JPS6320434A - Heat resistant alloy for piercing plug - Google Patents
Heat resistant alloy for piercing plugInfo
- Publication number
- JPS6320434A JPS6320434A JP16427786A JP16427786A JPS6320434A JP S6320434 A JPS6320434 A JP S6320434A JP 16427786 A JP16427786 A JP 16427786A JP 16427786 A JP16427786 A JP 16427786A JP S6320434 A JPS6320434 A JP S6320434A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- weight
- alloy
- plug
- based alloy
- 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
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 47
- 239000000956 alloy Substances 0.000 title claims abstract description 47
- 239000000843 powder Substances 0.000 claims abstract description 94
- 238000005245 sintering Methods 0.000 claims abstract description 11
- 239000011812 mixed powder Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims 2
- 239000000203 mixture Substances 0.000 abstract description 7
- 238000005096 rolling process Methods 0.000 abstract description 5
- 229910000640 Fe alloy Inorganic materials 0.000 abstract 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract 4
- 229910000531 Co alloy Inorganic materials 0.000 abstract 3
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 19
- 230000035939 shock Effects 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 229910000628 Ferrovanadium Inorganic materials 0.000 description 4
- 229910001347 Stellite Inorganic materials 0.000 description 4
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 description 4
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical group [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229910001315 Tool steel Inorganic materials 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000000573 anti-seizure effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、シームレス鋼管等の穿孔プラグ用耐熱合金に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a heat-resistant alloy for use in perforated plugs such as seamless steel pipes.
赤熱ソリッドバーを素材としてシームレス鋼管を製造す
る穿孔圧延工程においては、種々の穿孔プラグが使用さ
れる。それらのプラグ材料として各種の工具鋼がプラグ
の使用条件に応じて使い分けられている０例えば、１１
００〜１３００℃の温度域で用いられるピアサ−プラグ
としては、０．３ Ｃ−３Ｃｒ−ＩＮｉ−Ｆｅ鋼、９０
０−１０００℃の温度域で用いられるプラグミルプラグ
には、１．５Ｃ−１７Ｃｒ−Ｆｅ鋼、また７００〜９０
０℃で使用されるリーラプラグとしては、ＦＣ３０相当
材がそれぞれ用いられている。Various types of perforation plugs are used in the perforation rolling process for manufacturing seamless steel pipes from red-hot solid bars. Various tool steels are used as plug materials depending on the usage conditions of the plug.For example, 11
As a piercer plug used in the temperature range of 00 to 1300°C, 0.3C-3Cr-INi-Fe steel, 90
Plug mill plugs used in the temperature range of 0-1000°C include 1.5C-17Cr-Fe steel and 700-90
A material equivalent to FC30 is used as the reeler plug used at 0°C.
穿孔プラグは、高温・高圧力の苛酷な条件下に使用され
るものであるから、耐摩耗性、耐焼付性および耐変形性
の各特性を兼備するものであることが必要であり、また
その使用の前後に急熱・急冷を受けるので、耐熱衝撃性
をも備えたものでなければならない。しかし、従来の穿
孔プラグの上記特性は十分でなく、その耐用寿命は極め
て短い。Perforated plugs are used under harsh conditions of high temperature and high pressure, so they must have the characteristics of wear resistance, seizure resistance, and deformation resistance. Since it is subjected to rapid heating and cooling before and after use, it must also have thermal shock resistance. However, the above characteristics of conventional perforated plugs are not sufficient, and their service life is extremely short.
例えば、ピアサ−プラグで高合金鋼材（例えば、１３Ｃ
ｒｍ）をピアシングする場合のピアシング可能な本数は
、わずかに数本程度に過ぎず、プラグの頻繁な取替えを
余儀な（されている。For example, the piercer plug may be made of high alloy steel (e.g. 13C).
rm), the number of plugs that can be pierced is only a few, which necessitates frequent replacement of plugs.
穿孔圧延操業の安定化と造管品質の向上の点から、穿孔
プラグの材質を改善し耐用寿命を向上させることが要請
されている。In order to stabilize the piercing rolling operation and improve the quality of pipe manufacturing, there is a need to improve the material of the piercing plug and extend its service life.
