JPH04365817A - Production of surface coated metal - Google Patents
Production of surface coated metalInfo
- Publication number
- JPH04365817A JPH04365817A JP9513691A JP9513691A JPH04365817A JP H04365817 A JPH04365817 A JP H04365817A JP 9513691 A JP9513691 A JP 9513691A JP 9513691 A JP9513691 A JP 9513691A JP H04365817 A JPH04365817 A JP H04365817A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- hot
- coating layer
- working
- cold working
- 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.)
- Withdrawn
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 38
- 239000002184 metal Substances 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000005482 strain hardening Methods 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 14
- 238000000137 annealing Methods 0.000 claims abstract description 11
- 239000011247 coating layer Substances 0.000 claims description 35
- 238000001513 hot isostatic pressing Methods 0.000 claims description 15
- 239000007769 metal material Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 abstract description 42
- 229910045601 alloy Inorganic materials 0.000 abstract description 13
- 239000000956 alloy Substances 0.000 abstract description 13
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 8
- 239000002775 capsule Substances 0.000 abstract description 6
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- 229910000856 hastalloy Inorganic materials 0.000 abstract description 5
- 229910000851 Alloy steel Inorganic materials 0.000 abstract description 4
- 229910000975 Carbon steel Inorganic materials 0.000 abstract description 3
- 229910018487 Ni—Cr Inorganic materials 0.000 abstract description 3
- 229910001347 Stellite Inorganic materials 0.000 abstract description 3
- 239000010962 carbon steel Substances 0.000 abstract description 3
- 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 abstract description 3
- 230000002706 hydrostatic effect Effects 0.000 abstract description 3
- 239000010935 stainless steel Substances 0.000 abstract description 3
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 3
- 238000005098 hot rolling Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 16
- 238000012545 processing Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 229910000990 Ni alloy Inorganic materials 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- 239000010953 base metal Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910001119 inconels 625 Inorganic materials 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000007751 thermal spraying Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910018138 Al-Y Inorganic materials 0.000 description 1
- 229910000946 Y alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Pressure Welding/Diffusion-Bonding (AREA)
- Heat Treatment Of Steel (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分】本発明は表面被覆金属の製造方法に
係り、さらに詳しくは耐食性、耐高温腐食性、耐酸化性
、耐摩耗性などの特性を有する層で金属の表面を被覆す
る方法に関するものである。[Industrial Application] The present invention relates to a method for manufacturing surface-coated metal, and more specifically, a method for coating the surface of metal with a layer having properties such as corrosion resistance, high-temperature corrosion resistance, oxidation resistance, and wear resistance. It is related to.
【０００２】0002
【従来の技術】近年、産業の進歩と技術の発展により材
料はますます厳しい環境で使用されるようになってきた
。例えば、エネルギー資源開発では生産流体中に硫化水
素や炭酸ガスを多量に含む石油や天然ガス（いわゆるサ
ワーオイルやサワーガス）が開発されているが、開発に
使用される油井管やラインパイプなどの材料として低合
金鋼では腐食や割れを起こすため、ハステロイＣ−２７
６やインコネル６２５（いずれも商品名）といったニッ
ケル合金が既に使用されている。しかし、これらの合金
は非常に高価であることが大きな難点である。従って、
構造材の表面にのみこれら合金を合わせ材として使用し
、強度は下地の金属（例えば低合金鋼）で確保するいわ
ゆるクラッド鋼の使用が考えられた。BACKGROUND OF THE INVENTION In recent years, due to industrial progress and technological development, materials have come to be used in increasingly harsh environments. For example, in energy resource development, petroleum and natural gas (so-called sour oil and sour gas) containing large amounts of hydrogen sulfide and carbon dioxide are being developed as production fluids, and the materials used in the development, such as oil country tubular goods and line pipes, are being developed. Hastelloy C-27
Nickel alloys such as 6 and Inconel 625 (all trade names) are already in use. However, a major drawback is that these alloys are very expensive. Therefore,
It has been considered to use so-called clad steel, in which these alloys are used as a laminating material only on the surface of the structural material, and the strength is ensured by the underlying metal (for example, low-alloy steel).
