1. Lub zog
Lub zog Performance index ntawm hlau yog txiav txim los ntawm elastic txwv σ e. Yield limit σ y. Thiab tensile txwv σ u. Cov qauv tsim yog ua raws li lub zog tawm los ntawm cov hlau. High yield zog tuaj yeem txo qhov hnyav ntawm cov qauv, txuag steel, thiab txo nqi. tensile lub zog σ U yog qhov siab tshaj plaws uas cov hlau tuaj yeem tiv taus ua ntej tsis ua haujlwm. Lub sijhawm no, cov qauv poob nws qhov kev ua tau zoo vim yog cov yas deformation loj, tab sis cov txheej txheem deformation loj thiab tsis tawg, ua tau raws li qhov yuav tsum tau ua kom tsis txhob muaj av qeeg tsawg ' σ U / σ Tus nqi ntawm y tuaj yeem suav tau tias yog ib qho parameter rau steel. lub zog cia.
2. Plasticity
Lub plasticity ntawm steel feem ntau yog hais txog cov cuab yeej ntawm cov yas deformation tseem ceeb yam tsis muaj kev puas tsuaj tom qab kev ntxhov siab tshaj qhov taw tes tawm. Qhov taw qhia tseem ceeb rau kev ntsuas cov yas deformation muaj peev xwm ntawm cov hlau yog elongation δ Thiab qhov txo qis hauv cheeb tsam ψ.
3. Txias bending kev ua tau zoo
Qhov txias khoov kev ua tau zoo ntawm cov hlau yog qhov ntsuas ntawm nws qhov kev tiv thaiv kom tawg thaum raug cov yas deformation thaum khoov ntawm chav tsev kub. Qhov txias khoov kev ua tau zoo ntawm cov hlau yog sim los ntawm kev sim txias khoov los xyuas qhov kev khoov deformation ntawm cov hlau nyob rau hauv cov txheej txheem khoov.
4. cuam tshuam toughness
Qhov cuam tshuam toughness ntawm steel yog hais txog lub peev xwm ntawm cov hlau kom nqus tau cov khoom siv hluav taws xob kinetic thaum lub sij hawm tawg ntawm cov txheej txheem hauv kev cuam tshuam. Nws yog cov cuab yeej cuab tam uas ntsuas qhov tsis kam ntawm cov hlau rau kev cuam tshuam, uas tuaj yeem ua rau tawg tawg vim qhov kub thiab txias thiab kev ntxhov siab. Qhov cuam tshuam toughness Performance index ntawm steel feem ntau tau txais los ntawm kev ntsuam xyuas ntawm cov qauv qauv.
5. Kev ua haujlwm vuam
Kev ua tau zoo ntawm cov hlau yog hais txog lub peev xwm kom tau txais kev ua haujlwm siab welded pob qij txha nyob rau hauv qee yam txheej txheem vuam. Vuam kev ua tau zoo tuaj yeem muab faib ua ob hom: vuam kev ua tau zoo thaum lub sijhawm vuam thiab vuam kev ua tau zoo raws li kev siv tau. Kev ua haujlwm vuam thaum lub sij hawm vuam yog hais txog qhov rhiab heev ntawm cov vuam seam thiab cov hlau nyob ze ntawm lub vuam seam kom tsis txhob ua kom kub tawg lossis txias shrinkage tawg thaum lub sij hawm vuam. Kev ua haujlwm vuam zoo yog hais txog qhov tsis muaj cov kab nrib pleb hauv ob qho tib si vuam hlau thiab cov hlau nyob ze nyob rau hauv qee yam txheej txheem vuam. Lub vuam kev ua tau zoo nyob rau hauv cov nqe lus ntawm usability yog hais txog qhov cuam tshuam toughness ntawm lub vuam thiab ductility kev ua tau zoo nyob rau hauv lub tshav kub cuam tshuam cheeb tsam. Nws yog qhov yuav tsum tau hais tias cov khoom siv ntawm cov vuam thiab cov hlau nyob hauv thaj chaw muaj kev kub ntxhov tsis qis dua li cov hlau hauv paus. Peb lub teb chaws lees txais kev ntsuas kev ua haujlwm vuam raws li cov txheej txheem vuam, nrog rau kev ntsuas kev ua haujlwm vuam raws li kev siv tau thiab kev siv zog.