本発明は、この要請に応えるための穿孔プラグ用耐熱合
金を提供するものである。The present invention provides a heat-resistant alloy for a perforated plug to meet this demand.
〔問題点を解決するための手段および作用〕本発明の穿
孔プラグ用耐熱合金は、
Ｃｏ基合金粉末：１０〜２０重量％、Ｆｅ基合金粉末：
６０〜７５重量％、■Ｃ粉末１０重量％以下、およびＷ
Ｃ粉末：５重量％以下および／またはＺｒ０ｔ粉末：１
５重量％以下からなり、前記Ｃｏ基合金粉末とＦｅ基合
金粉末の合計量＝８０〜９０重量％、ＷＣ粉末とＺｒＯ
２粉末との合計量＝１５重世％以下である混合粉末を焼
結したものである。[Means and effects for solving the problems] The heat-resistant alloy for perforated plugs of the present invention contains: Co-based alloy powder: 10 to 20% by weight, Fe-based alloy powder:
60 to 75% by weight, ■ C powder 10% by weight or less, and W
C powder: 5% by weight or less and/or Zr0t powder: 1
5% by weight or less, total amount of the Co-based alloy powder and Fe-based alloy powder = 80 to 90% by weight, WC powder and ZrO
This is a product obtained by sintering a mixed powder in which the total amount of the two powders is 15% or less.
また、上記混合粉末には、所望により、１５重量％以下
のＣｏ粉末が配合される。その場合は、Ｆｅ基合金粉末
は５０〜７５重量％とじ、Ｆｅ基合金粉末とＣｏ基合金
粉末とＣｏ粉末との合計量を８０〜９０重量％とする。In addition, 15% by weight or less of Co powder may be added to the mixed powder, if desired. In that case, the Fe-based alloy powder is 50 to 75% by weight, and the total amount of the Fe-based alloy powder, Co-based alloy powder, and Co powder is 80 to 90% by weight.
なお、混合粉末中のＶ粉末は、その一部ないしは全量を
Ｆｅ−Ｖ（フェロバナジウム）粉末に置き代えることが
でき、従って、以下の説明では、■粉末は特記なき限り
、■粉末および／またはＦｅ−Ｖ粉末を意味するものと
する。Ｆｅ−Ｖ粉末を使用する場合の配合量は、■元素
量に換算して１０重量％以下に調整される。It should be noted that part or all of the V powder in the mixed powder can be replaced with Fe-V (ferrovanadium) powder. Therefore, in the following explanation, unless otherwise specified, ■powder will be replaced with ■powder and/or shall mean Fe-V powder. When Fe-V powder is used, the blending amount is adjusted to 10% by weight or less in terms of elemental content.
Ｃｏ基合金粉末としては、Ｃｒ：２０〜４０％、Ｗ：１
〜２０％、Ｃ：０．５〜５％、Ｆｅ：０〜５％、および
その他のｉｎ元素（Ｓｔ等）を含むＣｏ基合金（Ｃｏ：
３０〜７８％）が好ましく用いられる。As the Co-based alloy powder, Cr: 20 to 40%, W: 1
~20%, C: 0.5~5%, Fe: 0~5%, and other in elements (St, etc.)
30 to 78%) is preferably used.
代表的には「ステライト」と称される各種タイプのＣｏ
基合金の粉末であり、ステライト＃６（Ｃｒ：２６〜３
０％、Ｗ；３〜５％、Ｃｏ、 ５〜１．３％：Ｆｅ≦３
％、Ｃｏ ： Ｂ ａ ｌ ） 、ステライト＃１
（Ｃｒ ： ２８〜３２％、Ｗ：１１〜１３％、Ｃ：２
〜３％、Ｆｅ≦３％、Ｃｏ：Ｂａ１）等が挙げられる。Various types of Co, typically called "stellite"
It is a base alloy powder, Stellite #6 (Cr: 26-3
0%, W; 3-5%, Co, 5-1.3%: Fe≦3
%, Co: B a l ), Stellite #1
(Cr: 28-32%, W: 11-13%, C: 2
~3%, Fe≦3%, Co:Ba1), and the like.
