2.2Directed energy deposition (DED) technique Using an intricate printing method calleddirected energy deposition, old components can often be repaired or given a material boost [16]. The structure can be managed greatly during energy deposition, producing high-quality objects. Although the nozzle isn...
所谓直接能量沉积3D打印-DED技术(Direct energy deposition),是指由激光在沉积区域产生熔池并高速移动,材料以粉末或丝状直接送入高温熔区,熔化后逐层积的一种激光直接能量沉积增材制造技术。该技术囊括激光、等离子、电子束几种不同的热源,材料包括粉末或丝状两种主要的形态。旗下技术类型可分为LENS激光工程网状透镜(La...
所谓直接能量沉积3D打印-DED技术(Direct energy deposition),是指由激光在沉积区域产生熔池并高速移动,材料以粉末或丝状直接送入高温熔区,熔化后逐层积的一种激光直接能量沉积增材制造技术。该技术囊括激光、等离子、电子束几种不同的热源,材料包括粉末或丝状两种主要的形态。旗下技术类型可分为LENS激光工程网状透镜(La...
This study presents a comprehensive comparison of various process parameters employed in Direct Energy Deposition (DED) using Laser Beam (LB) and Coaxial Wire (CW) techniques for Ti-6Al-4V (DED-LB/CW/Ti-6Al-4V). The main objective is to achieve flawless parts following a zero-defect ...
aThe schematic diagram of “two-step” synthesis of graphene from CO2.bCell voltages at a constant current density of 30 mA cm−2in pneumatic-trough-based cell and H-type cell with/without Nafion 117 membrane. The area of the electrode is ~1 cm2. The “overflow” represents the...
Moreover, by plugging the solution properties and process parameters into our assembly model (Supplementary Table 3), we established a numerical prediction diagram for the formation of 2D nano-nets. The critical formation thresholds for jets and droplets using various substrates were calculated, and ...
The EDS test diagram of the cross-section in Figure 5c shows a similar phenomenon to that in Figure 5b, which confirms that the original structure of PI was destroyed, photothermal effect will occur on the surface of polyimide film after laser irradiation, and C-H, C-O, C=O and C-N ...
Direct energy deposition (DED) is a common metal additive manufacturing process. In the direct energy deposition process focused thermal energy is used to fuse metal materials by melting as they are being deposited. Focused thermal energy means that an energy source such as a high-power laser, ...
所谓直接能量沉积3D打印-DED技术(Direct energy deposition),是指由激光在沉积区域产生熔池并高速移动,材料以粉末或丝状直接送入高温熔区,熔化后逐层积的一种激光直接能量沉积增材制造技术。该技术囊括激光、等离子、电子束几种不同的热源,材料包括粉末或丝状两种主要的形态。旗下技术类型可分为LENS激光工程网状透镜(La...
Fig. 1. The schematic diagram of coaxial powder system and preplaced powder system [34,35]. 2.2 Process simulation analysis LC is a process of interaction between laser, cladding material and substrate, so the temperature, stress and flow field of the melt pool under different process conditions...