Stainless simbi isimbi yakakwira alloy inokwanisa kuramba corrosion mumhepo kana makemikari corrosive media. Simbi isina tsvina haidi kurapwa pamusoro senge color plating, asi inogona zvakare kuve neyakagadzika pamusoro pezvinhu zvesimbi isina tsvina. Kubva pakuona kwe metallographic, simbi isina tsvina ine chromium, inoumba firimu rekromium rakatetepa kwazvo pamusoro. Iyi firimu inogona kutsaura iyoStainless simbi castingskubva pakupinda mukati meokisijeni, nokudaro ichipa kusagadzikana nekuora. Kuti uchengetedze kusimba kwekupokana kwesimbi isina tsvina, kazhinji kutaura, simbi isina tsvina inofanira kunge iine zvinopfuura 12% chromium.
347 simbi isina tsvina igiredhi muASTM A240/240M chiyero. Icho chinonzi austenitic simbi isina tsvina. MuChina, giredhi rinoenderana re347 simbi isina tsvina ndeye 0Cr18Ni11Nb. Nekuda kwekuti ine humwe huwandu hweniobium (Nb) element, 347 simbi isina tsvina ine yakanaka yekupikisa crystallographic corrosion, uye ine simba rakati wandei uye plastiki. 347 simbi isina tsvina ine yakanaka oxidation kuramba uye weldability mumhepo iri pasi pe800 ° C.
347 Stainless simbi ine yakanaka corrosion resistance mumakemikari media senge acids, alkalis, uye salt solutions. Iyo yakanyanya-tembiricha yekushushikana inoputika kuita uye yakakwirira-tembiricha inokambaira inopikisa stress mechanical zvimiro zve347 Stainless simbi zviri nani pane izvo zve.304 simbi isina tsvina. Nzvimbo dzekushandisa dzayo dzakafara kwazvo, senge ndege, kugadzirwa kwemagetsi, chemistry, petrochemical indasitiri, chikafu, kugadzira mapepa,exhaust akawanda, nezvimwewo.
Iyo kemikari ye347 simbi isina tsvina yakaita seiyi:
Carbon C: ≤0.08%
Silicon Si: ≤1.00%
Manganese Mn: ≤2.00%
Phosphorus P: ≤0.045%
Sulfur S: ≤0.030%
Chromium Cr: 17.00 ~ 19.00
Nickel Ni: 9.00 ~ 12.00
Niobium Nb: ≥10*C %
Iyo mechanic properties ye347 Stainless steel (solid solution state) ndeiyi inotevera:
Goho simba (N/mm2) ≥205
Kusimba kwesimba (N/mm2) ≥515
Elongation (%) ≥ 40
Kuoma: HB: ≤187
Nguva yekutumira: Zvita-09-2023