Nichrome-wire: izici futhi izicelo

Ubuchwepheshe banamuhla ubeka izimfuno eliphezulu ukusebenza izinto zalo abamelwe afana ezimweni yokusebenza uqobo. Omunye Alloys zobuchwepheshe kuyinto nichrome. Izintambo kanye namadivayisi eyiqukethe, amelana nobutha izimo msebenzi.

Umlando yokutholakala

Ingxubevange kuyinto ekhuthaza nickel-chromium nezinye izinhlobo zayo ezihlukahlukene ukwengeza yensimbi, manganese, aluminum ne-silicon.

Ekuqaleni kwadingeka ngezindlela ezimbili lendabuko. Isekelwe ucwaningo lwesayensi emkhakheni of izinsimbi alloying nokushintsha nezici zabo. Ni futhi Kr - izingxenye eliphezulu ukugqwala ukumelana nokushisa lezinsimbi ukumelana.

Ngenxa ingxubevange ezimbili ingxenye nickel futhi chromium, kwatholakala ngo-1906 e-USA. Namuhla isicelo ukulungiswa ezihlukahlukene kuhlanganise nesithombe emithathu yensimbi ezisekelwe.

izakhiwo Key

Indaba for yesimanje Ukushisa Imishini abendlu futhi angasetshenziswa ezimbonini ngokungangabazeki wire nichrome. Amandla ayo ukuhlangabezana nezidingo eliphakeme zobuchwepheshe.

1. resistivity agesi ngaphakathi 1100-1400 Ohm * m.
2. Ukuma - mayelana 1400˚S, okuvumela sokuqhuba 800-1100˚S. Umkhawulo umsebenzi kuncike kwengoma. Ngakho, okuqukethwe yensimbi kunciphisa yona 850-900˚S, ngoba kanambambili okumsulwa kuba 1100˚S.
3. Ubuningi 8000-8500 kg / m ^3.
4. Izikhwepha High (σ _e = 650-700 MPA); izinkomba agcinwe ngaphansi esidi egqwalisayo futhi lokushisa eside.
5. ductility Good kanye nobulukhuni lomchazi ivumela kweqa nemigwalo.

timphawu letehlukene

Phakathi ethandwa kakhulu imikhiqizo kagesi emakethe - wire Nichrome. I resistivity ka le ngxenye ye bafudumale electric ithatha okusezingeni eliphezulu zikagesi, elikuvumela ukuba bavuse ububanzi.

Isici esibalulekile salo kwensimbi umelane layo eliphezulu lokushisa namachibi futhi onakalisayo ngaphansi kwezimo ezivamile. A indima ebalulekile udlalwa lapha-chrome. Elementi kuthathwa surface ihambelana ifilimu oxide, okuyinto eyenza umsebenzi zokuzivikela. Kuyinto obangela elihambisana amnyama umbala impahla ukuthi esikhundleni isici elimhlophe-grey ngesikhathi nokususwa mechanical ungqimba oxidized.

Kuyaphawuleka ukuthi ukuthintana ngqo acid namanje uyawubhubhisa, baningi ngisho nangaphezu kwezinwele tungsten ukugqwala ukumelana.

ingxubevange Amabili ingxenye anezakhi kazibuthe. Bona kwenzeke ngoba ukulungiswa okuningi, kodwa ziye zancipha kakhulu ukusebenza.

wire Nichrome imagebhugebhu, ayikwazi kalula kuthonywa amandla.

Nokumisa imininingwane mayelana nendlela ukucacisa wire Nichrome, ikakhulu indlela yokwahlukanisa ke ngezinto zangaphandle noma efanayo:

1. White metal entsha, emnyama - ngaphambilini athuthukile.
2. Negative noma azinakwa kazibuthe.
3. Isandla esiqine ngokweqile.
4. Ukubhujiswa ngokusetshenziswa acid, namachibi ukuzinza ngaphansi kwethonya okushisa aphezulu.

ngesilwane esifuywayo onophawu

brand ekhona kuhluke Ukwakheka, pose ububanzi ingxubevange Nichrome. I wire has a ukusetshenziswa kabanzi, okuyinto kunqunywa izakhiwo ngamunye.

• Iqembu 1 - Resistor impahla: H20N80, H20N73YUM-VI, VI-N80HYUD, H15N60.
• Iqembu 2 - Metal Ukushisa izakhi ukuze angasetshenziswa ekhaya nasezimbonini ezinezici eliphezulu ukushisa ukumelana: H20N80-H-VI, H15N60-N, N-HN70YU, H20N80-H HN20YUS.
• Iqembu 3 - I-operation at okushisa afinyelela 900˚S: N50K10, Kh25N20.

I ububanzi we wire Nichrome leqembu sokuqala 0,009-0,4 mm, kanti eyesibili - 0,2-7,5 mm.

"Izihlobo" kukhona Cantal noma fehrali - Alloys chromium, aluminium nensimbi. Babuye ngezimiso eziphakeme resistivity kagesi, ukumelana ukushisa ngaphakathi 1250-1400˚S, kodwa kangako, siqala inani eliphansi (H23YU5, H13YU4, H23YU5T, H27YU5T, H15YU5).

sokuqonda izitembu

Izakhiwo kanye isicelo imikhiqizo kusukela nichrome zinqunywa yawo yamakhemikhali kwengoma. Cabanga ayinhloko.

