Chifukwa chiyani mizere yakuda ikuwonekera mobwerezabwereza mu extruder? Nkhaniyi ikukuphunzitsani momwe mungadziwire mwachangu ngati vuto ndi mbiya kapena screw.

Mizere yakuda pafupipafupi pa zotulutsa zimayamba chifukwa cha kuipitsidwa kwa zinthu zopangira, ma depositi a kaboni pazida, ndi zida zotha. Nkhanizi zimafunika kufufuzidwa ndikuzipeza molingana ndi njira zomwe zili m'munsimu.

1. Zopangira ndi zinthu zothandizira

Ichi ndi chifukwa chofala kwambiri ndipo chiyenera kuyikidwa patsogolo.

Zonyansa zakuthupi: Zinthu zakuda zakunja, monga fumbi, zinyalala zazitsulo, kapena ma masterbatches ena, zitha kulowetsedwa muzopangira, posungira, kapena poyendetsa.

Chinyezi chakuthupi kapena kuwonongeka: Kuchuluka kwa chinyezi muzopangira kungayambitse kutulutsa mpweya panthawi yotentha kwambiri, zomwe zimapangitsa kuti pakhale madontho akuda. Kuwonongeka kwa kusungidwa kwa nthawi yayitali kungapangitsenso kupanga zinthu zakuda zowotchedwa.

Masterbatch kapena zowonjezera nkhani: osauka kubalalitsidwa kwa masterbatch kungachititse wakuda agglomerated particles. Zowonjezera zowonjezera zowonjezera (monga antioxidants) zingayambitse carbonization pa kutentha kwakukulu.

2. Madipoziti a kaboni mkati mwa zida: Pambuyo pakugwiritsa ntchito nthawi yayitali, zotsalira zimatha kukhalabe mumgolo, zomangira, kapena nkhungu, zomwe zimatsogolera ku carbonization ndi kupanga mizere yakuda.

Kuyeretsa kosakwanira panthawi yopuma: Zinthu zotsalira mu mbiya ndi zowononga sizimatsukidwa kwathunthu pambuyo pa kuthamanga koyambirira. Makinawo akayambiranso, zinthu zotsalirazi zimakhala ndi carbonizes pa kutentha kwakukulu ndikusakanikirana ndi zatsopano. Zokonda zokonda kupanga magawo: Kutentha kwa Extrusion ndikokwera kwambiri, kupitilira kutentha kwamphamvu kwazinthu zopangira, kuchititsa kutenthedwa ndi carbonization mu mbiya.

Kuthamanga kwa screw kusagwirizana ndi kuchuluka kwa chakudya: Kuthamanga kwa chakudya kumachedwa kwambiri, pomwe liwiro la screw ndi lothamanga kwambiri, zomwe zimapangitsa kuti zinthuzo zizikhala mumgolo kwa nthawi yayitali, zomwe zimapangitsa kuti matenthedwe awonongeke komanso kutulutsa mpweya.

3. Zida Zida Vala kapena Kulephera

Zinyalala zachitsulo zochokera ku ziwalo zong'ambika kapena zonyansa zomwe zimayambitsidwa ndi zisindikizo zowonongeka zingayambitsenso mizere yakuda.

Screw and Barrel Wear: Pambuyo pakugwiritsa ntchito nthawi yayitali, kusiyana pakati pawononga ndi mbiyakumawonjezera, kupangitsa kuti zinthu zikhale zosavuta kuti zinthu zitsekedwe ndikukhala ndi mpweya mumpata. Ufa wachitsulo wopangidwa ndi kuvala ukhoza kusakanikirana ndi zinthu, kupanga mizere yakuda.

Mavuto a Nkhungu: Madipoziti a kaboni kapena zokopa mumsewu wotuluka mu nkhungu zitha kupangitsa kuti zinthuzo zitsekeredwe ndikupangitsidwa ndi mpweya panthawi yomwe ikuyenda. Zisindikizo za nkhungu zowonongeka zimatha kulola zonyansa zakunja kulowa mumtsinje wotuluka.

Zosefera Zosefera kapena Zowonongeka: Zosefera zosungunula zomwe sizinasinthidwe kwa nthawi yayitali zimatha kutsekeka, zomwe zimapangitsa kuti zinthu zisamayende bwino komanso kutentha kwambiri komanso kutulutsa mpweya. Zosefera zowonongeka zimatha kulola zonyansa kulowa mu nkhungu mwachindunji. Ndikofunikira kuyang'ana mu dongosolo la "zida zopangira → kuyeretsa zida → kuyang'anira zida". Choyamba m'malo gulu la zipangizo zatsopano kuyezetsa. Mukathetsa vuto lazinthu zopangira, gawaniza ndikuyeretsa mbiya, wononga ndi nkhungu, ndipo pomaliza fufuzani momwe zinthu ziliri monga screw ndi fyuluta.

Pamene pulasitiki imasungunuka ikuyendera njira yonse yotumizira, kukanikiza, ndi kusungunuka mkatiscrew, ngakhale kachinthu kakang'ono kwambiri kopanda ungwiro kakhoza kukhala malo oberekerako mizere yakuda. Kukhwinyata kwapamtunda komwe kumachitika mu zomangira wamba kumapangitsa kuti zinthu zikhale zosavuta kuti zitsekedwe mumipata ya ulusi panthawi yozungulira kwambiri. Izi, kuphatikiza ndi kutenthetsa mobwerezabwereza, zimapanga zinthu zoyaka moto, zomwe zimapangitsa kuti pakhale mikwingwirima yakuda muzomaliza.

Kusankha zinthu n’kofunikanso kwambiri. Zomangira zathu zimapangidwa ndi chitsulo chamtengo wapatali cha 38CrMoALA nitrided alloy. Izi zimakhala ndi chithandizo cha masiku asanu ndi awiri chozimitsidwa ndi nitriding, zomwe zimapangitsa kuti 0.50-0.70mm wandiweyani wa nitrided wosanjikiza komanso kuuma kwa HV950-1050. Zinthu zakuthupi izi zimatsimikizira kukana kovala bwino ngakhale kutentha kozungulira 200 ° C, kukulitsa moyo wautumiki wa screw ndi gawo limodzi mwachisanu poyerekeza ndi zinthu wamba. Izi zimalepheretsa kuchulukana kwazinthu m'makona akukufa chifukwa chovala pamwamba pakugwiritsa ntchito nthawi yayitali.

Kupyolera mu makina olondola, wonongayo imakwaniritsa kutsirizira kwa galasi la Ra0.4 microns, kuwirikiza kangapo kuposa muyezo wamakampani. Izi zimatanthawuza kusiyana kwa kutalika kosaposa ma microns 0.4 pa millimeter imodzi ya utali wa wononga, 1/200th m'mimba mwake mwa tsitsi la munthu. Chowoneka bwino kwambiri choterechi chimachepetsa kwambiri chiwopsezo chosunga zinthu ndikuchotsa njira ya mikwingwirima yakuda poyambirira.