Method of producing high strength sucker rod coupling

Metal treatment – Process of modifying or maintaining internal physical... – Producing or treating layered – bonded – welded – or...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

148902, 166105, 1662413, C21D 900

Patent

active

053342682

ABSTRACT:
A sucker rod coupling 10 having a high ultimate tensile strength, resistance to corrosion, and resistance to surface cracking arising out of a method of making the sucker rod coupling 10, which employs a five-step process of forming a coupling 10. First, a hollow cylindrical core 12 from a heat treatable steel is formed. Second, a thin coating 18 of metallic alloy is applied to the outer surface of the core 12. Third, the core 12 is heat treated. Fourth, threads 20 are partially cut in the inner surface of the core 12. Fifth, the threads 20 are cold worked to transform the partially cut threads 20 into finished threads 20 and to place the thread roots 22 in compression.

REFERENCES:
patent: 3322580 (1967-05-01), Haynes
patent: 4741785 (1988-05-01), Welschof
patent: 4757861 (1988-07-01), Klyne
patent: 4871020 (1989-10-01), Rivas et al.
patent: 4905760 (1990-03-01), Gray
patent: 5196075 (1993-03-01), Jansen et al.
Dzhabarov, R. D., Eng. Abstract Khim. Neft. Mashinostr. (1) 1987, 22-3, (Russian).
LTV Energy Products, Production Equipment Division, DuraTech Products "LTV Premier Performance Couplings With Ground Outside Diameters," Oilfield Products, Engineering Product Bulletin No. 1.1.3.9 (May 1990).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method of producing high strength sucker rod coupling does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of producing high strength sucker rod coupling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing high strength sucker rod coupling will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-63149

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.