Ukusetshenziswa kobuchwepheshe be-plasma powder spray welding ekukhiqizeni ama-valve sealing surface

Ukusetshenziswa kobuchwepheshe be-plasma powder spray welding ekukhiqizeni ama-valve sealing surface

A, amaphutha e-valve avamile kanye nezizathu ekusetshenzisweni kwe-valve ohlelweni lwamaphutha avamile yilezi: 1. Ukujikeleza kwe-stem akuguquguquki noma ukujikeleza kwe-stem okunamathelayo akuguquki noma kubambezeleke, izizathu eziyinhloko yilezi: ukucindezela kokupakisha kuqinile kakhulu; Ibhokisi lokupakisha lokupakisha alijwayelekile; Isiqu se-valve kanye ne-stem bushing sebenzisa into efanayo noma ukukhetha kwempahla akulungile; Igebe elinganele phakathi kwesiqu nesihlahla; Ukugoba kwe-valve stem; Ubulukhuni bomucu abudingeki.
Okokuqala, ukwehluleka okuvamile kwe-valve kanye nesizathu
Amaphutha ajwayelekile ekusetshenzisweni kwama-valve yilawa:
1. Isiqu asiphenduki ngendlela eguquguqukayo noma sibambekile
Ukujikeleza kwe-stem akuguquki noma kubambelele, izizathu eziyinhloko yilezi: ukupakisha ukucindezela kuqine kakhulu; Ibhokisi lokupakisha lokupakisha alijwayelekile; Isiqu se-valve kanye ne-stem bushing sebenzisa into efanayo noma ukukhetha kwempahla akulungile; Igebe elinganele phakathi kwesiqu nesihlahla; Ukugoba kwe-valve stem; Ubulukhuni bomucu abudingeki.
2. Indawo yokuvala iyavuza
Izizathu eziyinhloko zokuvala ukuvuza kwendawo yilezi: ukuvala ukulimala kwendawo, njengokuhlehlisa, ukuhuzuka, ucingo oluphukile phakathi nendawo; Kukhona ukungcola okunamathiselwe phakathi kwendawo yokuvala noma indandatho yokuvala ayixhunyiwe kahle.
3. Ukupakisha kuyavuza
Isizathu sokupakisha ukuvuza yilezi: ipuleti lokupakisha lokucindezela alicindezelwe; Ukupakisha okunganele; Ukupakisha ngenxa yokungagcini kahle nokuhluleka; Ukuyindilinga kwesiqu se-valve kudlula okushiwo noma ingaphezulu lesiqu se-valve linemihuzuko, imigqa, izinwele kanye namaphutha amabi; Ukupakisha okuhlukahlukene, usayizi wesakhiwo noma ikhwalithi ayihlangabezani nezidingo.
4. Ukuxhumana phakathi kwe-valve yomzimba kanye nesembozo se-valve kuyavuza
Izimbangela ezingenzeka yilezi: ukuqiniswa okungalingani kwamabhawudi kumalunga e-flange kubangela ukutsheka kwe-flange, noma ukuqiniswa okunganele kwamabhawodi, nokulimala endaweni yokuxhuma yomzimba we-valve kanye nesembozo se-valve; I-gasket yonakalisiwe noma ayihlangabezani nezidingo; I-Flange joint surface ayifani, i-flange machining surface ayilungile; I-stem bushing kanye ne-stem thread mashinining impofu okuholela ekutshekeni kwekhava ye-valve.
5. Isango liphazamisa ikhava yevalvu
Lapho i-valve yesango ivulwa esimweni esivulekile ngokugcwele, ngezinye izikhathi isango alikwazi ukuvulwa ngokugcwele, futhi ukuphazamiseka phakathi kwesango kanye nesembozo se-valve kwenzeka. Isizathu siwukuthi isango alifakiwe ngendlela efanele noma i-geometry yekhava ye-valve ayihlangabezani nezidingo ezichazwe kuzinga.
