Ion Beam Polishing
Principle: Ion beam polishing is a high-precision surface treatment technique. It utilizes high-energy ion beams (such as argon ion beams) to bombard the surface of carbon steel. The ion beams collide with the atoms on the carbon steel surface and sputter away the surface atoms one by one. Since the ion beam can precisely control the energy, beam current density and scanning path, it can selectively remove the tiny protrusions on the surface, thus reducing the surface roughness. This method has extremely high processing precision and can achieve a surface smoothness at the nanometer level.

Operation Method: Professional ion beam equipment is required. Place the carbon steel component in a vacuum chamber and evacuate it to an appropriate vacuum degree (generally between 10⁻³ and 10⁻⁶ Pa). Start the ion source to generate the ion beam. Adjust the energy of the ion beam (usually ranging from several hundred electron volts to several thousand electron volts), the beam current density (generally ranging from several microamperes per square centimeter to dozens of microamperes per square centimeter) and the scanning speed (with a scanning range of several micrometers to dozens of micrometers per second) according to the initial surface roughness of the carbon steel and the desired final smoothness. During the polishing process, observe the surface changes in real time through monitoring equipment to ensure that the desired effect of reducing the roughness is achieved.

 

Magnetorheological Polishing
Principle: Magnetorheological polishing is carried out based on the characteristics of magnetorheological fluids. Magnetorheological fluid is a kind of intelligent fluid. Under the action of a magnetic field, its rheological properties will change from a liquid state to a semi-solid state. During the polishing process, the magnetorheological fluid is placed between the polishing tool and the carbon steel surface. When a magnetic field is applied, the magnetorheological fluid forms high shear stress areas at the tiny protrusions on the carbon steel surface. The hardness of the magnetorheological fluid in these areas increases, and it performs a grinding-like action on the protrusions on the surface to remove them, thus reducing the surface roughness.

 

 

 

 

 

 

The high strength hull structure steel is divided into A, D, E and F4 according to its minimum yield strength, and each strength grade is divided according to its impact toughness. The yield strength of A32, D32, E32, F32 is not less than 315N / mm ^ 2, tensile strength is 440 ~ 570N / mm ^ 2, and A, D, E and F respectively represent their respective

The tensile strength of A36, D36, E36, F36 is not less than 355N / mm ^ 2, the tensile strength is 490 ~ 620N / mm ^ 2, A, D, E, F, respectively, that each can be 0 °,

 

 

Ultrasonic Polishing
Principle: Ultrasonic polishing makes use of the energy of ultrasonic vibrations. High-frequency ultrasonic vibrations are applied to the polishing tool (such as a polishing head connected to an ultrasonic vibrator), and polishing abrasives (such as boron carbide abrasives) are added between the polishing head and the carbon steel surface. The ultrasonic vibrations make the abrasives generate high-frequency impact and grinding actions on the carbon steel surface. Since the ultrasonic energy can be concentrated on the microscopic protrusions on the surface, these parts are subjected to stronger impact and grinding actions and are preferentially removed, thus achieving the purpose of reducing the surface roughness.

Operation Method: Select an ultrasonic generator with an appropriate frequency (generally between 20 and 100 kHz) and a polishing head that matches it. Mix the polishing abrasives with an appropriate liquid medium (such as an aqueous polishing liquid) to form a polishing slurry. Place the carbon steel component on the workbench and make the polishing head with the polishing abrasives in contact with the carbon steel surface. Turn on the ultrasonic generator and adjust the ultrasonic power (generally ranging from dozens of watts to hundreds of watts) and the polishing time (usually ranging from several minutes to dozens of minutes) according to the surface roughness and material hardness of the carbon steel. During the polishing process, ensure good contact between the polishing head and the carbon steel surface and replenish the polishing abrasives in a timely manner to maintain the polishing effect. After polishing, clean the residual abrasives and liquid on the carbon steel surface.

 

 

 

 

 

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