Degun ni waati minɛni — daɲɛ fila minnu bɛ fanga minɛ ka i ka pikiri-fɛn-yɔrɔw dilan walima k’u tiɲɛ. Miiri k’a filɛ i n’a fɔ makiyaji sɛgɛsɛgɛli yɔrɔ min na, o yɔrɔ la, a ka kalan laban bɛ sɔrɔ yɔrɔ min na. A sɔrɔ ka ɲɛ, ani i ye i yɛrɛ sɔrɔ yɔrɔ min labɛnnen don pankurun boliyɔrɔ kama. Aw ye a sɔrɔ cogo jugu la, wa a bɛ segin jabɔlan kan. Bi, an ka kuma nin taamasiyɛnba in mastering kan min bɛ plastiki wuli ka bɔ zero la ka kɛ hero ye.
Pikiri kɛcogo faamuyali .
Pikiri kɛcogo bɛ kɛ ni:
1.Fill step: Fɔlɔ kɔnɔna fasa (95-98%) .
2.Pack Step : ka shrinkage sara .
3.Hold step : ka degun mara fo ka se gate freeze .
Kalan dɔ kɛra diɲɛ kɔnɔ polimɛri baarakɛcogo gafe kɔnɔ, o y’a jira ko nin wale ninnu ɲɛnabɔli bɛ se ka kɛ sababu ye ka jiginni waati dɔgɔya fo ka se 12% ma, ka sɔrɔ ka yɔrɔ ɲuman mara.
Nafa min bɛ a la ka pakew labɛn ani ka u minɛ waatiw la .
hali waati kɔlɔsili compound. Ni optimisation ye, an bɛna sɔrɔ:
1,5 segin min bɛ mara siɲɛ kelen na .
Yɔrɔ 300 000 bɛ bɔ san o san .
o kɛra sababu ye ka sanga 125 bɔ a dilanni waati la san kɔnɔ .
Yɔrɔw ka jogoɲumanya ban hakɛw dɔgɔyara ni 22% ye .
Fɛnw nafa bonya cayara ni 5% ye .
Sɛnɛ musaka bɛɛ lajɛlen bɛ dɔgɔya ni 8% ye .
Minɛni degun .
Fɛn min bɛ degun minɛ pikiri kɛli la .
Minɛni degun ye fanga ye min bɛ kɛ plastiki wulilen na, nɔgɔbɔlan falen kɔfɛ. A bɛ baara nafama caman kɛ:
1.compensates for material shrinkage ni a yɔrɔ bɛ nɛnɛ .
2.A bɛ a lajɛ ni a yɔrɔw density ani dimension accuracy .
3.A bɛ fiɲɛw bali i n’a fɔ jisigiyɔrɔw ni yɔrɔ lakolonw .
A ka ca a la, minɛ tansiyɔn bɛ dɔgɔya ka tɛmɛ pikiri fɔlɔ tansiyɔn kan, a ka ca a la, a bɛ daminɛ pikiri tansiyɔn 30-80% la, ka kɛɲɛ ni fɛn ye ani a yɔrɔ dilanni.
Tɛmɛsira yɔrɔ .
Tɛmɛsira yɔrɔ in bɛ taamasiyɛnba jira pikiri ni minɛni fasaw cɛ. Sɛgɛsɛgɛli minnu kɛra Masasi Iniwɛrisite Lowell fɛ, olu b’a jira ko tɛmɛsira tigitigiw kɔlɔsili bɛ se ka dɔ bɔ yɔrɔ girinya caman ɲɔgɔnna na fo ka se 40% ma.