6. Inqama ayivaleki kahle
Izizathu eziyinhloko zalolu hlobo lwesimo yilezi: amandla okuvala awanele; Phakathi kwesihlalo se-valve nesango libe yimfucumfucu; Indawo yokuvala i-valve ayicutshungulwanga kahle noma yonakale.
7. Ezinye izici, njenge-trachoma kanye nokuqhekeka kwendawo yokuvala okubangelwa ukukhubazeka kokuphonsa, kuzophinde kuthinte ukusetshenziswa okuvamile kwe-valve, futhi izinyathelo ezihambisanayo kufanele zithathwe ukuxazulula.
Okwesibili, isixazululo esivamile se-valve
Ngokwala maphutha angenhla, kufanele kuthathwe izindlela ezahlukene ukuze kuxazululwe ngokwesimo sangempela. Izixazululo eziqondile zikhonjisiwe kuthebula.
Okwesithathu, isiphetho
Ukuqinisekisa ukusetshenziswa okuvamile kwe-valve, ngaphezu kokunquma imbangela yephutha layo lenzeke ngokunembile nokuhlaziya, futhi uthathe izinyathelo ezihambisanayo zokuyixazulula, kufanele futhi uqinise ukuphathwa kwe-valve, wenze umsebenzi wokulondoloza nokuhlola nsuku zonke. , njengokunciphisa ukwehluleka kwe-valve kanye nokwenyusa izinga lobuqotho be-valve, iyenze idlale kakhulu kuchweba lokulayisha nokulayisha ukukhiqizwa kwezinto ezisetshenziswayo.
Ukusetshenziswa kobuchwepheshe bokushisela i-plasma powder spray ekukhiqizeni ama-valve seal surface surface inqubo ye-PPW esikhundleni sokuvela kwe-arc manual (noma ukuvela komlilo okwenziwa ngesandla), ** kunganikeza ukudlala okugcwele ezicini zenqubo ye-PPW, futhi kubonise izinzuzo eziyingqayizivele. Lokhu kungenxa yokuthi indawo yokuvala i-valve "inhliziyo" ye-valve, inqubo yokukhiqiza i-valve yokuvala i-valve kanye nezinto zokwakha zihlobene ngokuqondile nekhwalithi kanye nempilo yesevisi ye-valve, kodwa futhi ihlobene nezindleko zokukhiqiza i-valve. Indawo yokuvala i-valve idinga ububanzi obuthile bobulukhuni nobulukhuni obufanayo, ukumelana nokuhuzuka okuhle nokumelana nokugqwala okuthile, futhi ukwakheka kwe-alloy nakho kunezidingo ezihambisanayo.
Izinzuzo zokusetshenziswa ekukhiqizeni i-valve sealing surface
Kusetshenziswa inqubo ye-PPW esikhundleni sokuvela kwe-arc okwenziwa ngesandla (noma ukuvela kwelangabi okwenziwa ngesandla) ekukhiqizeni indawo yokuvala ama-valve, ** kunganikeza ukudlala okugcwele ezicini zenqubo ye-PPW, futhi kubonise izinzuzo eziyingqayizivele. Lokhu kungenxa yokuthi indawo yokuvala i-valve "inhliziyo" ye-valve, inqubo yokukhiqiza i-valve yokuvala i-valve kanye nezinto zokwakha zihlobene ngokuqondile nekhwalithi kanye nempilo yesevisi ye-valve, kodwa futhi ihlobene nezindleko zokukhiqiza i-valve. Indawo yokuvala i-valve idinga ububanzi obuthile bobulukhuni nobulukhuni obufanayo, ukumelana nokuhuzuka okuhle nokumelana nokugqwala okuthile, futhi ukwakheka kwe-alloy nakho kunezidingo ezihambisanayo.
