Posachedwapa, injiniya wina anandifunsa kuti:
Ali ndi zida za POM, ndipo njira yotsimikizira yoyambira idayenda bwino.
Kuyesa kozungulira kawiri kunachitika, kuwonetsa kusintha kwakung'ono komanso mawonekedwe abwino kwambiri, kutsimikizira kuti zinthuzo sizikuwonetsa zovuta zovalira.
Komabe, poyesa posachedwapa-pamakina oyesera moyo wa makinawo atakwanitsa kuzungulira pafupifupi 200,000, zitsanzo zingapo zinayamba kusonyeza kusweka kwa mano pamalo osinthasintha.
Pakali pano pali mkangano wina pakati pa anthu: ena amati ndi chifukwa cha kupsyinjika, ena chifukwa cha zolakwika zamapangidwe, pamene ena amakayikira kusiyana kwa magulu azinthu.
Anafunsa funso labwino kwambiri-
Ngati zinthuzo zinalidi ndi zovuta, ndichifukwa chiyani mayeso am'mbuyomu adapereka zotsatira zabwino kwambiri?
Iyi ndi nkhani yofala kwambiri, ndipo magulu ambiri amagwera m'menemo.
Chomwe chikulozerako sichosiyana kwenikweni, koma lingaliro lolakwika lachidziwitso.
Kodi nchifukwa ninji chinthu chomwe chimasonyeza kusavala bwino chimakhala chovuta kutopa pansi pa-zochitika zenizeni padziko lapansi?
01
Anthu ambiri amapeza "mtundu wavuto" molakwika kuyambira pachiyambi.
Anthu ambiri akakumana ndi mawu akuti "kuvala pang'ono + kuthyoka kotsatira," zomwe amachita poyamba ndikuzindikira zachilendo.
Kodi gulu ili la zinthu ndi losakhazikika? Kodi pali zovuta pakukonza? Kapena zoyezetsa sizikugwirizana?
Koma ngati mutathetsa vutoli, mudzazindikira kuti ...
Zovala ndi kutopa kwenikweni sizili gulu lofanana la nkhani.
Kuvala, kwenikweni, ndizochitika pamwamba.
Mutha kuziganizira ngati zinthu zakuthupi zomwe zikupitilira "kudulidwa" ndi "kukanda".
Ndi zipangizo ziti zomwe zimafunika kuti zipirire ntchitoyi?
Ndi zophweka: zolimba, zowundana, komanso zovuta kuzidula.
Kutchula: Kuphunzira ndi Makhalidwe a Abrasive Wear Mechanisms
Monga mukuonera, -zinthu zambiri zosavala zimagawana izi:
High crystallinity
High modulus
Mphamvu yotsika pamwamba (yokhala ndi zida zopangira mafuta)
M'mawu ena, kuvala mayeso zotsatirazi:
Kodi pamwamba pake sungapirire kuwonongeka kwakunja?
Koma kutopa kumatsatira malingaliro osiyana kotheratu.
Kutopa kumachitika mkati mwazinthu ndipo ndi njira yowonjezera.
Kutengana kulikonse kwa giya kumakhala kagawo kakang'ono ka kupindika ndi kutambasula.
Ndikwabwino kuwonera kamodzi, koma vuto ndi ...
Izi zidzabwerezedwa kambirimbiri kapenanso miyandamiyanda
Kodi chimachitika ndi chiyani mkati mwazinthu panthawiyi?
Unyolo wa mamolekyulu umayenda mobwerezabwereza ndikumangika.
Kupindika kosasinthika kumachitika m'zigawo zokhazikika.
Zowonongeka zazing'ono zimakula pang'onopang'ono kukhala ming'alu.
Poyamba, simudzawona kusintha kulikonse.
Koma mng'aluwo ukakula kufika pamlingo wina wovuta kwambiri-
Kuwonekera kwakukulu ndi: kuphulika mwadzidzidzi.
Chifukwa chake, nkhani yayikulu si "chifukwa chiyani idasweka," koma m'malo mwake:
Kugwiritsa ntchito "kuyesa mavalidwe" kuti muwone "kutopa-kuchulukira" kuyambira pachiyambi ndikosayenera.
