JPS63282241A - Tool material for borine on high cr seamless steel pipe - Google Patents
Tool material for borine on high cr seamless steel pipeInfo
- Publication number
- JPS63282241A JPS63282241A JP11359687A JP11359687A JPS63282241A JP S63282241 A JPS63282241 A JP S63282241A JP 11359687 A JP11359687 A JP 11359687A JP 11359687 A JP11359687 A JP 11359687A JP S63282241 A JPS63282241 A JP S63282241A
- Authority
- JP
- Japan
- Prior art keywords
- plug
- tool material
- life
- drilling
- scale
- 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
- 239000000463 material Substances 0.000 title claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 title claims description 20
- 239000010959 steel Substances 0.000 title claims description 20
- 229910000085 borane Inorganic materials 0.000 title 1
- UORVGPXVDQYIDP-UHFFFAOYSA-N trihydridoboron Substances B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 title 1
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 12
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 11
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 10
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 10
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 9
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000005553 drilling Methods 0.000 claims description 23
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 10
- 230000001590 oxidative effect Effects 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 230000007423 decrease Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 229910001039 duplex stainless steel Inorganic materials 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000011796 hollow space material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、継目無鋼管製造用工具材料に係り、特に高Ｃ
ｒ鋼穿孔時に耐焼付性および耐摩耗性に優れた性質を示
すピアサ−またはエロンゲータ用プラグの材料に関する
。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to tool materials for seamless steel pipe manufacturing, and in particular,
The present invention relates to a material for a plug for a piercer or elongator that exhibits excellent seizure resistance and wear resistance when drilling steel.
〈従来の技術〉
継目無鋼管の製造方法は、丸鋼片もしくは角鋼片をマン
ネスマン方式あるいはプレス方式により穿孔して中空素
材とし、この中空素材をマンドレルミルあるいはエロン
ゲータとプラグミル等により伸延加工する方法が一最的
である。<Prior art> A method for producing seamless steel pipes is to create a hollow material by drilling round or square steel pieces using the Mannesmann method or press method, and then elongate this hollow material using a mandrel mill, an elongator and a plug mill, etc. It is the best.
この継目無鋼管製造の各工程において、成形用プラグお
よびガイドシューは、高温下の苛酷な摩耗状態にさらさ
れる。したがって、高温における耐摩耗性にすぐれた工
具を製造し、工具寿命を延長させることは、上記方法に
よる継目無鋼管製造上の重要な問題の一つであり、特に
最近のように油井用継目無鋼管の高合金化が望まれる場
合、その重要性はさらに大きくなっている。In each step of manufacturing this seamless steel pipe, the forming plug and guide shoe are exposed to severe abrasion conditions at high temperatures. Therefore, producing tools with excellent wear resistance at high temperatures and extending the tool life is one of the important issues in the production of seamless steel pipes using the above method. Its importance becomes even greater when high-alloy steel pipes are desired.
穿孔およびエロンゲータ用プラグの材料に関する従来技
術としては、例えば特開昭６０〜１５９１５６や、特開
昭６０−２０８４５８に示されるように、重量比でＣ：
０．１〜０．２５％、Ｃｒ：１〜３％、Ｎｉ：１〜９
％。Conventional techniques regarding materials for perforation and elongator plugs include C:
0.1-0.25%, Cr: 1-3%, Ni: 1-9
%.
ＭｏおよびＷのいずれか１種また２種合計で０．３〜３
％を必須成分として、Ｎｉ／Ｃｒの値が１〜３である芯
金用合金材料が提本されている。また本出願人の出願に
よる特開昭５９−９１５４は通常の穿孔用プラグに含有
されている化学組成Ｃ−３ｉ Ｍｎ−Ｎｉ−Ｃｒに加
えて適当量のＭｏ、ＮｂまたはＭｏ。Any one of Mo and W or the total of the two is 0.3 to 3
% is an essential component, and an alloy material for a core metal having a Ni/Cr value of 1 to 3 has been proposed. Further, Japanese Patent Application Laid-Open No. 59-9154 filed by the present applicant contains a suitable amount of Mo, Nb or Mo in addition to the chemical composition C-3i Mn-Ni-Cr contained in a conventional drilling plug.
