Automatic controlled stainless steel inner tube electrolytic polishing device

Abstract

The invention relates to the stainless steel inner pipe electrolytic polishing treatment, an automatic operation is employed, the processing parameter is automatically adjusted, thereby the processing quality stabilization can be guaranteed. An electrolytic polishing solution is introduced in the stainless steel pipe, on one hand, the bubbles generated in the electrolytic polishing treatment process can be timely discharged, and on the other hand, the residues generated during the electrolytic polishing treatment can be timely discharged. In addition, during the process of stainless steel inner tube electrolytic polishing, the stainless steel pipe is capable of rolling, the bubbles can be prevented from rising to top of the pipe to influence the electrolytic polishing effect on the top of the inner pipe. The rolling speed is adjustable, the electrolytic polishing solution is environment-friendly type liquid medicine, the current passed through the unit area is small, compared with a traditional electrolytic polishing solution, the power consumption is smaller, and the energy saving performance is provided. The electrolytic polishing device is a stainless steel pipe inner electrolytic polishing special machine, and can be used for electrolytically polishing the stainless steel pipes with various calibers. The device of the invention has the advantages of high automation degree, environmental protection, energy saving, high production efficiency and good polishing effect.

Description

technical field [0001] The invention relates to the technical field of stainless steel surface treatment, in particular to an automatic processing equipment for electrolytic polishing of stainless steel inner tubes, and the processing potion adopts the formula of environment-friendly stainless steel electrolytic polishing liquid. Background technique [0002] Existing stainless steel pipes are all produced by cold drawing. During the production process, the surface roughness of the inner pipe is often not ideal. For applications with high roughness requirements, it is often necessary to polish the inner surface of the stainless steel pipe. On the one hand, the roughness is reduced by mechanical polishing; on the other hand, the surface roughness is further reduced by electrolytic polishing, and a passivation film is formed to improve the corrosion resistance of the surface. [0003] Existing electrolytic polishing equipment can realize the polishing of pipe fittings or outer...

AI Technical Summary

Problems solved by technology

[0005] 1. The polishing effect is general: At present, most of the domestic electrolytic polishing of stainless steel tubes adopts the original old method, that is, a very long electrode is inserted into the stainless steel tube to be processed, and then the electrolytic polishing solution is injected, and then energized. If the electrode area is smaller than the inner surface area of ​​the stainless steel tube, the current of the electric field is very small, and the effect of electrolytic polishing is not bright; and because the inserted electrode is small in diameter, it is easy to bend, and it is easy to contact with the inner wall of the stainless steel, resulting in a short circuit and damage to the inner wall

[0006] 2. The processing size is limited: Due to the limitation of the inner diameter of the stainless steel, the cathode inserted into the tube is smaller. For some stainless steel tubes with a diameter of millimeters, the cathode with a diameter that is too small cannot be inserted into a stainless steel tube with a length of six meters. And because the diameter is small, the current flow area will be small, and it is impossible to pass a large current. Often, the two ends of the entrance of the stainless steel tube can be electrolytically polished, and the current in the middle of the tube cannot flow, and there is no polishing effect.

The longer the length of the pipe, the greater the contrast. If it is a 12-meter-long pipe, it will be more difficult.

[0007] 3. Low production efficiency: At present, the electrolytic polishing of stainless steel tubes is all done manually. Due to the addition of human factors, only one piece can be processed at a time, and after one piece is processed, its electrode must be disassembled and then Installed on another pipe to be processed, the production efficiency is low, and the labor intensity of the operator is high

Chromic anhydride contains hexavalent chromium, which is one of the six severely prohibited chemicals and is extremely harmful to the human body; and when using glycerin, due to its physical properties, a lot of gas is produced during electrolytic polishing, and bubbles It is also very viscous and not easy to dissipate, which will also affect the polishing effect

Moreover, the pungent smell produced during the electrolytic polishing process also has an impact on the human body and needs to be recycled.

[0010] 6. Low degree of automation: the existing electrolytic polishing equipment, the use of manufacturers in terms of initial investment cost and technical difficulty, all adopt manual operation; the quality is all determined by the operator, skilled workers and unskilled workers products will vary

Moreover, the labor intensity is high, especially the electrolytic polishing liquid is generally an acidic potion, and the direct operation of personnel has a high degree of work risk.

[0011] From the above analysis, it can be seen that the existing electrolytic polishing equipment in stainless steel tubes have "average polishing effect, limited processing size, low production efficiency, influence of gas generated during processing, low degree of automation, and non-environmentally friendly electrolytic polishing fluid". and many other issues

Therefore, the quality processed by the existing domestic stainless steel electrolytic polishing equipment cannot compete with imported stainless steel electrolytic polishing pipes, and cannot form mature products to compete with foreign manufacturers.

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