Cov nqaj yog cov hlau oxide uas tsim rau ntawm cov nplaim kub steel. Cov nplai qhov ntsuas yog xiav-dub. Ua ntej pleev xim cov khoom lag luam steel, cov nplai yuav tsum tau muab tshem tawm, vim tias daim ntawv thov xim pleev xim rau cov nplai yog qhov nyuaj vim qhov tsawg kawg nkaus adhesion thiab siab brittleness ntawm cov nplai. Hauv lwm lo lus, cov xim yuav tsis lo zoo, thiab cov dross yuav poob thaum lub sijhawm, thiab staining tsis xws luag yuav tshwm sim. Cov nqaj hlau tuaj yeem tshem tawm los ntawm cov nplaim hluav taws, txhawm rau qhwv lossis xuab zeb.
Cov Lus Qhia
Kauj ruam 1
Rau kev kho cov nplaim hluav taws xob cov hlau nyob rau hauv thiaj li yuav tshem tawm nplai, lub tshuab pa roj vuam yog haum. Ua li no, ua kom sov sai ntawm txheej txheej ntawm cov hlau nrog cov pa oxygen-acetylene nplaim taws. Hauv qhov no, lub nplai yuav pib tawg thiab nws yuav tsum tau muab tshem tawm nrog lub hlau txhuam tom qab hlau tau txias. Yog tias tsim nyog, kev ua haujlwm yuav rov ua tau ob peb zaug. Nco ntsoov kom txias cov hlau thiab ntxuav nws nrog txhuam ntawm txhua qhov rov ua dua ntawm cov txheej txheem.
Kauj ruam 2
Etching ntawm nplaim ntawm cov hlau kom tshem tawm cov oxides thiab teev yog nqa tawm siv sulfuric lossis hydrochloric acid. Ua cov txheej txheem no, muab sib xyaw rau ib qho hauv 16-20% kev daws ntawm ib qho ntawm cov kua qaub rau 40 feeb. Tom qab ntawd neutralize acid nrog txiv qaub, yaug thiab qhuav ib feem. Qhov tshwm sim yog descaling los ntawm txawm tias qhov chaw nyuaj tshaj plaws-mus txog qhov chaw. Hlau pickling tuaj yeem ua ke nrog cov xuab zeb me me ntawm qhov chaw tsis muaj qhov tsis xws.
Kauj ruam 3
Sandblasting saum npoo kom tshem tawm nplai yuav tsum tau siv lub thawv xuab zeb. Nov yog txoj hauv kev los tshem tawm cov nplai uas ua los ntawm cov hlau tshiab. Txoj kev no sib txawv ntawm etching thiab kho nplaim taws hauv cov khoom lag luam siab thiab tus nqi qis.
Kauj ruam 4
Qib ntawm descaling. Raws li GOST, muaj plaub qib ntawm descaling ntawm ib qho hlau saum npoo. Qhov roughest yog qhov yooj yim tshem tawm ntawm flaking nplai. Nrog qib thib ob ntawm kev ntxuav, nplai tso cai rau ntawm thaj tsam txog 5%, pom kom pom lub ntsej muag liab qab. Qeb peb qib tiv thaiv qhov kuaj pom ntawm dross pom rau lub qhov muag liab qab. Qhov thib plaub tiv thaiv qhov kuaj tau ntawm dross thaum pom nrog 6x magnification.
Kauj ruam 5
Descaling mus txog rau qhov thib peb tuaj yeem ua tau manually. Txhawm rau ua qhov no, siv tus pas hlau txhuam lossis cov cuab yeej hluav taws xob (grinder los yog grinder).