Ｆｅ基合金粉末としては、Ｃｒ：１０〜３０％、Ｎｉ：
５〜３０％、ＭＯ：０〜５％等の元素を含むＦｅ基合金
（Ｆｅ：３５〜８５％）、代表的には各種ステンレス鋼
、例えばＳ Ｕ ５３０４（Ｃｒ ： １８〜２０％、
Ｎｉ：８〜１０％、Ｆｅ ： Ｂａ ｊ２） 、５ＵＳ
３１０ Ｓ（Ｃｒ ： ２４〜２６％、Ｎ ｉ ： １
９〜２２％、Ｆｅ：Ｂａ１ ） 、Ｓ Ｕ ５３１６（
Ｃｒ ： １６〜１８％、Ｎｉ：１０〜１４％、ＭＯ：
２〜３％、Ｆｅ：Ｂａ６）等が好ましく用いられる。As the Fe-based alloy powder, Cr: 10 to 30%, Ni:
Fe-based alloy (Fe: 35-85%) containing elements such as MO: 0-5%, typically various stainless steels such as SU 5304 (Cr: 18-20%,
Ni: 8-10%, Fe: Baj2), 5US
310S (Cr: 24-26%, Ni: 1
9-22%, Fe:Ba1), S U 5316 (
Cr: 16-18%, Ni: 10-14%, MO:
2 to 3%, Fe:Ba6), etc. are preferably used.
本発明の耐熱合金（焼結体）は、Ｃｏ基合金粉末とＦｅ
基合金粉末とから形成された基地に、ＷＣ粒子および／
またはＺｒＯ，粒子が分散相として均一に分布している
Ｍｉ織を有し、その基地による耐熱性、耐熱衝撃性、お
よび基地中のＷＣ粒子、ＺｒＯ，粒子の分布による耐摩
耗性、変形抵抗性、また■の存在による耐焼付性等を兼
備している。The heat-resistant alloy (sintered body) of the present invention comprises Co-based alloy powder and Fe
WC particles and/or a base formed from a base alloy powder.
Or it has a Mi weave in which ZrO particles are uniformly distributed as a dispersed phase, and has heat resistance and thermal shock resistance due to its base, and wear resistance and deformation resistance due to the distribution of WC particles and ZrO particles in the base. , and also has anti-seizure properties due to the presence of ■.
本発明合金の焼結原料である混合粉末の組成限定理由は
次のとおりである。The reasons for limiting the composition of the mixed powder, which is the raw material for sintering the alloy of the present invention, are as follows.
ＷＣ粉末＝５重量％以下
ＷＣ粒子は、焼結体の基地中に均一に分布して、焼結体
の硬度を高めることにより、プラグ表面の耐摩耗性を強
化する。その配合量を５重量％以下とするのは、それを
越えると、ＷＣ自体の低熱膨張係数のため、基地との熱
膨張差により、穿孔プラグの実使用時（厳しい熱衝撃を
受ける）においてクラックが発生し易（なるからである
。好ましくは１〜５重量％である。WC powder = 5% by weight or less The WC particles are uniformly distributed in the base of the sintered body and increase the hardness of the sintered body, thereby strengthening the wear resistance of the plug surface. The reason why the content is 5% by weight or less is that if it exceeds 5% by weight, WC itself will have a low coefficient of thermal expansion, and due to the difference in thermal expansion with the base, cracks will occur during actual use of the perforated plug (subject to severe thermal shock). This is because the content is likely to occur.The content is preferably 1 to 5% by weight.
ＺｒＯ□粉末８１５重量％以下
ＺｒＯ，粒子は、ＷＣ粒子と同じように焼結体の基地中
に均一に分布して焼結体の硬度を高め、穿孔プラグの表
面の耐摩耗性を向上させる。また、Ｚｒ０１粒子は比較
的熱膨張係数が大きいので、多量に配合しても、ＷＣ粒
子の場合と異なり、基地との熱膨張差によるクラックの
発生はない。しかし、配合量が１５重量％を越えると、
焼結体の靭性が低下し、プラグ使用時に加わる高荷重・
衝撃に十分耐え得なくなるので、１５重量％を上限とす
る。好ましくは１〜１３重量％である。ZrO□ powder 815% by weight or less ZrO particles are uniformly distributed in the base of the sintered body like the WC particles, increasing the hardness of the sintered body and improving the wear resistance of the surface of the perforated plug. Furthermore, since Zr01 particles have a relatively large coefficient of thermal expansion, even if a large amount is blended, unlike the case of WC particles, cracks will not occur due to the difference in thermal expansion with the matrix. However, if the amount exceeds 15% by weight,
The toughness of the sintered body decreases, and the high load and
The upper limit is set at 15% by weight since it will not be able to withstand impact sufficiently. Preferably it is 1 to 13% by weight.