【０００３】クラッド鋼はその形状が管の場合には継目
無管或いは溶接管として、形状が板の場合には圧延板と
して種々の製造方法が確立または提案されている。しか
し、いずれも製造プロセスが複雑で歩留りが悪いという
難点に加えて、ハステロイＣ−２７６やインコネル６２
５といったニッケル合金を合わせ材とするクラッド鋼、
中でもクラッド鋼管は製造が非常に困難であって未だ実
用化されていない。本発明者等の研究によればその理由
は、これら合金の熱間加工時の変形抵抗が母材となる低
合金鋼や炭素鋼のそれに比べて著しく大きいため、熱間
圧延などの通常の製造プロセスでは合わせ材と母材とを
均一に加工できず、両金属が独立に変形するので接合す
ることが難しいことにあると考えられる。[0003] Various manufacturing methods have been established or proposed for producing clad steel, such as seamless pipe or welded pipe when the shape is a pipe, and rolling plate when the shape is a plate. However, in addition to the drawbacks of complicated manufacturing processes and low yields, both Hastelloy C-276 and Inconel 62
Clad steel made of nickel alloy such as 5,
Among them, clad steel pipes are extremely difficult to manufacture and have not yet been put into practical use. According to research by the present inventors, the reason for this is that the deformation resistance of these alloys during hot working is significantly greater than that of the base materials, low alloy steel and carbon steel. This is thought to be due to the fact that the mating material and base metal cannot be processed uniformly in the process, and both metals deform independently, making it difficult to join them.
【０００４】一方、バルブのスピンドル部や往復運動形
ポンプのピストンおよびシリンダーなどの摺動部、ある
いはスラリー輸送用パイプといった部材では耐摩耗性が
必要であるため、例えばステライト合金（商品名）など
が、肉盛あるいは溶射されて使用されている。さらに、
高温で使用される圧力容器や鋼管には例えばＮｉ−Ｃｒ
合金やＮｉ−Ｃｒ−Ａｌ−Ｙ合金やＣｏ−Ｃｒ−Ａｌ−
Ｙ合金といった耐酸化性材料が、肉盛あるいは溶射によ
って被覆される場合がある。しかし、これらはいずれも
最終製品に対して肉盛あるいは溶射されるため非常にコ
ストの高いものとなっている。加えて、小径パイプの内
面といった狭い部分には被覆できないという難点を有し
ている。On the other hand, parts such as valve spindles, sliding parts such as pistons and cylinders of reciprocating pumps, and slurry transport pipes require wear resistance, so for example, Stellite alloy (trade name) is used. , overlay or thermal spraying. moreover,
For example, Ni-Cr is used for pressure vessels and steel pipes used at high temperatures.
alloy, Ni-Cr-Al-Y alloy, Co-Cr-Al-
An oxidation-resistant material such as Y alloy may be coated by overlay or thermal spraying. However, all of these materials are overlaid or thermally sprayed onto the final product, making them very costly. In addition, it has the disadvantage that it cannot coat narrow areas such as the inner surface of small-diameter pipes.
【０００５】ところで、熱間静水圧プレス法は従来から
よく知られた技術であって、この方法を利用したクラッ
ド製品の提案も成されている。例えば、特開昭６１−２
２３１０６号公報には、高合金粉末を粉末の固相線温度
以上に加熱すると共にガス加圧して能率よく高合金クラ
ッド製品を製造する方法が開示されている。しかし、こ
の方法をはじめとして従来報告ないしは提案されている
熱間静水圧プレス法を利用したクラッド製品の製造方法
は何れも最終製品に被覆するものであったため、コスト
が高く、かつ大型製品や長尺品（例えば１２ｍ長さ）の
製造はできないという難点を有していた。By the way, the hot isostatic pressing method is a well-known technique, and clad products using this method have also been proposed. For example, JP-A-61-2
Publication No. 23106 discloses a method for efficiently manufacturing a high alloy clad product by heating a high alloy powder to a temperature higher than the solidus temperature of the powder and pressurizing a high alloy powder with gas. However, this method and other previously reported or proposed manufacturing methods for cladding products using hot isostatic pressing methods all involve coating the final product, resulting in high costs and large or long products. It had the disadvantage that it was not possible to manufacture a length product (for example, 12 m long).
