LIBRARY ı6ıul 0) - Cranfield University

Appendix B
This appendix shows the format in which the file containing the coefficients of
the welding models must be written so that it can be correctly read by the off-line
programming module. The file defined for power source used in this work
(Migatronic BDH550) is shown below. The sintax used is explained in the header of
the file, between the asterisk (*) lines. The file name extension defines the type of
joint which the file corresponds to. The valid extension names are: "fil" for fillet
joints, "lap" for lap joints and "but" for butt joints. The name of the file shown below
was chosen to be "AR5MS 1 OA. FIL", "AR5" standing for Argonshield 5 shielding
gas, "MS 10" standing for mild steel 1.0mm welding wire and "A" indicating that a
power source other than the BDH320 was used.
File start:
; Coefficients for models obtained from "cal" data series
Welding models
Coefficients obtained for 1 mm mild steel wire and BOC Argonshield 5
shielding gas in fillet joints.
-Each line corresponds to a model, containing the respective
coeficients.
-Each number must be separated by a space, a comma or a tab.
-Each line must finish with a #.
-A line begining with a semi-colon is considered a comment.
-A line begining with a colon indicates a label. An equal sign (_)
indicates the end of the label and the begining of the label value.
The valid labels are:
Material: indicates the welded material.
GasType: indicates the shielding gas.
WireDiameter: indicates the wire diameter in mm.
WPS: indicates the Welding Power Supply used to obtain the coeffitients
-Observation:
III It is mandatory that the four labels are defined III
Material = Mild Steel
GasType = BOC Argon-Shield 5 (Ar 5%C02 2%02)
WireDiameter =1.0
WPS = BDH550
Coefficients of the regression models
Leg length model coefficients
Side leg (a1 1 b1 1)
1 0.561068#
Bottom leg (al _2 b1 2)
1 0.592637#
Off-line mean current model coefficients (a2 b2 C2 d2) (bead on plate)
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