In this episode Gordon explains how to prevent or manage and work with porosity in pressure die casting projects. Have you ever had to deal with porosity in your die casting projects? What was your experience?
Hello Gordon, I have fully watched your video and have to disagree to at least 70% of the content of your video. I was working at LKR till last year (video you showed from the SUSTAINair H2020 Project was shot at our plant) and your mentioned short shot was intended to occour in that case. A short shot is something you do to set up your casting process and break it down into your 3 phases for perfect machine parameters. Next up you can definitely manage the entrained air - but why not mentioning the 1. phase? This phase is crucial for the porosity in your casted part. The simulations you showed were quite bad and should not be applied to the real casting itself - you should have mentioned it to make that one clear. Also a vacuum system is definitely not "highly unpractical"... the system is just as smart as it's user :-) and last but not least your recommended alloys... the most common alloys in die-casting are A226 and Silafont-36. Yes the eutectic alloys are well known for a good casteability but they do not have an inpact on the amount of porosity in your casted part. Regarding the mole fraction to mass fraction higher porosity can occour but just if you play bad with your temperatures.
In this episode Gordon explains how to prevent or manage and work with porosity in pressure die casting projects. Have you ever had to deal with porosity in your die casting projects? What was your experience?
Hello Gordon, I have fully watched your video and have to disagree to at least 70% of the content of your video. I was working at LKR till last year (video you showed from the SUSTAINair H2020 Project was shot at our plant) and your mentioned short shot was intended to occour in that case. A short shot is something you do to set up your casting process and break it down into your 3 phases for perfect machine parameters. Next up you can definitely manage the entrained air - but why not mentioning the 1. phase? This phase is crucial for the porosity in your casted part. The simulations you showed were quite bad and should not be applied to the real casting itself - you should have mentioned it to make that one clear. Also a vacuum system is definitely not "highly unpractical"... the system is just as smart as it's user :-) and last but not least your recommended alloys... the most common alloys in die-casting are A226 and Silafont-36. Yes the eutectic alloys are well known for a good casteability but they do not have an inpact on the amount of porosity in your casted part. Regarding the mole fraction to mass fraction higher porosity can occour but just if you play bad with your temperatures.
Vacuum die casting is the standard for hypereutectic piston manufacture and has been for a while. Nothing "stupid" about it at all.
On the other side...
There are many development on metal foam parts, which are "full with porosity"...
how about yamaha DiASilb technology?
Can CAST IRON prevent porosity
nice pc you got there.... (simulation math go brrrrrrrrrrr)
👍
Good contents. Could adding feeders solve the porosity in some degree?