Pambuyo paMAVAVU A MPIRAimagwiritsidwa ntchito kwa nthawi yayitali, kusindikiza pamwamba pa diski ya valve ndi mpando wa valve udzavala ndipo zomangira zidzachepetsedwa.Kukonza malo osindikizira ndi ntchito yaikulu komanso yofunika kwambiri.Njira yaikulu yokonza ndikupera.Pamalo osindikizira omwe awonongeka kwambiri, amawotcherera ndikupera pambuyo potembenuza.

1 Kuyeretsa ndi kuyendera ndondomeko

Tsukani malo osindikizira mu poto yamafuta, gwiritsani ntchito katswiri woyeretsa, ndikuwona kuwonongeka kwa malo osindikizira pamene mukutsuka.Ming'alu yabwino yomwe imakhala yovuta kuizindikira ndi maso imatha kuchitidwa pozindikira zolakwika.

Pambuyo poyeretsa, yang'anani kulimba kwa disc kapena valve valve ndi kusindikiza pamwamba pa mpando wa valve.Gwiritsani ntchito chofiira ndi pensulo pofufuza.Gwiritsani ntchito chiwongolero chofiyira kuti muyese chofiira, yang'anani chisindikizo chapamwamba kuti muwone kulimba kwa malo osindikizira;kapena gwiritsani ntchito pensulo kuti mujambule zozungulira pang'ono pamtunda wosindikiza wa valavu ndi mpando wa valve, ndiyeno tembenuzani diski ya valve ndi mpando wa valve mwamphamvu, ndipo yang'anani bwalo la pensulo Pukutsani zomwe zikuchitika kuti mutsimikizire kulimba kwa valve. kusindikiza pamwamba.

Ngati kulimba sikuli bwino, mbale yokhazikika yokhazikika ingagwiritsidwe ntchito kuyang'ana malo osindikizira a diski kapena chipata ndi malo osindikizira a thupi la valve motsatana kuti adziwe malo akupera.

2 akupera ndondomeko

Njira yopera ndiyo kudula popanda lathe.Kuya kwa mabowo kapena mabowo ang'onoang'ono pamutu wa valve kapena mpando wa valve nthawi zambiri amakhala mkati mwa 0.5mm, ndipo njira yopera ingagwiritsidwe ntchito kukonza.Njira yoperayo imagawidwa m'magulu akupera, apakati komanso akupera bwino.

Kugaya movutitsa ndikuchotsa zolakwika monga zokanda, ma indentations, ndi malo owononga pamtunda wosindikiza, kuti malo osindikizira azitha kupeza kusalala kwapamwamba komanso kusalala pang'ono, ndikuyala maziko akupera kwapakati kwa kusindikiza. pamwamba.

Kupera kosalala kumagwiritsa ntchito zida zopukutira pamutu kapena zida zapampando, pogwiritsa ntchito sandpaper yolimba-grained kapena coarse-grained grinding phala, yokhala ndi tinthu 80#-280#, tinthu tating'onoting'ono, voliyumu yayikulu yodulira, kugwiritsa ntchito bwino, koma mizere yodulira yakuya komanso yoyipa. kusindikiza pamwamba.Chifukwa chake, kugaya movutikira kumangofunika kuchotsa bwino kuyika kwa mutu wa valve kapena mpando wa valve.

Kupera kwapakati ndikuchotsa mizere yokhotakhota pamalo osindikizira ndikupititsa patsogolo kusalala ndi kusalala kwa malo osindikizira.Gwiritsani ntchito sandpaper yabwino-grained kapena bwino-grained abrasive phala, kukula kwa tinthu ndi 280 # -W5, tinthu tating'onoting'ono tating'onoting'ono tating'onoting'ono, zomwe zimapindulitsa kuchepetsa roughness;panthawi imodzimodziyo, chida chogwiritsira ntchito chiyenera kusinthidwa, ndipo chida chopera chiyenera kukhala choyera.

