Sida loo doorto alaabta dahaarka ah ee guddiga mica ee soo saarista gaadiidka

Boodhka mica commutator, oo sidoo kale loo yaqaan guddiga mica commutator, waa mid ka mid ah walxaha ugu muhiimsan ee dahaarka ee matoorada DC. Waxaa jira laba shay oo waaweyn oo loogu talagalay soo saarista guddiga mica commutator-ka: mid waa xaashida mica-ga yar, kan kalena waa warqad mica ah. Si alaabtu u gaadho dhumucda loo baahan yahay, saxanka mica ah ee ka samaysan xaashida mica waa in la shiidaa ama la safeeyaa. Marka la cadaadiyo, labada dhinacba waxaa lagu dhejiyaa waraaqo kala duwan oo kala duwan iyo shiraac, si dhumucdiisu u noqoto mid lebbisan iyo cidhiidhiga gudaha ayaa la gaarayaa ka dib markaad riixdo. Marka warqadda budada ah loo isticmaalo in lagu sameeyo guddiga mica budada ah, haddii xaaladda cadaadisku ay wanaagsan tahay, habka wax lagu shiidi karo ama wax lagu shiidi karo waa la dhaafi karaa.

Intaa waxaa dheer, marka loo eego heerarka kala duwan ee dahaarka ee matoorka, iyo shuruudaha anti-arc iyo caabbinta qoyaanka, shellac, rinjiga polyesterka, rinjiga polyacid melamine, xal ammonium phosphate aqueous, xabagta cyclic resin ama rinjiga silikoon wax laga beddelay ayaa loo isticmaalaa sidii xabag soo saar noocyada kala duwan ee looxyada mica.

Isticmaalka shellac wuxuu soo saari karaa taarikada mica-ga ah ee gaari kara heerkul ah 100 ° C iyo ka sareeya, oo ay ku jiraan taarikada daruuraha ee matoorada xawaaraha sare leh. Laakiin khasaaraha ayaa ah in waxtarka wax soo saarku uu hooseeyo.

Way ka fiican tahay shellac in la isticmaalo xabagta polyacid ee laga soo ururiyey ortho-jasmonic anhydride iyo glycerin. Way fududahay in la diiriyo oo lagu dhejiyo xaashida mica, sidoo kale waxay si otomaatig ah u samayn kartaa habka isku dhejinta xaashida mica, si tiro badan oo mulkiilayaal ah ay u soo saaraan looxyada mica-ga ah. . Si kastaba ha ahaatee, faa'iido darrada ayaa ah in uu jiro resin unpolymerized guddiga mica, iyo depolymerization of resin ee guddiga mica waa la xoojiyey hoos saamaynta heerkulka sare iyo cadaadis sare. dusha sare ee matoorka.

Markaad isticmaalayso saxanka commutator resin polyacid sida matoor heerkul sare ah si aad u dahaadhiso socodsiiyaha wiishashka jiidashada ama matoorka weyn, waa in la kululeeyaa kahor isticmaalka. Ka dib marka sidaas la sameeyo, marka la cadaadiyo commutator, qulqulka resin waa la dhimi doonaa, kaas oo sidoo kale hubinaya isku hallaynta socodka shaqada.

Isticmaalka budada Anfu sida koollada waxay ka dhigi kartaa waxqabadka guddiga mica-ga ee is-beddelka ee xaaladaha qoyaanka sarreeya iyo heerkulka (200 ℃ ama ka sarreeya). Heerkeeda hoos u dhaca ayaa sidoo kale ka yar looxyada kale ee mica, iyo iska caabin heerkulkeedu sarreeyo ayaa ka badan 600 ℃. Sidaa darteed, tayadiisa guud ahaan way ka sareysaa looxyada kala duwan ee kor ku xusan, iyo kala duwanaanshaha codsigu sidoo kale waa ka sii ballaadhan yahay.

Boodhka mica ee ka samaysan epoxy ama melamine iyo resin polyacid ayaa leh iska caabin wanaagsan oo arc waxaana loo isticmaalaa matoorada DC-xawaaraha sare leh.

Looxa mica ah ee laga sameeyay resin organic la beddelay waxa uu adkeysan karaa heerkulka sare waxaana loo isticmaalaa matoorada socodka gaarka ah.

NIDE waxay keentaa looxyada mica-ga ah ee kala duwan iyo gaadiidleyda, kuwaas oo inta badan loo isticmaalo dhanka qalabka korontada, matoorada burushka, matoorada baabuurta tamarta cusub, qalabka guriga, miisaska wax lagu qaado, sariiraha qalabka caafimaadka iyo meelo kale.