Casting vs. Forging - Dab Tsi' s Qhov sib txawv?
Casting thiab forging yog ob txoj kev sib txawv ntawm kev hlau. Ob qho txheej txheem no tau muaj ntau txhiab xyoo, tab sis qhov sib txawv ntawm ob txoj kev ua haujlwm hlau yog dab tsi?
Casting Yog Dab Tsi?
Kev tso txheej txheem yog txheej txheem ntawm kev nchuav hlau rau hauv cov pwm los yog tuag thiab tso cai kom txias thiab tawv kom nws thiaj li siv cov duab pwm. Cov txheej txheem yog qhov zoo tagnrho rau huab hwm coj tawm ntawm qhov chaw nrog kev siv rov qab ntawm tib pwm los tsim cov khoom zoo ib yam.
Muaj ob peb hom sib txawv. Die-casting yog thaum ua kua hlau raug yuam kom tuag ua ntej hloov ntawm pwm, thiab nyob ntawd qhov kev thov tso cia nws ua kom txog thaum nws hardens. Tus txheej txheem no paub rau qhov kev siv ceev nrawm nws txhawb nqa. Permanent pwm casting cuam tshuam nrog nchuav cov xim hlau hlau rau hauv cov pwm hlau, siv cov khoom sib tsoo lossis nqus nqus los sau pwm. Pwm tas mus li pwm nruam tuaj yeem tsim cov kev ua kom muaj zog dua li tuag casting, tab sis lawv tuaj yeem nyuaj rau tshem tawm ntawm cov khoom kawg. Vim li no, cov pwm nruam ib nrab kuj tseem muaj. Cov pwm no muaj cores expendable, ua rau lawv tswj tau ntau dua thiab tsis muaj nuj nqis kom tshem tawm.
Txheej txheem kawg txheej txheem yog txheej txheem xuab zeb. Nrog cov xuab zeb nrum, nrum yog tsim los ntawm nias tus qauv ua ke kom zoo ntawm cov xuab zeb. Qhov no tsim pwm pwm rau cov hlau tsis muaj hlau yuav tsum tau hliv. Cov txheej txheem no tau qeeb qeeb tab sis feem ntau muaj kev lag luam ntau dua li lwm cov kev cuam ntawm kev pov. Nws tseem zoo siv thaum kev tsim cov khoom siv dog dig, lossis rau cov hlau loj loj.
Dab tsi yog Forging?
Forging siv compressive quab yuam los ua cov hlau. Tus rauj los yog tuag ntaus tus hlau ua haujlwm kom txog rau thaum qhov uas xav tau tsim. Qhov kev txiav txim siab ntawm lub forging deforms thiab ua rau cov hlau, uas ua rau lub pob nplej tsis ntws tsis pub dhau, uas tso cai rau cov hlau los tuav nws lub zog. Cov teebmeem muaj txiaj ntsig ntawm qhov cim tshwj xeeb no ntws tawm suav nrog kev txiav tawm qhov tsis xws luag, suav nrog, thiab pob txha ntsej muag hauv cov khoom. Lwm qhov zoo dua ntawm kev ua lub siab yog tus nqi qis uas cuam tshuam nrog kev siv khiav hauj lwm nruab nrab thiab ntev. Thaum cov cuab yeej forging tau tsim, cov khoom lag luam tuaj yeem tsim nyob ntawm qhov siab nrawm nrog qhov qis qis.
Yog tias forging ua tiav nrog cov hlau ntawm chav sov, nws yog hu ua txias forging. Forging tseem tuaj yeem ua nrog cov hlau ua kom sov mus rau ib chav ntawm chav tsev kub kom qis dua rau qhov ntsuas kub rov qab thiab yog tom qab ntawd hu ua forging sov. Thaum cov hlau raug rhaub rau nws qhov recrystallization kub, uas sib txawv los ntawm cov hlau, cov txheej txheem hu ua kub forging. Forging yog ib qho ntawm cov laus tshaj plaws ntawm kev tsim, nrog kws ntaus hlau siv siv forging ib-paus xyoo dhau los.
Dab tsi Qhov txawv ntawm Casting thiab Forging?
Forging tsim cov khoom siv hlau nrog feem ntau muaj zog dua uas feem ntau nruj dua cov hlau ua tiav hauv cov hlau nplaum. Kev zam txim rau hlau tsis tshua nyob ntawm qhov sib cuag nrog lwm yam khoom. Lub zog muaj zog ntxiv yog qhov tshwm sim ntawm qhov uas cov hlau raug yuam rau hauv cov duab tshiab, los ntawm nias lossis los ntawm kev rauj, thaum lub zog. Raws li txwv tsis pub rau lwm txoj kev ntawm kev tsim, cov hlau nplej tau ncab cov hauv cov txheej txheem no, ua ib kab mus rau ib qho kev taw qhia es tsis txhob cia li xaiv. Qhov kawg ntawm cov txheej txheem forging, cov hlau uas tau tshwm sim muaj zog tshaj qhov nws xav tau yog nws tau muab pov tawm.
Txawm li cas los xij, forging muaj cov kev txwv me me. Shaping hlau yog qhov nyuaj dua nrog forging txij li cov txheej txheem ua kom cov hlau nyob hauv lub zog-xeev, tsis zoo li nrum hlau. Txij li kev hloov cov hlau cov duab yog qhov nyuaj nrog kev ua kom sib luag, nws muaj qhov txwv ntawm qhov loj thiab tuab ntawm hlau rau forging. Qhov loj dua cov hlau ntu ua haujlwm, qhov nyuaj nws yuav tsum ntaus.
Nrog casting, molten hlau ntws mus rau hauv kab noj hniav hauv pwm lossis tuag, uas tso cai rau ntau cov duab kom tau yooj yim. Xyaum cov khoom siv tuaj yeem pov, thiab cov khoom lag luam txog 200 tons tuaj yeem tsim tau. Casting yog feem ntau ntau pheej yig tshaj li forging. Ob leeg cuam thiab forging tau lawv qhov zoo thiab qhov tsis zoo, yog li cov txheej txheem zoo dua yog nyob ntawm seb dab tsi raug tsim.
