Kuna ganin wannan tambayar tana fitowa sau da yawa yanzu, musamman daga injiniyoyin da ke ƙoƙarin daidaita aiki tare da umarnin dorewa. Zaton nan da nan shine sau da yawa cewa kowane shim filastik zai yi, ko kuma 'koren' ta atomatik yana nufin ɓoyayyen halitta ko takin zamani. A nan ne kuskuren farko ya faru. A cikin aikace-aikacen fasaha na kore-tunanin shigarwar hasken rana, daidaitawar bangaren injin turbine, ko taron fakitin baturi na EV-kayan ba kawai filler ba ne; dubawa ne mai mahimmanci. Yana buƙatar jure lalatawar UV, bayyanar sinadarai daga masu lantarki ko abubuwan tsaftacewa, hawan keke na yau da kullun, da kuma kula da kwanciyar hankali a ƙarƙashin kaya shekaru da yawa. Rashin gazawa a nan ba ƙaramin damuwa ba ne; zai iya haifar da rashin daidaituwa, karayar damuwa, ko rashin tsarin tsarin wanda gaba daya ya rage amfanin muhalli na fasahar kanta. Don haka, ainihin tambaya ba kawai game da buƙatar shim filastik ba. Yana da game da ƙayyade madaidaicin polymer don maƙiyi, yanayin rayuwa mai tsawo.
The Material Maze: It’s Never Just Plastic
Tun da wuri, mun koyi wannan hanya mai wuya. Wani abokin ciniki yana haɗa manyan gine-ginen hawan hasken rana kuma ya yi amfani da nailan na gama-gari, da ake samu na kasuwanci. A kan takarda, ya yi kyau-ƙarfi mai kyau, juriya mai kyau. Amma a cikin watanni 18 a cikin hamada, an samu rahotannin fashe-fashe da nakasa. Matsalar? Danshi sha. Nylon yana tsotse ruwa daga iska, wanda ke canza girmansa kuma yana rage taurinsa akan lokaci. A cikin wannan yanayi maras kyau, zafin rana da dare yana jan danshi a ciki da waje, yana haifar da rarrafe. Daidaita fa'idodin ya karkata, yana haifar da tsoma baki a cikin yawan kuzari. Wannan lamari ne na yau da kullun na rashin daidaituwar kayan da yayi kama da daidai a cikin takaddar amma ya gaza a filin.
Wannan gogewar ta tura mu zuwa ga ƙwararrun injiniyoyin injiniya. Don waje, manyan mahalli na UV, yanzu kusan koyaushe muna kallon kayan kamar m filastik shims Anyi daga UHMW-PE (Ultra-High-Molecular-Weight Polyethylene) ko wasu maki na polypropylene. Suna da ingantacciyar juriya na sinadarai, ƙarancin ɗanɗano na kusa-sifili, da lubricity na asali wanda ke da kyau don shigarwa kuma yana hana lalata galvanic lokacin amfani da shi tsakanin ƙarfe iri ɗaya. POM (Acetal) wani mai fafutuka ne don kwanciyar hankali da taurinsa, amma dole ne ku yi hankali da tsayin daka na tsayin daka na UV-yana buƙatar ƙarin abubuwan haɓakawa.
Makullin shine ɗaukar shim a matsayin ɓangaren lalacewa. Ba kawai kuna shimming don shigarwa ba; Kuna haskakawa don rayuwar sabis na shekaru 25 na gonar hasken rana ko rayuwar shekaru 20 na akwatin injin injin injin iska. polymer yana buƙatar tsayayya da kwararar sanyi (creep) a ƙarƙashin matsin lamba. Wannan shine inda bayanan bayanan suka gaza. Kuna buƙatar duba matsi na matsananciyar damuwa na dogon lokaci a kewayon zafin ku na aiki, ba kawai kayan aikin injiniya na ɗan gajeren lokaci ba. Yawancin masu samar da kayayyaki ba za su iya samar da wannan bayanan ba, wanda shine babban alamar ja.