Ngomthamo omkhulu kanye nobubanzi obubanzi bamazinga okushisa aphakathi nendawo namavalvu okucindezela kanye namavalvu omfutho ophezulu, amavalvu angagqwali, indawo yokuvala ngokuyisisekelo yenziwe nge-alloy Surfacing. Ngenxa yezinga eliphezulu lokuhlanjululwa kwensimbi eyisisekelo, ukuvela kwe-arc kwesendlalelo esisodwa akukwazi ukuhlangabezana nezidingo zokuqina nokwakheka kwealloy. Ngokuvamile, izingqimba ezingu-2-3 kufanele zibe ngaphezulu. Indawo yokuvala yokushisa ephezulu kanye ne-valve yokucindezela okuphezulu kanye ne-valve ukumelana nokugqwala kudinga ukuvela kwesisekelo esibizayo se-cobalt noma i-nickel base alloy, ukusetshenziswa kwe-surfacing manual, ukusetshenziswa kwezinto eziphansi, kanye nekhwalithi kunzima ukuqinisekisa. I-surfacing eyenziwe ngezandla imbi kakhulu futhi nenani lokusika ngomshini likhulu, futhi okungenye yezinto ezithinta izindleko zokukhiqiza. Inqubo ye-PPW yamukelwe, futhi izici zayo zenqubo ziyisixazululo esihle sokuxazulula izinkinga eziningi zokuvezwa okwenziwa ngesandla kwe-valve sealing surface:
Ubuchwepheshe be-Plasma powder spray welding bunezinzuzo
1, ngenxa yokuthi izinga lokuhlanjululwa kwensimbi lingalawulwa, ukushiswa kwe-monolayer spray kungafinyelela izidingo zokuqina kokuqina kanye nokwakheka kwe-alloy, konga inani le-alloy.
I-2, ifaneleka ngokukhethekile ukushisela isisekelo se-cobalt esibizayo kanye ne-nickel base alloy, i-spray welding layer yekhwalithi enhle, izinga eliphezulu lokusebenzisa i-alloy, hhayi ukuqinisekisa ikhwalithi nokunciphisa izindleko zokukhiqiza indawo yokubeka uphawu.
I-3, ngenxa yokuthi ungqimba we-welding we-spray lwakhiwe kahle, ubuso bushelelezi futhi bushelelezi, usayizi wokwakha ungalawulwa ngokunembile, ngakho-ke kulula ukusika nokunciphisa isikhathi sokusebenza sokucubungula ngomshini.
4, ukusetshenziswa kwe-iron alloy spray welding esikhundleni se-manual Surfacing 2Cr13 akudingi ukwelashwa kwe-anneal, kuqedwe inqubo yokucima - ukucisha.
I-5, ukusebenza kahle kokukhiqiza okuphezulu, kungaphezu kwezikhathi ezi-3 zokubonakala kwezandla.
Ngenxa yalezi zinzuzo ezingenhla, ngakho-ke kunqubo yokukhiqiza i-valve yokuvala indawo yokukhiqiza i-PPW, ikhwalithi, ukusebenza kahle okuphezulu, ukusetshenziswa okuphansi kwendlela yokukhiqiza, kunezinzuzo eziphakeme kakhulu zenhlalo kanye nezinzuzo eziqondile zezomnotho.
Ukuhlaziywa komnotho
Ngomthamo omkhulu kanye nobubanzi obubanzi bamazinga okushisa aphakathi nendawo kanye ne-valve yokucindezela (umkhiqizo wonyaka wezwe ngamakhulu ezinkulungwane zamathani), okwamanje abakhiqizi abaningi basebenzisa i-2Cr13 elula futhi elula eyenziwe ngesandla. Ukuthi ngabe inqubo ye-PPW ingangena esikhundleni sokuvezwa okwenziwa ngesandla kwe-2Cr13 kuncike ekutheni izindleko zokuvala zingancishiswa yini.
Izindleko zokukhiqiza indawo evalekile zakhiwa ikakhulukazi:
(1) Izindleko zezinto ezingaphezulu; (2) izindleko zabasebenzi zokuvula; (3) Izindleko zomshini zongqimba olungaphezulu; (4) Izindleko zokwelashwa kokushisa, njll. Hlaziya umnotho ngokuphathelene nalezi zindlela ezi-4 manje.
