JP2614210B2 - Cu alloy for continuous casting mold - Google Patents
Cu alloy for continuous casting moldInfo
- Publication number
- JP2614210B2 JP2614210B2 JP61024538A JP2453886A JP2614210B2 JP 2614210 B2 JP2614210 B2 JP 2614210B2 JP 61024538 A JP61024538 A JP 61024538A JP 2453886 A JP2453886 A JP 2453886A JP 2614210 B2 JP2614210 B2 JP 2614210B2
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- continuous casting
- casting mold
- temperature
- resistance
- 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.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/059—Mould materials or platings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、通常の無底式連続鋳造鋳型や、アモルフ
ァス合金薄帯製造用冷却ロールのような、特に、溶湯と
直接接触するロール鋳型などとして用いるのに適した連
続鋳造鋳型用Cu合金に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a normal bottomless continuous casting mold and a cooling mold for producing an amorphous alloy ribbon, particularly a roll mold which is in direct contact with a molten metal. The present invention relates to a Cu alloy for a continuous casting mold suitable for use as a mold.
従来、一般に、上記の無底式連続鋳造鋳型や、アモル
ファス合金薄帯製造用冷却ロール鋳型の製造には、純銅
や、Ag:0.1％（重量％、以下％の表示は、重量％を意味
する）含有の低合金銅、さらにSn:0.1％含有の低合金銅
などが使用されているが、これらの鋳型では、使用開始
後早期に、熱疲労による割れや熱軟化による変形が発生
し、耐摩耗性にも劣るので使用寿命が短かいものであっ
た。Conventionally, in general, in the production of the above-mentioned bottomless continuous casting mold or a cooling roll mold for producing an amorphous alloy ribbon, pure copper or Ag: 0.1% (% by weight, hereinafter,% means% by weight) )) And low alloyed copper containing Sn: 0.1% are used. However, in these molds, cracks due to thermal fatigue and deformation due to thermal softening occur soon after starting use, The service life was short due to poor abrasion.
そこで、近年、これらの連続鋳造鋳型の製造に、高い
熱疲労強度および降伏点を有し、かつ耐熱疲労割れ性や
耐熱変形性にすぐれた析出硬化型Cu合金、例えば、Cr:
0.1〜2.5％含有のCr合金銅や、Cr:0.1〜2.5％およびZr:
0.01〜１％含有のCr−Zr合金銅などが多く実用に供さ
れ、この析出硬化型Cu合金の使用によって使用寿命のか
なりの延命化が可能になっている。Therefore, in recent years, in the production of these continuous casting molds, having a high thermal fatigue strength and yield point, and a precipitation hardening type Cu alloy excellent in thermal fatigue cracking resistance and thermal deformation resistance, for example, Cr:
0.1 to 2.5% Cr alloy copper, Cr: 0.1 to 2.5% and Zr:
Many 0.01 to 1% Cr-Zr alloy copper and the like are put to practical use, and the use of this precipitation hardening type Cu alloy makes it possible to considerably extend the service life.
しかし、上記従来の析出硬化型Cu合金で製造された連
続鋳造型においても、高温強度および耐摩耗性が十分で
なく、必ずしも満足すべき使用寿命を示さないのが現状
である。However, even in the continuous casting mold manufactured from the above-mentioned conventional precipitation hardening type Cu alloy, the high temperature strength and wear resistance are not sufficient, and the present service life is not always satisfactory.
そこで、本発明者らは、上述のような観点から、すぐ
れた高温強度および耐摩耗性を具備し、かつ熱伝導性、
耐熱疲労割れ性、および耐熱変形性にもすぐれた連続鋳
造型用材料を開発すべく研究を行った結果、 Cr:0.1〜1.5％、Zr:0.01〜１％、 Li:0.001〜0.2％、 を含有し、さらに、 C:5〜60ppm、 を含有し、残りがCuと不可避不純物からなり、かつ不可
避不純物としての酸素含有量を50ppm以下とした組成を
有するCu合金は、上記の従来連続鋳造鋳型用Cr−Zr低合
金銅と比較して熱伝導性や耐熱疲労割れ性、さらに耐熱
変形性に遜色なく、特に高温強度、常温強度、および耐
摩耗性の著しくすぐれたものであり、連続鋳造鋳型とし
て用いた場合にすぐれた性能を長期に亘って発揮すると
いう研究結果を得たのである。Therefore, the present inventors have excellent high-temperature strength and abrasion resistance from the above-described viewpoint, and have thermal conductivity,
As a result of conducting research to develop a material for continuous casting molds that has excellent heat fatigue crack resistance and heat deformation resistance, Cr: 0.1-1.5%, Zr: 0.01-1%, Li: 0.001-0.2% In addition, C: 5 ~ 60ppm, containing, the remainder is composed of Cu and unavoidable impurities, and a Cu alloy having a composition with an oxygen content as unavoidable impurities of 50ppm or less, the conventional continuous casting mold described above Compared to Cr-Zr low alloy copper for copper, it has the same thermal conductivity, thermal fatigue cracking resistance, and thermal deformation resistance, and it is particularly excellent in high-temperature strength, room-temperature strength, and abrasion resistance. The research results show that when used as a material, excellent performance is exhibited over a long period of time.
