Silicon Nitride Rollers

Silicon nitride tau xaiv ntau yam ntawm lwm cov txuj ci zoo vim tias nws lub zog siab thiab tawv, tsis muaj porosity, siab pob txha tawv, thiab muaj peev xwm tiv taus Hertzian siab thaum lub sij hawm dov kev sib cuag nrog qaug zog tsis ua haujlwm piv rau hlau. Kev sib piv ntawm cov khoom siv yam ntxwv ntawm cov hlau cam sib dhos ua ke (nqa cov hlau thiab tooj dag) rau Si3N4 ceramics qhia tias silicon nitride ceramic lub tog raj kheej ua kom nrawm dua vim nws qhov ntom. Si3N4 ceramic yog qhov hnyav dua li hlau, muaj cov cua sov nthuav dav qis dua, thiab ua raws li hluav taws xob rwb thaiv tsev. Ib qho ntxiv, silicon nitride cylindrical roller muaj qhov qis coefficient ntawm kev sib txhuam thaum zawv zawg tiv thaiv cov hlau, tsis zoo li cov hlau/hlau lossis hlau/tooj liab, thiab tsis qhia microwelding thaum nyob hauv kev sib cuag nrog cov hlau (ib qho ua rau galling thiab scuffing hauv hlau tivthaiv lubricated hnav). Tsis tas li ntawd, Si3N4 lub tog raj kheej yog qhov tsis tshua muaj kev cuam tshuam rau kev ua haujlwm tsis ua haujlwm. Kev sib txhuam coefficient ntawm silicon nitride rollers tseem tsis tu ncua nyob rau qhov qhuav/dej nyab (lub pob ntawm kev sib cuag tribometer ncaj).

Cov khoom sib piv ntawm Si3N4 rau Hlau thiab Bronze

COV NTAUB NTAWV KHO MOB	UNIT	ROLLER STEEL	BRONZE	SILICON NITRIDE Cov
Ceev	g/cm cm³	7.8	~8.7-9.3	3.20-3.30
Elastic Modulus	GPa	210	~72-93	290-320
Poisson Piv	%	0.28	-	0
Hardness HK0.5	kg/hli²	~700	-	& gt; 1,500
Hardness HRc	-	60	& lt; 0.9 (tawm nplai)	[NPE] gt; 75
Ntim Resistivity	hmo · cm	60·10^-6	10-20·10^-6	& gt; 1 · 10¹²
Thermal Expansion Coefficient	10^-6/℃^–1	10.9	6·10^-6	3.2

Cov Khoom Khoom ntawm Silicon Nitride

ITEM	UNIT	SILICON NITRIDE\|GPSN
Cov Ntsiab Lus Tseem Ceeb	-	Si₃N₄& gt; 95%
Xim	-	Dub, Tsaus Grey
Ceev	g/cm cm³	3.20-3.30
Vickers Hardness	Gpa	15
Lub zog muaj zog	Mpa	580
Nyuaj zog	Mpa	2,200
Hluav Taws Xob Tiv Thaiv	hmo · cm	& gt; 10¹²
Dielectric Zog	KV/hli	19
Dielectric tsis tu ncua	1 MHz	9.6
Kev Kub Kub	W/m.K	27
Siv Siab Tshaj.	℃ / ℉	1,200 / 2,190
Tsis kam mus rau Thermal Shock	△T(℃)	750
Coefficient ntawm Thermal Expansion (25 - 1,000 ℃)	10^-6/K	3.0 - 4.0

Nco tseg: Txawm hais tias peb tsis muaj laj thawj tsis ntseeg qhov tseeb ntawm cov ntaub ntawv nthuav tawm, cov ntaub ntawv no yog muab rau kev sib piv nkaus xwb. Cov cuab yeej tseeb yuav txawv nyob ntawm qhov tsim khoom tsim thiab tsim ib feem, thiab qee zaum tuaj yeem ua kom tau raws li qhov xav tau tshwj xeeb.

Cim npe nrov: silicon nitride ceramic lub tog raj kheej, Tuam Tshoj, cov chaw muag khoom, chaw tsim khoom, lub Hoobkas

Khoom

Silicon Nitride Ceramic Lub Tog Raj Kheej