1. Izindleko zezinto zokwakha
Izindleko zezinto zokubeka phezulu zinqunywa ikakhulukazi ukusetshenziswa kwezinto ezingaphezulu kanye nentengo yezinto. Kunezidingo zokuklama ubukhulu nobubanzi bongqimba olungaphezulu endaweni yokuvala yohlobo oluthile lwevalvu, futhi ukusetshenziswa kwezinto ezingaphezulu kuncike esilinganisweni sokusetshenziswa kwe-alloy. Izinga lokusetshenziswa kwe-alloy engaphezulu lincike esilinganisweni sokuhlanjululwa kanye nokwakheka kokubukeka kwesisekelo sensimbi. Ngenxa yezinga eliphezulu lokuhlanjululwa kwesisekelo sensimbi yokuvela kwe-arc okwenziwa ngesandla, kuthatha izikhathi ezingaphezu kwezimbili zokuvelela phezulu ukuze kuhlangatshezwane nezidingo, ngakho-ke ubukhulu bomklamo womkhiqizo oqediwe wongqimba olungaphezulu ngokuvamile bukhulu kuno-3mm. Inqubo ye-PPW, izinga lokuhlanjululwa kwensimbi eliyisisekelo liphansi, inqobo nje uma ukushisela kanye kuzohlangabezana nezidingo, ubukhulu bomklamo womkhiqizo oqediwe wesendlalelo esingaphezulu bungancishiswa bube ngu-2mm. Ngenxa yokungekuhle kokusekwe phezu kwezandla, ukungalingani, kuvame ukujiya futhi kubanzi, izinga lokusebenzisa ungqimba olungaphezulu kwengxubevange * licishe libe ngu-40%. Izinga lokusetshenziswa kwe-alloy Surfacing layer ngenqubo ye-PPW lingafinyelela ku-70%.
Ukwehliswa kwe-arc okwenziwa ngesandla kususa i-electrode coating nekhanda le-electrode, futhi izinga lokusebenzisa impahla lingu-*70%, kuyilapho izinga lokusebenzisa i-PPW alloy powder lingafinyelela ku-95%.
Ithebula 1 liqhathanisa ukusetshenziswa kwezinto ezibonakalayo kanye nezindleko zempahla yezinqubo ezimbili ezingaphezulu. Ukuhlaziywa kanye nemiphumela yokuqhathanisa kubonisa ukuthi nakuba i-electrode ishibhile kune-alloy powder, ngenxa yezinga eliphansi lokusebenzisa i-electrode manual surfacing, isisindo sezinto ezisetshenzisiwe singaphezu kwezikhathi ze-3 zenqubo ye-PPW, ngakho-ke izindleko ezibonakalayo ze-arc manual. Ukuvela phezulu kuyizikhathi ezingu-1.9 kunenqubo ye-PPW. Lesi yisibalo esimangalisa kakhulu. Uma isamba se-electrode engu-2Cr13 esetshenziswa ifekthri yamavalvu ngayinye ingu-100T njalo ngonyaka, izindleko ezibonakalayo ziyizigidi ezingu-3.3 zama-RMB. Ngenqubo ye-PPW, ukusetshenziswa kwe-iron base alloy powder yi-33T, futhi izindleko zempahla zingaba yizigidi ezingu-1.82, ngakho-ke izindleko zempahla zizogcinwa 1.48 million RMB.