【０００６】また、特開昭６１−１９０００７号公報お
よび特開昭６１−１９０００８号公報には、それぞれ厚
肉の可鍛性金属円筒およびこれと径を異にする薄肉金属
円筒によって構成されるカプセル内に粉末を充填して密
閉しこれを冷間等方静水圧によって加圧して、粉末を圧
縮してビレットを作り、これを熱間押出し加工する方法
、また、同心円筒状をなす内外二重壁を有するゴムまた
は類似物質の容器内に、可鍛性金属の円筒材料を一方の
容器壁に密着させて収容すると共に、他方の容器壁と上
記円筒材料との間に粉末材料を充填して密閉し、これを
冷間等方静水圧によって加圧し、この容器から取り出し
た材料をビレットとして熱間押出しする方法が開示され
ている。これらの方法によっても、前述したハステロイ
Ｃ−２７６やインコネル６２５といったニッケル合金等
の変形抵抗の大きな材料の被覆層を形成して熱間加工し
た場合、母材との密着が弱いため母材からの剥離や被覆
層の割れの発生という難点は解消されるものではない。[0006] Furthermore, Japanese Patent Application Laid-open No. 61-190007 and Japanese Patent Application Laid-Open No. 61-190008 each disclose a capsule composed of a thick-walled malleable metal cylinder and a thin-walled metal cylinder with a diameter different from the thick-walled malleable metal cylinder. A method is to fill the inside with powder, seal it, pressurize it with cold isostatic hydrostatic pressure, compress the powder to make a billet, and hot extrude it. A cylindrical material made of malleable metal is housed in a container made of rubber or a similar material having walls in close contact with one container wall, and a powder material is filled between the other container wall and the cylindrical material. A method is disclosed in which the container is sealed, pressurized by cold isostatic pressure, and the material taken out from the container is hot extruded as a billet. Even with these methods, when a coating layer of a material with high deformation resistance, such as a nickel alloy such as Hastelloy C-276 or Inconel 625, is formed and hot worked, the adhesion to the base material is weak, resulting in deformation from the base material. However, the problems of peeling and cracking of the coating layer remain unresolved.
【０００７】これに対して本発明者らは、特開昭６４−
２０２号公報において、金属素材の表面に、他種金属の
粉末を該他種金属の固相線温度以下でガス圧を負荷する
熱間静水圧プレス（ＨＩＰ）によって被覆層として形成
せしめた後に、熱間加工を施して延伸する方法、さらに
被覆層として形成せしめた後に溶体化処理を施して熱間
加工を施して延伸する方法、あるいは均熱処理を加えた
後直ちに熱間加工を施して延伸する方法などを提案して
いる。しかし、熱間加工ままでは製品の寸法精度に問題
が生じ、それを解消するために熱間加工後さらに冷間に
よって延伸する場合には被覆層の剥離、割れの問題が生
じる。[0007] In contrast, the present inventors have proposed
In Publication No. 202, after forming a powder of another metal as a coating layer on the surface of a metal material by hot isostatic pressing (HIP) in which a gas pressure is applied at a temperature below the solidus temperature of the other metal, A method of applying hot processing and stretching, a method of forming a coating layer and then subjecting it to solution treatment and then subjecting it to hot working and stretching, or a method of applying soaking treatment and immediately subjecting it to hot working and stretching. We are proposing methods etc. However, if the product is left hot-processed, there will be a problem in the dimensional accuracy of the product, and if the product is cold-stretched after hot-processing to solve this problem, problems such as peeling and cracking of the coating layer will occur.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、耐食性、耐
高温腐食性、耐酸化性、耐摩耗性など表面被覆が目的と
する特性を母材に具備せしめた材料を、安価にかつ容易
に精度良く製造する方法を提供するものである。[Problems to be Solved by the Invention] The present invention provides a method for easily and inexpensively producing a material whose base material has the properties desired by the surface coating, such as corrosion resistance, high-temperature corrosion resistance, oxidation resistance, and abrasion resistance. This provides a method for manufacturing with high precision.