Ｎｂに加えて適当量のＭｏ、 Ｎｂ、さらにＡｌ。In addition to Nb, appropriate amounts of Mo, Nb, and even Al.
Ｚｒ、Ｖ、Ｃｏ、Ｗの１種または２種以上を添加するも
のであり、１３Ｃｒステンレス鋼の穿孔の場合にはかな
りの寿命の延長が認められる。One or more of Zr, V, Co, and W are added, and in the case of drilling 13Cr stainless steel, the life is significantly extended.
しかしながら最近マンネスマンマンドレルミルまたはプ
ラグミルにおいて従来製造が困難とされてきたＳ Ｕ
５３０４．３１６Ｌ 、 ３２１．３４７のオーステナ
イトステンレス鋼または２２〜２５％のＣｒを含有する
オーステナイト−フェライトの二相ステンレス鋼等の１
６％以上のＣｒを含有する鋼材料が多量に造管されるよ
うになっできた。このため上記３件の発明に開示されて
いるような合金鋼プラグを用いても、えぐれなどの損耗
や被圧延材のプラグへの焼付が発生し、プラグ寿命が短
いことによる原単位の上昇のみな°らず、パイプの内面
欠陥多発の原因にもなっていた。However, recently S U, which has traditionally been difficult to manufacture using Mannesmann mandrel mills or plug mills,
1 such as 5304.316L, 321.347 austenitic stainless steel or austenitic-ferritic duplex stainless steel containing 22-25% Cr.
Steel materials containing 6% or more of Cr have come to be manufactured in large quantities. For this reason, even if alloy steel plugs such as those disclosed in the three inventions above are used, wear such as gouges and seizure of the rolled material to the plug will occur, resulting in an increase in the unit consumption due to the short life of the plug. Not only that, but it was also the cause of frequent internal defects in the pipe.
〈発明が解決しようとする問題点〉
本発明は上記に鑑みなされたもので５ＵＳ３０４゜３１
６Ｌ 、 ３２１．３４７．２２Ｃｒおよび２５ Ｃｒ
二相ステンレス鋼の穿孔または伸延加工に際して損耗が
小さく、被圧延材の焼付がない寿命の長いプラグを提供
することを目的とする。<Problems to be solved by the invention> The present invention has been made in view of the above, and is
6L, 321.347.22Cr and 25Cr
The purpose of the present invention is to provide a long-life plug that causes little wear and tear during drilling or elongation of duplex stainless steel and does not seize the rolled material.
く問題点を解決するための手段〉
本発明は重量比にて、
Ｃ： ０．１０〜０．４０％ 、 Ｓ ｉ ： ０
．１０〜１．００％Ｍｎ ： ０．２’Ｏ〜２．００％
、Ｃｒ：０．９５％以下Ｍｏ ： ０．５０〜３．５
０％ 、 Ｗ ：０．５０〜３．５０％Ｎｂ ：
０．１０〜１．００％
を含有し、残部はＦｅと不可避的不純物からなる鋳造合
金より成形され、その表面に酸化スケール付着処理を施
された高Ｃｒ継目無鋼管穿孔用工具材料であり、また重
量比にて、
Ｃ： ０．１０〜０．４０％ 、 Ｓ ｉ ： ０．１
０〜１．００％Ｍｎ ： ０．２０’２．００％ 、Ｃ
ｒ：０．９５％以下Ｍｏ ： ０．５０〜３．５０％
、 Ｗ ：０．５０ 〜３．５０％Ｎｂ ： ０．１
０〜１．００％
を含有し、さらに
Ｎ ｉ ： ０．５０〜３．５０％ 、 Ｃｏ ：
０．５０〜３．５０％ｖ １．１０〜１．００％
のうちから選ばれた１種または２種以上を含有し、残部
はＦｅと不可避的不純物からなる鋳造合金より成形され
、その表面に酸化スケール付着処理を施された高Ｃｒ継
目無鋼管穿孔用工具材料である。Means for Solving the Problems> The present invention has the following weight ratio: C: 0.10 to 0.40%, Si: 0
．． 10~1.00%Mn: 0.2'O~2.00%
, Cr: 0.95% or less Mo: 0.50 to 3.5
0%, W: 0.50-3.50% Nb:
This is a tool material for drilling seamless high Cr steel pipes, which is formed from a cast alloy containing 0.10 to 1.00%, with the remainder consisting of Fe and unavoidable impurities, and the surface of which has been subjected to oxide scale adhesion treatment. In addition, in terms of weight ratio, C: 0.10 to 0.40%, Si: 0.1
0-1.00%Mn: 0.20'2.00%, C
r: 0.95% or less Mo: 0.50 to 3.50%
, W: 0.50 to 3.50%Nb: 0.1
Contains 0 to 1.00%, furthermore Ni: 0.50 to 3.50%, Co:
Contains one or more selected from 0.50 to 3.50% v 1.10 to 1.00%, and the remainder is formed from a cast alloy consisting of Fe and inevitable impurities, and its surface This is a tool material for drilling high Cr seamless steel pipes that has been subjected to oxide scale adhesion treatment.
