Sei mitsetse mitema ichionekwa kakawanda muextruder? Ichi chinyorwa chinokudzidzisa nzira yekukurumidza kuona kuti inokonzerwa nedambudziko nebhari kana screw.

Kazhinji mitsara mitema pane extruder inonyanya kukonzerwa nekusvibiswa kwezvinhu, kabhoni deposits pamidziyo, uye zvinhu zvakasakara. Nyaya idzi dzinoda kuferefetwa nekutsvagirwa zvinoenderana nematanho ari pasi apa.

1. Raw zvinhu uye ebetsero zvinhu zvinhu

Ichi ndicho chikonzero chinowanzoitika uye chinofanira kukosheswa.

Kusachena kwezvinhu zvakasvibirira: Zvinhu zvitema zvekune dzimwe nyika, senge huruva, marara esimbi, kana mamwe masterbatches, anogona kuunzwa muzvigadzirwa panguva yekugadzira, kuchengetedza, kana kufambisa.

Kunyorova kwezvinhu zvakasvibirira kana kushatisa: Kuwedzeredza hunyoro mune zvigadzirwa zvinogona kutungamira kune carbonization panguva yekupisa-yekushisa extrusion, zvichikonzera matema matema. Kusvibiswa kubva pakuchengetwa kwenguva refu kunogonawo kukonzera kuumbwa kwezvinhu zvitema zvakatsva.

Masterbatch kana nyaya dzekuwedzera: Kusaparadzika kweiyo masterbatch kunogona kukonzera dema agglomerated particles. Kuwedzera kuwedzera kwezvinowedzera (zvakadai se antioxidants) zvinogona kutungamirira ku carbonization pakupisa kwakanyanya.

2. Carbon deposits mukati memidziyo: Mushure mekushandisa kwenguva refu, zvinhu zvakasara zvinogona kuramba zviri nyore mudhiramu, screw, kana mold, zvichiita kuti carbonization uye kuumbwa kwemitsara mitema.

Kucheneswa kusina kukwana panguva yekudzikira: Zvinhu zvakasara mudhiramu uye screw hazvina kucheneswa zvachose mushure mekumhanya kwapfuura. Kana muchina watangwa patsva, iyi yasara zvinhu zvinopisa patembiricha yakakwira uye inosanganiswa nezvinhu zvitsva. Zvisizvo zvigadziriso zveparameta yekugadzira: Extrusion tembiricha yakakwira zvakanyanya, ichipfuura tembiricha yekudzikama kweiyo mbishi, zvichikonzera kupisa uye carbonization mudhiramu.

Screw kumhanya kusawirirana nehuwandu hwekudya: Kumhanyisa kwekudya kunononoka, nepo screw speed inokurumidza, zvichiita kuti zvinhu zvirambe zviri mudhiramu kwenguva yakareba, zvichitungamira mukupisa kwekupisa uye carbonization.

3. Equipment Parts Kupfeka kana Kukundikana

Metal tsvina kubva kune dzakasakara kana tsvina dzinounzwa neakakuvadzwa zvisimbiso zvinogona kukonzerawo mitsetse mitema.

Screw uye Barrel Wear: Mushure mekushandisa kwenguva refu, gaka riri pakati pescrew uye mbiyainowedzera, zvichiita kuti zvive nyore kuti zvinhu zvivharwe uye carbonized mugomba. Metal poda inogadzirwa nekupfeka inogona kusanganiswa mune izvo zvinhu, kugadzira mitsara mitema.

Matambudziko Mold: Carbon deposits kana zvikwambo mu mold flow chiteshi zvinogona kuita kuti zvinhu zvivharirwe uye zvigadzirwe kabhoni panguva yekuyerera. Yakakuvadzwa mold seals inogona kubvumira kunze kusvibiswa kupinda mugero rekuyerera.

Sefa Chivharo kana Kukuvadzwa: Melt mafirita asina kutsiviwa kwenguva yakareba anogona kuvharika, zvichikonzera kushata kwekuyerera kwezvinhu uye kuwandisa kwenzvimbo uye carbonization. Masefa akakuvadzwa anogona kubvumira tsvina kupinda mu mold zvakananga. Zvinokurudzirwa kutarisa mukurongeka kwe "raw materials → kuchenesa michina → kuongororwa kwemidziyo". Kutanga kutsiva bhechi rezvitsva zvitsva zvekuyedza. Mushure mekubvisa dambudziko rezvinhu zvakasvibirira, bvisa uye chenesa dhiramu, screw uye mold, uye pakupedzisira tarisa mamiriro ezvishandiso senge screw uye sefa.

Sezvo plastiki inonyunguduka inopinda maitiro ese ekufambisa, kumanikidza, uye kunyungudika mukatisikuruu, kunyange kusakwana kuduku-duku kwepasi kunogona kuva nzvimbo yokuberekera mitsetse mitema. Iko kushata kwepamusoro kunowanikwa mumasiruuru akajairwa kunoita kuti zvive nyore kuti zvinhu zvivharike mumagapu eshinda panguva yekutenderera kwekumhanya. Izvi, pamwe chete nekudziisa zvakare, zvinogadzira zvigadzirwa zvakatsva, zvinozokonzera mitsetse yakasviba muchigadzirwa chakapedzwa.

Kusarudza zvinhu kwakakoshawo. Masikiru edu akagadzirwa nemhando yepamusoro 38CrMoALA nitrided alloy simbi. Izvi zvinotora mazuva manomwe ekudzima uye kurapwa nitriding, zvichikonzera 0.50-0.70mm gobvu nitrided layer uye kuoma kwepamusoro kweHV950-1050. Izvi zvimiro zvemukati zvinogonesa kusamira zvakanaka kunyangwe tembiricha yakatenderedza 200 ° C, ichiwedzera hupenyu hwesevhisi neinokwana chikamu chimwe muzvishanu zvichienzaniswa neyakajairwa zvigadzirwa. Izvi zvinodzivirira kuvakwa kwezvinhu mumakona akafa nekuda kwekupfeka kwepamusoro pamusoro pekushandiswa kwakawedzerwa.

Kuburikidza nemachini chaiwo, screw inowana girazi-giredhi repamusoro kupera kweRa0.4 microns, kakawanda kukwira kupfuura chiyero cheindasitiri. Izvi zvinoturikira kumutsauko wehurefu usingapfuure 0.4 microns pamillimita yescrew surface urefu, ingori 1/200th dhayamita yebvudzi remunhu. Iyi yepamusoro-yakatsetseka yepamusoro inoderedza zvakanyanya njodzi yekuchengetwa kwezvinhu uye inobvisa nzira yevatema streaks pakutanga.