【０００９】[0009]
【課題を解決するための手段】本発明は上記の目的を解
決すべく、その後も種々の実験と検討を重ねた結果、Ｈ
ＩＰによって被覆層を形成し熱間加工を施して延伸した
材料を軟化焼鈍すると冷間加工性が一段と改善され、加
工量が少ない場合には被覆層に割れや疵などの欠陥を生
ずることなく冷間加工できることを見いだし、さらに、
加工量を大きく取りたい場合には冷間加工後再度軟化焼
鈍・冷間加工を繰り返すことにより、目標とする任意の
寸法まで延伸することが可能であることを見いだしたこ
とにより完成されたものであり、その要旨とするところ
は、金属素材の表面に、他種金属の粉末を熱間静水圧プ
レスによって被覆層として形成せしめた後に熱間加工を
施して延伸し、その後軟化焼鈍をしたのち冷間加工を施
して延伸するか或いは、軟化焼鈍をしたのち冷間加工を
施すことを２回以上繰り返すことを特徴とする表面被覆
鋼管の製造方法にある。[Means for Solving the Problems] In order to solve the above objects, the present invention has been made as a result of various experiments and studies.
Cold workability is further improved by softening and annealing a material that has been stretched after hot working after forming a coating layer using IP.If the amount of processing is small, the coating layer can be cooled without producing defects such as cracks or flaws. We discovered that it is possible to perform machining, and furthermore,
This was achieved by discovering that if a large amount of processing is desired, it is possible to stretch the material to the desired dimension by repeating the softening annealing and cold working after cold working. The gist of this is that a powder of another metal is formed as a coating layer on the surface of a metal material by hot isostatic pressing, then hot worked and stretched, then softened and annealed, and then cooled. A method for manufacturing a surface-coated steel pipe, characterized by repeating two or more processes of subjecting it to preliminary working and drawing, or to subjecting it to softening annealing and then cold working, twice or more.
【００１０】ここで「母材」となる金属素材及び「合わ
せ材」となる他種金属の種類については格別に制限され
るものではなく、例えば金属素材としては炭素鋼、低合
金鋼、ステンレス鋼、ニッケル及びニッケル合金、コバ
ルト及びコバルト合金、チタン及びチタン合金などが挙
げられる。一方、他種金属としては耐食性、耐高温腐食
性、耐酸化性、耐摩耗性などの機能のうち、必要な機能
に応じて選択すればよく、例えばハステロイ、ステライ
ト、Ｎｉ−Ｃｒ合金、ステンレス鋼、Ｆｅ基超合金、ニ
ッケル及びニッケル合金、コバルト及びコバルト合金、
チタン及びチタン合金などが挙げることができる。[0010] Here, there are no particular restrictions on the metal material serving as the "base material" and the types of other metals serving as the "laminating material." For example, the metal materials include carbon steel, low alloy steel, and stainless steel. , nickel and nickel alloys, cobalt and cobalt alloys, titanium and titanium alloys, and the like. On the other hand, other metals may be selected depending on the required functions such as corrosion resistance, high-temperature corrosion resistance, oxidation resistance, and wear resistance, such as hastelloy, stellite, Ni-Cr alloy, and stainless steel. , Fe-based superalloys, nickel and nickel alloys, cobalt and cobalt alloys,
Examples include titanium and titanium alloys.
