1. Metallography
Metallography yog ib qho ntawm cov txheej txheem tseem ceeb rau cov txawv welded steel kav los ntawmSeamless Steel KavCov. High-freatency tsis kam welded steel kav tsis ntxiv vuam cov ntaub ntawv, yog li ntawd Weld Seam hauv Welded Steel Yeeb yog heev nqaim. Yog tias txoj kev ntawm kev sib tsoo ntxhib thiab tom qab ntawd corrosion yog siv, chav Weld tsis tuaj yeem pom meej. Thaum lub high-zaus tawm tsam welded steel yeeb nkab yog welded thiab tsis tau kho cua sov, tus qauv WELD sib txawv ntawm cov yeeb nkab steel. Nyob rau lub sijhawm no, cov qauv hlau ntsuas hluav taws xob tuaj yeem siv los paub qhov txawv welded steel kav los ntawm Seamless steel kav. Nyob rau hauv cov txheej txheem ntawm kev paub qhov sib txawv ntawm ob tus qauv steel, nws yog qhov tsim nyog los txiav cov qauv me me nrog qhov sib tsoo me thiab sib tsoo, thiab tom qab ntawd saib cov qauv hauv qab ntawm daim hlau me me. Thaum Ferrite thiab Hidmanstatten, Cov Khoom Siv Niam Txiv thiab cov qauv weld, cov yeeb nkab welded, cov yeeb nkab welded tuaj yeem yog qhov txawv.
2. Corrosion Txuj
Nyob rau hauv cov txheej txheem ntawm kev siv cov txheej txheem corrosion kom paub qhov txawv welded steel kav thiab seamless steel kav, weld ntawm cov txheej txheem welded steel yeeb yuav tsum muaj polished. Tom qab cov polishing ua tiav, cov cim polishing yuav tsum tau pom. Tom qab ntawd, lub ntsej muag kawg yog polished nrog cov xuab zeb ntawm Weld, thiab lub ntsej muag kawg yog kho nrog 5% nitric acid Chrow tov. Yog tias muaj ib qho pom tseeb pom pom tseeb, nws tuaj yeem ua pov thawj tias cov yeeb nkab steel yog welded steel yeeb nkab. Nws tsis muaj qhov sib txawv ntawm qhov kawg ntawm lub ntsej muag uas tsis sib xws tom qab corrosion.
3. Qhia qhov txawv welded steel kav thiab seamless steel kav raws li cov txheej txheem
Nyob rau hauv tus txheej txheem ntawm kev paub qhov txawvWelded Hlau KavThiab Seamless Steel kav raws li cov txheej txheem, txhua Welded Steel kav yog welded raws li cov txheej txheem xws li txias dov thiab extrusion. Tsis tas li ntawd, thaum muaj kev kub ntau zaus arc vuam kav hlau vuam thiab ncaj leeg vuam cov kav hlau welding yuav raug tsim, muab kauv yeeb nkab vuam hlau, uas yuav ua rau cov kav hlau vuam Cov kav dej, duab hluav taws xob hlau steel, cov kav hlau hexagonal steel, wilted steel kav hlau, thiab txawm tias ntau cov kav hlau nplaum. Hauv ntej, cov txheej txheem sib txawv yuav tsim cov kav hlau steel ntawm cov qauv sib txawv, yog li ntawd welded steel kav thiab seamless steel kav tuaj yeem ua kom meej meej. Txawm li cas los xij, nyob rau hauv cov txheej txheem ntawm kev paub qhov txawv seamless steel kav hlau thiab seamless steel kav thiab cleamless steel kav kuj tseem muaj ob daim ntawv loj, uas yog kub-rolled steel kav thiab cold- rolled seamless steel kav. Kub-dov cov kav hlau seamless steel yog tsim los ntawm cov xim zoo nkauj, dov thiab lwm cov txheej txheem, cov khoom siv tuab loj thiab tuab seamless hlau yog welded los ntawm tus txheej txheem no; Txias cov kav dej kav yog tsim los ntawm cov kav dej txias ntawm cov kav dej, thiab lub zog ntawm cov khoom siv qis dua, tab sis nws cov chaw sab hauv yog tus.
Lub Sijhawm Post: Lub Tsib Hlis-17-2024