AR001655A1 - Procedure for manufacturing seamless steel tubes and provision for the use of said procedure - Google Patents
Procedure for manufacturing seamless steel tubes and provision for the use of said procedureInfo
- Publication number
- AR001655A1 AR001655A1 AR33621196A AR33621196A AR001655A1 AR 001655 A1 AR001655 A1 AR 001655A1 AR 33621196 A AR33621196 A AR 33621196A AR 33621196 A AR33621196 A AR 33621196A AR 001655 A1 AR001655 A1 AR 001655A1
- Authority
- AR
- Argentina
- Prior art keywords
- temperature
- billet
- steel tube
- procedure
- transformation
- Prior art date
Links
Landscapes
- Metal Rolling (AREA)
- Continuous Casting (AREA)
Abstract
La presente invención tiene por finalidad proveer un procedimiento para manufacturar tubos de acero sin costura que tienen características superioresa los productos convencionales mediante el uso de un proceso simple y una disposiciónsimpl e a costos reducidos; el procedimiento de manufacturación dela presente invención se caracteriza por comprender las etapas operativas 1) a 8), las cuales están dispuestas en forma secuencial, y las etapas odispositivos para la producción detochos a productos terminados, están conectadas en la misma línea contínua de manufacturación: 1)producir un tochoredondo mediante colada contínua; 2) enfríar el tocho a una temperatura no mayor que la temperatura de transformaciónA(r1); 3) cal entar el tocho a unatemperatura que permita el punzonado del tocho; 4) punzonar el tocho para obtener una camisa o cuerpo hueco a un régimen de deformación no mayor que200/seg; 5) conformar un tubo de acero mediante elestiramiento y laminado a las dimensiones finales de la camisa o cuerpo hueco usando una laminadora deestiramiento contínua y una laminadora de terminación que están conectadas directamente una a otra, a un régimen promedio de deformación, unarelaciónpredeterminad a de reducción y una temperatura predeterminada de terminación; 6) recristalizar el tubo de acero a una temperatura no menor que la temperatura detransformación A(r3); 7) templar el tubo de acero desde una temperatura no menorque la temperatura de transformación A(r3); y 8) revenir el tubo deacero. También se proponen dos realizaciones de un dispositivo para poner en práctica el procedimiento.The present invention aims to provide a method for manufacturing seamless steel tubes that have superior characteristics to conventional products by using a simple process and a simple arrangement at reduced costs; The manufacturing process of the present invention is characterized by comprising the operating stages 1) to 8), which are arranged sequentially, and the stages or devices for the production of all of the finished products, are connected in the same continuous manufacturing line: 1) produce a round billet by continuous casting; 2) cooling the billet to a temperature not higher than the transformation temperatureA (r1); 3) heat the billet to a temperature that allows punching of the billet; 4) punching the billet to obtain a sleeve or hollow body at a deformation rate of no more than 200 / sec; 5) Shaping a steel tube by stretching and rolling to the final dimensions of the jacket or hollow body using a continuous stretch rolling mill and a finishing rolling mill that are directly connected to each other, at an average rate of deformation, a predetermined reduction ratio and a predetermined termination temperature; 6) recrystallize the steel tube at a temperature not less than the transformation temperature A (r3); 7) temper the steel tube from a temperature not less than the transformation temperature A (r3); and 8) temper the steel tube. Two embodiments of a device for practicing the procedure are also proposed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AR33621196A AR001655A1 (en) | 1996-04-18 | 1996-04-18 | Procedure for manufacturing seamless steel tubes and provision for the use of said procedure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AR33621196A AR001655A1 (en) | 1996-04-18 | 1996-04-18 | Procedure for manufacturing seamless steel tubes and provision for the use of said procedure |
Publications (1)
Publication Number | Publication Date |
---|---|
AR001655A1 true AR001655A1 (en) | 1997-11-26 |
Family
ID=37027979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AR33621196A AR001655A1 (en) | 1996-04-18 | 1996-04-18 | Procedure for manufacturing seamless steel tubes and provision for the use of said procedure |
Country Status (1)
Country | Link |
---|---|
AR (1) | AR001655A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7416617B2 (en) | 2002-10-01 | 2008-08-26 | Sumitomo Metal Industries, Ltd. | High strength seamless steel pipe excellent in hydrogen-induced cracking resistance |
US8601852B2 (en) | 2006-03-28 | 2013-12-10 | Nippon Steel & Sumitomo Metal Corporation | Method of manufacturing seamless pipe and tube |
US9017494B2 (en) | 2004-01-30 | 2015-04-28 | Nippon Steel & Sumitomo Metal Corporation | Method for producing seamless steel pipe for oil wells excellent in sulfide stress cracking resistance |
-
1996
- 1996-04-18 AR AR33621196A patent/AR001655A1/en active IP Right Grant
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7416617B2 (en) | 2002-10-01 | 2008-08-26 | Sumitomo Metal Industries, Ltd. | High strength seamless steel pipe excellent in hydrogen-induced cracking resistance |
US9017494B2 (en) | 2004-01-30 | 2015-04-28 | Nippon Steel & Sumitomo Metal Corporation | Method for producing seamless steel pipe for oil wells excellent in sulfide stress cracking resistance |
US8601852B2 (en) | 2006-03-28 | 2013-12-10 | Nippon Steel & Sumitomo Metal Corporation | Method of manufacturing seamless pipe and tube |
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Legal Events
Date | Code | Title | Description |
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FG | Grant; registration |