Sintered silicon carbide refractories yog txawv ntawm cov ntaub ntawv refractory vim lawv cov muaj pes tsawg leeg thiab cov khoom, teem lawv sib nrug los ntawm lwm yam refractories. Nov yog cov yam ntxwv tseem ceeb thiab cov ntaub ntawv hais txog sintered silicon carbide refractories:
Silicon Carbide Composition: Sintered silicon carbide refractories feem ntau yog tsim los ntawm silicon carbide (SiC). Qhov sib xyaw no, nrog nws qhov tshwj xeeb hardness thiab thermal conductivity, muab cov khoom zoo kawg nkaus refractory.
Exceptional Hardness: Silicon carbide yog ib qho ntawm cov ntaub ntawv nyuaj tshaj plaws paub, ua sintered silicon carbide refractories tiv taus abrasion thiab hnav. Cov cuab yeej no ua rau lawv zoo rau kev siv nyob rau hauv qhov chaw abrasive thiab erosive, xws li hauv kev tuav cov khib nyiab thiab cov zaub mov.
High Thermal Conductivity: Sintered silicon carbide muaj cov thermal conductivity zoo heev, ua rau nws muaj txiaj ntsig zoo rau cov ntawv thov uas hloov pauv hluav taws xob yog qhov tseem ceeb. Nws yog feem ntau siv nyob rau hauv high-temperature ib puag ncig thiab cov khoom uas yuav tsum tau ceev cua sov thiab txias.
Superior Abrasion Resistance: Cov refractories no muaj kev tiv thaiv zoo kawg nkaus rau kev puas tsuaj, ua rau lawv tsim nyog siv rau hauv kev lag luam xws li mining, qhov twg cov ntaub ntawv uas muaj cov khoom abrasive ua tiav.
Corrosion Resistance: Sintered silicon carbide yog cov tshuaj tiv thaiv corrosion, tshwj xeeb tshaj yog nyob rau hauv acidic thiab alkaline ib puag ncig. Cov cuab yeej no tso cai rau nws siv rau hauv cov ntawv thov uas lwm cov ntaub ntawv tuaj yeem ua rau tsis zoo vim muaj tshuaj lom neeg.
Siab Thermal Shock Resistance: Sintered silicon carbide refractories muaj kev tiv thaiv zoo heev rau thermal shock, ua rau lawv haum rau kev hloov kub ceev yam tsis muaj cracking lossis spalling. Cov cuab yeej no muaj txiaj ntsig zoo hauv kev lag luam uas muaj qhov sib txawv ntawm qhov kub thiab txias.
Daim ntaub ntawv: Sintered silicon carbide refractories feem ntau yog siv rau hauv daim ntaub ntawv xws li txhuas thiab non-ferrous hlau smelting, muaj cua sov, thiab incineration txheej txheem. Lawv kuj pom siv nyob rau hauv kev lag luam uas yuav tsum tau ua hauj lwm rau cov ntaub ntawv abrasive, xws li mining thiab minerals ua.
Versatility: Cov refractories no paub txog lawv cov versatility, raws li lawv muaj peev xwm ua tau nyob rau hauv ntau hom, xws li cib, raj, thiab daim hlau, kom haum rau ntau yam kev siv.
Sintered silicon carbide refractories yog ib qho kev xaiv txhim khu kev qha rau kev lag luam uas xav tau siab hnav tsis kam, thermal conductivity, thiab corrosion kuj nyob rau hauv ib puag ncig nyuaj. Lawv qhov tshwj xeeb hardness thiab tshwj xeeb sib xyaw ua ke ntawm cov khoom ua rau lawv tsim nyog rau cov ntawv thov uas muaj qhov kub thiab txias, cov ntaub ntawv abrasive, thiab cov khoom corrosive.