02
Kodi ndichifukwa chiyani "kukana kulimba kwamphamvu" kumayambitsa kutopa pafupipafupi?
Mukayika zovutazo moyenera, muwona chodabwitsa chomwe chimatsutsana ndi chidziwitso koma chofala kwambiri pakati pa-zigoli zambiri:
Njira zambiri zosinthira kukana kuvala zimasokoneza kukana kutopa kwa zinthu.
Izi sizinangochitika mwangozi; zimatsimikiziridwa ndi kapangidwe.
1. Kukwera kwa crystallinity, magawo a unyolo amakhala ochepa kwambiri.
Chifukwa chiyani zida monga POM, PBT, ndi PET zimawonetsa kukana kovala bwino?
Maunyolo a mamolekyu amasanjidwa mophatikizana kwambiri komanso{0}}zomveka bwino.
Ndizovuta kwambiri kuti anthu akunja alowe m'malo amenewo.
Koma ndipamene vuto lagona.
Mukakumana ndi kupsinjika nthawi ndi nthawi, zinthuzo ziyenera kuchita ntchito imodzi:
Mphamvu zimatulutsidwa kudzera mumayendedwe ang'onoang'ono a unyolo wa maselo.
Komabe, vuto ndi-zowoneka bwino kwambiri ndi:
Gawoli ndi lomangidwa.
Voliyumu yaulere ndi yaying'ono.
Pafupifupi palibe malo otchinga m'dera lanu
Zotsatira zake ndi:
Mphamvu yakunja ikagwiritsidwa ntchito, palibe malo oti iwonongeke-motero imakhazikika m'magawo apadera a unyolo-ndipo pamapeto pake imapangitsa kuti tcheni chachikulu chiduke.
2. Zodzaza nthawi zambiri zimakulitsa vutolo.
Akatswiri ambiri opanga ma intuitively amakhulupirira kuti:
Kuti musavale → Onjezani chowumitsira
Mwachitsanzo, fiberglass, carbon fiber, ndi inorganic powders.
Kwa nthawi yayitali, njira iyi ndi yomveka:
Pamwambapo ndizovuta
Kulimbikira kukana zokanda
Koma chimachitika ndi chiyani pazinthu izi mukamatopa?
owonjezera nkhawa
Chifukwa chake ndi chosavuta:
Utoto ndi "wopunduka".
Zodzaza "ndizosasinthika-zowonongeka".
Pansi pa kutsitsa mobwerezabwereza, mawonekedwe pakati pa zigawo ziwirizi amakumana ndi nkhawa yaikulu ya kukameta ubweya.
Kodi chimachitika ndi chiyani pakapita nthawi?
Interface delamination
Pangani ma microholes
Mng'alu umayamba kufalikira kuchokera pamphepete mwa filler.
Pomaliza, zomwe mumawona pa fracture pamwamba si fracture yofanana.
M'malo mwake, ndi vuto la kutopa komwe kumachitika mkati.
Kufotokozera mwachidule gawo ili, likhoza kufotokozedwa m'chiganizo chimodzi:
Mukufuna kuti zinthuzo zikhale "zosavunda-zosasunthika" komanso "zolimba," komabe kusatopa kumafunikira kuti zikhale "zamphamvu komanso zotha kutaya mphamvu."
03
Kodi kutsutsana kumeneku kungathetsedwe bwanji kuchokera kumalingaliro a uinjiniya?
Mukamapanga zinthu monga magiya, ma fani, kapena zolumikizira, zomwe kasitomala amafuna nthawi zambiri zimakhala zolunjika:
Siyenera kuonongeka kapena kuthyoledwa!
Ndiye vuto ndi ili:
Kodi tingatani kuti tizikhala ogwirizana pakati pa “kuuma mtima” ndi “kulimba mtima”?
Njira 1: M'malo mongowonjezera kuuma, choyamba yang'anani pakuchepetsa kukangana.
Ngati mumayang'ana zoyesayesa zanu zonse pa "kupititsa patsogolo kukana kwazinthu kudula",
Ndikosavuta kuwongolera dongosolo kunjira ya "kukhazikika kwakukulu → kutopa pang'ono."
Yesani njira ina:
M'malo molimbana ndi kukangana mwachindunji, chepetsani kukangana.
