Isostatic graphite, tseem hu ua isostatically tsim graphite, hais txog ib txoj kev uas sib tov ntawm raw cov ntaub ntawv yog compressed rau hauv cov duab plaub los yog round blocks nyob rau hauv ib tug system hu ua txias isostatic pressing (CIP). Txias isostatic nias yog cov txheej txheem ua cov khoom siv uas hloov pauv hauv qhov siab ntawm lub kaw lus, cov kua dej tsis sib haum tau xa mus rau txhua qhov ntawm cov kua dej, suav nrog qhov chaw ntawm nws lub thawv.
Piv rau lwm cov txheej txheem xws li extrusion thiab vibration forming, CIP technology tsim cov isotropic hluavtaws graphite tshaj plaws.Isostatic graphitekuj feem ntau muaj qhov tsawg tshaj plaws ntawm cov khoom siv graphite (kwv yees li 20 microns).
Kev tsim cov txheej txheem ntawm isostatic graphite
Isostatic nias yog txheej txheem ntau theem uas tso cai rau kom tau txais cov blocks tsis tshua muaj siab nrog lub cev tsis tu ncua hauv txhua qhov chaw thiab cov ntsiab lus.
Cov yam ntxwv ntawm isostatic graphite:
• Kub kub heev thiab tshuaj tiv thaiv
• Zoo heev thermal shock kuj
• Muaj hluav taws xob conductivity
• Siab thermal conductivity
• Ua kom muaj zog nrog qhov kub thiab txias
• Yooj yim rau txheej txheem
• Muaj peev xwm ua tau nyob rau hauv siab purity (<5 ppm)
Manufacturing ntawmisostatic graphite
1. Coke
Coke yog ib yam khoom uas tsim nyob rau hauv cov roj refineries los ntawm cua sov thee (600-1200 ° C). Cov txheej txheem yog ua nyob rau hauv tshwj xeeb tsim coke ncu siv combustion gases thiab ib tug txwv tsis pub ntawm oxygen. Nws muaj tus nqi calorific ntau dua li cov pa fossil coal.
2. Sib tsoo
Tom qab kuaj xyuas cov khoom siv raw, nws yog crushed mus rau ib qho particle loj. Cov tshuab tshwj xeeb rau kev sib tsoo cov khoom hloov cov hmoov zoo heev tau txais rau hauv cov hnab tshwj xeeb thiab faib lawv raws li qhov loj me.
Suab
Qhov no yog los ntawm cov khoom ntawm coking ntawm cov thee tawv, piv txwv li roasting ntawm 1000-1200 ° C tsis muaj cua. Pitch yog cov kua dej ntom ntom.
3. Kneading
Tom qab cov txheej txheem coke sib tsoo tiav, nws yog tov nrog suab. Ob qho khoom siv raw yog sib xyaw ntawm qhov kub thiab txias kom cov thee tuaj yeem yaj thiab ua ke nrog cov coke hais.
4. Thib ob pulverization
Tom qab cov txheej txheem sib tov, cov pa roj carbon me me tau tsim, uas yuav tsum tau rov qab los rau cov khoom zoo heev.
5. Isostatic nias
Thaum cov khoom zoo ntawm qhov xav tau qhov loj yog npaj, nias theem ua raws li. Cov hmoov tau muab tso rau hauv cov pwm loj, qhov ntev ntawm qhov sib xws rau qhov kawg ntawm qhov loj. Cov pa roj carbon hmoov nyob rau hauv cov pwm yog raug rau siab siab (ntau tshaj 150 MPa), uas siv tib lub zog thiab siab rau cov hais, npaj lawv symmetrically thiab yog li sib npaug. Txoj kev no tso cai rau kom tau txais cov graphite tib yam thoob plaws hauv pwm.
6. Carbonization
Cov theem tom ntej thiab ntev tshaj plaws (2-3 lub hlis) yog ci hauv qhov cub. Cov khoom siv isostatically nias yog muab tso rau hauv lub qhov cub loj, qhov twg qhov kub nce mus txog 1000 ° C. Txhawm rau kom tsis txhob muaj qhov tsis xws luag lossis tawg, qhov kub thiab txias hauv qhov cub yog tswj hwm tas li. Tom qab ci ua tiav, qhov thaiv mus txog qhov xav tau hardness.
7. Pitch Impregnation
Nyob rau theem no, lub thaiv tuaj yeem impregnated nrog suab thiab hlawv dua kom txo nws qhov porosity. Impregnation feem ntau yog nqa tawm nrog lub suab nrog qis viscosity dua li lub suab siv los ua cov ntawv khi. Qhov qis viscosity yuav tsum tau sau cov qhov khoob kom raug.
8. Graphitization
Nyob rau theem no, cov matrix ntawm carbon atoms tau raug txiav txim thiab cov txheej txheem hloov pauv ntawm cov pa roj carbon rau graphite hu ua graphitization. Graphitization yog qhov cua sov ntawm qhov tsim thaiv kom kub txog li 3000 ° C. Tom qab graphitization, qhov ceev, hluav taws xob conductivity, thermal conductivity thiab corrosion kuj yog ho txhim kho, thiab kev ua tau zoo kuj tseem txhim kho.
9. Graphite khoom
Tom qab graphitization, tag nrho cov khoom ntawm graphite yuav tsum tau kuaj xyuas - suav nrog cov nplej loj, qhov ntom ntom, khoov thiab lub zog compressive.
10. Kev ua haujlwm
Thaum cov khoom tau npaj tiav thiab kuaj xyuas, nws tuaj yeem tsim tau raws li cov neeg siv khoom cov ntaub ntawv.
11. Kev huv huv
Yog hais tias isostatic graphite siv nyob rau hauv semiconductor, ib leeg siv lead ua silicon thiab atomic zog industries, siab purity yuav tsum tau, yog li tag nrho cov impurities yuav tsum tau muab tshem tawm los ntawm tshuaj txoj kev. Txoj kev coj ua kom tshem tawm graphite impurities yog muab cov khoom graphitized rau hauv cov roj halogen thiab ua kom kub txog li 2000 ° C.
12. Kev kho deg
Nyob ntawm daim ntawv thov ntawm cov graphite, nws qhov chaw tuaj yeem ua rau hauv av thiab muaj qhov chaw du.
13. Kev xa khoom
Tom qab ua tiav tiav, cov ntsiab lus graphite tiav tau ntim thiab xa mus rau cov neeg siv khoom.
Yog xav paub ntxiv txog qhov ntau thiab tsawg, qib isostatic graphite thiab cov nqi, thov koj xav tiv tauj peb. Peb cov engineers yuav zoo siab los qhia koj txog cov ntaub ntawv tsim nyog thiab teb tag nrho koj cov lus nug.
Tel: +86-13373889683
WhatsApp: +86-15957878134
Email: sales01@semi-cera.com
Post lub sij hawm: Sep-14-2024