Process application of Kejia vacuum furnace in 3D printing additive manufacturing industry
The 3D printing additive manufacturing industry has high requirements for the accuracy and adaptability of equipment. Kejia vacuum furnace plays an important role in this industry with its own characteristics.
1. Application of metal powder sintering
In metal 3D printing, Kejia vacuum furnace can sinter the printed metal blank. There are microscopic defects such as pores inside the metal blank after 3D printing. By sintering at high temperature in a vacuum environment, its density can be significantly improved. The vacuum environment can prevent the metal from oxidizing at high temperature and ensure the sintering quality. For example, when printing titanium alloy parts, Kejia vacuum furnace can accurately control the temperature in a suitable range, so that atomic diffusion and rearrangement occur between titanium alloy powder particles, the pores gradually decrease, and finally form a dense metal structure, improve the mechanical properties of parts, and meet the strict requirements of high-end fields such as aerospace for the strength and reliability of parts.
2. Stress relief treatment
During the 3D printing process, due to the accumulation of materials layer by layer, thermal stress is easily generated inside, which may cause deformation or even cracking of the printed parts. Kejia vacuum furnace can perform stress relief annealing treatment. Place the printed part in a vacuum furnace, slowly heat it up to an appropriate temperature and keep it warm for a certain period of time, so that the atoms inside the metal can obtain enough energy to rearrange and release internal stress. Taking stainless steel 3D printed parts as an example, after stress relief treatment in the Kejia vacuum furnace, the dimensional stability of the printed parts is greatly improved, and the risk of deformation during subsequent processing and use is significantly reduced, which effectively improves the product qualification rate.
3, post-processing strengthening
For some 3D printing materials that require special properties, such as alloys with specific magnetic or electrical properties, the Kejia vacuum furnace can cooperate with subsequent heat treatment processes to strengthen these properties. In a vacuum or specific atmosphere environment, by precisely controlling the heating temperature, time and cooling rate, the microstructure of the alloy is adjusted to optimize its magnetic properties, conductivity and other properties. For example, for soft magnetic alloy 3D printed parts used in electronic devices, after appropriate heat treatment in the Kejia vacuum furnace, their magnetic permeability can be significantly improved, hysteresis loss can be reduced, and the demand for high-performance magnetic materials for electronic devices can be better met.
4, compatible with various 3D printing technologies
The Kejia vacuum furnace can be well adapted to a variety of common 3D printing technologies, such as selective laser melting (SLM) and electron beam melting (EBM). Whether it is the SLM technology that uses lasers to melt metal powder layer by layer, or the EBM technology that uses electron beams to melt and form in a vacuum environment, the printed workpiece can be subsequently processed in the Kejia vacuum furnace. This provides a unified and effective post-processing solution for products produced by different 3D printing processes, and broadens the application scope of 3D printing additive manufacturing technology in different fields.
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