Renishaw unveils TEMPUS technology and RenAM Ultra System, transforming metal additive manufacturing
TEMPUS technology optimizes additive manufacturing by allowing the laser to fire during recoater movement, saving up to nine seconds per layer. Synchronized with the recoater, lasers track its ...
[PDF] SUPPORT-FREE METAL ADDITIVE MANUFACTURING: A …
Abstract Especially in the Laser Powder Bed Fusion (L-PBF) technology for metals, current manufacturing systems require the use of support structure to withstand recoater forces and lower thermal induced stresses. These support structures set limitations on the design freedom and affect the surface quality, part cost and lead-time in an …
a mounting apparatus for a recoater rail of an additive manufacturing machine includes: a bracket including: a body having first and second ends; first and second flanges extending from the first and second ends respectively, the body and flanges cooperatively forming a C-shape; a first jack screw mounted to the first flange, the first jack screw extending parallel …
Smart recoating: A digital twin framework for optimisation and …
We present a new framework for learning novel operational strategies and dynamically controlling the layering process in metal additive manufacturing. Metal additive manufacturing technologies such as powder bed fusion (PBF) are generally …
Recoater crashes during powder bed fusion of metal with laser …
Progress in Additive Manufacturing - In powder bed fusion of metal with laser beam (PBF-LB/M), repetitive melting and solidification of newly added layers lead …
Benchmarking build simulation software for laser powder bed …
Additive manufacturing (AM) has been traditionally used for prototyping in various industries but has more recently been adopted for manufacturing production parts. Increasing adoption of this technology has opened up potential applications for production in various industries such as aerospace, medical, tooling, and oil and gas, to …
Powder spreading in laser-powder bed fusion process
The powder spreading inner-step of the LPBF process is dominated by powder feedstock characteristics, such as PSD (µm) and surface energy (mJ/m 2 ), and …
The intelligent recoater: A new solution for in-situ monitoring of …
Introduction. One of the most widespread additive manufacturing (AM) technologies is powder bed fusion, especially its laser-based version (L-PBF). Some of …
How Metal Additive Manufacturing Recoaters Affect Build Quality
To find out if a different combination of additive manufacturing recoater and metal powder has any impact on the end quality of a build, we chose three …
For a long time, additive manufacturing (AM) has been seen as the technology that enables design freedom. More than 30 years after the technology was invented, many …
Investigation of the fluid flow during the recoating process in …
This paper aims to explore the fluid flow in the stereolithography process during the recoating step. The understanding of the flow dynamics can be used as an …
New Renishaw technology cuts additive manufacturing build …
Over the cycle time of the build, the time saving can cut the build time by up to 50%. Crucially, there is no reduction in part quality. With TEMPUS technology, as the recoater spreads a layer of powder, the lasers "follow" the recoater, melting the powder being spread before the recoater completes its stroke. When the recoater goes back to ...
Exploring the fabrication limits of thin-wall structures in a laser powder bed fusion process …
Although additive manufacturing (AM) is becoming increasingly popular for various applications, few studies have addressed design and potential problems in thin wall fabrication for the laser powder bed fusion (LPBF) process. In the LPBF process, rapid cooling induces thermal shrinkage, which in turn, results in high residual stress and …
How Renishaw''s quiet innovation is tackling additive manufacturing…
While the engineering company found its roots in metrology, its orange and black display in Frankfurt is very much all about its RenAM 500 metal additive manufacturing family. The RenAM 500Q Ultra is the latest edition, a four-laser machine which comes equipped with TEMPUS technology as standard, though existing RenAM …
The effect of recoater geometry and speed on granular convection and size segregation …
In metal additive manufacturing (AM), powder bed fusion technologies such as selective laser melting and binder jetting rely on the spreading of fine metal powder to build up the layers of a part. This work studies the complex interaction between metal powder particles and the recoater.
Unlocking New In-Situ Defect Detection Capabilities in Additive Manufacturing with Machine Learning and a Recoater …
Additive manufacturing (AM) has the potential to revolutionize the way products are designed and produced in a wide range of industries. However, ensuring the quality and reliability of AM parts remains a challenge, as defects can occur during the building process.
