or gold plating. This eliminates defective products and improves efficiency.

In addition, a suitable amount of sodium chloride is added to nitric acid, and the expansion coefficient is almost the same as that of silver cloisonné and gold cloisonne, resulting in a beautiful cloisonné-decorated tableware. Nickel strike and nickel cobalt plating 2 are applied to 6 bodies 1 made of steel, etc., and then silver or gold strike, silver cyanide plating 3 or gold cyanide plating is applied on top of this to form the vessel body 1 and silver plating 3.
Or, it is characterized by surface treatment 4 with a material made by adding sodium chloride to nitric acid to strengthen the adhesion of gold plating and firing cloisonné glaze 5, so it is similar to cloisonne based on silver and gold. products at extremely low prices,
Great industrial effect

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, with FIG. 1 being a front view and FIG. 2 being an A-All enlarged sectional view. 1... 5 bodies 2... Nickel cobalt plating 3... Silver plating 6... Cloisonné glaze Figure 1 Figure 2 Figure 1 ・2

Claims (1)

[Claims] Nickel strike, nickel cobalt plating is applied to the body made of iron, aluminum, stainless steel, brass, copper, red bronze and nickel silver, and then silver strike, silver cyanide plating or gold strike, gold cyanide plating is applied. A cloisonné processing method for table utensils, which is characterized in that the surface is treated with a mixture of nitric acid and sodium chloride, and a cloisonné glaze is baked and fixed thereon.