JPS589921A - Manufacture of seamless steel pipe for petroleum industry - Google Patents
Manufacture of seamless steel pipe for petroleum industryInfo
- Publication number
- JPS589921A JPS589921A JP57114761A JP11476182A JPS589921A JP S589921 A JPS589921 A JP S589921A JP 57114761 A JP57114761 A JP 57114761A JP 11476182 A JP11476182 A JP 11476182A JP S589921 A JPS589921 A JP S589921A
- Authority
- JP
- Japan
- Prior art keywords
- seamless steel
- steel pipe
- temperature
- manganese
- material used
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims description 17
- 239000010959 steel Substances 0.000 title claims description 17
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000003208 petroleum Substances 0.000 title claims description 4
- 238000000034 method Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000003303 reheating Methods 0.000 claims description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims 4
- 229910052748 manganese Inorganic materials 0.000 claims 4
- 239000011572 manganese Substances 0.000 claims 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 3
- 229910052799 carbon Inorganic materials 0.000 claims 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 2
- 229910052804 chromium Inorganic materials 0.000 claims 2
- 239000011651 chromium Substances 0.000 claims 2
- 229910052698 phosphorus Inorganic materials 0.000 claims 2
- 239000011574 phosphorus Substances 0.000 claims 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- PFRUBEOIWWEFOL-UHFFFAOYSA-N [N].[S] Chemical compound [N].[S] PFRUBEOIWWEFOL-UHFFFAOYSA-N 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 239000012535 impurity Substances 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 229910052720 vanadium Inorganic materials 0.000 claims 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010791 quenching Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、高級継目なし鋼管、と〈Ｋ石油産業に使用さ
れる継目なし鋼管を製造する方法であって、あらかじめ
加熱されたずんぐりしたインゴットに穴をあけ、完成パ
イプの肉厚にほぼ近い肉厚をもった中空体に引き伸ばし
、該中空体をＡ ｃ １点より５０°から１３０°高い
温度に再加熱し、完成パイプの直径まで長さ方向に圧延
加工し、しかるのち空冷することＫより継目なし鋼管を
製造する方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention is a method of manufacturing high-grade seamless steel pipes and seamless steel pipes used in the petroleum industry, which comprises drilling holes in pre-heated stubby ingots and producing finished pipes. Stretched into a hollow body with a wall thickness approximately close to that of A c , the hollow body is reheated to a temperature 50° to 130° higher than point A c , and rolled in the length direction to the diameter of the finished pipe, The present invention relates to a method of manufacturing seamless steel pipes by subsequently cooling them in air.
このような方法の１つが雑誌３ ＲＩｎｔｅｒｎａｔ−
ｉｏｎａｌの昭和５２年１月号にパイプ輪郭圧延法とし
て記載されていて、高級パイプ、とくに石油産業用のパ
イプの製造に実際に採用されている。しかし、この方法
で作られたパイプは、完成パイプの直ａｔで引つばり絞
り加工を行ない、室温まで冷却したあと改めてオーステ
ナイト化温度に加熱し、鋼材の組成に応じて油または水
の中に浸漬して焼き入れを行ない、しかるのち所豊の強
度に焼戻しすることが必要である。One such method is the magazine 3 RInternat-
It is described as a pipe contour rolling method in the January 1977 issue of IONAL, and is actually used in the production of high-grade pipes, especially pipes for the oil industry. However, pipes made using this method are drawn by drawing the finished pipe directly, cooled to room temperature, then heated again to the austenitizing temperature, and then immersed in oil or water depending on the composition of the steel material. It is necessary to immerse and harden it, and then temper it to the strength of Tokoro.
これらの特殊な要求条件を満たすため、熱処理によりパ
イプを硬化させるまえに１パイプを簡単することにより
調質することが必要である。To meet these special requirements, it is necessary to temper a pipe by simplifying it before hardening it by heat treatment.
パイプを熱間圧延す−るさい、圧延加熱の状態から焼入
れ硬化を行ない、これＫより焼入れのために必要な加熱
に要する費用を節約することは基本的にはすでに公知の
ことである。この方法によれば十分な強度を得ることが
できるが、靭性と伸びの特性の点で要求条件を満たすこ
とができないことがしばしばである。こρことは一般に
結晶粒子が粗大化したせいにされている。。In principle, it is already known that pipes can be hot-rolled and hardened by quenching from the hot state of rolling, thereby saving costs for the heating necessary for quenching. Although sufficient strength can be obtained using this method, the requirements in terms of toughness and elongation properties are often not met. This is generally attributed to coarsening of crystal grains. .
