Hamilton Jet HJ212, Installation And Service Manual

Page: 142 / 198

Appendix
Installation and Service Manual
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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