Kodi zimenezi ziyenera kuchitika motani kwenikweni?
Onjezani gawo lopaka mafuta lotengera silikoni{{0}
Onjezani -ufa wolemera kwambiri wa PE micro-
Kudzipangira-njira yodzipaka mafuta
Makhalidwe azinthu izi ndi:
✔ Simawonjezera modulus kwambiri
✔ Komabe, imatha kupanga kameta kakang'ono pamwamba
Zotsatira zake ndi:
Mbali ina ya mphamvu yakunja "imatha" osati "kudulidwa".
Kuwonongeka kobwera chifukwa cha kutopa kumakhala kochepa kwambiri.
Njira ②: Pangani "njira yogwiritsira ntchito mphamvu" osati kudalira chinthu chimodzi
Apa ndipamene zomera zambiri zosinthira zimawonetsa ukadaulo wawo weniweni.
Pakatikati si "更强," koma m'malo mwake:
Perekani danga mkati mwa zinthu zotayira mphamvu.
Njira yodziwika bwino ndi:
Monga aloyi dongosolo, mwachitsanzo POM/TPU
POM imapereka kulimba komanso kukana kuvala.
TPU imapereka elasticity ndi kutaya mphamvu.
Pamene crack ikufalikira:
Pomwe gawo losinthika likakumana ...
Mphamvu zimatengedwa.
Ming'alu imadutsa kapena kuthetsedwa.
Mukhoza kupereka ndalama zochepa za kukana kuvala.
Komabe, izi zinapangitsa kuti moyo ukhale wochuluka chifukwa cha kutopa.
Njira 3: Ngati bajeti ilola, gwiritsani ntchito zida zomwe zili ndi dongosolo lolondola mwachindunji.
Zida zina zimathetsa kusagwirizanaku kudzera mu kapangidwe kake ka maselo.
mwachitsanzo PEEK.
Kufotokozera kwake sikuli "chizindikiro chimodzi chokha chonyanyira."
M'malo mwake, imakhala ndi mawonekedwe awa nthawi imodzi:
Mayunitsi okhwima (mphete zonunkhira, magulu a ketone)
Flexible bond (ether bond)
Zotsatira zake ndi:
Zonse zolimba komanso zosavala-zosamva
imawonetsanso kuyenda kwamagulu ena
Ndiye mupeza kuti:
Zida zambiri zapamwamba-zogwiritsidwa ntchito poyendetsa ndege ndi zamankhwala),
Pomaliza, titazungulira kumbuyo, timabwerera kuzinthu izi.
Osati chifukwa ndi okwera mtengo, koma chifukwa:
"Zowonongeka zamapangidwe" zazinthu zotsika mtengo zimakhala zovuta kubweza kwathunthu kudzera mukupanga kokha.
Chofunikira kwambiri pamavuto amtunduwu si "kugwiritsa ntchito zida zolakwika," koma m'malo mwake:
Njira yowunika idagwiritsidwa ntchito molakwika.
Kuvala ndi kuyanjana kwa mphamvu pakati pa malo.
Kutopa ndiko kudzikundikira mphamvu mkati.
Ngati mumangoyang'ana pakukhathamiritsa metric imodzi mkati mwa TDS,
Ndikosavuta kufikira ungwiro mu gawo limodzi ndikulephera kuwongolera mu gawo lina.
Akatswiri odziwa zambiri samayang'ana "kukhathamiritsa metric imodzi"; m'malo mwake, amafuna kuti:
Pezani malo pakati pa kuuma, kulimba, kukangana, ndi kutha kwa mphamvu zomwe zimatsimikizira kuti-zikugwira ntchito kwanthawi yayitali.
Ngati mudakumanapo ndi izi:
Kuyesa koyamba kunayenda bwino; komabe panabuka nkhani zokhudzana ndi moyo wa chinthucho chikangoyamba kugwiritsidwa ntchito.
Makamaka ameneyo-
Mkhalidwe umene "sinkafunika kugaya, koma unasweka."
Izi mwina sizinangochitika mwangozi, koma kutopa-kuchititsa kulephera.
Yang'anani mosamala pakuthyoka kwake pogwiritsa ntchito maikulosikopu-yankho nthawi zambiri limakhalapo kale.