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Polishing process under 3D printing technology

2024-01-18 16:45

With the rapid development of 3D printing technology, more and more industries are adopting this revolutionary manufacturing method. However, the surface of 3D printed parts often has some roughness and tomographic marks, which require polishing treatment. This article will take you into the shining world and explore the polishing process under 3D printing technology.

1、 The importance of polishing process

1-1. Improve appearance quality
Polishing can effectively remove defects and roughness on the surface of 3D printed parts, making their surface smoother and improving overall appearance quality. This is particularly important for products that require display or interaction with users, as elegant appearance can leave a deep impression on people.
1-2. Improve mechanical performance
The layered structure of 3D printed parts results in obvious tomographic marks on their surface, which can lead to poor mechanical performance of the parts. By polishing, these chromatographic marks can be eliminated, improving the strength, wear resistance, and corrosion resistance of the parts, thereby improving their mechanical properties.
1-3. Promote the application of products
Polishing treatment can not only improve the quality and performance of products, but also enhance their market competitiveness. Products that have undergone fine polishing treatment are more easily accepted and recognized by users, thereby promoting their application and sales.

2、 Traditional polishing methods
2-1. Manual polishing
Manual polishing is a traditional polishing method that involves surface treatment using tools such as sandpaper, grinding wheels, and polishing paste. This method requires experienced operators as the polishing methods vary for different materials. Manual polishing is time-consuming and laborious, and it is difficult to achieve high polishing results.
2-2. Chemical polishing
Chemical polishing is the use of chemical agents to treat 3D printed parts, removing surface roughness and chromatographic marks. This method can be quickly completed and can handle complex shaped parts. However, the selection of chemical agents needs to be cautious to avoid adverse effects on the environment and human health.


3、 Innovative polishing method: laser polishing
With the development of technology, laser polishing has gradually emerged as an innovative polishing method. Laser polishing utilizes high-energy laser beams to instantly melt the surface layer, eliminate surface defects, and achieve fast, efficient, and non-contact polishing treatment.
3-1. Efficient and fast
Laser polishing has a fast speed and can complete polishing tasks in a short period of time. The high-energy laser beam is focused on a small area, causing the material surface to instantly melt and re solidify, thereby eliminating surface roughness and tomographic traces.
3-2. Contactless processing
Laser polishing is a non-contact processing method that does not cause physical damage or deformation to the parts. Compared to traditional mechanical polishing, laser polishing can better maintain the shape and dimensional accuracy of parts.
3-3. Flexibility and diversity
Laser polishing can be adjusted according to the requirements of different materials and parts, achieving different degrees of polishing effects. By adjusting parameters such as laser power, scanning speed, and scanning mode, a polishing effect from high gloss to semi brightness can be achieved.


4、 Challenges and Prospects of Laser Polishing
4-1. Technical challenges
Laser polishing technology is still in its early stages of development and faces many technical challenges. Further research and exploration are needed on how to achieve adaptability to different materials, control consistency in polishing quality, and overcome thermal effects during laser processing.
4-2. Application prospects
Although laser polishing technology still faces some challenges, its application prospects in fields such as aerospace, automotive industry, and medical devices are enormous. With the continuous progress and maturity of laser technology, laser polishing is expected to become an important part of 3D printing post-processing.


The widespread application of printing technology has brought enormous opportunities and challenges to various industries. As an important part of 3D printing post-processing, polishing can improve the appearance quality and mechanical performance of products, promote their application and sales. Although traditional polishing methods have rich experience, their efficiency and effectiveness are limited. As an innovative technology, laser polishing has the characteristics of high efficiency, fast speed, non-contact processing, and flexibility and diversity. Although laser polishing technology still faces some challenges, its application prospects in various industries are broad. I believe that with the continuous advancement of technology, laser polishing will shine in the field of 3D printing, bringing more opportunities and breakthroughs to the manufacturing industry. The shining future has arrived!