Iron-chromium-aluminum uye nickel-chromium electrothermal alloys kazhinji ane yakasimba oxidation resistance, asi nokuti choto chine magasi akasiyana-siyana, akadai semhepo, carbon atmosphere, sulfur atmosphere, hydrogen, nitrogen atmosphere, nezvimwewo. Kunyangwe marudzi ese ema electrothermal alloys akaiswa pa anti-oxidation kurapwa asati abva mufekitori, anozokonzeresa kukuvadzwa kwezvikamu kune imwe nhanho mune zvinongedzo zvekufambisa, mhepo, uye kuiswa, izvo zvinoderedza hupenyu hwebasa. Kuti uwedzere hupenyu hwesevhisi, mutengi anosungirwa kuita pre-oxidation kurapwa usati washandisa. Iyo nzira ndeyekupisa iyo yakaiswa yemagetsi inopisa alloy element mumhepo yakaoma kusvika 100-200 madhigirii pazasi pepamusoro inobvumidzwa tembiricha yealloy, ichengetedze ichidziya kwemaawa 5-10, uye ipapo Iyo choto inogona kutonhora zvishoma nezvishoma.
Zvinonzwisiswa kuti dhayamita uye ukobvu hwetambo yekudziya ndiyo parameter ine chekuita nehupamhi hwekushanda tembiricha. Iyo yakakura dhayamita yewaya yekudziya, zviri nyore kukurira dambudziko rekuchinja pakupisa kwakanyanya uye kurebesa hupenyu hwayo hwesevhisi. Apo tambo yekupisa inoshanda pasi pekushisa kwakanyanya kwekushanda, hupamhi hahufaniri kuva pasi pe3mm, uye hupamhi hwetambo yakatsetseka haifaniri kudarika 2mm. Hupenyu hwesevhisi hwewaya yekudziya hunoenderanawo zvakanyanya nehupamhi uye ukobvu hwetambo yekudziya. Kana iyo yekupisa waya inoshandiswa munzvimbo yakakwirira yekushisa, inodzivirira oxide firimu ichaumbwa pamusoro pepamusoro, uye iyo oxide firimu ichakwegura mushure menguva yenguva, ichiita kutenderera kwechizvarwa chinopfuurira uye kuparadzwa. Iyi maitiro zvakare maitiro ekuenderera mberi kwekushandisa kwezvinhu mukati memagetsi echoto waya. Waya yechoto yemagetsi ine dhayamita yakakura uye ukobvu ine zvimwe zvemukati uye hupenyu hurefu hwesevhisi.
Classification
Electrothermal alloys: zvinoenderana nemakemikari avo emukati uye chimiro, anogona kukamurwa kuita mapoka maviri:

Imwe ndeye iron-chromium-aluminium alloy series,

Imwe yacho ndeye nickel-chromium alloy series, iyo ine zvayakanakira semagetsi ekudziya zvinhu, uye inoshandiswa zvakanyanya.

Chinangwa chikuru
Metallurgical muchina, kurapwa, indasitiri yemakemikari, ceramics, zvemagetsi, midziyo yemagetsi, girazi uye mamwe maindasitiri ekudziisa midziyo uye civil kudziyisa midziyo.

Zvakanakira nezvayakaipira
1. Izvo zvakakosha uye zvisingabatsiri zvesimbi-chromium-aluminium alloy series: Zvakanakira: iron-chromium-aluminium magetsi ekupisa alloy ane high service temperature, iyo yakanyanya kupisa yebasa inogona kusvika 1400 degrees, (0Cr21A16Nb, 0Cr27A17Mo2, etc. ), hupenyu hurefu hwebasa, mutoro wepamusoro, uye yakanaka oxidation kuramba, yakakwirira resistivity, yakachipa uye zvichingodaro. Zvakaipa: Kunyanya kuderera simba pakupisa kwakanyanya. Sezvo kutonhora kunowedzera, plastiki yayo inowedzera, uye zvikamu zviri nyore kukanganisa, uye hazvisi nyore kukotama nekugadzirisa.

