I-valve sealing surface spray welding welding alloy processing process valve yathi: angazi ukuthi ngingangisebenzisa kanjani

I-valve sealing surface spray welding welding alloy processing process valve yathi: angazi ukuthi ngingangisebenzisa kanjani

I-valve sealing surface spray welding welding alloy process inezinyathelo ezine:
Ukulungiselela ngaphambi kokwakhiwa, ngaphandle kokulahlwa kwangaphambili, ukufafaza nokufutha ngemva kokulahlwa.
(a) Lungiselela izinto
Ukuqinisekiswa kwedatha, izinto, amathuluzi nezinqubo.
Ngaphambi kokuba inqubo iqonde isimo esingokoqobo kanye namakhono wesicelo esifuthwe sesicelo sokumisa uhhafu,
1, ubukhulu be-coating. Njengenjwayelo, emva sishaye kumele ayeke ukucutshungulwa umshini, ukuze enamathela ukushuba izobe igcinelwe ukucutshungulwa imvume, kodwa futhi acabangele ukunwetshwa ezishisayo kanye ukusikwa of sishaye.
2, ukuqinisekiswa kwedatha enamathela. Ngokusho kokukhethwa ukuthi idatha yokumboza kufanele yaneliseke ngolwazi lwe-workpiece efafaziwe, isicelo esivamile, isicelo sekhono kanye nesisekelo sendaba, ungqimba oluhlanganisiwe kanye nedatha yesendlalelo sendaba ihlukaniswe.
I-3, imingcele ethile: ingcindezi, usayizi wempushana, isibhamu sesifutho kanye nezinga lokunyakaza kwe-workpiece.
(2) ukulahlwa kwangaphambili kwe-workpiece ngaphandle
Ukulungiswa kwangaphandle kuyinqubo yokucindezeleka yamandla ahlangene we-coating kanye ne-matrix
1, ukwelashwa kwe-concave cutting, kukhona ungqimba olukhathele kanye nezimpawu ezinkulu ze-groove ngaphandle, ngaphansi kwesisekelo sokubekezelelana kwamandla, kungayeka ukusika ukulahla, kunikeze isikhala esihlanganisayo sokufafaza okushisayo.
I-2, ukuhlanza ngaphandle, ukuqeda ukungcoliswa kwamafutha, ukugqwala, ungqimba lwepende, ukuze ingaphandle le-workpiece lihlanzekile, upende wokungcola kawoyela ungasuswa nge-ejenti yokuhlanza i-solvent, uma uwoyela ungene kudatha ye-matrix, ungasuswa ngokushisa komlilo. , ungqimba lokugqwala lungamisa ukucwiliswa kwe-asidi, ukugaya umshini noma ukususwa kokuqhuma kwesihlabathi.
I-3, i-coarsening yangaphandle, inhloso ukuqinisa amandla ahlangene e-coating kanye ne-matrix, ukuqeda umphumela wengcindezi, ukusetshenziswa okungajwayelekile kwe-sandblasting, i-tank rib evulekile, ukudonsa izinwele,
IMPENDULO: Ukuqhuma kwesihlabathi kuyivelakancane kakhulu, isihlabathi singakhetha isihlabathi sequartz, isihlabathi se-alumina, isihlabathi sensimbi ebandayo, izinto zesihlabathi ezibukhali neziqinile, kufanele zihlanzeke futhi zome, imiphetho ebukhali namakhona. Ubukhulu bayo, usayizi wokucindezela komkhathi, i-engeli yokuqhuma, isikhawu, nesikhathi kufanele kumiswe ngokuya ngesimo esithile.
B: I-slot, i-ribbed, i-roller. Ukuze kuhlinzwe i-shaft kanye nomshini wemikhono ngaphandle, i-groove ingasetshenziswa ukulahla umiyane womnenke wemoto, futhi ubulukhuni be-groove kanye nombambo ngaphandle kufaneleke ku-RA6.312.5. Ayikho i-ejenti yokupholisa nemanzisayo eyengezwayo enqubweni yokucubungula ukuze ibhekane nocezu lokusebenza lwezimbambo zemoto yethangi, engagingqa iphethini ngaphandle, kodwa ivimbele amakhona acijile.
