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Re: [PSUBS-MAILIST] Dome/hatch seat

Jim,
Weld your carbon steel hatch flange to the conning tower upper section ( this will keep it stable during the cladding process ) . Set up a powered turn table that will hold the weight of the conning tower assembly . Mount your MIG welder gun on some type of incrementally adjustable fixture. The gun will have to move across the face of the flange horizontally and vertically as successive layers of weld beads are laid down. You will also need some type of a rotary ground to the welding machine.  Pre heat the flange to 150/200 degrees F then begin the cladding process by first applying a layer of 309L stainless steel base metal  and then a top layer of 316L. Keep the weld beads as closely overlapped as possible. The 309L layer should be at least  .062"to .093"  thick and the 316L layer should be about .093" to .125" thick to allow enough build up for the final machined finish. Cladding is done all the time in industry . Practice on some scrap first to get you technique zero ' ed in.
Do not be afraid.
Dan Lance
 
 
----- Original Message -----
Sent: 4/4/2008 7:04:17 PM
Subject: Re: [PSUBS-MAILIST] Dome/hatch seat

Hi Emile,
 
Sounds like a great idea. I'm not sure that you can clad a portion of something, however hopefully someone has a plan!
 
Best Regards,
 
Jim K
 
----- Original Message -----
Sent: Friday, April 04, 2008 3:13 PM
Subject: [PSUBS-MAILIST] Dome/hatch seat

Hi,

 

The most obvious solution to have a rust free dome/hatch seat is to weld a stainless steel ring on the steel.

 

I wondered if there is a suitable cladding technique to clad a layer of stainless steel to the hull steel.

Anyone experience?

 

Regards, Emile

 

 

Emile van Essen

www.AiResearch.nl

Hobbemalaan 54

1816GE Alkmaar

072-5122401 / 06-44500720

 


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