Aluminium Weld Procedure - Hamilton Jet HJ212 Installation And Service Manual

Appendix

Aluminium Weld Procedure

085080 Issue D
1 Welds
To be full penetration and conform to relevant classification society requirements (e.g. ABS, Lloyds

Register, DNV).
2 Welder qualifications
Properly qualified welder to relevant classification society requirements, in downhand or overhead as

required.
3 Inspection
Inspection to be done by a welding inspector qualified to relevant classification society requirements.

4 Site
The site must be:
Dry and free from steel dust or any other contaminates that could effect the finished weld condition.

Sheltered from draughts to prevent disturbance to shielding gas.

5 Welding process
M.I.G.
6 Welding wire
Plate (5086 or 5083) to plate (5086 or 5083), use 5356 filler wire.

Casting (EN AC 44100) to casting (EN AC 44100), use 4043 filler wire.

Casting (EN AC 44100) to plate (5086 or 5083), use 4043 filler wire.

5356 filler wire may be used if the local process/conditions show superior weld quality to 4043, however

adequate inspection shall be performed as per paragraph 15.
7 Shield gas
Argon or helium.

8 Weld position
Weld position options are:
Flat downhand. Turn hull over to do the other side flat downhand. Requires double vee prep.

Single vee prep. Use backing strip. Weld flat downhand one side only, then grind off backing strip.

Double vee prep. Flat downhand one side. Overhead other side.
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Installation and Service Manual