Kev ua haujlwm hlau xav tau kev nkag siab zoo ntawm cov khoom thiab cov yam ntxwv ntawm cov xaim uas koj tab tom ua haujlwm nrog. Thaum pib ua qhov haujlwm nyiam no, qhov ntau ntawm cov hlau thiab hlau tuaj yeem ua rau me ntsis txaus ntshai thaum xub thawj. Kab lus no piav qhia cov ntsiab lus tseem ceeb ntawm xaim txhawm rau pab koj nkag siab sai txog yam tseem ceeb thaum xaiv thiab siv xaim.
Cov kauj ruam
Kauj Ruam 1. Txheeb xyuas qhov nyuaj ntawm xaim
Hardness hais txog qhov yooj yim uas cov hlau tuaj yeem ua tus yam ntxwv, ntsuas tau, nkag mus, lossis pitted. Kev hnyav ua rau pom qhov kawg lossis qhov ci ntawm txoj haujlwm xaim thiab tuaj yeem cuam tshuam rau qhov project nthuav tawm zoo li cas. Yog tias koj siv tooj liab lossis txhuas, koj tab tom ua haujlwm nrog cov hlau mos, qhov hlau yog tawv.
Kauj Ruam 2. Xav txog qhov ductility ntawm cov xaim
Ductility hais txog lub peev xwm ntawm cov hlau los hloov mus rau hauv qhov dav xaim. Cov xov hlau zoo tshaj yog tsim los ntawm cov hlau zas hlau feem ntau, thiab cov hlau zas hlau tsawg ua cov xov uas tuab dua. Qhov kev txiav txim ntawm ductility yog (feem ntau tsawg kawg):
- Kub
- Nyiaj
- Platinum
- Hlau
- Tooj liab
- Txhuas
- Zinc
- Tin
- Coj
Kauj Ruam 3. Tau siv los ua malleability ua lub hauv paus tseem ceeb rau kev ua haujlwm hlau
Malleability hais txog kev muaj peev xwm ntawm cov hlau kom tiaj tus yam tsis tawg lossis tawg. Qhov no feem ntau yog qhov tseem ceeb heev ntawm kev ua haujlwm hlau! Yog tias koj tsis paub meej, ib txwm xyaum ua ntawm qhov ntsuas ua ntej thiab rauj nws tiaj kom pom dab tsi tshwm sim. Qhov kev txiav txim ntawm malleability yog raws li hauv qab no (feem ntau malleable kom tsawg):
- Kub (yog li malleable nws tuaj yeem ua rau ntawv ci thiab nplooj kub rau ncuav)
- Nyiaj
- Txhuas
- Tooj liab
- Tin
- Platinum
- Coj
- Zinc
- Hlau
Kauj Ruam 4. Xav txog qhov nruj ntawm cov xaim
Rigidity yog qhov txawv ntawm malleability. Nws yuav yog qhov tseem ceeb hauv qee qhov haujlwm uas koj lub xov tooj tsis muaj ib qho muab yog li cov duab ntawm txoj haujlwm tau khaws cia ntev.
Kauj Ruam 5. Kawm paub txog lub zog tensile ntawm xaim
Lub zog Tensile hais txog ntau npaum li cas kev nyuab siab xaim tuaj yeem siv tau thaum ncab ntawm qhov kawg. Qhov no tuaj yeem yog qhov tseem ceeb rau cov phiaj xwm nthuav cov hniav nyiaj hniav kub, lossis rau cov duab puab uas xav tau kev sib luag lossis tuav ntawm qee yam. Tooj liab muaj lub zog tensile zoo heev.
Kauj Ruam 6. Kawm paub txog cov hlau sib txawv
Thaum yuav koj cov xaim, nws tuaj yeem muaj ntau yam duab tau, xws li puag ncig, ib nrab-puag ncig, xwmfab, thiab tiaj tus. Tsis tas li, koj yuav tsum paub koj tus kheej nrog cov ntsuas sib txawv ntawm cov xaim muaj. Qhov tuab thiab tuab ntawm cov hlau koj xaiv yuav nyob ntawm cov haujlwm koj tab tom ua. Mus ntsib ib lub khw thiab txheeb xyuas lawv, hnov lawv thiab pom dab tsi ua haujlwm rau koj. Nws tuaj yeem pab yuav ntau qhov piv txwv los ua si ib puag ncig nrog hauv koj lub rooj cob qhia kom pom qhov ua haujlwm zoo tshaj plaws rau koj li kev muaj tswv yim.