Me yasa Karfe Ba Kullum Amsa ba ne (Kuma Lokacin Da Yake)
A cikin sassa na fastener da daidaitattun sassan duniya, tsoho galibi yawanci ƙarfe ne. An san shi, yana da ƙarfi, yana iya gwadawa. Kamfanin kamar Hebei dewell m karfe co., ltd (zaku iya samun fayil ɗin su a https://www.dewellfastener.com) daidai ya gina sunansa akan maɗauran ƙarfe da abubuwan haɗin gwiwa. Su babban kamfani ne a Yongnian, zuciyar masana'antun sassa na kasar Sin, don haka sun san karfe. Amma a cikin fasahar kore, kayan rufewar filastik ba za a iya sasantawa ba a lokuta da yawa. Yin amfani da shim karfe a cikin na'urar baturi na EV zai iya haifar da ɓatacciyar hanya ko gada mai zafi, lalata aminci da inganci.
Koyaya, korar karfe gaba ɗaya kuskure ne. Akwai hanyoyin haɗin kai. Wani lokaci, shim bakin karfe tare da murfin polymer ko laminate yana ba da cikakkiyar haɗakar ƙarfin matsawa da keɓewar lantarki. Kalubalen ya zama mai siyarwa wanda zai iya ɗaukar ɓangarorin biyu na wannan ma'auni-madaidaicin aikin ƙarfe da ƙwarewar aikace-aikacen polymer. Wani gibi ne a kasuwa. Yawancin kamfanoni ƙwararru ne a yanki ɗaya.
Anan ne tattaunawar da mai kaya ke samun gaske. Lokacin da kuke magana da masana'anta-tsakiyar ƙarfe, ilhamarsu na iya zama bayar da maganin bakin hatimi. Dole ne ku tura tattaunawar zuwa ga bukatun muhalli da lantarki. Za su iya samo asali ko abokin tarayya don madaidaicin polymer? Shin sun fahimci gwajin tsufa da ake buƙata? Kamfanin kamar Dewell, tare da R & D da haɗin gwiwar samarwa, an saita shi don kewaya wannan, amma yana buƙatar abokin ciniki don fitar da ƙayyadaddun bayanai fiye da na gargajiya.
Shaidan a cikin Cikakkun bayanai: Shigarwa da Bugawar Duniya ta Gaskiya
Ƙayyadaddun kayan da suka dace shine kawai rabin yakin. Yadda ake shigar da shim sau da yawa yana ƙayyade makomarsa. Na ga ƙayyadaddun ƙayyadaddun shims na UHMW-PE sun lalace saboda ma'aikatan shigarwa sun yi amfani da maƙarƙashiya don jujjuya murfin, suna haifar da isasshen zafi don narkewa a cikin gida da lalata filastik. Abun shim yana buƙatar haɗawa tare da ƙa'idar shigarwa daidai-sau da yawa tsarin jujjuyawar sarrafawa.
Wani daki-daki da ba a kula da shi shine jiyya na gefe. Yanke shim tare da kaifi mai tsaftataccen gefuna zai yi tsayayya da ƙaddamarwar fashewa da kyau fiye da wanda ke da ragi, matsananciyar gefe daga ƙayyadaddun ƙayyadaddun tsari ko yanke. Don ɓangarorin bakin ciki, wannan yana da mahimmanci. Kuna tambayar wannan ƙaramin filastik don ɗaukar nauyin ma'auni daga kawunan kullu kuma a rarraba shi daidai. Maƙarƙashiyar gefen gazawar da ke jiran faruwa.
Sannan akwai batun tara juriya. A cikin taron fasaha na kore, kuna iya samun gidaje na simintin gyare-gyaren ƙarfe, kayan injin da aka kera, da shim ɗin ku na filastik. Idan juriyar kaurin shim ɗin ya yi sako-sako da yawa, ko dai ba za ku cimma daidaitattun da ake buƙata ba ko kuma ku matsawa taron ƙoƙarin rufe gibin da ya yi yawa. Don mu'amala mai mahimmanci, mun matsa zuwa tantance shims tare da juriya na +/- 0.1mm ko mafi ƙarfi, wanda galibi yana nufin ƙaura daga arha, ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan mai samarwa.
