Sand blasting technology for surface treatment of titanium alloy forgings
As a lightweight, high-strength metal material, titanium alloy forgings are widely evaluated in aerospace, medical devices and other fields. In order to improve its surface quality and increase its aesthetics, sandblasting technology has become a common surface treatment method. This article will introduce the sandblasting technical parameters, process flow and application fields in the surface treatment of titanium alloy forgings.
Sandblasting technical parameters
Sandblasting is a surface treatment method that uses high-speed wind pressure to spray granular materials onto the surface of the workpiece to achieve the purpose of reaching the oxide layer, cleaning it, and increasing surface roughness. During the sandblasting process of titanium alloy forgings, the following factors and technical parameters need to be considered:
Abrasive Selection: Choosing the right abrasive is critical to achieving the desired surface finish. Commonly used abrasives include alumina, glass particles, etc. The choice of hardness and shape of the abrasive will affect the final surface quality.
Compressed air pressure: Sandblasting equipment pushes abrasive particles through high-speed jets of compressed air. Adjusting the air pressure can control the jet and intensity of abrasives, thereby affecting the surface roughness and cleaning effect.
Sandblasting distance: The distance between the sandblasting gun and the workpiece surface directly affects the spray angle and intensity of abrasive particles. Proper sandblasting distance can ensure uniform surface treatment.
Sandblasting time: Sandblasting time depends on the size, shape and desired surface finish of the workpiece. Blasting times that are too long or too short can result in unsatisfactory surface quality.
Sandblasting process
Preparation work: Before sandblasting, the surface of titanium alloy forgings needs to be cleaned to remove oil stains, oxide layers, etc. Make sure the surface is dry to facilitate the application of abrasive particles.
Abrasive injection: Inject the selected abrasive into the hopper of the sandblasting equipment to ensure that the abrasive is clean and sufficient.
Adjust parameters: According to the specific conditions of the workpiece, adjust the compressed air pressure, sandblasting distance and sandblasting time of the sandblasting equipment.
Sandblasting operation: Use sandblasting equipment to sandblast titanium alloy forgings to ensure the uniformity and consistency of sandblasting.
Inspection and Cleaning: After sandblasting is completed, inspect the surface effect and, if necessary, perform secondary sandblasting or other treatments. Cleaning is also important to prevent abrasive retention from affecting the next step.
The purpose of sandblasting
Improve surface roughness: Sandblasting can produce a certain roughness on the surface of titanium alloy forgings, which is beneficial to the maintenance of coatings and lubricants.
Clean surface defects: Sandblasting can effectively remove the oxide layer, rust and other films on the surface, making the surface cleaner.
Increase the smearing force: The surface after sandblasting has a certain roughness, which can increase the smearing force of the coating or lubricating oil and improve the service life of the workpiece.
Aesthetic treatment: Sandblasting can give titanium alloy forgings unique texture and surface, improve their appearance, and is suitable for some high-demand products, such as jewelry, watches, etc.
In general, sandblasting technology, as a surface treatment method, provides many advantages for titanium alloy forgings, thus widely focusing on various fields, so that the performance and appearance of titanium alloy forgings can be better improved.
