Details
| Original language | English |
|---|---|
| Article number | 121015 |
| Number of pages | 8 |
| Journal | Journal of Engineering for Gas Turbines and Power |
| Volume | 140 |
| Issue number | 12 |
| Early online date | 20 Nov 2018 |
| Publication status | Published - Dec 2018 |
Abstract
The widespread adoption of blade integrated disks (blisks) made of titanium demands tailored regeneration processes to increase sustainability and economic efficiency. High standards regarding geometrical accuracy and functional properties as well as the unique characteristics of each type of damage complicate the repair. Thus, flexible and well-designed processes are necessary. Typically, material deposit is followed by a milling or grinding process to restore the original shape. Here, the individual repair processes not only have to be controlled but also their interaction. For example, depending on the resulting microstructure of the welded seam, the recontouring process needs to be adapted to minimize tool wear as well as shape deviations of the complex blade geometries. In this paper, the process chain for a patch repair is examined, consisting of a tungsten inert gas (TIG) welding process followed by five-axis ball nose end milling. Conventional TIG as well as a modified TIG process producing a finer grain structure and enhanced mechanical properties of deposited material was investigated. Grain refinement was achieved by SiC particles added to the weld pool. Based on the characteristics of the fusion material and static stiffness of the component, a methodology is introduced to minimize shape deviation induced by the subsequent milling process. Special attention is given to tool orientation, which has a significant impact on the kinematics and resulting process forces during milling. An electromagnetic guided machine tool is used for compensation of workpiece deflection.
ASJC Scopus subject areas
- Energy(all)
- Nuclear Energy and Engineering
- Energy(all)
- Fuel Technology
- Engineering(all)
- Aerospace Engineering
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Mechanical Engineering
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In: Journal of Engineering for Gas Turbines and Power, Vol. 140, No. 12, 121015, 12.2018.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Technology-based Recontouring of Blade Integrated Disks After Weld Repair
AU - Denkena, Berend
AU - Mücke, Arne
AU - Schumacher, Tim
AU - Langen, Demian
AU - Hassel, Thomas
PY - 2018/12
Y1 - 2018/12
N2 - The widespread adoption of blade integrated disks (blisks) made of titanium demands tailored regeneration processes to increase sustainability and economic efficiency. High standards regarding geometrical accuracy and functional properties as well as the unique characteristics of each type of damage complicate the repair. Thus, flexible and well-designed processes are necessary. Typically, material deposit is followed by a milling or grinding process to restore the original shape. Here, the individual repair processes not only have to be controlled but also their interaction. For example, depending on the resulting microstructure of the welded seam, the recontouring process needs to be adapted to minimize tool wear as well as shape deviations of the complex blade geometries. In this paper, the process chain for a patch repair is examined, consisting of a tungsten inert gas (TIG) welding process followed by five-axis ball nose end milling. Conventional TIG as well as a modified TIG process producing a finer grain structure and enhanced mechanical properties of deposited material was investigated. Grain refinement was achieved by SiC particles added to the weld pool. Based on the characteristics of the fusion material and static stiffness of the component, a methodology is introduced to minimize shape deviation induced by the subsequent milling process. Special attention is given to tool orientation, which has a significant impact on the kinematics and resulting process forces during milling. An electromagnetic guided machine tool is used for compensation of workpiece deflection.
AB - The widespread adoption of blade integrated disks (blisks) made of titanium demands tailored regeneration processes to increase sustainability and economic efficiency. High standards regarding geometrical accuracy and functional properties as well as the unique characteristics of each type of damage complicate the repair. Thus, flexible and well-designed processes are necessary. Typically, material deposit is followed by a milling or grinding process to restore the original shape. Here, the individual repair processes not only have to be controlled but also their interaction. For example, depending on the resulting microstructure of the welded seam, the recontouring process needs to be adapted to minimize tool wear as well as shape deviations of the complex blade geometries. In this paper, the process chain for a patch repair is examined, consisting of a tungsten inert gas (TIG) welding process followed by five-axis ball nose end milling. Conventional TIG as well as a modified TIG process producing a finer grain structure and enhanced mechanical properties of deposited material was investigated. Grain refinement was achieved by SiC particles added to the weld pool. Based on the characteristics of the fusion material and static stiffness of the component, a methodology is introduced to minimize shape deviation induced by the subsequent milling process. Special attention is given to tool orientation, which has a significant impact on the kinematics and resulting process forces during milling. An electromagnetic guided machine tool is used for compensation of workpiece deflection.
UR - http://www.scopus.com/inward/record.url?scp=85057071229&partnerID=8YFLogxK
U2 - 10.1115/1.4040738
DO - 10.1115/1.4040738
M3 - Article
AN - SCOPUS:85057071229
VL - 140
JO - Journal of Engineering for Gas Turbines and Power
JF - Journal of Engineering for Gas Turbines and Power
SN - 0742-4795
IS - 12
M1 - 121015
ER -