Silicon Carbide Ceramic Parts
SiC ceramics tsis tsuas yog muaj cov khoom zoo heev ntawm chav tsev kub, xws li lub zog flexural siab, zoo heev oxidation tsis kam, zoo corrosion kuj, siab hnav tsis kam thiab tsis tshua muaj kev sib txhuam coefficient, tab sis kuj kub kub mechanical zog (lub zog, creep resistance) thiab lwm yam.) qhov zoo tshaj plaws paub cov ntaub ntawv ceramic.
SiC ceramics tsis tsuas yog muaj cov khoom zoo heev ntawm chav tsev kub, xws li lub zog flexural siab, zoo heev oxidation tsis kam, zoo corrosion kuj, siab hnav tsis kam thiab tsis tshua muaj kev sib txhuam coefficient, tab sis kuj kub kub mechanical zog (lub zog, creep resistance) thiab lwm yam.) qhov zoo tshaj plaws paub cov ntaub ntawv ceramic. Lub siab kub lub zog ntawm kub nias sintering, pressureless sintering thiab kub isostatic nias sintered cov ntaub ntawv tuaj yeem khaws cia txog li 1600 degree, uas yog cov khoom siv nrog lub zog kub zoo tshaj plaws ntawm cov ntaub ntawv ceramic. Cov oxidation kuj yog qhov zoo tshaj plaws ntawm tag nrho cov uas tsis yog-oxide ceramics. Alias Emery.
Zhongwei Precision tau cog lus los muab cov neeg siv khoom hauv tsev thiab txawv teb chaws nrog qib siab Silicon carbide ceramic qhov chaw nrog lub zog siab, siab tawv, hnav tsis kam, corrosion kuj thiab kub tsis kam. technology tuam txhab uas muag. Nrog rau ntau yam khoom siv niaj hnub high-precision, nws muaj nws tus kheej paub qhov ua tiav ntawm tag nrho cov txheej txheem ntawm cov khoom siv ceramic los ntawm ceramic hmoov npaj, ntsuab lub cev molding, kub sintering rau ceramic khoom tiav.
Khoom Destsab ntawv
1. Cov qauv kev coj ua: lub tuam txhab nruj me ntsis ua raws li ISO9001 ntawv pov thawj, thiab cov khoom tau dhau ROHS, FDA EU ntawv pov thawj, thiab lwm yam.
2. Cov qauv khoom siv: ISO, GB, ASTM, SAE, EN, DIN, BS, AMS, JIS, ASME, DMS, TOCT, GB
3. Cov txheej txheem tseem ceeb: grouting, txhaj tshuaj molding, daim kab xev casting, isostatic nias, 3D luam ntawv
4. Muaj cov ntaub ntawv rau ceramics:
Nws tsuas yog ua tiav cov pas nrig ceramic, cov raj ceramic, cov nplhaib ceramic, cov phaj ceramic, cov khob nqus dej ceramic, cov hniav ceramic thiab lwm cov qauv tshwj xeeb zoo li ceramic. Cov ntaub ntawv ceramic tseem ceeb yog alumina, zirconia, silicon carbide, silicon nitride, thiab aluminium nitride ceramics. Kev kub siab ua haujlwm, hnav tsis kam, corrosion kuj, acid thiab alkali tsis kam, tiv thaiv magnetic, siab tsis kam. Thiab 3D luam ntawv, thiab lwm yam yog customized raws li tus neeg yuav tsum tau muaj.
Combined tube, nws siab hnav tsis kam zoo tiv thaiv cov khoom hnav thiab cuam tshuam.
