directional solidification

[isd88]

hello to all, our project progresses great, thanks to you I found the right material for our wheel and casting brackets, but now we have come across a blind alley: directional solidification

Here's the problem: Our geometry is such that between 2 parts with a relatively low thermal module there is one with a very high thermal module. the three zones I will call them b c.

the area to present a thermal module of 9,6
zone b 11,2
the area c 8,4

(millimeter values)

Unfortunately zone 2 is inaccessible so the materozzes should insert them in a or c. we divided the task and to me is touched the solution "in some way insulated to"

I have done all my calculations and found that theoretically if I can artificially increase the thermal module by 30% the problem is solved.

that you know there is a way to insulate a part of the jet into the foundry on earth?

 

[incapace]

you can insert insulating sleeves, or you can use mixtures that lower the melting pot but pollute the jet....
or put coolers in opposite areas.

 

[luigi.paiano]

the only possibility I see is that of the coolers. Can you have the design of the shape?

 

[Er Presidente]

You got me a hit!
I had never heard of "rolidification" and I thought I was definitely recoupled!

:biggrin:

 

[Ste_d]

placed a design of the shape, I am also working on the fusion in my project... what I recommend is to put wide rays of connection between the side and the central part in order to bring about directional solidification (method of heuers circles or as it is called). Conceptually, the materozza is to be put in hot spots, so it's wrong to put it where you say... you can't blind it? or put some coolers... the best thing would be to review the project and predict lightenings in the larger module part to lower the volume and consequently the module.

 

[luigi.paiano]

yes, most likely the project should be revised. there are many methods but if we do not see the design it is impossible to find a solution

 

[SHIREN]

you can insert insulating sleeves, or you can use mixtures that lower the melting pot but pollute the jet....
or put coolers in opposite areas.

hello to all, our project progresses great, thanks to you I found the right material for our wheel and casting brackets, but now we have come across a blind alley: directional solidification

Here's the problem: Our geometry is such that between 2 parts with a relatively low thermal module there is one with a very high thermal module. the three zones I will call them b c.

the area to present a thermal module of 9,6
zone b 11,2
the area c 8,4

(millimeter values)

Unfortunately zone 2 is inaccessible so the materozzes should insert them in a or c. we divided the task and to me is touched the solution "in some way insulated to"

I have done all my calculations and found that theoretically if I can artificially increase the thermal module by 30% the problem is solved.

that you know there is a way to insulate a part of the jet into the foundry on earth?

you have to instigate the bats
but this serves to maintain temperature
not to cool

 

[isd88]

Sorry for the answers! What are these insulating sleeves? Are they only worth the materozze? I would like to insulate part of the jet...however I understand that the only feasible solution is the coolers

here is the design of the finished object that they go to realize


uploaded with imageshack.usand here is the quoted design of a section of the piece with the circles of heuvres put just to remind me how little virgin the Madonna is


uploaded with imageshack.usif it is not possible to increase the thermal module of the outer ring some can please link me to a calculation table of the refiners?

 

[luigi.paiano]

I'm sorry, what's the problem? It seems to me that directional solidification goes well, just put the materozza in the area where there is the largest circle

 

[luigi.paiano]

the only problem is the central part, resolvable with wide connection rays!

 

[isd88]

The problem is the central, but how can I solve it with the fitting angles? even doing the round excavation remains problematic!

 

[Ste_d]

If you want to know what I'm saying, I'm working on it. in the central part doubles the connection beams between the 2 rings and put 2 cynical materozzes (or 3 or 4 depends on the calculations what you see) on the outer ring. in practice you would put 2 diametrically opposite or 3 to 120° or 4 to 90°... Make 2 accounts and see what range of influence they have and consequently decide how many they want to cover you all! the most module part is that of the outer ring, isn't it?! Because it's in that part that you have to put the bats!

ps: wheel teeth I hope you will do them later for milling. . .

 

[luigi.paiano]

raise the connection rays!! the cooling module in that area you find it with the circle inscribed in that area!! Do so that the module is about 1,1 1.2 times that of the left side. then put a materozza on the outer ring.according to me one!sai how does the right materozza measure? ? ?
that then putting the straightness you have a radius of influence that I think it also involves the critical part!if you want to be even safer put a cooler left,but I think it is absolutely unnecessary

 

[luigi.paiano]

basically that quota of 18,3 must become much smaller and more connect the understood area?

 

[isd88]

It is clear to me, but I cannot lower that quota, increase the thermal module! and then that of the outer ring is not enough to guarantee me directional solidification. Are you working on a similar project?

 

[luigi.paiano]

Excuse me, you know, but solidification starts from the area with a lower thermal module to the higher one.
then begins from the inner ring, then goes in the middle part (but designing the connection rays) and finally goes on the outer ring but inserting a materozza!
the thermal module of the central zone must be intermediate between the two rings or not?

 

[luigi.paiano]

look well at the theory because maybe you're making confusion

 

[Ste_d]

semmai edits previous posts if you are still in time do instead of writing new ones:finger:

as it rightly says luigi solidification starts from the lower module area and hand moves in the higher module areas... then departs from the inner ring where there is the smaller circle and proceeds towards the bigger circle i.e. the outer ring! Although the central area seems very thin for which I would like to know precisely the modules of the 3 zones to better assess. If things were so you have to put at least one blind straightness on the outer ring but if you want to achieve directional solidification as you must at least double those connection rays because they are tiny... do at least r15-r20:finger:

If you want more targeted help post the modules of the 3 parts in question, you must check if there is actually at least a difference of 10% between the parties and consequently that direction has solidification. . .

 

[isd88]

That was wonderful, thank you! So I'll change the connection rays as soon as I can, but what does it tell me how much to do them? on our book is written "it suggests industrial practice" .... Well, if I had a foundry, it was pretty simple, but I don't have it!

Secondly, the cynical materozzes we didn't treat them in the course, why? Is that cool?

 

[isd88]

I put it in the first post :d changes a lot considering the fittings?