Amavalvuasetshenziswa njengesethi ephelele yemishini yokuhlukanisa umoya ezinhlelweni zamakhemikhali, futhi izindawo eziningi zokuvala zazo zenziwe ngensimbi engagqwali.Enkambweni yokugaya, ngenxa yokukhethwa okungalungile kwezinto zokugaya kanye nezindlela zokugaya ezingalungile, hhayi kuphela ukusebenza kahle kokukhiqiza kwe-valve kuncishisiwe, kodwa futhi izinga lomkhiqizo lithinteka kakhulu.Ngokwezici zezinto zensimbi engagqwali, sikhethe ukuqina okuqinile komsebenzi kanye nokumelana nokugqoka, futhi ikhwalithi yomkhiqizo isathinteka ngemva kokuba izinhlayiya eziqhumayo ziphukile ekucubunguleni.Eminyakeni yamuva nje, siye safunda izinto ezi-abrasive okwakhiwa kwazo kwe-abrasive kungagcina ubukhali, njenge-white corundum ne-chromium oxide, ukukhethwa kwamathuluzi abrasive kanye nendlela yokugwaza, njll. Usayizi wezinhlayiyana ikakhulukazi ukhetha i-w40, w14, w7 kanye no-W5, njll. Ezine zifanelekile.Ngokuhlolwa, kuye kwakhuthazwa futhi kwasetshenziswa ekukhiqizeni kwangempela, okungathuthukisi nje kuphela ikhwalithi yendawo yokuvala, kodwa futhi kuthuthukisa ukusebenza kahle kokukhiqiza futhi ithola imiphumela emihle kakhulu.
Ukuze i-valve igaye i-workpiece, okokuqala, ithuluzi lokugaya lihlanganiswe nesihlabathi, bese ukugaya kufezwa ngokusebenzisa i-abrasive eyakhiwe ingxube yezinhlamvu ezikhukhumezayo kanye noketshezi lokugaya.Amandla okugaya asho amandla asebenza endaweni yokugaya iyunithi.Amandla asetshenziswa ethuluzini lokugaya futhi asebenze endaweni okumele acutshungulwe ngezinhlayiya eziqhumayo.Uma ukucindezela kuncane kakhulu, umphumela wokugaya uzoba mncane, futhi ukucindezela kuzokwanda.Umphumela wokugaya uyathuthukiswa, futhi ukusebenza kahle kokugaya kuyathuthukiswa.Kodwa-ke, lapho ingcindezi ikhuphukela enanini elithile, ukugcwala kwenzeka, futhi ukusebenza kahle kokugaya ngokuvamile kufinyelela inani elikhulu.Ngemuva kwalokho, uma ingcindezi yendawo ngayinye iqhubeka nokukhuphuka, ukusebenza kahle kuzokwehla kunalokho.
Lokhu kungenxa yokuthi izinhlayiya ze-valve abrasive zinomkhawulo othile wokumelana nokucindezela.Uma leli nani elilinganiselwe lidlula, zizochotshozwa, zenze izinhlayiya ezilumayo zibe ngcono futhi zehlise ikhono lokuzigaya.Ngakho-ke, ingcindezi yeyunithi kufanele inqunywe ngokuya ngamandla nezici zokuchoboza ze-abrasive.Ngemva kokuhlolwa, amapharamitha alandelayo ngokuvamile kufanele akhethwe: ① Ekugayeni okumahhadlahhadla, ukuze uthole i-corundum abrasive emhlophe, khetha 0.2 ukuya ku-0.5 MPa.③ Ngesikhathi sokugaya kahle, khetha u-0.03～0.12MPa we-abrasive ye-jade emhlophe.
Isivinini sokugaya sisho isivinini sokunyakaza esihlobene sethuluzi lokugaya ebusweni bomsebenzi wokusebenza.Ijubane lokugaya liyipharamitha yenqubo ebalulekile yokulawula inani lokususwa okusele, isivinini sokususa kanye nekhwalithi yendawo ecutshunguliwe.Umfanekiso wesi-2 uyijika elijwayelekile lobudlelwano phakathi kokususwa kosayizi wengcezu yokusebenza, ubulukhuni bomshini womshini kanye nesivinini sokugaya.
Umsebenzi wethuluzi lokugaya kanye nethuluzi lalo lokugaya impahla ukulungisa okwesikhashana i-abrasive futhi uthole ukunyakaza okuthile kokugaya, futhi udlulisele ukwakheka kwayo kwejometri ku-workpiece ngendlela ethile.Ngakho-ke, izinto zokugaya kufanele zibe nokushumeka okufanele kwezinhlamvu ezi-abrasive kanye nokugcinwa kwesikhathi eside kokunemba kwayo kwejometri.I-Grey cast iron HT200 iyinto efanelekile yokwenza ukugaya.Isakhiwo sawo siqukethe usimende oqinile futhi ongagugi, i-ferrite enokuqina okuhle kanye ne-plasticity, futhi iqukethe i-graphite, enomphumela wokugcoba futhi kulula ukuyimisa nokucubungula..
Lapho isikhathi sokugaya esidingekayo ukuze uthole ikhwalithi yendawo eshiwo sikhulu kunesikhathi esidingekayo ukuze kukhishwe imajini.Ijubane lokugaya kufanele lincishiswe ngokufanelekile.Ngemva kokuhlola, amanani esivinini alandelayo afaneleka kakhulu: ①Ngesikhathi sokugaya, isivinini samathuluzi okugaya noma izinto zokusebenza ukuthi zigaywe ngu-20-50m/min.②Lapho i-valve igaya kahle, isivinini sethuluzi lokugaya noma isiqeshana somsebenzi okufanele sigaywe singu-6~12m/min.Ukukhethwa kwevelu yokumahhadla kwendawo Ubumahhadlahhadla bobuso bungenye yezinkomba eziyinhloko zekhwalithi yendawo.Inethonya elikhulu emsebenzini ongaphezulu.Inomthelela oqondile ekuhutsheni kwendawo, ukuqina kokuxhumana nokusebenza kokuvala, futhi ngesikhathi esifanayo kuthinta ukusebenza nokuphila komkhiqizo.Uma usebenzisa izindlela ezihlukene zokugaya kanye nosayizi bezinhlayiyana, ubulukhuni obutholakalayo bubuye buhluke.
Isikhathi sokuthumela: Oct-30-2021