Cov txheej txheem tsim khoom ntawm silicon carbide rods (SiC cua sov cov ntsiab lus) suav nrog ntau qhov txuas tseem ceeb uas yuav tsum tau tswj nruj me ntsis kom ntseeg tau cov khoom ua tau zoo thiab kev ntseeg tau. Cov hauv qab no yog cov ntsiab lus tseem ceeb tswj thiab tswj cov ntsiab lus ntawm cov txheej txheem ntws:
1. Raw khoom npaj thiab proportioning
Cov ntsiab lus tseem ceeb:
● Purity thiab particle loj ntawm silicon carbide (SiC) hmoov: High purity SiC hmoov yog lub hauv paus, thiab particle loj tis ncaj qha cuam tshuam rau sintering ceev thiab conductivity.
● Kev siv cov binders tshwj xeeb thiab cov khoom siv ntxiv tuaj yeem ua kom cov khoom sib xws ntawm cov khoom siv raw dispersion thiab tswj hluav taws xob tiv thaiv.
Tswj ntsuas:
● Raw khoom tuaj soj ntsuam (purity, particle loj, impurity cov ntsiab lus).
● Kev siv cov txheej txheem ntub dej lossis qhuav sib xyaw kom ntseeg tau tias muaj kev sib haum xeeb.
● Txhim kho qhov sib piv los ntawm kev sim me me -.
2. Moulding txheej txheem
Cov ntsiab lus tseem ceeb:
Forming density and uniformity: directly affecting the structural strength and thermal uniformity after sintering
● Lub molding siab tus nqi yuav tsum siab tshaj 16MPA, feem ntau ntawm 17-18MPA. Yog tias tus nqi siab qis dhau lawm, qhov ceev ntawm silicon carbide pas nrig yog qhov tsawg thiab yooj yim rau kev khoov, thaum lub siab tus nqi siab dhau lawm, nws yooj yim rau kev puas tsuaj pwm.
● Saib xyuas qhov flatness thiab xyuas seb qhov nruab nrab ntawm lub qhov pas nrig yog qhov nruab nrab thiab puas muaj qhov sib txawv.
● Kev ntsuam xyuas qhov ntom ntom: Yog tias qhov ntom ntawm silicon carbide pas nrig tsis ua raws li qhov yuav tsum tau ua, cov silicon carbide pas nrig yog feem ntau txiav. Tsis tas li ntawd, qhov ceev tuaj yeem txheeb xyuas los ntawm tus naj npawb ntawm cov pores ntawm lub ntsis ntawm tus pas. Tus naj npawb ntawm cov pores ntau dua qhia qhov qis dua, thaum tus lej qis dua qhia tias qhov ntom ntom dua.
Tswj ntsuas:
● Tswj molding siab, ceev, thiab pwm tsim.
● Siv lub ntsuas qhov ntom ntom los saib xyuas qhov sib xws ntawm lub cev ntsuab ntom ntom.
● Tsis txhob delamination lossis cov kab nrib pleb sab hauv.
3. Sintering txheej txheem
Cov ntsiab lus tseem ceeb:
● Sintering kub thiab cua: Nws yuav tsum tau nqa tawm nyob rau hauv ib tug inert cua (xws li argon) los yog nqus tsev vacuum, thiab qhov kub thiab txias feem ntau yog siab tshaj 2000 degree.
● Cua sov / txias npaum li cas: nrawm dhau tuaj yeem ua rau tawg, thaum qeeb dhau tuaj yeem cuam tshuam rau kev tsim khoom.
● Kev ntsuas kev tiv thaiv: Sijhawm kuaj xyuas tus nqi tiv thaiv ntawm sintered silicon carbide pas nrig kom pom tias nws ua tau raws li qhov yuav tsum tau muaj tus nqi tiv thaiv.
Tswj ntsuas:
● Siv lub siab -kub sintering rauv kom tswj tau qhov kub ntawm cheeb tsam nkhaus.
● Saib xyuas qhov purity ntawm huab cua.
● Tshawb xyuas qhov porosity, ntom, thiab microstructure los ntawm cov qauv sintered.
4. Kev tshuaj xyuas cov pas nrig tiav
Cov ntsiab lus tseem ceeb:
● Ntsuam xyuas qhov ua tau zoo ntawm qhov ua tiav ntawm silicon carbide pas nrig tom qab vuam kom pom tias nws tsis kam ua raws li qhov yuav tsum tau ua.
● Tshawb xyuas qhov tshwm sim ntawm qhov ua tiav ntawm silicon carbide pas nrig rau qhov tsis xws luag, thiab ntsuas seb qhov cua sov kawg thiab pas nrig txoj kab uas hla raws li qhov yuav tsum tau ua.
● Kev soj ntsuam kuaj xyuas seb qhov ceev ntawm silicon carbide rods ua tau raws li qhov yuav tsum tau ua.
Xaus:
Lub hauv paus ntawm silicon carbide qws ntau lawm nyob rau hauv "homogenization ntawm raw cov ntaub ntawv, precision sintering, thiab standardization ntawm kev xeem". Los ntawm kev saib xyuas tag nrho cov txheej txheem tsim khoom thiab ua cov txheej txheem nruj, cov khoom sib xws thiab kev ntseeg tau tuaj yeem txhim kho.
