JPS60135599A - Surface treatment of metal - Google Patents

Abstract

PURPOSE:To manufacture various products at the same time without dividing a treating vessel by handling many materials to be treated suspended from the same beam as one block unit so that the quantity of electric current supplied and the supply time can be controlled every unit. CONSTITUTION:A beam 1 for suspending materials W to be treated is divided into two parts 1A, 1B, and the parts are connected to each other with an electrically insulating plate as a connecting member 2. A power supplying member 6 and a suspending member 7 connected electrically to the member 6 are attached to each of the parts 1A, 1B, and materials W to be treated are suspended from the members 7. The power supplying members 6 are separately connected to power sources E1, E2 so that the supply of electric current can be controlled every unit.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a method for simultaneously performing a wide variety of surface treatments on workpieces made of aluminum-based metals or other metals in a suspended state.

For example, a long workpiece made of aluminum-based metal, such as a sack, is hung vertically in rows, degreased, and
The material is then transported to a surface treatment department for etching, desmutting, anodic oxidation, electrolytic coloring, electrodeposition painting, baking, etc., and is subjected to the necessary treatments. Among these treatments, especially for electrical treatments such as anodic oxidation, electrolytic coloring, electrodeposition coating, etc., an appropriate number of electrode members are prepared, and each material to be treated is placed at a certain distance from the electrode member in the electrolyte in the treatment tank. Processing is performed by holding the materials separated and electrically biasing each material to be treated to serve as one electrode, and electrically biasing the electrode member to serve as the other electrode.

Recent trends in such treatments have focused on cosmetics, and moreover, a wide variety of treatments have come to be required. Therefore, it has become preferable to produce products in small lots. However, current processing apparatuses of this type are large-sized and process a large number of materials at the same time, so they are not suitable for small-lot production. One method for this purpose is to divide a part of the treatment tank into multiple parts depending on the type of treatment bath used in the same treatment process, as disclosed in Japanese Patent Application Laid-Open No. 58-42795. A technical idea was provided in which the tanks are filled with different types of processing liquids, and each block of a large number of materials to be processed suspended on the same beam is simultaneously injected and processed separately into different processing tank parts. .

However, with this method, it is necessary to repair the treatment tank in the existing treatment equipment, which results in a very large loss and requires a large investment in equipment, making it difficult to carry out at an early stage. Furthermore, since the number of idle facilities will increase, this is difficult to deal with as a practical problem.

Purpose of the Invention The present invention solves the above-mentioned drawbacks of the prior art. In particular, in electrical processing, a large number of workpieces suspended on the same beam are treated as a plurality of blocks, and the energization time and energization time for each block are adjusted. The purpose of the present invention is to provide a metal surface treatment method that enables quantity control and thereby enables the simultaneous production of a wide variety of products in small quantities without dividing a treatment tank.

Structure of the Invention The metal surface treatment method according to the present invention suspends the material to be treated and uses two beams for feeding power to use it as one electrode.
The method is to divide the beam into two or more parts, assemble each divided beam part in a state that is electrically insulated from each other, and independently control the time and amount of current applied to the material to be treated suspended by each divided beam part. Features.

M In the embodiment shown in FIG.
shows a structure in which is divided into two parts 1A and IB.

These parts 1A and 1B are electrically insulated from each other and are connected and fixed by a suitable connecting member 2. For example, the second
As shown in the figure, the connecting member 2 can be a suitable electrically insulating plate.
It is preferable to separate the parts IA and 1B from each other and connect them by tightening bolts 3 and nuts 4. Furthermore, a suitable electrically insulating plate may be interposed in the separated portion. The electrically insulating cylindrical member 5 is unnecessary if the electrically insulating plate of the connecting member 2 is completely insulated.

Each of these beam portions 1A and IB is provided with a power supply member 6.
and a suspension member 7 that is electrically connected thereto is independently fixed, and the workpiece W is electrically connected to each suspension member 7 and suspended and supported as usual. It has become. Independent power supplies E1 and E2 are connected to each power supply member 6, so that electricity energization can be controlled independently.

The materials to be treated W suspended by such a beam are here put into a treatment tank 10 filled with the same treatment liquid, and are subjected to, for example, anodization treatment at the same time.

Although not shown here, electrodes that serve as cathodes are placed (permanently installed) in the processing tank 10 in correspondence with the material to be treated W that is electrically biased to serve as anodes. It is. At this time, by individually controlling the energization time and amount of energization from the power sources E1 and E2 to the beam portions 1A and IB, the beam portions The degree of processing is different for each block of the material to be processed W suspended by LA and IB.

In other words, desired treatments can be achieved by controlling the time and amount of current applied to the blocks of material to be processed W suspended by the respective beam portions 1A and 1B.

Although a structure in which the beam l is divided into two parts is shown here, it is of course possible to divide the beam into a larger number of parts, thereby simultaneously achieving a wide variety of decimal processing. It is also possible to divide the cathode in a similar manner. Furthermore, by combining a plurality of divided processing tanks as described above instead of using the same processing tank, even more varied processing can be achieved.

The effect of brightness The present invention provides the following effects.

(2) Different treatments, such as treatments with different film thicknesses, treatments with different shades of coloring, and the presence or absence of these treatments, can be accomplished simultaneously using the same treatment tank.

■ Therefore, high-mix, low-volume production can be easily achieved.

■ Renovation is easy and takes a short period of time, and its costs are low, and running costs are also low.

■ Suitable for saving labor and energy.

■ Productivity can be improved.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing a case in which the method of the present invention is carried out using an apparatus that divides the beam into two, which is one embodiment of the method. FIG. 2 is a perspective view showing the connecting portion of the beam. ■...Beam IA, IB...Beam part 2...Connecting member 3...Bolt 4...Nut 5...Cylinder member 6...Power supply member 7... ...Hanging member 10...Processing tanks R1, R2...Power supply Continued from page 1 0 Inventor: Kamagata, 3rd son, Funabashi city, Narashino field [phase] Inventor: Yoshishi Sahara, Funabashi city, Narashino field 0 Invention Person: Mino 1) Letter: Narashino Field, Funabashi City

Claims (1)

[Claims] This is a method for simultaneously performing a wide variety of surface treatments on a material to be treated in a suspended state, in which a beam to which electricity is supplied is divided into two or more to suspend the material to be treated and use this as one electrode, A metal surface treatment method characterized by assembling each split beam part in a state where they are electrically insulated from each other, and independently controlling the time and amount of current applied to the workpiece suspended by each split beam part. .