Re: [PSUBS-MAILIST] o-ring hull penetrations

[MerlinSub@t-online.de (Carsten Standfuß)]

Phil Nuytten schrieb:
> 
> Alec:
>         Make the hull insert out of stainless - it welds well to mild
> steel.

Thats the way.. but be careful with the welding stick or the welding
wire. For my MiG welder I use 3 kinds of wires : 

1.)Wire for black steel to black steel (all normal kinds of not
stainless steel) 
2.)Wire for white steel to white steel (all normal kinds of stainless
steel)
3.)Wire for white steel with black steel (not stainless steel with
stainless..) 

You should not use 1.) for white steel or for conections between 
black and white. You should also not use 2.) for conections
between black and white because there is a risk of cracks. 
Only 3.) is for black/white weldings. 

Unfortunalty we have other numbers here for the wires: 
1.) (black) called here OK Autorod 12.56 as Mig wire 18 Kg rolls
2.) (white) called here OK Autorod 16.31 as Mig wire 15 kg rolls
3.) (black with white) called here OK Autorod 16.95 as Mig wire 15 kg
rolls
number 3.) has also the material number stainless steel 1.4370

You will maybe find more information on the WWW.esab.com 
or at there office in 

USA
ESAB Welding & Cuttings Products
Florence, SC
Tel. 001 843 669 44 11
fax. 001 843 664 44 58

or
Canada 
ESAB Group Canada Inc.
Missisauga, Ontario
Tel.001 905 670 020 20
Fax.001 905 670 48 79

I have all other office adress around the world here if nessesary

During Mig welding the inserts - cover the surface of the insert
near the welding area with small steel or aluminium plate to protect 
the surface from hot sparks points.

regards, Carsten