Indlela yokufaka i-welding
Izindleko zephrojekthi ye-PPW inqubo
Ukuvezwa kwe-arc ngesandla kwe-Fe-base alloy ngokushisela isifutho
2Kr13
Isisindo esisebenzayo sengxubevange yokubeka ubuso obuvaliwe, Kg11.5
Izinga lokusebenzisa ingxubevange yongqimba olungaphezulu ngu-70% 45%
Isisindo sengxubevange yongqimba olungaphezulu,Kg1.433.33
Izinga lokusetshenziswa kwezinto ezibonakalayo, %95%70%
Ukusetshenziswa kwe-alloy engaphezulu, Kg1.54.76
Intengo yeyunithi ye-alloy material ingu-5,533 yuan/kg
Izindleko zezinto, 82.5157 yuan
Isilinganiso senani lezindleko 11.9
2. Izindleko zabasebenzi zokushisela i-surfacing
Izindleko zesikhathi sokuvela zincike ekusebenzeni kahle kokukhiqiza kweqembu ngalinye labasebenzi. Kokubili ukuvela kwe-arc okwenziwa ngesandla kanye nokuvela kwe-PPW kudinga isisebenzi esisodwa kuphela ukuthi sisebenze. Inani elingaphezulu kwesisebenzi esisodwa ngokushintsha kwe-arc okwenziwa ngesandla licishe libe ngu-12Kg ngokwesilinganiso, kuyilapho lelo lenqubo ye-PPW lingafinyelela ku-20Kg. Ukuvela kwe-arc okwenziwa ngesandla uma ama-RAMS angu-12 avela esisebenzini esisodwa shift ngayinye, inqubo ye-PPW ingafafaza i-weld 60 RAMS, futhi ukusebenza kahle kokukhiqiza kuphindwe izikhathi ezingu-5 kunokwe-arc okwenziwa ngesandla. Uma izindleko zehora zokuvelela odwa kukagesi okwenziwa ngesandla zingamayuan ayi-10 ucezu ngalunye, izindleko zehora zenqubo ye-PPW zingamayuan angu-2 ucezu ngalunye *. Izindleko zesikhathi zokushisela i-surfacing ziyancipha kakhulu.
3. Izindleko zomshini zokubeka ungqimba
Ngenxa yenqubo ye-PPW, isendlalelo sokushisela isifutho sibushelelezi futhi sibushelelezi, futhi inani lokusika lincane. Nakuba ukuqina kongqimba lwe-welding kuthuthukiswa, ukusika okuqhubekayo kungafinyelelwa ngaphandle kokusika. Isikhathi esiphelele somshini siphansi kuneso sokwenza i-surfacing kagesi okwenziwa ngesandla, futhi izindleko zomshini zehliswa cishe ngama-20%.
4. Izindleko zokwelashwa kokushisa
I-2Cr13 kagesi ephuma ngesandla eyedwa, ngokuya ngenqubo yokukhiqiza, ngemuva kokuqedwa kokufakwa phezulu, isendlalelo sokushisela sinzima kakhulu ukuthi singasetshenzwa, ngakho singasetshenzwa ngokwelashwa kwe-anneal. Ngemuva komshini, ukuze kuzuzwe ubulukhuni bokubekwa uphawu, kufanele kucinywe ngemvamisa ephezulu bese kugaywa. Izimboni eziningi zama-valve azinaki ikhwalithi yendawo yokuvala, i-annealing processing mechanical, ayisekho ukwelashwa kokucisha imvamisa ephezulu, ngakho-ke ubulukhuni bokubeka uphawu buphansi, ukumelana nokuhuzuka kubi.
Inqubo ye-PPW, ubulukhuni bengqimba ye-welding yesifutho ingaphakathi kwebanga lezidingo ezishiwo, akudingeki ukuthi udlule ekwelapheni ukushisa (ingxube ye-welding ye-spray ayicimi), kodwa icutshungulwe ngokuqondile ibe yimikhiqizo eqediwe, ingagcina ukusetshenziswa kwamandla, kulula ukuvela izinkinga zekhwalithi. inqubo yokwelapha ukushisa. Inqubo ye-PPW, ayithuthukisi nje kuphela ikhwalithi ye-valve sealing surface, kodwa futhi yehlisa izindleko zokukhiqiza.
Kusukela ekuhlaziyweni okungenhla kwezomnotho kwezindleko zokukhiqiza indawo yokubekwa uphawu, kungaboniswa ukuthi inqubo ye-PPW ekusetshenzisweni kokukhiqiza ama-valve inezinzuzo zokuthuthukisa ikhwalithi, ukunciphisa izindleko, ukuthuthukisa ukusebenza kahle nokunye. Uma inqubo ye-PPW ingenziwa yaziwe futhi isetshenziswe embonini yokukhiqiza ama-valve ukuze kuthathelwe indawo indawo engemuva engemuva eyedwa kagesi, izinzuzo ezisobala zenhlalo nezomnotho zizotholakala.