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Plastic injection molding

Plastic injection molding is the primary process for manufacturing plastic parts used in consumer goods such as computer keyboards, monitors, bottle caps, cups and solid plastic articles. Plastic is known to be a very versatile and economical material that is used in many applications. Injection molding involves taking plastic in the form of pellets or granules and heating this material until a melt is obtained. Then the melt is forced into a split-die chamber/mold where it is allowed to "cool" into the desired shape. The mold is then opened and the part is ejected, at which time the cycle is repeated.

Contributors in Plastic injection molding

Plastic injection molding

vandoptagelse

Manufacturing; Plastic injection molding

Mængden af vand, der absorberes af en plast artikel når nedsænket i vand i en fastsat periode. Alle plast vil absorbere fugt til en vis grad.

smelte index

Manufacturing; Plastic injection molding

Mængden af en termoplastisk harpiks, målt i gram, som kan være tvunget gennem en angivet blænde inden for ti minutter når de udsættes for en bestemt styrke. (ASTM D-1238)

strømningsmønster

Manufacturing; Plastic injection molding

Contour smelte tager sekventielt, da det fylder hulrum.

fyldmønster

Manufacturing; Plastic injection molding

konturerne af forskuddet af materiale som hulrum fylder. (Se strømningsmønster)

stress-strain kurve

Manufacturing; Plastic injection molding

Kurven plotte anvendt stress på et prøveemne versus den tilsvarende stamme. Stress kan anvendes gennem shear, komprimering, flexure eller spændinger.

lineær skimmel svind

Manufacturing; Plastic injection molding

Forskellen mellem størrelsen af del og størrelsen af formen hulrum. Værdier er ofte gennemsnit af et udvalg.

svind godtgørelse

Manufacturing; Plastic injection molding

Den dimensionale ydelse, som skal foretages i forme til at kompensere for svind af plast sammensatte på køling.

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