Ngemva kweAMAVAVAZI EBHOLAisetshenziswa isikhathi eside, indawo yokuvala ye-valve disc kanye nesihlalo se-valve kuzogqokwa futhi ukucinana kuzoncipha.Ukulungisa indawo yokuvala kuwumsebenzi omkhulu futhi obaluleke kakhulu.Indlela eyinhloko yokulungisa ukugaya.Kundawo evaleka kakhulu evaleke kakhulu, idlula i-welding bese igaya ngemva kokuyijika.

1 Ukuhlanza kanye nenqubo yokuhlola

Hlanza indawo yokuvala epanini likawoyela, sebenzisa i-ejenti yokuhlanza echwepheshile, futhi uhlole umonakalo wendawo yokuvala ngenkathi ugeza.Ukuqhekeka okuhle okunzima ukukubona ngeso lenyama kungenziwa ngokubona amaphutha.

Ngemuva kokuhlanza, hlola ukuqina kwe-disc noma i-valve yesango kanye nendawo yokuvala yesihlalo se-valve.Sebenzisa okubomvu nepensela uma uhlola.Sebenzisa umthofu obomvu ukuze uhlole okubomvu, hlola ukubonakala kwendawo yophawu ukuze unqume ukuqina kwendawo yokuvala;noma sebenzisa ipensela ukuze udwebe imibuthano egxilile embalwa endaweni yokuvala ye-valve disc kanye nesihlalo se-valve, bese uzungezisa i-valve disc kanye nesihlalo se-valve ngokuqinile, bese uhlola indilinga yepensela Sula isimo ukuze uqinisekise ukucinana kwe-valve. indawo yokubeka uphawu.

Uma ukuqina kungalungile, ipuleti eliyisicaba elijwayelekile lingasetshenziswa ukuhlola indawo yokuvala yediski noma yesango kanye nendawo yokuvala yomzimba we-valve ngokulandelanayo ukuze kunqunywe indawo yokugaya.

2 inqubo yokugaya

Inqubo yokugaya empeleni iyinqubo yokusika ngaphandle kwe-lathe.Ukujula komgodi noma izimbobo ezincane ekhanda levalvu noma esihlalweni sevalvu ngokuvamile kungaphakathi kuka-0.5mm, futhi indlela yokugaya ingasetshenziselwa ukulungiswa.Inqubo yokugaya ihlukaniswe yaba ukugaya okuqinile, ukugaya okuphakathi nokugaya kahle.

Ukugaya ngendlela engafanele ukususa amaphutha afana nokuklwebheka, ama-indent, namaphoyinti okugqwala endaweni evalekayo, ukuze indawo yokuvala ithole izinga eliphezulu lokucaba kanye nezinga elithile lobushelelezi, futhi kubeke isisekelo sokugaya okuphakathi nendawo yokubeka uphawu. phezulu.

Ukugaya okumahhadla kusebenzisa ikhanda lokugaya noma amathuluzi esihlalo sokugaya, kusetshenziswa i-sandpaper enohlamvu olumahhadla noma unamathisele wokugaya, enosayizi wezinhlayiyana ongu-80#-280#, usayizi wezinhlayiyana ezimahhadla, umthamo omkhulu wokusika, ukusebenza kahle okuphezulu, kodwa imigqa yokusika ejulile kanye namaholoholo. indawo yokubeka uphawu.Ngakho-ke, ukugaya okungalungile kudinga kuphela ukususa ngokushelela i-pitting yekhanda le-valve noma isihlalo se-valve.

Ukugaya okuphakathi ukuqeda imigqa emagebhugebhu endaweni evalekayo futhi kuthuthukiswe ukushelela nokushelela kwendawo yokuvala.Sebenzisa i-sandpaper ehlanjululwe kahle noma i-abrasive abrasive paste, ubukhulu bezinhlayiyana buyi-280 # -W5, usayizi wezinhlayiyana ulungile, inani lokusika lincane, okuzuzisa ukunciphisa ukuhlukumeza;ngesikhathi esifanayo, ithuluzi lokugaya elihambisanayo kufanele lishintshwe, futhi ithuluzi lokugaya kufanele lihlanzeke.

Ngemuva kokugaya okuphakathi, indawo yokuxhumana ye-valve kufanele ikhanye.Uma udweba imivimbo embalwa ekhanda le-valve noma esihlalweni se-valve ngepensela, jika ikhanda le-valve noma isihlalo se-valve kancane, bese usula umugqa wepensela.

