Sandpaper: olemba ndi ntchito

Mu kulankhula sandpaper nthawi zambiri amatchedwa "sandpaper" kapena "khungu."

Amakhala ndi pepala kapena nsalu m'munsi TACHIMATA ndi wosanjikiza zakuthupi abrasive.

Pa kupanga kugwirizana ndi processing wa matabwa, pulasitiki, zitsulo, galasi simungakhoze kuchita popanda nazhdachki. Ndi chofunika mukamafinya utoto akale, palibe njira ngati mukufuna kukonza pamwamba pa phunziroli ndi utoto, etc.

The Chinese wakale m'zaka 13 mothandizidwa ndi zomatira yochokera wowuma munakhala pa mbewu zikopa mbewu, mchenga finely kuuluka ndi zipolopolo.

The zinachitika mu pepala sanding amakuona ngati "pepala galasi" chifukwa ntchito opanga wake particles mphindi galasi.

Mu 1834, ndi American injiniya A. Fischer Jr. woyamba setifiketi yopanga emery nsalu, abrasive tirigu wakhala Karbid Kremniya ndi aluminiyamu.

Muyenera kudziwa kuti mbewu sandpaper ndi mmodzi wa makhalidwe waukulu.

Conventionally, pepala m'magulu: coarse, sing'anga ndi pepala chabwino tirigu.

Mapira kukula amasankha ntchitoyi chifukwa ndilo sandpaper. Olemba kumathandizanso wake wosankha.

Emery ankagwira ntchito mankhwala ouma ndi yonyowa wa pamalo a mitundu yonse putty.

Pakuti osiyana mitundu ya ntchito ntchito kusiyanitsa tirigu ndi maziko a sandpaper. Kuchonga pa pepala makamaka.

grit sandpaper

N - olemba katundu zoweta (yakale).

P - olemba katundu kunja ndi olemba latsopano mankhwala zoweta.

Opanga yotulutsa katundu katundu, ntchito limodzi lonse muyezo zoti kukula tirigu.

Mu ena limati ya Union anakomoka sandpaper, chodetsa cha chotsirizidwa kupanga emery akutsatiridwa malinga GOST (yakale).

Chinthu chomwecho chikuchitika mu Canada, China, ndi US ndi Japan, komwe msika zoweta amakonda zizindikiro zake.

European Standard (GOST yatsopano) zikutanthauza ponso mfundo kucheperachepera kukula tirigu. osiyana m'mayikowa kwathunthu ikusonyezedwa ndi sandpaper.

Standard Mwachitsanzo, cholinga kotero kuti makhalidwe ndi M'malo mwake, amachepetsa ndi kucheperachepera kukula tirigu.

kusiyana sitingakane pamene kugula katundu abrasive m'dera la Soviet Union, monga kusiyana zingatipangitse kupeza katundu cholakwika.

Tikumbukenso kuti pepala kunja nthawi zambiri chogulitsidwa mankhwala, ndi zoweta - mu masikono, ndipo anagulitsidwa mita ake.

Ngati pepala ntchito tsiku ndi tsiku, si koyenera kuti ndikukumbukira chizindikiro. Ndikofunikira kudziwa kuti olemba akale ali ndi kalata H pambuyo nambala ndi watsopano ndi kalata P pamaso chiwerengero.

Kumbali n'zosiyana pepala, pali mayina ena. Iwo angathe kupezako chidziwitso owonjezera za sandpaper ndi: akuchokera, njira ya ulimi, mtundu wa abrasive mbewu chuma, mtundu wa zomatira, etc ...

Tsopano inu mukudziwa chomwe sandpaper. Chodetsa? Ndi kuti, inunso anamvetsa. Mpaka mukufuna osangalatsa ndi wopindulitsa ntchito zonse.