Rabewa
Electrothermal alloys: bisa ga abubuwan da ke cikin sinadarai da tsarin su, ana iya raba su zuwa rukuni biyu:
Daya shi ne baƙin ƙarfe-chromium-aluminum gami jerin,
Sauran kuma shine jerin abubuwan da ake amfani da su na nickel-chromium, waɗanda ke da nasu fa'idodin a matsayin kayan dumama lantarki, kuma ana amfani da su sosai.
Babban manufar
Injin ƙarfe, jiyya, masana'antar sinadarai, yumbu, kayan lantarki, kayan lantarki, gilashi da sauran kayan dumama masana'antu da na'urorin dumama.
Fa'idodi da rashin amfani
1. Babban abũbuwan amfãni da rashin amfani da baƙin ƙarfe-chromium-aluminum alloy jerin: Abũbuwan amfãni: da baƙin ƙarfe-chromium-aluminum lantarki dumama gami yana da high sabis zafin jiki, matsakaicin yawan zafin jiki na sabis zai iya kai 1400 digiri, (0Cr21A16Nb, 0Cr27A17Mo2, da dai sauransu). ), dogon sabis rayuwa, high surface load, kuma mai kyau hadawan abu da iskar shaka juriya, high resistivity, cheap da sauransu.Hasara: Yafi ƙarancin ƙarfi a babban zafin jiki.Yayin da zafin jiki ya karu, filastik yana ƙaruwa, kuma abubuwan da aka gyara suna da sauƙi, kuma ba shi da sauƙi a lanƙwasa da gyarawa.
2. Babban abũbuwan amfãni da rashin amfani da nickel-chromium lantarki dumama gami jerin: Abũbuwan amfãni: high zafin jiki ƙarfi ne mafi girma fiye da na baƙin ƙarfe-chromium-aluminum, ba sauki nakasu a karkashin high zafin jiki amfani, da tsarin ba sauki canza, mai kyau. filastik, mai sauƙin gyarawa, haɓakar haɓakawa, ƙarancin maganadisu, juriya mai lalata ƙarfi, tsawon rayuwar sabis, da sauransu. Rashin amfani: Saboda an yi shi da kayan ƙarfe na nickel da ba kasafai ba, farashin wannan jerin samfuran ya kai sau da yawa fiye da haka. na Fe-Cr-Al, kuma zafin amfani yana ƙasa da na Fe-Cr-Al.
mai kyau da mara kyau
Da farko, muna bukatar mu san cewa dumama waya kai ja zafi jihar, wanda yana da wani abu da ya yi da kungiyar na dumama waya.Bari mu fara cire na'urar bushewa kuma mu yanke wani yanki na wayar dumama.Tare da taswirar 8V 1A, juriya na wayar dumama ko igiyar dumama bargon lantarki bai kamata ya zama ƙasa da 8 ohms ba, in ba haka ba injin ɗin zai ƙone cikin sauƙi.Tare da taswirar 12V 0.5A, juriya na wayar dumama kada ta kasance ƙasa da 24 ohms, in ba haka ba injin ɗin zai ƙone cikin sauƙi.Idan wayar dumama ta kai ja-ja-jaja, ja zai fi kyau, ya kamata ka yi amfani da na'ura mai ba da wutar lantarki 8V 1A, kuma ƙarfinsa ya fi na 12V 0.5A.Ta wannan hanya, za mu iya mafi alhẽri gwada amfani da rashin amfani da dumama waya.
1. Matsakaicin zafin aiki na sashin yana nufin yanayin zafin jiki na sashin kanta a cikin busasshiyar iska, ba zafin tanderu ba ko abu mai zafi ba.Gabaɗaya, yanayin zafin saman yana da kusan digiri 100 sama da zafin tanderu.Sabili da haka, la'akari da dalilan da ke sama, a cikin zane Kula da yanayin zafin jiki na kayan aiki.Lokacin da zafin jiki na aiki ya wuce ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun abu, oxidation na abubuwan da aka gyara da kansu za a kara haɓaka kuma za a rage juriya na zafi.Musamman baƙin ƙarfe-chromium-aluminum kayan aikin dumama wutar lantarki suna da sauƙin lalata, rushewa, ko ma karya, wanda ke rage rayuwar sabis..
2. Matsakaicin zafin aiki na kayan aiki yana da alaƙa mai girma tare da diamita na waya na ɓangaren.Gabaɗaya, matsakaicin zafin aiki na ɓangaren ya kamata ya kasance yana da diamita na waya ba ƙasa da 3mm ba, kuma kauri na lebur bai kamata ya zama ƙasa da 2mm ba.
3. Akwai dangantaka mai girma tsakanin yanayi mai lalacewa a cikin tanderun da kuma matsakaicin zafin jiki na kayan aiki, kuma kasancewar yanayi mai lalacewa sau da yawa yana rinjayar yanayin aiki da rayuwar sabis na abubuwan.
4. Saboda ƙananan ƙarfin zafi na baƙin ƙarfe-chromium-aluminum, abubuwan da aka gyara suna da sauƙin lalacewa a yanayin zafi.Idan ba a zaɓi diamita na waya da kyau ba ko shigarwa bai dace ba, abubuwan haɗin za su ruguje da gajeriyar kewayawa saboda yanayin zafi mai zafi.Saboda haka, dole ne a yi la'akari da shi lokacin zayyana abubuwan da aka gyara.abin sa.
5. Saboda daban-daban sinadaran abun da ke ciki na baƙin ƙarfe-chromium-aluminum, nickel, chromium da sauran jerin lantarki dumama gami, da amfani da zafin jiki da kuma hadawan abu da iskar shaka juriya an ƙaddara da bambanci a cikin resistivity, wanda aka ƙaddara a cikin baƙin ƙarfe-chromium zafi gami abu. Al element na resistivity, Ni-Cr lantarki dumama gami abu kayyade resistivity na kashi Ni.A karkashin yanayin zafi mai zafi, fim din oxide da aka kafa a kan farfajiyar haɗin gwal yana ƙayyade rayuwar sabis.Saboda amfani da lokaci mai tsawo, tsarin ciki na kashi yana canzawa akai-akai, kuma fim din oxide da aka kafa a saman yana tsufa kuma ya lalace.Abubuwan da ke cikin abubuwan da ke cikinsa ana cinye su akai-akai.Irin su Ni, Al, da dai sauransu, ta haka yana rage rayuwar sabis.Don haka, lokacin zabar diamita na waya na waya ta tanderun lantarki, ya kamata ku zaɓi daidaitaccen waya ko bel mai kauri.