Valve sealing surface fesa waldi gami sarrafa bawul ya ce: ban saba da yadda zan iya amfani da ni

Valve sealing surface fesa waldi gami sarrafa bawul ya ce: ban saba da yadda zan iya amfani da ni

Bawul sealing surface fesa walda gami aiki tsari kunshi hudu matakai:
Shiri kafin ginawa, a waje kafin zubarwa, fesa da fesa bayan zubarwa.
(a) Shirya abubuwa
Tabbatar da bayanai, abubuwa, kayan aiki da matakai.
Kafin aiwatar ya kamata fahimtar ainihin jihar da basira na fesa workpiece bukatar rabin tasha bincike,
1, kaurin rufin. Kamar yadda aka saba, bayan spraying dole ne a dakatar da sarrafa injin, zuwa kauri mai kauri za a tanada don izinin sarrafawa, amma kuma la'akari da haɓakar thermal da raguwar spraying.
2, tabbatar da bayanan shafi. Dangane da zaɓin shine cewa bayanan shafi ya kamata su gamsu da bayanan aikin fesa, buƙatun gama gari, buƙatun fasaha da jigo na al'amarin, an raba haɗin haɗin gwiwa da bayanan Layer.
3, wasu sigogi: matsa lamba, girman foda, bindigar feshi da ƙimar motsi na aiki.
(2) da pre-zubar da workpiece waje
Shirye-shiryen waje shine tsarin tashin hankali na ƙarfin haɗin gwiwa na sutura da matrix
1, concave yankan magani, akwai gaji Layer da wasu manyan iri tsagi alamomi a waje, karkashin jigo na ƙarfi haƙuri, na iya dakatar da yanke zubar, samar da m sarari ga thermal spraying.
2, waje sharewa, kawar da gurbataccen mai, tsatsa, Paint Layer, don haka da cewa waje na workpiece ne mai tsabta, mai gurbatawa Paint za a iya cire tare da sauran ƙarfi tsaftacewa wakili, idan man ya shiga cikin matrix data, za a iya cire tare da harshen wuta dumama. , Tsatsa Layer na iya dakatar da leaching acid, injin niƙa ko yashi mai fashewa.
3, da waje coarsening, makasudin shi ne don ƙarfafa hadin gwiwa karfi na shafi da matrix, kawar da danniya sakamako, da rare amfani da sandblasting, bude tanki hakarkarin, gashi ja,
A: Yashi fashewa shine mafi ƙarancin, yashi zai iya zaɓar yashi ma'adini, yashi alumina, yashi mai sanyi, yashi abu zuwa kaifi da ƙarfi, dole ne ya kasance mai tsabta da bushewa, gefuna masu kaifi da sasanninta. Girman sa, girman matsi na yanayi, kusurwar fashewa, tazara, da lokacin ya kamata a dakatar da shi bisa ga takamaiman yanayi.
B: Ramin, ribbed, abin nadi. Domin m magani na shaft da hannun riga inji a waje, za a iya amfani da wani tsagi don jefar da mota katantanwa sauro, da roughness na tsagi da haƙarƙari a waje ya dace da RA6.312.5. Ba a ƙara mai sanyaya da ɗanɗano ruwa a cikin tsarin sarrafawa don magance aikin haƙarƙari na motar tanki, wanda zai iya mirgine ƙirar a waje, amma hana sasanninta masu kaifi.
C: The workpiece tare da mafi girma taurin iya dakatar da EDM zane da coarsening. Duk da haka, da bakin ciki shafi workpiece ya kamata a yi amfani da hankali. Hanyar cire gashi ta EDM tana amfani da waya mai kyau na nickel ko wayar aluminium azaman lantarki. Ƙarƙashin rinjayar baka, bayanan lantarki da waje na matrix an haɗa su da wani ɓangare, yana haifar da m waje. Bayan bayyanar da sabon waje coarsening, ya kamata hana tsarkakewa, shi ne tsananin haramta taba, adana a cikin mai tsabta, bushe halin da ake ciki, coarsening da wuri-wuri bayan spraying, kamar yadda ya saba spraying lokaci ba ya wuce sa'o'i biyu.
