Tam sim no ntau cov khoom tsim khoom lag luam yuav siv cov khoom siv stainless hlau xaim hlua rau kev tsim khoom, txhawm rau txhawm rau txheeb xyuas cov hlau tsis zoo, qee yam kev ntsuas thiab cov txheej txheem tuaj yeem coj mus.Txawm li cas los xij, ntau tus neeg siv khoom tsis paub tias yuav siv txoj kev twg los txheeb xyuas.Hom kev txheeb xyuas hauv qab no tau teev tseg los ntawmGepair tensile mesh.
1, Magnetic test method
Magnetic test method yog qhov tseem ceeb tshaj plaws thiab feem ntau qhov sib txawv ntawm austenitic stainless hlau thiab ferritic stainless hlau yog txoj kev yooj yim tshaj plaws, austenitic stainless hlau tsis yog hlau nplaum, tab sis tom qab lub siab txias ua haujlwm loj yuav muaj cov hlau nplaum me me; Thiab cov ntshiab chromium hlau thiab cov hlau tsis tshua muaj hlau. steel yog cov hlau nplaum muaj zog.
2. Nitric acid point test
Ib qho tshwj xeeb ntawm stainless hlau hlau hlua yog nws qhov kev tiv thaiv corrosion rau cov concentrated thiab dilute nitric acid, uas ua rau nws yooj yim distinguishable los ntawm feem ntau lwm yam hlau los yog alloys.Txawm li cas los xij, high carbon 420 thiab 440 steels yog me ntsis corroded nyob rau hauv nitric acid point test, thiab non-ferrous hlau yog corroded tam sim ntawd nyob rau hauv concentrated nitric acid, thaum dilute nitric acid muaj zog corrosive nyhuv ntawm carbon hlau.
3, Copper sulfate point test
Copper sulfate taw tes sim kom ceev kom paub qhov txawv ntawm cov pa roj carbon zoo tib yam thiab txoj kev yooj yim tshaj plaws ntawm txhua hom stainless hlau hlau hlua, kev siv cov concentration ntawm kev daws ntawm tooj liab sulfate yog 5% - 10%, ua ntej ntsuas qhov ntsuas, thaj chaw kuaj. yuav tsum tau kom huv si tshem tawm cov roj thiab lwm yam impurities, daim ntaub los yog mos sib tsoo polishing thiab sib tsoo tshuab cheeb tsam me me, thiab ces sim cov tee rau burnish, zoo tib yam carbon steel los yog hlau yuav tsim nyob rau hauv ob peb vib nas this ib txheej ntawm nto hlau tooj liab, thiab nto ntawm lub point test stainless hlau tsis tsim tooj liab los nag lossis pom tooj liab xim.
4, Sulfuric acid xeem txoj kev
Sulfuric acid immersion ntawm stainless hlau tuaj yeem paub qhov txawv ntawm 302 thiab 304 los ntawm 316 thiab 317.Qhov txiav ntug ntawm cov qauv yuav tsum yog cov av zoo, thiab tom qab ntawd ntxuav thiab passivated nyob rau hauv sulfuric acid nrog lub ntim concentration ntawm 20% ~ 30% thiab kub ntawm 60. ~ 66 ℃ rau ib nrab ib teev.Thaum lub ntim concentration ntawm sulfuric acid tov yog 10% thiab rhuab mus rau 71 ℃, 302 thiab 304 yog immersed nyob rau hauv cov tshuaj, cov hlau yog sai corroded thiab ua ib tug loj tus naj npawb ntawm npuas, thiab cov qauv yuav dub nyob rau hauv ob peb feeb. 316 thiab 317 steel qauv tsis corroded los yog corroded heev maj mam (tsis muaj npuas), qhov kev ntsuam xyuas nyob rau hauv 10 ~ 15 feeb tsis hloov xim.Qhov kev ntsuam xyuas yuav ua tau ntau dua yog tias cov qauv uas paub muaj pes tsawg leeg yog siv rau kwv yees sib piv.
Post lub sij hawm: Mar-08-2022
