Trying to make invar

[valenti_scott]

Hello-
I am attempting to make invar. The mix I just tried was 4 oxite ,8 volatiles, 50 nickel and 50 iron.

What happened was that I had a good high temperature and high pressure at first. I was waiting for the pressure to come down to 7 mpa, but the temperature was also coming down.

By the time the pressure got down to 7, the temperature was only 1.1 kk, so it was a fail. I guess I'm wondering how I should modify this mix. Any comments on what happened here are welcome.
-Scott

Later: I was able to get it done with the mix 3-6-25-25.

[Cal_Gaz]

I use 5 oxitte and 5 volatiles and then add the 50g/50g. The pressure drops within the range before the temperature comes down.

[valenti_scott]

I thought oxite and volatiles were always used in a one-to-two ratio. At least that's for steel. For some reason it's different with invar? Is it because of the pressure or temp that you want?

[Cal_Gaz]

as far as i know the one to two ratio is for the most efficient burn so you have very little waste gas. Playing around with the ratios gives different results. I found this site really helpful as it has a table of the different fuel ratios https://stationeers-wiki.com/Furnace

[Maireen]

1:1 to cook the ores
drain the furnace and put 2 ox 4 vol

[valenti_scott]

Yeah, it looks like you normally want to use 1:2 (ox:vol), but apparently there is an exception for invar, when you want to use 7:7, according to the wiki. I guess this gives you less pressure?

I'm not sure if I understand. The table in the wiki (furnace) is over my head, not sure what all those terms mean, like "prime" (is that the initial pressure in the furnace), FAR, how to equate moles to the actual units given when you hold them in your hand...

[Rattlehead]

For high temp and low pressure alloys, if I'm working with the basic furnace in a temporary install, I just put a pipe to a valve and passive vent on the furnace output. Get it heated up, then "bump" the valve until the pressure is down to where I want it.

So, just open the valve a second or so, close it back, check the furnace pressure, repeat until the pressure is down where I want it.

Once you have a furnace set up with proper fuel input and waste output you can manipulate the pressure by adjusting the fuel in and exhaust out pumps.

[valenti_scott]

Yeah, I've just been using a basic furnace, with a simple output pipe attached to a valve and a passive vent. I could release pressure as needed to get the pressure down, but I guess I was afraid the temp would come down too. So this is something I'll try.

I'm not even sure what you mean by "proper fuel input and waste output," but I think it's probably an advanced furnace, with output going to different tanks, in order to save gasses? And for input, there must be a better way to feed the fuel into the furnace, rather than dropping-in lumps of oxite and volatiles...I wouldn't even know where to start, though. For now I'm taking a break, because I'm tired of certain bugs (see my posts in the bug reports).

[Rattlehead]

Well, the short version is: Oxite and Volatiles can be captured, filtered into their own storage, and then mixed to make fuel. The fuel is sent to the input on the back of the furnace via a volume pump, and another volume pump controls the output on the back of the furnace going to your waste system. The advanced furnace has the volume pumps already built in, but I think that's the primary difference with it.

Opening the valve to your passive vent will probably drop the temp a bit, but the pressure should drop much more quickly.

[valenti_scott]

OK, thanks; I'll experiment with pumping oxite and volatile gas into a furnace. I assume I'd still want that 1:2 ratio of the moles of gasses; figuring how much gas to use...oh yeah, that table above shows how many moles to use, great. I'll look at the adv. furnace too.

[Rattlehead]

What I have is filtration units in my atmospherics area that pull O2 and Volatiles (H2) out into their own tanks. Then I set up my fuel tank somewhere nearby (but not TOO nearby) and run O2 and H2 lines from those tanks over to it. Then I run those into a Gas Mixer and the output from the mixer goes into the fuel tank. I set the mixer to a 66/34 mix, with the H2 at 66% and the O2 at 34%.

Then I run a pipe from the fuel tank to the furnace input. If you're not using the Advanced Furnace you'll need a volume pump or similar to control the fuel going into the furnace.

Just make sure the temps are low. H2 and O2 will combust at about 32C. Spicy!

[valenti_scott]

Awesome; I watched a YT vid about mixing o2 and h2 into a canister, for use as fuel; I think I'm getting the idea.

[aaron]

making invar is super easy.. just put about 10 of each in the furnace, then let the pressure out until its under 7.
if you need more heat, add more volatiles like 5 more.

[FarmerPalmer]

@ valenti_scott, post #7

"I'm not even sure what you mean by "proper fuel input and waste output,"

Top pipe Brown = waste out,
2nd pipe Grey = CO2, used to flush out furnace. I used CO2 as most avalible.
3rd pipe Red = H2
4th pipe White = O2.

https://steamcommunity.com/sharedfiles/filedetails/?id=1888279745

And this is the IC control + operating devices

https://steamcommunity.com/sharedfiles/filedetails/?id=1888279835

[valenti_scott]

Ah, yes, thanks for the tips; as I said above, I'll be taking a break from the game because I can't deal with the bugs any more (see my bug reports), but I'll check back after future update(s). A real awesome game, just so buggy.

[aaron]

i been playing about 100 hours or so.. i havent found any game breaking bugs.. the only times i got injured was sort of my fault.. like i put a frame on top of me, then welded it up with me inside.. bad idea.
i dug out a hole, then put a frame inside. again bad idea.
i put my non smart tank in my smart fill.. bad idea.
i turned the solar panel with me in the way.. bad idea.

i got out of a chair that was too close to a wall. i guess that is a bug?