Pambuyo pakupera kwapakati, malo okhudzana ndi valve ayenera kukhala owala.Ngati mujambula zikwapu zingapo pamutu wa valavu kapena mpando wa valavu ndi pensulo, tembenuzirani mutu wa valve kapena mpando wa valve mozungulira mozungulira, ndi kufufuta mzere wa pensulo.

Kupera bwino ndi njira yomaliza ya kugaya valavu, makamaka kuwongolera kusalala kwa malo osindikizira.Kuti akupera bwino, amatha kuchepetsedwa ndi mafuta a injini, palafini, ndi zina zotero ndi W5 kapena tizigawo tating'onoting'ono, ndiyeno mugwiritseni ntchito mutu wa valve pogaya mpando wa valve m'malo mwa sewero, zomwe zimathandiza kwambiri kulimba kwa malo osindikizira.

Mukakupera, tembenuzirani mozungulira 60-100 °, ndiyeno mutembenuzire pafupifupi 40-90 ° mbali ina.Modekha pogaya kwa kanthawi.Iyenera kufufuzidwa kamodzi.Pamene kugaya kumakhala kowala komanso konyezimira, kumawonekera pamutu wa valve ndi mpando wa valve.Pamene pali mzere woonda kwambiri ndipo mtundu uli wakuda ndi wowala, pukutani mopepuka ndi mafuta a injini kangapo ndikupukuta ndi yopyapyala yoyera.

Pambuyo popera, chotsani zolakwika zina, ndiko kuti, kusonkhanitsa mwamsanga, kuti musawononge mutu wa valve pansi.

Kupera pamanja, mosasamala kanthu za kugaya movutikira kapena kugaya bwino, nthawi zonse kumadutsa munjira yopera yokweza, kutsitsa, kuzungulira, kubwezerana, kugogoda, ndi kubweza ntchito.Cholinga chake ndikupewa kubwerezabwereza kwa njanji yambewu ya abrasive, kuti chida chopera ndi malo osindikizira zikhale zofanana, ndipo kusalala ndi kusalala kwa malo osindikizira kungakhale bwino.

3 kuyendera gawo

Mu njira yopera, siteji yoyendera nthawi zonse imadutsa.Cholinga chake ndikudziwiratu zochitika zakupera nthawi iliyonse, kotero kuti khalidwe lakupera likhoza kukwaniritsa zofunikira zaumisiri.Tiyenera kukumbukira kuti pogaya ma valve osiyanasiyana, zida zopera zomwe zimayenera kusindikiza mitundu yosiyanasiyana ya pamwamba ziyenera kugwiritsidwa ntchito kupititsa patsogolo kugaya ndikuonetsetsa kuti kugaya bwino.

Kupukuta ma valve ndi ntchito yosamala kwambiri, yomwe imafuna chidziwitso chokhazikika, kufufuza, ndi kuwongolera machitidwe.Nthawi zina akupera bwino kwambiri, koma pambuyo kukhazikitsa, akadali kutayikira nthunzi ndi madzi.Izi zili choncho chifukwa pali malingaliro akupera kupatuka panthawi yopera.Ndodo yoperayo siimayima, yopindika, kapena mbali ya chida choperayo imapatuka.

Popeza kuti abrasive ndi osakaniza abrasive ndi akupera madzimadzi, madzimadzi pogaya ndi wamba palafini ndi injini mafuta.Choncho, chinsinsi cha kusankha koyenera kwa abrasives ndi kusankha koyenera kwa abrasives.

4 Momwe mungasankhire ma abrasives a valve molondola?

Alumina (AL2O3) Alumina, yemwenso amadziwika kuti corundum, ali ndi kuuma kwakukulu ndipo amagwiritsidwa ntchito kwambiri.Nthawi zambiri amagwiritsidwa ntchito pogaya zida zopangidwa ndi chitsulo chosapanga dzimbiri, mkuwa, chitsulo ndi chitsulo chosapanga dzimbiri.

Silicon Carbide (SiC) Silicon carbide imapezeka yobiriwira ndi yakuda, ndipo kuuma kwake ndikwapamwamba kuposa kwa alumina.Green silicon carbide ndi yoyenera kugaya zolimba zolimba;Black silicon carbide imagwiritsidwa ntchito popera zinthu zofewa komanso zofewa, monga chitsulo chosungunuka ndi mkuwa.