く作 用〉
本発明者らは１６％以上のＣｒを含有する材料を穿孔ま
たは伸延加工するためのプラグ寿命を向上させるべく実
験、検討を重ねてきた。上記３件の発明に開示されてい
るように従来の穿孔用プラグにはすべて１％以上のＣｒ
が含有されており、Ｃｒの炭化物による高温強度の上昇
およびＣｒの酸化物、形成による地鉄との密着性にすぐ
れた酸化スケール生成などで寿命を向上させることが試
みられている。Effect> The present inventors have repeatedly conducted experiments and studies in order to improve the life of a plug for drilling or elongating a material containing 16% or more of Cr. As disclosed in the above three inventions, all conventional drilling plugs contain Cr of 1% or more.
Attempts have been made to improve the service life by increasing the high-temperature strength due to Cr carbides and by forming oxide scales with excellent adhesion to the base iron due to the formation of Cr oxides.
本発明者らは１％以上のＣｒを含有する従来プラグで１
６％以上のＣｒを含有する材料を穿孔または伸延する場
合、Ｃｒの酸化物を含む酸化スケールが穿孔中に高Ｃｒ
被穿孔材と密着する傾向にあり、プラグ側の酸化スケー
ルが被穿孔材によってこすり取られて、断熱効果、潤滑
効果が消失しプラグのえぐれまたは被穿孔材の焼付が生
じて寿命が著しく低下することを見出した。The present inventors found that a conventional plug containing 1% or more of Cr
When drilling or elongating materials containing 6% or more Cr, oxide scale containing oxides of Cr may cause high Cr content during drilling.
It tends to adhere to the material to be drilled, and the oxidized scale on the plug side is scraped off by the material to be drilled, causing the insulation and lubrication effects to disappear, causing the plug to gouge or the material to be drilled to seize, significantly shortening its life. I discovered that.
次に本発明の基礎となった実験を説明する。Next, the experiments that formed the basis of the present invention will be explained.
第１図は（Ａ） Ｃ：０．５０％ 、Ｓｉ：０．３５％
。Figure 1 shows (A) C: 0.50%, Si: 0.35%
.
Ｍｎ ： ０．５５％ 、Ｍｏ：１．４８％ 。Mn: 0.55%, Mo: 1.48%.
Ｗ ７２．９２％ 、 Ｎｂ：０．３１％ＣＢ）
Ｃ：０．２９％ 、Ｓｔ：０．３３％ 。W 72.92%, Nb: 0.31%CB)
C: 0.29%, St: 0.33%.
Ｍｎ：０．５４％ 、’ Ｍｏ ＝ １．０２％
。Mn: 0.54%, 'Mo = 1.02%
.
Ｗ ：２．０７％ 、Ｎｂ：０．２５％ 。W: 2.07%, Nb: 0.25%.
