What did we don't understand that they did?

Valery, most factories in Holland and Germany uses a chemical process to make steel anti rust / rustproof for products used outdoors. There are not many sunny days in Holland and plenty of water falling from the sky. I am convinced that the steel boat industry also using this kind of anti rust process.
Bert

 

What process is that?
Is it a secret?

 

No, we used it in South Africa already some 40 years ago. In our case for the production of cabinets for the telecom industry, standing in all kind of weather conditions at corners of the street. Forgive me that I am not able to give you all the details anymore. But we dipped it in a chemical bath and then in an oven. Bert

 

There is a chance that he is speaking about phosphating.
This removes millscale. Often used in powder coating as a cleaning process though I have seen it used on steel tubing

There is another method which is the thermal application of zinc onto sand blasted steel. They sand blast and then into a hot area, they feed zinc wire into the hot zone, and the zinc spray attaches itself to the steel. Never seen this done but I worked on summer for a company that used Eutectic-Castolin spray weld, metalizing, to steal as an abrasive resistant coating. Tungsten powder was fed into a large oxy-acetylene flame and then onto the substrate

 

If I still remember something like:

https://www.youtube.com/watch?v=-SFVgVVIHdc

Except, I thought, we placed it in an oven for a couple of hours as a last phase. But it is so long ago already, I cant give the details anymore. I am already for 25 years retired and enjoying a great pension. I had little to do with our factory with 2000 people, other then walking through it, to see the manager . Bert

 

There must be 100 such processes.
Not much help here.

How big of an oven would you need for a ship?

With no details we couldn't even try to discover if anyone or everyone in North America now does or did the same thing.

 

interesting
https://www.youtube.com/shared?ci=kOWNUV20lO0

 

https://www.youtube.com/shared?ci=3DLrbI_RhDY

 

Nice to see you just discovered plating.
Known for at least 500 years.

What was the original finish of the motorcycle part?
Aside from the dirt I mean.

Having had lots of those I assure you it was plated with something.

Zinc is very soft. Not really applicable for plating the threads of a screw, or the contact surfaces where the axle is torqued down on that bike.
It will be ground right off.

 

On the other hand, just about every plated bolt that is commonly available from a bolt supplier is in fact electrocoated zinc plated.
as compared to hot dip

 

Re post #1 ---> PassageMaker ---> Boat Reviews ---> Steel ---> Cold Hard Steel ^Info​

 

Yes Angelique, I referenced that same article in my argument for construction the hull of a Pilgrim 40 trawler/canal boat of steel...in a frameless fashion.
http://www.trawlerforum.com/forums/s3/redesigning-pilgrim-40-trawler-canal-boat-11212.html


http://www.trawlerforum.com/forums/showpost.php?p=172896&postcount=18


And here was another reference I made
http://www.trawlerforum.com/forums/showpost.php?p=468871&postcount=366

 

...another opinion from that pilgrim redesign though process

 

Barry,

You are right, I was thinking about hot dipped zinc.

 

I might suggest you give a little more thought to the 'Titles' of your new subject threads. It might attract a lot more responders