Iron-chromium-aluminiyam kunye ne-nickel-chromium electrothermal alloys ngokubanzi zinokumelana ne-oxidation eyomeleleyo, kodwa ngenxa yokuba iziko liqulethe iigesi ezahlukeneyo, ezifana nomoya, umoya we-carbon, umoya wesulfure, i-hydrogen, i-nitrogen emoyeni, njl. Zonke zinempembelelo ethile. Nangona zonke iintlobo zee-alloys ze-electrothermal ziye zaphantsi konyango oluchasene ne-oxidation ngaphambi kokuba zihambe kwi-factory, ziya kubangela umonakalo kumacandelo kwinqanaba elithile kwiikhonkco zokuhamba, ukuvunguza kunye nokufakwa, okuya kunciphisa ubomi benkonzo. Ukwandisa ubomi benkonzo, umthengi kufuneka aqhube unyango lwangaphambili lwe-oxidation ngaphambi kokusetyenziswa. Indlela yokutshisa i-alloy yombane efakwe kwi-alloy element kumoya owomileyo ukuya kuma-degrees angama-100-200 ngaphantsi kweqondo lokushisa elivumelekileyo le-alloy, ligcine lifudumele kwiiyure ezingama-5-10, kwaye ke Isithando somlilo sinokupholiswa ngokukhawuleza.
Kuyaqondwa ukuba ububanzi kunye nobukhulu bocingo lokufudumeza luyiparameter ehambelana nobushushu bokusebenza okuphezulu. I-diameter enkulu yocingo lokufudumeza, kulula ukunqoba ingxaki ye-deformation kwiqondo lokushisa eliphezulu kunye nokwandisa ubomi bayo benkonzo. Xa ucingo lokufudumeza lusebenza ngaphantsi kweqondo lokushisa eliphezulu, ububanzi abuyi kuba ngaphantsi kwe-3mm, kwaye ubukhulu bomgca weflethi abuyi kuba ngaphantsi kwe-2mm. Ubomi benkonzo yocingo lokufudumeza bukwanxulumene kakhulu nobubanzi kunye nobukhulu bocingo lokufudumeza. Xa ucingo lokufudumeza lusetyenziswe kwindawo yokushisa ephezulu, ifilimu ye-oxide ekhuselayo iya kwenziwa phezu komhlaba, kwaye ifilimu ye-oxide iya kuguga emva kwexesha elithile, yenze umjikelezo wesizukulwana esiqhubekayo kunye nokutshatyalaliswa. Le nkqubo ikwayinkqubo yokusetyenziswa ngokuqhubekayo kwezinto ngaphakathi kwintambo yesithando sombane. Ucingo lwesithando sombane olunobukhulu obukhulu kunye nobukhulu bunomxholo ongaphezulu kunye nobomi benkonzo obude.
Ukuhlelwa
I-alloys ye-Electrothermal: ngokomxholo wabo wekhemikhali kunye nesakhiwo, zinokwahlulwa zibe ngamacandelo amabini:

Enye luchungechunge lwe-iron-chromium-aluminium alloy,

Enye i-nickel-chromium alloy series, enenzuzo yazo njengezinto zokufudumeza zombane, kwaye zisetyenziswa ngokubanzi.

Injongo ephambili
Oomatshini besinyithi, unyango lwezonyango, ishishini lemichiza, iiseramikhi, i-electronics, izixhobo zombane, iglasi kunye nezinye izixhobo zokufudumeza kwimizi-mveliso kunye nezixhobo zokufudumeza uluntu.

Izinto eziluncedo nezingeloncedo
1. Iingenelo eziphambili kunye nokungalunganga kwe-iron-chromium-aluminium alloy series: I-Advantages: i-iron-chromium-aluminium yokufudumeza yombane i-alloy yokufudumala yombane inokushisa kwenkonzo ephezulu, ubushushu benkonzo ephezulu bunokufikelela kwii-degrees ze-1400, (0Cr21A16Nb, 0Cr27A17A17Mo2), inkonzo yomthwalo obude, ubomi obude, ubomi obude, kunye nomgangatho ophezulu we-oxygen. resistivity eliphezulu, cheap njalo njalo. Ukungalungi: Ubukhulu becala amandla aphantsi kwiqondo lokushisa eliphezulu. Njengoko iqondo lokushisa lisanda, iplastiki yayo iyanda, kwaye amacandelo akhubazeka ngokulula, kwaye akulula ukugoba nokulungiswa.

