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Development of an API 5 L X 70 coil for the production of API pipes continuously welded by electric resistance; Desenvolvimento de bobina API 5 L X 70 para producao de tubos API soldados continuamente por resistencia eletrica

Abstract

The manufacturing of high strength ERW pipe, which applies the continuous forming process, is known to lead to a relevant economy in a productivity basis. The past few years shown a trend of changing on grade range, from the past X52 to the present X70. The manufacturing of the latter grades for coils are somehow difficult due to the high Bauschinger effect observed on ERW pipes with ferritic-perlitic microstructure, that results in pipes with yield strength much lower than in coils, as on limitations on rolling, where controlled rolling is not applied. In this work, acicular dispersed bainite was searched, in a way to reduce this effect after pipe forming. API 5L X70 coils, from USIMINAS, were processed including an intentional addition of Molybdenum in the range of 0.20%, together with Columbium and Vanadium (added as 0.050% average). (author)
Authors:
Lopes, Alexandre R; Cavalheiro, Benedito C [1] 
  1. CONFAB Tubos S.A., Sao Caetano do Sul, SP (Brazil)
Publication Date:
Jul 01, 1998
Product Type:
Conference
Reference Number:
EDB-01:019353
Resource Relation:
Conference: Rio Oil and Gas Expo and Conference 98, Rio de Janeiro, RJ (Brazil), 5-8 Oct 1998; Other Information: 5 refs., 6 figs., 2 tabs.; Published only in CD-ROM.; PBD: 1998; Related Information: In: Proceedings of the Rio Oil and Gas Expo and Conference 98, CD-ROM pages.
Subject:
02 PETROLEUM; 42 ENGINEERING; PETROLEUM; PETROLEUM INDUSTRY; PIPE JOINTS; PIPELINES; PIPES; WELDING; RESISTANCE WELDING
OSTI ID:
20136253
Research Organizations:
Instituto Brasileiro de Petroleo, Rio de Janeiro, RJ (Brazil); Regional Association of Oil and Natural Gas Companies in Latin American and the Caribbean, Montevideo (Uruguay)
Country of Origin:
Brazil
Language:
Portuguese
Other Identifying Numbers:
TRN: BR01B1026
Availability:
Available from the Library of the Brazilian Nuclear Energy Commission, Rio de Janeiro
Submitting Site:
BR
Size:
6 pages
Announcement Date:

Citation Formats

Lopes, Alexandre R, and Cavalheiro, Benedito C. Development of an API 5 L X 70 coil for the production of API pipes continuously welded by electric resistance; Desenvolvimento de bobina API 5 L X 70 para producao de tubos API soldados continuamente por resistencia eletrica. Brazil: N. p., 1998. Web.
Lopes, Alexandre R, & Cavalheiro, Benedito C. Development of an API 5 L X 70 coil for the production of API pipes continuously welded by electric resistance; Desenvolvimento de bobina API 5 L X 70 para producao de tubos API soldados continuamente por resistencia eletrica. Brazil.
Lopes, Alexandre R, and Cavalheiro, Benedito C. 1998. "Development of an API 5 L X 70 coil for the production of API pipes continuously welded by electric resistance; Desenvolvimento de bobina API 5 L X 70 para producao de tubos API soldados continuamente por resistencia eletrica." Brazil.
@misc{etde_20136253,
title = {Development of an API 5 L X 70 coil for the production of API pipes continuously welded by electric resistance; Desenvolvimento de bobina API 5 L X 70 para producao de tubos API soldados continuamente por resistencia eletrica}
author = {Lopes, Alexandre R, and Cavalheiro, Benedito C}
abstractNote = {The manufacturing of high strength ERW pipe, which applies the continuous forming process, is known to lead to a relevant economy in a productivity basis. The past few years shown a trend of changing on grade range, from the past X52 to the present X70. The manufacturing of the latter grades for coils are somehow difficult due to the high Bauschinger effect observed on ERW pipes with ferritic-perlitic microstructure, that results in pipes with yield strength much lower than in coils, as on limitations on rolling, where controlled rolling is not applied. In this work, acicular dispersed bainite was searched, in a way to reduce this effect after pipe forming. API 5L X70 coils, from USIMINAS, were processed including an intentional addition of Molybdenum in the range of 0.20%, together with Columbium and Vanadium (added as 0.050% average). (author)}
place = {Brazil}
year = {1998}
month = {Jul}
}