Nin ye tɛmɛsira yɔrɔw tilatilali ye ka ɲɛ:
| Fɛn suguya | suguya taamasiyɛnw | bɛ sɔrɔ cogo min na . |
| Sariya | 95% falen don . | A bɛnnen don baara fanba ma . |
| Kogo finmanw . | 98% falen don . | A bɛ marifa surunw bali . |
| Balannako tɛ . | 70-80% falen . | A bɛ balanbaliya musaka bɔ . |
| Kogow ka bon . | 90-92% falen . | A bɛ a bali ka fɛnw kɛ ka tɛmɛ a dan kan . |
Tɛmɛsira yɔrɔw bɛ danfara kosɛbɛ ka da yɔrɔ jateminɛcogo ni fɛnw cogoya kan. Fɛn minnu bɛ kɛ ka kɛɲɛ ni sariya ye, olu bɛ nafa sɔrɔ fasa dafalen na sani u ka wuli. Fɛn minnu kogo finmanw bɛ yen, olu bɛ ɲini ka kɛ kɔnɔna dafalen dafalen ye walasa ka yɔrɔ bɛnnenw sɔrɔ. Dilancogo minnu tɛ balansi sɔrɔ, olu mago bɛ jiginni ɲɛfɛ walasa ka jibɔ danfara ɲɛnabɔ. Fɛn minnu kogow ka bon, olu bɛ wuli ka kɔn o ɲɛ walasa u kana pake kojugu. Kɔsa in na, simulatigɛ porogaramuw ɲɛtaa bɛ sira di tɛmɛsira ɲumanw fɔli ma tigitigi, ka sigili waati ni fɛnw tiɲɛni dɔgɔya.
Minɛni degun bɛ nɔ min bila yɔrɔw la minnu dilannen don .
Minɛn minɛcogo dɔgɔyali nɔ .
Minɛni degun dɔgɔyali bɛ se ka kɛ sababu ye ka koɲɛw caya. San 2022 kalan dɔ kɛra The International Journal of Precision Engineering and Manufacturing kɔnɔ, o y’a jira ko yɔrɔ minnu dilannen don ni degun minɛbaliya ye, olu y’a jira ko:
15% bɛ fara jibolisiraw kan .
8% dɔgɔyali yɔrɔ girinya la .
12% bɛ dɔgɔya tension fanga la .
O fiɲɛw bɛ bɔ plastiki wulilen degunbaliya la nɔgɔbɔlan kɔnɔ, o b’a jira ko tansiyɔn sigicogo bɛnnen nafa ka bon.
Minɛni degunba nɔfɛkow .
O cogo kelen na, degun kojugu tɛ jaabi ye. Degun kojugu bɛ se ka kɛ sababu ye ka:
Aw bɛ se ka dɔ fara kan 25% . kɔnɔna degunw
10-15% farati ka bon ka tɛmɛ mɔni kan ka kɔn a waati ɲɛ .
5-8% ka fara fanga sɔrɔli kan .
Tansiyɔnba bɛ plastiki caman wajibiya ka don nɔgɔ la, o bɛ na ni o gɛlɛyaw ye ani ka nɔgɔw ka ɲɛnamaya surunya.
Minɛn min bɛ mɔgɔ minɛ cogo ɲuman na .
Ideal Holding Pressure bɛ balansi nɔgɔlen sɔrɔ. Plastiki industry association ka sɛgɛsɛgɛli bɛɛ lajɛlen dɔ y’a jira ko minɛ degun ɲuman bɛ se ka kɛ:
Aw bɛ fɛnɲɛnamafagalanw hakɛ dɔgɔya fo ka se 30% ma .
Aw bɛ a hakɛw ɲɛ ka ɲɛ ni 15-20% ye .
Aw bɛ mɔli ɲɛnamaya janya ni 10-15% ye .
