GB/T 37463-2019 in English

Standard Formulation Background and Technology Evolution Analysis

Additive Manufacturing (AM) technology has developed rapidly in recent years, especially the powder bed fusion process has been increasingly widely used in plastic material processing. With the maturity of technology, the requirements for product quality and consistency are constantly increasing. The formulation of the GB/T 37463—2019 standard fills the gap in domestic specifications in this field and provides manufacturers with clear technical guidance and quality control basis.

Raw Materials and Powder Preparation

According to the standard requirements, the original powder and used powder used in the powder bed fusion process of plastic materials must meet specific quality and technical indicators. The following are the key points:
1. The original powder must have consistent composition, average particle size and rheological properties.
2. The used powder must be sieved before mixing to ensure that foreign matter and large particles are effectively removed.
3. The preparation of powder materials must be fully uniform, and batch information must be recorded for traceability.

Forming process and quality control

In actual production, the powder bed fusion process involves several key steps: additive manufacturing equipment calibration, material mixing, forming parameter setting and post-processing. The standard particularly emphasizes:

• Calibration parts: used to adjust equipment processing errors to ensure forming accuracy.
• Forming layout: Reasonably arrange part models to maximize the use of forming area and avoid warping.
• Post-processing methods: including physical treatments such as drilling and grinding and chemical treatments such as surface spraying.

Implementation suggestions and application cases

In order to ensure the effective implementation of the standard, the following suggestions are for reference:

1. Equipment calibration: Regularly perform equipment parameter calibration to ensure forming accuracy.
2. Powder management: Establish a complete powder batch management system to avoid cross contamination.
3. Quality traceability: Achieve full traceability of raw materials and finished products through a unique identification system.