Cov khoom tsim thiab kev ua haujlwm zoo
1. Crystal qauv
Silicon carbide feem ntau muaj ob lub qauv siv lead ua, uas yog cubic -SiC thiab hexagonal - SiC. Lub hauv paus txheej txheem ntawm silicon carbide crystals yog interspersed SiC thiab CSi tetrahedra. Cov tetrahedrons sib faib cov npoo los tsim cov txheej txheem dav hlau, thiab txuas nrog cov pawg tom ntej ntawm tetrahedra ntawm vertices los tsim cov qauv peb sab. Ntau pua ntawm cov kev hloov pauv tau raug pom vim qhov tsim ntawm cov qauv sib txawv vim qhov sib txawv ntawm cov khoom ntim ntawm tetrahedra. Feem ntau, cov tsiaj ntawv C (cubic), H (hexagonal), thiab R (rhombic) yog siv los qhia txog hom lattice, thiab tus naj npawb ntawm cov khaubncaws sab nraud povtseg nyob rau hauv chav tsev cell yog siv los qhia qhov txawv. Piv txwv li, nH qhia tias muaj n txheej raws li c-axis. Rov ua lub voj voog Cov qauv hexagonal ntawm , thaum mR sawv cev rau cov qauv rhombohedral nrog m-txheej txheej rov ua dua lub sijhawm raws li c-axis.
2. Nta
Silicon carbide (SiC) yog ib qho kev sib xyaw nrog cov khoom siv muaj zog, thiab hom ionic ntawm nws Si--C daim ntawv cog lus tsuas yog kwv yees li 12 feem pua. Yog li ntawd, nws kuj muaj cov cuab yeej zoo heev, zoo heev oxidation tsis kam, siab hnav tsis kam thiab qis coefficient ntawm kev sib txhuam, thiab lwm yam. Qhov loj tshaj plaws ntawm silicon carbide yog nws lub zog kub kub. Lub zog ntawm cov khoom siv ceramic zoo tib yam yuav raug txo qis ntawm 1200 ~ 1400 degrees Celsius, thaum lub zog flexural ntawm silicon carbide tseem nyob rau theem siab ntawm 500 ~ 600MPa ntawm 1400 degrees Celsius, yog li nws qhov kub thiab txias ua haujlwm tuaj yeem ncav cuag 1600 ~ 1700 degrees. Celsius. Tsis tas li ntawd, cov thermal conductivity ntawm silicon carbide ceramics kuj yog siab, qhov thib ob tsuas yog beryllium oxide ceramics hauv ceramics, yog li silicon carbide tau siv dav hauv cov kabmob kub kub, cov phom tsis zoo, cov nozzles, qhov kub thiab txias corrosion-resistant qhov chaw, thiab high-temperature thiab high-frequency electronics. Cov khoom siv thiab lwm qhov chaw.
Tsis tshua muaj lub ntiaj teb oxides xws li Y2O kuj tseem siv tau los ua sintering pab rau silicon carbide ceramics, thiab ntom silicon carbide tuaj yeem tau los ntawm cov kua theem sintering. Txij li thaum cov kua theem sintering txo cov porosity thiab txhim kho qhov ceev los ntawm kev tsim cov iav theem, cov yam ntxwv ntawm cov iav theem muaj kev cuam tshuam zoo rau microstructure tau los ntawm sintering.
3. Kev ua tau zoo
Nws muaj cov khoom siv zoo heev, zoo heev oxidation tsis kam, siab hnav tsis kam thiab tsis tshua muaj kev sib txhuam coefficient. Qhov tsis zoo ntawm SiC ceramics yog qhov tawg toughness tsawg, uas yog, brittleness kuj loj. Vim li no, multiphase ceramics raws li SiC ceramics, xws li fiber ntau (los yog whisker) reinforcement, heterogeneous particle dispersion ntxiv dag zog rau, thiab gradient cov ntaub ntawv ua haujlwm tau tshwm sim ib tom qab. , uas txhim kho lub toughness thiab lub zog ntawm cov khoom siv monomer.
