My understanding of shell molding was that you heat up a metallic pattern and cover it with a sand-binder mixture. The heat from the pattern hardens the mixture close to the pattern. Then you remove the remaining mixture, leaving a hardened shell. Is the process described in the lecture (glue on pattern, sand sticks to glue) an alternative shell molding method?
The height of sprue seems to affect the inlet flow rate. What do you reckon the acceptable height of sprue should be if you don't want the turbulence to affect the product quality?
That's a very good question. You're right, the height of the sprue has a major impact on the flow rate. However, there are other things that have to be taken into account such as the density of the material, the viscosity, the nature of the mold and the cooling rate of the metal. All of those things have to be taken into account in order to decide on the correct sprue height.
Thank you for the response! I have revisited Part 3 of this video and realized this problem is included in your video. Definitely helpful for my future mold designs!
I looked through all your videos, you're missing one very important part of the process. I found nothing on how the various molds are made. I'm a retired patternmaker. Permanent molds, patterns, vacuum forms, rotomolds are all made by a patternmaker. Although a lot are now done with 3d printing, cnc, and designed on the computer. I did all of that. A cad designer, machinist or engineering cannot accurately design a pattern that works for a particular application without the knowledge a patternmaker has supplied. Either through books or direct contact. I have 40 years building patterns and tooling with wood metal plastic and plaster. And experience with cad/cam and manual machining for pattern and mold construction.
You are a genius!! Thank you so much
I'm glad that this helped!
Thankyou for an excellent and informative film. I have learnt so many things I plan to use in my small scale garden foundry for model engineering.
This is the module component I hate the most, but this video made it somewhat interesting and easy to remember. Thank you
Thanks a lot! That's why I do this.
saved my CETG 121 Module👍👏 love your video Proff
Very clear and helpful explanation! Thank you so much!!!
Thanks for watching!
The metal casting process is sand casting,very good videos, i like it.
U r just awesome i liked the vedio its beyond appreciations 👏👏👏
Thanks! I appreciate you watching!
My understanding of shell molding was that you heat up a metallic pattern and cover it with a sand-binder mixture. The heat from the pattern hardens the mixture close to the pattern. Then you remove the remaining mixture, leaving a hardened shell. Is the process described in the lecture (glue on pattern, sand sticks to glue) an alternative shell molding method?
I wish you were my course instructor. Thank you!
Thanks! I'm honored and I appreciate your feedback!
Such an amazing video!
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To create a Manganese Steel Railway, what method of casting would be used?
Thank you for the explanation, it is very clear -
The height of sprue seems to affect the inlet flow rate. What do you reckon the acceptable height of sprue should be if you don't want the turbulence to affect the product quality?
That's a very good question. You're right, the height of the sprue has a major impact on the flow rate. However, there are other things that have to be taken into account such as the density of the material, the viscosity, the nature of the mold and the cooling rate of the metal. All of those things have to be taken into account in order to decide on the correct sprue height.
Thank you for the response! I have revisited Part 3 of this video and realized this problem is included in your video. Definitely helpful for my future mold designs!
Thanks for sharing, it was informative. Cheers Peter
Very, very clear!...thanks!
Worthy video ❤
Thanks!
Thank you so much , very informative.
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Thank you sir
Thanks for watching!
I looked through all your videos, you're missing one very important part of the process. I found nothing on how the various molds are made. I'm a retired patternmaker. Permanent molds, patterns, vacuum forms, rotomolds are all made by a patternmaker. Although a lot are now done with 3d printing, cnc, and designed on the computer. I did all of that. A cad designer, machinist or engineering cannot accurately design a pattern that works for a particular application without the knowledge a patternmaker has supplied. Either through books or direct contact. I have 40 years building patterns and tooling with wood metal plastic and plaster. And experience with cad/cam and manual machining for pattern and mold construction.
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