hlau castings
Castings yog hlau zoo li cov khoom tau los ntawm ntau txoj kev casting. Ntawd yog, pouring, txhaj tshuaj, nqus tau los yog lwm txoj kev casting yog siv los nchuav cov kua hlau smelted rau hauv cov pwm npaj ua ntej. Tom qab txias, polishing thiab lwm cov txheej txheem tom qab ua tiav. , cov khoom tshwm sim muaj qee yam zoo li, qhov loj me thiab kev ua haujlwm zoo.
Casting zoo feem ntau suav nrog cov tsos zoo, qhov zoo ntawm lub cev thiab kev siv zoo. Cov tsos mob zoo yog hais txog qhov roughness ntawm qhov chaw, qhov tsis xws luag, qhov sib txawv ntawm qhov sib txawv, qhov sib txawv ntawm qhov sib txawv, thiab qhov hnyav sib txawv ntawm qhov casting; intrinsic zoo mas yog hais txog cov tshuaj muaj pes tsawg leeg, lub cev muaj zog, mechanical zog, metallographic qauv ntawm lub casting, thiab lub qhov, kab nrib pleb, thiab Inclusions thiab lwm yam. Kev rho tawm, thiab lwm yam.; Kev siv zoo yog hais txog kev ua tau zoo ntawm kev ua haujlwm ntawm castings nyob rau hauv ntau yam kev mob, xws li hnav tsis kam, corrosion kuj, cuam tshuam tsis kam, kub tsis kam, qaug zog, poob siab absorbing thiab lwm yam khoom, nrog rau cov txheej txheem cov khoom xws li txiav processability thiab weldability.
Qhov zoo ntawm castings muaj kev cuam tshuam zoo rau kev ua haujlwm ntawm cov khoom siv tshuab. Piv txwv li, kev hnav tsis kam thiab qhov ruaj khov ntawm lub tshuab cuab yeej castings ncaj qha cuam tshuam rau qhov raug thiab kev pabcuam lub neej ntawm cov cuab yeej siv tshuab; Qhov luaj li cas, cov duab raug thiab nto roughness ntawm impellers, casings thiab hydraulic qhov chaw ntawm ntau lub twj tso kua mis ncaj qha cuam tshuam rau kev ua hauj lwm efficiency ntawm twj thiab hydraulic systems. , kev siv hluav taws xob thiab kev loj hlob ntawm cavitation, thiab lwm yam .; Lub zog thiab thermal poob siab tsis kam ntawm sab hauv combustion cav lub tog raj kheej blocks, lub tog raj kheej taub hau, lub tog raj kheej liner, piston rings, cov kav dej thiab lwm yam castings ncaj qha cuam tshuam rau kev ua haujlwm ntawm lub cav.
Muaj ntau yam uas cuam tshuam rau qhov zoo ntawm castings. Thawj yog cov txheej txheem tsim ntawm cov casting. Thaum tsim, ntxiv rau kev txiav txim siab cov duab kos duab thiab qhov loj me raws li kev ua haujlwm thiab cov khoom siv hlau, qhov laj thawj ntawm tus tsim yuav tsum tau txiav txim siab los ntawm qhov kev xav ntawm casting alloy thiab casting txheej txheem cov yam ntxwv, uas yog, pom tseeb qhov loj me thiab solidification tej yam kev mob thiab shrinkage. , kev ntxhov siab thiab lwm yam teeb meem, kom zam los yog txo qhov tshwm sim ntawm qhov tsis xws luag xws li kev sib cais ntawm cov khoom, deformation, thiab tawg ntawm castings. Qhov thib ob, yuav tsum muaj txheej txheem casting tsim nyog. Ntawd yog, raws li cov qauv, qhov hnyav thiab qhov loj ntawm qhov casting, cov yam ntxwv ntawm cov hlau casting thiab cov khoom tsim, qhov tsim nyog parting nto thiab cov duab, cov tub ntxhais ua txoj kev, thiab qhov tsim nyog qhov chaw ntawm lub casting bar, chilled hlau, riser thiab rooj vag system raug xaiv. Xyuas kom zoo ntawm castings. Qhov thib peb yog qhov zoo ntawm cov khoom siv raw siv hauv casting. Cov ntaub ntawv tsis tsim nyog xws li cov khoom siv hlau, cov khoom siv refractory, roj, fluxes, modifiers, molding sand, molding sand binders, thiab coatings yuav ua rau muaj qhov tsis xws luag xws li pores, pinholes, slag inclusions, thiab xuab zeb sticking hauv castings, cuam tshuam qhov zoo ntawm castings. Qhov zoo ntawm castings. thiab sab hauv zoo, uas tej zaum yuav ua rau castings yuav tsum scrapped nyob rau hauv loj heev mob. Qhov thib plaub yog cov txheej txheem ua haujlwm. Cov txheej txheem kev ua haujlwm tsim nyog yuav tsum raug tsim los txhim kho qib kev ua haujlwm ntawm cov neeg ua haujlwm kom cov txheej txheem txheej txheem tuaj yeem raug siv tau.
Hauv kev tsim cov casting, qhov zoo ntawm castings yuav tsum tau tswj thiab tshuaj xyuas. Ua ntej, peb yuav tsum tsim cov txheej txheem txheej txheem thiab cov txheej txheem rau kev tswj thiab tshuaj xyuas cov khoom siv raw, excipients, thiab txhua yam khoom tshwj xeeb. Txhua tus txheej txheem yog tswj thiab tshuaj xyuas nruj raws li cov txheej txheem kev cai thiab cov txheej txheem kev ua haujlwm. Thaum kawg, qhov tiav casting yog tshuaj xyuas kom zoo. Cov txheej txheem xeem tsim nyog thiab cov neeg ua haujlwm kuaj xyuas tsim nyog yuav tsum tau nruab. Feem ntau hais lus, rau qhov zoo ntawm cov castings, cov qauv sib piv tuaj yeem siv los txiav txim qhov roughness ntawm castings; Cov kab nrib pleb me me tuaj yeem raug tshuaj xyuas los ntawm txoj kev xim thiab txoj kev sib nqus particle. Qhov zoo ntawm castings tuaj yeem raug tshuaj xyuas thiab txiav txim siv suab, ultrasonic, eddy tam sim no, X-ray, -ray thiab lwm txoj kev.
Qhov tsis zoo ntawm cov xuab zeb castings muaj xws li: txias kaw, tsis txaus pouring, pores, xuab zeb sticking, xuab zeb inclusions, hlwv, nthuav cov xuab zeb, thiab lwm yam.
Forgings thiab castings yog qhov tseem ceeb rau kev tsim ntau yam khoom siv tshuab, boilers, thiab cov hlab ntsha siab. Hauv particular, forgings yog dav siv nyob rau hauv kev tsim cov high-parameter loj cov hlab ntsha thiab cov khoom siab. Lawv feem ntau tsim qee qhov tsis xws luag thaum lub sijhawm tsim khoom thiab ua tiav, uas cuam tshuam rau kev nyab xeeb ntawm cov cuab yeej siv, yog li kev kuaj ultrasonic yog qhov tsim nyog.
