Kazhinji, VJ Piping inogadzirwa nesimbi isina ngura inosanganisira 304, 304L, 316 uye 316Letc. Pano tichatsanangura muchidimbu hunhu hwezvinhu zvakasiyana-siyana zvesimbi isina ngura.
SS304
Pombi yesimbi isina ngura ye304 inogadzirwa zvichienderana neAmerican ASTM standard yerudzi rwesimbi isina ngura.
Pombi yesimbi isina ngura ye304 yakaenzana nepombi yedu yesimbi isina ngura ye0Cr19Ni9 (OCr18Ni9).
Chubhu yesimbi isina ngura ye304 sesimbi isina ngura inonyanya kushandiswa mumidziyo yechikafu, michina yemakemikari, uye indasitiri yesimba reatomu.
Pipe yesimbi isina ngura ye304 ipombi yesimbi isina ngura inoshandiswa nevanhu vose, inoshandiswa zvakanyanya mukugadzira michina nezvikamu zvayo zvakanaka (kuramba ngura uye kugona kugadzira zvinhu).
Pipe yesimbi isingatsvi 304 ndiyo inonyanya kushandiswa musimbi isingatsvi, inodzivirira kupisa. Inoshandiswa mumidziyo yekugadzira chikafu, michina yemakemikari, simba renyukireya, nezvimwewo.
304 simbi isina ngura makemikari anotsanangurwa C, Si, Mn, P, S, Cr, Ni, (Nickel), Mo.
Musiyano weSimbi Isina Kushanda we304 ne304L
304L inodzivirira ngura zvakanyanya, 304L ine kabhoni shoma, 304 isimbi isingatsvedzeri inoshandiswa nevanhu vose, uye inoshandiswa zvakanyanya mukugadzira michina nezvikamu zvinoda kushanda zvakanaka (kuramba ngura uye kugona kuumbwa). 304L imhando yesimbi isingatsvedzeri ye304 ine kabhoni shoma uye inoshandiswa pakushongedza. Kabhoni shoma inoderedza kunaya kwemvura mumakabhoni munzvimbo ine kupisa pedyo nesimbi inotsvedzerera, izvo zvinogona kukonzera ngura pakati pegranular (welding erosion) musimbi isingatsvedzeri mune dzimwe nzvimbo.
304 inoshandiswa zvakanyanya, ine simba rakanaka rekudzivirira ngura, simba rekudzivirira kupisa, simba shoma rekupisa uye hunhu hwemakanika; Kugadziriswa kwakanaka kwekupisa, senge kutsika nekukotama, pasina kurapwa kwekupisa, chiitiko chekuomesa (hapana magineti, uchishandisa tembiricha -196℃-800℃).
304L inodzivirira ngura zvakanaka mushure mekunamira kana kuderedza kushushikana: inogona kuramba ichidzivirira ngura zvakanaka kunyangwe isina kurapwa nekupisa, tembiricha yekushanda -196℃ -800℃.
SS316
Simbi isingasvibi 316 inewo hunhu hwakanaka hwekukukurwa kwechloride, saka inowanzoshandiswa munzvimbo dzegungwa.
Fekitori yesimbi isina ngura inodzivirira ngura
Kuramba ngura kuri nani pane simbi isingasvibi 304, mukugadzirwa kwepulp nepepa zvine kuramba ngura kwakanaka.
Uye simbi isingatsvinyike ye316 inodzivirirawo mhepo dzemugungwa uye dzemumaindasitiri. Inodzivirira kupisa mumadhigirii 1600 pasi pekushandiswa kusingachinji uye mumadhigirii 1700 pasi pekushandiswa kunoramba kuchienderera, simbi isingatsvinyike ye316 inodzivirira kupisa zvakanaka.
Kana iri pakati pemadhigirii 800-1575, zvakanaka kuti usashandise simbi isina ngura ye316 nguva dzose, asi kana iri pakati pekupisa kunze kwesimbi isina ngura ye316 nguva dzose, simbi isina ngura inodzivirira kupisa zvakanaka.
Kudzivirira kwesimbi isina ngura ye316 carbide precipitation kuri nani pane kwesimbi isina ngura ye316 uye kunogona kushandiswa muhurefu hwekupisa huri pamusoro apa.
Simbi isingatsvigiri 316 ine mashandiro akanaka ekuwelda. Inogona kukweshwa uchishandisa nzira dzese dzekuwelda. Kuwelda kunogona kushandiswa zvichienderana nekushandisa 316Cb, 316L kana 309CB stainless steel filler rod kana electrode welding. Kuti uwane resistance yakanakisa yekuora, chikamu chakakweshwa chesimbi isingatsvigiri 316 chinofanira kukweshwa mushure mekuwelda. Kukwesha mushure mekuwelda hakudiwi kana 316L stainless steel ikashandiswa.
Mashandisirwo akajairika: michina ye pulp nepepa, michina yekudhaya, michina yekugadzira mafirimu, mapaipi, nezvinhu zvekunze kwezvivakwa zvemumaguta munzvimbo dziri kumahombekombe.
Simbi Isina Mabhakitiriya Inorwisa Mabhakitiriya
Nekukura kwehupfumi, simbi isina ngura muindasitiri yechikafu, mabasa ekubika uye kushandiswa kwehupenyu hwemhuri kuri kuwedzera, zvinotarisirwa kuti kunze kwemidziyo yemumba nemidziyo yetafura yesimbi isina ngura, inopenya uye yakachena sezvinhu zvitsva, asi inewo yakanyanya kunaka yekuora, inorwisa mabhakitiriya, uye inoshanda sekuuraya utachiona.
Sezvatinoziva tese, dzimwe simbi, dzakadai sesirivha, mhangura, bismuth nezvimwewo dzine simba rekurwisa mabhakitiriya, simbi isingakuvadzi inorwisa mabhakitiriya, inonzi simbi isingakuvadzi inorwisa mabhakitiriya, iri musimbi isingakuvadzi kuti iwedzere huwandu hwakakwana hwezvinhu zvine simba rekurwisa mabhakitiriya (senge mhangura, sirivha), kugadzirwa kwesimbi mushure mekupisa kwemishonga inorwisa mabhakitiriya, ine simba rekugadzirisa rakagadzikana uye simba rekurwisa mabhakitiriya rakanaka.
Mhangura ndiyo chinhu chakakosha chekurwisa mabhakitiriya, huwandu hwekuwedzera haufanirwe kungofunga nezvesimba rekurwisa mabhakitiriya chete, asiwo kuve nechokwadi chekuti simbi inogadzirisa zvinhu zvakanaka uye zvakagadzikana. Huwandu hwakakwana hwemhangura hunosiyana zvichienderana nemhando dzesimbi. Kuumbwa kwemakemikari esimbi isina utachiona yakagadzirwa neJapan Nissin Steel kunoratidzwa muTafura 10. 1.5% mhangura inowedzerwa kusimbi yeferritic, 3% kusimbi yemartensitic uye 3.8% kusimbi yeaustenitic.
Nguva yekutumira: Ndira-05-2022
