Combined mechanical and thermal processing method for...

Details Combined mechanical and thermal processing method for... Combined mechanical and thermal processing method for...

C - Chemistry, Metallurgy

21

D

148/34

C21D 8/00 (2006.01) B21B 17/14 (2006.01) C21D 8/10 (2006.01)

Patent

CA 1072864

ABSTRACT OF THE DISCLOSURE A molten steel, which may optionally contain boron to increase hardenability is poured into ingot molds, bloomed and primary hot worked to a mother tube of intermediate cross-section. Before cooled down below about 800°C., the mother tube is reheat- ed to about 930°C., removed of scale from the outside surface thereof, secondary hot worked to a pipe of final dimensions with a reduction, measured in terms of equivalent strain as expressed by the following formula, of not less than .epsilon. = 0.02 for removal of scale from the inside surface of the pipe, and then directly quenched to produce a finished seamless steel pipe having far better shape at a higher heat efficiency than in the conventional process. Better toughness is effected when the degree of second- ary hot work is not smaller than .epsilon. = 0.20. Image

264600

Affiliated with

Also associated with

Rating

Combined mechanical and thermal processing method for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Combined mechanical and thermal processing method for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combined mechanical and thermal processing method for... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-66421