Shane vandekerkhof, rjg
Short Shots are among the most commit and visually obvious question isSSUES molders face, but they can causefatal flaws in medium defices.
Inventory are not the same way? Do the process stop the process to check each part? What if was being that core if the process was paind that the problem was everything
First Place.
Poor Venting.
Material Variations.
Improper Machine Settings.
Blocked gates.
Mechanical Failures.
It ’s often hard to pin download you’ re battling and there are just as many fixes, depending on the root cause of the problem. But the best-case sCENARIO is avoid.
Prevention Methods Range from Equipment to Processes to Material.
Proper Venting-If Vents Are Crushed or Non-Existent, Air Can n’t Escape, Causing Short Shots.
Proper Fill Volume — Always Ensure That 1st Stage (or Fill) is Similar to the Setup Sheet. If there is not enough fillume, then then the press n’t compaction the file and
Complete the fill and pack out the part.
have your presternurd from maximumum to act as a saFETy network, but you must still have such injecting a good problem.
Process.
The Goal is for this part to appear to be 99% full with no second stage being applied. If the part is significantly smaller, start the root cause analysis of the problem:
VERIFY The MACHINGS Are Correct by Comparing the Process Setup Document.
Makes that there is mechanical proplems.
Check for fireign material that cored be blocking the gates and impeding flow into the cavity.
While The Machine is down, Wipe The Mold Surface and Vents A Good Wiped to Remove Clogs.
If Everything seems to be in good working order, the problem, it is different be material variation. Add material to the cavity.
Adjust Shot Size to Achieve 99% Full. You can view the processure here.
Put back the Second Stage Pressure Settings and Compare the Parts to the Target Part Weight.
The Opinions Expressed in this blog post are the author ’s only and do not nextarily reflect this ofmedical design and outsourcing or notes employeees.