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Active Member
ashwinkumarnr
Posts: 10
Registered: ‎03-27-2012

Decicing Packing Time

247 Views, 4 Replies
01-22-2013 02:35 AM

Hi Everyone,

 

I want to know the different ways which you follow to decide upon the packing time for a given part.

How do you decide upon a particular value of packing time.

 

 

Thanks in advance,

Ashwin

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*Expert Elite*
madhukeshwart
Posts: 289
Registered: ‎03-18-2009

Re: Deciding Packing Time

01-23-2013 02:53 AM in reply to: ashwinkumarnr

During  moldflow flow analysis-Option-1. Find out gate freezing time. packing time = gate freezing time - fill time.

 

During mold trails- Option- 2.  Take a weight of each shot, by increasing packing time in each shot. once after weight becomes consistent .Freeze the packing time.  It can be within 5-6 shots,you can set packing time.

 

 

Madhukeshwar Talwar

FIAT-CHRYSLER ATC, Chennai
mail: madhukeshwart@gmail.com
09600060862
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*Expert Elite*
madhukeshwart
Posts: 289
Registered: ‎03-18-2009

Re: Decicing Packing Time

01-24-2013 01:47 AM in reply to: ashwinkumarnr

During  moldflow flow analysis-Option-1. Find out gate freezing time. packing time = gate freezing time - fill time.

 

During mold trails- Option- 2.  Take a weight of each shot, by increasing packing time in each shot. once after weight becomes consistent .Freeze the packing time.  It can be within 5-6 shots,you can set packing time

 

And also Time can be set based on required dimensions also. If dimensions are varying based on pack timing. Then it can be fine tuned with required dimensions.

 

 

Madhukeshwar Talwar

FIAT-CHRYSLER ATC, Chennai
mail: madhukeshwart@gmail.com
09600060862
======================================
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Active Member
ashwinkumarnr
Posts: 10
Registered: ‎03-27-2012

Re: Decicing Packing Time

01-24-2013 01:53 AM in reply to: madhukeshwart

Hi Madhu,

 

Thanks for your reply,

 

In simulation, do you really reccommend to pack till the gate freezing time, and again, this is dependant on the gate size i have used for simulation.

 

And by the way what is the best method, you think to find out the gate freezing time.

 

 

Option 2 is ok, for practical purposes.

 

 

Regards,

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*Expert Elite*
madhukeshwart
Posts: 289
Registered: ‎03-18-2009

Re: Decicing Packing Time

01-24-2013 03:10 AM in reply to: ashwinkumarnr

check a frozen layer fraction plot Or time to reach ejection tempearture for getting gate freezing time

 

But later wil give you 2-3 sec more than required for gate freezing time.

Madhukeshwar Talwar

FIAT-CHRYSLER ATC, Chennai
mail: madhukeshwart@gmail.com
09600060862
======================================
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