• H20N73YUM-VI chromium - 20% nickel - 73% aluminium - 3% molybdenum - 1.5% manganese - kuze kufinyelele 0.3% titanium - 0.05%, yensimbi - 2%, i-carbon - ukuze 0.05%; gu nge indlela cleaner lokungeniswa;
• HN70YU-H: Kr - 27%, Ni - 70%, Al - 3%, MN - kuze kufinyelele 0.3%, Cs - ukuze 0,03%, Ba - kuze kufinyelele 0.1%, Fe - 1.5% , C - 0.1%; I-kagesi Ukushisa izakhi;
• HN20YUS: Kr - 20%, Ni - 20%, Al - 1%, Zn - kuze kube 0,2%, Ca - kuze kufinyelele 0.1%, Si - 2.5%, Fe - 50%, C --0, 08% - heater ngoba amaziko ezimbonini.

izinhlobo zemikhiqizo

Ukukhethwa iyiphi ingxubevange esibonakala by izinga okusezingeni eliphezulu izici zobuchwepheshe futhi mechanical, kumele kufakwe futhi kulawulwa. Ikakhulukazi uma kuziwa zibiza. Ngakho zobuchwepheshe futhi impahla ezibizayo kuyinto wire nichrome. GOST 8803-89, 12766.1-90, 12766.3-90, 12766.4-90 ichaza izidingo, izici zokusebenza wokugubha. Ngokuhambisana amazinga kanye kuncike izici zobuso, insimbi uvezwa ukudayiswa ngesimo wire noma tape, ekukhethweni zazo lincike ubukhulu, Ingxenye evundlile, ubude, ukusetshenziswa ethize.

Umthombo efanelekayo ikhishwa ezimbonini yokukhiqiza itheyiphu amazombe, wire ezigoqile.

umkhiqizo sebhithi

Lapho ekhetha imikhiqizo ephuma nichrome kubalulekile ukucabangela izici ezilandelayo:

• resistivity okuzisholo;
• ubukhulu, esigabeni cross nesisindo;
• langempela impedance futhi izinga lokushisa lokusebenza amabanga kuncike nemingcele ngokomzimba.

Amanani okuzisholo izici parametric eziyisisekelo kunqunywa GOST futhi ancike ibanga kanye nokusungulwa.

Nichrome wire-ubukhulu inquma cross-section yayo futhi elihambisana isisindo skein ukumelana umgomo.

Ngakho, isisindo wire (nichrome) 100 metres mkhiqizo ithunzi elehlayo yobukhulu bayo, kanye ububanzi futhi endaweni Sectional - kuyinto inhlukanozigaba ukuze ukumelana langempela.

Amazinga okusebenza akuxhomekile nje kuphela esimweni ukwakheka kwamakhemikhali, kodwa futhi izici parametric.

I ububanzi we wire kukhiqizwa yizimboni, kuba ngaphakathi 0,05-12 mm opholile - 0,15-3,2 mm.

isicelo

Quality njalo bathethelele izindleko. Kuyefana nasendleleni ingxubevange Nichrome. Wire futhi emapheshana kwale nto kabanzi ezindaweni lapho noma yimuphi nezinye izinsimbi ayikwazanga ukumisa omunye esikhundleni sabo. High ukumelana kagesi, namachibi ukumelana, eliphezulu izakhiwo mechanical, kuhlanganise ezindaweni onakalisayo, izimo zokusebenza lokushisa eliphezulu - konke lokhu kungasetshenziswa emikhakheni ehlukahlukene.

Esikhathini umkhakha:

• Thermocouples metallurgic amaziko kagesi.
• timphawu tesakhiwo ngoba lokungeniswa imishini metal-encibilika.
• Industrial ukupholisa omiswe.
• Izingxenye boilers futhi ukushisa.
• ukukhiqizwa kagesi: resistors futhi rheostats.
• Ezinye electrode kwabashiselayo.
• Ukuba Ongashadile Futhi multi-umqhubi izintambo kagesi.

Kuyinto ingxenye eyinhloko isakhi wonke nemishini yesimanje:

• izakhi Heating e kettles kagesi, ama-heater amanzi, boilers, heater.
• izakhi Heating e izinwele dryers, curling ziboshwe ngozankosi, zase izinyawo ngeketanga.
• amakhandlela Ukushisa izinhlelo Izithuthi.
• osikilidi Electronic.

Mhlawumbe intengo - ukubuyela impahla Nichrome kuphela. Wire bicomponent uhlobo nickel-chromium kuyoba ezibizayo. Okuqukethwe zensimbi amanani encishisiwe nickel, esikhundleni salokho, alawule futhi kube nezindleko eziphansi, kodwa unganikezi amathuba Cr20Ni80. Kukhethwa incike nezimfuneko zomsebenzi.

imikhiqizo Ukukhetha kusukela nichrome empeleni usebenze ngolwazi ukwakheka kwamakhemikhali nesithakazelo umkhiqizo, conductivity yayo kagesi kanye ukumelana naso, lo nezici zabo ezingokomzimba ububanzi, ubude cross-Sectional. Kuyaphawuleka nentshisekelo amabhuku afanele, kanye bakwazi zibukeke ukuhlukanisa ingxubevange kusukela "izimbangi" zalo. Kahle ukwaziswa okuthile - isihluthulelo ukuthembeka imishini kanye nobuchwepheshe kokuzibandakanya yayo.