Ｎｉ：１．４２％ 、 Ｃｏ ： １．０１％を基
礎にＣｒ含有量を変えた組成を有する鋼材料から所定の
形状に鋳造された後酸化雰囲気中で９７０°ＣＸ４ｈの
酸化スケール付着処理を施されたプラグを用い、 ・
Ｃ： ０．０１５％、Ｓｔ：０．３５％、Ｍｎ：１．５
３％。After being cast into a predetermined shape from a steel material with a base composition of Ni: 1.42%, Co: 1.01% and varying the Cr content, it is subjected to oxide scale adhesion treatment at 970°C for 4 hours in an oxidizing atmosphere. Using a plug made of: ・C: 0.015%, St: 0.35%, Mn: 1.5
3%.
Ｎ ｉ ： ５．９２％、 Ｃｒ／２２．６％、
Ｍｏ ： ３．１２％。Ni: 5.92%, Cr/22.6%,
Mo: 3.12%.
Ｎ ：０．１６％を含む２相ステンレス鋼の外径２０
７ ｍのビレットを穿孔し、外径１９２ｍ、肉厚１３．
５１のホローを連続して製造した場合の寿命を、Ｃ：ｏ
、３１％、 Ｓ ｉ ： ０．３５％、Ｍｎ：０．５
５％。N: Outer diameter of duplex stainless steel containing 0.16% 20
A 7 m billet is drilled with an outer diameter of 192 m and a wall thickness of 13.
The lifespan when 51 hollows are manufactured continuously is C: o
, 31%, Si: 0.35%, Mn: 0.5
5%.
Ｎｉ ： １．０５％、Ｃｒ：３．０４％を含有する鋼
材料から成形し、上記雰囲気中で９５０”ＣＸ ４ ｈ
のスケール付着処理を施されたプラグを用いて上記ビレ
ットを上記ホローに連続穿孔した場合の寿命に対する比
で表し、それらをプラグのＣｒ含有量に対してプロット
したものである。It was molded from a steel material containing Ni: 1.05% and Cr: 3.04%, and was heated for 950"CX 4 h in the above atmosphere.
It is expressed as a ratio to the life when the above-mentioned billet is continuously drilled into the above-mentioned hollow using a plug subjected to scale adhesion treatment, and is plotted against the Cr content of the plug.
第１図からＣｒ含有量が０．９５％を越えると、プラグ
の寿命が急激に低下することが分かる。It can be seen from FIG. 1 that when the Cr content exceeds 0.95%, the life of the plug decreases rapidly.
この知見に基づき本発明者らは従来プラグに比べて’Ｃ
ｒ含有量を低減し、適切なプラグ表面の高温酸化スケー
ル付着処理によって地鉄との界面近傍のスケールを穿孔
中に１６％以上のＣｒを含有する被穿孔材にこすり取ら
れることなく、むしろプラグ表面に強固に溶着されるよ
うなＦｅＯ主体の組成とし、さらに適当量のＭｏ、Ｗ、
Ｎｂ、Ｎｉ。Based on this knowledge, the inventors found that 'C
By reducing the r content and applying a suitable high-temperature oxide scale adhesion treatment on the plug surface, the scale near the interface with the base iron is not scraped off by the drilled material containing 16% or more Cr during drilling, but rather the plug The composition consists mainly of FeO so that it is firmly welded to the surface, and also contains appropriate amounts of Mo, W,
Nb, Ni.
Ｃｏ、Ｖを添加して高温強度と表面酸化スケールの地鉄
への密着性を高めることにより、１６％以上のＣｒを含
有するステンレス鋼の穿孔および伸延加工用の高寿命プ
ラグ材料を得ることができた。By adding Co and V to improve high-temperature strength and adhesion of surface oxide scale to the base steel, it is possible to obtain a long-life plug material for drilling and drawing of stainless steel containing 16% or more Cr. did it.
次に本発明における化学成分の限定理由について述べる
。ここで成分組成は全て重量％である。Next, the reason for limiting the chemical components in the present invention will be described. All component compositions herein are in percent by weight.
Ｃ：
Ｃは高温強度を高めるために添加されるが０．１０％未
満ではその効果がなく ０．４０％を越えると使用中に
割れが発生し易くなり、プラグの寿命を著しく低下させ
る。C: C is added to increase high-temperature strength, but if it is less than 0.10%, it has no effect, and if it exceeds 0.40%, cracks are likely to occur during use, significantly shortening the life of the plug.
