Swinging-type long-pipe inner wall electroplating method and electroplating equipment applying same

Abstract

The invention discloses a swinging-type long-pipe inner wall electroplating method and electroplating equipment applying the same. The electroplating process comprises the following steps that an inner anode penetrates through a cathode long pipe to be electroplated; the two ends of the cathode long pipe are separately connected to a liquid inlet connector and a liquid outlet connector; the liquid inlet connector and the liquid outlet connector are communicated with a liquid storage tank; the two ends of the inner anode are separately fixed on the liquid inlet connector and the liquid outlet connector; then one end of the inner anode and the outer wall of the cathode long pipe are separately connected to the positive electrode and negative electrode of a power source through flexible conductors; an electroplating solution is circularly injected into the cathode long pipe through a liquid inlet in the liquid inlet connector and a liquid outlet in the liquid outlet connector, and the inner cavity of the cathode long pipe is fully filled with the electroplating solution; the power source is started, and the cathode long pipe and the inner anode are driven to swing in a reciprocating manner by a swinging mechanism, so that an electroplating layer is formed on the inner wall of the cathode long pipe. The swinging-type long-pipe inner wall electroplating method has the beneficial effects that a recovery groove does not need to be arranged; the electroplating layer is uniform in thickness; the electroplating quality is ensured; and moreover, a liquid conveying mechanism and a power delivery mechanism of the equipment are greatly simplified.

Description

technical field [0001] The invention relates to an electroplating process and equipment, in particular to a method for electroplating the inner wall of a swinging long tube and the electroplating equipment thereof. Background technique [0002] The traditional horizontal long tube electroplating must use the inner anode, but because the tube is long (generally 6m-12m), the inner anode is bound to produce deflection inside the long tube, which leads to the uneven vertical distance between the anode and the inner wall surface of the long tube, resulting in The uneven thickness of the coating directly affects the quality of electroplating. [0003] In order to overcome the above shortcomings, people invented the workpiece rotary plating, which makes the workpiece rotate around the inner anode and automatically adjusts by gravity to overcome the problem of uneven coating thickness caused by the deflection of the inner anode. However, certain technical problems also appeared dur...

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Problems solved by technology

[0005] 2. In this way, the electroplating solution cannot be completely filled in the tube, so that the upper part of the inner wall of the tube is always exposed to the air, which has a very serious impact on the electroplating quality

Moreover, only part of the inner wall of the tube is in contact with the electroplating solution, so the inner wall of the tube is not all electroplated at the same time, which affects production efficiency

[0006] 3. The energized wire and the cathode workpiece can only be connected by frictional contact, which is easy to form an arc and generate electric sparks, making the current unstable and affecting the quality of electroplating

[0007] 4. Because spin plating cannot be sealed, cleaning between various processes and different solutions has become a big problem

Since there is only one recovery tank at each end of the pipe, it is impossible to separate the different liquids, which brings insurmountable difficulties to water treatment and makes it impossible to achieve zero discharge

The only solution is to move the workpiece: moving the workpiece from one station to the next seriously affects production efficiency

Moreover, because the length specifications of the pipes are not exactly the same, there will be a problem of mismatching assembly dimensions every time they move to the next station

Either manual adjustment or automatic adjustment by hydraulic mechanism is not only time-consuming and labor-intensive, but also increases the complexity and cost of the equipment

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