Mica Screws: Siab -Kev Ua Haujlwm Rwb thaiv tsev rau cov ntawv thov Resistor
Mica screws yog tshwj xeeb fasteners engineered rau siab -kev ua tau zoo hluav taws xob rwb thaiv tsev nyob rau hauv daim ntawv thov resistor. Mica sawv tawm rau nws qhov tshwj xeeb dielectric zog thiab kev ruaj ntseg zoo dua ntawm qhov kub siab. Cov khoom no ua rau mica ib qho khoom siv hauv hluav taws xob rwb thaiv tsev uas muaj kev ntseeg siab thiab kev nyab xeeb yog qhov tseem ceeb.
Mica muab siab ntim resistivity thiab nto resistivity nrog tsawg dielectric poob.
Nws muab cov rwb thaiv tsev ruaj khov ua haujlwm txawm tias nyob hauv qhov chaw huab cua.
Mica screws, nrog rau cov nplooj ntawv mica thiab mica daim hlau, tau siv dav hauv cov khoom siv hluav taws xob thiab thermal tiv thaiv kom ntseeg tau tias kev tiv thaiv zoo thiab kev ua haujlwm zoo.
Cov ntsiab lus tseem ceeb
Mica screws muab cov rwb thaiv tsev zoo tshaj plaws hauv kev ua haujlwm siab -kev ua tau zoo, ua kom muaj kev nyab xeeb thiab kev ntseeg tau.
Nrog siab dielectric zog thiab thermal kuj, mica outperforms ntau lwm yam ntaub ntawv, ua rau nws zoo tagnrho rau huab ib puag ncig.
Kev xaiv kom raug thiab kev teeb tsa ntawm mica screws txhim kho cov kav ntev thiab kev ua haujlwm ntawm cov khoom siv tiv thaiv.
Kev saib xyuas niaj hnub ntawm mica-raws li cov khoom siv yog qhov tseem ceeb rau kev ua haujlwm ntev - thiab kev nyab xeeb hauv kev lag luam.
Siv cov mica screws ua ke nrog cov nplooj ntawv mica txhim kho cov rwb thaiv tsev thiab cov neeg kho tshuab ruaj khov, tsim kom muaj lawv raws li cov khoom nyiam hauv kev siv hluav taws xob.
Mica Screws & Insulation Properties
Kev sib xyaw ntawm Mica Screws
Mica screws yog tsim los ntawm qib siab - qib mica, cov ntxhia paub txog nws cov txheej txheem txheej thiab kev ruaj ntseg tshwj xeeb. Cov neeg tsim khoom feem ntau sivphlogopitelos yogmuscovite, ob qho tib si aluminium silicate thiab phyllosilicate minerals. Cov zaub mov no tsim cov ntawv sib txuas ntawm silicate tetrahedra nyob ib puag ncig ib txheej octahedral, muab mica screws lawv cov khoom tshwj xeeb thiab hluav taws xob.
| Khoom | Kev piav qhia |
|---|---|
| Tshuaj cais | Mica belongs rau aluminium silicates thiab phyllosilicates. |
| Cov Qib Siab | Phlogopite (kub-tiv taus txog li 1000 degree) thiab Muscovite (kub- tiv taus txog li 750 degree). |
| Qauv | Ua los ntawm parallel silicate tetrahedral txheej nyob ib puag ncig ib txheej octahedral. |
Cov qauv no ua kom cov mica screws khaws kev ncaj ncees thiab kev ua tau zoo nyob rau hauv cov xwm txheej hnyav thiab tso cai rau kev ua kom zoo, ua rau lawv haum rau siab -voltage thiab siab - qhov kub thiab txias.
