M'njira yopangira nkhungu, gawo lopanga nkhungu nthawi zambiri limafunika kupukutidwa pamwamba. Kuphunzira ukadaulo wopukuta kumatha kusintha mtundu wa ntchito ndi moyo wa nkhungu motero kukonza mtundu wa malonda. Nkhaniyi ikufotokozerani momwe mungagwiritsire ntchito ndi njira zopangira nkhungu.
1. Njira yopangira nkhungu ndi mfundo yogwirira ntchito
Kupukutira kwa nkhungu nthawi zambiri kumagwiritsa ntchito miyala yamafuta, mawilo aubweya, sandpaper, ndi zina zambiri, kuti nkhope yake ikhale yopunduka ndipo gawo lokhazikika la cholembedwacho lichotsedwe kuti likhale losalala, lomwe nthawi zambiri limachitidwa ndi dzanja . Njira yopera komanso kupukutira bwino imafunika kwambiri pamwamba. Kupera ndi kupukuta kwabwino kwambiri kumapangidwa ndi chida chapadera. Mumadzi opukutira okhala ndi abrasive, imakanikizidwa pamwamba pamakina kuti ichite mozungulira kwambiri. Kupukuta kumatha kukwaniritsa kukwera kwa Ra0.008μm.
2. Njira yopukutira
(1) polish yaukali
Makina abwino, EDM, akupera, ndi zina zambiri zitha kupukutidwa ndi chojambula chozungulira chomwe chili ndi liwiro lozungulira la 35 000 mpaka 40 000 r / min. Ndiye pali mwala wamafuta wopangira, mafuta amiyala kuphatikiza palafini ngati mafuta kapena mafuta ozizira. Dongosolo logwiritsa ntchito ndi 180 # → 240 # → 320 # → 400 # → 600 # → 800 # → 1 000 #.
(2) theka-chabwino kupukuta
Kutsiriza theka kumagwiritsa ntchito sandpaper ndi palafini. Chiwerengero cha sandpaper chakonzedwa:
400 # → 600 # → 800 # → 1000 # → 1200 # → 1500 #. M'malo mwake, # 1500 sandpaper imagwiritsa ntchito chitsulo chokhwima chokha chokhwima (pamwambapa 52HRC), ndipo siyoyenera chitsulo cholimba kale, chifukwa chitha kuwononga pamwamba pazitsulo cholimbitsidwa kale ndipo sichingakwaniritse kupukutidwa komwe kumafunidwa.
(3) Kupukuta bwino
Chabwino kupukuta makamaka amagwiritsa Daimondi okhakhala phala. Ngati mukupera ndi gudumu la nsalu yopukutira ufa wosalala wa diamondi kapena phala la abrasive, dongosolo lopera mwachizolowezi ndi 9 μm (1 800 #) → 6 μm (3 000 #) → 3 μm (8 000 #). 9 μm phala la diamondi ndi kupukuta nsalu itha kugwiritsidwa ntchito kuchotsa zilembo za tsitsi ku 1 200 # ndi 1 50 0 # sandpaper. Kupukutira kumachitika kenako ndikumverera ndi phala la diamondi mu dongosolo la 1 μm (14 000 #) → 1/2 μm (60 000 #) → 1/4 μm (100 000 #).
(4) Malo opukutidwa ogwira ntchito
Njira zopukutira zikuyenera kuchitidwa padera m'malo awiri ogwirira ntchito, ndiye kuti, malo opera osalala komanso malo opukutira abwino apatulidwa, ndipo chisamaliro chiyenera kutengedwa kuti kuyeretsa mchenga womwe udatsalira pamwamba pa workpiece m'mbuyomu ndondomeko.
Nthawi zambiri, pambuyo pakupukuta kovuta ndi mwala wamafuta kupita ku 1200 # sandpaper, chogwirira ntchito chimafunika kupukutidwa kuti chiyeretsedwe popanda fumbi, kuwonetsetsa kuti palibe tinthu tating'onoting'ono mumlengalenga tomwe timatsatira nkhungu. Zowona zowonjezera pamwamba pa 1 μm (kuphatikiza 1 μm) zitha kuchitidwa mchipinda choyera chopukutira. Pofuna kupukuta bwino, iyenera kukhala pamalo oyera, chifukwa fumbi, utsi, dandruff ndi madontho amadzi amatha kupukutira pamalo opukutidwa bwino kwambiri.
Ntchito yakupukutira ikamalizidwa, pamwamba pa workpiece iyenera kutetezedwa ku fumbi. Makina opukutira akaimitsidwa, ma abrasives onse ndi mafuta otsekemera ayenera kuchotsedwa mosamala kuti zopezeka pa workpiece zikhale zoyera, kenako mawonekedwe a nkhungu odana ndi dzimbiri ayenera kupopera pamwamba pa chopangira ntchito.
Post nthawi: Jan-10-2021