【００１１】[0011]
【作用】以下本発明を詳細に説明する。まず本発明にお
いては金属素材の表面に、他種金属の被覆層をＨＩＰに
よって形成せしめるのであるが、他種金属は粉末を用い
て、例えば図１に示す要領で金属素材１と他種金属粉末
２とをカプセル３内に充填・密閉し、次いで熱間静水圧
プレスして他種金属粉末を金属層として形成せしめると
同時に被覆層と素材金属とを金属結合させることができ
、接合界面には充分な接合強度を持たせることができる
。この時、次の工程で良好に熱間加工するためには、被
覆層の熱間加工性を確保しなければならないが、そのた
めには被覆層内に気孔を残留させないことが重要であり
、密閉容器内を真空にすることと充分に高い温度と圧力
で熱間静水圧プレスすることが重要である。そのために
は真空度は１×１０−３Ｔｏｒｒより良いことが好まし
い。[Operation] The present invention will be explained in detail below. First, in the present invention, a coating layer of a different metal is formed on the surface of a metal material by HIP. 2 is filled and sealed in the capsule 3, and then hot isostatically pressed to form the other metal powder as a metal layer, and at the same time, the coating layer and the raw metal can be metallically bonded, and the bonding interface is Sufficient bonding strength can be provided. At this time, in order to ensure good hot working in the next step, it is necessary to ensure hot workability of the coating layer, but for this purpose it is important not to leave any pores in the coating layer. It is important to create a vacuum inside the container and to perform hot isostatic pressing at a sufficiently high temperature and pressure. For this purpose, the degree of vacuum is preferably better than 1 x 10-3 Torr.
【００１２】ＨＩＰ温度は母材金属と合わせ材金属の種
類によって異なるが、熱間加工性を良好に保つためには
両方の金属の固相線温度より低い温度でなければならな
い。それは、固相線温度を越えると冷却時に成分元素の
偏析を生じ、次の工程に於ける熱間加工性が著しく低下
するからである。ただし、ＨＩＰ時間を短縮するには、
上記温度範囲内でできるだけ高い温度とすることが有効
である。一方ＨＩＰ圧力は高いほどＨＩＰ温度・時間を
減少できる。[0012] The HIP temperature varies depending on the types of the base metal and the joining metal, but in order to maintain good hot workability, the HIP temperature must be lower than the solidus temperature of both metals. This is because if the solidus temperature is exceeded, component elements will segregate during cooling, and hot workability in the next step will be significantly reduced. However, to shorten HIP time,
It is effective to set the temperature as high as possible within the above temperature range. On the other hand, the higher the HIP pressure, the lower the HIP temperature and time.
【００１３】次に本発明においては被覆層形成後熱間加
工を行うか、或いは上記被覆層形成後均熱処理を加えた
後直ちに熱間加工を行うか、もしくは上記被覆層形成後
溶体化処理を施した後に熱間加工を行うのであるが、上
記の条件で被覆層を形成した場合には複合材であっても
通常と同様にして熱間加工することができる。本発明に
おける熱間加工の目的は被覆した金属素材を延伸するこ
とによって長尺の表面被覆金属を製造したり、或いは複
雑な形状の表面被覆金属を製造することにあり、製品の
形状に応じて熱間圧延、熱間鍛造、熱間押出などの熱間
加工法を適用することができる。なお、本発明において
熱間加工とは母材である金属素材及び合わせ材である被
覆金属が成形等の目的で通常加工される温度範囲での加
工を指すが、加工温度の選定に際しては母材及び被覆層
の両方に対して適切な温度を選定する必要がある。[0013] Next, in the present invention, hot working is carried out after the formation of the coating layer, or hot processing is carried out immediately after the soaking treatment is carried out after the formation of the coating layer, or solution treatment is carried out after the formation of the coating layer. After the coating is applied, hot working is performed, and when the coating layer is formed under the above conditions, even a composite material can be hot worked in the same manner as usual. The purpose of hot working in the present invention is to produce a long surface-coated metal or a complex-shaped surface-coated metal by stretching the coated metal material. Hot processing methods such as hot rolling, hot forging, and hot extrusion can be applied. Note that in the present invention, hot working refers to processing in the temperature range in which the base metal material and the coating metal as the laminated material are normally processed for purposes such as forming, but when selecting the processing temperature, Appropriate temperatures need to be selected for both the temperature and the coating layer.