Cov yam ntxwv ntawm rwb thaiv tsev
Mica zoo li cov khoom siv rwb thaiv tsev vim nws lub zog dielectric superior thiab thermal kuj. Lub cev muaj zog ntawm mica ncaj qha cuam tshuam rau kev ua haujlwm ntawm mica screws hauv kev thov thov.Muscovite thiab phlogopite muab kev pabcuam txuas ntxiv mus txog 500℃thiab 700℃feem, nrog kev txwv tsis pub ncav cuag 800℃thiab 1000 degree.
| Khoom | Muscovite | Phlogopite |
|---|---|---|
| Kev khiav hauj lwm Temp | Txog li 500 degree | Txog li 700 degree |
| Intermittent Service Temp | Txog li 800 degree | Mus txog 1000 degree |
| Dielectric zog @ Chav Temp (kV/mm) | 25 kV / hli | 25 kV / hli |
| Dielectric zog @ 400℃(kV / mm) | 13 kV / hli | 13 kV / hli |
| Dielectric zog @ 600℃(kV / mm) | 10 kV / hli | 10 kV / hli |
| Tensile zog (N / mm²) | 150 | 110 |
| Flexural zog (N / mm²) | 230 | 170 |
| Thermal conductivity (W / m · K) | 0.3 (perpendicular) | 3.0 (pib) |
Mica screws feature lub zog dielectric xws li los ntawm40-150 kV / hli, deb tshaj li cov ntaub ntawv rwb thaiv tsev xws li bakelite (6-15 kV / mm), ntawv, lossis asbestos board.
Ntawm 250 degree, mica tuav ib tug resistivity ntau yam10⁶ txog 10¹² Ω·cm, txhais tau tias nws cov rwb thaiv tsev kev ua tau zoo yog qhov cuam tshuam tsawg kawg nkaus los ntawm tshav kub, txawm tias lwm yam khoom tsis ua haujlwm.
Vim li cas thiaj siv Mica rau Screws?
Engineers xaiv mica rau cov ntsia hlau cov khoom hauv cov ntawv thov resistor vim nws cov khoom sib txuam tsis sib xws:
Mica withstands kub mus txog1600 degreetsis hlawv.
Dielectric zog ntawm50-150 kV / hlitiv thaiv hluav taws xob tawg.
Kev ruaj ntseg tshuaj zoo heev ua kom lub sijhawm ntev - durability.
High thermal conductivity dissipates tshav kub thiab txo thermal runaway pheej hmoo.
Thaum ua ke nrog cov nplooj ntawv mica, mica screws ntxiv txhim khu kev rwb thaiv tsev thiab kev ruaj ntseg, ua rau lawv zoo tagnrho rau kev thov siv hluav taws xob thiab thermal.
Cov ntawv thov hauv Resistive Devices
Resistors
Mica screws ua lub luag haujlwm tseem ceeb hauv kev tsim khoom siab -kev ua tau zoo, siab - kev nyab xeeb resistors. Mica qhov zoo tshaj plaws dielectric thiab thermal kuj ua rau nws cov khoom siv rwb thaiv tsev zoo.
| Hom Resistor | Kev piav qhia |
|---|---|
| Stamped Grid | Siv rau qhov tsis muaj zog thiab siab tam sim no; mica washers insulate nruab nrab ntawm daim phiaj. |
| Cov kab mob | Feem ntau siv mica screws rau sab hauv rwb thaiv tsev. |
| Ntug Qhov txhab | Incorporates mica screws rau hluav taws xob rwb thaiv tsev. |
Mica Cheebtsam kuj tau siv dav hauv stainless hlau kho daim phiaj txhawm rau ua kom muaj kev nyab xeeb hauv kev ua haujlwm hnyav.
Cov Cuab Yeej Cuab Yeej
Cov ntsiab lus cua sov hauv kev lag luam thiab chaw kuaj mob cia siab rau mica screws rau kev rwb thaiv tsev ruaj khov. Mica ua haujlwm ruaj khov ntawm qhov kub thiab txias mus txog900 ° F (480 ° F), zoo tagnrho rau kev ua cov yas, cov chaw kuaj mob, thiab cov ntawv siv zoo sib xws.
