Q & A
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| TOPIC: Stuck Part Removal Techniques | |||
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Submitted: May, 2009 |
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Appropriate stuck part removal methods obviously depend upon the configuration of the part you are trying to remove and what exactly is holding
it in the cavity.
Regardless, basic principles still apply. First, it is never a good idea to pry between the part and the cavity with any kind of tool. Even soft metals like brass and aluminum can roll over a parting line or scar the cavity walls. Small round parts can be removed safely by heating the threads of an appropriately sized eyebolt and carefully pushing it into the cavity. Use air to speed cooling and simply pull it out. If it happens often, fabricate a special tool with puller threads at perimeter locations. Lastly, train your process technicians on how to start/run molds without sticking the parts, or fix the mold. ------------------------------------------------------------- Submitted on 5/15/2009 Threads work ok on thick parts and sprues but most parts are thin and flat. Perforated sheet steel heated dull cherry red and pushed into the part work better for flat parts. Each hole generates it own mushroom head that has more surface area than a screw. Modify a pair of vice grips into a small slide hammer to grab
on to the sheet metal and pull with. |
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