1. Txoj kev paub qhov txawv ntawm qhov zoo ntawm 304 stainless hlau kav 1. Cov kab noj hniav shrinkage yog dab tsi? Shrinkage kab noj hniav yog tsim thaum cov kua stainless hlau nyob rau hauv cov kua hauv lub xeev thiab shrinks nyob rau hauv cov pwm, qee zaum vim muaj kev cuam tshuam ntawm ib puag ncig, xws li huab cua, qhov kub thiab txias, thiab lwm yam. Qee qhov shrinkage kab noj hniav yog hu ua shrinkage kab noj hniav los ntawm cov kws tshaj lij pom. . 2. Transverse cracks Transverse cracks kuj yooj yim to taub. Transverse kab nrib pleb tshwm sim nyob rau saum npoo ntawm stainless hlau kav. Feem ntau, cov kab nrib pleb tshwm sim thaum lub sij hawm steel ingot, tab sis feem ntau ntawm lawv yog qhov tob tob.
3. Longitudinal crack Paub transverse tawg, ces lub ntsiab lus ntawm longitudinal tawg yog pom tseeb. Cov kab nrib pleb ntev yog cov kab nrib pleb ntev uas tshwm rau saum npoo ntawm cov hlau ingots, feem ntau tshwm nyob rau sab sauv thiab cov ces kaum, thiab cov kab nrib pleb ntev tshwm nyob rau sab saud yuav tob dua.
4. Scarring Raws li tau hais los saum toj no, tej zaum yuav muaj cov kab nrib pleb ntev nyob rau sab sauv lossis cov ces kaum ntawm cov yeeb nkab steel hlau, thiab qee zaum yuav muaj cov hlau tawg ntawm lub plhaub ntawm daim tawv nqaij pleev lossis qog pleev rau hauv qhov chaw qis, uas zoo li lub pob. Cov txheej ntawm cov caws pliav yog tib yam, yog li lawv hu ua nti. Txawm li cas los xij, qhov teeb meem no yeej tsawg heev.
5. Nto pores Qhov pores ntawm 304 stainless hlau kav kuj tau nkag siab zoo. Ntau qhov me me tuaj yeem pom nrog lub qhov muag liab qab ntawm qhov chaw ntawm stainless hlau. Feem ntau ntawm cov pores no ntiav heev, zoo li cov kab nrib pleb.