Qaraxa Shenhai-Caddaynta
Codsiyada korontada ee aan qarxin, Qalabka dahaarka waxaa loo kala saaraa noocyo adag iyo dareere, si gaar ah loogu talagalay codsiyadan, si ka duwan qaybaha dahaarka ballaaran.
Alaabta dahaarka adag
Waxaa loola jeedaa sida “qalabka dahaarka adag-state,” Kuwani waa walxo ku sii adkeysanaya xaaladaha shaqada. Qeybtaan waxaa ka mid ah agabka sida varnish dahaarka, kuwaas oo marka hore dareere ah laakiin adkeeya marka la codsado.
Walxaha dahaarka adag ee sida caadiga ah loo isticmaalo ee ku jira qalabka korontada ee aan qarxin ayaa hoos ku taxan.
| Darajada alaabta | Marka la barbar dhigo Tusmada Dabagalka (CTI) | Magaca alaabta |
|---|---|---|
| I | 600≤CTI | Ceramics (dhalaalaysa), miica, muraayad |
| II | 400≤CTI#600 | Melamine asbestos balaastig ah, silikoon organic asbestos arc caag u adkaysta, Isku-darka polyester-ka aan saturated |
| III-a | 175≤CTI 400 | Polytetrafluoroethylene caag ah, melamine galaas fiber fiber caag ah, looxa maro galaas epoxy lagu daaweeyaa rinjiga u adkaysta arc dusha sare |
| III-b | 100≤CTI 175 | Caag phenolic ah |
Qalabkan waxaa lagu qiimeeyay iyadoo lagu salaynayo Tusaha Dabagalka Isbarbardhigga (CTI), qiyaasta waxqabadka korantada ee dusha sare. Si kastaba ha ahaatee, farsamadooda, kulaylka, iyo sifooyinka kiimikaad aad ayey u kala duwanaan karaan, u baahan in si taxadar leh loo doorto iyadoo lagu salaynayo xaaladaha deegaanka ee gaarka ah ee isticmaalka, oo ay ku jiraan tixgelinta xoogga farsamada, caabbinta kulaylka, iyo adkaysiga kiimikaad.
dhoobada (dhalaalaysa) Qalabka
Ka kooban walxaha dahaarka aan biraha ahayn ee aan noolaha ahayn, Kuwaas waxaa lagu sameeyay iyagoo isku dhejinaya oksaydhyada birta ah iyo iskudhisyada birta ah ee aan oksijiinta ahayn. Sifooyinkooda waxaa ka mid ah kala duwanaansho adag oo ah 1000 ~ 5000HV, xoog adkaysi ka 26 ~ 36 MPa, xoog cadaadis ka 460 ~ 680 MPa, dhibco dhalaalay oo ka sarreeya 2000 ° C, ballaarinta kulaylka hoose, iyo xasilloonida kiimikada sare iyo iska caabinta daxalka.
Polytetrafluoroethylene (PTFE)
Maaddadan fluoroplastic waxay joogtaa isticmaalka muddada-dheer ee heerkulka laga bilaabo -180 ° C ilaa 260 ° C. Aad bay u deggan tahay kiimikaad ahaan, u adkaysta daxalka, waxay muujisaa isku-dhafan hoose, waxayna leedahay isugeyn balaadhin kuleyl oo muhiim ah.
Caagagga Phenolic
Caag heerkulbeeye ah, ganacsi ahaan loo yaqaan “bakelite” ama “looxa phenolic,” waxay u adkeysan kartaa heerkulka ka sarreeya 3000 ° C waxayna bixisaa iska caabin gubasho oo heer sare ah iyo xasilloonida kiimikada, inkasta oo ay jaban tahay oo aanay u adkaysan karin daxalka alkali.
Marka lagu daro walxaha dahaarka adag ee lagu sheegay, Qalabka korantada ee aan qarxin ayaa si weyn u isticmaala walxo adag oo adag oo kala duwan, oo ay ku jiraan walxo balaastiig ah oo loogu talagalay walxaha dahaarka ah iyo walxaha caawiya qaarkood ee matoorada aan qarxin.
Alaabta Dareeraha Dareeraha
Kuwani waxay tilmaamayaan walxaha dahaarka sida caadiga ah laga helo qaabka dareeraha, sida saliidda transformer, iyo agabka sida varnish dahaarka ee loo isticmaalo impregnation gariiradda, kuwaas oo xoojiya ka dib daawaynta gaarka ah weli weli waxaa loo tixgeliyaa insulators dareere ah.
1. Saliida Transformer
• Muhiim u ah qalabka korontada ee aan qarxin sida transformers, saliiddaani waa inay buuxisaa heerar gaar ah:
Barta dabka oo aan ka hoosayn 300°C.
• Barta fiishka oo aan ka hoosayn 200°C (koob xiran).
Kinematic viscosity oo aan dhaafin 1*10?? m²/s at 25°C.
• Awood jabka dielectric ugu yaraan 27kV.
• Iska caabbinta mugga ugu yaraan 1*10??? m heerkulka 25 ° C.
• Barta shubka oo aan ka sarrayn -30°C.
• Aysiidhka (qiimaha dhexdhexaadinta) ilaa 0.03 mg/g (potassium hydroxide).
Saliida beddelka, Ugu horrayn waa saliid dahamiya macdanta oo ka kooban alkanes, cycloalkanes, iyo hydrocarbons caraf udgoon oo aan saturated, Waxay bixisaa tayada dahaarka iyo xasilloonida gabowga. Si kastaba ha ahaatee, Isticmaalkeeda qalabka macdanta Class I waa la xaddiday iyadoo ay ugu wacan tahay hoos u dhaca ka iman kara astaamihiisa dahaadhka isticmaalka dheer.
2. Varnish
Waxaa loo isticmaalay in lagu buufiyo gariiradaha korantada ee qalabka aan qarxin, Dahaarka varnish waxay wanaajisaa awoodooda dahaarka korantada. Lagu heli karo foomamka dareeraha ku salaysan iyo kuwa aan dareeraha lahayn, varnishes-yadani waxay ka samaysan yihiin resins dabiici ah ama synthetic oo ay weheliyaan dareerayaal kala duwan sida benzene iyo alkolada oo loogu talagalay nooca dareeraha ku salaysan., iyo resins synthetic, wakiilada adkaynaya, iyo khafiifiyeyaasha firfircoon sida styrene ee nooca aan dareeraha lahayn.
Labada nooc ee varnish waxay bixiyaan fursado badan oo ku habboon baahiyaha codsi ee kala duwan, hubinta la qabsiga shuruudaha hawlgalka gaarka ah.