Crucible thiab Sagger

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

Lub crucible yog xav tau los tiv thaiv qhov kub siab tshaj plaws hauv cov hlau melting. Cov khoom siv crucible yuav tsum muaj qhov melting point ntau dua li cov hlau uas tau yaj thiab nws yuav tsum muaj lub zog zoo txawm tias kub kub.

High-temperature silicon carbide crucible yog ib qho zoo tagnrho cov rooj tog zaum rau industrial furnaces, haum rau sintering thiab smelting ntawm ntau yam khoom, thiab yog dav siv nyob rau hauv tshuaj, roj av, ib puag ncig tiv thaiv thiab lwm yam teb. Silicon carbide yog cov tshuaj tseem ceeb ntawm silicon carbide germanium, uas muaj cov yam ntxwv siab hardness. Lub hardness ntawm silicon carbide crucible yog nruab nrab ntawm corundum thiab pob zeb diamond, nws cov neeg kho tshuab lub zog yog siab dua li ntawm corundum, nrog high kub hloov pauv tus nqi, yog li nws yuav txuag tau ntau zog.

RBSiC / SISIC crucible thiab sagger yog qhov sib sib zog nqus phiab ceramic nkoj. Vim hais tias nws yog superior rau glassware nyob rau hauv cov nqe lus ntawm tshav kub tsis kam, nws yog zoo siv thaum cov khoom yog rhuab los ntawm hluav taws. Sagger yog ib qho ntawm cov rooj tog tseem ceeb rau kev hlawv cov plooj (porcelain). Txhua hom porcelain yuav tsum muab tso rau hauv saggers ua ntej thiab tom qab ntawd mus rau hauv qhov cub rau ci.

Silicon carbide melting crucible yog qhov tseem ceeb ntawm cov cuab yeej tshuaj, nws yog ib lub thawv uas tuaj yeem siv rau melting, purification, cua sov thiab cov tshuaj tiv thaiv. Yog li ntau tus qauv thiab qhov ntau thiab tsawg tau suav nrog; tsis muaj kev txwv los ntawm kev tsim khoom, kom muaj nuj nqis lossis cov khoom siv.

Silicon carbide melting crucible yog lub tais sib sib zog nqus zoo li ceramic ntim uas yog siv dav hauv kev lag luam metallurgy. Thaum cov khib nyiab raug cua sov los ntawm qhov hluav taws kub loj, yuav tsum muaj lub thawv kom zoo. Nws yog ib qho tsim nyog yuav tsum tau siv lub crucible thaum cua sov vim tias nws tuaj yeem tiv taus qhov kub siab dua li iav iav thiab tseem ua kom lub purity ntawm cov pa phem. Lub silicon carbide melting crucible tsis tuaj yeem overfilled los ntawm cov ntsiab lus molten ua rau cov ntaub ntawv rhuab tuaj yeem boiled thiab txau tawm. Tsis tas li ntawd, nws tseem ceeb heev uas yuav tsum ua kom cov huab cua tsis muaj zog rau kev ua kom muaj oxidation tshwm sim.

Daim ntawv ceeb toom:
1. Khaws kom qhuav thiab huv si. Yuav tsum tau rhuab mus rau 500 ℃ maj mam ua ntej siv. Khaws tag nrho cov crucibles nyob rau hauv ib qho chaw qhuav. Cov dej noo tuaj yeem ua rau lub crucible tawg ntawm cua sov. Yog tias nws tau khaws cia rau ib ntus nws yog qhov zoo tshaj kom rov ua qhov tempering. Silicon carbide crucibles yog qhov tsawg tshaj plaws uas yuav nqus dej hauv qhov chaw cia thiab feem ntau tsis tas yuav tsum tau tempered ua ntej siv. Nws yog ib lub tswv yim zoo los tua hluav taws tshiab rau lub tshav kub kub ua ntej nws thawj zaug siv los tsav tawm thiab ua kom tawv nqaij ntawm lub Hoobkas coatings thiab binders.
2. Muab cov ntaub ntawv tso rau hauv silicon carbide melting crucible raws li nws qhov ntim thiab khaws qhov chaw kom zoo kom tsis txhob thermal expansion puas. Cov khoom yuav tsum tau muab tso rau hauv lub crucible heev xoob. TSIS TXHOB "pob" lub crucible, vim cov khoom yuav nthuav dav ntawm cov cua sov thiab tuaj yeem tawg cov ceramic. Thaum cov khoom no tau yaj mus rau hauv "pob taws", ua tib zoo thauj khoom ntau ntxiv rau hauv lub pas dej kom yaj. (CEEB TOOM: Yog tias muaj cov dej noo nyob rau ntawm cov khoom tshiab, qhov EXPLOSION yuav tshwm sim). Ib zaug ntxiv, tsis txhob nruj nreem ntim rau hauv cov hlau. Khaws cov khoom noj rau hauv cov yaj kom txog thaum cov khoom yuav tsum tau yaj.
3. Tag nrho cov crucibles yuav tsum tau ua nrog cov khoom siv kom zoo (lifting tool). Cov hlua tsis raug tuaj yeem ua rau muaj kev puas tsuaj lossis ua tsis tiav ntawm lub crucible ntawm lub sijhawm phem tshaj plaws.
4. Tsis txhob muaj qhov hluav taws kub oxidized uas muaj zog ncaj qha mus rau lub crucible. Nws yuav siv sij hawm luv vim yog cov khoom siv oxidation.
5. Tsis txhob tso cov rhuab silicon carbide melting crucible rau ntawm cov hlau txias los yog ntoo nto tam sim ntawd. Qhov txias tam sim ntawd yuav ua rau tawg lossis tawg thiab ib qho ntoo saum npoo yuav ua rau hluav taws. Thov tso nws rau ntawm lub pob zeb refractory los yog phaj thiab cia nws txias kom zoo.