Kryogenes Fräsen additiv gefertigter Bauteile/Cryogenic milling of additively manufactured components

2021 ◽  
Vol 111 (11-12) ◽  
pp. 824-828
Author(s):  
Kevin Gutzeit ◽  
Sebastian Greco ◽  
Benjamin Kirsch ◽  
C. Jan Aurich
Keyword(s):  
Surface Layer ◽  
Strain Hardening ◽  
Surface Quality ◽  
Industrial Applications ◽  
Cryogenic Cooling ◽  
Cryogenic Milling ◽  
Cooling Strategy ◽  
Hardened Surface ◽  
Eine Verbesserte

Die erreichbare Oberflächenqualität additiv gefertigter Bauteile ist für industrielle Anwendungen häufig unzureichend. Daher ist eine in der Regel spanende Nachbearbeitung der Bauteile unumgänglich. In diesem Beitrag wird die spanende Nachbearbeitung durch eine kryogene Kühlung ergänzt. Hierdurch wird die thermische Belastung in der Werkstückrandschicht reduziert, um so eine Kaltverfestigung zu begünstigen. Es konnte eine verbesserte Oberflächenqualität sowie eine Randschichthärtung realisiert werden.   The surface quality of additively manufactured components is often insufficient for industrial applications. As a result, additional processes are necessary to improve the surface quality. In the investigations presented, a cryogenic cooling is used when milling additively manufactured components. The cryogenic cooling strategy favors the introduction of strain hardening effects into the surface layer. An improved surface quality as well as a hardened surface layer were realized.

Effect of cryogenic cooling on the structure, hardness, and surface quality of 60C2A spring steel

1993 ◽  
Vol 64 (2) ◽  
pp. 172-174
Author(s):  
E. T. Brook-Levinson ◽  
I. P. Vasilenko ◽  
O. I. Koval ◽  
S. A. Tanayeva
Keyword(s):  
Surface Quality ◽  
Spring Steel ◽  
Cryogenic Cooling

Influence of Contact Efforts on the Surface Quality of Difficult Profile under Finishing Hardening Machining

2021 ◽  
Vol 316 ◽  
pp. 738-744
Author(s):  
Gennady A. Sukhochev ◽  
Vasiliy N. Sokolnikov ◽  
Andrey M. Nekrylov
Keyword(s):  
Surface Layer ◽  
Research And Development ◽  
Surface Quality ◽  
Granular Media ◽  
Surface Finishing ◽  
Complicated Shape ◽  
Development Data ◽  
Surface Layer Quality ◽  
Experimental Researches

This work presents the research and development data in the field of finishing and hardening processes for parts with complicated shape surface. The comparable effectiveness of different surface finishing and hardening processes were studied, and intensification possibilities of processes of vibration finishing - hardening machining of narrow ducts by means of combined methods with metal anodic dissolution were shown. The results of experimental researches of influence of extrusion conditions of granular media on the surface layer quality are presented.

scholarly journals The Tribological Properties of Laser Hardened Steel 42CrMo4 / Właściwości Tribologiczne Stali 42Crmo4 Hartowanej Laserowo

2015 ◽  
Vol 60 (4) ◽  
pp. 2939-2944 ◽  
Author(s):  
W. Tarasiuk ◽  
A.I. Gordienko ◽  
A.T. Wolocko ◽  
J. Piwnik ◽  
B. Szczucka-Lasota
Keyword(s):  
Surface Layer ◽  
Tribological Properties ◽  
High Resistance ◽  
Hardened Steel ◽  
Laser Head ◽  
Friction Tester ◽  
Pin On Disc ◽  
Resistance To Wear ◽  
Hardened Surface

The paper presents results of research tribological properties laser hardened steel 42CrMo4. Parameter influencing on the quality of the hardened surface was laser head speed. The study was conducted on friction tester pin-on-disc type T-11, and a counter sample disc was silicate. Parameter determining the quality of the surface layer is the intensity of wear. Based on the results we obtain information about the laser head speed to temper steel 42CrMo4 so as to maintain a high resistance to wear.

Effect of cryogenic cooling on machinability and surface quality of bio-degradable ZK60 Mg alloy

2015 ◽  
Vol 87 ◽  
pp. 1030-1036 ◽  
Author(s):  
S. Dinesh ◽  
V. Senthilkumar ◽  
P. Asokan ◽  
D. Arulkirubakaran
Keyword(s):  
Surface Quality ◽  
Cryogenic Cooling ◽  
Mg Alloy

Technological capabilities for control of effective cold working depth of surface layer by wave strain hardening

2021 ◽  
pp. 73-76
Author(s):  
A.V. Kirichek ◽  
D.L. Solov’ev ◽  
S.A. Silant’ev ◽  
S.V. Barinov ◽  
A.V. Yashin
Keyword(s):  
Surface Layer ◽  
Strain Hardening ◽  
Cold Working ◽  
Quality Parameters ◽  
Technological Capabilities ◽  
Flat Surfaces ◽  
Wave Deformation ◽  
Hardened Surface

The parameters of wave deformation are described. The results of studies of the effect of the diameter of the instrument used for wave deformation of flat surfaces on the quality parameters of the hardened surface layer are presented. A significant increase in depth and degree of hardening after processing has been established, and the parameters of the tool and the technology of its application to obtain the most effective results have been determined.