C: I-workpiece enobulukhuni obuphakeme ingamisa umdwebo we-EDM nokuqina. Kodwa-ke, i-workpiece yokugqoka encane kufanele isetshenziswe ngokuqapha. Indlela ye-EDM yokudonsa izinwele isebenzisa intambo ye-nickel enhle noma i-aluminium njenge-electrode. Ngaphansi kwethonya le-arc, idatha ye-electrode nengaphandle le-matrix kuhlanganiswe kancane, okuholela ekubeni ngaphandle kwamaholo. Ngemuva kokuvela kwe-coarsening entsha yangaphandle, kufanele kuvimbele ukuhlanzwa, kwenqatshelwe ngokuphelele ukuthinta, egcinwe endaweni ehlanzekile, eyomile, i-coarsening ngokushesha ngangokunokwenzeka emva kokufafaza, njengokujwayelekile isikhathi sokufafaza asidluli amahora amabili.
4. Isembozo sezingxenye ezingafafazi
Ukufafaza ngaphandle eduze kwesifutho, ikhava kumele ikwazi ukusebenzisa indwangu yengilazi ekwazi ukumelana nokushisa noma i-asbestos kanye nesithiyo, ngokwendlela yokuphendula umshini lapho i-clamp ikhava, kodwa iwukunaka kakhudlwana idatha yokulungisa kufanele ibe namandla athile. , futhi lokho kusho ukusetshenziswa okuncane kwe-alloy yephuzu elincibilikayo eliphansi, funa ukugcotshwa kokuhlanza, ukhiye ongaphandle, ukubhekana nembobo kawoyela ye-matrix akuvumeli ingxenye yesifutho, njengokuthi Ingavinjwa ngebhlogo yegraphite noma ushoki oyisicaba noma kancane. ephakeme kunangaphandle. Ngemva sishaye ukuqeda, naka umonakalo enamathela, imiphetho namakhona ukuze blunt.
(3) Ukufafaza
Shisisa ku-100 kuya ku-200 degrees Celsius ngaphambi kokufafaza ukuze unciphise umehluko wokushisa. Izingcezu ezincane zingashiswa kuhhavini.
Fafaza ungqimba oluhlanganisiwe lokulawula phansi phakathi kwezintambo eziyishumi kuya kwezingamashumi amabili, impushana enelangabi eliphakathi nendawo noma elisenyakatho, ngemva kokuthumela inqwaba yomlilo obomvu ngokugqamile, kanye nentuthu eluhlaza okwesibhakabhaka nebomvu. Uma ukuphela kumhlophe umbala ogqamile, cacisa ukuthi kunezibonakaliso zokulimala kufanele kulungiswe ilangabi noma ukunciphisa inani lempushana, uma kubomvu obomvu, kucacise ukuthi akukho ukuncibilika, ukwandisa ilangabi, ukulawula inani le-powder kanye nesilinganiso sokugeleza. Uma isilinganiso selangabi nempushana sisebenza kahle, ubukhulu bempushana bungashintshwa ngokuqukethwe kwe-nickel, futhi impushana equkethe i-nickel ingashintshwa ibe impushana eqinile noma impushana enenani elikhulu le-nickel. Isifutho kufanele sibe perpendicular ukuchelela ngaphandle, isikhawu in control jikelele at 180200MM.
Ukufafaza ungqimba lwezinto: emva kokufafaza ungqimba oluhlangene ukuze kukhishwe impushana yomlotha nefilimu ye-oxide ngebhulashi locingo, ukusetshenziswa kwe-iron powder nelangabi elisenyakatho ye-carbonization, ukusetshenziswa kwempushana yethusi kufanele kusebenzise ilangabi elingathathi hlangothi, kanye nokusetshenziswa kwempushana ye-nickel phakathi kwalokhu okubili. , kuye ngokuthi ingubani kanye noshintsho. Ukulawula isikhawu phakathi kuka-180200MM, isikhawu sokufutha sikhulu kakhulu, izinga lokushisa elincibilikayo liphansi, izinga lihamba kancane futhi amandla awanele, amandla ahlangene aphansi, isakhiwo asikhululekile, isikhawu sokufutha sincane kakhulu, impushana ayikwazi ukungena. , amandla omthelela aphindeka ngamandla, umphumela wokuqongelela uphansi, amandla ahlangene aphansi. Izinga lokuhamba, sibonga ku-70150MM/S, elizokalwa ngethemometha, kumadigri angama-250 kufanele kumiswe ukufafaza.
