• This forum is the machine-generated translation of www.cad3d.it/forum1 - the Italian design community. Several terms are not translated correctly.

gas assisted molding - gaim

  • Thread starter Thread starter Daniele-san
  • Start date Start date

Daniele-san

Guest
Good morning, guys.
I wanted to ask you if you knew how to approximate the cost difference between an ignition mold for plastics with and without gas, logically at equal part.
and at this point also the percentage difference of the cost of the piece

Thank you.
Hi.
 
hi daniele, the cost of the mold, by itself, is not altered very much, considers that it is necessary "only" to apply the nozzles for the nitrogen in the right points. if a company already owns all the equipment to print injection with gas, on important pieces of thickness, there are many savings, generated by lightening the piece and the consequent reduction cycle time.
evaluations should be made by knowing the piece to print.
remember that the gas, never goes where it is hypothesized, and often it is necessary to intervene on the mold to properly place the nozzles.
 
Dade73 said:
hi daniele, the cost of the mold, by itself, is not altered very much, considers that it is necessary "only" to apply the nozzles for the nitrogen in the right points. if a company already owns all the equipment to print injection with gas, on important pieces of thickness, there are many savings, generated by lightening the piece and the consequent reduction cycle time.
evaluations should be made by knowing the piece to print.
remember that the gas, never goes where it is hypothesized, and often it is necessary to intervene on the mold to properly place the nozzles.
Click to expand...
hi dade73,
thanks for the answer,
I attach a stp to show you, it's a cap so that the extraction direction can't change it, you'll notice that in the unspoiled part (on the radiated perimeter) the thickness is almost twice that of the particular
I think the gas is the best system to avoid retreats on the outside or do you think there are other solutions?

Thank you.
Hi.
 

Attachments

Here I am.

if for various reasons, you are forced to shape with those thicknesses of material, yes, the gas remains a great possibility; Clearly, if you do not need such important thicknesses, everything would be rediscussed.

thanks to you
davide
 
Dade73 said:
Here I am.

if for various reasons, you are forced to shape with those thicknesses of material, yes, the gas remains a great possibility; Clearly, if you do not need such important thicknesses, everything would be rediscussed.

thanks to you
davide
Click to expand...
thanks to you,
Unfortunately I can't go down below these thicknesses, I have to stay on about 3.0mm

Hello!
 
a little more economical solution is to equip the press of a system that mixes the gas directly inside the cylinder, so you can use a "traditional" mold and also you can reuse it for more items.
 
TECNOMODEL said:
a little more economical solution is to equip the press of a system that mixes the gas directly inside the cylinder, so you can use a "traditional" mold and also you can reuse it for more items.
Click to expand...
hi technomodel,
Are you talking about expanding? if you, it can also be used on parts in abs?
take also into account that the printed part is not to be painted and must have an electroerous or photonescent surface
 
technomodel, in my opinion, was referring to mucell technology, among other things abandoned by many machine manufacturers.
if the product should be painted, I would not opt for porophile agents, the surface of the artifact, is very sensitive.
daniele, the first time, I took a very busy look at the file you sent, from the point of view of transformation and finished product, I don't see any difficulty in making the piece as...... .
if there are no immense pulls, for which it is worth making the piece more econimically, I would go for the classic mold
 
Dade73 said:
technomodel, in my opinion, was referring to mucell technology, among other things abandoned by many machine manufacturers.
if the product should be painted, I would not opt for porophile agents, the surface of the artifact, is very sensitive.
daniele, the first time, I took a very busy look at the file you sent, from the point of view of transformation and finished product, I don't see any difficulty in making the piece as...... .
if there are no immense pulls, for which it is worth making the piece more econimically, I would go for the classic mold
Click to expand...
There is also other, similar to the mucell but in my opinion more functional.
basically injects nitrogen into the cylinder, the same is mixed with polymer and you get weight reduction and decrease of the retreats.

However, if it is painted, I would say that you have no problem.
 
exact, however, there is also a "portable" system that can be applied to almost all presses with small changes to the cylinder.
 
Dade73 said:
technomodel, in my opinion, was referring to mucell technology, among other things abandoned by many machine manufacturers.
if the product should be painted, I would not opt for porophile agents, the surface of the artifact, is very sensitive.
daniele, the first time, I took a very busy look at the file you sent, from the point of view of transformation and finished product, I don't see any difficulty in making the piece as...... .
if there are no immense pulls, for which it is worth making the piece more econimically, I would go for the classic mold
Click to expand...
Bye to all,
I basically agree with dade. unless there is such a pull to justify a weight reduction, I would remain on a traditional solution. I wouldn't leave me thinking about 3mm.
 
yudansha said:
Bye to all,
I basically agree with dade. unless there is such a pull to justify a weight reduction, I would remain on a traditional solution. I wouldn't leave me thinking about 3mm.
Click to expand...
Hi.
I quote your post...but it also applies to others who participated in the discussion
If you have time to make a section of that "draw" I posted to you...you will notice that in an area there is a double thickness compared to the 3mm of the particular.
I don't think with a classic molding you can't have superficial defects
I also reiterate that the detail will not be painted and will have an electroerosion or photo engraving surface.
 
daniele, I have seen the thick leap, do not worry, from the aesthetic point of view and superficial risucchi, you manage everything in the molding stage, the only dispersion is the cycle times and the cost generated by the mass of the material.
 
You may have a little retreat inside, even in my opinion you can manage quite quietly in molding.
 
direct gate and away. the bond will be the cycle time that stretches, but you should not have big problems to compact. at the limit I would launch a simulation for verification.
If the surface is embossed, I would be very careful about the changes in thickness.
 
yudansha said:
direct gate and away. the bond will be the cycle time that stretches, but you should not have big problems to compact. at the limit I would launch a simulation for verification.
If the surface is embossed, I would be very careful about the changes in thickness.
Click to expand...
Thank you.
I'm afraid of the aesthetic result of the embossed outer surface
 
Can't you put a throat in the inner part so that the thickness remains constant or almost?
 

Forum statistics

Threads
44,997
Messages
339,767
Members
4
Latest member
ibt

Members online

No members online now.
Total: 0 (members: 0, guests: 0)
Back
Top