Plua plav yog ib qho tseem ceeb nyob rau hauv ntau yam kev lag luam ib puag ncig, thiab nws qhov cuam tshuam rau pob zeb diamond tuag - casting pwm yog qhov teeb meem tseem ceeb. Raws li kev ntseeg siab pob zeb diamond tuag - casting pwm tsum, peb tau pom ua ntej ntawm cov teebmeem sib txawv uas cov plua plav tuaj yeem muaj ntawm cov cuab yeej precision. Nyob rau hauv no blog, peb yuav delve rau hauv scientific yam ntawm yuav ua li cas plua plav cuam tshuam nrog pob zeb diamond tuag - casting pwm thiab qhov tshwm sim nws coj.
Lub cev Abrasion
Ib qho tshwm sim tam sim ntawd thiab pom tseeb ntawm cov plua plav ntawm lub pob zeb diamond tuag - casting pwm yog kev puas tsuaj rau lub cev. Cov plua plav, feem ntau yog tsim los ntawm cov ntaub ntawv nyuaj xws li silica, nws yog xim hlau oxides, los yog lwm yam khoom abrasive, tuaj yeem ua tau zoo li cov ntawv xuab zeb me me thaum lawv nkag mus rau hauv pwm. Thaum lub sij hawm tuag - txheej txheem casting, siab - siab ntws ntawm cov hlau molten tuaj yeem nqa cov plua plav no nrog, ua rau lawv khawb tawm tsam pwm kab noj hniav.
Sij hawm dhau mus, qhov kev puas tsuaj no tuaj yeem ua rau maj mam hnav ntawm pwm nto. Cov ntsiab lus zoo thiab du tiav uas yog qhov tseem ceeb rau kev tsim cov siab - zoo castings tuaj yeem cuam tshuam. Piv txwv li, yog tias pwm tsim los tsim cov qauv sib txawv ntawm qhov tuag - cam khwb cia, qhov puas los ntawm cov plua plav tuaj yeem ua rau cov qauv no tsis zoo, ua rau cov khoom tsis zoo. Qhov poob ntawm kev ncaj ncees ntawm qhov chaw tuaj yeem ua rau muaj kev sib txhuam ntawm cov pwm thiab cov cam khwb cia, ua rau nws nyuaj rau eject qhov thiab ua rau muaj kev puas tsuaj thaum lub sij hawm ejection.
Tshuaj Reactions
Plua plav kuj tseem tuaj yeem pib cov tshuaj tiv thaiv rau saum npoo ntawm pob zeb diamond tuag - casting pwm. Qee cov hmoov av tej zaum yuav muaj cov ntsiab lus reactive uas tuaj yeem cuam tshuam nrog cov khoom pwm nyob rau hauv qhov siab - qhov kub thiab txias ntawm qhov tuag - txheej txheem casting. Piv txwv li, sulfur - uas muaj plua plav tuaj yeem ua rau cov hlau hauv pwm los ua hlau sulfides. Cov sulfides tuaj yeem ua rau corrosion ntawm pwm nto, ua rau pitting thiab tawg.
Corrosion tsis tsuas yog ua rau lub cev tsis muaj zog ntawm cov pwm tab sis kuj cuam tshuam rau qhov zoo ntawm cov castings. Corroded thaj chaw ntawm cov pwm tuaj yeem ntes cov hlau molten, ua rau muaj qhov tsis xws luag ntawm cov khoom cam khwb cia. Tsis tas li ntawd, cov tshuaj tiv thaiv tuaj yeem hloov pauv cov yam ntxwv ntawm cov pwm, xws li nws cov wettability. Ib qho kev hloov hauv wettability tuaj yeem cuam tshuam qhov ntws ntawm cov hlau molten nyob rau hauv cov pwm kab noj hniav, uas ua rau tsis sib xws filling thiab porosity hauv cov castings.
Kev sib kis ntawm Castings
Plua plav tuaj yeem paug cov hlau molten thaum tuag - txheej txheem casting. Thaum cov hmoov av muaj nyob rau hauv cov pwm kab noj hniav, lawv tuaj yeem muab tso rau hauv cov hlau molten. Cov kab mob no tuaj yeem dhau los ua ib feem ntawm qhov kawg casting, ua rau muaj kev cuam tshuam thiab impurities hauv qhov cam khwb cia. Kev suav nrog tuaj yeem txo cov khoom siv dag zog ntawm cov castings, xws li lawv lub zog, ductility, thiab qaug zog tsis kam.
Piv txwv li, ib tug casting nrog ib tug siab ntawm inclusions tej zaum yuav ua rau kom tawg nyob rau hauv kev ntxhov siab. Tsis tas li ntawd, qhov muaj cov kab mob tuaj yeem cuam tshuam rau qhov zoo nkauj ntawm cov castings, ua rau lawv tsis tshua muaj kev lag luam. Raws li lub pob zeb diamond tuag - casting pwm tsum, peb nkag siab tias cov neeg siv khoom xav tau siab - zoo, tsis xws luag - dawb castings, thiab plua plav - cuam tshuam txog kev sib kis tuaj yeem yog qhov teeb meem loj rau kev ua tiav qhov no.
Kev cuam tshuam rau kev ua kom txias thiab khov
Plua plav tsub zuj zuj ntawm cov pwm nto tuaj yeem cuam tshuam nrog cov txheej txheem txias thiab solidification ntawm cov hlau molten. Cov plua plav txheej ua raws li cov txheej txheem insulating, txo cov cua sov hloov ntawm cov hlau molten mus rau pwm. Qhov no tuaj yeem ua rau qhov tsis sib xws ntawm qhov txias thiab solidification ntawm casting.
