Ama-paste okugaya ama-valve. Iyiphi ongakhetha?

Kungani ugaya ama-valve?

I-Lapping iwuhlobo lokupholisha, lapho izinhlayiya ezilumayo, eziwela phakathi kwezingxenye zobulukhuni obuhlukahlukene, zishunyekwa kwento ethambile. Ngenxa yalokhu, ukuhlanzeka kwendawo yomkhiqizo oqinile kubhangqa elingqubuzanayo kuyanda. Ama-compounds e-Lapping asetshenziswa kabanzi ekwenzeni ukulungiswa kwe-auto ukuze kutholakale ukuhlangana okulungile kobukhulu be-angular ye-valve nesihlalo. Kumavalvu agqitshwe kahle, indawo yokuxhumana icishe iphindwe kabili.

Ukwephuka kwekhwalithi ephezulu kwama-valve ngakho-ke kuxazulula izinkinga ezimbili:

• Idala uphawu olungcono phakathi kwe-valve nekhanda, okuzovimbela amagesi ukuthi angaphumi ngesikhathi sokucindezela.
• Ivimbela ukushiswa kwama-valve, njengoba indawo yokuxhumana eyengeziwe inikeza ukudluliswa kokushisa okungcono kusuka kuma-valve kuya ekhanda.

I-Lapping yenziwa ngokusebenzisa ukwakheka okukhethekile - ukunamathisela kwe-lapping kwama-valve - emaphethelweni ama-valve, kulandelwa ukujikeleza kwawo phezu kwekhanda.

Ukwakheka kokunamathisela kokugaya

Izingxenye eziyinhloko ze-valve lapping pastes yilezi:

1. Amafutha akhuphula amandla okushisa futhi anciphise izinga lokushisa ezindaweni ezimbozekile. Amanye ama-pastes, ukuze kuncishiswe i-viscosity, akhiqizwa emanzini.
2. I-abrasive ehlakazeke kahle yokupholisha.
3. Ama-Antioxidants anciphisa ukugqokwa kwe-mechanochemical.
4. Ama-Corrosion inhibitors anomphumela omuhle ekuqineni kwe-valve.
5. Izinhlanganisela ezikhanyayo.

Ukusebenza kwanoma iyiphi i-lapping paste yamavalvu kunqunywa uhlobo lwe-abrasive. I-Carborundum, i-diamond grit, i-silicon dioxide, ingilazi, i-aluminium oxide, kanye ne-silicon ne-boron carbides isetshenziswa.

I-Lapping paste yama-valve ihlukaniswa ukusuka kokumahhadla ukuya kwelihle. Ekunamekelweni okumahhadla, izinhlayiya ezilumayo zinkulu ngokwanele, ngakho-ke zisetshenziselwa ukugoqa okumaholo. Uma uphakeme usayizi wegrit we-lapping paste, ukugoqa kungenziwa kahle ngakho.

Amafutha nokugaya okunamathiselwe kunemisebenzi ephambene: kuyilapho i-abrasive ikhulisa ukungqubuzana, uwoyela uvame ukuwunciphisa, kuyilapho unciphisa isenzo sokusika. Amafutha (noma amanzi) aphinde abe yisisekelo lapho izinhlayiya ezilumayo ezihambayo ngesikhathi sokuxhashazwa.

Abanye abasebenzisi banciphisa ngokunganaki i-viscosity yokuqala yokunamathisela, okungamukeleki: ngenxa yalokho, amandla okulayisha kanye nomthelela wokusika wezinhlayiya eziqhumayo ezindaweni ezimboziwe ziyancishiswa. Izinhlayiya ngokwazo zigezwa ngokushesha, okuholela ekwandeni kokusetshenziswa kwe-lapping compound.

Izici zokuqhafaza

Kungakhathaliseki uhlobo lwe-valve lapping paste, kufanele uhambisane nezincomo ezilandelayo:

1. Ngaphambi kokuqala umsebenzi, kubalulekile ukucindezela ingxenye eboshwe ngokulinganayo ngangokunokwenzeka kungqimba lwe-lapping paste.
2. I-elementi okufanele igqitshwe kufanele ihlale icindezelwe phakathi nenqubo yokugoqa kuze kuvele ukwakheka ngokweqile esikhaleni esiphakathi kwezingxenye.
3. Ukujikeleza kwe-lap kufanele kwenziwe kuze kube yilapho amandla okuhambisa izingxenye zokukhwelana ancipha: lokhu kubonisa ukuthi izinhlayiya ezilimazayo zicindezelwa ngaphandle kwendawo yokucubungula, futhi kukhona i-oil noma i-binder yamanzi kuphela.
4. Uma i-lapping idinga ukuqhubeka, i-paste endala iyasuswa bese kufakwa unamathisele omusha.

