1. Thaum Siv Sandblasting rau Weathering Steel
Tshem tawm xoob pib xeb / zeb nplai: Kub-rolled weathering steel daim hlau feem ntau muaj ib txheej ntawm xoob zeb nplai (hlau oxide) ntawm qhov chaw, uas tuaj yeem tev tawm thiab cuam tshuam kev tsim patina. Sandblasting strips txheej no tag nrho.
Kho qhov tsis sib xws patina: Yog hais tias lub ntuj patina muaj qhov tsaus nti, qhov chaw flaking, los yog cov kab mob (xws li, muaj plua plav, roj residues), sandblasting tuaj yeem du nto los npaj rau patina acceleration.
Ua ntej-welding/pre{1}}kev npaj ua ntej: Rau daim hlau uas xav tau vuam lossis laser txiav, sandblasting tshem tawm xeb los ntawm qhov sib koom ua ke kom tshem tawm cov vuam tsis xws li porosity lossis tsis tiav fusion.
2. Qhov zoo ntawm Sandblasting rau Weathering Steel
Kev tu kom huv: Sandblasting siv siab -siab abrasive hais (xws li, aluminium oxide, silica xuab zeb) kom tshem tawm xeb thiab nplai yam tsis muaj tshuaj lom neeg seem (tsis zoo li acid tu).
Kev ua kom nto: Cov txheej txheem tsim ib qho me ntsis ntxhib, zoo li ntxhib ntxhib ntxhib ntxhib ntxhib los mos, uas txhawb kev nrawm dua thiab ntau dua txawm tias tsim cov txheej txheem tiv thaiv patina.
Tsis yog - puas tsuaj rau substrate: Thaum tswj tau zoo, sandblasting tsuas yog tshem tawm cov oxide txheej thiab tsis ua kom puas cov hlau hauv qab.
3. Kev txiav txim siab tseem ceeb kom tsis txhob muaj kev puas tsuaj
Xaiv txoj cai abrasive: Sivmos abrasiveszoo li txhuas oxide los yog iav hlaws dai es tsis txhob tawv silica xuab zeb (uas yuav ua rau ntau qhov chaw pitting). Rau cov ntawv siv kho kom zoo nkauj, zoo -cov khoom abrasives (80–120 mesh) ua kom lub ntsej muag du.
Tswj siab thiab nyob deb: Tswj lub siab blasting ntawm0.3-0.5 MPathiab lub nozzle - mus rau - phaj nrug ntawm15-30 cm. Kev kub siab lossis ze ze tuaj yeem tsim cov pits sib sib zog nqus uas cuam tshuam cov dej noo thiab ua kom lub zog hauv cheeb tsam corrosion.
Tiv thaiv patina paub tab (yog tias tsim nyog): Sandblasting yuav tshem tawm tag nrho cov tuab, cov txheej txheem patina (uas yog ib feem ntawm cov hlau tiv thaiv corrosion). Tsis txhob sandblasting daim hlau uas twb muaj lawm - tsim cov patina tshwj tsis yog tias koj npaj siab rov tsim kho patina los ntawm kos.
Tshaj tawm - kev kho mob blasting: Tom qab sandblasting, steel nto yog heev reactive thiab nquag mus rusting. Ua cov kauj ruam no tam sim ntawd:
Tshuab tawm cov khoom seem uas seem nrog qhuav, roj- cua compressed dawb.
Siv lub patina accelerator nyob rau hauv4-8 teevpib tswj oxidation thiab tsim ib qho tshiab tiv thaiv patina.
Rau kev tiv thaiv ib ntus, siv cov txheej nyias nyias ntawm cov roj tsis muaj zog tiv thaiv corrosion (VCI) yog tias ncua sij hawm patina acceleration.
4. Lwm txoj kev rau Sandblasting
Hlau txhuam: Rau nyias, xoob xeb (tsawg dua los yog sib npaug li 0.05 hli tuab).
Sib tsoo: Rau thaj chaw xeb los yog tuab nplai ntawm cov pob qij txha.
