Mavavu akupera phala. Iti kusankha?

Chifukwa akupera mavavu?

Lapping ndi mtundu wa kupukuta, pamene abrasive particles, kugwa pakati pa mbali za kuuma osiyana, ophatikizidwa mu zinthu zofewa. Chotsatira chake, ukhondo wa pamwamba wa chinthu cholimba kwambiri pamagulu otsutsana ukuwonjezeka. Mankhwala a lapping amagwiritsidwa ntchito kwambiri pokonza magalimoto kuti apeze makwerero olondola a miyeso ya angular ya valve ndi mpando. Kwa mavavu opindika bwino, malo olumikizana nawo amakhala pafupifupi kawiri.

Kukwera kwapamwamba kwambiri kwa ma valve kumathetsa mavuto awiri:

• Amapanga chisindikizo chabwino pakati pa valavu ndi mutu, zomwe zingalepheretse mpweya kuti usatuluke panthawi yoponderezedwa.
• Zimalepheretsa kuyaka kwa ma valve, popeza kuwonjezereka kwa malo okhudzana kumapereka kutentha kwabwino kuchokera ku ma valve kupita kumutu.

Kupukuta kumachitika pogwiritsa ntchito mawonekedwe apadera - phala la mavavu - m'mphepete mwa mavavu, ndikutsatiridwa ndi kuzungulira kwawo pamutu.

The zikuchokera akupera phala

Zigawo zazikulu za ma valve lapping pastes ndi:

1. Mafuta omwe amawonjezera kutentha ndikuchepetsa kutentha pamalo opopedwa. Maphala ena, pofuna kuchepetsa kukhuthala, amapangidwa pamadzi.
2. Omwazika bwino abrasive kwa kupukuta.
3. Antioxidants omwe amachepetsa kuvala kwa mechanochemical.
4. Corrosion inhibitors omwe ali ndi zotsatira zabwino pa kulimba kwa valve.
5. Zowunikira zowunikira.

Kuchita bwino kwa phala lililonse la mavavu kumatsimikiziridwa ndi mtundu wa abrasive. Carborundum, grit ya diamondi, silicon dioxide, galasi, aluminium oxide, komanso silicon ndi boron carbides amagwiritsidwa ntchito.

Lapping phala kwa mavavu amagawidwa kuchokera coarse to fine. Mu coarse phala, ma abrasive particles ndi aakulu mokwanira, choncho amagwiritsidwa ntchito popangana movutikira. Kukwezera kukula kwa grit kwa phala, ndipamenenso kumangirira kumatha kuchitidwa nawo.

Mafuta ndi phala logaya ali ndi ntchito zosiyana: pamene abrasive amawonjezera kukangana, mafuta amatha kuchepetsa, ndikuchepetsa kudula. Mafuta (kapena madzi) ndiwonso maziko omwe tinthu tating'onoting'ono timasuntha panthawi yopukutira.

Ogwiritsa ntchito ena amangochepetsa kuchepetsa kukhuthala koyambirira kwa phala, zomwe sizovomerezeka: chifukwa chake, mphamvu yotsitsa ndi kudula kwa tinthu tating'onoting'ono tomwe timakhala tambirimbiri tachepa. Tinthu tating'onoting'ono timatsuka mwachangu, zomwe zimapangitsa kuti pakhale kuchuluka kwa ma lapping pawiri.

Mawonekedwe a Lapping

Mosasamala mtundu wa phala la valve, muyenera kutsatira zotsatirazi:

1. Musanayambe ntchito, m'pofunika akanikizire gawo kuti lapped monga wogawana monga n'kotheka kwa wosanjikiza lapping phala.
2. Chovalacho chimayenera kukanikizidwa nthawi zonse panthawi yopukutira mpaka mawonekedwe ochulukirapo awonekere pakati pa zigawozo.
3. Kuzungulira kwa chilolo kuyenera kuchitika mpaka mphamvu yosuntha zigawo zokwerera zitachepa: izi zikuwonetsa kuti tinthu tating'onoting'ono tambirimbiri tafinyidwa m'malo opangira, ndipo pali mafuta kapena madzi omangira.
4. Ngati phala likufunika kupitilizidwa, phala lakale limachotsedwa ndikuyika phala watsopano.

Kuwongolera kwabwino kwa valavu kunyumba kumatha kuchitidwa ndi njira ziwiri - "pa pensulo" ndi "palafini". Poyamba, mpaka zizindikiro zisanu ndi chimodzi zimayikidwa pamwamba pogwiritsa ntchito pensulo yofewa, yomwe iyenera kukhala yozungulira. Zigawo zapansi zimagwiritsidwa ntchito, ndipo 2 ... 3 kutembenuka kumachitika. Ngati zowopsa zitsalira, kugwedeza kuyenera kupitilizidwa. Kuti muwone "palafini", mbali zokwerera zimapukutidwa zouma ndikuyika pa pepala loyera loyera, kenako palafini pang'ono amatsanuliridwa mumpata. Ngati pambuyo pa maola 6-7 palibe zizindikiro za palafini kumbali inayo, kugaya kumatha kuonedwa ngati kokwanira.

momwe akupera valavu ndi kuona khalidwe akupera

Valve lapping phala. Chabwino nchiyani?

Makhalidwe otsatirawa a phala amapangidwa makamaka potengera mayankho a oyendetsa okha:

1. "Classic" (wopanga VMPavto, Russia). Yoyenera mitundu yonse ya injini, imakhala ndi magawo awiri, omwe amakulolani kuti muzichita mosadukiza ndikupera bwino. Kukula kwa njere kumachokera ku 0,53 mpaka 0,9 ma microns, ndipo amayamba kugwira ntchito pang'onopang'ono, pamene kuuma kwa malo opangira mankhwala kumasintha. Mtengo - kuchokera ku ma ruble 600. kwa 400 g wa mankhwala. Dziwani kuti VMPAuto imapanga phala lapadera kwambiri pansi pa mtundu womwewo - diamondi ndi akatswiri, omwe ali oyenera, motero, ndi injini za dizilo ndi mafuta okha. Mtengo wa phala zotere ndi wapamwamba: mwachitsanzo, diamondi - kuchokera ku 220 rubles. pa paketi 100 g.
2. ABRO Grinding Paste GP-201 kuchokera ku chizindikiro cha ABRO (USA). Lilinso ndi zigawo coarse ndi bwino-grained, amene ali mbali zosiyana za chidebe. Economical mowa, bwino anapitiriza kuzitikita pamwamba. Mtengo wa phukusi lolemera 100 g umachokera ku ruble 150.

3. Zotsatira (zopangidwa ku St. Petersburg). Phukusili limaphatikizapo mabotolo awiri a coarse ndi phala labwino, komanso dispenser kuti athandizire kuwongolera. Mtengo - kuchokera ku ma ruble 160. kwa 90 g wa mankhwala.
4. Permatex (wopanga - USA). Ndi gulu la pawiri phala sungunuka madzi, amene inu simungakhoze pogaya mavavu, komanso kuyeretsa pamwamba chrome galimoto. Mtengo - kuchokera ku ma ruble 550. za kulongedza.

Zindikirani kuti kugawikana kwa phala logaya kukhala akatswiri komanso osachita masewera olimbitsa thupi kumakhala kosasintha, ndipo kumangowonetsedwa mu kuchuluka kwa phukusi limodzi.

Momwe mungapangire lapping phala ndi manja anu, mavavu opukutira