FR2366368A1 - Procede de detensionnement de tubes sans soudure - Google Patents
Procede de detensionnement de tubes sans soudureInfo
- Publication number
- FR2366368A1 FR2366368A1 FR7629655A FR7629655A FR2366368A1 FR 2366368 A1 FR2366368 A1 FR 2366368A1 FR 7629655 A FR7629655 A FR 7629655A FR 7629655 A FR7629655 A FR 7629655A FR 2366368 A1 FR2366368 A1 FR 2366368A1
- Authority
- FR
- France
- Prior art keywords
- tubes
- relaxation process
- stress relieving
- weldless tube
- tube relaxation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/30—Finishing tubes, e.g. sizing, burnishing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49805—Shaping by direct application of fluent pressure
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
L'invention concerne un procédé de détensionnement de tubes sans soudure ayant subi une opération de dressage. On soumet, pendant une durée au moins égale à 3 minutes, les tubes maintenus à une température voisine de la température ambiante, à une pression interne comprise entre 0,8 Pc et Pc, Pc étant la pression critique au-delà de laquelle le tube subit une déformation plastique sur toute son épaisseur. L'invention s'applique en particulier au détensionnement de tubes cintrés de générateurs de vapeur de réacteurs nucléaires.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7629655A FR2366368A1 (fr) | 1976-10-01 | 1976-10-01 | Procede de detensionnement de tubes sans soudure |
GB38408/77A GB1556316A (en) | 1976-10-01 | 1977-09-14 | Process for reducing stresses in seamless tubes |
ZA00775588A ZA775588B (en) | 1976-10-01 | 1977-09-19 | A process for reducing stresses in seamless tubes which have undergone a straightening operation |
US05/835,853 US4174233A (en) | 1976-10-01 | 1977-09-22 | Expansion process for reducing the stresses in a seamless metal tube |
SE7710893A SE7710893L (sv) | 1976-10-01 | 1977-09-29 | Forfarande for avspenning av svetsfria ror |
DE19772744120 DE2744120A1 (de) | 1976-10-01 | 1977-09-30 | Verfahren zum entspannen nahtloser rohre |
ES462795A ES462795A1 (es) | 1976-10-01 | 1977-09-30 | Procedimiento de alivio de tensiones de tubos metalicos sin soldadura que han sufrido una operacion de enderezamiento. |
BE181374A BE859276A (fr) | 1976-10-01 | 1977-09-30 | Procede de detensionnement de tubes sans soudure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7629655A FR2366368A1 (fr) | 1976-10-01 | 1976-10-01 | Procede de detensionnement de tubes sans soudure |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2366368A1 true FR2366368A1 (fr) | 1978-04-28 |
FR2366368B1 FR2366368B1 (fr) | 1980-09-12 |
Family
ID=9178310
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7629655A Granted FR2366368A1 (fr) | 1976-10-01 | 1976-10-01 | Procede de detensionnement de tubes sans soudure |
Country Status (8)
Country | Link |
---|---|
US (1) | US4174233A (fr) |
BE (1) | BE859276A (fr) |
DE (1) | DE2744120A1 (fr) |
ES (1) | ES462795A1 (fr) |
FR (1) | FR2366368A1 (fr) |
GB (1) | GB1556316A (fr) |
SE (1) | SE7710893L (fr) |
ZA (1) | ZA775588B (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19600877A1 (de) * | 1996-01-12 | 1997-07-17 | Budenheim Rud A Oetker Chemie | Flammschutzmittel und deren Verwendung |
CN113319208A (zh) * | 2021-04-25 | 2021-08-31 | 东莞材料基因高等理工研究院 | 一种消除冷拔管残余应力的方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1285489B (de) * | 1957-08-16 | 1968-12-19 | Avesta Jernverks Ab | Verfahren zur Herstellung von aus zusammengeschweissten Teilen bestehenden Druckgefaessen aus Stahl |
US3343249A (en) * | 1966-07-15 | 1967-09-26 | Breit Eng Inc | Method of making stress-relieved metal tanks |
US3535484A (en) * | 1967-05-26 | 1970-10-20 | American Cast Iron Pipe Co | Method of improving physical properties of electric resistance welded steel pipe |
US3817796A (en) * | 1970-06-30 | 1974-06-18 | Martin Marietta Corp | Method of increasing the fatigue resistance and creep resistance of metals and metal body formed thereby |
JPS5431445B2 (fr) * | 1974-02-04 | 1979-10-06 |
-
1976
- 1976-10-01 FR FR7629655A patent/FR2366368A1/fr active Granted
-
1977
- 1977-09-14 GB GB38408/77A patent/GB1556316A/en not_active Expired
- 1977-09-19 ZA ZA00775588A patent/ZA775588B/xx unknown
- 1977-09-22 US US05/835,853 patent/US4174233A/en not_active Expired - Lifetime
- 1977-09-29 SE SE7710893A patent/SE7710893L/xx not_active Application Discontinuation
- 1977-09-30 DE DE19772744120 patent/DE2744120A1/de not_active Withdrawn
- 1977-09-30 BE BE181374A patent/BE859276A/fr unknown
- 1977-09-30 ES ES462795A patent/ES462795A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1556316A (en) | 1979-11-21 |
DE2744120A1 (de) | 1978-04-06 |
ZA775588B (en) | 1978-07-26 |
ES462795A1 (es) | 1978-07-01 |
US4174233A (en) | 1979-11-13 |
BE859276A (fr) | 1978-03-30 |
FR2366368B1 (fr) | 1980-09-12 |
SE7710893L (sv) | 1978-04-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |