Thaum xim av xeb pom tshwm ntawm cov xim tsis muaj hlau, cov neeg xav tsis thoob: "Cov hlau tsis xeb yuav tsis xeb, xeb tsis yog hlau tsis ruaj, nws yuav ua tau hlau." Qhov tseeb, qhov no yog ib hom kev tshawb fawb ntawm ib qho tsis muaj kev nkag siab ntawm kev tsis nkag siab ntawm cov hlau tsis huv. Stainless hlau kuj rusts nyob rau hauv tej yam kev mob.
Stainless hlau muaj peev xwm tiv thaiv atmospheric oxidation, uas yog tsis corrosive, tab sis kuj muaj lub peev xwm ntawm corrosion tsis kam nyob rau hauv nruab nrab uas muaj acid, alkali thiab ntsev. Tab sis nws txoj kev txhim kho corrosion yog hloov los ntawm nws cov tshuaj lom neeg muaj pes tsawg leeg, kev sib nraus xeev, siv tus mob thiab ib puag ncig tawm hom. Cov khoom 304, nyob rau hauv qhuav, huv cheeb tsam, muaj qhov zoo tshaj plaws tiv thaiv kev kub ntxhov, tab sis tsiv mus rau ntawm ntug dej hiav txwv, qhov chaw uas nws yuav sai xeb hauv hiav txwv huab uas muaj ntau ntsev. Yog li ntawd, tsis yog txhua hom stainless hlau, txhua lub sij hawm tuaj yeem tiv thaiv kev khaus, tsis xeb.
Stainless hlau yog tsim nyob rau ntawm ib txheej ntawm ib tug heev nyias thiab nplua nplua nuj nplua nuj chromium oxide zaj duab xis (tiv thaiv zaj duab xis), tiv thaiv cov pa mus rau infiltration, ntxiv oxidation, nc micro ntawv tus naj npawb txiv neej cncdar thiab muaj peev xwm tiv tawv corrosion. Ib qho tiamsis muaj qee zaum, hom yeeb yaj kiab no tsis tu ncua, huab cua los yog kua thiab cov pa oxygen yuav tas li infiltration lossis nws yog hlau hlau atom sib cais tawm, tsis muaj cov kab xoob hlau oxide, hlau nto xeb los ntawm tas li. Qhov no zoo li zaj duab xis saum npoo yog puas ntau hom, ntau yam uas pom nyob rau hauv txhua txhua hnub:
1. Cov hlau tsis zoo ntawm lub tsheb tua hluav taws muaj peev xwm muaj hmoov av ntawm lwm cov ntsiab hlau los yog txuas ntawm lwm yam khoom siv hlau, uas ntub.
Nyob rau hauv cov huab cua, lub condensate ntawm txuas thiab stainless hlau mus ob leeg ua ke rau hauv ib lub xovtooj ntawm micro, ua rau muaj cov tshuaj tiv thaiv electrochemical.
Yuav tsum, cov yeeb yaj kiab yog puas, hu rau nws cov hluav taws xob hluav taws xob.
2. Cov hlau tsis zoo ntawm lub tsheb tua hluav taws yog adhered rau cov kua txiv hmab txiv ntoo (xws li kav dej, noodle kua zaub, thiab lwm yam), uas yog tsim los ntawm dej thiab oxygen.
Organic acid, ntev lub sij hawm tsim cov organic acids rau hlau qhov hlau corrosion.
3. Lub qhov hlau tsis zoo ntawm lub tsheb tua hluav taws tuaj yeem tshwm sim los ntawm qhov adhesion ntawm cov kua qaub, alkali thiab ntsev tshuaj (xws li cov dej alkaline thiab kua tshuaj tsuag dej).
Kev txhim kho hauv zos.
4. Nyob rau hauv cov huab cua uas muaj kuab (uas muaj ntau npaum sulphide, oxide, hydrogen oxide cua), thaum dej tau yeem,
Tsim tawm ntawm sulfuric acid, nitric acid, acetic acid, ua tshuaj lom neeg tshuaj.
Cov xwm txheej saum toj no tuaj yeem ua rau kev puas tsuaj thiab kev txhuam ntawm cov hlau tsis muaj hau hlau tiv thaiv uas siv rau hauv lub tsheb tua hluav taws. Yog li ntawd, kom paub meej tias qhov hlau ntsa yog ci ntsa iab thiab tsis xeb, peb pom zoo:
Nws yog ib qho tsim nyog los tu thiab txhuam cov stainless hlau nto nquag, tshem tawm cov txuas, thiab tshem tawm cov khoom sab nraud ua rau xeb.
Muaj ib hom stainless hlau nrog 201 thiab 202 cov ntaub ntawv nyob rau hauv kev ua lag luam, uas yog ib qho yooj yim rau xeb hauv cov chaw ntug hiav txwv, tsim rau siv tsis muaj chaw muaj kuab paug thiab pa hluav taws xob.
Puam chaw yog tsim los ntawm 304 xim hlau, thiab 304 tuaj yeem tiv thaiv seev rau qhov dej.