Ngemuva kokufafaza ukupholisa kwe-workpiece: isikhathi sokupholisa, ukungezwani ukuvimbela ukuxebuka kwe-coating kanye nokuguqulwa kwe-workpiece. Ikakhulukazi kwezinye izimo ezikhethekile, izinyathelo zokuvimbela kufanele zithathwe, njengokupholisa kwemvelo kwe-eksisi ende ehlangothini lomshini, noma ukulengiswa ngokuqondile ukuze kuphole.
(4) Ukulahlwa ngemva kokufutha
Imbobo yokuvala, ukucubungula umshini nezinye izinqubo.
I-akhawunti ye-Coating cishe amaphesenti ayishumi nanhlanu wevolumu, i-porosity kanye ne-pore ecatshangelwe okunye okuxhunywe emshinini wayo omuhle kakhulu we-friction pair, ingashaya ukubeka umshini endaweni ebushelelezi ngemva kowoyela wesifutho, ukusetshenziswa kwe-pore reservoir kunenzuzo ukushelela, kodwa ukubhekana nayo. umshini wokubacindezela, imbotshana kanye nokuvuza kalula, ukubhekana nakho ngemva kokufafaza, kufanele kusetshenziswe i-ejenti yokuvala imbobo yokumisa ukwelashwa kokuvala imbobo.
Isicelo se-ejenti yokufaka uphawu: ukungena kahle, ukumelana namakhemikhali, akukho ukuhlakazeka, akukho metamorphosis. Umsebenzi ozinzile emazingeni okushisa, ungaqinisa umsebenzi wokumboza, i-wax engavamile, i-epoxy, i-phenolic njalonjalo.
Lapho ukunemba kobukhulu ngemuva kokufafaza kanye nokuqina kwangaphandle akukwazi ukwaneliseka ngesicelo, kuyadingeka ukumisa ukucubungula umshini, ungasebenzisa ukuguqula noma ukugaya ukucubungula.
I-Valve ithe: angiyazi indlela engingasebenzisa ngayo izidingo zami zokuvuza kwe-valve esikiwe kancane ngangokunokwenzeka, ukuvuza kwe-valve yophawu oluthambile kuphansi uma kuqhathaniswa, ukunqanyulwa komphumela kuhle impela, kodwa akukwazi ukumelana nokuguga, ukwethembeka okubi.
Uma iphansi imfuneko yokuvuza ye-valve enqamukile, kuba ngcono ukuvuza kwe-valve yophawu oluthambile iba phansi uma kuqhathaniswa, umphumela wokunqamuka muhle vele, kodwa awukwazi ukumelana nokuguga, ukwethembeka okubuthakathaka.
1. Kungani kulula ukunyakazisa uma ivalve enezihlalo ezimbili ivulekile?
Ngomgogodla owodwa, lapho okuphakathi kuwuhlobo oluvulekile lokugeleza, ukuzinza kwe-valve kuhle; Lapho ukugeleza okuphakathi kuvaliwe, ukuzinza kwe-valve kubi. I-valve yesihlalo esiphindwe kabili inama-spool amabili, i-spool ephansi ingaphakathi kokugeleza ivaliwe, i-spool ephezulu isekugelezeni okuvulekile, ngakho-ke, emsebenzini omncane wokuvula, ukugeleza okuvaliwe kohlobo lwe-spool kulula ukubangela ukudlidliza kwe-valve, lokhu isizathu esenza ukuthi i-valve yezihlalo ezimbili ingakwazi ukusetshenziselwa umsebenzi omncane wokuvula.
