Types of defects in the SLM process, their causes Professional

Original Title: Types, Causes and Adverse Effects of Defects in SLM Process Defects in SLM process can be divided into defects in powder spreading process and defects in printing process. Defects in powder spreading process include irregular powder layer, and defects in printing process include splash, spheroidization, pores, poor surface quality, cracks, geometric deformation, etc. Dr. Cao Lonffect the next layer of powder, resulting in the next layer of powder being uneven and uneven, and even damaging the scraper. Physical process of interaction between laser molten pool and laser beam In order to keep the metal powder bed from being contaminated by spatter, a high-speed protective gas flow can be used to remove the spatter. However,titanium round bar, excessive airflow will affect the surface quality of the powder layer, and how to optimize the airflow technology has become the direction of manufacturers'continuous efforts. 2. Spheroidization. If the energy is too high, the liquid metal will splash on the unmelted metal powder, which will also lead to spheroidization. Spheroidization will affect the quality of the next layer of powder,titanium seamless tube, affect the surface quality of components, and  to the process parameters. Reasonable printing process and uninterrupted process optimization for material use times are still important conditions to avoid pores. 4. Surface quality With the development of SLM technology, the types of printable materials are more and more abundant, ti6al4v ,titanium filler rod, and the mechanical properties of components have been greatly improved, but the relatively poor surface quality is still one of the main obstacles liproblems of components. At the same time, SLM is forsuch as lack of fusion, pores and so on,titanium sheet grade 5, too thin powder layer will reduce the manufacturing efficiency, therefore, strictly controlling the quality of powder spreading is of great significance to improve the quality of SLM components. Return to Sohu to see more Responsible Editor:. yunchtitanium.com