What is Powder Bed Fusion 3D Printing? | Additive …
Powder bed fusion (PBF) is a 3D printing method that joins powdered material point by point using an energy source, typically a laser beam or an electron beam. Powder bed fusion is one of the most …
and a hard recoater blade (Wohlfart, 2020). Other tests conducted by EOS include the manufacture of 100 mm discs of the titanium alloy Ti6Al4V also on the M290 with a hard recoater blade. The outline of the discs was supported by a 1 mm contour support
On the development of powder spreadability metrics and feedstock requirements for powder bed fusion additive manufacturing …
as the recoating speed and the recoater blade material were shown to also influence the spread quality. Previous article in issue Next article in issue Keywords Additive manufacturing Powder bed fusion Feedstock …
Powder spreading in laser-powder bed fusion process
Laser-Powder Bed Fusion (LPBF) has been extensively utilized by a broad range of manufacturing industries in recent years. Fabricating parts with high mechanical properties and smooth surfaces has motivated such industries and academic communities to study different aspects and steps of the LPBF process, including powder spreading, laser …
Metal 3D Printers: AddUp''s Innovative Metal Additive …
With more than 20 years experience in metal Additive Manufacturing, our machines have been designed to master detail and optimize productivity. Reliable. Repeatable. Industrial. AddUp machines are built to do serial …
What is SLM Additive Manufacturing? | Additive Manufacturing …
Table of Contents. Selective laser melting (SLM), also known as direct metal laser sintering (DMLS) or laser powder bed fusion (LPBF), is a powder bed fusion technology used in additive manufacturing. SLM uses a high-powered laser to fuse and melt metallic powders together to produce fully dense 3D objects layer by layer.
Prediction of recoater crash in laser powder bed fusion additive …
The objective of this work is to predict a type of thermal-induced process failure called recoater crash that occurs frequently during laser powder bed fusion …
The powder additive manufacturing apparatus 1 includes, as its main components, a recoater 10, a main-body block 20, a powder supply apparatus 30, and a laser oscillation device 40. Note that in FIG.
Monitoring of the powder bed quality in metal additive manufacturing …
Experiments #1 and #2 are designed to create the inhomogeneities scattered powder, protruding part, and ripples by making the recoater collide with the manufactured samples (cf. Fig. 4, a). Two samples have a square 10 × 10 mm 2 cross section that is twisted by 90° across the 10 mm build height, one ending in a 10 × 10 mm …
Investigation of the fluid flow during the recoating process in additive manufacturing …
Investigation of the fluid flow during the recoating process in additive manufacturing - Author: Andrei Kozhevnikov, Rudie P.J. Kunnen, Gregor E. van Baars, Herman J.H. Clercx This paper aims to explore the fluid flow in the stereolithography process during the recoating step.
Achieving Design Freedom with Velo3D''s Non-Contact Recoater
Velo3D''s contact-free recoater process helps free engineers from the constraints of conventional LPBF rules by allowing them to evade traditional AM design limitations. These limitations hinder innovation through restrictive design for additive manufacturing (DfAM) rules, which prioritize manufacturability over optimization.
Flowability of polymer powders at elevated temperatures for additive manufacturing …
Abstract. The flowability and spreadability of three different polymer powders for selective laser sintering were investigated by analysing the powder at different temperatures. These measurements were performed using both the Revolution Powder Analyzer and the Schulze Ring Shear Tester. The latter device was modified with a self …
Use-Cases of different Recoater Configurations for Direct Metal …
When it comes to different options of recoating blades, there has always been a debate in the Additive Manufacturing (AM) community whether to use a soft or a hard recoating solution. Here, I want to give an overview of different use cases and the advantages as well as disadvantages of soft and hard recoating.
A review of powder deposition in additive manufacturing by …
In Powder Bed Additive Manufacturing processes, alternatively termed Powder Bed Fusion (PBF) processes, a 3-dimensional part is built sequentially, layer after layer. First, a thin layer of powder is applied onto the top surface of a downwards moving fabrication piston. The thickness of this layer typically varies between 30 and 150 μm.
An instrument for in situ characterization of powder spreading dynamics in powder-bed-based additive manufacturing …
During a laser powder bed fusion (LPBF) additive manufacturing process, powders are spread over a substrate into a thin powder layer, which is then selectively melted by a laser according to a computer aided design (CAD) model. 1–3 The characterization of the powder behavior during the spreading process is important for …
Topology Optimization for additive manufacturing with …
In this paper, Additive Manufacturing simulations are coupled with Topology Optimization in order to generate designs that are not susceptible to failure associated with distortion. Two possible causes of failure are accounted for: recoater collision and global distortion of the product.