Fɛn suguya caman bɛ minɛni degunw de wajibiya. Nin ye tabali ye min bɛ bonya ka da izini sariyaw kan:
| Fɛn minnu | bɛ ladilikan di ka degunw minɛ | kɛrɛnkɛrɛnnenya la . |
| PA (Nylon) . | 50% bɛ kɛ pikirijikɛlan na . | Ji-sɔgɔli, a bɛ se ka kɛ ko a ka kan ka ja sani a ka ja . |
| POM (acetal) . | 80-100% pikiri tansiyɔn na . | Degunba min ka bon walasa ka dimension sabatili ɲɛnabɔ . |
| PP/PE . | 30-50% bɛ kɛ pikirijikɛlan na . | Degun dɔgɔyali ka da a kan a bɛ dɔgɔya hakɛ caman na . |
| ABS . | 40-60% bɛ kɛ pikirijikɛlan na . | Balanced ka ɲɛsin surface fini ɲuman ma . |
| PC . | 60-80% bɛ kɛ pikirijikɛlan na . | Degunba min ka bon walasa ka sinkɔrɔkɛrɛdimi bali . |
Material properties (Matériel propriétés) bɛ nɔba bila minɛcogo ɲuman na. Nilon, ka kɛ jilafɛn ye, a ka ca a la, a bɛ degunw de wajibiya sani a ka ja ani ka a damatɛmɛ. Acetal benefits ka bɔ degunba la walasa ka muɲuli gɛlɛnw sɔrɔ. Poliyolefiniw i n’a fɔ PP ani PE, olu mago bɛ degunw na minnu ka dɔgɔn ka da u dɔgɔyali hakɛ kan. ABS bɛ balansi sɔrɔ, ka sɔrɔ polikarbonati bɛ degun caman de wajibiya walasa ka dugukolo sanfɛla jogo mara. Fɛn minnu bɛ bɔ kɛnɛ kan, olu bɛ ka laadala minɛ degunw dancɛw gɛlɛya, ka ɲininiw ni yiriwaliw wajibiya minnu bɛ senna taabolo ɲuman na.
Fɛn minnu bɛ kɛ ka degun minɛ .
Minɛni degun ɲuman sigili nafa ka bon kosɛbɛ walasa ka pikirijikɛlanw dilan minnu ka ɲi kosɛbɛ. Aw bɛ nin fɛɛrɛ ninnu tigɛ walasa ka aw ka baara kɛcogo ɲɛ:
Aw bɛ tansiyɔn fitinin jateminɛ .
Aw bɛ a daminɛ ni minɛ tansiyɔn dɔgɔman ye, ka dɔ fara a kan dɔɔni dɔɔni .
Monitor part quality, ka underfilling taamasiɲɛw ɲini .
Degun fitinin bɛ sɔrɔ ni a yɔrɔw bɛ fa tuma bɛɛ .
O sen in bɛ marifa surunw bali ani ka yɔrɔ dafalen sɔrɔli sabati .
Aw bɛ tansiyɔnba sɔrɔ .
Aw bɛ minɛ degun kɔrɔta dɔɔnindɔɔnin ka tɛmɛ a dɔgɔyalenba kan .
Aw ye yɔrɔ dɔw dakunw ni farankanw kɔlɔsi flash formation kama .
tansiyɔnba bɛ duguma dɔrɔn yɔrɔ min na flashing bɛ kɛ .
Nin sen in bɛ i ka tansiyɔn sanfɛla dan jira .
Set Holding pressure (Dɔgɔya minɛcogo) o nafaw ni ɲɔgɔn cɛ .
Aw bɛ cɛmancɛ jateminɛ kɛ degun fitininw ni degunw cɛ .
Aw bɛ baara kɛ n’o ye i n’a fɔ aw ka minɛcogo fɔlɔ degun sigicogo .
Fine-tune min sinsinnen bɛ a yɔrɔ ɲuman ni a fɛn kɛrɛnkɛrɛnnenw cogoya kan .
Aw bɛ ladilan nin yɔrɔ in kɔnɔ walasa ka yɔrɔ hakɛw ni surface fini ɲɛnabɔ .