上記ＷＣ粉末とＺｒ０ｚ粉末は、単独または複合的に配
合される。複合使用する場合の両者の割合は任意である
が、合計量は１５重量％以下とする。The above-mentioned WC powder and Zr0z powder are blended singly or in combination. When used in combination, the ratio of both is arbitrary, but the total amount is 15% by weight or less.
１５重量％を越えると、焼結体が脆くなり、プラグ使用
時の高荷重・衝撃に十分耐えなくなるからである。If it exceeds 15% by weight, the sintered body becomes brittle and cannot sufficiently withstand high loads and impacts when using the plug.
■粉末：１０重量％以下
■粉末は、焼結体の基地中に、■元素として存在し、基
地のＦｅ基合金との相互作用により、プラグ使用時に、
その表面に剥離性を有するスケールを発生させる。その
スケールは、高温・高圧下刃の使用条件下におけるプラ
グと穿孔加工材との界面にすぐれた断熱性と潤滑性とを
もたらし、プラグの焼付きを効果的に防止する保護膜と
して機能する。■粉末の配合１ｉ（Ｖ換算値）を１０重
量％以下とするは、それを越えると、焼結体が脆くなる
からである。好ましくは１〜５重量％である。■ Powder: 10% by weight or less ■ Powder exists as an element in the base of the sintered body, and due to interaction with the Fe-based alloy of the base, when using a plug,
A peelable scale is generated on the surface. The scale provides excellent heat insulation and lubricity to the interface between the plug and the perforated material under the conditions in which the lower blade is used at high temperatures and high pressures, and functions as a protective film that effectively prevents the plug from seizing. (2) The powder composition 1i (V converted value) is set to 10% by weight or less because if it exceeds this, the sintered body becomes brittle. Preferably it is 1 to 5% by weight.
Ｃｏ基合金粉末：１０〜２０重憧％
Ｃｏ基合金粉末は、Ｆｅ基合金粉末と共に、焼結体の基
地を構成し、焼結体を耐熱性および耐熱衝撃性にすぐれ
たものとする。配合量を１０重量％以上とするは、穿孔
プラグとして必要な耐熱性および耐熱衝撃性を確保する
ためである。配合量の増加に伴い、耐熱性、耐熱衝撃性
の向上をみるが、２０重量％を越えると、プラグ表面が
■によるスケールで保護されていても、焼付き等の問題
が生じるので、２０！１％を上限とする。Co-based alloy powder: 10 to 20% by weight Co-based alloy powder forms the base of the sintered body together with the Fe-based alloy powder, and makes the sintered body excellent in heat resistance and thermal shock resistance. The reason why the blending amount is 10% by weight or more is to ensure the heat resistance and thermal shock resistance necessary for the perforated plug. Heat resistance and thermal shock resistance improve as the amount is increased, but if it exceeds 20% by weight, problems such as seizure will occur even if the plug surface is protected by scale due to 20! The upper limit is 1%.
