Cov ntsiab lus ntawm silicon ntawm cov hlau yog txiav txim siab los ntawm kev ntsuam xyuas los ntawm lub Hoobkas. Silicon tsis yog ib qho txiaj ntsig los ntawm cov cua sov ntawm cov hlau, tab sis yog ib hom kev faib tawm los ntawm cov cua sov. Nws tsis paub tias qhov kev faib tawm no muaj dab tsi, tab sis peb yuav sim ua qhov kwv yees nrog qee tus lej. Cia peb hais tias cov hlau muaj ib daim ntawv ntsuam xyuas zeb nrog tus nqi silicon ntawm 0.04 feem pua . Tus nqi no nyob qhov twg hauv kev faib cov nqi silicon thoob plaws hauv cov hlau? Puas yog qhov siab tshaj plaws, qhov tsawg kawg nkaus, qhov nruab nrab, qhov nruab nrab, lossis qee qhov kev ua haujlwm ntawm kev faib khoom? Lo lus teb tsis yog. Tus nqi silicon tsuas yog ib qho taw qhia ntawm kev faib nkhaus ntawm tag nrho cov nqi silicon hauv tshav kub. Txij li nws tsis tuaj yeem hais kom meej tias daim ntawv qhia txog zeb no txhais tau li cas, qhov kev xav tuag tau ua kom tus nqi silicon nyob ib puag ncig ntawm nruab nrab ntawm kev faib khoom. Qhov no yog ib qho zoo kom txog rau thaum koj cov khoom tawm los nrog cov tuab, grey txheej thiab koj cov neeg siv khoom tsis zoo siab heev.
Yog li dab tsi tshwm sim rau peb galvanized txheej thiab yog vim li cas yog ib feem yog li ntawd thickly coated? Cov lus teb yog nyob rau hauv qhov nkhaus Sandelin (daim duab 1).
Ua tib zoo saib tshwj xeeb rau txoj kab nqes ntawm txoj kab nkhaus ncig ntawm {{0}}, 05 feem pua silicon cov ntsiab lus. Txoj kev nqes hav yog ntxhab heev, uas txhais tau hais tias kev hloov me me ntawm cov ntsiab lus silicon yuav ua rau muaj kev hloov loj hauv txheej txheej. Yog li yog tias koj muaj ib feem ntawm qhov kev xeem lamination daim ntawv qhia muab tus nqi ntawm 0, 04 feem pua silicon thiab tus nqi silicon no nyob rau hauv nruab nrab ntawm silicon tshav kub faib ntawm cov hlau los yog nyob rau sab siab. ntawm kev faib tawm, cov txheej txheej galvanized yuav tawm los ci thiab luminous thiab tsuas yog ntawm cov txheej txheem txheej thickness. Ntawm qhov tod tes, yog tias 0.04 feem pua tau tshaj tawm hauv daim ntawv tshaj tawm kev xeem dov yog nyob rau sab qis ntawm qhov kev faib tawm, qee qhov ntawm cov cua sov no los ntawm cov hlau yuav muaj cov nqi silicon ntau dua thiab ua rau cov txheej txheem galvanized uas tuaj yeem ua kom tuab dua. thiab txawm npub grey nyob rau hauv tsos. Qhov sib txawv me me ntawm tus nqi silicon ntawm 0.04 feem pua thiab 0.06 feem pua tuaj yeem ua rau muaj qhov sib txawv loj hauv cov tuab thiab cov tsos ntawm cov txheej galvanized. Ob lub micrographs hauv qab no (Daim duab 2 thiab 3) qhia qhov sib txawv ntawm cov qauv ntawm cov txheej txheem uas tsuas yog hloov me me ntawm cov ntsiab lus silicon. Thawj micrograph muaj cov qauv ntawm peb txheej intermetallic thiab ib txheej zinc dawb li txheej txheej. Qhov thib ob micrograph muaj me me gamma thiab delta txheej thiab ib txheej zeta loj heev uas tsis muaj zinc txheej dawb, yog li nws yuav tshwm dull grey.
Pom zoo txwv (hauv qab {{0}},04 feem pua lossis nruab nrab ntawm 0.15 feem pua thiab 0.22 feem pua) rau cov ntsiab lus silicon yog teev nyob rau hauv ASTM A385 . Txawm li cas los xij, yuav muaj qee lub sij hawm thaum cov qib silicon nyob rau hauv cov kev txwv no thiab tsis tau lub txheej muaj ib tug dull grey tsos thiab ib tug tuab galvanized txheej. Ib txoj hauv kev los txo qhov kev pheej hmoo ntawm qhov tshwm sim no yog siv cov tshuaj boiler uas muaj cov nickel.
Nickel nyob rau hauv zinc da dej txo cov nyhuv ntawm silicon cov ntsiab lus rau tag nrho cov nqi silicon tsawg dua 0, kwv yees li 20 feem pua thiab pab tswj cov txheej thicknesses tsawg thiab ib tug kaj, luminous tsos. Qhov tsis zoo ntawm kev siv npib tsib xee yog tias cov txheej tuab yuav raug txo qis rau cov ntsiab lus silicon tsawg heev, mus rau qhov chaw uas cov txheej thicknesses ntawm qee cov khoom yuav tsis ua tau raws li qhov tsawg kawg nkaus ntawm ASTM A123. Qhov no tuaj yeem tshwm sim hauv qee cov khoom siv tubular thiab cov ntaub ntawv nyias nyias. Ib qho kev daws teeb meem rau qhov teeb meem no yog sandblast uas tsis tshua muaj silicon hlau kom cov txheej txheej txheej txheej ntawm rougher nto muab cov txheej tuab uas ua tau raws li qhov tshwj xeeb yam tsawg kawg nkaus.
Yog li ntawd, yog tias koj yuav tsum qhia koj cov neeg siv khoom tias cov hlau koj yuav nrog cov ntsiab lus zoo tshaj plaws silicon yuav tsis zoo tag nrho, tsis txhob hnov qab lo nrog qhov tseeb tias lub neej ntawm galvanized txheej yog ncaj qha proportional rau lub thickness. txheej, thiab tag nrho cov galvanized txheej yuav dull grey nyob rau hauv ib xyoos raws li cov zinc patina ua rau ntawm qhov chaw. Qhov no yuav tsis ua rau koj mob siab, tab sis nws ua rau koj muaj nyiaj hauv ob sab phlu.
