Zvinhu zvakawanda zvinokanganisa kugadzirwa kwejekiseni mold.

Paunenge uchigadzira jekiseni molds, kazhinji pane zvakawanda zvinhu zvinokanganisa kunaka kwechigadzirwa.

Kupedzisa, pane zvinonyanya zvibodzwa zvina:

1. Mold tembiricha

Kudzika kwekushisa kwe mold, kukurumidza kupisa kunorasika nekuda kwekupisa kwekushisa, kuderera kwekushisa kwekunyunguduka, uye kuwedzera kwemvura.Ichi chiitiko chinonyanya kuoneka kana majekiseni mashoma anoshandiswa.

2. Plastiki zvinhu

Kuoma kwezvinhu zvepurasitiki zvinhu zvinotarisa kuoma kwekuita jekiseni molding process.Kuita kwezvinhu zvepurasitiki kunosiyana zvakanyanya nekuda kwemhando dzakasiyana, mhando dzakasiyana, vagadziri vakasiyana, uye kunyange mabheti akasiyana.Yakasiyana maparamita ekuita anogona kutungamira kune akasiyana zvachose ekuumba mhedzisiro.

3. Jekiseni tembiricha

Iyo inonyunguduka inoyerera ichipinda muvhu rakatonhodzwa mold uye inorasikirwa nekupisa nekuda kwekupisa kwekupisa.Panguva imwecheteyo, kupisa kunogadzirwa nekuda kwekuveura.Kupisa uku kunogona kuva kwakawanda kana kushoma pane kupisa kwakarasika ne thermal conduction, zvakanyanya zvichienderana nemamiriro ekuumba jekiseni.Iyo viscosity yekunyunguduka inova yakaderera sezvo tembiricha inowedzera.Nenzira iyi, iyo yakakwira tembiricha yejekiseni, inodzika iyo viscosity yekunyungudika, uye idiki iyo inodiwa yekuzadza kumanikidza.Panguva imwecheteyo, tembiricha yejekiseni zvakare inoganhurwa nekushisa kwekupisa tembiricha uye tembiricha yekuora.

4. Nguva yejekiseni

Kubata kwenguva yejekiseni pane jekiseni molding process inoratidzwa muzvikamu zvitatu:

(1) Kana nguva yejekiseni ikapfupikiswa, iyo shear strain rate mukunyunguduka ichawedzerawo, uye jekiseni rinodiwa kuzadza gomba richawedzerawo.

(2) Pfupisa nguva yejekiseni uye wedzera shear strain rate mukunyungudika.Nekuda kweiyo shear kuonda maitiro epurasitiki kunyunguduka, viscosity yekunyunguduka inodzikira, uye jekiseni rinodiwa kuti rizadze mhango rinofanirawo kudzikira.

(3) Kupfupisa nguva yejekiseni, iyo shear strain rate mukunyunguduka inowedzera, iyo yakakura kupisa kweshear, uye panguva imwechete kupisa kushoma kunorasika nekuda kwekupisa conduction.Nokudaro, kutonhora kwekunyunguduka kwakakwirira uye viscosity yakaderera.Jekiseni rinodiwa kuzadza mhango is Stress inofanirawo kuderedzwa.Iko kusanganiswa kwemamiriro matatu ari pamusoro anoita kuti curve yejekiseni yekumanikidza inodiwa kuzadza mhango ioneke "U" yakaumbwa.Ndiko kuti, pane nguva yejekiseni apo inodiwa jekiseni pressure ishoma.