High Quality Common Rail Diesel / Roj Injector NozzleDLLA148P062

Kev tshuaj xyuas yog vim li cas lub injector nozzle daig hauv cov injectors. (part 3)

2.3.2 Qhov hardness ntawm lub nozzle yog 720HV1 ~ 780HV1, lub thickness ntawm carburized txheej yog 0.6 hli ~ 0.8 hli, thiab cov austenite khaws cia yuav tsum tsis pub tshaj 15%. Lub hardness ntawm qhov pib steel stamp tooj HHM nozzle yog HV0.2588, uas yog qis dua li cov qauv tsim, lub thickness ntawm carburized txheej yog 0.6 hli, qib martensite yog 2, thiab cov austenite khaws cia yog qib 1; Lub hardness ntawm qhov pib tus lej HD nozzle kuj tseem qis ntawm HV1615 Raws li cov qauv tsim ntawm HV1720, lub thickness ntawm carburized txheej yog 0.86 hli, qib ntawm martensite yog qib 4, thiab qib ntawm austenite yog qib 3. . Lub puab qhov hardness ntawm ob lub nozzles tsis tau raws li qhov yuav tsum tau tsim. Cov khoom siv ntawm lub koob valve yog W6Mo5Cr4V2, lub teb chaws tus qauv yuav tsum tau C cov ntsiab lus yog 0.8% mus rau 0.9%, thiab V cov ntsiab lus yuav tsum yog 1.75% mus rau 2.20%. Qhov ntsuas thawj zaug tus lej HD koob valve C cov ntsiab lus yog 0.7%, V cov ntsiab lus yog 1.09%, thiab C thiab V cov ntsiab lus qis dua li cov qauv hauv lub tebchaws;

2.3.3 Cov ntsiab lus C ntawm thawj tus naj npawb HHM koob valve yog 0.72%, V cov ntsiab lus yog 1.19%, thiab cov ntsiab lus C thiab V qis dua li cov qauv hauv lub tebchaws. Lwm cov ntsiab lus alloy ntawm ob-koob valve yog nyob rau hauv qhov kev xav tau los ntawm lub teb chaws tus qauv. Cov khoom siv ntawm lub nozzle yog 18Cr2Ni4WA, C cov ntsiab lus ntawm thawj lub thwj lej HD nozzle yog 0.20%, thiab lub teb chaws tus qauv xav tau 0.13% mus rau 0.19%, thiab cov ntsiab lus ntawm tag nrho cov alloy ntsiab ntawm lub nozzle yog nyob rau hauv ntau yam. xav tau los ntawm lub teb chaws tus qauv. Tag nrho cov ntsiab lus alloying ntawm thawj zaug steel stamp tooj HHM nozzle yog nyob rau hauv ntau qhov xav tau los ntawm lub teb chaws tus qauv.