Piercing-rolling method and piercing/rolling apparatus for seaml

Details Piercing-rolling method and piercing/rolling apparatus for seaml Piercing-rolling method and piercing/rolling apparatus for seaml

1995-05-05

1997-06-10

Larson, Lowell A.

Metal deforming

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

During rotation of work

B21B 1904

Patent

active

056365420

ABSTRACT:
A method for manufacturing seamless steel tubes by the Mannnesmann tube making process wherein a billet is passed through a piercer and the center of the billet is pierced through to obtain a hollow shell. A pair of disk rolls are disposed to incline by a skew angle .delta. with respect to a pass line toward cone-type main roll located at the entry side, where a material to be rolled enters into the disk roll sliding face, thereby to become unparallel with the outlet face angle of the main roll, while the skew angle .delta. is set to satisfy the following conditions related to the skew angle .delta., the inlet face angle .theta.1 and the outlet face angle .theta.2 of the main roll, thereby to obtain expansion ratio of outer diameter of 1.15 or higher value.

REFERENCES:
"Investigation of Wall Thickness Variation of Tubes in Skew Rolling", Stal in English, Aug., 1970, p. 632-635.

Affiliated with

Also associated with

Rating

Piercing-rolling method and piercing/rolling apparatus for seaml does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Piercing-rolling method and piercing/rolling apparatus for seaml, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piercing-rolling method and piercing/rolling apparatus for seaml will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-757915