Ｓｉ：
Ｓｔは脱酸のために添加されるが０．１０％未満ではそ
の効果が小さく １．００％を越えると酸化スケール付
着量が少なくなり寿命を低下させる。Si: St is added for deoxidation, but if it is less than 0.10%, its effect will be small, and if it exceeds 1.00%, the amount of oxide scale attached will decrease and the life will be shortened.
Ｍｎ：
Ｍｎは高温強度を高めるために添加されるが０．２０％
未満ではその効果が小さく ２．００％を越えると穿孔
中の熱履歴により、熱疲労割れが発生し易くなり寿命を
低下させる。Mn: 0.20% Mn is added to increase high temperature strength
If it is less than 2.00%, the effect is small, and if it exceeds 2.00%, thermal fatigue cracking is likely to occur due to the thermal history during drilling, reducing the service life.
Ｃｒ：
Ｃｒは表面に地鉄合金との密着性がよく、かつ断熱性の
よいスケールを生成させ、またＣｒの炭化物生成による
高温強度の増加のために添加されるが、０．９５％を越
えると地鉄界面近傍のスケール組成がすべてＦ ｅ Ｃ
ｒ ｚ Ｏａ となり、１６％以上のＣｒを含有する材
料を穿孔する場合、プラグ側のスケールが被圧延材にこ
すり取られるため寿命が低下する。Cr: Cr is added to form a scale on the surface that has good adhesion to the base metal alloy and has good heat insulation properties, and to increase high temperature strength by forming carbides of Cr, but it is added in an amount exceeding 0.95%. The scale composition near the interface between F e C
r z Oa , and when drilling a material containing 16% or more of Cr, the scale on the plug side is scraped off by the rolled material, resulting in a shortened life.
ＭＯ：
Ｍｏは高温強度を高めるために添加されるが、０．５０
％未満ではその効果が小さく 、３．５％を越えると酸
化スケール生成量が低下し寿命が著しく低下する。MO: Mo is added to increase high temperature strength, but 0.50
If it is less than 3.5%, the effect will be small, and if it exceeds 3.5%, the amount of oxide scale generated will decrease and the life will be significantly shortened.
Ｗ ：
Ｗは高温強度を高めるために添加されるが、０．５０％
未満ではその効果が小さく 、３．５％を越えると酸化
スケール生成量が低下し寿命が著しく悪化する。W: W is added to increase high temperature strength, but 0.50%
If it is less than 3.5%, the effect will be small, and if it exceeds 3.5%, the amount of oxide scale produced will decrease and the life will be significantly shortened.
Ｎｂ：
Ｎｂは高温強度を高めるために添加されるが、０．０５
％未満ではその効果が小さく 、 １．０％を越えると
穿孔中に割れが発生し易くなり、寿命を低下させる。Nb: Nb is added to increase high temperature strength, but 0.05
If it is less than 1.0%, the effect is small, and if it exceeds 1.0%, cracks are likely to occur during drilling, reducing the lifespan.
上記のＣ，Ｓｉ、Ｍｎ、Ｃｒ、Ｍｏ、Ｗ、Ｎｂの各限定
量を本発明の穿孔または伸延加工用プラグ材の必須成分
とするが、さらにＮｉ、Ｃｏ、Ｖを下記限定量内におい
て１種または２種以上台゛有させることにより、本発明
の目的を達成することができる。Each of the above-mentioned limited amounts of C, Si, Mn, Cr, Mo, W, and Nb are essential components of the plug material for drilling or stretching of the present invention, and Ni, Co, and V are further added in the following limited amounts to 1 The object of the present invention can be achieved by having one or more species.
Ｎｉ ：
Ｎｉは酸化雰囲気中における加熱中に選択酸化を促進し
界面のスケールを根が生えたような形状にして、密着性
を高めプラグ寿命を向上させるが０．５０％未満では、
その効果が小さく 、３．０％を越えるとスケール生成
量が低下し、寿命が著しく悪化する。Ni: Ni promotes selective oxidation during heating in an oxidizing atmosphere and makes the scale at the interface look like roots, increasing adhesion and extending plug life, but if it is less than 0.50%,
The effect is small, and if it exceeds 3.0%, the amount of scale produced decreases and the life span is significantly deteriorated.