Ukugaya kahle kuyinqubo yokugcina yokugaya i-valve, ikakhulukazi ukuthuthukisa ukushelela kwendawo yokuvala.Ukuze kugaywe kahle, kungahlanjululwa ngamafutha enjini, uphalafini, njll. nge-W5 noma izingxenyana ezicolekile, bese usebenzisa ikhanda le-valve ukugaya isihlalo se-valve esikhundleni se-drama, ehambisana kakhulu nokuqina kwendawo yokuvala.

Uma ugaya, yiphendulele ngokwewashi cishe ngo-60-100 °, bese uyiphendulela cishe ngo-40-90 ° ngokuphambene.Gcoba kancane kancane.Kufanele ihlolwe kanye.Lapho ukugaya kukhanya futhi kucwebezele, kungabonakala ekhanda le-valve kanye nesihlalo se-valve.Uma kunomugqa omncane kakhulu futhi umbala umnyama futhi ugqamile, uwugcobe kancane ngamafutha enjini izikhathi eziningana bese usula nge-gauze ehlanzekile.

Ngemuva kokugaya, susa ezinye iziphambeko, okungukuthi, ukuhlanganisa ngokushesha ngangokunokwenzeka, ukuze ungalimazi ikhanda le-valve yomhlabathi.

Ukugaya okwenziwa mathupha, kungakhathaliseki ukugaywa noma ukugaywa kahle, njalo kuhamba ngenqubo yokugaya yokuphakamisa, ukwehlisa, ukuzungezisa, ukuphindaphinda, ukuthepha, nokuhlehlisa imisebenzi.Inhloso iwukugwema ukuphindaphinda kwethrekhi yokusanhlamvu elumayo, ukuze ithuluzi lokugaya nendawo yokuvala kugaywe ngendlela efanayo, futhi ukucaba nokushelela kwendawo yokuvala kungathuthukiswa.

3 isigaba sokuhlola

Enqubweni yokugaya, isigaba sokuhlola sihlala siqhutshwa.Inhloso ukugcina ukulinganisa isimo sokugaya nganoma yisiphi isikhathi, ukuze izinga lokugaya likwazi ukuhlangabezana nezidingo zobuchwepheshe.Kumele kuqashelwe ukuthi lapho ugaya ama-valve ahlukene, amathuluzi okugaya afanele amafomu ahlukahlukene okuvala uphawu kufanele asetshenziselwe ukuthuthukisa ukusebenza kahle kokugaya nokuqinisekisa ikhwalithi yokugaya.

Ukugaya ama-valve kuwumsebenzi ocophelela kakhulu, odinga ulwazi oluqhubekayo, ukuhlola, nokuthuthukiswa kokusebenza.Ngezinye izikhathi ukugaya kuhle kakhulu, kodwa ngemva kokufakwa, kusavuza umusi namanzi.Lokhu kungenxa yokuthi kukhona umcabango wokuchezuka kokugaya ngesikhathi sokugaya.Induku yokugaya ayiqondile, ayitshekile, noma i-engeli yethuluzi lokugaya ichezukile.

Njengoba i-abrasive iyingxube yoketshezi olunamanzi nolugayayo, uketshezi lokugaya luwuphalafini ovamile namafutha enjini kuphela.Ngakho-ke, isihluthulelo sokukhethwa okulungile kwama-abrasives ukukhetha okulungile kwama-abrasives.

4 Ungakhetha kanjani ama-abrasives ama-valve ngendlela efanele?

I-Alumina (AL2O3) I-Alumina, eyaziwa nangokuthi i-corundum, inobunzima obuphezulu futhi isetshenziswa kabanzi.Ngokuvamile kusetshenziselwa ukugaya izinto zokusebenza ezenziwe ngensimbi ekhonjiwe, ithusi, insimbi nensimbi engagqwali.

I-Silicon Carbide (SiC) I-Silicon carbide itholakala ngombala oluhlaza okotshani nomnyama, futhi ubulukhuni bayo bungaphezu kobe-alumina.I-silicon carbide eluhlaza ilungele ukugaya ama-alloys aqinile;I-silicon carbide emnyama isetshenziselwa ukugaya izinto ezithambile nezithambile, njengensimbi ekhonjiwe nethusi.

