Popanga zinthu, madontho azinthu ndi pores ndizomwe zimachitika pafupipafupi. Pulasitiki yolowetsedwa mu nkhungu imachepa mphamvu ikazizira. Pamwamba pamakhala kuuma koyambirira kukazizira koyambirira, ndipo ming'oma imapanga mkati.
The indentation ndi pang'onopang'ono kuzirala mbali ya kuwira mu malangizo a chidule cha pamwamba concave; Zomwe zimatchedwa stoma zimatanthawuza zinthu zomwe zili mu nkhungu zimalimba kuchokera pamwamba, zomwe zimakhala zosakwanira pa chiwerengero chonse cha nkhungu. Pachifukwa ichi, mabowo m'malo opanda vacuum amapangidwa, omwe nthawi zambiri amapezeka m'malo okhuthala azinthu komanso doko lodzaza.
Zipangizo zomwe zimakhala ndi shrinkage kwambiri zimakhalanso zosavuta kulowetsa. Posintha mawonekedwe opangira kuti athetse indentation, chikhalidwe chokhazikika chiyenera kukhazikitsidwa kumbali ya shrinkage. Ndiko kuti, kutentha kwa nkhungu ndi kuchepa kwa kutentha kwa mbiya, kuthamanga kwa jekeseni kumawonjezeka, koma ziyenera kukumbukiridwa kuti izi zingayambitse kupsinjika kotsalira mkati.
Chifukwa indentation ndi inconspicuous, kotero izo sizimakhudza maonekedwe a ndondomeko nkhungu mu dzimbiri, monga striated, granular ndi zina zotero.
Kuchepetsa kutentha kwa kufa kuti muchepetse kutha kumagwiranso ntchito ngati zinthu zomangira zimakhala zosagwirizana ndi polystyrene HIPS (mtundu wa polystyrene PS). Koma zikamera m’njira zimenezi, zimakhala zovuta kukonza zopukutidwazo.
Zogulitsa zowonekera zokhala ndi mabowo a mpweya ndizovuta, zinthu zosawoneka bwino zokhala ndi mabowo a mpweya sizikhala ndi zopinga zogwiritsa ntchito ndipo siziyenera kuwonedwa muzogulitsa.
Chifukwa cha madzi ndi kugwedezeka komwe kumapangidwa ndi stomata, nthawi zambiri amagawidwa kumadera onse a mankhwala, mawonekedwe a stomata nthawi zambiri amakhala ochepa.
Choyamba, yankho
Instant: onjezani kuthamanga kwa jekeseni, onjezerani kupanikizika kwa jekeseni, kuchepetsa kutentha kwa mbiya ndi kutentha kwa nkhungu, chinyezi ndi zosasunthika zomwe zimayambitsidwa ndi zinthuzo ziyenera kukhala zowuma bwino, m'malo mwa indentation mokakamizidwa kuzirala.
Kanthawi kochepa: Lembani m'mphepete kumtunda komwe kumapangidwira. Kumene amabowola, zinthuzo zimakhuthala pamene zikudutsa m’malo opapatiza.
Nthawi yayitali: kusiyana kwa makulidwe azinthu zamapangidwe kuyenera kupewedwa kwathunthu. Zosavuta kupanga zolimbitsa ma dent, mawonekedwe aatali komanso opapatiza ayenera kukhala aafupi momwe angathere. Ayenera kuwonjezera chipata, njira yayikulu, shunt, bowo la nozzle. Kutulutsa kokwanira.
Chachiwiri, nkhani zolozera
1 akamaumba shrinkage ya indentation yaikulu zinthu ndi yaikulu, monga polyethylene PE, polypropylene PP, ngakhale kulimbitsa pang'ono, adzatulutsa indentation.
| Zakuthupi | Kuchepa kwa nkhungu |
| PS | 0.002 ~ 0.006 |
| PP | 0.01 ~ 0.02 |
| PE | 0.02 ~ 0.05 |
2. Pamene kutentha kumachepetsedwa kuti zisawonongeke, ngati zinthu zomwe zili mu nkhungu zidakali zopanikizika, ziyenera kuganiziridwa kuti palibe mano omwe angapangidwe. Kupanikizika kwa zinthu zozungulira nkhungu mu nkhungu, ndiko kuti, kuthamanga kwa static, sikuli kwenikweni kulikonse.
Pafupi ndi chipata mbali ya kuthamanga ndi mkulu, ngati zinthu m'mphepete lonse, chifukwa cha kutengerapo kukakamiza kumakona onse, pafupi ndi chipata ndi kutali ndi chipata cha kuthamanga kusiyana ndi kuthamanga lonse poyerekeza ndi kusiyana pang'ono sadzatero. kutulutsa mano, komanso sangapeze mankhwala otsalira amkati opsinjika.
Pamene zinthu zina zimalowa m'malo ovuta, pali kupanikizika kwakukulu kumalo ano, ndipo kupanikizika kumachepa m'malo ena, zomwe zimapangitsa kuti zikhale zovuta. Gawo ili la zotsalira zapakatikati ndi kupsinjika kwamkati kwa mankhwalawa kulinso kwakukulu. M'malo abwino, madzi amadzimadzi amakhala bwino pamene kutentha kwa zinthu kumakwera ndi kutentha kwa imfa, ndipo jekeseni mu static pressure state imakhalanso yotsika.
3. Mu kusintha kwa kupanga zinthu, kuphatikiza kutentha, kupanikizika ndi nthawi ziyenera kupangidwa patsogolo pa tebulo, kuti mudziwe zotsatira zake. Choyamba, pamene nthawi ikhala yaitali kwambiri, n'zosavuta kudziwa kusintha kwakung'ono kulikonse kwa kukakamizidwa. Tiyenera kukumbukira kuti zotsatira zomwe zimapezeka pamene kutentha kumasintha kuyenera kupangidwa pambuyo pa jekeseni komanso kutentha kumatsika.
4. Kuti mudziwe zifukwa zomwe zimayambitsidwa ndi pores, malinga ngati kuyang'ana kwa kuwira kwa zinthu zapulasitiki mu nkhungu kumakhala nthawi yomweyo kapena pambuyo pozizira, ngati nkhungu ikakhala nthawi yomweyo, ambiri a iwo ndi vuto lakuthupi, ngati litatha kuzirala. , ndi ya nkhungu kapena jekeseni.
Nthawi yotumiza: 03-11-22