Kev tsim cov txheej txheem ntawm transformer porcelain bushings yog txheej txheem kev sib koom ua ke ntawm cov ntaub ntawv science, precision molding, thiab nruj kev ntsuam xyuas, tsim los xyuas kom meej ntev -lub sij hawm txhim khu kev qha kev lag luam nyob rau hauv high voltage, high kub, thiab complex ib puag ncig.
Raw Material Preparation and Material Selection Porcelain bushings yog ua los ntawm siab -cov ntaub ntawv ceramic. Cov feem ntau muaj xws li:
Alumina (Al₂O₃): Muab cov khoom siv zoo heev thiab thermal stability, dav siv hauv nruab nrab thiab qis voltage bushings.
Zirconium oxide (ZrO₂): Muaj lub siab tawv thiab hnav tsis kam, haum rau cov ntawv thov uas yuav tsum muaj kev cuam tshuam siab thiab ua haujlwm qaug zog.
Silicon oxide (SiO₂): Txhim kho tshuaj stability thiab hluav taws xob rwb thaiv tsev.
Rau siab- cov khoom siv hluav taws xob, 8 mol% Y₂O₃ kuj tseem siv los ua kom ruaj khov ZrO₂ hmoov txhawm rau txhim kho thermal stability thiab tiv thaiv- kev laus muaj peev xwm.
Moulding txheej txheem: Xaiv cov cuab yeej tsim nyog raws li cov khoom Specifications
1. Isostatic Pressing (Mainstream txheej txheem)
Tam sim no, siab -voltage porcelain bushings feem ntau siv tshuab txias isostatic pressing tshuab. Tom qab thauj cov hmoov ceramic rau hauv cov pwm elastic, lub siab tsis sib xws ntawm 100-200 MPa yog siv rau hauv cov kua nruab nrab, nqa qhov ntom ntom ntawm qhov khoob ze rau tus nqi theoretical, txhim kho cov khoom sib xws thiab lub zog txhua yam. Cov txheej txheem no yog tsim rau precision bushings xav tau kev ua haujlwm siab, xws li porcelain bushings rau ultra-high voltage transformers.
2. Wet Bonding (Rau Loj Porcelain Bushings)
Rau cov porcelain loj bushings nrog voltage theem ntawm 110-330 kV, segmented extrusion ntawm cov av nplaum dawb paug raws li kev sib txuas yog siv. Cov kauj ruam tshwj xeeb yog raws li nram no:
Extrude av nplaum dawb nrog cov dej noo ntawm 16.5% -18.2% siv lub tshuab nqus tsev av tov khoom;
Cua qhuav kom cov dej noo ntawm 15.2% -17%, ces refine;
Siv 2% sodium carbonate aqueous tov raws li ib tug binder thiab koom nyob rau hauv lub blanks ntawm ib tug sib txuas tshuab ntawm ib tug ceev ntawm 50-80 r / min, tshem tawm cov pa npuas thiab av nplaum ntau dhau;
Thaum kawg, ua kom tiav lub qhov sab hauv kom zoo dua.
Txoj kev no tuaj yeem daws tau qhov teeb meem ntawm qhov nyuaj molding ntawm loj -size ceramic tes tsho.
3. Qhuav nias thiab txhaj tshuaj molding (Tshwj xeeb daim ntawv thov)
Dry Pressing: Haum rau cov duab yooj yim thiab cov khoom loj ntawm cov khoom siv tubular, nrog kev ua haujlwm siab thiab qis qis.
Txhaj Molding: Siv rau me me precision ceramic raj, xws li fiber ntau optic connector tes tsho los yog kho hniav implant abutments, ua tiav micron - theem precision.
4. 3D Printing (Tshaj Tawm Tshiab)
Photopolymerization 3D luam ntawv thev naus laus zis tau maj mam siv rau kev tsim cov khoom siv hluav taws xob, ua tiav qhov tseeb ntawm ± 20μm, haum rau cov txheej txheem nyuaj xws li siab - kub resistant nozzles.