Ｆｅ基合金粉末： ５０（６０） 〜７５重量％Ｆｅ基
合金粉末は、焼結体の基地を構成する主原料であり、ま
た焼結体の強度を高める役割を有するほか、前記のよう
に■元素との相互作用により、プラグ表面に、焼付き防
止効果を有する剥離性スケールを形成する。その配合量
を５０重量％以上（Ｃｏ粉末を含まない場合は、６０重
量％以上）とするのは、それより少ないと、上記スケー
ルを発生させるための■との相互作用が不十分となるか
らであり、一方７５重量％を上限とするのは、それを越
えると、基地の耐熱性、耐熱衝撃性が低下するほか、変
形抵抗性が低くなり、プラグ使用時に高荷重・衝撃をう
けると、プラグ先端部が変形し易く、プラグ穿孔効率の
低下とプラグ寿命の低下を招くからである。Fe-based alloy powder: 50 (60) to 75% by weight Fe-based alloy powder is the main raw material constituting the base of the sintered body, and has the role of increasing the strength of the sintered body. Through interaction with the elements, a removable scale with an anti-seize effect is formed on the plug surface. The reason why the blending amount is 50% by weight or more (60% by weight or more if Co powder is not included) is because if it is less than that, the interaction with ① to generate the scale described above will be insufficient. On the other hand, the reason why the upper limit is 75% by weight is that if it exceeds 75% by weight, the heat resistance and thermal shock resistance of the base will decrease, as well as the deformation resistance will decrease, and if the plug is subjected to high loads and shocks when used, This is because the tip of the plug is easily deformed, resulting in a decrease in plug drilling efficiency and a decrease in plug life.
焼結体の基地を構成する上記Ｃｏ基合金粉末とＦｅ基合
金粉末の合計量（Ｃｏ粉末が配合される場合は、Ｃｏ粉
末とＣｏ基合金粉末とＦｅ基合金粉末との合計量）を、
８０重量％以上とするのは、それより少ないと、焼結体
が脆くなり、プラグ使用時の高荷重、衝撃に十分耐えな
くなり、また９０重量％を上限とするのは、それを越え
ると、基地の比率が高くなりすぎ、ＷＣ粒子、ＺｒＯ，
粒子による耐摩耗性、■による耐焼付性のいずれかある
いは両性質が損なわれ、プラグとしての働きが低下する
からである。The total amount of the above Co-based alloy powder and Fe-based alloy powder that constitute the base of the sintered body (if Co powder is blended, the total amount of Co powder, Co-based alloy powder, and Fe-based alloy powder),
The reason why the content is 80% by weight or more is that if it is less than that, the sintered body will become brittle and will not be able to withstand high loads and impacts when using the plug. The base ratio becomes too high, WC particles, ZrO,
This is because either or both of the wear resistance due to particles and the seizure resistance due to (1) are impaired, and the function as a plug is reduced.
Ｃｏ粉末：１５重量％以下
Ｃｏ粉末は、焼結体の基地をなすＣｏ基合金粉末のＣｏ
含有量を高めることにより、基地の耐熱性を向上させる
と共に、ＷＣ粒子の濡れ性を高め、基地とＷＣ粒子との
結合を強化する効果を有する。Co powder: 15% by weight or less Co powder is the Co powder of the Co-based alloy powder that forms the base of the sintered body.
Increasing the content has the effect of improving the heat resistance of the base, increasing the wettability of the WC particles, and strengthening the bond between the base and the WC particles.
その配合量の上限を１５重量％としたのは、それを越え
ても、効果の増加は殆どなく、経済的でないからである
。好ましくは１〜１０重量％である。The reason why the upper limit of the blending amount is set at 15% by weight is that even if the amount is exceeded, there is almost no increase in the effect and it is not economical. Preferably it is 1 to 10% by weight.
上記のように調合された混合粉末の焼結条件は特に限定
されないが、好ましくは熱間静水圧加圧焼結法により、
例えば温度： １０００〜１２００℃、加圧カニ ５０
０〜２０００ｋｇ ｆ ／ ｃｉの条件下に行われる。Sintering conditions for the mixed powder prepared as described above are not particularly limited, but preferably by hot isostatic pressing sintering method.
For example, temperature: 1000-1200℃, pressure crab 50
It is carried out under conditions of 0-2000 kg f/ci.
混合粉末を焼結原料として熱間静水圧加圧焼結法による
焼結を行って穿孔プラグ（ｌｌｋＬ１〜５、寛１１〜１
３）を製造した。The mixed powder was used as a sintering raw material and sintered using a hot isostatic pressure sintering method to form perforated plugs (llkL1-5, Kan11-1).
3) was manufactured.