Material properties bɛ nɔba bila sigida ɲumanw na. Misali la, a ka c’a la, polimɛri minnu bɛ kɛ ni kirisitalini ye, olu bɛ minɛ degunw ka bon ka tɛmɛ fɛn gansanw kan.
| Matériel suguya | typique Holding Pressure Range . |
| Semi-crystalline . | 60-80% bɛ kɛ pikirijikɛlan na . |
| Amorphe . | 40-60% bɛ kɛ pikirijikɛlan na . |
Pro tip: Aw bɛ tansiyɔn jateminɛnanw kɛ aw ka nɔgɔbɔlan kɔnɔ walasa ka kɔlɔsili kɛ waati yɛrɛ la. U bɛ kunnafoni nafamaw di degun kunbɛnni tigitigi kan pikiri ni minɛni waatiw bɛɛ la.
Pikiri caman kɛli ni a minɛcogo .
Multitage processes bɛ kunnafoni ɲumanw di. Sɛgɛsɛgɛli minnu kɛra Journal of Applied Polymer Science fɛ, olu b’a jira ko fɛn caman minɛni bɛ se ka kɛ:
Aw bɛ WarPage dɔgɔya fo ka se 30% ma .
Aw bɛ kɔnɔna degunw dɔgɔya ni 15-20% ye .
fanga dɔgɔyali ni 5-8% ye .
Nin ye fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ
| fɛn | ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye | min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ | fɛn ye |
| 1 | 80-100% . | 40-50% . | A daminɛ na pakew . |
| 2 | 60-80% . | 30-40% . | nɛnɛba min bɛ kɛ ni kɔrɔsili ye . |
| 3 | 40-60% . | 20-30% . | A laban na, a bɛ se ka kɛ ko a bɛ se ka kɛ . |
Nin fɛɛrɛ caman kɛcogo in bɛ sira Di kɔlɔsili tigitigi ma minɛni waati bɛɛ la. A daminɛ na, tansiyɔnba taamasiɲɛ bɛ a to a ka kɛ fɛn ye min bɛ se ka kɛ ka fɛnw pake ka ɲɛ, o bɛ dɔ bɔ jisigiyɔrɔw ni yɔrɔ lankolonw farati la. Cɛmancɛ-yɔrɔ bɛ nɛnɛko taabolo ɲɛnabɔ, ka kɔnɔna degunw dɔgɔya. Stage laban bɛ dimensions fine-tues i n’a fɔ a yɔrɔ bɛ sabati cogo min na. Sisan, fɛn minnu bɛ kɛ ka fɛnw labɛn, olu bɛ degunw jira minnu bɛ se ka kɛ, ka u ladilan waati yɛrɛ la ka da sensɛriw ka jaabiw kan, ka taa ɲɛ ka taa a fɛ, ka ɲɛsin jateminɛ ni fɛnw ma minnu ka gɛlɛn.
Minɛni waati .
Min bɛ waati minɛ Injection Molding kɔnɔ .
Minɛni waati ye minɛ degun bɛ Kɛ waati min na. A bɛ da Minɛ kɔ̀gɔyalen falen kɔ fɛ ka Taa a fɛ fo da (dadonda da la) ka nɛnɛ.
Fɛn minnu bɛ se ka kɛ waati minɛni na, olu ye:
1.A bɛ sira di fɛn wɛrɛw ma u ka se ka don foroko kɔnɔ walasa u ka se ka dɔgɔya .
2.A ka c’a la a bɛ daminɛ segin 3 la ka se segin 10 ma a fanba la .
3.A bɛ ɲɔgɔn falen-falen ka da a yɔrɔ janya kan, a fɛnw cogoyaw kan, ani a mɔli funteni kan Minɛni waati ɲuman bɛ a to da ka sumaya pewu, ka fɛnw kɔtigɛ bali ka sɔrɔ ka i yɛrɛ tanga kɔnɔna degun kojugu walima da bɔli ma.
Minɛni waati nɔ min bɛ sɔrɔ yɔrɔw la minnu dilannen don .
Minɛni waati dafabaliya nɔfɛkow .
Minɛni waati dafabaliya bɛ se ka kɛ sababu ye ka:
fo ka se 5% ma a yɔrɔ girinya la .
10-15% farala kɔnɔnatumuw sɔrɔli kan .
