Tsuas muaj ob hom log ntawm lub khw, hlau thiab txhuas.
Tus nqi casting yog pheej yig, thiab cov lus hais ntawm lub log log muaj ntau yam duab, tab sis nws qhov tawv tsis txaus, thiab nws yooj yim rau deform hauv kev sib tsoo loj. Forging yog qhov sib dua thiab nyuaj dua thiab nyab xeeb dua li casting. Vim tias cov txheej txheem tsim khoom yog nyuab dua, tus nqi yog kim ntau dua li kev pov tseg. .
Casting yog cov txheej txheem ua cua sov hlau uas tib neeg tau kawm tiav thaum ntxov, nrog keeb kwm txog 6000 xyoo. Tuam Tshoj tau nkag mus rau lub caij ntuj nag ntawm tooj liab castings ntawm 1700 thiab 1000 BC, thiab cov khoom siv tes ua tau mus txog qib siab heev. Casting yog ib txoj hauv kev nchuav cov kua hlau rau hauv cov kab noj hniav uas tsim nyog rau cov duab ntawm ib feem, thiab tom qab nws tau txias thiab khov kho, tau txais ib feem lossis dawb paug. [1] Feem ntau ntawm cov ntaub ntawv pov thawj yog cov hlau uas yog cov khoom qub tab sis ua kom sov ua kua (piv txwv li: tooj liab, hlau, txhuas, tin, txhuas, thiab lwm yam), thiab cov khoom ntawm cov pwm tuaj yeem yog xuab zeb, hlau lossis txawm tias yog cov khoom siv hauv tsev . Raws li qhov xav tau sib txawv, txoj hauv kev siv yuav txawv.
Forging yog txheej txheem txheej txheem uas siv cov tshuab forging los siv lub siab rau cov hlau kom tsim cov yas deformation kom tau txais kev zam txim nrog qee yam khoom siv dag zog, qee yam duab thiab ntau thiab tsawg. Forging (forging thiab stamping) yog ib qho ntawm ob qho tseem ceeb. Forging tuaj yeem tshem tawm qhov tsis xws luag xws li kev pov tseg tsis xoob thaum hlau zom thiab ua kom zoo dua microstructure. Nyob rau tib lub sijhawm, vim kev khaws cia ntawm cov kab hlau ua kom tiav, cov khoom siv dag zog ntawm kev zam txim feem ntau zoo dua li cov khoom qub. Rau qhov tseem ceeb ntawm cov tshuab muaj feem cuam tshuam nrog kev ua haujlwm siab thiab ua haujlwm hnyav, ntxiv rau cov duab yooj yim uas tuaj yeem ua tau, cov ntawv lossis cov khoom txuas, cov kev zam txim feem ntau siv."
Cov ntsiab lus: Yog tias koj xav tau ntau yam ntawm lub log hais lus, tom qab ntawd koj tuaj yeem xaiv cov castings. Yog tias koj lub tsheb feem ntau taug kev nrog ntau yam potholes thiab qhov nrawm dua, nws yog qhov zoo dua los hloov qhov casting.
Txhawm rau yuav lub log, koj yuav tsum paub qhov loj ntawm koj lub tsheb qub ua ntej koj yuav