Boron carbide (B4C) imakhala ndi kuuma kwachiwiri kwa ufa wa diamondi komanso wolimba kuposa silicon carbide.Amagwiritsidwa ntchito makamaka m'malo mwa ufa wa diamondi pogaya ma aloyi olimba ndi kugaya zolimba zokutidwa ndi chrome.

Chromium okusayidi (Cr2O3) Chromium okusayidi ndi mtundu wa kuuma kwapamwamba komanso wonyezimira kwambiri.Chromium oxide imagwiritsidwa ntchito pogaya chitsulo cholimba, ndipo nthawi zambiri imagwiritsidwa ntchito popukuta.

Iron oxide (Fe2O3) Iron oxide imakhalanso yabwino kwambiri ya valve abrasive, koma kuuma kwake ndi kugaya kwake kumakhala koipa kuposa chromium oxide, ndipo ntchito yake ndi yofanana ndi chromium oxide.

Ufa wa diamondi ndi mwala wa crystalline C. Ndiwolimba kwambiri ndi ntchito yabwino yodula ndipo makamaka yoyenera kugaya zolimba zolimba.

Komanso makulidwe a abrasive tinthu kukula (tinthu kukula kwa abrasive) ali ndi zotsatira pa akupera dzuwa ndi pamwamba roughness pambuyo akupera.Mu akupera akhakula, pamwamba roughness wa valavu workpiece si chofunika.Pofuna kupititsa patsogolo kugaya bwino, ma abrasives opangidwa ndi coarse-grained ayenera kugwiritsidwa ntchito;mukupera bwino, gawo logaya ndi laling'ono ndipo kuuma kwapamwamba kwa workpiece kumafunika kukhala apamwamba, kotero kuti abrasives opangidwa bwino angagwiritsidwe ntchito.

Pamene malo osindikizira ndi ophwanyika, kukula kwake kwa njere kumakhala 120#～240#;pakupera bwino, ndi W40～14.

Valavu imasintha abrasive, nthawi zambiri powonjezera palafini ndi mafuta a injini mwachindunji ku abrasive.The abrasive blended ndi 1/3 palafini kuphatikiza 2/3 injini mafuta ndi abrasive ndi oyenera akupera coarse;abrasive blended ndi 2/3 palafini kuphatikiza 1/3 injini mafuta ndi abrasive angagwiritsidwe ntchito popera bwino.

Pamene akupera workpieces ndi apamwamba kuuma, zotsatira za ntchito abrasives tatchulazi si abwino.Panthawiyi, magawo atatu a abrasives ndi gawo limodzi la mafuta anyama otentha angagwiritsidwe ntchito kusakaniza pamodzi, ndipo amapanga phala pambuyo pozizira.Mukamagwiritsa ntchito, onjezerani palafini kapena petulo ndikusakaniza bwino.

5 Kusankha zida zopera

Chifukwa cha kuwonongeka kosiyana kwa malo osindikizira a diski ya valve ndi mpando wa valve, sangathe kufufuza mwachindunji.M'malo mwake, manambala ena ndi mafotokozedwe a ma valavu abodza (ndiko kuti, mitu yopera) ndi mipando yabodza (ndiko kuti, mipando yakugaya) yopangidwa pasadakhale imagwiritsidwa ntchito kuyang'ana valavu.Pewani mpando ndi disc.

Mutu wogaya ndi mpando wogaya umapangidwa ndi chitsulo wamba kapena chitsulo chosungunuka, ndipo kukula kwake ndi ngodya ziyenera kukhala zofanana ndi valavu ndi mpando wa valve woikidwa pa valve.

Ngati akupera ndi pamanja, zosiyanasiyana akupera ndodo chofunika.Ndodo zopera ndi zopera ziyenera kusonkhanitsidwa bwino osati zokhotakhota.Pofuna kuchepetsa mphamvu ya ntchito ndikufulumizitsa liwiro lakupera, zogaya zamagetsi kapena zopukutira zimagwiritsidwa ntchito pogaya.