Casting pwm: nta, thev naus laus zis, hom

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Cov pwm yog cov khoom tseem ceeb tshaj plaws uas yog siv los ua cov hlau molten thiaj li yuav tau txais cov casting uas ua tau raws li txhua qhov kev xav tau ntawm qhov loj, roughness, qauv, thiab cov khoom siv.

Shell Types

Tam sim no, muaj ob hom qauv sib txawv. Qhov sib txawv ntawm lawv yog nyob rau hauv kev tsim cov tshuab pwm. Muaj ntau txheej txheej uas yog tsim los ntawm kev siv lub ncua kev kawm ntawv, nrog rau kev siv cov txheej txheem tom ntej ntawm txheej thiab ziab.

hom thib ob yog ob txheej. Kev tsim cov ntaub ntawv no yog ua los ntawm txoj kev electrophoretic. Cov kev cai tseem ceeb rau lub plhaub pwm yog kub, nruj, roj-permeable, raug, nrog ib tug du nto, thiab ib-thooj.

Multilayer shells

Cov txheej txheem ntawm kev tau txais lub plhaub ntau txheej ua tiav raws li hauv qab no: lub npoo ntawm pwm yog wetted nrog kev ncua. Cov txheej txheem no yog nqa tawm los ntawm dipping daim ntawv hauv cov khoom xav tau. Tom qab tshem tawm lub thaiv los ntawm kev ncua, nws yog tam sim ntawd sprinkled nrog ib tug granular khoom. Lub slurry sticks rau saum npoo ntawm lub thaiv, uas tso cai rau koj los tsim nws cov configuration nrog zoo raug, thiab cov khoom siv granular yog tsim nyog los kho cov slurry ntawm lub pwm, nrog rau ua kom nws cov txheej denser thiab thicker..

Cov txheej txheem tshiab ntawm slurry thiab cov khoom siv granular xyaum tsis ua raws li pwm nto. Qhov tsuas yog ua kom nws tsis txhob zawv zawg yog lub zog ntub dej. Muab lub zog tsim nyog rau daim ntawv no yog ua tiav hauv cov txheej txheem ziab tom ntej - tshuaj hardening. Nws hloov tawm hais tias rau kev tsim ib tug multilayer casting pwm, nws yog tsim nyog los nqa tawm peb theem - moisten lub plhaub nrog ib tug ncua kev kawm ntawv, sprinkle nrog granular khoom, thiab ces qhuav nws. Cov txheej txheem no yog ua los ntawm qhov nruab nrab 4 mus rau 6 zaug. Txawm li cas los xij, yog tias tsim nyog los npaj lub thawv muaj zog, qhov ntau tuaj yeem nce mus txog 12 zaug.

ob txheej txheej

Kev tsim cov pwm ob txheej yog ua nrog cov txheej txheem tsawg dua. Thawj theem ntawm kev npaj pwm tsis txawv ntawm kev tsim cov pwm multilayer. Lub block yog wetted thiab sprinkled nrog ib tug granular khoom. Txawm li cas los xij, ua ntej pib siv cov txheej thib ob, uas yog hu ua phoretic, thawj tus yuav tsum tau moistened dua nrog kev ncua, uas yuav tsum muaj cov electrolyte. Piv txwv li, muaj pes tsawg leeg yuav muaj xws li hydrochloric acid, uas yog ib tug conductor ntawm 2nd hom. Tsis tas li ntawd, lub slurry yuav tsum muaj ib tug binder rau pwm. Thiab tom qab ntub dej, nphoo nrog cov khoom granular dua.

Tom qab ob txheej tau siv rau qhov thaiv, cov txheej txheem ziab pwm pib. Qhov no yog qhov txaus yog tias tsim nyog kom tau txais cov pwm uas nws cov phab ntsa thickness yuav tsis pub tshaj 6-8 hli. Yog tias qhov ntsuas no yuav tsum tau nce ntxiv, ces ob txheej ntxiv tau siv.

Ntau yam

Rau cov txheej txheem hlau casting, yuav tsum muaj pwm casting, uas cov khoom molten yog ib txwm nchuav. Qhov sib txawv tseem ceeb ntawm cov ntawv no yog ib zaug thiab siv ntau yam. Txawm li cas los xij, ob hom kev sib txawv no kuj tau muab faib ua ob peb chav kawm.

Muaj cov xuab zeb pov tseg pwm. Rau kev tsim cov pwm pwm ntawm hom no, tshwj xeeb siliceous xuab zeb yog siv, uas yog tov rau hauv ib lub tshuab tshwj xeeb nrog dej, nrog rau lwm yam kev khi lus. Pwm nyob rau hauv pawg no yog siv los tsim ib feem ntawm txhua daim duab thiab qhov ntau thiab tsawg.