2. Izvo zvakakosha uye zvisingabatsiri zve nickel-chromium magetsi ekupisa alloy series: Zvakanakira: kusimba kwekushisa kwepamusoro kwakakwirira kudarika kwesimbi-chromium-aluminium, haisi nyore kukanganisa pasi pekushandiswa kwekushisa kwepamusoro, chimiro chayo hachisi nyore kuchinja, chakanaka. plasticity, iri nyore kugadzirisa, high emissivity, non-magnetic, corrosion resistance Yakasimba, hupenyu hurefu hwebasa, etc. Zvakaipa: Nekuda kwekuti yakagadzirwa nesimbi isingawanzo nickel, mutengo weiyi nhevedzano yezvigadzirwa wakakwira zvakapetwa kakawanda kupfuura izvozvo. yeFe-Cr-Al, uye tembiricha yekushandisa yakadzikira pane yeFe-Cr-Al.

zvakanaka nezvakaipa
Chokutanga pane zvose, tinofanira kuziva kuti tambo yekupisa inosvika kune tsvuku inopisa, iyo ine chokuita nesangano rekupisa tambo. Ngatibvisei bvudzi rebvudzi kutanga uye ticheke chikamu chekupisa waya. Shandisa 8V 1A transformer, uye kushorwa kwetambo yekupisa kana tambo yekupisa yegumbeze remagetsi haifaniri kunge iri pasi pe8 ohms, kana zvisina kudaro transformer ichapisa nyore nyore. Ne 12V 0.5A transformer, kushorwa kwetambo yekupisa hakufaniri kuva pasi pe12 ohms, kana zvisina kudaro transformer ichapisa nyore nyore. Kana iyo inopisa waya inosvika kune yakatsvuka-inopisa nyika, iyo yakatsvuka zviri nani, iwe unofanirwa kushandisa 8V 1A transformer, uye simba rayo rakakura kupfuura iro re12V 0.5A transformer. Nenzira iyi, tinogona kuedza zviri nani zvakanakira uye zvisingabatsiri zvewaya yekudziya.

4 Chengetedza Kugadzirisa Chinhu
1. Kupisa kwakanyanya kwekushanda kwechikamu kunoreva kupisa kwepamusoro kwechikamu pachayo mumhepo yakaoma, kwete kupisa kwechoto kana chinhu chinopisa. Kazhinji, tembiricha yepasi inenge 100 madhigirii akakwira kupfuura tembiricha yechoto. Nokudaro, tichifunga nezvezvikonzero zviri pamusoro apa, mukugadzira Chengetedza kutonhora kwekushanda kwezvikamu. Kana tembiricha yekushanda ichipfuura imwe muganhu, iyo oxidation yezvikamu pachayo ichakwidziridzwa uye kushomeka kwekupisa kuchaderedzwa. Kunyanya iyo iron-chromium-aluminium yemagetsi yekudziya alloy zvikamu zviri nyore kukanganisa, kudonha, kana kutopwanya, izvo zvinopfupisa hupenyu hwesevhisi. .

2. Kupisa kwakanyanya kwekushanda kwechikamu kune hukama hukuru nehupamhi hwetambo yechikamu. Kazhinji, iyo yakanyanya tembiricha yekushanda yechikamu inofanira kunge iine waya dhayamita isingasviki 3mm, uye ukobvu hweiyo flat strip haifanire kunge iri pasi pe2mm.

3. Pane hukama hukuru pakati pemhepo inopisa muchoto uye kupisa kwakanyanya kwekushanda kwezvikamu, uye kuvapo kwemhepo inopisa kunowanzokanganisa kupisa kwekushanda uye hupenyu hwebasa rezvikamu.

4. Pamusana pekuderera kwepamusoro-kupisa simba resimbi-chromium-aluminium, zvikamu zviri nyore kuremara pakupisa kwepamusoro. Kana iyo dhayamita yetambo isina kusarudzwa zvakanaka kana kuiswa kwacho kusina kunaka, zvikamu zvichaputsika uye pfupi-dunhu nekuda kwekupisa-kupisa. Saka, inofanirwa kuverengerwa pakugadzira zvikamu. chinhu chayo.

5. Nekuda kweakasiyana makemikari akaumbwa esimbi-chromium-aluminium, nickel, chromium uye mamwe akatevedzana emagetsi ekudziya alloys, tembiricha yekushandisa uye oxidation kuramba kunotsanangurwa nemusiyano weresistivity, inotarirwa mune iron-chromium kupisa alloy zvinhu. Al element ye resistivity, Ni-Cr yemagetsi inodziya alloy zvinhu inosarudza resistivity yechinhu Ni. Pasi pemamiriro ekupisa kwepamusoro, iyo oxide firimu inoumbwa pamusoro peiyo alloy element inosarudza hupenyu hwebasa. Nekuda kwekushandiswa kwenguva refu, chimiro chemukati chechinhu chinogara chichichinja, uye iyo oxide firimu inoumbwa pamusoro inochembera uye inoparadzwa. Zvinhu zviri mukati mezvikamu zvayo zvinogara zvichidyiwa. Zvakadai saNi, Al, nezvimwewo, nokudaro vachipfupisa hupenyu hwebasa. Naizvozvo, kana uchisarudza dhayamita yewaya yewaya yechoto chemagetsi, unofanirwa kusarudza waya yakajairwa kana bhandi rakakora.