Kev ntsuam xyuas thiab muab qhab nia ntawm Tsis yog -Metallic Inclusions in Steel
Aug 08, 2026
Kev ntsuam xyuas thiab muab qhab nia ntawm Tsis yog -Metallic Inclusions in Steel
Tsis yog -cov khoom siv hlau yog cov khoom siv sib txawv uas tsis tuaj yeem zam tau thaum lub sij hawm steel smelting, deoxidation thiab solidification txheej txheem, suav nrog oxides, sulfides, silicates thiab cov khoom sib xyaw. Txawm hais tias cov ntsiab lus tsis tshua muaj, lawv cuam tshuam rau isotropy, toughness, qaug zog tsis kam, hnav tsis kam thiab vuam kev ua tau zoo ntawm cov ntaub ntawv hlau. Ntau dhau los yog loj dua uas tsis yog-cov khoom siv hlau yuav ua rau muaj kev ntxhov siab, txo cov txheej txheem txuas ntxiv, thiab yooj yim ua rau cov kab nrib pleb thiab qaug zog tsis ua haujlwm thaum ua haujlwm thiab kev pabcuam. Yog li ntawd, kev soj ntsuam xyuas qhov tseeb thiab cov qauv ntsuas ntawm cov khoom tsis yog -cov khoom siv hlau yog cov khoom tseem ceeb rau kev ntsuam xyuas steel zoo, kev lees txais cov khoom siv thiab siab - qauv engineering cov ntaub ntawv pov thawj.
1. Kev faib tawm ntawm Tsis yog-Hloov suav nrog hauv Hlau
Raws li cov qauv kev soj ntsuam thoob ntiaj teb thiab hauv tsev steel, cov khoom tsis yog{0}}cov khoom siv hlau yog feem ntau muab faib ua plaub pawg loj, uas tau muab cais thiab ntsuas sib cais hauv qhov ntsuas ntsuas qhov tseeb:
Hom A (Sulfide suav nrog)
Feem ntau manganese sulfide thiab lwm yam sulfide composite theem, qhia grey sawb los yog elongated faib raws dov kev taw qhia. Sulfide inclusions muaj qee yam plasticity, uas yooj yim tsim cov sawb ntev ntev tom qab dov, txo qhov kev sib hloov toughness thiab ductility ntawm hlau, thiab cuam tshuam rau qhov txias khoov thiab stamping kev ua tau zoo ntawm cov ntaub ntawv.
Hom B (Alumina suav nrog)
Cov tawv tawv oxide suav nrog feem ntau yog tsim los ntawm alumina, tshwm raws li cov saw -zoo li, granular lossis pawg faib. Cov kev suav nrog no yog ib qho nyuaj thiab nkig, tsis tuaj yeem deformed thaum dov, thiab yooj yim los ua qhov chaw ntawm micro- tawg, txo lub neej qaug zog thiab cuam tshuam rau cov hlau.
Hom C (Silicate Inclusions)
Yas silicate composite inclusions, faib nyob rau hauv tsis xwm yeem sawb thiab thaiv cov duab. Silicate inclusions muaj qhov tsis sib xws morphological tis, uas yuav ua rau cov khoom siv hauv zos tsis sib haum ntawm cov hlau thiab cuam tshuam rau kev ua haujlwm ruaj khov ntawm siab -cov khoom steel precision.
Hom D (Globular Oxide Inclusions)
Dispersed spherical los yog ze ntawm -spherical zoo oxide hais, nrog me me particle loj thiab random faib. Txawm hais tias ib qho me me me me, ntau qhov ntau yuav tseem txo qhov compactness thiab structural uniformity ntawm steel matrix.
2. Lub hauv paus ntsiab lus ntawm kev soj ntsuam ntsuas kev suav nrog
Tsis yog-kev ntsuas kev suav nrog hlau txais yuav siv metallographic microscope microscopic tsom xam txoj kev. Tom qab tus qauv qauv, kev sib tsoo thiab polishing ntawm cov qauv steel, qhov chaw saib xyuas, kev txheeb xyuas qhov ntev, ntsuas qhov dav thiab kev suav ntau yog ua raws li tus qauv magnification. Cov qib zoo yog txiav txim siab raws li cov yam ntxwv morphological, qhov ntev tshaj plaws, tag nrho cov kev faib tawm ntev thiab qhov ntom ntom ntawm ntau qhov sib xyaw.
Qhov kev txiav txim muab qhab nia yog nyob ntawm qhov sib piv ntawm qhov ntsuas qhov tseeb thiab cov qauv ntsuas cov kab kos. Cov qib siab dua, qhov hnyav dua qhov suav nrog kev ua qias tuaj, thiab qhov phem dua qhov microstructure purity ntawm hlau.
