Yog vim li cas rau porosity ntawm qhov chaw ntawm stainless hlau kav

Nto pores yog ib qho tsis xws luag ntawm cov kav hlau tsis muaj steel, tshwj xeeb tshaj yog nyob rau ntawm qhov me me Φ150mm. Thaum nws tshwm sim, ntau tus neeg ua haujlwm thiab cov khoom siv yuav tsum tau nqis peev rau hauv nruab nrab kev sib tsoo thiab ua tiav ntawm qhov tsis xws luag. Nyob rau tib lub sijhawm, ntau cov khoom seem yuav tshwm sim, uas yuav ua rau muaj kev puas tsuaj loj.
1. Qhov tshwm sim ntawm qhov pores
Discrete "inverted Ω" qhib qhov yog tsim rau ntawm qhov chaw ntawm lub raj puag ncig. Lub qhov qhib yog puag ncig thiab txoj kab uas hla me dua li sab hauv. Txoj kab uas hla yog me dua lub slag qhov. Sab hauv phab ntsa yog du thiab tsis muaj residue zoo li slag. Deg pore tsis xws luag txhua yam tshwm sim ntawm 304 stainless hlau kav uas tsis electroplated thaum lub caij los nag lossis huab cua ntub.
2. Ua rau ntawm qhov pores
Tom qab kev soj ntsuam, nws ntseeg tau tias thaum cov ntsiab lus hydrogen hauv cov kav hlau tsis muaj steel ntau tshaj nws cov dej solubility hauv cov hlau, thaum lub sij hawm solidification txheej txheem ntawm crystallizer, cov roj solubility txo qis nrog qhov kub thiab txias thiab cov qauv kev hloov, thiab hydrogen thiab nitrogen yuav precipitate hauv. cov hlau. thiab carbon monoxide gas, uas nucleate thiab loj hlob mus ua npuas me me. Cov txheej txheem ntab ntawm cov npuas me me yuav ntxiv cov pa roj thiab maj mam loj tuaj, ntxiv kom nrawm nrawm nrawm. Cov npuas uas nws ntab ceev yog siab dua qhov kev sib zog ceev ntawm cov hlau molten thiab nyob deb ntawm cov meniscus tuaj yeem raug tshem tawm kom zoo, thaum cov npuas uas nws ntab ceev yog me dua qhov sib zog ceev ntawm cov hlau molten thiab ze rau lub meniscus yog ntes los ntawm cov thawj. groove-shaped solidification plhaub. Thaum lub siab zoo li qub ntawm cov hlau molten tseem nce ntxiv thiab nyob rau hauv kev sib koom ua ke ntawm kev vibration ntawm crystallizer thiab qhov nruam stretching thiab kho ntawm lub plhaub billet, cov npuas tawg los ntawm cov khoom plhaub thiab raug tso tawm los tsim cov pore tsis xws luag.
3. Qhov ntsuas qhov pore tswj
1) Txhim khu kev tswj cov khoom siv raw rau cov kav dej stainless hlau, khaws txhua yam khoom kom qhuav, thiab ua kev ntsuas los tiv thaiv los nag thiab noo noo thaum thauj khoom thaum lub caij los nag. Lub sij hawm cia ntawm txiv qaub yuav tsum tsis pub tshaj 12 teev, thiab cov hlau yuav tsum tau ci ua ntej siv. Cov hlau tsis tuaj yeem ua tau thaum lub tshuab hluav taws xob hloov hluav taws xob lossis lub hau npog lub qhov cub tawg.
2) Thaum lub sijhawm ua haujlwm ntawm lub qhov cub hluav taws xob, kho cov plua plav tshem tawm huab cua kom raws sijhawm, tswj lub siab me ntsis ntawm lub qhov cub qhov cub, thiab ntxiv dag zog rau kev tswj cov cua hauv qhov cub; Ua kom lub sijhawm tsim slag tsawg dua lossis sib npaug li 8 feeb, txhim kho cov nyhuv submerged arc, thiab txo qhov nqus ntim ntawm cov hlau molten.
3) Tsim nyog ncua lub sij hawm sedation ntawm mos-blown stainless hlau yeeb nkab raw khoom.
4) Ua kom cov oxidation-free pouring tiv thaiv cov nyhuv thoob plaws tag nrho cov txheej txheem. Ua tib zoo saib xyuas tshwj xeeb rau argon sealing tiv thaiv cov nyhuv ntawm lub qhov ntev ntawm lub ladle los tiv thaiv cov kua hlau los ntawm kev nqus cua. Lub tundish ladle adopts ob txheej txheej npog tus neeg sawv cev.
Cov saum toj no yog qhov teeb meem zoo ntawm qhov pores ntawm cov kav dej stainless hlau. Deg pore defects tshwm sim nyob rau hauv cov kav dej uas tsis electroplated thaum lub caij los nag lossis huab cua ntub. Yog li ntawd, stainless hlau yeeb nkab manufacturers yuav tsum ntxiv dag zog rau kev tswj cov khoom siv raw, khaws txhua yam khoom kom qhuav, thiab ntsuas kev thauj mus los thaum lub caij los nag.