Actually the metal is poured into a what is called a SPRUE, the runner is what connects the sprue to the GATE(or Ingate) which feeds the cavity left by the pattern. The riser actually is used to feed the casting in compensation for shrinkage, not all risers are open to the surface some are blind, particularly with cast irons.
The degassing tablets do little good if you don't use a plunging bell to push them to the bottom of the melt. These tablets work by decomposing and releasing chlorine gas, which removes the dissolved hydrogen. You will waste a lot less metal if you put a drossing flux on top of the melt at the time you degass the metal. Once the degassing is complete, mix the drossing flux into the aluminum to capture contaminants, like bits of sand and aluminum oxide. If you add a bit of powdered CaF to the drossing flux, the dross will drain better, again saving metal. The CaF breaks down to release fluorine, which breaks the surface tension of the metal. You should also coat your tools with something like Micawash or better yet, boron nitride, to keep them from contaminating the melt with iron. You sort of have the right idea in that you are using a face shield, but it is better to use one with a helmet. If you splash or pop the metal, chances are that some will land in your hair without a helmet.
A riser is to provide extra molten metal to help feed the casting . Vents are to let gas and air escape(which a riser that is open to the surface also does)
The issue isn't even on proper pronunciation, it's on spelling. Sir Humphrey Davy, the discoverer of aluminum and many other elements, went through three names for the element. Alumium, Aluminum, and Aluminium. Aluminum just happened to stick in America because of its increased use in their dictionaries, forcing it to be adopted by the people. However, Aluminium has been declared the standard since 1990. It just takes time to change.
Well done! Wiki: "Hall is considered the originator of the American spelling of aluminum. According to Oberlin College, he misspelled it on a handbill publicizing his aluminum refinement process. The process was so revolutionary, and brought the metal to such prominence, that Americans have spelled aluminum with one "i" since. In the United Kingdom and other countries using British spelling, only aluminium is used. The spelling in virtually all other languages is analogous to the -ium ending.
i did this at home...heated up my crusipal to much and it melted, burned a hole through my plaster of paris through my steel bucked and into my patio!!!
Indeed. I can imagine American freedom being a very loud affair. I would assume it's probably hard to distinguish between that and a firing squad. With all that freedom I suppose spelling and grammar become less important. You are forgiven. :)
I hope you do realize that your Canadian brothers use the same dialect of English that is used in the various United States. Otherwise, we at least, have the freedom to buy all of the aluminum we want. :)
Think about the English language for just a second. Where do you think English originated? And, do you not think that the country of the languages origin would be best able to speak said language?
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Cleanest shop I've ever seen.
Actually the metal is poured into a what is called a SPRUE, the runner is what connects the sprue to the GATE(or Ingate) which feeds the cavity left by the pattern. The riser actually is used to feed the casting in compensation for shrinkage, not all risers are open to the surface some are blind, particularly with cast irons.
i think these videos are very helpful to students and teachers and respect your 2000 subscribers
The degassing tablets do little good if you don't use a plunging bell to push them to the bottom of the melt. These tablets work by decomposing and releasing chlorine gas, which removes the dissolved hydrogen. You will waste a lot less metal if you put a drossing flux on top of the melt at the time you degass the metal. Once the degassing is complete, mix the drossing flux into the aluminum to capture contaminants, like bits of sand and aluminum oxide. If you add a bit of powdered CaF to the drossing flux, the dross will drain better, again saving metal. The CaF breaks down to release fluorine, which breaks the surface tension of the metal. You should also coat your tools with something like Micawash or better yet, boron nitride, to keep them from contaminating the melt with iron.
You sort of have the right idea in that you are using a face shield, but it is better to use one with a helmet. If you splash or pop the metal, chances are that some will land in your hair without a helmet.
A riser is to provide extra molten metal to help feed the casting . Vents are to let gas and air escape(which a riser that is open to the surface also does)
lol is the sand casting body there made of aluminum itself? Thats pretty swag compared to typical wood ones.
The issue isn't even on proper pronunciation, it's on spelling. Sir Humphrey Davy, the discoverer of aluminum and many other elements, went through three names for the element. Alumium, Aluminum, and Aluminium. Aluminum just happened to stick in America because of its increased use in their dictionaries, forcing it to be adopted by the people. However, Aluminium has been declared the standard since 1990. It just takes time to change.
Well done! Wiki: "Hall is considered the originator of the American spelling of aluminum. According to Oberlin College, he misspelled it on a handbill publicizing his aluminum refinement process. The process was so revolutionary, and brought the metal to such prominence, that Americans have spelled aluminum with one "i" since. In the United Kingdom and other countries using British spelling, only aluminium is used. The spelling in virtually all other languages is analogous to the -ium ending.
So...I probably shouldn't do this in my house
you could with only precautions
i did this at home...heated up my crusipal to much and it melted, burned a hole through my plaster of paris through my steel bucked and into my patio!!!
Indeed. I can imagine American freedom being a very loud affair. I would assume it's probably hard to distinguish between that and a firing squad. With all that freedom I suppose spelling and grammar become less important. You are forgiven. :)
muy practico y limpio
We speak American English NOT the Queen's English.
The proper pronunciation... as per the Queen's English... from England.
I really like die casting process
looks like you got a bit of shrinkage on that one.
I hope you do realize that your Canadian brothers use the same dialect of English that is used in the various United States. Otherwise, we at least, have the freedom to buy all of the aluminum we want. :)
Didn't know Americans can't spell aluminium up until now.
Anyone who lives under the monetary system is not "free".
You did do that in a. School.
alaminyam
So what you're saying is you speak American :) Because it surely isn't English.
Anyway, cool video!
The more you know...
Platinum
Think about the English language for just a second. Where do you think English originated? And, do you not think that the country of the languages origin would be best able to speak said language?
Sorry, Britons, we can't hear you pronouncing things correctly over the sound of our FREEDOm!
un insulto al oficio.