【００１４】次に本発明においては軟化焼鈍をしたのち
冷間加工を施して延伸するか、もしくは軟化焼鈍をした
のち冷間加工を施すことを２回以上繰り返すのであるが
、本発明における軟化焼鈍の目的は、主に冷間加工によ
り加工硬化した材料を軟化させたり、熱間加工後の冷却
途中に被覆層中に析出した粗大析出物を固溶・消失させ
たり加工歪を除去することにより、次の工程である冷間
加工における冷間加工性を一段と改善することにある。
焼鈍温度の選定に際しては母材及び被覆層の両方に対し
て適切な温度を選定する必要があることは言うまでもな
い。また、本発明における冷間加工の目的は、主に表面
被覆金属を最終製品の寸法まで精度良く製造することに
あり、製品の形状に応じて冷間圧延、冷間引抜などの冷
間加工法を適用することができる。[0014] Next, in the present invention, softening annealing is performed, followed by cold working and stretching, or softening annealing and then cold working are repeated two or more times. The purpose of this is to soften materials that have been work-hardened by cold working, to dissolve and eliminate coarse precipitates that have formed in the coating layer during cooling after hot working, and to remove working distortion. The objective is to further improve cold workability in the next step, cold working. Needless to say, when selecting the annealing temperature, it is necessary to select an appropriate temperature for both the base material and the coating layer. In addition, the purpose of cold working in the present invention is mainly to manufacture the surface coated metal with high precision to the dimensions of the final product, and depending on the shape of the product, cold working methods such as cold rolling and cold drawing may be used. can be applied.
【００１５】本発明においては金属素材の形状が板或い
はパイプの場合には被覆層を一つの面、例えば板の上面
、パイプの内面、パイプの外面としても良く、両面すな
わち板の上・下両面、パイプの内・外両面とすることも
可能である。製品が使用される状況に応じて、一面ある
いは両面のうち適切なほうを選択すれば良い。その他冷
間加工を行った後に、例えば母材の強度、靭性等を調質
する目的で行う焼き入れ、焼き戻し、焼きならし等の種
々の熱処理を行うこともできる。In the present invention, when the shape of the metal material is a plate or a pipe, the coating layer may be formed on one surface, such as the upper surface of the plate, the inner surface of the pipe, or the outer surface of the pipe, or on both surfaces, that is, both the upper and lower surfaces of the plate. , it is also possible to use both the inside and outside of the pipe. Depending on the situation in which the product is used, one or both sides may be selected as appropriate. In addition, after cold working, various heat treatments such as quenching, tempering, and normalizing can be performed for the purpose of refining the strength, toughness, etc. of the base material.
【００１６】本発明は腐食性物質に対する抵抗を必要と
する製品、高温酸化に対する抵抗を必要とする製品及び
耐摩耗性を必要とする製品などを製造するために応用す
ることができ、例えば管、容器、板および棒など種々の
形状に応用することができる。あるいはさらに成形、溶
接などを行って製品を製造するための素材として使用す
ることも可能であることは言うまでもない。The present invention can be applied to produce products that require resistance to corrosive substances, products that require resistance to high temperature oxidation, and products that require wear resistance, such as pipes, It can be applied to various shapes such as containers, plates, and rods. It goes without saying that it can also be used as a material for manufacturing products by further processing such as molding and welding.