2. Kungani ivalvu evala uphawu kabili ingakwazi ukusetshenziswa njengevalvu eyisikiwe?
Inzuzo ye-spool ye-valve enezihlalo ezimbili ukuthi isakhiwo sebhalansi yamandla sivumela ukuthi umehluko wengcindezi ube mkhulu, kuyilapho ububi bayo obuvelele ukuthi izindawo ezimbili zokuvala azikwazi ukuxhumana kahle ngesikhathi esisodwa, okuholela ekuvuzeni okukhulu. Uma kusetshenziswa ngokungemthetho futhi ngenkani ukunqamula umcimbi, ngokusobala umphumela awumuhle, ngisho noma wenze ukuthuthukiswa okuningi (njenge-valve yemikhono eqinile ephindwe kabili), ayifiseleki.
3, yikuphi ukusebenza okuqondile kwe-valve yokulawula i-valve engalungile, ukusebenza kwe-Angle stroke blocking valve kuhle?
I-spool ye-valve ye-stroke eqondile inyakazisa mpo, futhi okumaphakathi kuwukugeleza okuvundlile ukungena nokuphuma egunjini lama-valve amashaneli kufanele ibuyele emuva, ukuze indlela yokugeleza kwevalvu ibe yinkimbinkimbi impela (umumo onjengohlobo oluhlanekezelwe "S"). Ngale ndlela, kunezindawo eziningi ezifile, ezihlinzeka ngendawo yemvula ye-medium, futhi ngokuhamba kwesikhathi, kubangele ukuvinjelwa. Isiqondiso se-Angle stroke valve throttling yindlela evundlile, okuphakathi kugeleza futhi kuphume ngokuvundlile, futhi kulula ukususa okuphakathi okungahlanzekile. Ngesikhathi esifanayo, indlela yokugeleza ilula, futhi isikhala semvula esiphakathi sincane kakhulu, ngakho-ke i-valve ye-Angle stroke inokusebenza okuhle kokuvimbela.
4. Kungani isiqu sevalvu elawula i-stroke siba mncane?
Kuhilela isimiso esilula somshini: ukungqubuzana okukhulu kokuslayida kanye nokungqubuzana okuncane okugoqayo. Straight stroke valve stem up and down ukunyakaza, ukupakisha sicindezelwe kancane kancane, izobeka isiqu valve zisongwe kakhulu, ukukhiqiza umehluko omkhulu emuva. Ngenxa yalesi sizathu, isiqu se-valve senzelwe ukuba sibe sincane kakhulu, futhi ukupakisha kuvame ukusetshenziswa nge-coefficient encane yokupakisha i-PTFE, ukuze kuncishiswe ukuhlukana, kodwa inkinga ukuthi i-valve stem incane, kulula ukugoba. , futhi impilo yokupakisha ifushane. Ukuxazulula le nkinga, indlela engcono ukusebenzisa isiqu se-valve yokuhamba, okungukuthi uhlobo lwe-Angle stroke ye-valve elawulayo, isiqu sayo se-valve siwugqinsi izikhathi ezi-2 ~ 3 kunesiqu se-valve ye-stroke eqondile, kanye nokukhetha kokugcwalisa i-graphite yempilo ende. , ukuqina kwesiqu kuhle, impilo yokupakisha yinde, i-torque ye-friction incane, umehluko omncane wokubuya.
5. Kungani umehluko we-cut off pressure valve ye-Angle stroke valve mkhulu?
I-valve yohlobo lwe-angular stroke inqamule umehluko wengcindezi mkhulu, ngoba amandla aphumela ku-spool noma ipuleti le-valve ku-torque ye-rotation shaft mancane kakhulu, ngakho-ke, angakwazi ukumelana nomehluko omkhulu wengcindezi.
6. Kungani impilo yesevisi yendawo yokukhipha usawoti emanzini efakwe i-rubber butterfly valve kanye ne-fluorine lined diaphragm valve imfushane?