第１表に各供試プラグの混合粉末の配合組成を示す。隘
１〜５は発明例、魚１１〜１３は混合粉末を構成するい
ずれかの、成分（表中、下線付き）が本発明の規定から
はずれている比較例である。また、隘１４は、従来例と
して別途準備した工具鋼（３Ｃｒ ｌＮ１−Ｆｅ）類
プラグ（鋳造品）である。Table 1 shows the composition of the mixed powder of each test plug. Numbers 1 to 5 are inventive examples, and Fish 11 to 13 are comparative examples in which one of the components (underlined in the table) of the mixed powder deviates from the specifications of the present invention. Further, the neck 14 is a tool steel (3Cr lN1-Fe) type plug (cast product) prepared separately as a conventional example.
プラグのサイズは、いずれも、外径４５＋ａｍ、高さ８
０１１である。The size of the plug is 45+am in outer diameter and 8mm in height.
It is 011.
各供試プラグについて、硬度測定、熱衝撃試験および摩
耗試験を行う一方、実機使用に供した。Each sample plug was subjected to hardness measurements, thermal shock tests, and wear tests, and was also used in actual equipment.
（１）原料粉末
（ａ）Ｃｏ基合金粉末
成分（ｗｔ％）：Ｃｒ３０、Ｗ１２、Ｃ２，５、Ｆｅ２
．０、ＣｏＢａｊ！（ステライ
ト＃１相当）。(1) Raw material powder (a) Co-based alloy powder components (wt%): Cr30, W12, C2,5, Fe2
．． 0, CoBaj! (Equivalent to Stellite #1).
平均粒径：２０μｍ
（ｂ）Ｆｅ基合金粉末
成分（ｗｔ％）：Ｃｒ２５、Ｎ １２０ＳＣ０，０７、
ＦｅＢａ１（ＳＵＳ３１０ Ｓ相
当）
平均粒径：２０μｍ
（Ｃ） Ｖ粉末（Ｆｅ −８０％■）平均粒径：２０
μｍ
（ｄ）ＷＣ粉末：平均粒径１０μｍ
（ｅ）ＺｒＯ，粉末：平均粒径１０１１ｍ（１０１ｌ粉
末：平均粒径５μｍ
（ｎ）熱間静水圧加圧焼結
温度： １１００℃、加圧カニ １０００に＋ｒ ｆ
／−焼結時間：２Ｈｒ
（ＩＩＩ）特性試験
（１） 熱衝撃試験
各供試プラグを１１００℃に加熱後、水冷（水中浸漬）
する急熱・急冷の熱サイクルを反復し、１０回の急熱・
急冷の後にもクランクの発生がないものを「良」と判定
した。それ以外のものは、クランク発生までの反復回数
を示す。Average particle size: 20 μm (b) Fe-based alloy powder components (wt%): Cr25, N 120SC0,07,
FeBa1 (equivalent to SUS310 S) Average particle size: 20 μm (C) V powder (Fe -80% ■) Average particle size: 20
μm (d) WC powder: average particle size 10 μm (e) ZrO, powder: average particle size 1011 m (101 l powder: average particle size 5 μm (n) Hot isostatic pressure sintering temperature: 1100°C, pressure crab 1000 ni+r f
/-Sintering time: 2Hr (III) Characteristics test (1) Thermal shock test After heating each sample plug to 1100℃, water cooling (immersion in water)
The heat cycle of rapid heating and rapid cooling is repeated, and 10 times of rapid heating and cooling are performed.
A sample in which no cranking occurred even after rapid cooling was judged to be "good". Others indicate the number of repetitions until cranking occurs.
（２）摩耗試験
各供試プラグから板状試験片を切り出し、大越式摩耗試
験機により、比摩耗量（Ｗ Ｓ ＞を測定（常温試験）
。(2) Wear test A plate-shaped test piece was cut out from each sample plug, and the specific wear amount (W S > was measured using an Okoshi type abrasion tester (normal temperature test)
.