Mica screws tswj cov hluav taws xob sib cais nyob rau hauv kev kub ntxhov tas li.
Mica nplooj ntawv thiab daim hlau muab kev txhawb nqa thiab kev faib cov cua sov.
Kev sib dhos ua ke ua kom muaj kev tswj xyuas thermal tsis kam.
Cov khoom siv cua sov siv mica screws txo cov hluav taws xob tsis ua hauj lwm thiab txhim kho cov kav ntev.
Khoom siv
Muaj cov tshuab ua haujlwm nyob rau hauv cov xwm txheej huab cua nyob ntawm mica screws rau cov kev daws teeb meem zoo rwb thaiv tsev.Mica screws yog cov khoom tseem ceeb hauv mica band heaters siv hauv:
Extruders
Txhaj pwm
Cov kav dej kub
Pelletizers
Tshuab moulding tshuab
Cov khoom siv tshuab tshuab
Mica lub thermal conductivity zoo dissipates tshav kub, thaum nws cov tshuaj stability ua kom ntseeg tau kev ua tau zoo nyob rau hauv hnyav industrial cheeb tsam.Mica screws kuj siv nyob rau hauv TO-220 ntim cov khoom, mica washers, thiab lwm yam Cheebtsam, qhia mica versatility raws li ib tug high-kev ua tau zoo insulator.
Qhov zoo ntawm Mica Screw Rwb thaiv tsev
Thermal stability
Mica muab qhov tshwj xeeb thermal stability hauv cov khoom siv tiv thaiv:
Withstands kub tsis tu ncua mus txog 500℃thiab luv luv- lub sij hawm raug tshaj 1000℃.
Tsis hlawv lossis degrade ntawm qhov kub thiab txias.
Resistant thermal shock thiab tswj kev rwb thaiv tsev thaum hloov kub ceev.
Cov khoom no ua rau mica cov khoom ntawm kev xaiv rau cov ntawv thov uas xav tau kev tswj hwm thermal zoo dua.
Hluav taws xob cais
Kev sib cais hluav taws xob yog qhov tseem ceeb hauv high -voltage systems. Mica qhov tsis yog-kev coj tus yam ntxwv ua rau muaj kev cuam tshuam zoo tiv thaiv hluav taws xob tawg thiab hluav taws xob luv luv.
| Khoom | Kev piav qhia |
|---|---|
| Dielectric zog | Tiv thaiv hluav taws xob tsis ua hauj lwm nyob rau hauv siab - xav tau systems. |
| Tsis yog -Conductivity | Ua kom muaj kev nyab xeeb ua haujlwm nyob rau hauv high voltage. |
| Mechanical Stability | Resistant compression thiab vibration thaum tswj kev rwb thaiv tsev. |
Durability & Kev nyab xeeb
Mica muab lub neej ua haujlwm ntev thiab txhim kho kev nyab xeeb:
Corrosion-resistant thiab noo noo- pov thawj rau lub sij hawm ntev - rwb thaiv tsev.
Tsis yog -flammable txawm nyob rau qhov kub thiab txias.
High mechanical zog tiv thaiv kev ua haujlwm tsis ua haujlwm.
Mica qhov kev ua haujlwm ruaj khov txo cov nqi tu thiab txuas ntxiv cov cuab yeej siv.
Kev xaiv & Kev teeb tsa zoo tshaj plaws
Xaiv Mica Screws
Xaiv txoj cai mica screws yuav tsum tau soj ntsuam ntau yam tseem ceeb:
| Kev ntsuas | Kev piav qhia |
|---|---|
| Load & Stress | Yam tsawg kawg nkaus uas tau txais load, pov thawj load, yield zog, thiab tensile zog. |
| Lub zog | Kev ua tau zoo sib txawv ntawm cov khoom siv qib thiab qhov ntev fastener. |
| Resistance Properties | Corrosion kuj thiab xav tau kev tiv thaiv txheej. |
| Kub | Kev khiav hauj lwm kub ntau los tswj kev ua haujlwm dielectric. |
Rau siab - av av los yog tshuaj lom neeg nyob ib puag ncig, xaiv screws nrog txhim kho corrosion kuj.
