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Ongororo yeKutonhodza Nguva yeJekiseni Molding

Kubvumbi 14, 2021

Mukugadzirwa kwejekiseni, plastiki jekiseni kuumba zvikamu zvekutonhodza nguva yese yekugadzira jekiseni kutenderera kweinenge 80%. Kusatonhodza zvakanaka kunowanzokonzera warpage yechigadzirwa kana kuremara kwepamusoro, kukanganisa dimensional kugadzikana kwechigadzirwa. Kurongeka kunonzwisisika kwejekiseni, kurongedza uye kutonhora nguva, inogona kuvandudza kunaka kwechigadzirwa uye kubudirira.

Chikamu che nguva yekutonhora, kazhinji inoreva kunyungudika kwepurasitiki kubva kuforoma izere ne mold cavity inogona kuvhurwa kuti itore chikamu chenguva.. Inogona kuvhura mold kunze kweiyo nguva standard, kazhinji neworkpiece yakaporeswa zvizere, nerimwe simba uye kuomarara zvinokunda, mu mold kubva pamusoro deformation haizotsemuka. Kunyangwe nekuumbwa kwepurasitiki yakafanana, kutonhora kwayo nguva inosiyana nekukora kwemadziro, tembiricha yepurasitiki yakanyungudutswa, mold kuburitsa tembiricha uye jekiseni mold tembiricha. Formula yekuverenga nguva yekutonhodza pa 100% hwaro mune zvese hazvisati zvaburitswa, asi chete pahwaro hwefungidziro dzakakodzera. Iyo yekuverenga formula inosiyanawo zvichienderana netsanangudzo yenguva yekutonhodza.

Nekuti iyo IC tray ine huremu huremu, kazhinji nzira nhatu dzinotevera sereferensi yenguva yekutonhodza:

① tembiricha yenzvimbo yakakora yemadziro epurasitiki jekiseni rekuumba madziro, iyo nguva inodiwa kutonhora pasi pekushisa kwekupisa kupisa kwepurasitiki;

(2) avhareji tembiricha muchikamu che epurasitiki jekiseni kuumba chikamu, nguva inodiwa kutonhora kupisa kwe mold yechigadzirwa chakataurwa;

③ tembiricha yenzvimbo yakakora yemadziro epakati ekristaro inoumba madziro epurasitiki, nguva inodiwa kutonhora pazasi pekunyungudika, kana nguva inodiwa kuti usvike iyo yakatarwa muzana yecrystallization.

Mukugadzirisa formula, fungidziro dzinotevera dzinowanzoitwa:

① jekiseni repurasitiki mukati jekiseni mold, uye kupisa kuendeswa kune jekiseni mold uye kutonhodzwa;

② plastiki inoumba mhango uye mold mugodhi padhuze nepedyo neinotonhora shrinkage uye kupatsanura., nyungudusa uye mold madziro pakati pekutamisa kupisa uye kuyerera pasina kupikiswa, nyungudika uye mold madziro kusangana nenguva iyo tembiricha yave yakafanana. Ndizvozvo, apo plastiki inopinda mugomba, iyo workpiece pamusoro tembiricha yakaenzana mold wall tembiricha;

③ epurasitiki jekiseni kuumba zvikamu kutonhora maitiro, the injection mold cavity surface tembiricha inogara yakafanana;

jekiseni mold pamusoro kupisa conduction dhigirii inofanira kuva; (nyungudika yekuzadza maitiro se isothermal process, uye zvinhu tembiricha yunifomu)

⑤ kutaridzika kwepurasitiki uye kushushikana kwekupisa pane deformation yezvikamu zvinogona kuregererwa, saizi yezvidimbu zvekusimbisa tembiricha haikanganisi.

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