【００１７】[0017]
【実施例】以下に本発明の実施例について説明する。表
１に示す材料及び製造条件で熱間加工に供する素材を製
造した。ここで、本発明例Ｎｏ．１，２はスラブの上面
に被覆層を形成した例、本発明例Ｎｏ．３はスラブの両
面に被覆層を形成した例、本発明例Ｎｏ．４〜６は中空
ビレットの内面に被覆層を形成した例、本発明例Ｎｏ．
７は中空ビレットの内外面に被覆層を形成した例である
。いずれも被覆層用の合金粉末を熱間静水圧プレスによ
って金属素材の表面に被覆層として形成せしめた。各々
の形状を図２、図３、図４及び図５にそれぞれ示す。
図２は中空ビレット４の内面に被覆層５を形成した例で
ある。図３は中空ビレット４の内面および外面に被覆層
５を形成した例である。図４はスラブ６の上面に被覆層
５を形成した例である。図５はスラブ６の上面および下
面に被覆層５を形成した例である。一方、比較例Ｎｏ．
８〜１２はいずれも合金粉末を熱間静水圧プレス法によ
って中空ビレットの内面に被覆層として形成せしめた例
である。[Examples] Examples of the present invention will be described below. Materials to be subjected to hot working were manufactured using the materials and manufacturing conditions shown in Table 1. Here, the present invention example No. 1 and 2 are examples in which a coating layer was formed on the upper surface of the slab, and invention example No. Invention Example No. 3 is an example in which a coating layer was formed on both sides of the slab. 4 to 6 are examples in which a coating layer was formed on the inner surface of a hollow billet, and invention example No.
7 is an example in which a coating layer was formed on the inner and outer surfaces of a hollow billet. In each case, the alloy powder for the coating layer was formed as a coating layer on the surface of the metal material by hot isostatic pressing. The respective shapes are shown in FIGS. 2, 3, 4, and 5, respectively. FIG. 2 shows an example in which a coating layer 5 is formed on the inner surface of a hollow billet 4. FIG. 3 shows an example in which a coating layer 5 is formed on the inner and outer surfaces of the hollow billet 4. FIG. 4 shows an example in which the coating layer 5 is formed on the upper surface of the slab 6. FIG. 5 shows an example in which a coating layer 5 is formed on the upper and lower surfaces of the slab 6. On the other hand, comparative example No.
Examples 8 to 12 are all examples in which alloy powder was formed as a coating layer on the inner surface of a hollow billet by hot isostatic pressing.
【００１８】次にこれらの材料を表２に示す条件で熱間
加工し、その後冷間加工して表面被覆金属を製造した。
その結果を表２に合わせて示す。また良好に冷間加工で
きたものについては、各種試験を行った結果も併せて表
２に示した。表２で曲げ試験はＪＩＳ Ｇ ０６０
１およびＪＩＳ Ｚ ３１２４に準じて行い、超音
波探傷試験はＪＩＳ Ｇ ０６０１及びＪＩＳ
Ｚ ３１２４に準じて行った。Next, these materials were hot worked under the conditions shown in Table 2, and then cold worked to produce surface coated metals. The results are also shown in Table 2. Table 2 also shows the results of various tests for those that could be successfully cold worked. In Table 2, the bending test is JIS G 060.
1 and JIS Z 3124, and ultrasonic flaw detection tests are conducted in accordance with JIS G 0601 and JIS
It was carried out according to Z 3124.
【００１９】表２のうち比較例であるＮｏ．８，９は熱
間加工後ただちに冷間加工したため、Ｎｏ．１０，１１
は冷間加工後軟化焼鈍せずに再び冷間加工したために、
何ずれも被覆層に割れを生じている。また、Ｎｏ．１２
は熱間加工ままで、冷間加工を行っていないためゆがみ
を生じ、製品の寸法精度が悪くなっている。[0019] In Table 2, No. 2 is a comparative example. No. 8 and 9 were cold worked immediately after hot working, so No. 10,11
Because it was cold worked again without softening annealing after cold working,
In both cases, cracks have occurred in the coating layer. Also, No. 12
The product is still hot worked and not cold worked, resulting in distortion and poor dimensional accuracy of the product.
【００２０】これに対して本発明に従って製造した例Ｎ
ｏ．１〜７の各材料は寸法精度が良く、曲げ試験特性に
優れており、超音波探傷試験でも非接合部などの欠陥は
全く検出されなかった。また、冷間加工後の断面のミク
ロ観察結果から、被覆層には気孔は全くなく、かつ均一
で良好な接合界面が得られていることが確かめられた。In contrast, Example N prepared according to the invention
o. Each of the materials Nos. 1 to 7 had good dimensional accuracy and excellent bending test characteristics, and no defects such as non-bonded parts were detected even in the ultrasonic flaw detection test. Further, from the results of microscopic observation of the cross section after cold working, it was confirmed that there were no pores in the coating layer and that a uniform and good bonding interface was obtained.