Ukulawulwa kwekhwalithi ye-valve lapping ekhaya kungenziwa ngezindlela ezimbili - "ngepensela" kanye "kuphalafini". Esimweni sokuqala, amamaki afinyelela kwayisithupha asetshenziswa ebusweni kusetshenziswa ipensela elithambile, okufanele libekwe endaweni ye-radial. Izingxenye zomhlabathi zisetshenziswa, futhi 2 ... 3 ukuphenduka kwenziwa. Uma izingozi zisekhona, ukugqobhoza kufanele kuqhutshekwe. Ukuhlola "i-parafini", izingxenye zokukhwelana ziyasulwa zomile futhi zibekwe ephepheni lephepha elimhlophe elihlanzekile, emva kwalokho i-parafini encane ithululelwa esikhaleni. Uma ngemva kwamahora angu-6-7 kungabikho iminonjana kaphalafini ngakolunye uhlangothi, ukugaya kungabhekwa njengokuphelele.

indlela yokugaya i-valve futhi uhlole izinga lokugaya

I-valve yokunamathisela i-lapping. Yikuphi okungcono?

Isilinganiso esilandelayo sokunamathisela sihlanganiswa ikakhulukazi ngesisekelo sempendulo evela kubashayeli ngokwabo:

1. "Classic" (umkhiqizi VMPavto, Russia). Ifanele zonke izinhlobo zezinjini, ihlanganisa ukwakheka kwezingxenye ezimbili, okukuvumela ukuba wenze njalo ukugaya amaqhafuqhafu. Usayizi wokusanhlamvu usuka ku-0,53 kuya ku-0,9 microns, futhi aqala ukusebenza kancane kancane, njengoba ubulukhuni bezindawo eziphathwayo buyashintsha. Intengo yokukhishwa - kusuka kuma-ruble angama-600. ngo-400 g womkhiqizo. Kumele kuqashelwe ukuthi i-VMPauto ikhiqiza ama-pastes akhethekile kakhulu ngaphansi komkhiqizo ofanayo - idayimane nezobuchwepheshe, ezifanele, ngokulandelana, kuphela izinjini zedizili ne-petroli. Intengo yama-pastes anjalo iphakeme: isibonelo, ngedayimane - kusuka kuma-ruble angu-220. iphakethe ngalinye 100 g.
2. I-ABRO Grinding Paste GP-201 evela kuphawu lokuhweba lwe-ABRO (USA). Iqukethe nezingxenye ezimahhadlahhadla nezinohlamvu oluhle, ezitholakala ezingxenyeni ezihlukene zesitsha. Ukusetshenziswa komnotho, kugcinwe kahle endaweni ehlikihliwe. Intengo yephakheji enesisindo esingu-100 g isuka kuma-ruble ayi-150.

3. Umphumela (owenziwe eSt. Petersburg). Iphakheji ihlanganisa amabhodlela amabili ama-coarse and fine paste, kanye ne-dispenser ukuze kube lula inqubo yokudonsa. Intengo - kusuka kuma-ruble ayi-160. ngo-90 g womkhiqizo.
4. I-Permatex (umkhiqizi - USA). Iyingxenye yeqembu lama-pastes ahlanganiswe ngamanzi ancibilikayo, ongakwazi ukugaya ngawo ama-valve kuphela, kodwa futhi uhlanze izindawo ze-chrome zemoto. Intengo - kusuka kuma-ruble angama-550. yokupakisha.

Kumele kuqashelwe ukuthi ukuhlukaniswa kwama-pastes okugaya abe yizifundiswa nezimfundamakhwela akunangqondo, futhi kuvezwa kuphela ngevolumu yephakheji yomkhiqizo owodwa.

Ungawenza kanjani ama-lapping paste ngezandla zakho, ama-valve aqhoqhozayo