Ma electrode eWelding hardfacing anomiririra chikamu chakakosha chezvinoshandiswa pakuwelding zvakagadzirirwa kuchengetedza pamusoro uye kugadzirisa zvikamu. Iyo electrode yeNi307-2, inoenderana neAWS A5.11 ENiCrFe-2 classification, inoratidza chikamu ichi kuburikidza nekuumbwa kwayo kwe nickel-base uye hunhu hwayo hwehunyanzvi. Iyi electrode ine system ye low-hydrogen sodium coating uye inoshanda paDCEP (Direct Current Electrode Positive) polarity, zvichiita kuti ive yakakodzera kushandiswa uko hunhu hwe deposition hwakadzorwa uye huwandu hushoma hwe hydrogen hunodiwa. Hunhu uhwu hunoiisa semhinduro inoshanda kune akasiyana mamiriro ekugadzirisa maindasitiri.
Kuumbwa kukuru kweizvimaerekitirodhi ekushongedza simbiChigadzirwa ichi chakavakirwa pahurongwa hwe alloy ye nickel-chromium-iron. Musanganiswa uyu wesimbi unopa hunhu hwakaringana hunosanganisira kuramba zvakanaka ngura uye oxidation, pamwe chete nekuchengetedza simba pakupisa kwakakwira. Hwaro hwe nickel-base hunopa kusimba kwakanyanya kana tichienzanisa nema electrodes esimbi akajairika, zvichideredza mukana wekutsemuka mumamiriro ekupisa. Kuenzana kwe alloy chaiyo kunoita kuti ienderane nezvinhu zvakasiyana-siyana zve base uku ichipa hunhu hunodiwa pamusoro.
Hunhu hwakakosha hweizvimaerekitirodhi ekushongedza simbiChinhu chacho chine hydrogen sodium shoma. Rudzi urwu rwekuputira runoderedza huwandu hwehydrogen musimbi yakachengetwa, nokudaro runoderedza njodzi yekutsemuka kunokonzerwa nehydrogen muchikamu chakasimba. Kuputira uku kunobatsirawo pakugara zvakanaka kwearc, kutamiswa kwesimbi kwakatsetseka, uye kubviswa kweslag kwakanaka. Chinodiwa cheDCEP polarity chinoita kuti arc igadzikane uye ipinde zvakanaka ukuwo ichivandudza kushanda zvakanaka kwedeposition panguva yekuwelding.
Magadzirirwo ekushanda kwezvigadzirwa zvema electrode aya ekugadzirisa simbi anosanganisira maitiro ekuisa zvinhu pasi anodzora uye mashandiro ekuisa zvinhu pasi anotarisirwa. Ma electrode aya akagadzirwa kuti agadzire madhipoziti akaomarara, emhando yepamusoro asina kupfapfaidza zvakanyanya uye ane mabhedhi akadzorwa. Simbi inozoshandiswa inogona kugadzirwa nemashini uchishandisa nzira dzechinyakare, zvichibvumira kugadziriswa kwehukuru uye kupedzisa pamusoro kana zvichidikanwa. Maitiro aya anoita kuti electrode ive yakakodzera kushandiswa uko mashandiro e hardfaced layer uye mamiriro ayo ekupedzisira epamusoro zvakakosha.
Mukushandiswa kunoshanda, idzi nickel-basemaerekitirodhi ekushongedza simbiZvinhu zvinoshandiswa pakugadzirisa zvikamu uye kudzivirira pamusoro pechinhu muzvikamu zvakasiyana-siyana zvemaindasitiri. Mashandisirwo akajairika anosanganisira kuvakazve zvinhu zvakasakara zvinoshanda munzvimbo dzine tembiricha yakakwira, kubatanidza simbi dzakasiyana dzine hunhu hwakasiyana hwekuwedzera kupisa, uye kufukidza pamusoro pechinhu chinoda kuramba ngura pamwe chete nesimba remakanika. Hunhu hwehunyanzvi uye hunhu hwekushanda kunoita kuti maerekitirodhi aya ashande mumamiriro ekugadzirisa nekugadzira uko kuchengetedzwa kwenzvimbo kwenguva refu uye kudzorerwa kwechinhu kunodiwa.
Nguva yekutumira: Gumiguru-14-2025