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Eliminación de lubricantes de proceso en superficies internas y externas de tuberías de acero resistente a la corrosión mediante técnicas de limpieza electroquímica y flujo turbulento en soluciones poco ácidas


Oferta Tecnológica
Una empresa rusa especializada en investigación científica en el sector metalúrgico ha desarrollado una tecnología para eliminar lubricantes de proceso en superficies laminadas mediante un tratamiento de pulido electroquímico y flujo turbulento. Esta tecnología se aplica en el acabado de tuberías pesadas. La tecnología es una alternativa a los tratamientos actuales de acabado que se aplican en tuberías de acero inoxidable, que consumen mucha energía y recursos debido al uso de disolventes orgánicos peligrosos. Se buscan fabricantes de tuberías laminadas con el fin de establecer acuerdos comerciales con asistencia técnica.


Removal of process lubricants from both internal and external surfaces of corrosion-resistant steel pipes by means of a vortex-jet and electrochemical cleaning techniques in weak-acid solutions
A company based in Chelyabinsk specializes in scientific research in metallurgy. The company developed a technology to remove process lubricants from metal-roll surfaces by means of electrochemical polishing and vortex-jet treatment. The technology can be applied for finishing heavy-duty pipes. The company is looking for commercial agreements with technical assistance with manufacturers of rolled pipes.
Some industries, including nuclear power, impose strict requirements on the quality of surfaces of pipes they use. The existing finishing treatment techniques for pipes made from stainless steels are both power-consuming and resource-consuming, since they use hazardous organic solvents.
The technology developers offer an electrochemical degreasing technique in orthophosphoric acid solutions of weak concentrations. In the course of cathode-anode polarization of a product under treatment, due to a considerable polarization resistance, hydrogen and oxygen effervescence occurs over the entire surface. While detaching, the bubbles carry the lubricant away, thus cleaning the surface Simultaneously, unsolvable lubricant oxidation products are formed that precipitate and finest metallic and nonmetallic particles are removed from the product surface. After this treatment, the surface of metallic product becomes completely free of process lubricants, with no residual impurities left. During the treatment, the product is passed through a toroidal chamber fitted with an outlet nozzle; in the chamber, a rotating flow of a cleaning liquid is arranged, and flow turbulence is formed due to annular grooves on the internal surface of the nozzle. In order to remove technological lubricants from both internal and external surfaces of pipes (when greasing is heavy and exceeds 100 mg/m2, etc.) and to enhance the cleaning, electrochemical cleaning may be combined with vortex-jet treatment. The technology can also be utilized to clean microtapes and microwires.
The company has successfully implemented the technology at a number of industrial enterprises in Russia.
Advantages and Innovations:
Unlike existing methods, the offered technique, in addition to effects like cavitation, utilizes the treatment by a gas-liquid jet counterflow with an all-around access of the treatment medium to a cylindrical body surface. The gas-liquid jet has no dangerous, environmentally unfriendly gas mixtures (e.g., hydrogen chloride, ammonia, etc). The technology, as compared to analogs, reduces wash water consumption in 5 to 10 times, reduces electric power consumption in 2÷3 times, increases the product yield, and enhances the surface cleaning.
Stage of Development:
Already on the market
Patents granted
CommeR Statunts Regarding IPR Status:
Russia, 2012

Partner sought

Type and Role of Partner Sought:
Manufacturer of pipes made of corrosion-resistant steels.

Tasks to be performed:
1. Provision of quality requirements/ specification for manufactured pipes;
2. Implementation of the offered equipment for finishing removal of process lubricants from external and internal surfaces of corrosion- resistant pipes manufactured by the partner.


Type and Size of Client:
Industry SME 11-49
Already Engaged in Trans-National Cooperation:
Languages Spoken:


Technology Keywords:
02002001 Limpieza (chorro de arena, cepillado)
03001001 Tecnologías de limpieza
02002015 Tratamiento superficial (pintado, galvanizado, pulido, CVD...)