Pob zeb xeb txheej txheem tshem tawm

Qhov xeb yog dab tsi? Xeb yog thaum cov khoom muaj hlau nkag mus rau sab hauv ntawm lub pob zeb lossis cov hlau sib txuas hauv lub pob zeb hnov ​​​​mob nrog cov tshuaj lom neeg hauv ib puag ncig los tsim cov xim daj lossis xim daj xim rau ntawm lub pob zeb. Chemically piav qhia: nws yog ua los ntawm hlau reacting nrog oxygen nyob rau hauv cov huab cua noo. Cov tshuaj tiv thaiv no yuav tsum muaj peb yam, xws li Fe (hlau), O2 (oxygen), H2O (dej).

Yog vim li cas rau kev tsim ntawm pob zeb xeb daj:

Ua ntej, thawj qhov chaw xeb. Cov tshuaj lom neeg muaj pes tsawg leeg ntawm pob zeb muaj qee cov ntsiab lus ntawm cov hlau oxide, xws li xov tooj daj, nyiaj xov beige, Shaanna beige, dawb hemp thiab lwm yam. Cov hlau uas muaj cov khoom no tau yooj yim oxidized los ua xeb thaum lawv nkag mus rau hauv huab cua hauv qhov chaw ntub dej. Nrog cov dej ntws thiab ntws tawm hauv cov micropores ntawm pob zeb, chloasma tsis tu ncua yuav tshwm sim rau saum npoo ntawm pob zeb.

Qhov thib ob yog theem nrab xeb me ntsis. Nyob rau hauv cov txheej txheem ntawm cov mining, ua, tsheb thauj mus los, paving, thiab siv cov pob zeb, xeb yog ncaj qha mus rau hauv, los yog hlau tseem nyob rau saum npoo ntawm pob zeb, uas oxidizes thiab diffuses nyob rau lub sij hawm, ua rau xeb thiab daj me ntsis. Nyob rau hauv cov cheeb tsam uas muaj kua qaub hnyav, cov kua qaub los nag yuav tsis tu ncua cov hlau uas muaj cov khoom nyob ib ncig ntawm lub pob zeb (xws li cov pendants qhuav, scaffolding, thiab lwm yam), thiab hloov cov xeb mus rau lub pob zeb nto.

Qhov thib peb yog dissolving xeb chaw. Nyob rau hauv tus txheej txheem ntawm kev siv thiab txij nkawm, lub pob zeb yog qias neeg los ntawm cov kua qaub uas muaj zog (xws li hydrochloric acid, sulfuric acid, nitric acid, thiab lwm yam) los yog ntxuav nrog cov kua qaub muaj zog. Cov kua qaub muaj zog yuav yaj cov hlau nyob ib ncig ntawm lub pob zeb thiab tsim cov tshuaj muaj hlau. Cov kev daws teeb meem no yuav nkag mus thiab nyob hauv lub pob zeb, thiab nrog rau kev ua ntawm cov tshuaj alkaline thiab txo cov acidity, cov ntsiab lus hlau yuav tig mus ua xeb.

Txhawm rau txiav txim siab hom kab xeb:

Thawj hom kab xeb yog qhov xeb ntawm lub pob zeb nws tus kheej, uas yog qhov nyuaj rau kev ua kom huv si. Vim hais tias txhawm rau tiv thaiv xeb, nws yog ib qho tsim nyog yuav tsum tau hnov ​​​​cov hlau no, thiab cov hlau uas muaj nyob hauv lub pob zeb yog qhov nyuaj kom tshem tawm tag nrho.

Qhov thib ob thiab thib peb xeb me ntsis yog qhov yooj yim los daws. Cov txheej txheem kev kho tshwj xeeb ntawm cov pob zeb xeb yog: txiav thiab thaiv - nqa kev tiv thaiv - sau cov tshuaj zoo - tshuaj tshem tawm hmo ntuj - kev kho tshuaj tiv thaiv oxidation - kev tiv thaiv kev kho mob.

1. Txiav thaiv. Thaiv qhov kev txhawb siab rau cov kab xeb uas txuas ntxiv ua rau ntawm lub pob zeb, xws li hlau thiab dej, kom cov pob zeb xeb yuav tsis txuas ntxiv mus.

2. Tso cov kev tiv thaiv. Yog tias lub pob zeb tau raug tiv thaiv, thawj qhov kev tiv thaiv ntawm lub pob zeb yuav tsum raug tshem tawm ua ntej, txwv tsis pub tus neeg saib xyuas xeb tuaj yeem nkag mus rau hauv pob zeb thiab ua lub luag haujlwm sib xws. Solvent-based (roj-raws li) tiv thaiv tus neeg sawv cev tuaj yeem raug tshem tawm nrog degreasing ointment thiab DEC21; dej-raws li (dej-raws li) tiv thaiv tus neeg sawv cev tuaj yeem raug tshem tawm nrog DEC21.

3. Sau cov tshuaj kom raug. Siv cov khoom siv marble (marble) xeb tshem tawm kom tshem tawm xeb, xws li marble xeb tshem tawm, granite xeb tshem tawm, MAR, TSIS MUAJ RUG, thiab lwm yam.