Sourcing da Koren Tabbatar da Ciwon kai
Kowa yana son samfur mai dorewa. Amma don a m filastik shim, menene ma'anar kore a zahiri? An sake sarrafa abun ciki? Shin polymer ne da aka samo daga tushen halittu? Shin kawai yana ba da damar fasahar kore? Wannan yanki ne mai duhu. Yin amfani da shim tare da 30% abun ciki da aka sake yin fa'ida yana da kyau har sai kun gano rafin da aka sake yin fa'ida bai dace ba, yana lalata yanayin yanayin polymer na dogon lokaci. Hadarin gazawar ya yi yawa.
Mafi amfani, kuma mai yuwuwa mafi tasiri, tsarin kore shine tsawon rai. Bangaren kore shine wanda baya kasawa kuma baya buƙatar sauyawa, gujewa farashin carbon na kiran sabis, sabon sashi, da zubarwa. Saboda haka, ƙayyadaddun budurwa, polymer mai girma wanda ke ba da tabbacin rayuwar sabis na shekaru 25 na iya samun kyakkyawan sakamako na muhalli fiye da shim tare da abun cikin da aka sake fa'ida wanda ya gaza cikin shekaru 10. Wannan gaskiya ce mara dadi wacce ta sabawa da'awar tallace-tallace mai sauki.
Lokacin da ake samowa, dole ne ku yi tambaya ga sarkar kayan aiki. Shin masana'anta na iya ba da takaddun daidaiton tsari-zuwa-tsari? Shin suna ƙara masu haɓaka UV, anti-oxidants, da masu hana hydrolysis don takamaiman yanayin aikace-aikacen? Misali, a cikin injinan iska na bakin teku, juriya ga lalatawar gishiri shine mabuɗin don karafa, amma ga robobi, kuna buƙatar damuwa game da lalacewar sarƙoƙin polymer. Ba duk masu samar da kayayyaki ke tunani akan wannan matakin ba.
Harka a Batun: Karamar Nasara da Matsala mai Daurewa
Mun sami nasara tare da abokin ciniki yana haɗa kayan lantarki don masu canza hasken rana. Suna buƙatar shim don ware mashin zafi daga chassis. Suna amfani da injin wanki na PVC mai arha wanda ke lalata yanayin zafi kuma ya zama mai ɗaukar nauyi. Mun canza su zuwa madaidaicin mashin polyimide (PI) shim. Ya fi tsada kowane yanki, amma yana da ci gaba da aiki da zafin jiki sama da 250 ° C, kyakkyawan ƙarfin lantarki, kuma baya rarrafe. Adadin gazawar filin na taron ya ragu zuwa sifili. An kashe kuɗin ta hanyar kawar da gyare-gyaren garanti.
Amma a nan akwai matsala mai ɗorewa da ba mu warware daidai ba: launi. Don kula da inganci da aminci, injiniyoyi galibi suna son shims masu launi don kauri daban-daban. Duk da haka, abubuwan da ake amfani da su don canza launin robobi na iya zama wani lokaci a matsayin abubuwan lalata, musamman a ƙarƙashin bayyanar UV. Kyakkyawar shuɗi ko jajayen shuɗi na iya yi kyau a cikin masana'anta amma alli kuma ya ɓace cikin sauri a cikin rana, mai yuwuwar raunana shi. Nemo mai siyarwa wanda ke amfani da manyan ƙwararrun launuka masu ƙarfi UV waɗanda suka dace da polymer tushe ya fi ƙarfin sauti. Wani lokaci, mafi ingantaccen bayani shine a yi amfani da abu na halitta (sau da yawa fari ko fari) da kuma dogara ga etching laser ko bugu don ganewa - ƙara wani mataki da farashi.
Yana da'ira baya ga ainihin ra'ayin: babu wata cikakkiyar amsa daga kan-shirya. Tambayar ita ce farkon nutsewa mai zurfi. Kuna daidaita ilimin kimiyyar polymer, injiniyan injiniya, kimiyyar muhalli, da gaskiyar samar da sarkar. Shim daidai yana wanzu, amma gano shi yana buƙatar matsar da siyayyar katalogi na baya da cikin tsarin ƙayyadaddun ƙayyadaddun haɗin gwiwa tare da abokin tarayya wanda ya sami duka kimiyyar kayan abu da kuma rashin amfani na ƙarshe. Wani ƙaramin sashi ne wanda ke ɗaukar ra'ayi babba, kuma kore sosai.
