420 SSIntambo yokutshiza eshushu (yentsimbi engagqwaliyo) sisixhobo esikumgangatho ophezulu esenzelwe ukusetyenziswa kwe-arc spray. Yaziwa ngokumelana kwayo nokugqwala, ubulukhuni obuphezulu, kunye nokumelana nokuguguleka okuhle, i-420 SS yintsimbi engagqwali ye-martensitic enika ukhuseleko oluqinileyo kumphezulu. Le ntambo isetyenziswa kakhulu kumashishini afana ne-petrochemical, ukuveliswa kwamandla, iimoto, kunye nolwandle ukuphucula ukuqina kunye nobomi bezinto ezibalulekileyo. Intambo yokutshiza eshushu ye-420 SS ifanelekile kwizicelo ezifuna uqweqwe oluqinileyo, olumelana nokuguguleka olune-corrosion elinganiseleyo.
Ukulungiswa komphezulu ngendlela efanelekileyo kubalulekile ekufumaneni iziphumo ezilungileyo ngentambo yokutshiza yobushushu ye-420 SS. Umphezulu oza kugqunywa kufuneka ucocwe ngononophelo ukuze kususwe izinto ezingcolisayo ezifana namafutha, ioyile, ukungcola, kunye nee-oxide. Ukuqhumisa igrit nge-aluminium oxide okanye i-silicon carbide kuyacetyiswa ukuze kufunyanwe uburhabaxa bomphezulu obuyi-50-75 microns. Umphezulu ococekileyo norhabaxa uphucula ukunamathela kwengubo yokutshiza yobushushu, nto leyo ekhokelela ekusebenzeni ngcono nasekuhlaleni ixesha elide.
| I-elementi | Ulwakhiwo (%) |
|---|---|
| Ikhabhoni (C) | 0.15 – 0.40 |
| I-Chromium (Cr) | 12.0 – 14.0 |
| IManganese (Mn) | Ubuninzi be-1.0 |
| I-Silicon (Si) | Ubuninzi be-1.0 |
| I-Phosphorus (P) | Ubuninzi be-0.04 |
| I-Sulfur (S) | Ubuninzi obuyi-0.03 |
| Intsimbi (Fe) | Ibhalansi |
| Ipropati | Ixabiso eliqhelekileyo |
|---|---|
| Uxinano | 7.75 g/cm³ |
| Indawo yokunyibilika | 1450°C |
| Ukuqina | 50-58 HRC |
| Amandla eBond | I-55 MPa (8000 psi) |
| Ukumelana ne-Oxidation | Kulungile |
| Ukuqhuba kweThermal | 24 W/m·K |
| Uluhlu Lobukhulu Bokugquma | 0.1 – 2.0 mm |
| Ukugquma | < 3% |
| Ukumelana nokunxiba | Phezulu |
Intambo yokutshiza yobushushu ye-420 SS sisisombululo esilungileyo sokuphucula iipropati zomphezulu wezinto ezivezwe kukuguguleka kunye nokugqwala okuphakathi. Ubulukhuni bayo obuphezulu kunye nokumelana kakuhle nokuguguleka kwenza ukuba ifaneleke kwizicelo ezifuna ugqubuthelo oluhlala ixesha elide noluhlala ixesha elide. Ngokusebenzisa intambo yokutshiza yobushushu ye-420 SS, amashishini anokuphucula kakhulu ubomi benkonzo kunye nokuthembeka kwezixhobo kunye nezinto zawo.
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