Silicon nitride ceramic

Nta

Hauv kev lag luam aluminium, muaj ntau cov txheej txheem thiab cov khoom siv hauv kev thauj mus los thiab kev tswj hwm ntawm molten aluminium, xws li cov pob qij txha, nozzles, tso tsheb hlau luam thiab cov kav dej. Nyob rau hauv cov txheej txheem no, kev siv ntawm Silicon nitride ceramic nrog tsawg thermal conductivity, siab thermal shock resistance, thiab non-stick molten aluminium yog yav tom ntej qauv.

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Khoom cim npe

Khoom siv

● Piv nrog aluminium silicate ceramic fiber, Silicon nitride ceramic muaj zog dua thiab zoo dua cov khoom tsis ntub dej. Thaum siv rau plugs, sprue tubes thiab kub sab saum toj risers hauv kev lag luam foundry, nws muaj kev ntseeg siab dua thiab kev pab lub neej ntev dua.

● Txhua yam ntawm riser raj siv hauv lub ntiajteb txawj nqus casting, sib txawv siab casting thiab tsis tshua muaj siab casting muaj kev xav tau siab ntawm rwb thaiv tsev, thermal shock resistance thiab tsis-wetting khoom. Silicon nitride ceramic yog qhov kev xaiv zoo tshaj plaws hauv feem ntau.

Kev ceev faj rau kev siv

● Lub zog flexural ntawm Silicon nitride ceramic tsuas yog 40-60MPa, thov ua siab ntev thiab ceev faj thaum lub sijhawm teeb tsa kom tsis txhob muaj kev puas tsuaj rau sab nraud.

● Hauv cov ntawv thov uas yuav tsum tau ua kom nruj, qhov hloov pauv me ntsis tuaj yeem ua tib zoo polished nrog cov ntawv xuab zeb lossis cov log abrasive.

● Ua ntej kev teeb tsa, nws raug nquahu kom khaws cov khoom kom tsis txhob ya raws thiab qhuav ua ntej.

Qhov zoo tseem ceeb:

Siab zog thiab hardness: Silicon nitride muaj kev sib xyaw ua ke ntawm lub zog siab thiab hardness, muab kev hnav zoo heev thiab cuam tshuam txawm tias nyob rau hauv huab cua.
Zoo heev Thermal Shock Resistance: Silicon nitride ceramics tuaj yeem tiv taus qhov kub hloov pauv sai yam tsis muaj kev tawg lossis poob kev ncaj ncees, ua rau nws zoo tagnrho rau qhov chaw kub kub, xws li cov cub tawg lossis lub cav.
Superior Kub Resistance: Nrog lub siab melting point thiab muaj peev xwm tswj tau lub zog ntawm qhov kub siab, silicon nitride yog zoo meej rau cov ntawv thov uas yuav tsum tau muaj kev ruaj ntseg nyob rau hauv lub sij hawm ntev nyob rau hauv high kub.
Tsawg Thermal Expansion: Cov khoom siv ceramic no muaj cov thermal expansion coefficient tsawg, uas ua kom muaj qhov ruaj khov ntawm qhov kub thiab txias, txo qhov kev pheej hmoo ntawm thermal deformation.
Zoo tshaj Corrosion Resistance: Silicon nitride tiv taus tshuaj lom neeg, nrog rau cov kua qaub, alkalis, thiab cov hlau molten, ua rau nws tsim nyog rau cov cheeb tsam hnyav.
Lub teeb: Txawm hais tias nws lub zog, silicon nitride kuj sib sib zog nqus piv rau cov hlau, ua rau nws muaj txiaj ntsig zoo hauv kev lag luam xws li aerospace thiab automotive, qhov kev txo qhov hnyav yog qhov tseem ceeb.
Hluav taws xob rwb thaiv tsev: Silicon nitride ceramics muaj cov khoom siv hluav taws xob zoo heev, ua rau lawv tsim nyog rau kev siv hluav taws xob thiab hluav taws xob uas xav tau cov ntaub ntawv nrog ob qho tib si thermal thiab hluav taws xob.
Biocompatibility: Cov ceramic no kuj yog biocompatible, tso cai rau nws siv rau hauv cov khoom siv kho mob, tshwj xeeb tshaj yog nyob rau hauv orthopedic daim ntaub ntawv xws li cog.