本発明の目的は、高級パイプを製造するにさいし、圧延
と調質のため室温から何回も加熱を行なうことを避ける
とともに１高い強度を保ちながら十分な靭性と伸びの特
性を確保するどとができるようにすることである。The purpose of the present invention is to avoid repeated heating from room temperature for rolling and tempering when manufacturing high-grade pipes, and to ensure sufficient toughness and elongation characteristics while maintaining high strength. The goal is to be able to do this.
上記の目的は、本発明によれば特許請求の範囲第１項に
記載されている方法により達成されたのである。The above object has been achieved according to the invention by the method defined in claim 1.
当初記載の種類の方法に関しすでに公開された公報には
約７００Ｃの温度、したがって鉄−炭素状態図中のＡｒ
１点より低い温度まで温度を下けることが開示されてい
る。しかし、この温度降下は実際は表面の急冷として実
施されているだけであって、パイプの容積全体を意識的
に調質変態させるものでもなく、実際に調質変態させた
ものでもな諭。したがって、本発明が意図しているＡｃ
１点より５０°から１３０°高いところまで再加熱する
ことＫよプ結晶粒子を微細化させるとこ名までＫはいた
っていない。しかして、本発明方法によれば、靭性と伸
びの特性を大幅に改善することがヤきる。このｔｌか、
本発明方法においては、中空体を完成パイプの直径に圧
態様沢延したあとＡｒ、点より約１００Ｃ下がった
温度Ｋ （ＡＰＩ中空体を急冷し、しかるのち徐々
に空冷するよ してｂうＫされている。Previously published publications relating to processes of the type originally described have a temperature of approximately 700C, and therefore an Ar temperature in the iron-carbon phase diagram.
Reducing the temperature to below one point is disclosed. However, this temperature drop is actually only carried out as a rapid cooling of the surface; it does not consciously transform the entire volume of the pipe, nor does it actually cause it to undergo thermal transformation. Therefore, the Ac
Reheating to a point 50° to 130° higher than the first point makes the crystal grains finer, but K does not reach this level. Therefore, according to the method of the present invention, the properties of toughness and elongation can be significantly improved. Is this tl?
In the method of the present invention, after the hollow body is pressure-rolled to the diameter of the finished pipe, the hollow body is quenched at a temperature of about 100 C below the point K (the API hollow body is rapidly cooled, and then gradually air-cooled to a point K). has been done.
本発明に係る製造方法は、特許請求の範囲第２項に記載
されている組成の鋼材に適用するのがとくに有利である
。この合金の組成の範囲にある鋼材を使用すれば、品質
等級Ｎ８０の石油掘削用パイプに要求される強度範囲に
確実に到達することができ、しかも焼入れ硬化とこれに
続く焼鈍を行なうために％別に加熱を行なって調質する
ことを必要としない。圧延加熱の状態からマルテンサイ
ト組織まで急冷し、しかるのち焼鈍する方法に比べ、引
張強度を同じＫした場合、本発明方法により作られたパ
イプの耐力と靭性と伸びを大幅に改善することができる
。The manufacturing method according to the present invention is particularly advantageously applied to steel materials having the compositions set forth in claim 2. The use of steel in the composition range of this alloy ensures that the strength range required for oil drilling pipes of quality class N80 is reached, and that the strength range required for quench hardening and subsequent annealing is reduced by %. There is no need for separate heating and refining. Compared to a method in which the pipe is rapidly cooled from a heated rolling state to a martensitic structure and then annealed, the yield strength, toughness, and elongation of the pipe made by the method of the present invention can be significantly improved when the tensile strength is kept at the same K. .
特許請求の範囲第３項と第４項は特許請求の変更態様を
限定したものである。どちらの変更芝って得られたパイ
プも、米国石油協会）の規格の品質等級Ｎ８０の基準に
合致乙。Claims 3 and 4 limit the modifications of the claims. Both modified pipes meet the quality grade N80 standard of the American Petroleum Institute.