【００２１】[0021]
【表１】[Table 1]
【００２２】[0022]
【表２】[Table 2]
【００２３】[0023]
【表３】[Table 3]
【００２４】[0024]
【発明の効果】以上述べたように本発明によれば優れた
特性を有する寸法精度の良い表面被覆金属の製造が可能
であり、産業の発展に貢献するところは極めて大である
。As described above, according to the present invention, it is possible to manufacture a surface-coated metal with excellent properties and good dimensional accuracy, and it greatly contributes to the development of industry.
【図１】金属素材の表面に他種金属の被覆層を形成する
ための熱間静水圧プレスにおける充填要領を示す図であ
る。FIG. 1 is a diagram showing a filling procedure in hot isostatic pressing for forming a coating layer of another metal on the surface of a metal material.
【図２】本発明方法に従う加工素材の積層要領の一例を
示す断面図である。FIG. 2 is a cross-sectional view showing an example of how processed materials are laminated according to the method of the present invention.
【図３】本発明方法に従う加工素材の積層要領の他の例
を示す断面図である。FIG. 3 is a sectional view showing another example of how to stack processed materials according to the method of the present invention.
【図４】本発明方法に従う加工素材の積層要領の他の例
を示す断面図である。FIG. 4 is a sectional view showing another example of how to stack processed materials according to the method of the present invention.
【図５】本発明方法に従う加工素材の積層要領のさらに
他の例を示す断面図である。FIG. 5 is a sectional view showing still another example of how to stack processed materials according to the method of the present invention.
１ 金属素材
２ 他種金属粉末
３ カプセル
４ 中空ビレット
５ 被覆層
６ スラブ。1 Metal material
2 Other metal powder 3 Capsule
4 Hollow billet 5 Covering layer
6 Slab.
Claims (2)
該他種金属の固相線温度以下でガス圧を負荷する熱間静
水圧プレスによって被覆層として形成せしめた後に熱間
加工を施して延伸する表面被覆金属の製造方法において
、前記熱間加工後軟化焼鈍をしたのち冷間加工を施して
延伸することを特徴とする表面被覆金属の製造方法。Claim 1: A coating layer is formed on the surface of a metal material by hot isostatic pressing in which powder of another metal is applied with gas pressure at a temperature below the solidus temperature of the other metal, and then hot working is performed. 1. A method for producing a surface-coated metal, which comprises performing a softening annealing after the hot working and then subjecting it to cold working and stretching.
鈍をしたのち冷間加工を施すことを２回以上繰り返すこ
とを特徴とする請求項１記載の表面被覆金属の製造方法
。2. The method for producing a surface-coated metal according to claim 1, wherein the process of cold working, softening annealing, and cold working is repeated two or more times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9513691A JPH04365817A (en) | 1991-04-25 | 1991-04-25 | Production of surface coated metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9513691A JPH04365817A (en) | 1991-04-25 | 1991-04-25 | Production of surface coated metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04365817A true JPH04365817A (en) | 1992-12-17 |
Family
ID=14129402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9513691A Withdrawn JPH04365817A (en) | 1991-04-25 | 1991-04-25 | Production of surface coated metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04365817A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015058456A (en) * | 2013-09-19 | 2015-03-30 | 東京瓦斯株式会社 | Metallic member and metallic member manufacturing method |
| CN113046664A (en) * | 2021-02-08 | 2021-06-29 | 中航上大高温合金材料股份有限公司 | Smelting method of C-276 hastelloy |
-
1991
- 1991-04-25 JP JP9513691A patent/JPH04365817A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015058456A (en) * | 2013-09-19 | 2015-03-30 | 東京瓦斯株式会社 | Metallic member and metallic member manufacturing method |
| CN113046664A (en) * | 2021-02-08 | 2021-06-29 | 中航上大高温合金材料股份有限公司 | Smelting method of C-276 hastelloy |
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