scholarly journals High-rate laser metal deposition of Inconel 718 component using low heat-input approach

2010 ◽  
Vol 5 ◽  
pp. 379-386 ◽  
Author(s):  
C.Y. Kong ◽  
R.J. Scudamore ◽  
J. Allen
Keyword(s):  
Heat Input ◽  
Inconel 718 ◽  
Metal Deposition ◽  
High Rate ◽  
Laser Metal Deposition

scholarly journals Laser Metal Deposition as Repair Technology for a Gas Turbine Burner Made of Inconel 718

2016 ◽  
Vol 83 ◽  
pp. 761-768 ◽  
Author(s):  
Torsten Petrat ◽  
Benjamin Graf ◽  
Andrey Gumenyuk ◽  
Michael Rethmeier
Keyword(s):  
Gas Turbine ◽  
Inconel 718 ◽  
Metal Deposition ◽  
Laser Metal Deposition ◽  
Repair Technology ◽  
Gas Turbine Burner

Melt Pool Temperature Control for Laser Metal Deposition Processes—Part II: Layer-to-Layer Temperature Control

2010 ◽  
Vol 132 (1) ◽  
Author(s):  
Lie Tang ◽  
Robert G. Landers
Keyword(s):  
Temperature Control ◽  
Heat Input ◽  
Laser Power ◽  
Process Model ◽  
Metal Deposition ◽  
Laser Metal Deposition ◽  
Melt Pool ◽  
Power Profile ◽  
Melt Pool Temperature ◽  
Deposition Processes

Heat input regulation is crucial for deposition quality in laser metal deposition (LMD) processes. To control the heat input, melt pool temperature is regulated using temperature controllers. Part I of this paper showed that, although online melt pool temperature control performs well in terms of tracking the temperature reference, it cannot guarantee consistent track morphology. Therefore, a new methodology, known as layer-to-layer temperature control, is proposed in this paper. The idea of layer-to-layer temperature control is to adjust the laser power profile between layers. The part height profile is measured between layers, and the temperature is measured online. The data are then utilized to identify the parameters of a LMD process model using particle swarm optimization. The laser power profile is then computed using iterative learning control, based on the estimated process model and the reference melt pool temperature of the next layer. The deposition results show that the layer-to-layer temperature controller is capable of not only tracking the reference temperature, but also producing a consistent track morphology.

scholarly journals Comparison of laser metal deposition of Inconel 718 from powder, hot and cold wire

Procedia CIRP ◽  
2018 ◽  
Vol 74 ◽  
pp. 206-209 ◽  
Author(s):  
Markus Bambach ◽  
Irina Sizova ◽  
Frank Silze ◽  
Michael Schnick
Keyword(s):  
Inconel 718 ◽  
Metal Deposition ◽  
Laser Metal Deposition ◽  
Cold Wire
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