WM_Su2014_17

First of all, what did I know? They didn't have cracks when it left Brooklyn. A couple of weeks later he gets to Japan and it had cracks. It's hydrogen cracking. I didn't tell them that, but I knew it was hydrogen cracking. It's delayed cracking. We caught delayed cracking. It's the only thing I know that kind of shows up a few days, a few weeks later.

So I said, you've transformed to martensite, because martensite is the material that's most susceptible to hydrogen cracking. So what do we make our HY steels out of? Martensite, right, because it gives us high strength. What did we do when we went to HSLA steels? We get rid of the martensite. We now have very fine grain controlled cooling steels that give us high strength, fine grain size, without a lot of alloy content. So what are we doing with HSLA steels? We were smarter in the 1980s to lower the alloy content, get rid of the martensite, and end up with a more weldable steel. And all we had to do was copy what the Japanese have been doing for ten years. Okay.

So I said, so you got martensite, you got your residual stresses from the forming operation, I don't know where your hydrogen comes from. And they said, well, could it be anything to do with the fact that we actually plasma spray on stainless steel powders on the inside to make a porous surface so that we can impregnate — this is the top-of-the-line cookware — impregnate the non-stick coating plastic into this porous massive stainless steel. I said, what's that got to do with hydrogen? Well, we use a 95 argon 5 hydrogen gas mixture. Oh. So, case solved, okay.

Um, so we just had to help them change, get rid of the hydrogen in their gas spray, and they wouldn't end up with hydro— with, uh, hydrogen cracking when it got to Japan. Okay, so there's a— see, if you ask me questions, I'll give you stories.