Pakati pemhando dzakasiyana dzesimbi isingatsvi, mhando dzemhando dze 304, 304L, uye 304H dzinoshandiswa zvakanyanya. Kunyange zvazvo dzingataridzika zvakafanana, mhando yega yega ine hunhu hwayo uye mashandisirwo ayo.
Giredhi304 simbi isina ngurandiyo inonyanya kushandiswa uye inoshandiswa zvakasiyana-siyana pasimbi dzisina ngura dzinosvika mazana matatu. Ine 18-20% chromium uye 8-10.5% nickel, pamwe chete nehuwandu hushoma hwekabhoni, manganese, uye silicon. Mhando iyi inodzivirira ngura zvakanyanya uye inogadzirwa zvakanaka. Inowanzoshandiswa muzvishandiso zvakaita semidziyo yekicheni, kugadzira chikafu, uye kushongedza zvivakwa.
Pombi yesimbi isina ngura ye304Liri pombi yesimbi ine kabhoni shoma yegiredhi 304, ine kabhoni yakawanda ye0.03%. Kabhoni shoma iyi inobatsira kuderedza mvura inonaya panguva yekusveta, zvichiita kuti ive yakakodzera kushandiswa pakusveta. Kabhoni shoma inoderedzawo njodzi yekunzwa, inova kuumbwa kwekromium carbides pamiganhu yezviyo, izvo zvinogona kukonzera ngura pakati pegranular. 304L inowanzoshandiswa mukusveta, pamwe nenzvimbo dzine njodzi yekusveta, senge makemikari ekugadzirisa uye michina yemishonga.
Simbi isina ngura ye304HKabhoni yakawanda yegiredhi 304, ine kabhoni iri pakati pe0.04-0.10%. Kabhoni yakawanda inopa simba riri nani pakupisa kwepamusoro uye kuramba kukwira. Izvi zvinoita kuti 304H ive yakakodzera kushandiswa pakupisa kwepamusoro, senge midziyo yekumanikidza, ma "heat exchangers", uye ma "industrial boilers". Zvisinei, kabhoni yakawanda inoitawo kuti 304H ive nyore kubatwa ne "sensitization" uye "intergranular corrosion", kunyanya mu "welding applications".
Muchidimbu, musiyano mukuru pakati pemagiredhi aya ndewehuwandu hwekabhoni hwawo uye mhedzisiro pakushandiswa kwewelding uye tembiricha yepamusoro. Giredhi 304 ndiro rinoshandiswa zvakanyanya uye chinangwa chikuru, nepo 304L iri sarudzo inosarudzwa pakushandiswa kwewelding nenzvimbo dzine ngura. 304H ine huwandu hwakawanda hwekabhoni uye yakakodzera kushandiswa kwetembiricha yepamusoro, asi mukana wayo wekunzwa uye ngura pakati pegranular inoda kutariswa zvakanyatsonaka. Pakusarudza pakati pemagiredhi aya, zvakakosha kufunga nezvezvinodiwa zvekushandisa, kusanganisira nzvimbo yekushanda, tembiricha, uye zvinodiwa zvewelding.
Boka rehumambo
Kero
Nzvimbo yeindasitiri yekuvandudza Kangsheng,
Wuqing dunhu, Tianjin guta, China.
Maawa
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