Installation thiab fixation ntawm crucibles

Installation thiab fixation ntawm crucibles

(1) Txhawm rau nruab ib lub crucible rau cov roj los yog roj tua hluav taws, ua ntej tso lub crucible rau ntawm lub hauv paus, khaws ib qho nyiaj ntawm crucible expansion qhov chaw nruab nrab ntawm lub crucible thiab sab saum toj ntawm lub cub tawg, thiab kho nws nrog cov ntaub ntawv xws li ntoo. blocks thiab cardboard. Kho txoj hauj lwm ntawm lub burner thiab nozzle kom haum cov nplaim nrog lub combustion chamber, tsis ncaj qha nrog rau hauv qab ntawm lub crucible;

(2) Thaum txhim kho lub crucible rau lub cub tawg, kev txhawb nqa cib yuav tsum tau siv los kho lub crucible ntawm ob sab ntawm lub ncuav nozzle kom tsis txhob wedging lub crucible nruj nreem. Nyob rau tib lub sijhawm, cov ntaub ntawv xws li 3-4 mm cardboard yuav tsum muab tso rau nruab nrab ntawm cov cib txhawb nqa thiab cov crucible ua qhov chaw ua ntej nthuav dav rau lub crucible;

(3) Lub crucible rau kev txhim kho qhov cub hluav taws xob yuav tsum tau muab tso rau hauv nruab nrab ntawm qhov cub hluav taws xob. Hauv qab ntawm lub crucible yuav tsum siab tshaj cov kab hauv qab ntawm cov khoom cua sov, thiab cov paj rwb rwb thaiv tsev yuav tsum tau siv los khi rau saum thiab nruab nrab ntawm cov crucibles.

(4) Nruab ib lub crucible rau lub qhov cub induction kom ntseeg tau tias nws tau muab tso rau hauv qhov chaw ntawm lub induction kauj kom tiv thaiv lub zos overheating thiab tawg ntawm lub crucible.

Preheating / Siv lub crucible kom raug rau thawj zaug tuaj yeem ua rau nws lub neej ua haujlwm ntev.

(1) Raws li ntau hom crucible furnaces, thaum siv lub crucible thawj zaug yam tsis tau ntxiv cov ntaub ntawv, preheat lub crucible rau ib ncig ntawm 200 degree rau 60-120 feeb thiab qhuav rau 60 feeb. Lub hom phiaj yog kom evaporate cov dej noo absorbed ntawm qhov chaw ntawm lub crucible. Tiv thaiv kom tawg thaum pib siv.

(2) Tom qab preheating, lub crucible yuav tsum tau rhuab mus rau 800 degree (kwv yees li 2 teev) kom sai li sai tau, thiab cia sov rau 20-30 feeb ua ntej yuav tsa los yog txo mus rau qhov chaw ua hauj lwm kub. Lub hom phiaj yog kom sai dhau los ntawm qhov kub thiab txias uas yog oxidation hauv graphite crucibles.

(3) Lub crucible feem ntau tsis tas yuav tsum tau preheated dua tom qab thawj preheating, tshwj tsis yog lub crucible yog dampened dua. Kev saib xyuas yuav tsum tau them rau cov crucibles tshiab thiab crucibles uas tau txias rau lub sijhawm ntev. Silicon carbide graphite crucibles muaj feem cuam tshuam rau kev ntxhov siab yog tias tsis preheated kom zoo.

Rau lub qhov cub muaj peev xwm loj thiab / lossis cov cub tawg nrog cov hluav taws xob siab, cov txheej txheem hauv qab no yuav tsum tau ua raws li kom tsis txhob muaj kev puas tsuaj rau crucible vim thermal shock;

(1) Maj mam ua kom sov lub khoob crucible ntawm qhov cua sov ntawm 200 degree rau 2 teev kom tshem tawm cov dej noo;

(2) Kub lub crucible ntawm tus nqi ntawm 2 teev mus rau 600 degree;

(3) Ua kom sov lub crucible rau 800 degree ntawm qhov cua sov li qub. Lub crucible siv rau aluminium rwb thaiv tsev yuav tsum tau khaws cia ntawm 800 degree rau li 30 mus rau 40 feeb kom tso cai rau cov glaze txheej nyob rau saum npoo ntawm crucible kom tag nrho nws cov hauj lwm.

(4) Tom qab cov kauj ruam saum toj no, lub crucible tuaj yeem muab tso rau hauv kev siv ib txwm muaj, thiab nws tseem yuav tsum tau ua tib zoo saib xyuas cov txheej txheem kev nyab xeeb ntawm crucible thaum siv.

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