Recent content by EdStainless

I see non-metallic as the best first option. You may need to have a steel frame fully enclosing it for support. How clean is your Urea? How clean do you have to keep it? What is the external environment?

I have addressed this by re-configuring the power supply when new to reduce the power to the LEDs. This is usually changing one resistor in the feedback. Overdriving the LEDS will rapidly age them. And reducing the load on the PS is useful since the majority of failure is not the LEDs or wiring...

I have used both Cu and Ag loaded synthetic grease in high current contacts (10kA). We preferred to use Krytox.

I had a customer tell me about their system. Slightly hotter, 285F but in the same range. The only leaks that they really worried about as a danger were the ones that were small enough that water wouldn't leak, just steam. They didn't see it as a serious personal injury issue, just as system...

How large of a tank are we talking? What are the purity requirements? What will be your temperature control?

No, flaring doesn't improve joint strength. But it greatly lower your tube side pressure drop and it go a long ways to minimize the turbulent erosion at the inlet and outlet.

For castings you need to cut completely below the surface from the casting. This is often >0.060". There will sometimes be embedded material in the surface layer. Low rpm, deep cut, lots of HP, and requires a very stiff machine and tool holder. Your castings have been solution annealed haven't...

Or use DuckDuckGo as a browser. It handles those just fine.

So you listed 9 terms, you realize that is encompasses 20-40,000 variables. Though flammable, inflammable are the same thing. Explosive is just another range of flammability. Now self ignition or deflagration is another thing. Toxic and lethal are variation of the same issue, bio-impact. And...

2205 will resist erosion at velocities over 3m/s. In plain clean water I have seen 2205 hold up with >25m/s flow. The real problem in the inlet into the tubes. Will you use a 2205 tubesheet? Are you prepared to flare in the inlet and outlet ends of the tubes? The 2205 will resisted droplet...

I had to laugh when I saw the title of this thread. We used to make tubing in a specialty stainless alloy. How special? Well we bought the two heats of it that melted each year. For specialty steels there are many small distributors. Start with people like Alro and Fry, if they don't have it...

Many grain driers use oval tubes that are hydraulicly expanded into the tubesheets.

What is the tube material? Condensing streams are tricky. Often there will be impingement protection in the form of solid rods as the first two rows in place of tubes. In main steam condensers they run some crazy velocities but they can spread it out a lot and provide protection.

If you simply wanted to cut the flange from plate you would use 140mm plate wouldn't you? Isn't this the same orientation as his original solution? But in this case the "LT" and "ST" very around the ring. At least with his approach they will stay constant. Is he cutting across the plate or along...

One of the problems with alloys like 91 is that you can't judge the creep strength of the welds based just on looking at them. If you don't actually have data on the impact of weld repair (and re-PWHT) then caution is needed.