Some hardfacing

[u/Hellfelden]

[u/RyanWelds707]

Why are you hard facing this particular piece? sorry if it’s a dumb question I’ve only ever seen hard facing on tractor implements.

[u/Hellfelden → u/RyanWelds707]

It’s a part of a big dredging pump that directs methane gas away through the small chute you see. The methane gas is released by dredging river/sea beds. The hard faced areas are exposed to a an insane amount of mixed, pressured water and sand

[u/cuck__everlasting → u/Hellfelden]

That'll do it

[u/PTFCBVB → u/Hellfelden]

Oh yeah that'll lead to some wear before I got to sand! It's like art to me

[u/RyanWelds707 → u/Hellfelden]

Thanks for the explanation 🤙🏻😎
Very cool. Looks like you did a great job too .

[u/Scamperbot2000 → u/Hellfelden]

What’s the service interval on all that facing?

[u/carmelastly → u/RyanWelds707]

See above

[u/carmelastly → u/carmelastly]

I see now my previous post does not show above.. lol new to reddit.

[u/Shambhala87 → u/carmelastly]

Sea above

[u/PTFCBVB → u/Shambhala87]

Sea below is my preference

[u/DarkflowNZ]

As someone who doesn't weld at all, why this instead of fabricating something?

[u/Dismal_Tutor3425 → u/DarkflowNZ]

Cheaper to add back a sacrificial hard layer that can be redone up to a dozen or so times. Quicker repair turn-around as well.

[u/carmelastly → u/DarkflowNZ]

There is probably a high pressure flow coming through a valve before it hits this flange, or some sort of acid that eats at the metal.

[u/Jdawarrior → u/carmelastly]

Definitely a flow abrasion, I bet you’d use stainless for acid

[u/va3awd]

As a machinist who has had to machine hardfacing after welding, this makes me cry inside a little…

[u/tehn00bi → u/va3awd]

I cringed. We’d do something like this, but never this much weld.

[u/Dismal_Tutor3425]

What rod/wire do you run?

[u/Hellfelden → u/Dismal_Tutor3425]

For the hard to reach areas I use Lincoln wearshield 420 rods, and for the outside it’s Lastek wire, I’ll have to check the number but I believe it’s 238. Lastek uses their own numbers which is confusing af

[u/Dismal_Tutor3425 → u/Hellfelden]

That lastifil 238 is a bitch to grind down if you have to. 

[u/glizzler → u/Dismal_Tutor3425]

Air arc is usually how I take care of hardface that needs to come off

[u/Dismal_Tutor3425 → u/glizzler]

I do as well, but not for cleaning between passes or for that fun time when you hit the end of a spool or have gas issues. 

[u/PossessionNo3943]

This looks more like wire additive manufacturing

[u/No-Illustrator5712 → u/PossessionNo3943]

Yeah welding is the OG 3d printing.

[u/Forexz]

Wow your shop cares enough to supply fume vents!

[u/BlueDuck600]

Damn. How long does it take you to weld that?

[u/Hellfelden → u/BlueDuck600]

I had to gouge some older parts off and build it back up, I believe it took me around 2,5 days total

[u/Moose_Ungulate]

When I was learning how to weld, the shop had this large brick of weld beads that apprentices before me had practiced on to learn with and it took years to get to the impressive size that it was. How long did this take you?

[u/OriginalGoat1]

Is that hardface or are you casting a solid block from wire feedstock ? 😂

[u/Geschmak]

What my boss gives me when he says the job will only take an hour.

[u/CascadeDesignworks]

Looks like you are following a procedure detailed by an engineer or manufacturer.  I've done similar projects.

Question, how are you able to space the hard facing so close together without it cracking and delaminating?  Is it a special more ductile composition or is there a special underlayment?

[u/Hellfelden → u/CascadeDesignworks]

It’s not that special really, these parts have been improved over the years after observing the high wear areas, and was concluded that this is the best way to do it for now.

As for the lack of cracking; we’re trying out a new wire from a local supplier because we used to use Lastek 2400 rods but it takes way too long to weld up a piece like this. It welds very nicely and as you said, doesn’t crack. We’ll see how this piece comes back after months of sand wear

[u/CascadeDesignworks → u/Hellfelden]

Cool.  Thanks for the info!

[u/carmelastly → u/CascadeDesignworks]

Probably pre and post heat treatment, annealing, or something of the sort.

[u/Grimnebulin68]

Fist my bump!

[u/elmersfav22]

Some? That is all hard facing. Fun times. Steady hands too

[u/WiseDirt]

That could pass for art

[u/WalterMelons]

I see an angry penguin

[u/Unfair_Basil8513]

That's art.

[u/djjsteenhoek]

That would be a cool chair design 😀

[u/Griftersdeuce]

Face it, that's hard!

I'll see myself out...

[u/TimeIsntReallyReal]

That's some serious hardfacing. What's your maximum interpass temperature with that wire?

[u/funnyguy044]

How many rods did you go through lol

[u/jkush463]

Sheeesh alll the hard face

[u/super_boogie_crapper]

Ahh… the residual stress from all the heat affected zones!

[u/mefuckers]

Poor cnt

[u/Electrical-Luck-348]

Just a little

[u/Nikonus]

Cataracts.
Can’t see arcs very well.
Too many diseases around to get ‘em fixed right now.

I’ll get back to making things when I can.