Issue 53

Y. Lu et alii, Frattura ed Integrità Strutturale, 53 (2020) 325-336; DOI: 10.3221/IGF-ESIS.53.25

amount. The calculation results are shown in Tab. 3. It can be seen from the table that the wire feed speed has the greatest influence on the CMT welding deformation, the welding speed is second, and the arc correction has the least influence.

Factor

A

B

C

D

Wire feed speed (m/min)

Welding speed (mm/s)

Aluminum plate thickness (mm)

Arc correction (%)

Level

1

3.6

0.56

-5

1.0

2

3.9

0.62

0

1.2

3

4.2

0.66

5

1.5

4

4.5

0.70

10

2.0

Table 1: Test level of factor

Figure 4: Binocular stereo vision measurement of mark point device

Factor

Result

A

B

C

D

E

ΔD

Serial number

Aluminum plate thickness

Wire feed speed Welding speed Arc correction

Error Deformation (mm)

1 2 3 4 5 6 7 8 9

1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4

1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4

1 2 3 4 2 1 4 3 3 4 1 2 4 3 2 1

1 2 3 4 3 4 1 2 4 3 2 1 2 1 4

1 2 3 4 4 3 2 1 2 1 4 3 3 4 1 2

0.52 0.64 0.48 0.50 0.36 0.40 0.46 0.34 0.50 0.76 0.68 0.58 0.42 0.64 0.52 0.38

10 11 12 13 14 15 16

3

Table 2: Orthogonal test results

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