What is two-phase flow magnetic polishing ？

Two-phase flow magnetic polishing is an important surface treatment technology, that utilizes magnetic fluid to to generate magnetic and shear forces on metal surfaces under an external magnetic field, achieving a new type of polishing and finishing technology widely used in modern industry. It uses the magnetic field as the driving force and control method, in the polishing process will not produce wear particles, to avoid the traditional mechanical polishing brought about by the secondary pollution and damage to the surface of metal materials, improve the surface quality and enhance the corrosion resistance. This article will focus on the characteristics and advantages of two-phase flow magnetic polishing, as well as its current status and prospects for application in the field of bottles.

Ⅰ.What is two-phase flow magnetic polishing?

Two-phase flow magnetic polishing is a new polishing technology integrating magnetism and hydrodynamics, which is based on the moving behavior of charged particles under the joint action of magnetic field force and hydrodynamic force, thus realizing the optimization of the treatment of microscopic unevenness on the surface of nanoscale materials. The main principle is that by mixing the magnetic beads in the abrasive material such as alumina, the magnetic beads are allowed to move along the trajectory of the abrasive material such as alumina through the action of applied magnetic field, so that the surface defects are eliminated without altering the roughness, and the surface is made smoother and more homogeneous.

The mechanism of two-phase flow magnetic polishing technology mainly includes three aspects: one is the role of magnetic force; the second is the fluid mechanics; the third is the interaction between the particles and the material surface. Among them, the magnetic force mainly refers to the interaction force between particles guided by the magnetic field. Fluid mechanics mainly refers to a series of physical effects caused by liquid flow, such as high-speed repeated impact, friction and ion exchange. The interaction between the particles and the material surface is the result of intermolecular forces and surface chemical reactions between the surface roughness and particle diameter of the material, and its effects are adjusted to optimize the micro-roughness of the surface.

The two-phase flow magnetic polishing has the advantages of high efficiency, precision, non-destructive and contactless, but at the same time there are some limitations, such as can only be applied to specific materials, and difficulty in parameter adjustment. In recent years, this technology has been widely used and researched in the fields of material processing and surface treatment.

Ⅱ.What are the advantages of two-phase flow magnetic polishing?

The characteristics and advantages of two-phase flow magnetic polishing are manifold, mainly reflected in the following aspects:

1. High efficiency and precision: The speed of two-phase flow magnetic polishing is much faster than traditional mechanical polishing, and the use of magnetic fluid ultra-precision polishing methods, can be highly efficient, fine, non-destructive surface microprocessing, can be realized in the millimeter above the surface of the object to achieve the effect of sub-micron and micron or even sub-nanometer polishing, so that the surface of the material in a very short period of time to become smoother and flatter.

2. Easy to control: Two-phase flow magnetic polishing can control the effect of surface treatment by determining different parameters, such as magnetic field strength, processing time, etc., so the surface quality of the object can be adjusted according to the needs. At the same time, the two-phase flow magnetic polishing operation is simple and can reduce costs.

3. Environmental protection: Traditional mechanical polishing technology produces waste that has a negative impact on the environment, while the two-phase flow magnetic polishing process does not require the use of abrasive particles and produces very little waste, eliminating the pollution caused by abrasive materials to the environment, while also reducing the hazards to the operator and does not have a negative impact on the environment. Since the two-phase flow magnetic polishing technology does not require too many consumables, the laboratory and production line equipment can also achieve the highest utilization of resources in terms of space and finance.

4. Non-contact processing: Two-phase flow magnetic polishing can achieve non-contact processing, to avoid direct physical contact on the material properties of damage.

Ⅲ.What are the main applications of two-phase flow magnetic polishing?

The application of two-phase flow magnetic polishing technology is very wide, mainly used in precision machining, optical instruments, aerospace, semiconductor, automotive, glass products, nuclear technology and other fields.

1. Precision mechanical processing: Two-phase flow magnetic polishing can be used for the surface polishing and treatment of precision materials and parts, such as metals, piezoelectric ceramics, cemented carbide and so on. At the same time, in the manufacturing process,  two-phase flow magnetic polishing can also reduce the waste produced by mechanical processing, reduce the damage to the abrasive parts, improve the overall performance of the workpiece, and extend the service life.

2. Optical instruments: Two-phase flow magnetic polishing can be used to improve the surface smoothness and flatness of optical materials, reducing surface defects and contamination, thereby improving the resolution and precision of optical instruments.