3. Cov txheej txheem soj ntsuam thiab muab qhab nia
Txhawm rau kom ntseeg tau qhov raug thiab sib xws ntawm kev suav nrog cov qhab nia, peb siv cov txheej txheem kaw- cov txheej txheem ntsuas lub voj voog nruj raws li ISO 4967 thiab ASTM E45 cov qauv thoob ntiaj teb:
Qauv Qauv
Xaiv cov neeg sawv cev ua haujlwm los ntawm batch steel daim hlau, steel kav lossis profiles rau sampling. Cov qauv saum npoo yog perpendicular lossis parallel mus rau dov kev taw qhia raws li tus qauv yuav tsum tau ua kom ntseeg tau tias lub xeev kev faib tawm tuaj yeem cuam tshuam tiag tiag.
Kev npaj ua qauv
Ua tiav kev txiav, inlaying, sib tsoo thiab daim iav polishing kom tsis muaj khawb, corrosion thiab khoom tsis xws luag ntawm metallographic nto, tsis txhob cuam tshuam nrog kev soj ntsuam microscopic.
Microscopic Observation thiab Scanning
Saib xyuas ntau qhov kev pom nyob rau hauv cov qauv kev nthuav dav, hla tag nrho qhov chaw soj ntsuam, sau cov morphology, qhov loj thiab kev faib tawm ntawm A / B / C / D plaub hom kev suav nrog ib qho los ntawm ib qho, thiab khaws cov duab metallographic qub.
Cov ntaub ntawv txheeb cais thiab ntsuas qib
Suav qhov siab tshaj plaws ntawm ib qhov ntev, tag nrho qhov ntev ntawm qhov sib txuas thiab qhov sib faib qhov ntom ntom ntawm txhua hom kev suav nrog, sib piv nrog cov qauv ntsuas ntsuas, txiav txim siab qib kev ua qias tuaj ntawm txhua hom kev suav nrog, thiab tsim cov kev ntsuas purity tag nrho ntawm cov khoom siv hlau.
Kev Tshawb Fawb Txog Kev Tshawb Fawb thiab Tshaj Tawm Tshaj Tawm
Cov ntaub ntawv xeem thiab cov duab raug tshuaj xyuas cov kws tshaj lij, thiab daim ntawv tshaj tawm qhia txog kev ntsuas ntsuas qhov ntsuas tau raug muab los ua kom paub txog kev soj ntsuam zoo.
4. Kev txiav txim siab thoob ntiaj teb muab qhab nia
Peb qhov kev ntsuam xyuas tsis yog -nws yog xim hlau suav nrog ua raws li cov qauv kev lag luam thoob ntiaj teb:
TS EN ISO 4967 Cov- Kev txiav txim siab ntawm cov hlau tsis yog -cov ntsiab lus ntawm cov khoom siv hlau - Micrographic method siv cov qauv duab
ASTM E45- Cov txheej txheem xeem txheej txheem los txiav txim siab cov ntsiab lus ntawm cov hlau
Raws li tus qauv txheej txheem, txhua hom kev suav nrog muab faib ua qib sib txawv. Cov ntsuas ntsuas ntsuas npog nyias series thiab tuab series, uas raws li kev soj ntsuam zoo dispersed inclusions thiab loj -size concentrated inclusions, realizing multi-dimensional raug ntsuam xyuas ntawm steel sab hauv purity.
5. Engineering Impact of Inclusion Grade
Qib ntawm cov tsis yog -metallic inclusions ncaj qha txiav txim siab txog qib ntawm cov ntaub ntawv steel:
Tsawg-qib suav nrog cov pa phemsawv cev rau cov khoom siv purity siab, cov qauv sab hauv, zoo heev toughness, qaug zog thiab kev ua tau zoo, haum rau siab - khoom siv kawg, choj engineering, siab hlab ntsha, marine steel thiab dynamic load structural qhov chaw.
Qib suav nrog ntau dhauyuav ua rau muaj kev cuam tshuam tsis zoo, kev qaug zog tsis zoo, tawg yooj yim thaum khoov thiab stamping, thiab kev ua haujlwm vuam tsis ruaj khov, uas tsis tuaj yeem ua tau raws li siab -tus qauv engineering thiab ntev- kev pabcuam lub neej.
6. Kev Tswj Xyuas Zoo
Tsis yog -kev sib xyaw ua ke ntawm cov hlau yog qhov tseem ceeb tshaj plaws kev ntsuas ntsuas qhov zoo hauv metallurgical thiab cov qauv purity ntawm cov hlau. Kev ntsuam xyuas kev tshawb fawb thiab cov qauv ntsuas ntsuas ntsuas tau zoo tuaj yeem txheeb xyuas qhov micro- theem ntawm cov hlau tsis raug, txiav txim siab cov khoom zoo, thiab muab kev lees paub zoo rau kev xa khoom steel thiab daim ntawv thov engineering.
Los ntawm kev soj ntsuam nruj me ntsis thiab kev tswj hwm kev suav nrog cov txheej txheem, peb xyuas kom meej tias tag nrho cov khoom siv hlau xa tawm muaj cov khoom siv hauv siab, cov txheej txheem microstructure thiab kev ruaj ntseg zoo heev, thiab tsis tu ncua muab siab - purity thiab siab - kev ntseeg siab steel raw khoom rau ntiaj teb siab - qauv engineering tej yaam num.