Actively Cooled and Activated Coolant for Grinding Brittle Materials

2008 ◽  
Vol 389-390 ◽  
pp. 338-343 ◽  
Author(s):  
Y. Gao ◽  
J. Xin ◽  
H. Lai
Keyword(s):  
Surface Roughness ◽  
Surface Morphology ◽  
Surface Quality ◽  
Experimental Studies ◽  
Brittle Materials ◽  
Cryogenic Cooling ◽  
Experimental Results ◽  
Cooling Method ◽  
Cooling Methods

An actively cooled and activated cooling approach is proposed and examined in this project in order to deal with the problems associated with methods such as the cryogenic cooling method. It is also aimed to further improve the surface quality of the workpiece after grinding by combining the advantages of the existing cooling methods. Both computational and experimental studies were conducted for grinding the brittle materials with the proposed approach. Optical examinations were used to study the surface morphology. The experimental results show that the surface quality can be improved by up to 23.75% on average in terms of surface roughness Ra. The computational test reveals that the heat can be taken away more effectively by the proposed approach.

Effect of diamond burnishing parameters on the state of the processed surface layer of billets made of high-strength "30ХГСН2А-ВД" steel

2020 ◽  
pp. 82-86
Author(s):  
A.N. Shvetsov ◽  
D.L. Skuratov
Keyword(s):  
Surface Layer ◽  
Residual Stresses ◽  
Strain Hardening ◽  
Processing Speed ◽  
Synthetic Diamond ◽  
High Strength ◽  
The State ◽  
Diamond Burnishing

The influence of the burnishing force, tool radius, processing speed and feed on the distribution of circumferential and axial residual strses, microhardness and the depth of strain hardening in the surface layer when pr ssing of "30ХГСН2А-ВД" steel with synthetic diamond "ACB-1" is considered. Empirical dependencies determining these parameters are given. Keywords diamond burnishing, strain hardening depth, circumferential residual stresses, axial residual stresses, microhardness. [email protected], [email protected]

Schwingungsüberlagertes Axialformen/Superimposed Oscillated Axial Forming

2020 ◽  
Vol 110 (11-12) ◽  
pp. 838-843
Author(s):  
Philipp Müller ◽  
Bernd-Arno Behrens ◽  
Sven Hübner ◽  
Hendrik Vogt ◽  
Daniel Rosenbusch ◽  
...  
Keyword(s):  
Surface Quality ◽  
Economic Importance ◽  
Combined Effect ◽  
Wird Eine ◽  
Forming Force ◽  
Forming Process ◽  
Forming Technology ◽  
Great Economic Importance ◽  
Gear Geometry

Techniken zur Steigerung der Formgebungsgrenzen in der Umformtechnik sind von hoher wirtschaftlicher Bedeutung. In dieser Arbeit wird eine Schwingungsüberlagerung im Krafthauptfluss eines Axialformprozesses zur Ausprägung einer Verzahnungsgeometrie untersucht. Die Auswirkungen der Schwingung auf die erzielbare Ausfüllung der Zahnkavitäten werden analysiert sowie die Parameter Schmierung und Oberflächengüte der Halbzeuge in ihrer kombinierten Wirkung untersucht. Es konnte eine Reduzierung der mittleren Umformkraft sowie eine Erhöhung der Formfüllung festgestellt werden. Techniques for extending the production limits in forming technology are of great economic importance. In this research, a superimposed oscillation in the main force flow of an axial forming process to form an axial gear geometry is investigated. The effects of the superimposed oscillation on the achievable form-filling of the tooth cavities are analyzed and the parameters lubrication and surface quality of the semi-finished products are investigated in their combined effect. A reduction of the averaged forming force as well as an increase of the form-filling could be achieved.

scholarly journals Smoothing additive manufactured parts using ns-pulsed laser radiation

2021 ◽  
Author(s):  
Florian Kuisat ◽  
Fernando Lasagni ◽  
Andrés Fabián Lasagni
Keyword(s):  
Surface Roughness ◽  
Mechanical Performance ◽  
State Of The Art ◽  
Pulsed Laser ◽  
Industrial Applications ◽  
Laser Source ◽  
Pulsed Laser Radiation ◽  
Current State ◽  
The Impact

AbstractIt is well known that the surface topography of a part can affect its mechanical performance, which is typical in additive manufacturing. In this context, we report about the surface modification of additive manufactured components made of Titanium 64 (Ti64) and Scalmalloy®, using a pulsed laser, with the aim of reducing their surface roughness. In our experiments, a nanosecond-pulsed infrared laser source with variable pulse durations between 8 and 200 ns was applied. The impact of varying a large number of parameters on the surface quality of the smoothed areas was investigated. The results demonstrated a reduction of surface roughness Sa by more than 80% for Titanium 64 and by 65% for Scalmalloy® samples. This allows to extend the applicability of additive manufactured components beyond the current state of the art and break new ground for the application in various industrial applications such as in aerospace.

Sign in / Sign up

Export Citation Format

Share Document