Compatibility nrog Mica Sheets & Tapes
Compatibility ntawm mica screws, nplooj ntawv, thiab tapes ua kom muaj kev rwb thaiv tsev zoo:
Mica daim kab xev kaw cov npoo thiab cov pob qij txha.
Mica cov ntawv muab kev txhawb nqa.
Mica rolls npog loj qhov chaw sib xws.
Sib phim mica daim ntawv tuab thiab qib rau cov ntsia hlau loj thiab cov txheej txheem rwb thaiv tsev kom tsis txhob muaj qhov khoob thiab ua kom zoo ib yam.
Cov kev coj ua
Ua kom lub neej ua haujlwm siab tshaj plaws:
Ntxuav lub mounting cheeb tsam ua ntej installation.
Ntsuas thiab txiav cov nplooj ntawv mica kom haum meej.
Ruaj ntseg mica nplooj ntawv siv siab - lub zog nplaum.
Muab cov npoo thiab cov pob qij txha nrog cov cua sov- tiv taus mica daim kab xev.
Tsis tu ncua tshuaj xyuas qhov hnav, tawg, lossis puas.
Hloov cov khoom degraded tam sim ntawd.
Kev saib xyuas zoo khaws cia tiv taus thiab dielectric kev ua haujlwm thiab txo qis sijhawm.
FAQ
Dab tsi yog mica raj thiab nws txawv ntawm lwm cov raj rwb thaiv tsev li cas?
Lub raj mica yog ib lub cylindrical insulator ua los ntawm compressed mica ntawv los yog mica nplooj. Piv rau cov raj ceramic lossis fiberglass, mica tubes muaj lub zog dielectric zog thiab thermal kuj, ua rau lawv haum rau siab - kub, siab - cov ntawv siv hluav taws xob qhov twg lwm cov raj tsis ua haujlwm.
Mica tubes feem ntau siv nyob qhov twg?
Mica tubes yog siv dav hauv cov khoom siv hluav taws xob cua sov, cov khoom siv hluav taws xob, thiab siab -voltage resistors. Lawv insulate cua sov cov ntsiab lus thiab conductive rods thiab kuj tseem siv rau hauv cov khoom siv hauv chav kuaj thiab cov rooj sib tham tshwj xeeb uas xav tau kev ua haujlwm ruaj khov nyob rau hauv huab cua.
Yuav ua li cas mica raj txhim kho kev nyab xeeb hauv cov khoom siv tiv thaiv?
Mica raj ua raws li kev tiv thaiv kev tiv thaiv luv luv thiab thermal puas. Lawv yog hluav taws kub- tiv taus thiab tshuaj tsis muaj zog, txo qis kev pheej hmoo tsis ua haujlwm thiab tswj kev ua haujlwm thaum hloov pauv kub ceev.
Mica raj puas tuaj yeem kho tau?
Yog lawm. Mica tubes tuaj yeem tsim nyob rau hauv kev cai diameters, phab ntsa thicknesses, thiab ntev kom haum haum. Lawv tuaj yeem ua ke nrog cov nplooj ntawv mica lossis cov ntaub nplaum rau kev txhim kho rwb thaiv tsev hauv cov teeb tsa nyuaj.
Mica tubes yuav tsum tau tu dab tsi?
Tsis tu ncua ntxuav cov hlab mica kom tshem tawm cov plua plav thiab cov khib nyiab. Tshawb xyuas cov kab nrib pleb lossis nto hnav thiab hloov cov hlab puas tam sim ntawd kom muaj kev ruaj ntseg rwb thaiv tsev.