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A Comparative Study on the Evaluation of Hybrid Welding Process Variables in inconel Material

Analysis of Inconel Welding Characteristics by Process Variables

Evaluation of penetration depth by laser welding speed

Fig. 39 Experiment by Laser Weld Speed (BOP)

Penetration depth results by laser welding speed

Case No. Welding speed
(m/min)		 Bead section Penetration depth
(mm)		 Remarks
L1 3 3.2mm Full penetration
L2 4.5 3.2mm
L3 6 2.67mm Partial penetration
L4 7.5 2.1mm

Evaluation of penetration depth by laser welding speed

Fig. 40 Experiment by arc welding speed (BOP)

Bead shape by arc welding speed

Case No. Wire transmission speed
(m/min)		 Welding speed Bead figure Remarks
A1 15 3 Bad bead shape
A2 4.5
A3 6
A4 7.5

Hybrid Welded BOP Test Using Inconel 625 Material

Fig. 41 Experiments by Hybrid Weld Rate and Transfer Speed (BOP)

Bead Shape by Arc Weld Speed

Case No. Wire transmission speed
(m/min)		 Welding speed Bead figure Remarks
Bead surface A back bead
LA1 8 2
LA2 12 1.5
LA3 8 1.5
LA4 6 1.5
LA5 8 1
LA6 6 1
LA7 4 1

A Comparative Study on the Evaluation of Hybrid Welding Process Variables in Inconel Material

Fig. 42 Inconel625 Hybrid Welding Face-to-face Experiment

Inconel 625 Hybrid Face-to-Face Weld Test Plan

Case No. Feed velocity
(m/min)		 Wire Transmission Speed
(m/min)		 Laser output
(kW)		 Remarks
1 1 6 2.1 Three repeated measurements of tensile strength
2 1 8 2.7
3 1 10 3.3
4 1.2 6 2.7
5 1.2 8 3.3
6 1.2 10 2.1
7 1.4 6 3.3
8 1.4 8 2.1
9 1.4 10 2.7
Fixed variable Protective gas type, protected gas flow rate, laser lead, laser-arc heat source gap, torch angle, wire type, laser focus position, etc.

Inconel 625 Hybrid Buckling Test Results

Case No. Bead surface Bead section Tensile strength
(MPa)
Bead surface A back bead
1 869.4
858.2
852.2
2 900.2
884
872.6
3 689.3
678.2
669.3
4 850.5
875
887.4
5 906
893
882
6 949.7
925
923.3
7 900.5
915
928.9
8 472
460
440.2
9 893.9
888.5
902.5

Fig. 43 Results of tensile strength test for each condition

Fig. 44 Inconel625 Analyzing the Noise Ratio compared to butt weld signals

Inconel 625 Tensile Strength Evaluation

Fig. 45 Inconel625, parent metal S-S curve

Fig. 46 Inconel625 Welded S-S Curve

Evaluation of the hardness of the Inconel 625 welds

Fig. 47 Results of tensile strength tests for each condition