ＣＯ：
Ｃｏは高温強度を高めるとともに、酸化雰囲気中におけ
る加熱中に選択酸化を促進し、また地鉄界面近傍のス与
−ル中に金属粒を多数生成させてスケールと地鉄の密着
性を著しく高めて、プラグ寿命を延長させるが、０．５
０％未満ではその効果が小さく、３．５％を越えるとス
ケール生成量が低下し寿命が悪化する。CO: Co increases high-temperature strength, promotes selective oxidation during heating in an oxidizing atmosphere, and generates many metal particles in the spools near the interface of the steel base, improving the adhesion between the scale and the steel base. Although it significantly increases the plug life and extends the life of the plug, it is 0.5
If it is less than 0%, the effect will be small, and if it exceeds 3.5%, the amount of scale generated will decrease and the life will deteriorate.
■ ：
■は高温強度を高めるために添加されるが、０．０５％
未満ではその効果が小さく 、ｉ、ｏ％を越えると穿孔
中にプラグ割れが発生し易くなり、寿命を著しく低下さ
せる。■: ■ is added to increase high temperature strength, but 0.05%
If it is less than i, o%, the effect will be small, and if it exceeds i,o%, plug cracking will easily occur during drilling, and the life will be significantly shortened.
また酸化雰囲気中におけるスケール付着処理時の温度を
９００〜１０５０°Ｃの範囲としたのは９００°Ｃ以下
のときにはスケールの生成量が少なく、また１０５０゛
Ｃを越えるときにはスケール中に空隙が多くなり密着性
が低下して、いずれの場合もプラグの寿命の低下が著し
い。In addition, the temperature during the scale deposition treatment in an oxidizing atmosphere was set in the range of 900 to 1050°C.When the temperature is below 900°C, the amount of scale generated is small, and when it exceeds 1050°C, there are many voids in the scale. In either case, the life of the plug is significantly shortened due to decreased adhesion.
上記温度範囲における保持時間が１時間未満のときには
スケール生成量が少なくプラグの寿命が低下するが２４
時間・で生成量は飽和し、これ以上保持するのは生産性
を低下させ、加熱原単位を上昇させるだけであるので無
意味である。If the holding time in the above temperature range is less than 1 hour, the amount of scale generated will be small and the life of the plug will be shortened.
The production amount reaches saturation within 3 hours, and it is meaningless to hold it any longer because it will only reduce productivity and increase the heating unit consumption.
〈実施例〉
第１表に化学組成を示した本発明材と比較材を第２表に
示す条件で酸化雰囲気中における酸化スケール付着のた
めの熱処理を施し、これらのプラグを用いて化学組成が
Ｃ： ０．０１５％ 、Ｓｉ：０．３５％ 、 Ｍｎ
： １．５３％ 、Ｎｉ：５．９２％ 、 Ｃｒ：
２２．６％ 、Ｍｏ：３．１２％ 、 Ｎ ：０．１
６％を含む２相ステンレス鋼の外径２０７国のビレット
を穿孔し、外径１９２鵬、肉厚１３．５ｍａ＋のホロー
を連続して第 １ 表
第 ２ 表
製造した場合について、比較材の寿命を１とし、本発明
材のそれらをその倍数で表し、熱処理条件と同じく第２
表に示す。<Example> The inventive materials and comparative materials whose chemical compositions are shown in Table 1 were heat-treated in an oxidizing atmosphere to remove oxide scale under the conditions shown in Table 2, and the chemical compositions were determined using these plugs. C: 0.015%, Si: 0.35%, Mn
: 1.53%, Ni: 5.92%, Cr:
22.6%, Mo: 3.12%, N: 0.1
Table 1, Table 2 shows the lifespan of comparative materials when a billet of duplex stainless steel with an outer diameter of 207mm containing 6% is continuously manufactured into a hollow with an outer diameter of 192mm and a wall thickness of 13.5mm+. is 1, and those of the present invention material are expressed as multiples thereof, and the second
Shown in the table.
