Lub caij nplooj hlav thiab lub caij ntuj sov caij, sai tom qab cov nag ntxuav lub tsheb, quav, cov pos hniav yog xim tus yeeb ncuab loj tshaj. Tsheb kev zoo nkauj cuag lub tswv yim, kev xav tau tshwj xeeb xim rau acid nag rau thaum lub caij los nag, quav noog, hmoov ntawm cov pos hniav thiab cov hlau cov tsheb "tawv nqaij" killer "corrosion cov xim muaj hlau.
1, tus tseem hloov maj mam---acid nag
Acid nag los nag acid thaj tsam hauv Beijing, muaj lub npe ntawm lub zos "blacklist". Nyob rau lub yim hli ntuj xyoo 2006, 80% rains hauv Beijing yog "acid nag". Acid nag no muaj nqis PH qab 5.6 nag lossis daus, hnov mob nrog rau xim, nyhuv hniav thiab txo cov xim muaj hlau thaiv, xim pluas twb them uas muaj cov pob me me.
2, cov feem disturbing---noog quav
Ntau tshaj li zoo nkauj, yog tias tsuas niaj lwm hnub txog tus noog quav rau xim, xim yuav tau corroded los acidic guano zoo heev rau hauv ib qhov. Phooj ywg ntawm tus txheej yuav txo qhov quav noog, maj mam muab so noog quav yuav raug tshem tawm, yuav tsis tua cov xim muaj hlau.
3, cov khoom feem neeg---hlau hmoov
Ua pa nrog ib tug loj pom hlau plua plav. Thaum lub tsheb loj yuav tsiv, hlau nyob ib puag ncig inertia ncaj qha mus rau hauv cov xim muaj hlau nto; thiab thaum twg hlau oxide, tus ceev corrosion ntawm taug txhuas xim ntawm lub sab hauv kom paub, yog koj nres tau real.
4, yooj yim tshaj overlooked---cov pos hniav
Ua zoo dev tom tsheb nres nyob ua kev hem thawj ntoo ntawm cov pos hniav. Cov pos hniav li tus tswv tsev pob tshab tsis muaj kob, lwj liam tsheb huam mus thoob. Khov ntawm cov pos hniav yuav ua rau cov xim muaj hlau qho to, uas kuj tseem ua kab nrib pleb.