2. Iinzuzo eziphambili kunye nokungalunganga kwe-nickel-chromium yombane wokufudumeza i-alloy series: I-Advantages: amandla okushisa aphezulu aphezulu kune-iron-chromium-aluminium, akulula ukuguqula phantsi kokusetyenziswa kobushushu obuphezulu, isakhiwo sayo akulula ukuyitshintsha, iplastiki enhle, kulula ukuyilungisa, ukukhutshwa okuphezulu, ukungabikho kwemagnetic, ukubola, ukonakala kwenkonzo, ukuxhatshazwa kobomi obude. yezinto ezinqabileyo zensimbi ye-nickel, ixabiso lolu luhlu lweemveliso liphezulu ngokuphindwe kaninzi kune-Fe-Cr-Al, kwaye ubushushu bokusetyenziswa buphantsi kune-Fe-Cr-Al.

okulungileyo nokubi
Okokuqala, kufuneka sazi ukuba ucingo lokufudumeza lufikelela kwindawo ebomvu eshushu, enento yokwenza nombutho wocingo lokufudumeza. Masisuse isomisi seenwele kuqala kwaye sinqumle icandelo locingo lokufudumeza. Sebenzisa i-8V 1A i-transformer, kunye nokuchasana kwentambo yokufudumeza okanye intambo yokufudumala yengubo yombane akufanele ibe ngaphantsi kwe-8 ohms, ngaphandle koko i-transformer iya kutshisa ngokulula. Nge-12V 0.5A i-transformer, ukuchasana kocingo lokufudumeza akufanele kube ngaphantsi kwe-12 ohms, ngaphandle koko i-transformer iya kutshisa ngokulula. Ukuba ucingo lokufudumeza lufikelela kwi-red-hot state, i-redder ingcono, kufuneka usebenzise i-8V 1A i-transformer, kwaye amandla ayo makhulu kune-12V 0.5A transformer. Ngale ndlela, sinokuvavanya ngcono iingenelo kunye nokungonakali kocingo lokufudumeza.

4 Ingqalelo yoHlelo lwento
1. Ubushushu obuphezulu bokusebenza kwecandelo libhekiselele kwiqondo lokushisa eliphezulu lecandelo ngokwalo emoyeni owomileyo, kungekhona ukushisa kwesithando somlilo okanye into eshushu. Ngokuqhelekileyo, ubushushu bomhlaba bumalunga ne-100 degrees ngaphezu kobushushu beziko. Ngoko ke, ngokuqwalasela ezi zizathu zingasentla, ekuyilweni Nikela ingqalelo kubushushu bokusebenza kwamacandelo. Xa ubushushu bokusebenza budlula umda othile, i-oxidation yamacandelo ngokwawo iya kukhawuleziswa kwaye ukumelana nobushushu kuya kuncitshiswa. Ngokukodwa i-iron-chromium-aluminiyam yombane yokufudumeza i-alloy alloy components kulula ukukhubaza, ukuwa, okanye ukuphuka, okunciphisa ubomi benkonzo. .

2. Ubushushu obuphezulu bokusebenza kwecandelo linobudlelwane obuninzi kunye nobubanzi bocingo lwecandelo. Ngokuqhelekileyo, ubushushu bokusebenza obuphezulu becandelo kufuneka bube nobubanzi bocingo obungekho ngaphantsi kwe-3mm, kwaye ubukhulu bomgca weflethi akufanele bube ngaphantsi kwe-2mm.

3. Kukho ubudlelwane obuninzi phakathi kwe-atmosphere ephazamisayo kwisithando somlilo kunye nobushushu obuphezulu bokusebenza kwamacandelo, kwaye ubukho be-atmosphere ephazamisayo buhlala buchaphazela ubushushu bokusebenza kunye nobomi benkonzo yamacandelo.

4. Ngenxa yamandla aphantsi obushushu obuphezulu be-iron-chromium-aluminium, amacandelo akhubazeka ngokulula kumaqondo aphezulu. Ukuba ububanzi bocingo alukhethwanga ngokufanelekileyo okanye ukufakela kungafanelekanga, amacandelo aya kudilika kunye ne-short-circuit ngenxa ye-deformation ephezulu yokushisa. Ngoko ke, kufuneka kuthathelwe ingqalelo xa kuyilwa amacandelo. umba wayo.

5. Ngenxa yokwakheka kweekhemikhali ezahlukeneyo ze-iron-chromium-aluminiyam, i-nickel, i-chromium kunye nolunye uchungechunge lwe-alloys zokufudumeza zombane, ukusetyenziswa kobushushu kunye nokumelana ne-oxidation kunqunywe ngumahluko we-resistiveivity, ochazwe kwi-iron-chromium ubushushu be-alloy material Al element ye-resistivity, i-Ni-Cr yombane yokufudumala i-alloy ye-accessivity ye-element resistivity. Ngaphantsi kweemeko eziphezulu zokushisa, ifilimu ye-oxide eyenziwe phezu kwendawo ye-alloy inquma ubomi benkonzo. Ngenxa yokusetyenziswa kwexesha elide, isakhiwo sangaphakathi sento sihlala sitshintsha, kwaye ifilimu ye-oxide eyenziwe phezu komhlaba nayo iyaguga kwaye itshatyalaliswe. Izinto ezingaphakathi kumacandelo ayo zihlala zityiwa. NjengoNi, uAl, njl., ngaloo ndlela bufutshane ubomi benkonzo. Ngoko ke, xa ukhetha i-diameter yocingo lwentambo yesithando sombane, kufuneka ukhethe ucingo oluqhelekileyo okanye ibhanti elithe tye.