Isi ihe asaa ga-arịba ama n'ime ịkpụzi injection injection

Njirimara na usoro usoro nke ịkpụzi injection plastik na-emetụta ọtụtụ akụkụ. Plastics dị iche iche kwesịrị ịmepụta paramita na-emepụta ihe kwesịrị ekwesị maka ihe onwunwe ha iji nweta ihe kacha mma n'ibu.

Ebe a na-akpụzi injection bụ ndị a:

Otu, ọnụego mbelata

Ihe ndị na-emetụta mpụta shrinkage nke thermoplastic plastik bụ ndị a:

1.Ụdị plastik

2.The size na Ọdịdị nke ịkpụzi ebu. Oke mgbidi buru ibu ma ọ bụ usoro jụrụ oyi na-adịghị mma nwere ike imetụta mbelata. Tụkwasị na nke ahụ, ọnụnọ ma ọ bụ enweghị ihe ntinye na nhazi na ọnụ ọgụgụ nke ntinye na-emetụta kpọmkwem usoro ntụgharị, nkesa njupụta na nkwụsị nkwụsị.

3. Ụdị, nha na nkesa nke ọnụ ihe. Ihe ndị a na-emetụta kpọmkwem ntụziaka nke ntinye ihe, nkesa njupụta, nrụgide nrụgide na nkwụsịtụ mmetụta na ịmepụta oge.

4.Mold okpomọkụ na injection mgbali.

Igwe ọkụ na-ekpo ọkụ dị elu, njupụta gbazere dị elu, ọnụego nkwụsị nke plastik dị elu, karịsịa plastik nwere nnukwu crystallinity. Nkesa okpomọkụ na ịdị njupụta nke akụkụ plastik na-emetụtakwa mbelata na ntụzịaka ozugbo.

Njide nrụgide na ogologo oge na-enwekwa mmetụta na nkwekọrịta. Nrụgide dị elu, ogologo oge ga-ebelata ma ntụziaka ahụ buru ibu. Ya mere, mgbe ebu okpomọkụ, nrụgide, injection ịkpụzi ọsọ na jụrụ oyi na ihe ndị ọzọ nwekwara ike ịbụ ihe kwesịrị ekwesị ịgbanwe shrinkage nke plastic akụkụ.

Ebu imewe dị ka a dịgasị iche iche nke plastic shrinkage nso, plastic mgbidi ọkpụrụkpụ, udi, ndepụta ntinye ụdị size na nkesa, dị ka ahụmahụ iji chọpụta shrinkage nke ọ bụla akụkụ nke plastic, mgbe ahụ gbakọọ oghere size.

Maka akụkụ rọba dị elu nke ọma na ọ siri ike ịghọta ọnụ ọgụgụ nke shrinkage, ọ bụ ihe kwesịrị ekwesị iji ụzọ ndị a iji chepụta ebu:

a) Were obere shrinkage nke akụkụ rọba na dayameta dị n'èzí na nnukwu shrinkage iji nweta ohere maka mgbanwe mgbe nyochachara ebu.

b) Nnwale ebu iji chọpụta ụdị usoro nkedo, nha na ọnọdụ nhazi.

c) A na-ekpebi ngbanwe nha nke akụkụ plastik a ga-emezigharị mgbe emezigharị ya (ntụgharị ahụ ga-abụrịrị awa 24 mgbe ịpụsịrị).

d) Gbanwee ebu dị ka n'ezie shrinkage.

e) Enwere ike ịmegharị ọnwụ ahụ na ọnụ ahịa shrinkage nwere ike gbanwee ntakịrị site n'ịgbanwe usoro usoro n'ụzọ kwesịrị ekwesị iji mezuo ihe ndị a chọrọ nke akụkụ plastik.

Nke abụọ,Mmiri mmiri

1. A na-enyochakarị mmiri nke thermoplastics site na usoro nke index dị ka ịdị arọ molecular, index gbazee, Archimedes spiral flow length, viscosity performance and flow ratio (flow length/plastic wall ọkpụrụkpụ). Maka plastik nke otu aha ahụ, a ga-enyocha nkọwapụta iji chọpụta ma mmiri ha dabara adaba maka ịkpụzi injection.

Dị ka ihe chọrọ imewe ebu si dị, enwere ike kewaa mmiri nke plastik ndị a na-ejikarị n'ime ụzọ atọ:

a) Ezi fluidity nke PA, PE, PS, PP, CA na polymethylthyretinoene;

b) Usoro resin polystyrene na-eru ala (dị ka AS ABS, AS), PMMA, POM, polyphenyl ether;

c) PC na-adịghị mma, PVC siri ike, polyphenyl ether, polysulfone, polyaromatic sulfone, fluorine plastic.

1. Mmiri nke plastik dị iche iche na-agbanwekwa n'ihi ihe dị iche iche na-emepụta. Ihe ndị bụ isi na-emetụta bụ ndị a:

a) Okpomọkụ. Igwe ọkụ dị elu ga-eme ka mmiri dị elu, ma plastik dị iche iche dịkwa iche iche, PS (karịsịa mmetụta nkwụsị na uru MFR dị elu), PP, PA, PMMA, ABS, PC, CA plastic liquidity na mgbanwe okpomọkụ. Maka PE, POM, mgbe ahụ okpomọkụ na-abawanye na mbelata nwere obere mmetụta na mmiri mmiri ha.

b) Nrụgide. Injection ịkpụzi nrụgide na-abawanye agbaze site shii edinam, liquidity na-abawanye, karịsịa PE, POM bụ ihe mmetụta nke ukwuu, otú oge nke injection ịkpụzi nrụgide ịchịkwa eruba.

c) Ọdịdị anwụ. Dị ka wụsa ụdị usoro, nha, okirikiri nhọrọ ukwuu, jụrụ oyi usoro, iyuzucha usoro na ihe ndị ọzọ na-emetụta kpọmkwem eruba nke gbazere ihe n'ime oghere.

Akpụkpọ anụ kwesịrị ịdabere n'iji ntinye plastik mee ihe, họrọ usoro ezi uche dị na ya. Ịkpụzi nwekwara ike ịchịkwa okpomọkụ nke ihe onwunwe, ọnọdụ okpomọkụ na nrụgide injection, ọsọ injection na ihe ndị ọzọ iji dozie ndochi nke ọma iji gboo mkpa ịkpụzi.