I-Desalting water medium iqukethe ukugcwala okuphansi kwe-asidi noma i-alkali, inokugqwala okukhulu kunjoloba. Ukugqwala kwerabha kubonakala ngokunwebeka, ukuguga namandla aphansi. Umphumela wokusetshenziswa kwe-valve uvemvane kanye ne-diaphragm valve efakwe irabha mubi. Umongo wukuthi irabha ayimelani nokugqwala. Ngemuva kokuthi i-valve ye-diaphragm yenjoloba ithuthukisiwe ukuze ikwazi ukumelana nokugqwala kwevalve ye-fluorine efakwe umugqa we-diaphragm, kodwa i-diaphragm ye-fluorine ene-diaphragm valve ayikwazi ukusukuma naphansi igoqe futhi iphukile, okuholela ekulimaleni komshini, ukuphila kwe-valve kufushane. Manje indlela engcono ukusebenzisa amanzi ukwelapha i-valve yebhola, ingasetshenziswa iminyaka emi-5 kuye kweyi-8.
7. Kungani i-valve yokusika kufanele ivalwe ngokuqinile ngangokunokwenzeka?
Uma iphansi imfuneko yokuvuza ye-valve enqamukile, kuba ngcono ukuvuza kwe-valve yophawu oluthambile iba phansi uma kuqhathaniswa, umphumela wokunqamuka muhle vele, kodwa awukwazi ukumelana nokuguga, ukwethembeka okubuthakathaka. Kusukela ekuvuzeni nokuncane, okuvalekayo kanye nezinga elikabili elithembekile, ukunqanyulwa kophawu oluthambile kungcono kunokusikwa uphawu oluqinile. Njengevalve elawula ukukhanya kwe-ultra-light esebenza ngokugcwele, evalwe futhi yapakishwa ngokuvikelwa kwe-alloy engagugi, ukwethembeka okuphezulu, izinga lokuvuza lika-10 ~ 7, ikwazile ukuhlangabezana nezidingo zevalvu enqamuliwe.
8. Kungani i-valve yomkhono ithathe indawo ye-valve yesihlalo esisodwa nesikabili kodwa ingawufezi umgomo wayo?
I-sleeve valve, eyaphuma ngeminyaka yawo-1960, yayisetshenziswa kakhulu ekhaya naphesheya ngeminyaka yawo-1970, futhi ivalvu yemikhono embonini ye-petrochemical eyethulwa ngawo-1980 yaba nenani elikhulu. Ngaleso sikhathi, abantu abaningi babekholelwa ukuthi i-valve ye-sleeve ingangena esikhundleni se-valve yesihlalo esisodwa nesikabili futhi ibe isizukulwane sesibili semikhiqizo. Namuhla, akunjalo, i-valve yesihlalo esisodwa, i-valve yokuhlala kabili, i-sleeve valve isetshenziswa ngokulinganayo. Lokhu kungenxa yokuthi i-sleeve valve ithuthukisa kuphela ifomu le-throttling, ukuzinza kanye nokugcinwa kangcono kune-valve yesihlalo esisodwa, kodwa isisindo sayo, izinkomba zokuvimba kanye nokuvuza zihambisana ne-valve yesihlalo esisodwa kanye ne-double, ingakwazi kanjani ukufaka i-valve yesihlalo esisodwa nesikabili. ? Ngakho, kufanele kwabiwe.
9. Kungani ukukhetha kubaluleke ngaphezu kokubala?
Ukubala nokukhetha kuqhathaniswa, ukukhetha kubaluleke kakhulu, kuyinkimbinkimbi kakhulu. Ngoba ukubala kumane kuyisibalo sefomula elula, akuncikile ekunembeni kwefomula ngokwayo, kodwa ekunembeni kwemingcele yenqubo enikeziwe. Ukukhethwa kuhilela okuqukethwe okwengeziwe, ukunganaki okuncane, kuzoholela ekukhethweni okungalungile, hhayi nje kuphela kubangele ukuchithwa kwabasebenzi, izinsiza ezibonakalayo, izinsiza zezezimali, futhi ukusetshenziswa komphumela akulungile, ukuletha izinkinga eziningi zokusetshenziswa, njengokwethenjelwa. , impilo, ikhwalithi yokusebenza, njll.