Tube shell for manufacturing a seamless steel pipe and a...

Details Tube shell for manufacturing a seamless steel pipe and a... Tube shell for manufacturing a seamless steel pipe and a...

2007-08-28

2007-08-28

Tolan, Ed (Department: 3725)

Metal deforming

By use of tool acting during relative rotation between tool...

During rotation of work

C072S700000, C148S325000

Reexamination Certificate

active

11312934

ABSTRACT:
A pierced shell of an austenitic stainless steel having a good inner surface condition is provided, and a means is established which can perform mass production on an industrial scale of a good quality seamless steel pipe of stainless steel. An austenitic stainless steel billet with a P content of at most 0.040% and an S content of at most 0.020% is pierced under conditions such that the pipe expansion ratio H (outer diameter of shell/diameter of billet to be worked) satisfies the following equation to obtain a tube shell of an austenitic stainless steel. {P(%)/(0.025×H−0.01)}2+{S(%)/(0.015×H−0.01)}2≦1. When manufacturing a seamless steel pipe of an austenitic stainless steel, the above-described shell is rolled to form a pipe.

REFERENCES:
patent: 2536033 (1951-01-01), Clarke, Jr.
patent: 5636542 (1997-06-01), Yamakawa et al.
patent: 5713234 (1998-02-01), Yamakawa et al.
patent: 6051081 (2000-04-01), Valle Echevarria et al.
patent: 19516595 (1996-11-01), None
patent: 60-114554 (1985-06-01), None
patent: 63-299805 (1988-12-01), None
patent: 01228603 (1989-09-01), None
patent: 2000-301212 (2000-10-01), None
patent: 2001-049400 (2001-02-01), None
patent: 2001-162306 (2001-06-01), None

Affiliated with

Also associated with

Rating

Tube shell for manufacturing a seamless steel pipe and a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tube shell for manufacturing a seamless steel pipe and a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tube shell for manufacturing a seamless steel pipe and a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3896098