Kuyeretsa njira za pulasitiki extruder

Choyamba, sankhani chipangizo chotenthetsera choyenera

Kuchotsa pulasitiki yokhazikika pa wononga ndi moto kapena kuwotcha ndiyo njira yodziwika bwino komanso yothandiza pamagawo opangira mapulasitiki, koma lawi la acetylene siliyenera kugwiritsidwa ntchito kuyeretsa screw.

Njira yolondola komanso yothandiza: gwiritsani ntchito blowtorch mukangomaliza kuyeretsa. Chifukwa screw ili ndi kutentha panthawi yokonza, kugawa kwa kutentha kwa screw kumakhala kofanana.

Chachiwiri, sankhani njira yoyenera yoyeretsera

Pali mitundu yambiri ya zotsukira zotsukira (zida zotsukira) pamsika, zomwe zambiri zimakhala zodula komanso zimakhala ndi zotsatira zosiyanasiyana. Makampani opanga pulasitiki amatha kugwiritsa ntchito utomoni wosiyanasiyana kupanga zinthu zoyeretsera zomangira malinga ndi momwe amapangira.

Chachitatu, sankhani njira yoyenera yoyeretsera

Gawo loyamba pakuyeretsa wononga ndikuzimitsa choyikapo chakudya, ndiye kuti, kutseka doko lodyera pansi pa hopper; Kenako chepetsani liwiro la screw mpaka 15-25r / min ndikusunga liwiro ili mpaka kusungunuka kumayenda kutsogolo kwa kufa kumasiya kuyenda. Kutentha kwa magawo onse otentha a mbiya kuyenera kukhazikitsidwa pa 200 ° C. Mgolo ukangofika kutentha uku, kuyeretsa kumayamba.

Kutengera ndi njira ya extrusion (fa lingafunike kuchotsedwa kuti muchepetse chiwopsezo chambiri kutsogolo kwa extruder), kuyeretsa kuyenera kuchitidwa ndi munthu m'modzi: woyendetsa amawona liwiro la wononga ndi torque kuchokera pagulu lowongolera, poyang'ana kuthamanga kwa extrusion kuti muwonetsetse kuti kuthamanga kwa dongosolo sikuli kokwera kwambiri. Panthawi yonseyi, liwiro la screw liyenera kusungidwa mkati mwa 20r / min. Mu ntchito ndi otsika kuthamanga kufa, musachotse kufa kwa kuyeretsa mu malo oyamba. Pamene extrusion yatembenuzidwa kwathunthu kuchokera ku processing resin kupita ku utomoni woyeretsera, imfa imayimitsidwa ndikuchotsedwa, ndiyeno wonongayo imayambiranso (mkati mwa 10r / min) kuti utomoni wotsalira woyeretsera utuluke.

Chachinayi, sankhani zida zoyenera zoyeretsera

Zida zoyenera ndi zipangizo zoyeretsera ziyenera kuphatikizapo: magolovesi osagwirizana ndi kutentha, magalasi, scrapers zamkuwa, maburashi amkuwa, waya wamkuwa, stearic acid, kubowola magetsi, olamulira migolo, nsalu za thonje.

Utoto wotsuka ukasiya kutulutsa, screw imatha kuchotsedwa pa chipangizocho. Kwa zomangira zokhala ndi makina oziziritsa, chotsani chingwe cha payipi ndi kulumikizana kozungulira musanayambe chipangizo chochotsa wononga, chomwe chingamangiridwe ku gearbox. Gwiritsani ntchito wononga wononga chipangizo kukankhira wononga patsogolo, poyera malo 4-5 zomangira poyeretsa.

Utomoni woyeretsera pa screw ukhoza kutsukidwa ndi chopukutira chamkuwa ndi burashi yamkuwa. Pambuyo potsukidwa utomoni wotsuka pa wononga wowonekera, chipangizocho chidzakankhidwira kutsogolo 4-5 zomangira pogwiritsa ntchito chipangizo chochotsa wononga ndikupitiliza kuyeretsa. Izi zinabwerezedwa ndipo pamapeto pake zambiri zowononga zinakankhidwira kunja kwa mbiya.

Utoto woyeretsera ukachotsedwa, perekani asidi wa stearic pa screw; Kenako gwiritsani ntchito mawaya amkuwa kuti muchotse zotsalazo, ndipo wononga zonse zikapukutidwa ndi mawaya amkuwa, gwiritsani ntchito nsalu ya thonje popukuta komaliza. Ngati misala ikufunika kupulumutsidwa, mafuta osanjikiza ayenera kuyikidwa pamwamba kuti asachite dzimbiri.

Kuyeretsa mbiya ndikosavuta kuposa kuyeretsa screw, komanso ndikofunikira kwambiri.

1. Pokonzekera kuyeretsa mbiya, kutentha kwa mbiya kumayikidwanso pa 200 ° C;

2. Pewani burashi yachitsulo yozungulira ku chitoliro chobowola ndi kubowola magetsi kukhala zida zoyeretsera, ndiyeno kukulunga burashi yachitsulo ndi mawaya amkuwa;

3. Musanalowetse chida choyeretsera mu mbiya, perekani asidi wa stearic mu mbiya, kapena kuwaza asidi wa stearic pazitsulo zamkuwa za chida choyeretsera;

4. Pambuyo pa waya wamkuwa wa mkuwa umalowa mu mbiya, yambani kubowola kwa magetsi kuti mutembenuzire, ndikupangitsa kuti iziyenda mmbuyo ndi mtsogolo mpaka kusuntha uku ndi kumbuyo sikukhala kukana;

5. Pambuyo pochotsa waya wa mkuwa mu mbiya, gwiritsani ntchito nsalu za thonje kuti mupukute mmbuyo ndi mtsogolo mu mbiya kuti muchotse utomoni woyeretsa kapena zotsalira za asidi; Pambuyo popukuta kangapo mmbuyo ndi kutsogolo, kuyeretsa mbiyayo kumatsirizika. Zomangira zotsukidwa bwino ndi mbiya zakonzeka kupanganso!