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| Author | Topic: Barrel temp. Optimization |
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RBaratt Senior Member Posts: 12 |
posted February 15, 2005 11:33 AM
   
Would like feedback from others on their method of Barrel Temp optimization. IP: Logged |
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Steve H Moderator Posts: 341 |
posted February 15, 2005 03:03 PM
The feed zone barrel temp has the most influence on output, I start at the lowest temp recommended by the material supplier. I measure the output at that setting and verifify that the output meets my quality needs. Then I'll run at higher and lower temps in 5C steps, again measuring the amount of output in Kg/hr and quality. What I'n trying to find is the temp that gives the best co-efficient of friction for that material. If you do this, and plot a graph of output, against barrel temp, you'll get a bell shaped curve, the top of the bell is the optimum set point. The difference in output can be up to 10%, for some this might not be important, but if you are using a line that is too small for your needs, then every Kg/hr is vital. The transition zone has a slight effect on output and you can go through the same process for that zone too. You are also looking at what's happening with melt temp/pressure, etc. ------------------ If at first you don't succeed, skydiving is not for you. IP: Logged |
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