Tam sim no, graphite pwm tau siv dav hauv cov hauv qab no:
Graphite pwm rau nruam thiab semi-nruam nrum ntawm cov hlau tsis muaj hlau
Nyob rau hauv xyoo tas los no, cov txheej txheem ntau lawm xws li ncaj qha mus txuas ntxiv (lossis ib nrab txuas ntxiv) kev tsim cov pas nrig lossis cov raj los ntawm lub xeev hlau molten tau raug txhawb nqa hauv tsev thiab txawv teb chaws. Txoj kev no tau pib siv tooj liab, tooj liab alloy, txhuas, aluminium alloy thiab lwm yam hauv Suav teb. Artificial graphite yog suav tias yog cov khoom tsim nyog tshaj plaws rau kev nruam casting lossis semi-nruam casting pwm ntawm cov hlau tsis muaj hlau. Kev xyaum ntau lawm ua pov thawj tias vim kev siv graphite pwm, vim tias nws cov thermal conductivity zoo (thermal conductivity txiav txim siab qhov sib zog ceev ntawm cov hlau los yog hlau), kev ua haujlwm zoo ntawm tus kheej ntawm cov pwm thiab lwm yam, tsis yog tsuas yog qhov ceev nrooj yog nce, tab sis kuj vim yog qhov loj me me ntawm cov ingot, du nto, cov qauv siv lead ua tsis sib xws, tuaj yeem ua tiav ncaj qha rau hauv cov txheej txheem tom ntej. Qhov no tsis tsuas yog txhim kho cov txiaj ntsig zoo thiab txo cov khoom seem, tab sis kuj tseem txhim kho cov khoom zoo. Muaj ob hom kev nruam casting txoj kev: ntsug nruam casting txoj kev thiab kab rov tav nruam casting txoj kev.
Pwm rau siab casting
Artificial graphite cov ntaub ntawv tau ntse siv nyob rau hauv siab casting ntawm non-ferrous hlau. Piv txwv li, castings ntawm zinc alloys thiab tooj liab alloys ua los ntawm pwm rau siab casting ua los ntawm cov khoom graphite dag tau siv nyob rau hauv tsheb qhov chaw, thiab lwm yam.
Graphite pwm rau centrifugal casting
Graphite pwm tau ua tiav siv rau centrifugal casting. Hauv Tebchaws Meskas, cov khoom siv dag zog graphite casting pwm nrog phab ntsa tuab ntawm ntau dua 25 hli tau siv los ua centrifuge bronze casings. Txhawm rau tiv thaiv kev kub nyhiab ntawm cov graphite pwm, qee qhov kev tiv thaiv oxidation tuaj yeem siv. Tom qab casting ib tug xov tooj ntawm castings, yog hais tias lub puab nto ntawm lub puab yog pom tias yuav tsum tau hlawv, qhov luaj li cas ntawm lub puab qhov ntawm cov pwm yuav nthuav dav siv los cam khwb cia loj-gauge casings.
Kub Pressing Tuag Pwm
Artificial graphite kub nias tuag yog siv rau lub siab sintering ntawm cemented carbide nrog cov yam ntxwv hauv qab no: Ua ntej, yog tias qhov kub nias nce mus rau 1350-1450 degrees, qhov xav tau chav tsev siab tuaj yeem txo mus rau 67-100 kgf / cm² (uas yog, 1/10 ntawm qhov txias nias); Qhov thib ob, lub zog thiab cua sov yog nqa tawm nyob rau hauv tib txoj kev, thiab lub cev ntom ntom sintered tuaj yeem tau txais tom qab lub sijhawm luv luv ntawm sintering.
Moulds rau iav molding
Vim tias cov khoom siv graphite muaj tshuaj lom neeg ruaj khov, tsis yooj yim rau infiltrated los ntawm molten iav, yuav tsis hloov cov iav muaj pes tsawg leeg, cov khoom siv graphite muaj cov thermal poob siab zoo, thiab qhov loj me me hloov nrog qhov kub thiab txias, yog li nws tau dhau los ua cov khoom pwm indispensable. nyob rau hauv iav manufacturing nyob rau hauv xyoo tas los no, thiab tuaj yeem siv los tsim cov iav raj, lub luj tshib, funnels thiab lwm yam tshwj xeeb-zoo li iav raj mis casting pwm.
Sintering tuag thiab lwm yam pob zeb diamond sintering tuag
Ua kom zoo dua ntawm cov yam ntxwv ntawm cov khoom siv graphite nrog cov thermal deformation tsawg, nws tuaj yeem siv los tsim cov pwm sintering thiab brackets rau transistors, uas tau siv dav, thiab nws tau dhau los ua cov khoom siv tsis tseem ceeb rau kev txhim kho kev lag luam semiconductor. Tsis tas li ntawd, graphite pwm kuj tseem siv rau casting hlau pwm, pwm pwm rau ntau yam hlau tsis-ferrous, casting pwm rau steel casting, casting pwm rau cov hlau uas tsis muaj cua sov (titanium, zirconium, molybdenum, thiab lwm yam), thiab thermite vuam pwm. rau welding rails. Graphite pwm rau kub nias sintered pob zeb diamond cuab yeej plays ob lub luag hauj lwm raws li ib tug cua sov lub sij hawm thiab pwm txhawb nyob rau hauv lub manufacturing txheej txheem ntawm pob zeb diamond cov cuab yeej, thiab qhov zoo ntawm graphite pwm ncaj qha cuam tshuam rau qhov tseeb seem, zoo li thiab cov duab ntawm cov cuab yeej pob zeb diamond. Cov kev xav tau ntawm cov txheej txheem kub nias sintering: qhov kub ncav cuag (1 000± 2) degree, molding siab yog 16 ~ 50 MPa, tuav lub sij hawm yog 15 ~ 30 min, thiab ib puag ncig yog tsis-vacuum. Nyob rau hauv qhov kev ua haujlwm no, graphite pwm ntawm kev tsim thiab cua sov cov ntsiab lus tsis yog tsuas yog yuav tsum muaj conductivity, siab resistivity thiab txaus txhua yam lub zog, tab sis kuj yuav tsum muaj oxidation zoo thiab kev pab lub neej ntev los xyuas kom meej qhov tseeb qhov tseeb thiab kev ua haujlwm zoo ntawm cov cuab yeej pob zeb diamond. Tam sim no, graphite pwm cov ntaub ntawv rau pob zeb diamond cuab yeej tsim nyob rau sab hnub poob tsim lub teb chaws yog cov ntaub ntawv graphite nrog ultra-fine particle qauv, siab purity thiab siab graphitization, uas yuav tsum tau lawv qhov nruab nrab particle loj yuav tsum tsawg tshaj li 15 μm, los yog txawm tsawg tshaj li 10 μm. , thiab qhov nruab nrab pore loj yog tsawg dua 2 μm. Cov graphite pwm ua los ntawm cov roj carbon raw qhov no muaj cov qauv me me, cov npoo tuab, thiab lub neej nruab nrab ntawm 30 ~ 40 zaug. Lub pob zeb diamond pwm yuav tsum muaj cov khoom siv siab tawv, zoo oxidation tsis kam, ua haujlwm siab, thiab lwm yam, thiab kev siv cov khoom siv zoo graphite zoo heev ua rau lub neej ua haujlwm ntawm pwm thiab txhim kho oxidation tsis kam.