3D Printing Technology and Its Development

In recent years, 3D printing technology has developed rapidly, with applications spanning traditional manufacturing, aerospace, and medical fields. Mainstream technologies include Binder Jetting, DED, and Power Bed Fusion. This paper discusses the principles, characteristics, and application cases of these three technologies. For example, Binder Jetting can be used to form silk powder combined with a binder, DED can achieve rapid manufacturing and repair of large metal components, and Power Bed Fusion can generate internal lattice structures that cannot be achieved with traditional processes. Additionally, the paper introduces applications of 3D printing in medical surgery planning, aerospace component lightweighting, and industrial material waste reduction. It highlights challenges such as quality stability, high certification costs, and insufficient material strength, emphasizing the trend toward transitioning from rapid prototyping to full-scale manufacturing technology. It concludes that as precision and material performance improve, 3D printing technology will leverage material innovation and process optimization to demonstrate breakthrough potential beyond traditional manufacturing across multiple fields, establishing a core position in high-end manufacturing and personalized applications.