4. Rufin sassan da ba a fesa ba
Fesa a waje kusa da spraying, murfin yana buƙatar samun damar yin amfani da zanen gilashin zafi mai jurewa ko asbestos da shinge, buƙata bisa ga na'urar sauya amsa lokacin da murfin manne, amma don ƙarin kulawa ga bayanan daidaitawa yakamata ya sami takamaiman ƙarfi. , kuma wannan yana nufin ƙasa da aikace-aikacen ƙananan ƙarfe mai narkewa, don kada murfin tsarkakewa, hanya mai mahimmanci a waje, don magance matrix mai rami ba ya ƙyale sashin fesa, kamar Za a iya toshe shi da graphite block ko alli lebur ko dan kadan. sama da waje. Bayan spraying don kawar da shi, kula da lalacewa ga suturar, gefuna da sasanninta don ɓatacce.
(3) Fesa
Yi zafi zuwa digiri 100 zuwa 200 Celsius kafin a fesa don rage yawan zafin jiki. Ana iya preheated ƙananan guda a cikin tanda.
Fesa hade Layer na kasa iko tsakanin waya goma zuwa ashirin, foda tare da tsaka tsaki ko arewa carbonized harshen wuta, bayan aika da rendezvous na haske ja wuta daure, da shudi da ja hayaki. Idan ƙarshen ya kasance fari mai launi mai haske, bayyana cewa akwai alamun rauni ya kamata a gyara harshen wuta ko rage adadin foda, idan duhu ja, bayyana cewa babu narkewa, ƙara harshen wuta, sarrafa adadin foda da yawan ruwa. Idan adadin harshen wuta da foda yana da tasiri, za'a iya canza girman foda tare da abun ciki na nickel, kuma foda mai dauke da nickel za'a iya canza shi zuwa babban foda ko foda tare da adadi mai yawa na nickel. Ya kamata fesa ya kasance daidai da feshin waje, tazara a cikin iko gaba ɗaya a 180200MM.
Spraying abubuwa Layer: bayan spraying da hadin gwiwa Layer don cire ash foda da oxide fim tare da waya goga, aikace-aikace na baƙin ƙarfe foda tare da arewacin carbonization harshen, aikace-aikace na jan karfe foda ya kamata amfani da tsaka tsaki harshen wuta, da kuma yin amfani da nickel foda tsakanin su biyu. , ya danganta da ainihin sa da canjin sa. Ikon tazarar tsakanin 180200MM, tazarar feshi yayi girma da yawa, zafin jiki na narkewa yana da ƙasa, ƙimar yana jinkirin kuma makamashi bai isa ba, ƙarfin haɗin gwiwa yayi ƙasa, tsarin yana kwance, tazarar feshi yayi ƙanƙanta, foda ba ta da ƙarfi. , Ƙarfin tasiri yana da ƙarfi mai ƙarfi, tasirin tarawa yana da ƙasa, ƙarfin haɗin gwiwa yana da ƙasa. Matsakaicin motsi, godiya ga 70150MM/S, don auna ta wurin ma'aunin zafi da sanyio, ya kamata a daina fesa sama da digiri 250.
Bayan spraying workpiece sanyaya: sanyaya lokaci, da tashin hankali ne don hana shafi peeling da nakasawa na workpiece. Musamman ga wasu siffofi na musamman, ya kamata a ɗauki matakan kariya, kamar sanyaya na dogon lokaci a gefen injin, ko rataye ta a tsaye don sanyaya.
(4) zubarwa bayan feshi
Ramin rufewa, sarrafa injin da sauran matakai.
Rufe lissafin kusan kashi goma sha biyar cikin dari na ƙarar, porosity da pore tunanin wasu sun haɗa da ingantacciyar injin sa na gogayya biyu, na iya buga na'urar a cikin santsi bayan fesa mai, aikace-aikacen tafki na pore yana da fa'ida ga santsi, amma magance matsalar. injin hydraulic, pore da ɗigo mai sauƙi, tare da magancewa bayan fesa, yakamata a yi amfani da wakili mai rufe rami ta dakatar da hatimin rami.
Buƙatar wakili na hatimi: kyawawa mai kyau, juriya na sinadarai, babu rushewa, babu metamorphosis. Barga aiki a zazzabi, iya ƙarfafa shafi aiki, rare kakin zuma, epoxy, phenolic da sauransu.
Lokacin da daidaito na girma bayan fesa da roughness na waje ba zai iya gamsu da bukatar, shi wajibi ne don dakatar da inji sarrafa, iya amfani da juya ko nika sarrafa.
Valve ya ce: ban saba da yadda zan iya amfani da buƙatun buƙatun buƙatun bawul ɗin da aka yanke ba kamar yadda zai yiwu, ɗigon bawul ɗin hatimi mai laushi ba shi da ƙarancin ƙarfi, yanke tasirin ba shakka yana da kyau, amma ba mai jurewa ba, rashin aminci.