Qhov kev ua tau zoo tshwj xeeb yog qhia hauv cov lus hauv qab no:
Kev ua tau zoo | Index |
Molar hnyav (g mol-1) | 40.097 |
Xim | Ntshiab silicon carbide yog tsis muaj xim thiab pob tshab, thiab muaj silicon carbide yog lub teeb ntsuab los yog dub vim impurities xws li dawb hlau, silicon thiab carbon. |
Qhov siab (g cm-3) | 3.17~3.47 |
Melting point | Decomposes ntawm 2830 degree nyob rau hauv ib txwm siab, thiab decomposes rau Si, Si2C thiab SiC3 |
Molar heat peev (J·mol-1·K-1) | - SiC:27.69, - dr hab:28.63 |
Thaum tshav kub kub tsim (-ΔH) (ntawm 298.15K) / kJ - mol-1 K-1 | - SiC:25.73±0.63 - SiC:28.03±2.00 |
Thermal conductivity (W·m-1·K-1) | - SiC:40.0 - SiC:25.5 |
Linear expansion coefficient (10-6 degree-1 ) | - SiC:5.12 - SiC:3.80 |
Dielectric qhov tsis tu ncua ntawm 30 OK | - SiC:9.66~10.3 - SiC:9.72 |
Kev tiv thaiv (Ω·m) | - SiC:0.0015~103 - SiC:9.72~102 |
Txheej txheem tom qab sintering
Cov cuab yeej ua haujlwm: nruab nrog CNC engraving tshuab, tsis muaj kev sib tsoo, sab hauv thiab sab nraud cylindrical sib tsoo, nto sib tsoo, CNC tshuab dhos machining chaw, xaim txiav, tig, milling, sib tsoo thiab lwm yam khoom siv high-precision thiab kuaj.
Pwm thiab tshuaj xyuas Fixtures
1. Pwm kev pab cuam lub neej: feem ntau yog semi-permanent. (tsuas yog ua npuas ncauj ploj).
2. Pwm lub sij hawm xa tuaj: 10-25 hnub, (raws li cov qauv khoom thiab cov khoom loj).
3. Tooling thiab pwm tu: Zhongwei yog lub luag hauj lwm rau precision qhov chaw.
Kev Tswj Xyuas Zoo
1. Kev tswj kom zoo: tus nqi tsis zoo yog tsawg dua 0.1 feem pua .
2. Cov qauv thiab kev sim ua haujlwm yuav raug tshuaj xyuas 100 feem pua ntawm kev tsim khoom thiab ua ntej ua zaub mov xa tuaj, kuaj cov qauv rau ntau lawm raws li ISDO cov qauv lossis cov neeg siv khoom xav tau.
3. Cov Khoom Kuaj Ntaus: Kev ntsuas ntsuas ntsuas, peb-ntsuas ntsuas ntsuas, ntsuas ntsuas ntsuas ntsuas, micro vickers hardness teser.
Daim ntawv thov
Thawj daim ntawv thov ntawm SiC yog vim nws cov khoom zoo heev, uas tuaj yeem npaj rau hauv ntau lub log sib tsoo, cov ntaub abrasive, cov ntaub ntawv abrasive thiab ntau yam abrasives. Silicon carbide ceramic qhov chaw yog li siv dav hauv kev lag luam machining. Hauv Ntiaj Teb Tsov Rog II, nws tau pom tias nws tseem tuaj yeem siv los ua tus neeg sawv cev txo qis thiab cua sov hauv steelmaking, yog li txhawb kev loj hlob sai ntawm SiC. SiC ceramics tau dav siv hauv roj av, tshuaj lom neeg kev lag luam, microelectronics, tsheb, aerospace, aviation, papermaking, laser, mining thiab atomic zog thiab lwm yam kev lag luam. Silicon carbide tau dav siv nyob rau hauv kub kub bearings, bulletproof daim hlau, nozzles, kub corrosion resistant qhov chaw raws li zoo raws li qhov kub thiab txias ntau zaus ntawm cov khoom siv hluav taws xob thiab lwm yam.
Xa kev nug
