YOUNG STAR MOTOR CO.,LTD.
YOUNG STAR MOTOR CO.,LTD. Provides quality products and the service, let the customer be satisfied
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| O.E. NUMBER | IN/EX | DIMENSION |
| D×d×L(mm) | ||
| 13711-1012 | IN | 57.0×12.0×170.0 |
| 13711-1380A | ||
| 13711-1390A | ||
| 13711-1420A | ||
| 13711-1450A | ||
| 13711-1451A | ||
| 13711-1560A | ||
| 13711-1561A | ||
| 13715-1012 | EX | 53.0×12.0×170.0 |
| 13715-1013A |
Material of Engine Valves
Normal material: INLET VALVE IS SUH1(40Cr) ; EXHAUST VALVE IS SUH3(4Cr9Si2).
Good material: INLET VALVE IS SUH3(4Cr9Si2) ; EXHAUST VALVE IS SUH35(21-4N)
Technology
1.Forging blank
2.800 ~1200Centigrade high temperature treatment
3.The inlet end of high-frequency quenching hardness, improve the tail, tail HRC hardness up to 48 ° ~55°, reduce end fracture and shorten service life
4.Surface nitridation processing, processing depth 0.008mm, nitriding colored grey, rust and increase the surface hardnes
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