Thaum nrum cov hlau uas tsis yog-ferrous, cov plhaub pwm pov tseg feem ntau yog siv. Gypsum plhaub pwm (muaj xws li gypsum thiab ceev-hardening polymer) yog siv rau txheej txheem ntawm txheej txheem casting. Tom qab plaster plhaub daim ntawv dries, nws yog txiav mus rau hauv ob qhov chaw, uas yog qhuav dua. Tom qab ntawd, daim ntawv txuas nrog thiab cov hlau tuaj yeem nchuav rau hauv nws.

Fusible casting

Yuav kom ua tiav cov txheej txheem yaj casting, plhaub pwm raws li silicon dioxide yog siv. Cov khoom noyog cov hmoov uas tau tuav ua ke los ntawm ntau yam kev sib khi. Kev siv cov pwm no tshwm sim yog tias tsim nyog los tsim ib feem nrog lub siab melting point.

Fusible hlau casting pwm yog ntim nrog ntau yam khoom. Nws tuaj yeem yog paraffin lossis tom qab khov mercury, lossis yas. Tom qab tsim cov qauv, nws yog lined nrog qee yam khoom siv refractory. Kev vibration yog siv los ua kom cov pwm thiab cov txheej txheem refractory. Tom qab cov txheej txheem hardening tiav lawm, lub plhaub yog rhuab, vim hais tias cov blocks melts thiab ntws tawm, thaum lub pwm tseem tshuav thiab siv tau los nchuav hlau rau hauv nws.

Reusable pwm

Casting pwm, uas yog reusable nyob rau hauv cov nqe lus ntawm lawv siv, yog tsim los ntawm cov ntaub ntawv xws li cam khwb cia hlau, tooj liab, tooj dag los yog hlau resistant. Reusable pwm tau pom lawv daim ntawv thov nyob rau hauv non-ferrous hlau casting. Lawv yog siv rau casting zinc, tooj dag lossis aluminium alloys. Ntxiv rau lawv, cov pwm ua los ntawm cov khoom siv graphite kuj tseem siv tau. Xws li blocks tiv taus txog li ob peb puas castings. Cov txheej txheem ntawm kev tsim pwm los ntawm graphite yog ua los ntawm kev ua haujlwm ntawm cov khoom siv. Feem ntau, qhov tsim ntawm daim ntawv no muaj ob peb qhov chaw uas tau muab khi ua ke. Qhov qhib ntawm cov pwm no tsuas yog lub qhov uas cov yaj tau nchuav.

Moulds

hais lusntau cov pwm siv rau casting, pwm kuj tuaj yeem txawv. Cov no yog cov pwm qhib, uas qhov ntws ntawm cov hlau molten yog nqa los ntawm lub ntiajteb txawj nqus. Feem ntau, kev tsim cov pwm pwm yog ua los ntawm cov hlau cam khwb cia. Txawm li cas los xij, koj yuav tsum paub tias thaum nrum hlau rau hauv pwm, qee cov kev cai yuav tsum tau ua nruj me ntsis thiab qee yam nta yuav tsum raug coj mus rau hauv tus account.

• Nws yog ib qho tsim nyog yuav tsum tau ua tib zoo saib xyuas qhov huv ntawm pwm ua ntej txhua theem tom ntej ntawm kev nchuav hlau.
• Nws yog ib qho tsim nyog los tiv thaiv kev tawg ntawm cov hlau ntawm phab ntsa ntawm pwm thaum nws nchuav rau hauv.

Tom qab txhua txheej txheem casting, pwm raug ntxuav, thiab molding cov xim tsis-stick yog ib txwm siv rau sab hauv. Cov pwm tuaj yeem tuav txog 100 castings ua ntej yuav siv tsis tau.

Cov Khoom Siv Tsim

Cov khoom siv los ua cov pwm yog hu ua molding.

Txhawm rau tsim cov pwm siv ib zaug, yuav tsum tau saib xyuas kom ntseeg tau tias cov khoom ua tau raws li qhov yuav tsum tau muaj xws li lub zog, tsis kam mus rau qhov cuam tshuam zoo rau cov pwm, thiab muaj peev xwm tiv taus lub zog hydrostatic los ntawm cov hlau nchuav..

Yuav ua kom cov pwm rau kev siv rov qab siv dua, nws yog qhov yuav tsum tau ua kom muaj kev xav tau ntau dua ntawm cov khoom raws li nws lub zog. Txawm li cas los xij, nws yog ib qho tseem ceeb kom nkag siab tias nrog tag nrho cov kev cai uas siv rau cov ntaub ntawv no, lawv yuav tsum muaj tus nqi tsim nyog. Lwm yamcov khoom tsim nyob rau hauv cov ntaub ntawv zoo li no yuav muaj tus nqi kawg siab heev. Thiab tus nqi muag yuav ntau dua.