Sandpaper: bo bitsa le ho sebelisa

Ka ho bua sandpaper hangata ho thoeng ke "sandpaper" kapa "ea letlalo."

Ho na le e le pampiri kapa lesela botlaaseng a tlotsitsoeng le mokato ea lintho tse bonahalang khorofo.

Ka tlhahiso ea ho amahanngoa le ho e lokisa ka lehong, ka polasetiki, tšepe, khalase sitoa ho etsa ntle le nazhdachki. Ho ke ba bohlokoa haholo ha ho tlosa pente ea khale, ho na le ho na mefuta e meng haeba u lokela ho lokisa holim tsa selelekela le pente, joalo-joalo

Machaena ea boholo-holo lilemong tsa bo13 ka thuso ea sekgomaretsi e thehiloeng starch khomarela ka dipeo entsoeng ka letlalo dimela, lehlabathe khabeloa fatše le likhetla.

The mochine oa pampiri sanding ho nkoa e "pampiri khalase" hobane sebediswa bakeng sa ho etsa thepa lona likaroloana motsotso khalase.

Ka 1834, e American moenjiniere A. Fischer Jr. pele patented tlhahiso ea moralla lesela, khorofo lijo-thollo tseo e bile Karbid Kremniya le ea alumina.

O lokela ho tseba hore lijo-thollo sandpaper le na le e 'ngoe ea litšobotsi tse la ntlha la oona.

Conventionally, pampiri arotsoe ka lihlopha: mahoashe, mahareng le pampiri e metle ea lijo-thollo.

Ea lijo-thollo boholo rerang mofuta oa mosebetsi oo ke sandpaper. Bo bitsa tla boela a mo thuse ho khetha.

Moralla phethile mosebetsi oa ho kalafo omeletseng le metsi tsa bokaholimo ba mefuta eohle putty.

Bakeng sa e fapaneng mefuta e sa mosebetsi oa sebelisoa ho khetholla pakeng tsa lijo-thollo le ka lebaka la sandpaper. Tšoaea ka pampiri ho khetheha.

Grit sandpaper

N - bo bitsa ea lihlahisoa tse ruuoang (khale).

P - bo bitsa ea lihlahisoa imported le bo bitsa mocha oa lihlahisoa tse ruuoang.

Manufacturers tse hlahisang thepa bakeng sa diyantle bakeng, sebelisa e le 'ngoe lefatšeng ka bophara tekanyetso kgetho ya boholo lijo-thollo.

Ka ba bang ba maemong a Soviet oele sandpaper, tšoaea qeta sehlahiswa ho hlahisoeng moralla ba atlehe ho latela GOST (khale).

Ntho e tšoanang etsahalang Canada, China, ea US le Japane, moo 'maraka e ruuoang o thabela disymbol lona.

European Standard (GOST e ncha) e fana ka maikutlo e leng keketseho ea melao ea boitšoaro le fokotseha boholo lijo-thollo. fapaneng linaheng tsena ka ho feletseng e tšoailoe ka sandpaper.

Tekanyetso, e ka mohlala, tse reretsoeng e le hore melao ea boitšoaro ea ba, ho fapana le hoo, decreases le fokotseha boholo lijo-thollo.

tšoane hona e ke ke ea hlokomolohuoa ha ho reka lihlahisoa tsa tlhaho li khorofo naheng ea Soviet Union ea mehleng, e le phapang ena ba ka 'na fella ka bokella thepa e fosahetseng.

Re lokela ho hlokomela hore pampiri imported e hangata ka ho fetisisa a rekisa ka lihlahisoa, le malapeng - ka le meqolong e, le rekiswang mitha lona.

Ha pampiri e sebelisoa bophelong ba letsatsi le letsatsi, ho ke ke ha hlokahala hore ho hopola tšoauoa. Ho ke ke ho hlokahala feela hore le tsebe hore bo bitsa khale o na le lengolo la H mora palo, 'me e ncha le lengolo P pele palo.

Ka lehlakoreng le khutlisetsang sa pampiri, ho na le litlotla tse ling. Ba ile ba ka fumana boitsebiso bo eketsehileng mabapi le sandpaper ho: e thehiloeng Bibeleng, theknoloji ea tlhahiso, sa mofuta oa khorofo lijo-thollo tse bonahalang, mofuta oa sekhomaretsi, joalo-joalo ...

Hona joale hore u tseba seo ha e sandpaper. Tšoaea? Le eona, o Hape, ho utlwisiswa. Ho ntse ho lakatsa monate le e behang mosebetsi oohle.