相手材（回転輪）：５ＵＪ２
すべり速度：３，４ｍ／ｓ
すべり距Ｉ１１：２００ｍ
最終荷重：６．４ｋｇｆ
ＣＩ’／）実機試験
１３Ｃｒ鋼材の穿孔圧延用ピアサ−プラグとして使用し
、耐クランク性、耐焼付性、耐変形性、および耐溶損性
の各特性を比較評価した。耐タラツク性については、ク
ランクの発生により、使用し得なくなった段階を耐用限
界とし、耐焼付性は、プラグ表面に焼付が生じ、パイプ
内面に疵が付き始める段階を耐用限界と判定した。また
耐変形性は、プラグ先端の変形により、穿孔効率が６０
％を下田る段階を、耐溶損性は、溶損によりプラグとし
ての機能を失う段階を、それぞれ耐用限界と判定した。Mating material (rotating wheel): 5UJ2 Sliding speed: 3.4 m/s Sliding distance I11: 200 m Final load: 6.4 kgf CI'/) Actual machine test Used as a piercer plug for drilling and rolling of 13Cr steel, with crank resistance, The properties of seizure resistance, deformation resistance, and erosion resistance were comparatively evaluated. As for drag resistance, the service life limit was determined to be the stage at which it became unusable due to the occurrence of cranking, and for seizure resistance, the service life limit was determined to be the stage at which seizure occurred on the plug surface and flaws began to appear on the inner surface of the pipe. In addition, as for deformation resistance, the drilling efficiency can be increased by 60% due to the deformation of the plug tip.
The service life limit was determined to be the stage at which the plug lost its function as a plug due to melting damage, and the stage at which the plug lost its function due to melting damage.
第１表に示すように、従来の工具鋼製穿孔プラグ（Ｎｌ
１１４）の実機使用での穿孔可能本数は、わずかに４本
（廃却原因：溶損）であるのに対し、本発明の穿孔プラ
グは、その数倍の耐久性を有している。また、本発明プ
ラグの廃却原因は、いずれも、微小クランクの発生であ
り、廃却段階においても、焼付、変形および溶損は殆ど
発生していない。As shown in Table 1, the conventional tool steel perforated plug (Nl
114), the number of holes that can be drilled in actual use is only 4 (cause of disposal: melting damage), whereas the hole plug of the present invention has several times the durability. Furthermore, the cause of the disposal of the plugs of the present invention is the occurrence of minute cranks, and almost no seizure, deformation, or melting damage occurs even during the disposal stage.
一方、原料配合の不適当な比較例患１１．１２の各プラ
グは、従来品である合金鋼製プラグ（Ｎｌ１１４）に比
し、耐久性の改良がみられるものの、隘１１（ＷＣＳＺ
ｒＯｔを含まない）は、先端部の変形により、またＮ
１１２（’１１’を含まない）は焼付の発生により、比
較的早期に廃却を余儀なくされている。On the other hand, the plugs of Comparative Example No. 11 and No. 12, which had an inappropriate blend of raw materials, showed improved durability compared to the conventional alloy steel plug (Nl114).
(not including rOt) due to the deformation of the tip and N
112 (not including '11') is forced to be discarded relatively early due to the occurrence of seizure.
なお、Ｎａ１３ （Ｗ Ｃ−Ｚ ｒ Ｏｚ過多、■を含
まない）では、耐熱衝撃性に乏しく、使用開始時の急熱
により割れが発生している。Note that Na13 (excessive W C-Z r Oz, not containing ■) has poor thermal shock resistance, and cracks occur due to rapid heating at the beginning of use.
本発明の焼結合金からなる穿孔プラグは、従来の工具鋼
製プラグに比し、穿孔プラグとして望まれる緒特性を具
備し、従来の穿孔プラグを著しく凌ぐ耐用寿命を有して
いるので、穿孔圧延操業の安定、効率化、および製管品
質の向上に大きく寄与する。The perforation plug made of the sintered alloy of the present invention has properties desirable for a perforation plug compared to conventional tool steel plugs, and has a service life significantly longer than conventional perforation plugs. It greatly contributes to the stability and efficiency of rolling operations and to the improvement of pipe manufacturing quality.