7-10% dɔgɔyali hakɛ tiɲɛni na .
Minɛni waati tɛmɛnen nɔfɛkow .
Hali n’a bɛ se ka kɛ ko janya ka fisa, minɛni waati jan bɛ a dɛsɛw la:
3-5% bɛ caya cycle waati la sekɔndi kɔnɔ ka tɛmɛ minɛcogo kan .
fo ka se 8% ma fanga sɔrɔli la .
2-3% bɛ caya degun tolenw hakɛ la .
Classic steps for setting temps .
Aw bɛ a funteni hakɛ sigi .
Aw ye aw ka fɛnw kunnafonisɛbɛn lajɛ walasa ka funteni hakɛ fɔlenw sɔrɔ .
Nafa cɛmancɛ sugandi i n’a fɔ i ka daminɛyɔrɔ .
O bɛ kɛ sababu ye ka fɛnw sɛgɛsɛgɛli kɛ ka ɲɛ ka ɲɛsin fɛn dilanni taabolo ma .
Paramɛtiriw kilisi ladilan .
Fali teliya ka ɲɛ walasa ka se ka falan fali dafalen sɔrɔ .
Set transition point, a ka c'a la 95-98% cavity fill .
Aw bɛ nɛnɛ waati bɛnnenw jateminɛ ka da a yɔrɔ janya kan .
Set minɛ degun .
Kɔrɔbɔli waati suguya caman kɔrɔbɔ .
Aw bɛ a daminɛ ni minɛ waati surun ye, ka dɔ fara a kan dɔɔni dɔɔni .
A bɛ yɔrɔ 5-10 dilan waati kelen-kelen bɛɛ la .
Aw bɛ a yɔrɔ kelen-kelen bɛɛ jateminɛ ni sɛgɛsɛgɛli ye min bɛ kɛ ka ɲɛ (±0.01g tiɲɛni) .
Aw ye girinya ni waati jateminɛ .
Aw bɛ girinya sabatili yɔrɔ dɔn .
Minɛni waati laban .
Aw bɛ segin 0,5-2 fara a sabatili yɔrɔ kan .
Nin waati wɛrɛ in bɛ daamu dafalen sabati .
Aw bɛ ladilan ka da a yɔrɔ dɔw ka gɛlɛya kan ani fɛnw cogoyaw kan .
Pro tip: Walasa ka yɔrɔ gɛlɛnw sɔrɔ, aw bɛ a lajɛ ka baara kɛ ni kɔnɔna tansiyɔn jateminɛnanw ye. U bɛ hakilina tilennenw Di gate freeze kan, o bɛ sira Di ka waati ɲɛnabɔli tigitigi Kɛ.
Kuncɛli: Mastering minɛni degun ni waati pikiri kɛli la .
Minɛni degun ni waati ɲɛnabɔli bɛ jɔ i n’a fɔ fɛn min bɛ kɛ ka pikiri kɛ ni pikirijikɛlanw ye minnu ka ɲi kosɛbɛ. Nin paramɛtɛrɛw, minnu ka teli ka ye ka ban, olu jɔyɔrɔ ka bon kosɛbɛ fɛn laban hakɛ dantigɛli la, a sanfɛla laban, ani a dafalen bɛɛ lajɛlen na.I n’a fɔ pikiri kɛcogo fɛɛrɛ bɛ ka taa ɲɛ, a nafa ka bon ka degun ni waati minɛ ka ɲɛ, o bɛ to ka kɛ cogo kelen na. Ni u ye o paramɛtiriw dɔn, fɛn dilannikɛlaw bɛ se ka balansi nɔgɔlen sɔrɔ yɔrɔ jogo, fɛn dilanni nafama, ani musaka dɔgɔyali cɛ.
