POPPET VALVE AND METHOD FOR MANUFACTURING SAME

[Abstract] Stiffness strength of a seat surface in a poppet valve produced by forging is made to be more uniform. [Problem] [Solution] There is provided a method for manufacturing a poppet valve 10, in which a valve head 14 having a seat surface N is provided in one end of a valve stem 12 in a longi...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	MIKAMI, Maiku, KURAHASHI, Kazunori
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACTUATING-FLOATS BLASTING CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY COCKS COMBINED OPERATIONS CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES DEVICES FOR VENTING OR AERATING ENGINE PLANTS IN GENERAL ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MACHINE TOOLS MACHINES OR ENGINES IN GENERAL MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY OTHER WORKING OF METAL PERFORMING OPERATIONS PUNCHING METAL STEAM ENGINES TAPS THERMAL INSULATION IN GENERAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS UNIVERSAL MACHINE TOOLS VALVES WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	[Abstract] Stiffness strength of a seat surface in a poppet valve produced by forging is made to be more uniform. [Problem] [Solution] There is provided a method for manufacturing a poppet valve 10, in which a valve head 14 having a seat surface N is provided in one end of a valve stem 12 in a longitudinal direction, by forging, wherein an intermediate valve head 14' in a intermediate valve products 10' is provided with a pressing protrusions 15 in a region serving as the seat surface N after forging, the pressing protrusions 15 having a peak 15a positioned in a normal direction K2 of the seat surface N on a basis of the seat surface N of the forged valve head 14, in a sectional view the peak 15a of the pressing protrusions 15 is positioned on a normal line K2 passing a reference point P3 set on a virtual line (line segment K) connecting a base point P1 in an inner diameter side and a base point P2 in an outer diameter side of the seat surface N, and as viewed in a center axis X1 direction of the valve stem 12, a position of the reference point P3 is set such that a relation between a length L1 from the base point P1 in the inner diameter side to the reference point P3 and a length L2 from the base point P2 in the outer diameter side to the reference point P3 meets a formula of L1/L2 ‰¤ 0.5.