Cov hlau txhuas billet yog qhov kev xaiv nrov rau ntau yam lag luam vim lawv ua lub luag haujlwm tseem ceeb hauv ntau qhov chaw xws li tsheb, aerospace thiab kev tsim kho vim lawv qhov hnyav sib dua, lub zog siab thiab kev ua kom sov zoo heev. Txawm li cas los xij, cov txheej txheem casting txhuas billet xav tau cov khoom siv tshwj xeeb thiab cov ntaub ntawv kom ntseeg tau tias cov khoom zoo. Ib qho tseem ceeb yog cov ntxhua khaub ncaws faib khoom.
Lubkev faib khoom ntxuavyog ib feem ntawm lub tshuab casting aluminium billet, siv rau casting phaj thiab tsim los rautshuab casting kub sab saum tojntawm txhuas thiab txhuas alloys. Cov kua txhuas tawm los ntawmlub cub tawgthiab dhau los ntawm ib qholub tshuab ntxhua khaub ncaws ceramic thiab tom qab ntawd los ntawm ib qholub thawv lim dejrau lub chaw ntxuav khoom faib tawm. Nws yog lub luag haujlwm rau kev ntws du thiab ua haujlwm tau zoo ntawm cov txhuas yaj rau hauv pwm, kom ntseeg tau tias qhov tseeb thiab kev ncaj ncees ntawm cov khoom kawg.
Yuav kom ua tau raws li qhov xav tau ntawm cov txheej txheem casting aluminium billet, lub tshuab ntxhua khaub ncaws faib khoom yog ua los ntawm cov fiber txhuas-silicate thiab cov khoom siv ceramic. Kev sib xyaw ua ke no muab kev rwb thaiv cua sov zoo heev, ua kom muaj kev poob cua sov tsawg kawg nkaus thaum lub sijhawm casting. Kev rwb thaiv cua sov zoo kuj pab tswj qhov kub thiab txias tas li hauv pwm, uas ua rau zoo dua casting thiab txo qhov tsis zoo. Tsis tas li ntawd, lub tshuab ntxhua khaub ncaws faib khoom muaj kev tiv thaiv cua sov zoo heev, ua rau lawv tiv taus qhov kub siab ntawm cov kua txhuas. Qhov kev tiv thaiv kub siab no ua kom ntseeg tau tias lub tshuab ntxhua khaub ncaws faib khoom ruaj khov thiab lub neej ntev, ua rau nws yog qhov kev xaiv pheej yig rau cov tuam txhab casting.
Lwm yam tseem ceeb ntawm lub tshuab ntxhua khaub ncaws faib khoom yog lawv cov yam ntxwv tsis lo rau txhuas. Cov txhuas yaj feem ntau lo rau ntawm qhov chaw ntawm cov khoom siv, ua rau muaj slag thiab txo qis kev ua haujlwm. Qhov xwm txheej tsis lo rau ntawm lub tshuab ntxhua khaub ncaws faib khoom tuaj yeem tiv thaiv kev tsim slag, ua kom ntseeg tau tias cov kua txhuas ntws zoo thaum lub sijhawm casting thiab txuag sijhawm ntau tshaj plaws. Qhov sib txawvriCov tshuab ntxhua khaub ncaws kuj muaj zog thiab tiv taus kev txhuam thiab tuaj yeem tiv taus cov dej ntws ntawm txhuas yam tsis muaj kev hloov pauv lossis kev puas tsuaj. Lub zog siab no tsis yog tsuas yog ua kom ntseeg tau tias cov khoom cam khwb cia muaj kev ruaj khov, tab sis kuj tseem txuag cov nqi ntawm cov chaw tsim khoom los ntawm kev txo qhov xav tau hloov pauv ntau zaus.
Ntxiv rau cov khoom siv zoo heev, cov tshuaj ntxuav faib tawm muab kev tiv thaiv xeb zoo dua. Qhov xwm txheej corrosive ntawm cov txhuas molten tuaj yeem ua rau cov khoom siv tsis zoo, txo qhov zoo ntawm cov khoom kawg. Txawm li cas los xij, qhov kev tiv thaiv corrosion ntawm cov tshuaj ntxuav faib tawm ua kom ntseeg tau tias cov kua txhuas huv thiab kev ncaj ncees thoob plaws hauv cov txheej txheem casting.
Ntxiv mus, cov tshuab ntxhua khaub ncaws faib tawm feem ntau muaj nyob rau hauv qhov ntau thiab tsawg los ntawm 3″ txog 9″, 10″, 12″, 14″, 16″, 18″, 20″, tab sis cov chaw tsim khoom kuj tseem tuaj yeem hloov kho qhov ntau thiab tsawg ntawm cov tshuab ntxhua khaub ncaws faib tawm kom ntseeg tau tias haum rau txhua daim ntawv thov casting. Qhov kev ywj pheej no tso cai rau cov neeg siv khoom kom ua tau raws li cov kev xav tau sib txawv ntawm kev tsim khoom thiab ua kom muaj txiaj ntsig zoo tshaj plaws.
Yuav kom ntseeg tau tias qhov zoo ntawm lub tshuab ntxhua khaub ncaws faib khoom, zhelu siv cov txheej txheem tsim khoom siab heev xws li kev siv lub tshuab nqus tsev. Qhov no ua kom ntseeg tau tias cov khoom ua haujlwm zoo dua thiab txhim kho qhov zoo ntawm cov khoom kawg. Kev sib xyaw ua ke ntawm cov txheej txheem tsim khoom siab heev thiab cov ntaub ntawv zoo ua rau kev ntxhua khaub ncaws faib khoom yog ib feem tseem ceeb ntawm cov txheej txheem casting txhuas.
Hauv kev xaus lus, kev siv cov tshuab ntxhua khaub ncaws faib khoom hauv kev ua txhuas yog qhov tseem ceeb heev kom ntseeg tau tias cov khoom tsim tau zoo ntawm cov txhuas billet. Nws cov cua sov zoo, tiv taus kub siab, cov khoom txhuas tsis lo, lub zog siab, lub neej ntev, tiv taus kev txhuam thiab xeb ntawm cov kua txhuas ua rau nws yog qhov kev xaiv zoo heev rau cov chaw tsim khoom. Lub tshuab ntxhua khaub ncaws faib khoom kuj tau txais txiaj ntsig los ntawm nws lub peev xwm los hloov kho rau cov kev xav tau tshwj xeeb, ua rau nws yog qhov kev daws teeb meem ntau yam thiab pheej yig. Nrog rau cov thev naus laus zis tsim khoom siab heev thiab cov khoom siv zoo dua, kev ntxhua khaub ncaws faib khoom tau dhau los ua ib feem tseem ceeb ntawm cov txheej txheem txhuas billet casting, tsav kev ua haujlwm zoo thiab cov khoom zoo hauv kev lag luam txhuas.
Lub sijhawm tshaj tawm: Cuaj hlis-09-2023