High Quality Common Rail Diesel / Roj Injector NozzleDLLA145P574
cov khoom nthuav dav
| Khoom npe | TIAB SA 145P574 |
| Cav Qauv | / |
| Daim ntawv thov | / |
| MOQ | 6 pcs / Negotiated |
| Ntim | Lub thawv dawb ntim lossis cov neeg siv khoom xav tau |
| Lub sijhawm ua haujlwm | 7-15 hnub ua haujlwm tom qab paub meej tias kev txiav txim |
| Kev them nyiaj | T / T, PAYPAL, raws li koj nyiam |
Kev tshuaj xyuas yog vim li cas lub injector nozzle daig nyob rau hauv lub injectors (Part 2)
2.2 Nto roughness thiab hardness ntsuas tau Qhov saum npoo roughness ntawm rab koob valve yog ntsuas, thiab qhov yuav tsum tau roughness ntawm lub koob valve yog 61HRC ~ 65HRC rau qhov yuav tsum tau hardness nto. Lub roughness ntawm rab koob valve nrog steel stamp tooj HHM yog Ra0.03, Rt0.34, thiab lub hardness saum npoo yog 60.4HRC ~ 60.7HRC; Lub koob valve nrog steel stamp tooj HD yog Ra0.02, Rt0.37, thiab qhov tawv tawv yog 62.3HRC. Qhov roughness thiab hardness ntawm ob rab koob li qub xa mus rau kev soj ntsuam tag nrho ua tau raws li tus qauv tsim. Tom qab lub nozzle tau dissected, lub puab qhov roughness yog ntsuas. Lub puab qhov roughness yuav tsum tau ntawm lub nozzle yog 0.05Rt0.8. Valve Ra0.07～1.16, Rt0.82～1.79. Lub puab qhov roughness ntawm ob lub nozzles xa mus rau kev soj ntsuam tsis tau raws li qhov yuav tsum tau tsim.
2.3 Nto hardness ntsuas thiab metallographic tsom xam Cov saum npoo hardness ntawm rab koob valve yuav tsum yog 61HRC-65HRC, tsis pub dawb bainite, thiab cov residual austenite tsis pub tshaj 5%. Lub hardness ntawm lub koob valve nrog thawj tus naj npawb HHM yog 62.9HRC ~ 63.6HRC, cov nplej loj yog 10, thiab qib ntawm superheat yog 2; lub hardness ntawm rab koob valve nrog thawj tus hlau stamp tooj HD yog 62.4HRC ~ 63.4HRC, cov nplej loj yog 9, thiab cov degree ntawm superheat yog 2. Lub hardness ntawm ob rab koob li qub tag nrho raws li cov qauv tsim.