Kev siv ntawm Silicon Carbide Cib
Physical And Chemical Indicators
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Table 1: Lub cev thiab tshuaj ntsuas ntawm nitride ua ke nrog cov khoom siv refractory |
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|
Yam khoom |
Electrolytic aluminium |
Hlau |
Ceramics |
Kev lag luam hluavtaws |
Ib tus nqi tso cai sib txawv thaum rov tshuaj xyuas |
|||||
|
L-DGT |
T-DGT |
T-SLT |
T-SLG |
Y-DGT |
Y-DWT |
Z-DWT |
|
|||
|
AP/% |
Tsawg dua los yog sib npaug |
17 |
17 |
16 |
15 |
18 |
18 |
20 |
+1 |
|
|
BD/ (g.cm3) |
Ntau dua lossis sib npaug |
2.65 |
2.65 |
2.65 |
3.15 |
2.60 |
2.60 |
2.55 |
-0.03 |
|
|
CCS/Mpa |
Ntau dua lossis sib npaug |
150 |
160 |
150 |
130 |
120 |
120 |
100 |
-15 |
|
|
Txias dabtsi yog khoov zog / Mpa |
Ntau dua lossis sib npaug |
40 |
45 |
─ |
─ |
40 |
40 |
35 |
-5 |
|
|
kub dabtsi yog khoov zog a |
1000 degree |
Ntau dua lossis sib npaug |
42 |
─ |
─ |
─ |
─ |
─ |
─ |
-5 |
|
1350 degree |
Ntau dua lossis sib npaug |
─ |
40 |
42 |
20 |
─ |
─ |
─ |
-5 |
|
|
1400 degree |
Ntau dua lossis sib npaug |
45 |
45 |
45 |
22 |
40 |
40 |
40 |
-5 |
|
|
Thermal conductivity b (1000 degree) / |
Ntau dua lossis sib npaug |
16 |
16 |
15 |
─ |
─ |
─ |
─ |
─ |
|
|
alkali tsis kam b (930 degree × 3h × 2 zaug) /% |
─ |
─ |
±5.0 |
0–＋5.0 |
─ |
─ |
─ |
─ |
||
|
Chemical Cheebtsam% |
ω (SiC) |
Ntau dua lossis sib npaug |
72 |
72 |
71 |
─ |
70 |
70 |
70 |
-1 |
|
ω (Sib3N4) |
Ntau dua lossis sib npaug |
18 |
20 |
─ |
─ |
20 |
─ |
─ |
-1 |
|
|
ω (AL2O3） |
Ntau dua lossis sib npaug |
─ |
─ |
5.0 |
80 |
─ |
─ |
─ |
-1 |
|
|
ω（N) |
Ntau dua lossis sib npaug |
─ |
─ |
5.5 |
5.0 |
─ |
4.8 |
4.8 |
-0.1 |
|
|
ω (Fe2O3) |
Ntau dua lossis sib npaug |
0.7 |
0.7 |
0.7 |
0.7 |
0.7 |
0.7 |
0.7 |
+0.05 |
|
|
ω (SiC + Si3N4) |
Ntau dua lossis sib npaug |
94 |
─ |
─ |
─ |
─ |
─ |
─ |
-1 |
|
|
A. Kev ntsuas kub yuav tsum tau pom zoo los ntawm tus neeg muag khoom thiab nws cov neeg siv khoom thiab nyob rau hauv 1350 degree, nws yuav tsum tau siv faus carbon lossis nitrogen tiv thaiv huab cua |
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|
Yam khoom |
Index |
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|
Tso cai sib txawv loj |
Ntev, Dav |
Tsawg dua los yog sib npaug li 300 |
±1.0 |
|
301–500 |
±2.0 |
||
|
Ntau dua lossis sib npaug rau 501 |
± {{0}}.5% (Max ± 4.0) |
||
|
Thickness |
Tsawg dua los yog sib npaug li 100 |
±1.0 |
|
|
Ntau dua lossis sib npaug rau 101 |
±1.5 |
||
|
Distortion |
Length Tsawg dua los yog sib npaug rau 300 |
Tsawg dua los yog sib npaug |
1.0 |
|
Ntev> 300 |
1.5 |
||
|
Crack Length |
Dav Tsawg dua los yog sib npaug rau 0.1 |
tsis txwv |
|
|
Dav {{0}}.1–0.25 |
Tsawg dua los yog sib npaug |
50 |
|
|
Dav ＞0.25 |
tsis pub |
||
|
Lub kaum sab xis ploj (a + b + c) |
Tsawg dua los yog sib npaug |
35 |
|
|
Lub kaum sab xis ploj (a + b + c) |
35 |
||
|
Fusion qhov |
txoj kab uas hla |
5 |
|
|
Qhov tob |
3 |
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