I. Waa maxay usha POM?
Usha POM (Usha Polyoxymethylene), oo sidoo kale loo yaqaan "Sai Gang Rod" ee Ingiriisiga, waa bar- dhalaalaysa, caag heersare ah oo heersare ah oo crystalline ah. Waxaa lagu sameeyay extrusion heerkul sare waxaana la gooyaa ulo dhexroor kala duwan leh. Waxaa loogu magac daray "Sai Gang" sababtoo ah waxqabadkeedu wuxuu la mid yahay kan biraha.
II. Tilmaamaha Waxqabadka Muhiimka ah
Guryaha Jirka: Dusha siman oo dhalaalaysa, midab huruud ah ama midab cad, crystallinity sare, hantida midabaynta wanaagsan, cabbirka deggan, heerka nuugista biyaha aadka u hooseeya (qiyaastii 0.2%-0.5%).
Qalabka Farsamada: Xoog sare, qallafsanaan sare, qallafsanaan sare, iska caabin xoog leh oo nasinta gurguurta iyo walbahaarka, iska caabbinta xirashada heer sare ah, is-saliid, iyo iska caabin daal, awood saameyn sare leh heerkulka hooseeya.
Guryaha kulaylka: Heerkulka kulaylka sarreeya ee qallooca, waxaa loo isticmaali karaa inta u dhaxaysa heerkulka -40 ℃ ilaa 104 ℃ isticmaalka muddada dheer, waxayna u adkeysan kartaa 120 ℃ muddo gaaban.
Guryaha Korantada: Kala duwanaansho yar oo lumis dielectric ah iyo dielectric joogto ah oo ka badan inta jeer ee ballaaran iyo heerkulka heerkulka, caabbinta wanaagsan ee arcs koronto, qalab koronto oo heer sare ah.
Alaabta Kiimikada: Waxay u adkaysataa dareerayaasha, saliidaha, asiidhyada daciifka ah, iyo saldhigyada daciifka ah, laakiin aan u adkaysan karin asiidh adag iyo oksidants xooggan.
III. Isbarbardhigga Tusaalooyinka ugu waaweyn
POM-C/H (madow/caddaan): Matalaya formaldehyde kobolymerized iyo homopolymerized formaldehyde siday u kala horreeyaan. Copolymerized formaldehyde waxay leedahay bar dhalaalaysa oo hooseeya, xasilloonida kulaylka wanaagsan, iska caabinta daxalka kiimikada, iyo sifooyin habaysan oo wanaagsan; Homopolymerized formaldehyde waxay leedahay crystallinity sare, iska caabin wanaagsan oo gurguurta, heerka balaadhinta kulaylka oo hooseeya, iska caabbinta xidhashada wanaagsan, xoogga farsamada, iyo adkaanta.
POM-H + PTFE (madow madow): Ku darista fiilooyinka PTFE (Teflon) ee POM-H, ilaalinta xoogga dabiiciga ah ee POM, isku-dhafka hoose ee isku-dhafka, saliidda si fiican, oo ku habboon wax soo saarka qaybaha kala-baxa sida xargaha.
IV. Farsamooyinka Hagaajinta Muhiimka ah
Daaweynta Qalajinta: POM waxay leedahay nuugista biyaha hooseeya, guud ahaan uma baahna qalajin. Haddii alaabta ceeriin ay qoyan tahay, waxaa lagu qallajin karaa 80-100 ℃ 2-3 saacadood. Si adag u mamnuuc in la qalajiyo heerkulka sare ee muddada-dheer.
Heerkulka Durida: Heerkulka foosto 160-205 ℃, heerkulka dhalaalka si adag ayaa loo xakameeyay 190-205 ℃, gabi ahaanba mamnuuc in ka badan 210 ℃. heerkulka caaryada 80-100 ℃.
Qiyaasaha Durida: Isticmaal xawaare dhexdhexaad ah oo dhexdhexaad ah, cadaadiska duritaanka 80-120 MPa, cadaadiska ku hay qiyaastii 80% cadaadiska duritaanka, wakhti ku filan oo haynta. Xawaaraha wareegga wareegga 30-60 rpm, cadaadiska dhabarka sida ugu hooseeya ee suurtogalka ah (3-8 Bar).
Taxadarrada Badbaadada: POM waxay leedahay xasillooni kuleyl oo liidata, heerkulka sare wuxuu sii deyn doonaa sunta sunta ah ee formaldehyde. Ka hor inta aan la xidhin, si fiican u nadiifi foosto HDPE ama PP si aad uga fogaato haynta alaabta.
V. Codsiga Domains
Mashiinnada Baakadaha Dawooyinka: Qaybaha xidhashada u adkaysta sida boolal-qaade, taayirrada xiddigaha, fiilooyinka ilka leh, taayirada silsiladaha, fiilooyin bannaan, iwm.