Ƙananan buƙatun buƙatun buƙatu na bawul ɗin da aka yanke, mafi kyawun ɗigowar bawul ɗin hatimi mai laushi yana da ɗan ƙaramin ƙarfi, tasirin yankewa yana da kyau ba shakka, amma ba juriya ba, rashin aminci.
1. Me yasa yake da sauƙi don motsawa lokacin da bawul ɗin kujeru biyu yana buɗewa kaɗan?
Don mahimmanci guda ɗaya, lokacin da matsakaici ke gudana nau'in budewa, kwanciyar hankali na bawul yana da kyau; Lokacin da matsakaicin matsakaici ya rufe, kwanciyar hankali na bawul ba shi da kyau. Bawul ɗin wurin zama biyu yana da ƙwanƙwasa guda biyu, ƙananan spool yana cikin ruɗaɗɗen ruɗaɗɗen ruwa, babba na sama yana buɗewa, don haka, a cikin ƙaramin aikin buɗewa, rufaffiyar rufaffiyar nau'in spool yana da sauƙi don haifar da girgizar bawul, wannan. shine dalilin da yasa ba za a iya amfani da bawul ɗin wurin zama biyu don ƙaramin aikin buɗewa.
2. Me ya sa ba za a iya amfani da bawul ɗin hatimi biyu azaman bawul ɗin da aka yanke ba?
Amfanin spool na kujeru biyu shine cewa tsarin ma'auni mai ƙarfi yana ba da damar bambancin matsa lamba ya zama babba, yayin da babban hasararsa shine cewa bangarorin biyu na rufewa ba za su iya kasancewa cikin kyakkyawar hulɗa a lokaci ɗaya ba, wanda ke haifar da babban ɗigo. Idan aka yi amfani da shi ta hanyar wucin gadi da kuma tilastawa don yanke taron, a bayyane yake tasirin ba shi da kyau, ko da an yi gyare-gyare da yawa (kamar bawul ɗin hannun hatimi biyu), ba a so.
3, menene madaidaiciyar bugun jini da ke daidaita aikin toshe bawul ba shi da kyau, Angle bugun bawul ɗin toshe aikin yana da kyau?
Madaidaicin bututun bawul ɗin bawul ɗin yana jujjuyawa a tsaye, kuma matsakaici yana gudana a kwance a ciki kuma daga tashar kwararar bawul ɗin dole ne ya juya baya, ta yadda hanyar kwararar bawul ta zama mai rikitarwa (siffa kamar jujjuya nau'in "S"). Ta wannan hanyar, akwai matattun yankuna da yawa, waɗanda ke ba da sarari ga hazo na matsakaici, kuma a cikin dogon lokaci, yana haifar da toshewa. Hanyar bugun bawul ɗin bugun jini na Angle shine madaidaiciyar shugabanci, matsakaici yana gudana kuma yana fita a kwance, kuma yana da sauƙin cire matsakaicin mara tsarki. A lokaci guda, hanyar kwarara yana da sauƙi, kuma matsakaicin sararin hazo yana da kaɗan, don haka bawul ɗin bugun jini na Angle yana da kyakkyawan aikin toshewa.
4. Me yasa tushen bugun bugun kai tsaye yake sarrafa bawul ɗin bakin ciki?
Ya ƙunshi ƙa'idar injina mai sauƙi: babban juzu'in zamiya da ƙaramin juzu'i. Bawul ɗin bugun bugun jini madaidaiciya mai motsi sama da ƙasa, tattarawa da ɗan danna kaɗan, zai sanya bawul ɗin da aka nannade sosai, ya haifar da babban bambanci na baya. Don haka, an ƙera bawul ɗin don ya zama ƙanƙanta sosai, kuma ana amfani da marufin tare da ɗan ƙaramin coefficient na fakitin PTFE, don rage bambance-bambancen baya, amma matsalar ita ce tushen bawul ɗin yana da bakin ciki, mai sauƙin lanƙwasa. , kuma rayuwar tattarawa gajeru ce. Don magance wannan matsala, hanya mafi kyau ita ce amfani da tushen bawul ɗin balaguro, wato nau'in bugun jini na Angle na daidaita bawul, tushen bawul ɗinsa yana da kauri 2 ~ 3 sau 2 fiye da madaidaiciyar bawul ɗin bawul ɗin bugun jini, da zaɓin filler na graphite mai tsawo. , Ƙarƙashin tushe yana da kyau, ɗaukar kaya yana da tsawo, ƙarfin juzu'i yana da ƙananan, ƙananan bambancin dawowa.
