Ultra-yakakwirira-molecular-huremu polyethylene (UHMWPE, UHMW) inhengo ye thermoplastic polyethylene.Iyo inozivikanwawo seyakakwira-modulus polyethylene, (HMPE),…
Ultra High Molecular Weight polyethylene (UHMW-PE) injiniya thermoplastic ine huremu hwemorekuru hunodarika 3.1 AMUs (atomic mass units).Huremu hwema molecular huremu hunowedzera huwandu hwezvinhu zvakakosha zvemuviri, kwete zvishoma izvo zvakatanhamara abrasion resistance, high impact simba uye yakaderera coefficient of friction.Uye zvakare, iyo polymer ine yakanaka makemikari kuramba, yakanakisa inzwi rekunyorovesa maitiro, yepamusoro dielectric uye magetsi insulating zvivakwa uye haitore unyoro.
Izvi zvivakwa, zvakabatana nekureruka kwekugadzira machining, zvinogadzira UHMW-PE, inodhura-inoshanda zvinhu inosangana neFDA uye USDA zvinodiwa pakubata chikafu chakananga, inoshandiswa zvakanyanya mumaindasitiri ezvekudya, zvinwiwa, zvekurapa nemishonga.Hunhu husingapore hweHMW-PE hunotadzisa kukura kwefungus kana bhakitiriya.UHMW-PE inoshandiswawo zvakanyanya mukugadzira machira, kugadzirwa kwemakemikari, pulp uye bepa, migodhi, maritime, simbi, mvura uye kuchenesa tsvina, kubata zvinhu zvakawanda uye maindasitiri ekurima.
UHMW-PE zvivakwa zvinogona kukwidziridzwa kuburikidza nekushandiswa kwezvinowedzerwa senge colorants, UV uye heat stabilizers, anti-static agents, kupfeka-resistant mafirita uye kukwesha-kudzikisa mafuta.Simbi kana ores inogona kushandiswa kuwedzera huremu uye kuita kuti iyo polymer ionekwe nemagineti, nepo imwe filler ichiwedzera tembiricha yekushanda kwezvakatipoteredza.
Nekuti UHME-PE iri semi-crystalline polymer, inofanirwa kunyudzwa nekumisikidza kuumbwa kana gondohwe extrusion.Annealing, kusati kwaitwa machining, kunobatsira kubvisa kushandiswa kwakasimbiswa kunokonzerwa ne sintering.Zvikamu zvakapedzwa zvemuchina zvinogona zvakare kuvharwa, asi zvikamu zvakadaro zvinofanirwa kugadzirwa panguva yekutonhodza maitiro kuti zvibvumire shrinkage panguva yekuvhara.Kugadzira kwakakasharara kunofanirwa kuitwa kusati kwaita kushushikana-kudzoreredza kuitira kuti shanduko dzigone kugadziriswa panguva yekupedzisira machining.
Inowanikwa mumashiti akajairwa, tsvimbo, uye machubhu ekugadzira zvikamu zvakadzikama, UHMW-PE inogona kuchekwa, kugayiwa, kutenderedzwa, kurongwa, kudhonzwa kana kubaiwa.Maturusi ekucheka anofanirwa kuve neakakwirira reke angles uye yakakwana yechikepe clearance kudzivirira kuvhara.Madiro ekudya anofanira kunge akakwira kuitira kuti nguva shoma itenderwe kuti mudziyo wekucheka udziye zvinhu nekukweshana.Kuchengetedza kunofanirwa kutorwa kuchengetedza maturusi akapinza nekuti UHMW-PE inogona kukurumidza kugozha maturusi ekucheka macheto, zvichikonzera kukanganisa chikamu.Yepamusoro Yemhando yepamusoro pekupedzisira inogona kuwanikwa nekushandisa maturusi ekucheka akakodzera, kunyangwe kuyedza kuvandudza mapedzisiro asina kunaka nekuisa kana jecha kazhinji kunokonzeresa kuwedzera kutaridzika.
Mazhinji machining maitiro anobata kushivirira kwepakati +/-.005 uye +/-.010.Saw yekucheka mitsetse kusvika pakureba, zvisinei, ingangove +/- .030 sezvo mwero wakanyanya wepamusoro wemutsara wekuwedzera kupisa uye kudonhedza UHMW-PE inoita kuti hurefu hwechidimbu hwusangane nekushanduka kwezvakatipoteredza.
Machining Maitiro
Kucheka: Kucheka denderedzwa, mashizha ane carbide-tipped blades anopa migumisiro yakanakisisa.A 12-14 "dhayamita blade inofanira kuva nemazino anosvika makumi maviri nemana.Kumhanya kwekudya kunogona kubva pa10 kusvika ku40 tsoka paminiti.Kune bhendi rekuona blade ine mazino matatu painch, raker set uye positive rake ngirozi inokurudzirwa.Kumhanya kwekudya kunotangira pagumi kusvika pamakumi mana paminiti.
Kutendeutsa: Shandisa mabheti esimbi anomhanya zvikuru ane gumi” pamberi neparutivi uye 15-30” rake.Kudzika kwekucheka kwepakati pakati pe600 ne1,000 tsoka paminiti kunodiwa.Nekudaro, zvinowanzodikanwa kumhanya pakakwirira rpm kuchengetedza machipisi ari pachena pamushini.Kucheka zvinwiwa hazvifanirwe kuve zvakakosha, asi kuputika kwemhepo yakamanikidzwa dzimwe nguva kunobatsira mukubvisa chip.Paunenge uchiedza kuwana kushivirira kwepedyo kana chikamu chakatetepa madziro muUHMW-PE, muchina urikupfuura.Bvisa zvizhinji zvezvinhu pamutambo wekutanga, wobva warega chidimbu chigare uye chizorore usiku hwose.