Cov cua txias tsis sib xws tuaj yeem ua rau muaj kev ntxhov siab thermal hauv qhov casting, uas tuaj yeem ua rau warping, cracking, los yog distortion ntawm ib feem. Tsis tas li ntawd, qhov qeeb qeeb qeeb vim cov hmoov av txheej tuaj yeem cuam tshuam rau microstructure ntawm casting. Piv txwv li, nws tuaj yeem ua rau tsim cov nplej loj, uas tuaj yeem muaj kev cuam tshuam tsis zoo rau cov khoom siv hluav taws xob ntawm cov casting.
Kev tu thiab Lifespan
Lub xub ntiag ntawm cov plua plav ntawm lub pob zeb diamond tuag - casting pwm ua rau cov zaus thiab qhov nyuaj ntawm kev saib xyuas. Kev tu tsis tu ncua yuav tsum tau tshem tawm cov plua plav thiab tiv thaiv nws cov tsub zuj zuj. Txawm li cas los xij, cov txheej txheem ntxuav nws tus kheej tuaj yeem nyuaj, vim qee cov plua plav tuaj yeem ua kom ruaj khov rau ntawm pwm nto. Cov kev tu nruj heev kuj yuav ua rau cov pwm puas.
Tsis tas li ntawd, cov teebmeem ntawm cov plua plav ntawm cov pwm, xws li kev puas tsuaj thiab corrosion, tuaj yeem txo qhov kev ua neej ntawm pwm. Ib lub pwm uas raug cov hmoov av tas li yuav tsum tau hloov ntau zaus, ua rau cov nqi tsim khoom rau peb cov neeg siv khoom. Raws li tus neeg xa khoom, peb tau cog lus los pab peb cov neeg siv khoom kom ntev lub neej ntawm lawv cov pwm thiab txo cov nqi tu.
Cov tswv yim txo qis
Txhawm rau txo qhov cuam tshuam ntawm plua plav ntawm pob zeb diamond tuag - casting pwm, ob peb lub tswv yim kev txo qis tuaj yeem siv tau. Ua ntej, qhov chaw tsim khoom huv si yog qhov tseem ceeb. Txhim kho qhov cua kom zoo hauv qhov tuag - casting chaw tuaj yeem pab tshem cov plua plav tawm ntawm huab cua, txo cov plua plav tawm ntawm cov pwm. Tsis tas li ntawd, kev siv cov lim cua tuaj yeem ua kom huv si ntxiv thiab tiv thaiv kom tsis txhob muaj plua plav nkag mus rau hauv qhov chaw tsim khoom.
Qhov thib ob, kev saib xyuas tsis tu ncua thiab tshuaj xyuas cov pwm yog qhov tseem ceeb heev. Kev ntxuav cov pwm tom qab siv txhua lub sijhawm lossis ib ntus tuaj yeem tiv thaiv kom tsis txhob muaj plua plav. Tsis yog - abrasive tu txoj kev yuav tsum tau siv kom tsis txhob muaj kev puas tsuaj ntxiv rau pwm nto. Kev tshuaj xyuas tuaj yeem pab txheeb xyuas cov cim ntxov ntawm kev puas tsuaj, corrosion, lossis lwm yam teeb meem ntawm plua plav -, tso cai rau kev kho kom raws sijhawm.
Thaum kawg, cov txheej txheem tiv thaiv tuaj yeem siv rau ntawm pwm nto. Cov txheej txheem no tuaj yeem ua qhov thaiv ntawm cov pwm thiab cov plua plav, txo qhov yuav ua rau muaj kev puas tsuaj thiab tshuaj lom neeg. Qee cov txheej txheem kuj muaj tus kheej - tu cov khoom, uas tuaj yeem pab ua kom cov pwm huv.
Xaus
Raws li lub pob zeb diamond tuag - casting pwm tsum, peb tau zoo - paub txog kev puas tsuaj ntawm plua plav ntawm peb cov khoom. Kev puas tsuaj ntawm lub cev, tshuaj lom neeg, kev sib kis ntawm cov castings, cuam tshuam rau kev ua kom txias thiab khov, thiab txo kev txij nkawm thiab kev ua neej nyob yog txhua yam teeb meem tseem ceeb uas yuav tsum tau daws. Los ntawm kev nkag siab txog cov teebmeem no thiab siv cov tswv yim txo kom tsim nyog, peb tuaj yeem pab peb cov neeg siv khoom kom ntseeg tau qhov zoo ntawm lawv cov khoom tuag - cam khwb cia cov khoom thiab txuas ntxiv lub neej ntawm lawv cov pwm.
Yog tias koj nyob hauv kev ua lag luam rau siab - zoo pob zeb diamond tuag - casting pwm lossis xav tau cov ntaub ntawv ntau ntxiv txog kev tiv thaiv koj cov pwm los ntawm cov teebmeem ntawm cov plua plav, peb caw koj los [pib kev sib cuag rau kev yuav khoom thiab kev sib tham]. Peb muaj ib pab pawg kws tshaj lij uas tuaj yeem muab cov kev daws teeb meem rau koj raws li koj qhov kev xav tau tshwj xeeb.
Txuas
Graphite Saw Hniav
Graphite Gasket
Graphite Gaskets rau Machinery thiab Khoom siv
Cov ntaub ntawv
Campbell, J. (2003). Castings. Butterworth - Heinemann.
-ASM Phau Ntawv Pab Pawg. (2001). ASM Phau Ntawv Qhia, Volume 15: Casting. ASM International.