A Brass Casting Demonstration
HTML-код
- Опубликовано: 8 янв 2011
- A quick demonstration of how brass is melted to liquid form and poured
into sand mold boxes for casting pieces to be used in all kinds of
production. (Video was shot with Samsung TL-220 HD 720p Video) 
Наука
I'm quite impressed by the way you were so meticulous about safety. Going carefully, step-by-step, making sure there was nothing to trip over. I've seen many such videos wherein the people / person seemed to not care about what was around the feet, and / or was a bit careless in handling hot crucibles.
I love casting.. It's such a cool thing to watch. It's very satisfying - It's a reminder that us regular folks can still make quality things in fairly simple environments.
I watched your brass casting demo and noted that we use some different materials and steps. firstly we use brickie's loam (used with portland cement to make mortar & very cheap). We mix the loam with sump oil (usually from diesels) because my mates and I all own said vehicles, and this mixture is also recyclable.
The main difference with our approach is that when the stope is inverted to set the cores etc. we use a straight length of 3mm wire (defluxed welding rod ) to poke holes through the stope sand at the points where the mould void is deepest in the stope thus ensuring that gasses (which normally want to rise when they are hot ) are supplied with a ready made exit from the mould void as the pour begins. The wire is twisted between the thumb & forefinger to ensure a good clean vent, hence the need for straight wire. I have used this method with both lead & brass.
Regards
John
PS If you are going to keep recycling brass you may need to top up your feed with a little zinc.
Nothing amateur about this, very careful and methodical work ethic, even wearing gass masks for the zinc fumes. Cudoes guys loved it.
"She's Crafty" in the background. Sweet.
I knew somebody would know that song lol
The gate that helps produce the casting is then re-used in other melts mixed with un-used brass to keep the chemical ratio in good standing to make error free castings.
It looks like some decorative support, I noticed the detail along the side rails.
All we can say is that we are new with experience in Brass melting. As we know so far there is no need to add to the melt, all gases should rise up and out. only thing to worry about is removing the slag from the top of the crucible so it does not go into the casting boxes which can cause a bad casting by not getting a good flow as you pour.
Nice job lads. Looked very competent. I'd love to know what the final object was going to be.
part of a three part fireplace screen
These particular castings are binding frames for a 3 fold fireplace screen they will be silver brazed together to make up 3 panels.
Just so everyone knows and understand, I only filmed this. I only have some common knowledge of this kind of production. I am head mechanic for this company who will after these are casted will use them for jobs for customers. We were actually thinking of making a tutorial video sometime in the future.
I see many ppl have the same things as they have, the holder (for taking out the crusible) the turner (for pouring) and that kinda furnace. What does this setup oprox cost?
Very interesting! May I ask what it was you were casting?
how are moulds made?
i get a weird white powder people keep telling me it the zinc-oxide
from the bass. can i just throw in some tin to make it into bronze?
or does it needed something else?
Thats some awesome stuff on that website!!! Do you work for them, or did you just record some castings for them?
Would the temperature be higher using a charcoal foundry?
We have been consulting with professionals we use to actually had our previous casting made from.
What color is brass burning in the furnace?
what are those pieces you were casting?
Wow that is great! Though it looks extremely dangerous and awsome!!
Imagine Im in pandemic and I should to take my "Casting Laboratory class" via online... :( but this video shows what happenes in a casting.
Can you pls tell me, what happens with all the slack you produce? Melting in gain?
Using this method creates temps in the thousands degree to melt. But my understanding using charcoal is usually for Black Smiths to shape iron.
Muito bom mesmo !👍👍👍
BEAU TRAVAIL LES GARS
i think they might be the type of handrails you find splitting a large set of stairs.
Reminds me of how hot the lake of fire will be. Scary heat.
Yes, I took the time to record.
Part of a binding for a fireplace 3-fold screen.
@starsheild7 Why not quote? "1-15: And his feet like unto fine brass, as if they burned in a furnace; and his voice as the sound of many waters."
Would you do some casting for me. I would like to have a couple dozen small parts made for clocks. Mike
What size Crucible did you use?
+Freaky Paranormal I believe it was a #30.
