Pipes and tubular conduits – Distinct layers – Bonded to each other
Patent
1998-02-23
2000-06-06
Morris, Lesley D.
Pipes and tubular conduits
Distinct layers
Bonded to each other
138177, F16L 918
Patent
active
06070618&
ABSTRACT:
A sufficient anti-cavitation performance can be performed even when a high pressure fuel equal to or more than the value expected in the prior art, an extension can be recovered by a heating operation even when a pipe extension is processed to a limit of an extension so as to make a formation of the connection head portion in a connection end portion easy, and a necessary bending process at a time of arranging near a diesel engine can be performed. In a high pressure fuel injection pipe constituted by forming a connection head portion having a frusto-conical shape, a circular arc shape or a counter shape in a connection end portion comprising a double metal pipe constituted by press-fitting a thin internal pipe to an external pipe made by a thick steel pipe, the internal pipe is made of an austenitic stainless steel pipe thermally spring refined, and in a method of manufacturing a high pressure fuel injection pipe, the method comprises a step of inserting an internal pipe made of a thin austenitic stainless steel pipe to an external pipe made of a thick steel pipe, a step of forming a double metal pipe by press-fitting both pipes by means of a pipe extension process, a step of heating a whole of the double metal pipe so as to thermally spring refining the internal pipe made of a stainless steel pipe, and a step of forming a connection head portion having a frusto-conical shape, a circular arc or a counter shape in the double metal pipe connecting end portion.
REFERENCES:
patent: 4134430 (1979-01-01), Mukasa et al.
patent: 4266577 (1981-05-01), Usui
patent: 5109888 (1992-05-01), Usui
patent: 5265793 (1993-11-01), Usui et al.
patent: 5402829 (1995-04-01), Takikawa et al.
Casella Anthony J.
Hespos Gerald E.
Morris Lesley D.
Usui Kokusai Sangyo Kaisha Limited
LandOfFree
High pressure fuel injection pipe and a method of manufacturing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High pressure fuel injection pipe and a method of manufacturing , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High pressure fuel injection pipe and a method of manufacturing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2205970