Claims (1)
）Ｋ穴をあ妙、完成パイプの肉厚Ｋ １１は近い肉厚を
もった中空体に引き伸ばし、該中空体をＡｅｓ点より５
０°から１３０°高い温度に再加熱し、完成パイプの直
径まで長さ方向に圧延加工し、しかるのち空冷すること
により高級継目なし鋼管、とくに石油産業に使用される
継目なし鋼管を製造する方法であって、２．５分から６
分の間、空気ＫＴｏてて保持するととＫより引き伸ばし
加工後の中空体の温度をＡｒｔ点を下回った温度、もつ
とも低い場合でも５ｏｏｃどまりまで下げ、引き伸ばし
加工したものの長さの少なくとも約１．１倍から２．５
倍まで長さ方向に圧延加工し、しかるのちＡｒ１点を約
１００Ｃ下回った温度に水または水と空気の混合物を用
いて冷却するに先だって空冷を行なうことを特徴とする
方法。 １２３ ４８０ Ｎ／ｍ”から６５０ Ｎ／ｗａ” １
テノ耐カを有し、ＩＳＯＶ字形ノツチ試験片を使用し
て室温で測定して少なくと４３０Ｊの切欠き靭性を有す
る継目なし鋼管を製造する特許請求の範囲第１項記載の
方法であって、使用される鋼材が、 炭 素 ０．２５ − ０．４５．１マン
ガン ０．７ − １．７ −ト 素
０．３ − ０．５ チクロム ０．１ −０
．３ ％ パナジウＡ Ｏ，０？ −０，１４％窒
素 ０ − ０．０１４％通常の不純
物 残）鉄 よシ成ることを特徴とする特許 （３）下のほうの極限値と同じかまたはこれよ）若干上
回った耐力を有する継目なし鋼管を製造する特許請求の
範囲第２項記載の方法であって、使用される鋼材が下の
ほうの値に相等した量またはこれより若干多くの量炭素
とマンガンかつ／ｌたはクロムを含有していることを特
徴とする方法。 （４）上の＃１うの極限値と同じかまたはこれに近い耐
力を有する継目なし鋼管を製造する特許請求の範囲第２
項記載の方法であって、使用される鋼材が上のほうの値
に相当した量またはこれに近い貴縦索とマンガンかつ／
またはクロムを含有していることを％徴とする方法。 （５３５２ＯＮ／■３の耐力を有する継目なし鋼管を製
造する特許請求の範囲第２項記載の方法であって、使用
される鋼材が、 炭 素 ０．３８ − ０．４．２ ％
マンガン １．４５ − １．６５ ％珪 素
Ｑ、３ − ０．５ ｆｂり ロ
ム ０．０１５ − ０．２０
％バナジウＡ ０．０８ − ０．１ ％
アルミニウム ０．０２ − ０．０４ ％窒
素 ０．０１２％ｔで硫 黄
０．０２ ％ 燐 ０．０２５ ％を含有している
ことを特徴とする方法。[Scope of Claims] (1) A pre-heated stubby ingot) is drawn into a hollow body with a wall thickness close to K11 of the completed pipe, and the hollow body is
A method for producing high-grade seamless steel pipes, especially seamless steel pipes used in the petroleum industry, by reheating from 0° to 130° higher temperature, rolling longitudinally to the finished pipe diameter, and then air cooling. and from 2.5 minutes to 6 minutes
Holding the air KTo for a few minutes lowers the temperature of the hollow body after stretching to a temperature below the Art point, at least 5 ooc, at least about 1.1 of the length of the stretched object. 2.5 times to 2.5 times
A process characterized by rolling in the longitudinal direction to double the length and then air cooling before cooling to a temperature about 100C below the Ar1 point using water or a mixture of water and air. 123 480 N/m" to 650 N/wa" 1
2. A method according to claim 1 for producing a seamless steel pipe having a tensile force resistance and a notch toughness of at least 430 J as measured at room temperature using ISOV-shaped notch specimens, comprising: The steel material used is carbon 0.25 - 0.45.1 manganese 0.7 - 1.7 - ton
0.3 - 0.5 Thichrome 0.1 -0
．． 3% Panajiu A O,0? -0.14% nitrogen
(0 - 0.014% normal impurity residue) Patent characterized in that it consists of iron (3) Producing a seamless steel pipe having a yield strength equal to or slightly exceeding the lower limit value A method according to claim 2, in which the steel material used contains carbon, manganese and/or chromium in an amount equal to or slightly greater than the lower value. A method characterized by: (4) Claim 2 which manufactures a seamless steel pipe having a yield strength equal to or close to the ultimate value of #1 above.
2. The method described in Section 1, in which the steel material used is a manganese and/or
Or a method that indicates that it contains chromium. (The method according to claim 2 for manufacturing a seamless steel pipe having a yield strength of 5352 ON/■3, wherein the steel material used contains 0.38 to 0.4.2% carbon.