Aw ye aw hakili to a la, hali ni laadilikanw bɛɛ bɛ daminɛ yɔrɔ di, fɛn dilanni kɛcogo kelen-kelen bɛɛ ye fɛn ye min ɲɔgɔn tɛ. Kɔlɔsili, sɛgɛsɛgɛli ani ladilanni bɛ to sen na, o ye fɛnba ye walasa ka baara kɛcogo ɲuman mara pikiri kɛcogo diɲɛ fangama kɔnɔ.
Aw b’a fɛ ka aw ka plastiki dilanni kɛcogo ɲuman sɔrɔ wa? Team MFG ye i ka taa-ka-segin jɛɲɔgɔn ye. An bɛ kɛrɛnkɛrɛnnenya la gɛlɛya caman kunbɛn i n’a fɔ ejector pin marks, ka fɛɛrɛ kuraw di minnu bɛ ɲɛnajɛko ni baarakɛcogo bɛɛ bonya. An ka dɔnnikɛlaw ka jɛkulu ye fɛn ye min bɛ se ka di fɛnw ma minnu bɛ tɛmɛ i ka jigiya kan. Aw ye anw sɔrɔ rightnow.
Ɲininkaliw jaabiw degun ni waati minɛni kan .
1. Mun bɛ degun minɛ pikiri kɛli la?
Minɛni degun ye fanga ye min bɛ kɛ nɔgɔbɔlan falen kɔfɛ. A bɛ yɔrɔ cogoya mara nɛnɛ waati, ka fiɲɛw bali i n’a fɔ jisigiyɔrɔw ani yɔrɔ lankolonw.
2. Minɛni waati bɛ danfara cogo di ni nɛnɛ waati ye?
Minɛni waati ye waati kuntaala ye degun bɛ kɛ fali kɔfɛ. Nɛnɛ waati ye waati bɛɛ lajɛlen ye a yɔrɔ bɛ to foroko kɔnɔ walasa ka a jɔ. A ka c’a la, minɛni waati ka surun wa a bɛ kɛ nɛnɛ waati kɔnɔ.
3. Yala ka dɔ fara minɛ degun kan, o bɛ se ka yɔrɔ cogoya ɲɛ tuma bɛɛ wa?
Ayi, hali ni degun bɛrɛ bɛnnen don, degunba bɛ se ka kɛ sababu ye ka ko dɔw kɛ i n’a fɔ Warpage, Flash, ani kɔnɔna degun ka caya. Tansiyɔn ɲuman bɛ danfara ka kɛɲɛ ni fɛnw ye ani a yɔrɔ dilanni.
4. Ne bɛ se ka minɛ waati bɛnnen dɔn cogo di?
Aw bɛ sɛgɛsɛgɛliw kɛ minnu sinsinnen bɛ girinya kan:
Nɔgɔ yɔrɔw ni minɛ waatiw bɛ ka caya .
A yɔrɔ kelen-kelen bɛɛ bɛ girinya .
plot weight vs. minɛ waati .
girinya bɛ sabati yɔrɔ min na .
Waati sigilen ka tɛmɛ nin yɔrɔ in kan dɔɔnin .
5. Jɛɲɔgɔnya jumɛn bɛ yɔrɔ janya ni degun/waati cɛ?
A yɔrɔ minnu ka bon, olu bɛ caman de wajibiya:
A ka ca a la, yɔrɔ minnu kogow ka fin, olu mago bɛ degunba la ani waati kunkurunninw na.
6. Fɛnw sugandili bɛ nɔ bila cogo di minɛ degun sigicogo la?
Fɛn suguya caman bɛ se ka dɔgɔya hakɛ ni u sɔgɔli hakɛ caman na. I n'a fo:
Nilon: ~50% pikiri tansiyɔn na .
Acetal: 80-100% pikirijikɛlan .
PP/PE: 30-50% pikiri tansiyɔn na .
Aw bɛ to ka kunnafoni sɛbɛnw lajɛ walasa ka bilasirali sɔrɔ.
7. Minɛni walima waati dafalen taamasiɲɛ jumɛnw bɛ yen?
Ɲɛjirali minnu bɛ kɛ tuma caman na, olu ye:
