surface finishing
Electro-Chemical Polishing: a Technique for Surface Improvements after Laser Milling
T Dobrev, D T Pham and S S Dimov
Manufacturing Engineering Centre, Cardiff University, Cardiff, CF24 3AA, UK
Abstract
Electro-chemical polishing is a process of improving micro smoothness, micro topology, and material brightness by anodic dissolving of the substrate in an electrolyte with an external source of electricity. The resulting surface improvements depend on the uniformity of the material microstructure, the lack of surface inclusions, and the consistency of the surface finish all over the target area. In contrast, laser milled structures are mostly concave features; their roughness is usually higher than that achieved on the other surfaces of the component, and also there is a significant presence of foreign or recast particles on them. Thus, it is important to investigate systematically the effects of electro-chemical polishing on microstructures machined by laser milling.
The paper discusses the effects of electro-chemical polishing on the surface finish of laser milled features. Although ECP displayed some limitations when polishing micro features, it still managed to achieve almost 30% improvements in omparison to the initial roughness after laser milling. Another benefit is that the process also improves the edge quality of the laser machined structures by removing the burrs.
Feasibility study for microfluidic separation device for biological fluids
Imego AB
18
Denator AB
Yes
The study requested is a preparation for a possible research and development project of a product that can perform fast separation and inactivation of biological fluids. Proteins, peptides and metabolites are rapidly degraded after extraction, which causes large problems for both academic and industrial protein research. In this study, Imego will investigate the feasibility of fabricating low-cost glass and polymer chips that combine microfluidic separation with Denator’s proprietary preservation technology.
categories
blanking/punching | blood diagnostics | consultancy | design for manufacture | dies | DNA protein analysis | drilling | dry etching | flow | glass | heat exchangers | Injection moulding | Laser ablation | Measurement / Metrology | Medical | metals | Micro-fluidics | Micro-sensors & actuators | micro-valve actuators | Pharmaceutical | polishing | polymers | pressure | sensors | small scale production | surface finishing | temperature | 10 Days (€5000) maximumBayerisches Laserzentrum
Various laser systems for ablation, soldering, welding, marking, adjustment, sintering, stereolithography, LOM.
Stephan Roth
categories
actuators | Assembly & packaging | Automotive | beam deflectors | ceramics | Communications | consultancy | design for manufacture | diffractive optical elements | drilling | general | glass | Laser ablation | Manipulation / handling | Markets | Measurement / Metrology | Mechanical machining | Medical | metals | Micro-optics | Micro-sensors & actuators | microreflective optical components | new materials | polymers | positioning / fixing | relays | small scale production | stereolithography | surface finishing | switches | tooling | waveguides and photonic structuresKU Leuven
K.U.Leuven is one of the three divisions of the department of Mechanical Engineering. PMA is active in the following areas: manufacturing processes, machine and instrument design, structural dynamics, acoustics, CAD/CAM/CIM, robotics, assembly automation, mechatronics, micro- and precision engineering, and metrology. The PMA division work includes original fundamental work as well as successful industry-oriented projects carried out in collaboration with small, medium and large companies and with international organisations like the European Space Agency. An important role of the research activities of the PMA division is based on international collaboration as shown by the participation of the division in more than 40 EC funded projects. The PMA division has also been nominated as Centre of Excellence by the Belgian Government.
dominiek reynaerts
categories
acceleration | actuators | Aerospace | Applications | Assembly & packaging | Automotive | blanking/punching | ceramics | coining | diamond turning | drilling | drug delivery systems | Electrical discharge machining (EDM) | Electrochemical machining (ECM) | Electroplating | Focussed Ion Beam (FIB) | force | general | grinding | heat exchangers | Hot/UV embossing | Injection moulding | Laser ablation | LIGA | Manipulation / handling | Markets | Measurement / Metrology | Mechanical machining | Medical | metals | Micro-fabrication | Micro-fluidics | Micro-optics | micro-pump actuators | Micro-sensors & actuators | micro-valve actuators | microreflective optical components | milling | motors | new materials | polishing | polymers | positioning / fixing | pressure | Products | Scientific / Academic Community | sensors | Space science | stereolithography | stress | surface finishing | turning
Copyright© 4M Network of Excellence.