High Quality Diesel Fuel Injector Nozzle DN4PD57 yeDenso Toyota Injini Zvikamu

Ongororo yekuti nei jekiseni muromo wakanamatira mumajekiseni (chikamu 2)

2.2 Kukasharara kwepamusoro uye kuyerwa kwehukukutu Hukukutu hwevharuvhu yetsono hunoyerwa uye kukwasharara kunodiwa kwevharuvhu yetsono ndeye 61HRC～65HRC yezvinodiwa zvekuoma kwepasi. Hushasha hwevharuvhu yetsono ine chitambi chesimbi nhamba HHM iRa0.03 Rt0.34, uye kuoma kwepamusoro i60.4HRC～60.7HRC; vharafu yetsono ine chitambi chesimbi nhamba HD iRa0.02, Rt0.37, uye kuoma kwepamusoro i62.3HRC. Kushata uye kuoma kwemavharuvhu maviri etsono akaunzwa kuti aongororwe ese anosangana nezvinodiwa zvekugadzira. Mushure mekunge muromo waparadzaniswa, mukati megomba roughness yakayerwa. Iyo mukati megomba roughness inodiwa yemuromo yaive 0.05Rt0.8. Valve Ra0.07～1.16, Rt0.82～1.79. Iko mukati megomba roughness yezviputi zviviri zvakatumirwa kuti zviongororwe hazvina kuzadzisa zvinodiwa zvekugadzira.

2.3 Kuyera kuoma kwepamusoro uye metallographic analysis results Kuoma kwepamusoro kwevhavha yetsono kunodiwa kuva 61HRC-65HRC, bainite yakasununguka haibvumirwi uye yakasara austenite haipfuuri 5%. Kuoma kwevharuvhu yetsono ine nhamba yekutanga yechitambi HHM ndeye 62.9HRC～63.6HRC, saizi yezviyo i10, uye dhigirii yekupisa kukuru i2; kuoma kwevhavha yetsono ine nhamba yekutanga yesimbi yesimbi HD ndeye 62.4HRC～63.4HRC, saizi yezviyo ndeye 9 uye dhigirii yekupisa kukuru ndeye 2. Kuoma kwemavhavha maviri etsono zvose zvinosangana nezvinodiwa zvekugadzira.