Warshadaha Gawaadhida: Dabaqyada kala badh, qalabka meeraha, guryaha gear-ka, xidhmooyinka xadhkaha, marshadaha bamka shidaalka, mashiinnada tuubada, iwm, waxay bedeli karaan naxaasta iyo biraha kale ee aan birta ahayn.
Alaabta Elektarooniga ah iyo Qalabka Korontada: Koofiyado furaha korantada ah, gacan-wareejinta, xidhiyaasha, sanduuqyada gearbox, qaybaha gudbinta daabacaha/sawiradaha, iwm.
Qalabka Makaanikada: Gears kala duwan, xajmiyaal, kamarado, bushings, sliders, guides, iwm, qaybo sax ah.
Alaabta Macmiilka: Ilkaha sibidhka, madaxyada buufinta, biibitaannada qalinka, xidheyaasha degdega ah, qalabka ay ku ciyaaraan, iwm.
Aaladaha caafimaadka: Qaybaha faleebo aan saliid lahayn, qaybaha saxda ah ee nuugayaasha, iwm.
VI. Hagaha Xulashada
Shuruudaha iska caabbinta sare ee adag iyo xirashada sare: Dooro POM-H homopolymer formaldehyde, oo ku habboon qaybaha xoogga badan sida qalabka saxda ah iyo xargaha.
Caabbin kiimikaad sare leh iyo shuruudaha dejinta: Dooro POM-C copolymer formaldehyde, oo leh xasillooni kulayl wanaagsan, daaqad habayn ballaaran.
Shuruudaha khilaafka hooseeya iyo is-saliimaynta: Dooro POM-H + PTFE, isku-dhafka hoose ee isku-dhafka, oo ku habboon xirmooyinka aan saliidda ahayn, sliders, iwm., qaybaha xoqidda.
Xiriirka cuntada iyo aaladaha caafimaadka: Dooro POM-cunto, si waafaqsan badbaadada cuntada iyo shuruudaha shahaadaynta caafimaadka.
VII. Kahortagga Isticmaalka
Daaweynta walaaca gudaha: Ulaha POM waxay leeyihiin cadaadis weyn oo gudaha ah, ka hor inta aan la samayn daaweynta ciribtirka cadaadiska gudaha si looga hortago foorarsiga xaashida iyo qallooca.
Xakamaynta heerkulka: Si adag u xakamee heerkulka habaynta si aad uga fogaato kulaylka. heerkulka isticmaalka muddada-dheer kama badna 104 ℃.
Daboolida: POM waxay leedahay ololid liidata, way gubi doontaa marka uu dabka gaadho, kuma habboona codsiyada qalabka elegtarooniga ah ee leh shuruudaha ololka sare.
Iska caabinta cimilada: Soo-gaadhista muddada-dheer ee bannaanka waxay u nugul tahay hoos u dhaca sababtoo ah fallaadhaha ultraviolet, codsiyada dibadda waxay u baahan yihiin xasiliyayaal. Xulashada qeexitaanka: Dhexroorka ulaha POM wuxuu u dhexeeyaa 0.5mm ilaa 400mm. Waxaad dooran kartaa dhexroorka iyo dhererka ku habboon iyadoo loo eegayo shuruudaha codsiga gaarka ah.
Waad ku mahadsan tahay waxqabadkeeda dhammaystiran ee heersare ah, ulaha POM waxay noqdeen doorasho wax ku ool ah oo lagu beddelayo biraha, dhimista kharashyada, iyo hagaajinta waxqabadka badeecada. Waxay ku jiraan boos muhiim ah oo ku yaal goobta balaastikada injineernimada.
Shirkadeena waxay si qoto dheer ugu hawlan tahay beerista balaastikada injineernimada ee waxqabadka sare leh iyo agabka dahaadhka, waxaana ka go'an inay bixiso xalal wax ku ool ah oo loogu talagalay warshadaha wax soo saarka ee heer caalami. Alaabooyinkayaga ugu muhiimsan waxaa ka mid ah bacaha balaastigga ah ee injineernimada sare sida polyoxymethylene (POM), ABS, nylon (PA), polycarbonate (PC), polyphenylene sulfide (PPS), polyethermide (PEI), polyethertherketone (PEEK), iwm. Iyada oo leh sifooyin aad u fiican sida iska caabin heerkul sarreeya, xirashada iska caabinta, iyo xoog sare, alaabadayada waxaa si weyn loogu isticmaalaa gawaarida tamarta cusub, elektiroonigga smart, mishiinnada warshadaha, hawada hawada iyo meelo kale.