第２表のプラグ寿命比からあきらかなように、本発明材
はいずれもすぐれた寿命を有している。As is clear from the plug life ratios in Table 2, all the materials of the present invention have excellent lifespans.
〈発明の効果〉
本発明は、上記実施例からも明らかな如く、継目無鋼管
製造用工具材料の化学成分を限定するとともに、酸化雰
囲気中において９００〜１０５０℃の温度範囲で１〜２
４時間保持する酸化スケール付着処理を施すことによっ
て１６％以上のＣｒを含有するステンレス鋼を穿孔また
は伸延加工するに際して耐摩耗にすぐれ、被圧延材の焼
きの住じない寿命の長い工具材料を製造することを可能
にしたものである。<Effects of the Invention> As is clear from the above examples, the present invention limits the chemical composition of the tool material for seamless steel pipe production, and at the same time, it
By applying an oxide scale adhesion treatment that is maintained for 4 hours, we produce a tool material with excellent wear resistance and a long life that prevents the rolled material from burning when drilling or stretching stainless steel containing 16% or more Cr. It made it possible to do so.
これにより１６％以上のＣｒを含有する高合金継目無鋼
管をマンネスマンミルで製造する際の最大の問題である
穿孔または伸延加工用プラグの損耗を改善することがで
きるので、近年の油井、ガス井用継目無綱管の分野にお
ける高合金鋼管の需要の増大からみて、その工業的価値
は大きい。As a result, it is possible to improve the wear and tear of the plugs for drilling or drawing, which is the biggest problem when manufacturing high-alloy seamless steel pipes containing 16% or more of Cr using Mannesmann mills. In view of the increasing demand for high-alloy steel pipes in the field of seamless steel pipes, their industrial value is significant.
第１図は、ＣＳｔ Ｍｎ Ｍｏ−Ｗ−ＮｂまたはＣ
−３ｉ−Ｍｎ−Ｍｏ−Ｗ−Ｎｂ−Ｃ−３ｉ−を本発明の
限定範囲で含有する穿孔用プラグの寿命におよぼすＣｒ
含有量の影響を示す図である。Figure 1 shows CSt Mn Mo-W-Nb or CSt
-3i-Mn-Mo-W-Nb-C-3i- over the life of a drilling plug containing 3i- within the limited range of the present invention
It is a figure showing the influence of content.
Claims (2)
％Ｍｎ：０．２０〜２．００％、Ｃｒ：０．９５％以下
Ｍｏ：０．５０〜３．５０％、Ｗ：０．５０〜３．５０
％Ｎｂ：０．１０〜１．００％ を含有し、残部はＦｅと不可避的不純物からなる鋳造合
金より成形され、その表面に酸化スケール付着処理を施
された高Ｃｒ継目無鋼管穿孔用工具材料。(1) Weight ratio: C: 0.10-0.40%, Si: 0.10-1.00
%Mn: 0.20-2.00%, Cr: 0.95% or less Mo: 0.50-3.50%, W: 0.50-3.50
%Nb: 0.10 to 1.00%, with the remainder being Fe and unavoidable impurities. A tool material for drilling seamless high Cr steel pipes, which is formed from a cast alloy and has its surface treated with oxide scale adhesion. .
