Crucible thiab Sagger

Lub crucible yog lub lauj kaub ceramic siv los tuav hlau rau kev yaj hauv lub cub tawg. Qhov no yog lub crucible zoo, qib kev lag luam siv los ntawm kev lag luam foundry lag luam.

Yuav tsum muaj lub crucible thiaj li tiv taus qhov kub thiab txias heev uas ntsib hauv cov hlau yaj. Cov khoom siv crucible yuav tsum muaj qhov melting point siab dua li cov hlau yaj thiab nws yuav tsum muaj lub zog zoo txawm tias thaum dawb kub.

Lub pob zeb silicon carbide kub siab yog lub rooj tog zaum zoo tagnrho rau cov cub tawg hauv kev lag luam, tsim nyog rau kev sintering thiab smelting ntawm ntau yam khoom, thiab siv dav hauv tshuaj lom neeg, roj av, kev tiv thaiv ib puag ncig thiab lwm yam teb. Silicon carbide yog cov khoom siv tshuaj lom neeg tseem ceeb ntawm silicon carbide germanium, uas muaj cov yam ntxwv tawv siab. Lub hardness ntawm silicon carbide crucible yog nruab nrab ntawm corundum thiab pob zeb diamond, nws lub zog kho tshuab siab dua li corundum, nrog rau qhov kub hloov pauv siab, yog li nws tuaj yeem txuag tau ntau lub zog.

RBSiC/SISIC crucible thiab sagger yog lub tais ceramic tob. Vim tias nws zoo dua li cov khoom siv iav hauv kev tiv taus cua sov, nws siv tau zoo thaum cov khoom khov kho raug hluav taws kub. Sagger yog ib qho ntawm cov rooj tog zaum tseem ceeb rau kev hlawv porcelain. Txhua yam porcelain yuav tsum tau muab tso rau hauv saggers ua ntej thiab tom qab ntawd rau hauv lub qhov cub rau ci.

Silicon carbide melting crucible yog qhov tseem ceeb ntawm cov cuab yeej siv tshuaj lom neeg, nws yog ib lub thawv uas siv tau rau kev yaj, kev ntxuav, cua sov thiab kev ua tshuaj. Muaj ntau tus qauv thiab qhov loj me; tsis muaj kev txwv ntawm kev tsim khoom, ntau npaum li cas lossis cov ntaub ntawv.

Lub thawv silicon carbide melting crucible yog lub thawv ceramic zoo li lub tais tob uas siv dav hauv kev lag luam metallurgy. Thaum cov khoom khov kho raug cua sov los ntawm hluav taws loj, yuav tsum muaj lub thawv zoo. Nws yog ib qho tsim nyog siv lub crucible thaum cua sov vim tias nws tuaj yeem tiv taus qhov kub siab dua li cov khoom siv iav thiab tseem ua kom huv si los ntawm kev ua qias tuaj. Lub thawv silicon carbide melting crucible tsis tuaj yeem ntim cov khoom yaj ntau dhau vim tias cov khoom kub yuav raug rhaub thiab txau tawm. Txwv tsis pub, nws tseem ceeb heev kom cov huab cua ncig tau yooj yim rau cov tshuaj tiv thaiv oxidation.

Daim Ntawv Ceeb Toom:
1. Khaws cia kom qhuav thiab huv si. Yuav tsum tau ua kom sov txog 500 ℃ maj mam ua ntej siv. Khaws tag nrho cov crucibles rau hauv qhov chaw qhuav. Cov dej noo tuaj yeem ua rau crucible tawg thaum cua sov. Yog tias nws tau khaws cia rau ib ntus nws yog qhov zoo tshaj plaws los rov ua qhov tempering. Silicon carbide crucibles yog hom tsawg tshaj plaws los nqus dej hauv kev khaws cia thiab feem ntau tsis tas yuav tsum tau tempering ua ntej siv. Nws yog ib lub tswv yim zoo los hlawv lub crucible tshiab rau qhov kub liab ua ntej nws siv thawj zaug kom tsav tawm thiab ua kom cov txheej txheem thiab cov binders ntawm lub Hoobkas tawv.
2. Muab cov khoom siv rau hauv lub silicon carbide melting crucible raws li nws qhov ntim thiab khaws qhov chaw kom zoo kom tsis txhob muaj kev tawg ntawm thermal expansion. Cov khoom siv yuav tsum tau muab tso rau hauv lub crucible HEEV xoob. TSIS TXHOB "ntim" lub crucible, vim tias cov khoom siv yuav nthuav dav thaum cua sov thiab tuaj yeem tawg lub ceramic. Thaum cov khoom siv no tau yaj mus rau hauv "khau", ua tib zoo thauj cov khoom siv ntxiv rau hauv lub pas dej kom yaj. (CEEB TOOM: Yog tias muaj dej noo nyob rau ntawm cov khoom siv tshiab yuav muaj pa tawg). Ib zaug ntxiv, tsis txhob ntim cov hlau nruj nreem. Khaws cov khoom siv rau hauv cov yaj kom txog thaum cov khoom siv tau yaj.
3. Txhua lub crucibles yuav tsum tau siv cov tongs uas haum (cuab yeej tsa). Cov tongs uas tsis haum yuav ua rau lub crucible puas tsuaj lossis ua tsis tau tiav thaum lub sijhawm phem tshaj plaws.
4. Tsis txhob cia hluav taws kub hnyiab ncaj qha rau ntawm lub crucible. Nws yuav ua rau lub sijhawm siv luv dua vim yog qhov oxidation ntawm cov khoom.
5. Tsis txhob muab lub silicon carbide melting crucible uas tau cua sov rau ntawm cov hlau txias lossis ntoo tam sim ntawd. Yog tias txias tam sim ntawd yuav ua rau tawg lossis tawg thiab ntoo yuav ua rau hluav taws kub. Thov tso nws rau ntawm lub cib lossis phaj uas tsis kub thiab cia nws txias li qub.