I'm curious as to what they molded it into.
me as well.
Christian Campbell So what was the finished project?
Yes, you are absolutely right, no excuse...
what did je make
Oh right. That makes sense.
great
They are fireplace accessories, in this case it's 3-fold screen.
You do need to worry about gas inclusions. All brass and bronze alloys are the same way.
Tarp sounds like a good idea...
what is it?
show us the finished project!!!
As in the title says demonstration not a tutorial. If you wan to know what these will be later used in production go to wmhj.com and check the brass accessories.
Why don't you put a tarp down, under the box, when you take the sand off? Then you don't have to shovel it into a bucket, you can just push it all onto the tarp.
Not green, red like clay and oil added...it's the one of the finest sand available for the work we do.
@ClickThisToSubscribe Maybe they carve the mould out of ice, then pack it in sand, and let it melt, suck most of the liquid out, and let the rest evaporate?
wtf
nice work,I melt 1Kg max , interesing to see it scaled up. For the man who says use sodium silicate and co2, its not re usable, it degrades after 24hrs and you need co2, I like oil sand. i have 2 grades, fine for the face and course for the backfill. . thank you. things cast 1000 years ago are worth more than anything I could cast today.
hi, new to casting, what does your last sentence mean? loss of casting skills or the qualities of metal? thank you
+beautifulsmall We use 25% radio in weight of used brass or the gates back into the crucible
lol, he totally forgot he was casting brass. "Woah that's heavy,"
Lol. we have wire brushes, just to lazy to get one at another table, and they were done for the day..
interesting, there was a LOT of slag or dross (IDK what to call it) and at least one guy is wearing a filter mask. I wonder what the fear is. If it is brass, then probably no zink, right?
brass is an alloy of copper and zinc. bronzes copper and tin.
+Paul Gdry There is always zinc it all depends where you buy them some sellers have different chemical make up.
Cadium and lead could be present depending on the type of brass they were melting
Well this video was useful like a toothache.
Not green sand, red like clay..
Lol "Your burning your glove -_-"
green sand is for noobs. use sodium silicate mix for anything, not just inner cores. professional results.
It is very dangerous. Both must know there part, it is all timeing, and a slip may result in spilling the liquid and splattering it all over the place. Just a dot of that can go right through your clothing, it is why they are wearing proper gear to perform this task.
New York City
300k views. 300 likes... whaaaaat?
Sorry, castings are in house jobs only.
WHY THE TONGS? ... Just scrape the shit in there!!
I was thinking that too
His glove was getting hot so he switched to the tongs, The ingots had to be dropped into the crucible if you just shoved them in the hole some would miss.
+Matte Edström The heat force generated out of the opening is approx. 800 degrees and climbing to over 1500 degrees. Up close it looks like the afterburner of a jet engine.
Clearly you've never worked with that sort of heat. I have a pair of welding gloves I used exactly as you insisted they should have done. I can't wear the right one anymore because the right index finger completely shriveled and hardened from the heat. While I was wearing it. I kept them as a reminder.
Tongs were absolutely the right choice here.
my glove is burning what? lol wish he went till it burst into flames woulda gotten way more veiws then
Imagination out of control there tuff guy ???
to me to you lol
Sir no need to be frustrated. You can view all brass casting in its final finish stage here...wmhj.com
@BuickDoc Yeah, I guess I should've quoted Revelations 1:15 (KJV) as well, thanks.
The guy can't pour any faster and he keeps saying pour,pour,pour. duh!
+Micscience Speed of pour is important to slow you may end up with rejects.
way to burn your glove....
Man, right off the bat the guy on the right is being a knucklehead by being so casual in keeping his hands over the furnace too long when dropping the brass. Oh, maybe I should have used tongs instead. Enough for me to turn off video to avoid learning more mistakes. This is dangerous work, practice proper procedure!
Revelations 1:15 (King James version)
to meticulous about safety can tell your from the west picking them up 1 at a time haahahaha.
Scraping the brass with a steel screw driver shows a lack of maturity and reverence for the art and creation. Too bad, the old masters knew better.
amateurs
what is it?