％Ｍｎ：０．２０〜２．００％、Ｃｒ：０．９５％以下
Ｍｏ：０．５０〜３．５０％、Ｗ：０．５０〜３．５０
％Ｎｂ：０．１０〜１．００％ を含有し、さらに Ｎｉ：０．５０〜３．５０％、Ｃｏ：０．５０〜３．５
０％Ｖ：０．１０〜１．００％ のうちから選ばれた１種または２種以上を含有し、残部
はＦｅと不可避的不純物からなる鋳造合金より成形され
、その表面に酸化スケール付着処理を施された高Ｃｒ継
目無鋼管穿孔用工具材料。(2) Weight ratio: C: 0.10-0.40%, Si: 0.10-1.00
%Mn: 0.20-2.00%, Cr: 0.95% or less Mo: 0.50-3.50%, W: 0.50-3.50
%Nb: 0.10-1.00%, further Ni: 0.50-3.50%, Co: 0.50-3.5
0% V: Contains one or more selected from 0.10 to 1.00%, and the rest is formed from a cast alloy consisting of Fe and inevitable impurities, and its surface is treated with oxide scale adhesion. High Cr seamless steel pipe drilling tool material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11359687A JPS63282241A (en) | 1987-05-12 | 1987-05-12 | Tool material for borine on high cr seamless steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11359687A JPS63282241A (en) | 1987-05-12 | 1987-05-12 | Tool material for borine on high cr seamless steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63282241A true JPS63282241A (en) | 1988-11-18 |
| JPH048498B2 JPH048498B2 (en) | 1992-02-17 |
Family
ID=14616216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11359687A Granted JPS63282241A (en) | 1987-05-12 | 1987-05-12 | Tool material for borine on high cr seamless steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63282241A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04147706A (en) * | 1990-10-12 | 1992-05-21 | Kawasaki Steel Corp | Plug for producing seamless steel pipe |
| EP2052095A1 (en) | 2006-08-09 | 2009-04-29 | Rovalma, S.A. | Process for setting the thermal conductivity of a steel, tool steel, in particular hot-work steel, and steel object |
| EP2476772A1 (en) | 2011-01-13 | 2012-07-18 | Rovalma, S.A. | High thermal diffusivity and high wear resistance tool steel |
| CN102586700A (en) * | 2012-03-05 | 2012-07-18 | 宜兴市景程模具有限公司 | High alloy tube piercing plug material and manufacturing method and surface processing method thereof |
| US8544306B2 (en) | 2009-03-03 | 2013-10-01 | Nippon Steel & Sumitomo Metal Corporation | Plug, piercing-rolling mill, and method of producing seamless tube by using the same |
| CN103627956A (en) * | 2013-11-27 | 2014-03-12 | 江苏科技大学 | Wear-resistant intake valve and preparation method thereof |
| JP2015134968A (en) * | 2009-04-01 | 2015-07-27 | ロバルマ, ソシエダッド アノニマRovalma, S.A. | Hot tool steel having excellent toughness and thermal conductivity |
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| CN104245167B (en) | 2012-04-11 | 2016-03-30 | 新日铁住金株式会社 | For the renovation process of the top of punch |
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1987
- 1987-05-12 JP JP11359687A patent/JPS63282241A/en active Granted
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04147706A (en) * | 1990-10-12 | 1992-05-21 | Kawasaki Steel Corp | Plug for producing seamless steel pipe |
| EP2052095A1 (en) | 2006-08-09 | 2009-04-29 | Rovalma, S.A. | Process for setting the thermal conductivity of a steel, tool steel, in particular hot-work steel, and steel object |
| US9689061B2 (en) | 2006-08-09 | 2017-06-27 | Rovalma, S.A. | Tool steel alloy with high thermal conductivity |
| US8544306B2 (en) | 2009-03-03 | 2013-10-01 | Nippon Steel & Sumitomo Metal Corporation | Plug, piercing-rolling mill, and method of producing seamless tube by using the same |
| JP2015134968A (en) * | 2009-04-01 | 2015-07-27 | ロバルマ, ソシエダッド アノニマRovalma, S.A. | Hot tool steel having excellent toughness and thermal conductivity |
| EP2476772A1 (en) | 2011-01-13 | 2012-07-18 | Rovalma, S.A. | High thermal diffusivity and high wear resistance tool steel |
| EP2663664A1 (en) * | 2011-01-13 | 2013-11-20 | Rovalma, S.A. | High thermal diffusivity and high wear resistance tool steel |
| EP3330401A1 (en) * | 2011-01-13 | 2018-06-06 | Rovalma, S.A. | High thermal diffusivity and high wear resistance tool steel |
| CN102586700A (en) * | 2012-03-05 | 2012-07-18 | 宜兴市景程模具有限公司 | High alloy tube piercing plug material and manufacturing method and surface processing method thereof |
| CN103627956A (en) * | 2013-11-27 | 2014-03-12 | 江苏科技大学 | Wear-resistant intake valve and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH048498B2 (en) | 1992-02-17 |
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