C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
255/56, 148/34.1
C21D 9/08 (2006.01) C21D 6/00 (2006.01) C21D 8/10 (2006.01) C21D 9/14 (2006.01)
Patent
CA 1334572
In a process for the production of tubular bodies that are resistant to stress corrosion cracking, in particular non- magnetizable drill stems and rod sections of austenitic steels, after solution treatment, quenching, and after deformation at a temperature of under 500°C, in order to increase the mechanical properties of the material, and after processing and incorporation of a drilling, the body is heated to a temperature of 220 to 600°C, at least to temperature equalization with a temperature differential of at most 10°C in the walls of the body. The body is then maintained for at most a time t in minutes at a temperature T in degrees Celsius in accordance with the expression t = 10-(T-638)/50 after which it is cooled by the increased withdrawal of thermal energy, at least from the internal surface of the tubular body and the cooled surface exhibits a temperature drop of at least 100°C/min from the starting temperature to the half value between the starting temperature and room temperature.
607498
Marks & Clerk
Schoeller-Bleckmann Gesellschaft M.b.h.
LandOfFree
Process for the production of tubular bodies does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the production of tubular bodies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of tubular bodies will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1325416