Cov txheej txheem kev ua tau zoo ntawm cov khoom siv yog hais txog lub peev xwm ntawm cov khoom siv los hloov mus rau txoj kev ua haujlwm txias thiab kub.
(I) Mechanical Properties
Mechanical zog yog cov khoom ntawm cov ntaub ntawv hlau nyob rau hauv qhov kev txiav txim ntawm sab nraud quab yuam.
1. Lub zog: lub peev xwm ntawm cov khoom tiv thaiv deformation thiab tawg nyob rau hauv qhov kev txiav txim ntawm sab nraud quab yuam (load). Lub load rau ib chav tsev ntawm cov khoom yog hu ua kev ntxhov siab.
2, yield point (tso tawm s): lub zog yield yog hais txog cov khoom nyob rau hauv tus txheej txheem ntawm stretching, kev nyuaj siab ntawm cov khoom mus txog ib tug tej yam tseem ceeb tus nqi, lub load tsis nce lub deformation tab sis mus ntxiv los yog tsim {{1} }.2 feem pua L. Cov chav qhia tau hais hauv Newton /mm2 (N / mm2).
3. Tensile lub zog, tseem hu ua lub zog txwv, hais txog qhov siab tshaj plaws ntawm cov khoom siv tuaj yeem dais ua ntej tawg. Chav tsev tau qhia hauv Newtons / mm2 (N / mm2).
4. Elongation (δ): qhov feem pua ntawm tag nrho cov elongation ntawm cov khoom tom qab tensile tawg mus rau qhov qub deb ntev.
5. Qhov siab tshaj plaws txo thaj tsam ntawm A thiab qhov feem pua ntawm cov seem seem tom qab tensile tawg.
6. Hardness: yog hais txog lub peev xwm ntawm cov khoom siv los tiv thaiv lub siab ntawm lwm yam khoom nyuaj ntawm nws qhov chaw. Feem ntau siv hardness yog ntsuas raws li nws qhov ntau ntawm cov hardness faib (HBS, HBW) thiab Rockwell hardness (HKA, HKB, HRC).
7. Impact toughness (Ak): Lub peev xwm ntawm cov khoom siv los tiv thaiv kev cuam tshuam, hauv Joules / cm2 (J / cm2).
(2) Cov txheej txheem ua haujlwm
Lub peev xwm ntawm cov khoom siv los tiv thaiv ntau yam kev ua thiab tuav.
8, casting kev ua tau zoo: hais txog seb cov hlau lossis hlau puas tsim nyog rau kev ua haujlwm ntawm cov txheej txheem, feem ntau suav nrog kev ua haujlwm txaus, tag nrho cov peev txheej casting; Shrinkage, lub peev xwm ntawm casting ntim shrinkage thaum solidification; Segregation hais txog cov tshuaj muaj pes tsawg leeg tsis sib xws.
9, vuam kev ua tau zoo: hais txog cov khoom siv hlau los ntawm cov cua sov lossis cua sov thiab cov txheej txheem vuam siab, vuam ob lossis ntau cov ntaub ntawv hlau ua ke, qhov cuam tshuam tuaj yeem ua tau raws li lub hom phiaj ntawm kev siv cov yam ntxwv.
10. Kev ua tau zoo ntawm lub taub hau: nws hais txog qhov kev ua tau zoo uas cov khoom siv hlau tuaj yeem tiv taus sab saum toj forging yam tsis muaj kev tawg.
11, txias dabtsi yog khoov kev ua tau zoo: hais txog cov khoom siv hlau ntawm chav tsev kub tuaj yeem tiv thaiv kev khoov yam tsis muaj kev ua haujlwm tawg. Qhov khoov degree feem ntau qhia los ntawm qhov piv ntawm dabtsi yog khoov lub kaum sab xis (lub kaum sab xis) los yog dabtsi yog khoov center txoj kab uas hla d rau cov khoom thickness a. Qhov loj dua los yog qhov me me d/a, qhov zoo dua qhov txias khoov khoom ntawm cov khoom.
12. Stamping kev ua tau zoo: lub peev xwm ntawm cov khoom siv hlau tuaj yeem tiv taus stamping deformation yam tsis muaj kev tawg. Stamping ntawm chav tsev kub yog hu ua txias stamping. Txoj kev xeem khob txheej txheem xeem tau siv los kuaj.
13. Forging kev ua tau zoo: Lub peev xwm ntawm cov khoom siv hlau tuaj yeem tiv taus cov yas deformation yam tsis muaj kev tawg hauv forging thiab nias.
(3) Cov khoom siv tshuaj
Qhov tsis kam ntawm cov khoom siv hlau rau tshuaj lom neeg lossis cov tshuaj electrochemical thaum txhuam tawm tsam qhov nruab nrab ib puag ncig.
14, corrosion kuj: hais txog lub peev xwm ntawm cov ntaub ntawv hlau los tiv thaiv ntau yam xov xwm yaig.
15. Oxidation kuj: hais txog lub peev xwm ntawm cov ntaub ntawv hlau los tiv thaiv oxide ntawm daim tawv nqaij ntawm qhov kub thiab txias.
