Pob zeb tawg (pob txha, tawg)
Yog vim li cas:
1. Mechanical stress thiab vibration:
Kev teeb tsa nruj heev: Thaum lub tshuab hluav taws xob hauv ob sab phlu lossis tus pas nrig nws tus kheej raug thermal expansion, tsis muaj qhov tshwj xeeb rau kev nthuav dav, ua rau tus pas nrig raug nyem thiab tawg.
Kev co hnyav: Lub workpiece sib tsoo thaum thauj khoom tawm ntawm lub cub tawg, lossis qhov kev vibration ntawm lub cub tawg nws tus kheej raug xa mus rau tus pas nrig.
2. Thermal stress impact:
Kev hloov pauv kub ceev heev: ceev ceev cua txias thiab cua sov ua rau qhov kub thiab txias gradient nyob rau hauv lub pas nrig silicon carbide, tshaj nws cov thermal shock resistance txwv thiab ua rau tawg.
3. Kev ua tsis zoo sib xws:
Thaum siv ntau cov ceg ntoo ua ke, qhov sib txawv tseem ceeb hauv qhov tseem ceeb ntawm kev tiv thaiv tuaj yeem ua rau ib ceg ntoo uas muaj peev xwm ua tau raws li qhov tseeb ntawm nws lub zog tsim, ua rau overheating, accelerated aging, thiab muaj kev cuam tshuam rau pob txha.
4. Kev laus thiab embrittlement:
Tom qab siv sij hawm ntev -, silicon carbide pas nrig undergoes oxidation hnyav, ua rau cov cua sov ua rau nyias nyias thiab nkig, nrog ib tug loj npaum li cas ntawm cov neeg kho tshuab zog. Nws kuj tseem ua rau tawg txawm tias ua haujlwm li qub.
Cov lus qhia rau kev txhim kho:
1.Kev txhim kho kom raug: Thaum lub sij hawm installation, ib qho mos mos ceramic fiber gasket yuav tsum tau muab tso rau ntawm qhov kawg txias kom paub meej tias tus pas nrig tuaj yeem nthuav dav thiab cog lus ywj pheej nyob rau hauv cov kev taw qhia axial nyob rau hauv lub qhov cub phab ntsa. Nws yuav tsum tsis txhob rigidly kho.
2.Standardize cov txheej txheem ua haujlwm:
Tsim thiab nruj me ntsis siv lub "kub nce thiab poob nkhaus", tshwj xeeb tshaj yog nyob rau hauv lub rhiab kub ntau yam hauv qab no 800℃thiab siab tshaj 1200 degree, kom qeeb tus nqi.
3.Tsis txhob tso cov khoom ua haujlwm txias thiab ntub dej ncaj qha rau hauv qhov siab -kub rauv chamber.
4.Optimization ntawm kev xaiv thiab kev sib tw:
Xaiv cov pas nrig uas tsim nyog raws li qhov kub ntawm qhov cub, huab cua, thiab lub zog ntom ntom (xws li, cov pas nrig tuab yog qhov zoo dua rau thermal shock resistance).
5.Nyob rau tib lub voj voog (theem), qhov sib txawv ntawm qhov sib txawv ntawm cov kab sib txuas yuav tsum tau tswj tsis pub dhau ± 5%, thiab nws yog qhov zoo tshaj plaws los siv cov khoom ntawm tib batch.
6.Txhim kho thiab tshuaj xyuas:
- Tsis tu ncua (piv txwv li txhua hli) tshuaj xyuas qhov chaw oxidation thiab ncaj ntawm tus pas nrig.
- Ua tib zoo saib xyuas cov pas nrig uas tau siv ntev ntev (nrog kev tiv thaiv nce siab tshaj 30% ntawm tus nqi pib), thiab hloov lawv raws sijhawm thiab npaj tau.