I-Boron carbide (B4C) inobulukhuni okwesibili kuphela kumpushana wedayimane futhi ilukhuni kune-silicon carbide.Isetshenziswa kakhulu esikhundleni sempushana yedayimane ukuze kugaywe ama-alloys aqinile futhi kugaywe izindawo eziqinile ezine-chrome-plated.

I-Chromium oxide (Cr2O3) I-Chromium oxide iwuhlobo lokuqina okuphezulu futhi i-abrasive enhle kakhulu.I-Chromium oxide ivame ukusetshenziswa ekugayeni kahle kwensimbi eqinile, futhi ngokuvamile isetshenziselwa ukupholisha.

I-iron oxide (Fe2O3) I-iron oxide nayo iyi-valve abrasive enhle kakhulu, kodwa ukuqina kwayo nomphumela wokugaya kubi kune-chromium oxide, futhi ukusetshenziswa kwayo kuyafana ne-chromium oxide.

Impushana yedayimane iyitshe eliyicrystalline C. I-abrasive eqinile esebenza kahle yokusika futhi ifaneleka ngokukhethekile ukugaya ama-alloys aqinile.

Ukwengeza, ukushuba kosayizi wezinhlayiyana eziqhumayo (usayizi wezinhlayiyana ze-abrasive) kunomthelela obalulekile ekusebenzeni kahle kokugaya kanye nokuqina kwendawo ngemuva kokugaya.Ekugayeni okumahhadlahhadla, ubulukhuni obungaphezulu be-valve workpiece ayidingeki.Ukuze uthuthukise ukusebenza kahle kokugaya, ama-abrasives-grained abrasives kufanele asetshenziswe;ekugayweni okuhle, isabelo sokugaya sincane futhi ukuqina kwendawo yokusebenza kuyadingeka ukuba kube phezulu, ngakho-ke ama-abrasives ahlanzekile angasetshenziswa.

Uma indawo yokuvala igaywe ngamaqhafu, usayizi wokusanhlamvu olumayo uvamise ukuba ngu-120#～240#;ukugaya kahle, yi-W40～14.

Ivalvu ishintsha ukuhuzuka, ngokuvamile ngokungeza uphalafini kanye namafutha enjini ngqo ku-abrasive.I-abrasive ehlanganiswe nophalafini ongu-1/3 kanye nowoyela wenjini engu-2/3 kanye ne-abrasive ilungele ukugaya amaholo;i-abrasive ehlanganiswe nophalafini ongu-2/3 kanye ne-1/3 yamafutha enjini kanye ne-abrasive ingasetshenziselwa ukugaya kahle.

Uma ugaya ama-workpieces ngobulukhuni obuphakeme, umphumela wokusebenzisa ama-abrasives ashiwo ngenhla awulungile.Ngalesi sikhathi, izingxenye ezintathu zama-abrasives kanye nengxenye eyodwa yesinqumelo esishisayo zingasetshenziswa ukuze kuhlanganiswe ndawonye, ​​​​futhi kuzokwakha unamathisele ngemva kokupholisa.Uma usebenzisa, engeza uphalafini noma uphethiloli bese uxuba kahle.

5 Ukukhethwa kwamathuluzi okugaya

Ngenxa yezinga elihlukile lomonakalo endaweni yokuvala ye-valve disc kanye nesihlalo se-valve, azikwazi ukucwaninga ngokuqondile.Esikhundleni salokho, inombolo ethile kanye nokucaciswa kwamadiski e-valve mbumbulu (okungukuthi, amakhanda okugaya) kanye nezihlalo zamavalvu mbumbulu (okungukuthi, izihlalo zokugaya) ezenziwe ngokukhethekile kusengaphambili zisetshenziselwa ukuhlola i-valve ngokulandelanayo.Gaya isihlalo kanye nediski.

Ikhanda lokugaya kanye nesihlalo sokugaya zenziwe nge-carbon steel evamile noma i-cast iron iron, futhi ubukhulu ne-engeli kufanele ilingane ne-valve disc kanye nesihlalo se-valve esibekwe ku-valve.

Uma ukugaya kwenziwa ngesandla, izinduku ezihlukahlukene zokugaya ziyadingeka.Izinti zokugaya namathuluzi okugaya kufanele kuhlanganiswe kahle futhi kungatsheki.Ukuze kuncishiswe amandla okusebenza futhi kusheshiswe isivinini sokugaya, ama-grinder kagesi noma ama-vibration grinders avame ukusetshenziselwa ukugaya.