3. Aerospace: In the aviation and aerospace industry, two-phase flow magnetic polishing technology can be used to produce metal parts for airplanes, rocket components and other metal parts, to improve the surface smoothness and corrosion resistance, to ensure the performance and service life of the parts.

4. Semiconductors: Semiconductor manufacturing requires a highly clean environment, and two-phase flow magnetic polishing technology can be used to improve the surface smoothness and flatness of semiconductor devices without producing secondary pollution.

5. Automotive: Two-phase flow magnetic polishing technology can be used for surface treatment of automotive parts, such as engine components, exhaust systems, brake systems, etc., to improve the surface smoothness and corrosion resistance, and extend the service life of automotive parts.

6. Glass products: Two-phase flow magnetic polishing can be used for the surface treatment of high-precision glass products, such as optical glass, precision instrument glass, watch dials, etc., to improve their surface smoothness and flatness.

7. Nuclear technology: In the field of nuclear technology, two-phase flow magnetic polishing technology can be used for the treatment of components of nuclear reactors, such as the surface of fuel rods, to improve their thermal conductivity and corrosion resistance.

In summary, two-phase flow magnetic polishing technology is widely used in many fields because of its simple operation, low cost, environmental protection, high efficiency and high precision. With the continuous development of industrial technology, the application of two-phase flow magnetic polishing technology in the future will be more extensive and important, and become one of the important tools for instrument surface treatment.

Ⅳ. How is the two-phase flow magnetic polishing applied in the field of bottles?

Bottles are indispensable items in the family, and their surface quality is very important to affect their visual effect and practicality. Traditional mechanical polishing methods can not ensure the smoothness and uniformity of the surface treatment, and at the same time, it is easy to cause minor damage to the surface, while two-phase flow magnetic polishing provides a solution to these problems thanks to its high efficiency, high precision, and environmental characteristics, enabling a smoother and more uniform surface on bottles. Therefore, it is gradually replacing traditional mechanical polishing methods and manual polishing methods.

Generally speaking, the surface treatment of bottles mainly includes two steps of polishing and grinding. In the two-phase flow magnetic polishing technology, firstly, the bottles are placed in the magnetic barrel, mixed with magnetic beads and abrasive such as alumina, and then soaked therein. Subsequently, by applying a magnetic field, the magnetic beads move along the trajectory of the abrasive material, such as aluminum oxide, to continuously abrade the surface and remove dirt and small defects on the surface of the bottles. The whole process does not require abrasive particles and does not produce dust, harmful gases or waste water, which is in line with environmental requirements.

The application of two-phase flow magnetic polishing technology in the field of bottles mainly focused on the production and manufacturing of high-end bottles, such as those made by ceramic enterprises. In these production processes, the two-phase flow magnetic polishing technology is widely used to improve the smoothness and uniformity of the surface of bottles, making them more beautiful and practical. At present, the two-phase flow magnetic polishing equipments of professional manufacturers at home and abroad have begun to be widely used in the field of bottles production. For example, in Japan, some famous ceramic manufacturing enterprises, such as KUTANI YAKI series produced by KOGEI JAPAN, have begun to apply the two-phase flow magnetic polishing technology to the surface treatment of ceramics.

In the future, with the continuous development of industrial technology, the application of two-phase flow magnetic polishing technology in the field of bottles will become more and more extensive. At the same time, with the increasing prominence of the problem of secondary pollution, the environmental protection requirements will continue to improve, two-phase flow magnetic polishing technology will become one of the important means of environmental protection treatment in the future.

However, in the application process, the technology also has some limitations. First, the use of such technology requires magnetic particles and stable magnetic fields, so only some specific materials can be applied. Secondly, many factors, such as changes in the type and concentration of the particles, as well as the magnetic field and the flow state of the liquid, will affect the surface processing effect of the two-phase flow magnetic polishing technology, so the adjustment of the corresponding parameters has some difficulties.

In summary, the two-phase flow magnetic polishing technology has gradually become a new type of surface processing means, which has the advantages of high efficiency, fine precision, non-destructive and non-contact, but at the same time there are some limitations that require further in-depth research and improvement. In future research, emphasis should be placed on studying the significance of improving material microstructures and surface properties, exploring the impact of more particle types and magnetic field parameters on surface microprocessing, and developing more efficient and stable equipment and technology for wide application in various industrial production and scientific research fields.In short, the future of two-phase flow magnetic polishing technology still holds broad development space and potential.