Kugaya: Macheka akagadzirirwa machining aluminium anopa zvakanakisa mhedzisiro.Kucheka kumhanya kwe600 kusvika 1,800 tsoka paminiti kunokurudzirwa, nechiyero chakadyiswa chinosvika 0.01 inches per revolution.Router bits inoshanda nemazvo pakutsvoda uye kugaya chiedza.
Kuronga: Mapuranga ehuni anodzikisa nyore ukobvu uye chokwadi-kumusoro pamusoro peUHMW-PE.Muchina wakaomarara une mablades anopinza unopa yakanyatso bvisa stock uye yakanaka kupera kwepamusoro.Kuti uderedze kugona kuchinjika paunenge uchigadzira UHMW-PE, ndege hafu yehukobvu hunodiwa kubva kune rumwe rutivi rwepepa.
Kuchera: Zviboorero zvechinyakare zvekumhanya zvakaringana pazvishandiso zvakawanda zvekuchera.Kuti uite zvakakwana, shandisa yakaderera helix zviboorero zvine nyere dzakakwenenzverwa.Kuchera maburi ekutyaira kusati kwachera gomba hombe hakukurudzirwe kune UHMW-PE, nekuti zvimiro zvayo zvinoita kuti chibooreso chibate uye chidhonze icho pachacho muzvinhu.
Kukuya/Kuisa jecha: Nekuda kweUHMW-PE's abrasion resistant properties, kukuya nejecha kazhinji hazvishande.Kutaura zvazviri, kukuya kunogona kuita kuti zvinhu zvinyunguduke uye zvizore, zvoita kuti guyo rivharike.
UHMW-PE yakagadziridzwa nezvinowedzerwa segirazi kana esimbi oxides zvinozoguma nehupenyu hupfupi hwematurusi.Kunyangwe maturusi ecarbide achiwedzera hupenyu kune chishandiso, inoda kumhanya kwakanyanya uye mafidhi.Zvimwe zvinhu zvine chikamu chakanyanya chepamusoro cheabrasive additives hazvigoneke pakugadzira chero nzira.
Kugadzira uye Welding
UHMW-PE inogona kuve inopisa-yakaumbwa pabasa kuti iite mabhendi akareruka uye makona anofambisa kuisirwa.Hazvina mhosva kuti ndeipi nzira inosarudzwa - tochi, heater yemagetsi, ovheni kana bhati - kuchenjerera kunofanira kushandiswa uye kuedza kwese kunoitwa kusapisa zvinhu.UHMW-PE, senge chero mapurasitiki, ichapisa pasi pemamiriro asina kunaka.Pamusoro pezvo, iyo yakazara kutonhora kutenderera ichave yakati rebei kupfuura kutenderera kwekudziya nekuda kwehupamhi hwekuchengetedza kupisa maitiro eUHMW-PE.Kutonhodza hakufanire kuitika pane kongiri kana simbi nzvimbo nekuti maitiro acho achanyanya kukurumidza uye anogona kuunza kumwe kushushikana muzvinhu.Imwe kurudziro ndeyekuvhara zvinhu negumbeze rekudzivirira rakagadzirwa kubva pazvinhu zvakaita sefiberglass.
Cold-forming UHMW-PE inowanzoshandiswa kana paine kudiwa kwekukodzera macurves nemakona.Kungave uchishandisa brake press, rolling, handforming kana kushandisa mabhaudhi kudhirowa nekugadzira chidimbu chiri panzvimbo, kona nemacurves zvinofanirwa kunge zvakakwidibira ne75 kusvika 100 percent kutsiva maspringback maitiro eUHMW-PE.Iko kugona kwekunetseka kutsemuka kunogona kuderedzwa nekushandisa mapepa 3/8 ” kana kutetepa kana kutonhora-kuumba.
Spin kana frictional welding inogona kuwanikwa uchishandisa yakajairwa muchina lathe inokwanisa kuita 550 kusvika 560 rpm ine kugona kumisa kutenderedza ipapo ipapo brake yaiswa, uye simbi yekuchengetedza ndiro ye ¼” simbi, ine dhayamita ishoma pane flange. OD.Mhando yeweld iyi inoda maawa makumi mana nemasere ekupenya zvizere pombi isati yaiswa musevhisi.
Butt, kana hot plate wilding kuti ubatanidze flat sheets kuita zvidimbu zvirefu kana makoiri, zvinoda kushandiswa kwesimbi yekudziisa mudziyo, yakavharwa neasiri-tsvimbo agent, inokwanisa kusvika patembiricha inodiwa kuti iunze iyo polima kune yakanyungudutswa.Kuita uku kunoda kushandiswa kwemichina yakakosha yemusango kuwana mayunifomu welds ane simba riri pakati pe85 ne100 muzana yesimba rekutanga rezvinhu.
Adhesives
Iyo yakaderera coefficient ye friction, isina-porous surface yeUHMW-PE inoita kuti zviome kuti chero chinonamira chipinde mupolymer uye kugadzira chisungo.Bvunza mutengesi wako wekunamira kune akakurudzirwa maitiro ekubatanidza UHMW-PE kune akasiyana substrates, kunyangwe ma mechanical fasteners anokurudzirwa kune akawanda maapplication.
Nguva yekutumira: Jan-24-2018