Manganese 1.45 - 1.65% Silicon Q, 3 - 0.5 fbri
Mu 0.015 - 0.20
% Vanadium A 0.08 - 0.1%
Aluminum 0.02-0.04% Nitrogen
Sulfur at 0.012%t
A method characterized in that it contains 0.02% phosphorus and 0.025% phosphorus.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE31273734 | 1981-07-09 | ||
| DE3127373A DE3127373C2 (en) | 1981-07-09 | 1981-07-09 | Process for the manufacture of seamless steel tubes for the petroleum industry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS589921A true JPS589921A (en) | 1983-01-20 |
Family
ID=6136650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57114761A Pending JPS589921A (en) | 1981-07-09 | 1982-07-01 | Manufacture of seamless steel pipe for petroleum industry |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS589921A (en) |
| AR (1) | AR230652A1 (en) |
| AT (1) | AT389320B (en) |
| DE (1) | DE3127373C2 (en) |
| FR (1) | FR2509325B1 (en) |
| GB (1) | GB2101014B (en) |
| IT (1) | IT1151206B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE452028B (en) * | 1982-04-30 | 1987-11-09 | Skf Steel Eng Ab | APPLICATION OF RODS MADE OF CARBON STALL OR STORED STRAIGHT IN ACID, SULFUR WEATHER ENVIRONMENT |
| DE3311629C2 (en) * | 1983-03-28 | 1986-08-14 | Mannesmann AG, 4000 Düsseldorf | Process for the production of seamless steel tubes |
| DE3415590A1 (en) * | 1984-04-24 | 1985-10-31 | Mannesmann AG, 4000 Düsseldorf | USE OF A STEEL IN HYDROGEN-LIQUID |
| US6299705B1 (en) | 1998-09-25 | 2001-10-09 | Mitsubishi Heavy Industries, Ltd. | High-strength heat-resistant steel and process for producing high-strength heat-resistant steel |
| MX2008012240A (en) | 2006-03-28 | 2008-10-07 | Sumitomo Metal Ind | Process for production of seamless pipes. |
| CN101829679B (en) * | 2009-03-09 | 2013-09-04 | 鞍钢股份有限公司 | Production method for improving impact toughness of hot-rolled oil well pipe coupling material |
| EP2340897A1 (en) * | 2009-12-23 | 2011-07-06 | Voestalpine Grobblech GmbH | Thermomechanical processing method for rough sheet metal |
| CN102400057B (en) * | 2011-11-28 | 2014-12-03 | 宝山钢铁股份有限公司 | Low-alloy steel used for oil well pipe with carbon dioxide corrosion resistance and manufacturing method thereof |
| DE102013108803A1 (en) | 2013-08-14 | 2015-02-19 | Vallourec Deutschland Gmbh | Process for producing a tempered seamless hot-worked steel tube |
| CN108273850A (en) * | 2018-01-05 | 2018-07-13 | 衡阳华菱连轧管有限公司 | The test instrument on line method of middle carbon microalloy steel pipe |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE349059B (en) * | 1968-11-22 | 1972-09-18 | Nippon Kokan Kk | |
| JPS52152814A (en) * | 1976-06-14 | 1977-12-19 | Nippon Steel Corp | Thermo-mechanical treatment of seamless steel pipe |
-
1981
- 1981-07-09 DE DE3127373A patent/DE3127373C2/en not_active Expired
-
1982
- 1982-04-29 AT AT0166682A patent/AT389320B/en not_active IP Right Cessation
- 1982-05-21 IT IT21425/82A patent/IT1151206B/en active
- 1982-06-18 FR FR8210663A patent/FR2509325B1/en not_active Expired
- 1982-07-01 AR AR289865A patent/AR230652A1/en active
- 1982-07-01 JP JP57114761A patent/JPS589921A/en active Pending
- 1982-07-08 GB GB08219839A patent/GB2101014B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2509325B1 (en) | 1988-05-27 |
| GB2101014B (en) | 1985-04-03 |
| DE3127373A1 (en) | 1983-01-27 |
| ATA166682A (en) | 1989-04-15 |
| AR230652A1 (en) | 1984-05-31 |
| AT389320B (en) | 1989-11-27 |
| GB2101014A (en) | 1983-01-12 |
| DE3127373C2 (en) | 1985-08-29 |
| IT8221425A0 (en) | 1982-05-21 |
| IT1151206B (en) | 1986-12-17 |
| FR2509325A1 (en) | 1983-01-14 |
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