Claims (2)
粉末：６０〜７５重量％、該Ｃｏ基合金粉末とＦｅ基合
金粉末の合計量：８０〜９０重量％、ＷＣ粉末：５重量
％以下および／またはＺｒＯ＿２粉末：１５重量％以下
、該ＷＣ粉末とＺｒＯ＿２粉末の合計量：１５重量％以
下、Ｖ粉末および／またはＦｅ−Ｖ粉末：１０重量％以
下（Ｖ換算値）からなる混合粉末を焼結してなる穿孔プ
ラグ用耐熱合金。(1) Co-based alloy powder: 10-20% by weight, Fe-based alloy powder: 60-75% by weight, total amount of the Co-based alloy powder and Fe-based alloy powder: 80-90% by weight, WC powder: 5% by weight % or less and/or ZrO_2 powder: 15% by weight or less, the total amount of the WC powder and ZrO_2 powder: 15% by weight or less, V powder and/or Fe-V powder: 10% by weight or less (V conversion value). A heat-resistant alloy for hole plugs made by sintering powder.
粉末：５０〜７５重量％、Ｃｏ粉末：１５重量％以下、
該Ｃｏ基合金粉末とＦｅ基合金粉末とＣｏ粉末の合計量
：８０〜９０重量％、ＷＣ粉末：５重量％以下および／
またはＺｒＯ＿２粉末：１５重量％以下、該ＷＣ粉末と
ＺｒＯ＿２粉末の合計量：１５重量％以下、Ｖ粉末およ
び／またはＦｅ−Ｖ粉末：１０重量％以下（Ｖ換算値）
からなる混合粉末を焼結してなる穿孔プラグ用耐熱合金(2) Co-based alloy powder: 10-20% by weight, Fe-based alloy powder: 50-75% by weight, Co powder: 15% by weight or less,
Total amount of the Co-based alloy powder, Fe-based alloy powder and Co powder: 80 to 90% by weight, WC powder: 5% by weight or less, and/or
Or ZrO_2 powder: 15% by weight or less, total amount of the WC powder and ZrO_2 powder: 15% by weight or less, V powder and/or Fe-V powder: 10% by weight or less (V conversion value)
A heat-resistant alloy for perforated plugs made by sintering a mixed powder consisting of
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61164277A JPH0633445B2 (en) | 1986-07-11 | 1986-07-11 | Heat resistant alloy for piercing plugs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61164277A JPH0633445B2 (en) | 1986-07-11 | 1986-07-11 | Heat resistant alloy for piercing plugs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6320434A true JPS6320434A (en) | 1988-01-28 |
| JPH0633445B2 JPH0633445B2 (en) | 1994-05-02 |
Family
ID=15790030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61164277A Expired - Lifetime JPH0633445B2 (en) | 1986-07-11 | 1986-07-11 | Heat resistant alloy for piercing plugs |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633445B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996021746A1 (en) * | 1995-01-11 | 1996-07-18 | Jonathan James Saveker | High speed cutting tool |
| JP2009209410A (en) * | 2008-03-04 | 2009-09-17 | Kobe Steel Ltd | Mixed powder for powder metallurgy, and iron powder sintered compact |
| US20150184276A1 (en) * | 2012-06-05 | 2015-07-02 | Nippon Steel & Sumitomo Metal Corporation | Method for producing plug for piercing-rolling |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59118852A (en) * | 1982-12-27 | 1984-07-09 | Tatsuro Kuratomi | Composite high speed steel of sintered hard alloy and its production |
-
1986
- 1986-07-11 JP JP61164277A patent/JPH0633445B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59118852A (en) * | 1982-12-27 | 1984-07-09 | Tatsuro Kuratomi | Composite high speed steel of sintered hard alloy and its production |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996021746A1 (en) * | 1995-01-11 | 1996-07-18 | Jonathan James Saveker | High speed cutting tool |
| EP0802987B1 (en) * | 1995-01-11 | 2001-11-14 | SAVEKER, Jonathan James | High speed cutting tool |
| JP2009209410A (en) * | 2008-03-04 | 2009-09-17 | Kobe Steel Ltd | Mixed powder for powder metallurgy, and iron powder sintered compact |
| US20150184276A1 (en) * | 2012-06-05 | 2015-07-02 | Nippon Steel & Sumitomo Metal Corporation | Method for producing plug for piercing-rolling |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0633445B2 (en) | 1994-05-02 |
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