5. Me ya sa bambancin matsa lamba na bugun bugun kusurwa ya girma?
Bawul ɗin nau'in bugun jini na kusurwa ya yanke bambancin matsa lamba yana da girma, saboda matsakaici a cikin spool ko farantin farantin sakamakon ƙarfin jujjuyawar jujjuyawar juyi yana da ƙanƙanta sosai, sabili da haka, yana iya tsayayya da babban bambancin matsa lamba.
6. Me yasa rayuwar sabis na matsakaiciyar ruwa ta ke sahu tare da bawul ɗin malam buɗe ido na roba da bawul ɗin bawul ɗin fluorine gajere?
Desalting ruwa matsakaici ya ƙunshi low taro na acid ko alkali, suna da mafi girma lalata ga roba. Lalacewar roba tana da alaƙa da haɓakawa, tsufa da ƙarancin ƙarfi. Tasirin amfani da bawul ɗin malam buɗe ido da bawul ɗin diaphragm wanda aka lulluɓe da roba ba shi da kyau. Ma'anar ita ce roba ba ta jure lalata ba. Bayan da roba rufi diaphragm bawul aka inganta zuwa lalata juriya na fluorine liyi diaphragm bawul, amma diaphragm na fluorine liyi diaphragm bawul ba zai iya tsayawa sama da ƙasa nadawa da kuma karya, sakamakon da inji lalacewa, rayuwar bawul ya fi guntu. Yanzu hanya mafi kyau ita ce amfani da ruwa don magance bawul ɗin ball, ana iya amfani da shi tsawon shekaru 5 zuwa 8.
7. Me yasa bawul ɗin da aka yanke zai kasance da ƙarfi a rufe kamar yadda zai yiwu?
Ƙananan buƙatun buƙatun buƙatu na bawul ɗin da aka yanke, mafi kyawun ɗigowar bawul ɗin hatimi mai laushi yana da ɗan ƙaramin ƙarfi, tasirin yankewa yana da kyau ba shakka, amma ba juriya ba, rashin aminci. Daga yatsan yatsa da ƙanana, hatimi da ingantaccen ma'auni biyu, yanke hatimi mai laushi ya fi yanke hatimi mai wuya. Irin su cikakken aiki matsananci-haske regulating bawul, shãfe haske da stacked tare da lalacewa-resistant gami kariya, high AMINCI, yayyo kudi na 10 ~ 7, ya sami damar saduwa da bukatun da yanke-kashe bawul.
8. Me yasa bawul ɗin hannun hannu ya maye gurbin bawul ɗin kujera ɗaya da biyu amma bai cimma burinsa ba?
Bawul ɗin hannun riga, wanda ya fito a cikin shekarun 1960, an yi amfani da shi sosai a gida da waje a cikin shekarun 1970s, kuma bawul ɗin hannun hannu a cikin injin petrochemical da aka gabatar a cikin 1980s ya sami babban rabo. A wancan lokacin, mutane da yawa sun gaskata cewa bawul ɗin hannun hannu zai iya maye gurbin bawul ɗin wurin zama ɗaya da biyu kuma ya zama ƙarni na biyu na samfuran. A yau, ba haka lamarin yake ba, bawul ɗin wurin zama ɗaya, bawul ɗin wurin zama biyu, bawul ɗin hannun riga ana amfani dashi daidai. Wannan shi ne saboda bawul ɗin hannun hannu kawai yana inganta nau'i mai maƙarƙashiya, kwanciyar hankali da kulawa fiye da bawul ɗin wurin zama ɗaya, amma nauyinsa, toshewa da alamun yabo sun yi daidai da bawul ɗin wurin zama ɗaya da biyu, ta yaya zai maye gurbin bawul ɗin wurin zama ɗaya da biyu. ? Don haka, dole ne a raba shi.
9. Me ya sa zaɓe ya fi lissafi muhimmanci?
Lissafi da zaɓi idan aka kwatanta, zaɓin ya fi mahimmanci, mai rikitarwa. Domin lissafin kawai ƙididdige ƙididdiga ne mai sauƙi, ba ya dogara da daidaiton ƙirar kanta ba, amma akan daidaiton sigogin tsari da aka bayar. Zaɓin zaɓi ya ƙunshi ƙarin abun ciki, ɗan rashin kulawa, zai haifar da zaɓi mara kyau, ba wai kawai haifar da ɓatar da ma'aikata ba, albarkatun kayan aiki, albarkatun kuɗi, da kuma amfani da tasirin ba shi da kyau, kawo matsalolin amfani da yawa, kamar aminci. , rayuwa, ingancin aiki, da dai sauransu.