この発明は、上記の研究結果にもとづいてなされたも
のであって、 Cr:0.1〜1.5％、Zr:0.01〜１％、 Li:0.001〜0.2％、 を含有し、さらに、 C:5〜60ppm、 を含有し、残りがCuと不可避不純物からなり、かつ不可
避不純物としての酸素含有量が50ppm以下である組成、
並びにすぐれた高温強度、常温強度および耐摩耗性を有
し、さらにすぐれた熱伝導性、耐熱疲労割れ性、および
耐熱変形性を具備した連続鋳造鋳型用Cu合金に特徴を有
するものである。The present invention has been made based on the above research results, and contains: Cr: 0.1 to 1.5%, Zr: 0.01 to 1%, Li: 0.001 to 0.2%, and C: 5 to 60 ppm A composition comprising Cu and inevitable impurities, and having an oxygen content of 50 ppm or less as inevitable impurities,
The present invention is also characterized by a Cu alloy for continuous casting molds having excellent high-temperature strength, normal-temperature strength, and wear resistance, and further excellent heat conductivity, thermal fatigue crack resistance, and thermal deformation resistance.
つぎに、この発明のCu合金において、成分組成範囲を
上記の通りに限定した理由を説明する。Next, the reason why the composition range of the Cu alloy according to the present invention is limited as described above will be described.
（ａ） Cr Crには、溶融金属に対する侵食の防止、高温強度の向
上、耐熱疲労割れ性、耐結晶粒粗大化割れ性および耐摩
耗性を改善する作用があるが、その含有量が0.1％未満
では前記作用に所望の効果が得られず、一方、1.5％を
越えると熱伝導性に低下傾向が現われるようになること
から0.1〜1.5％とした。(A) Cr Cr has an effect of preventing erosion of molten metal, improving high-temperature strength, improving thermal fatigue crack resistance, crystal grain coarsening crack resistance, and wear resistance. Its content is 0.1%. If it is less than 1.5%, the desired effect cannot be obtained. On the other hand, if it exceeds 1.5%, the thermal conductivity tends to decrease.
（ｂ） Zr Zrには、合金の高温延性、特に200〜600℃の温度範囲
における延性を改善すると共に、高温強度、耐疲労割れ
性を向上させる作用があるが、0.01％未満では前記作用
に所望の効果が得られず、１％を越えて含有させてもよ
り一層の改善効果が現われず、逆に溶解が困難になるこ
とから0.01％〜１％と定めた。(B) Zr Zr has the effect of improving the high-temperature ductility of the alloy, particularly the ductility in the temperature range of 200 to 600 ° C., and at the same time, improving the high-temperature strength and fatigue crack resistance. The desired effect is not obtained, and even if the content exceeds 1%, no further improving effect is exhibited, and conversely, dissolution becomes difficult, so that the content is set to 0.01% to 1%.
（ｃ） Ｃおよび酸素（Ｏ） Ｃは、炭化物を形成し、結晶粒および析出物の微細化
に寄与し、高温強度、常温強度および耐摩耗性を向上さ
せる作用があるが、その含有量が5ppm未満では前記作用
に所望の効果を確保することができないばかりでなく、
酸素を50ppm以下に押えることができず、介在物発生の
原因となり、一方、60ppmを越えると脆化し易くなるか
ら、５〜60ppmと定めた。(C) C and oxygen (O) C forms carbides, contributes to refinement of crystal grains and precipitates, and has an effect of improving high-temperature strength, room-temperature strength, and wear resistance. If it is less than 5 ppm, not only the desired effect cannot be ensured for the above-mentioned action, but also
Oxygen cannot be suppressed to 50 ppm or less, causing inclusions. On the other hand, if it exceeds 60 ppm, embrittlement is liable to occur.
一方、酸素が50ppmを越えるとＣが5ppm未満となって
しまい、Ｃを含有させることが困難となることから、不
可避不純物としての酸素の上限値を50ppmと定めた。On the other hand, if oxygen exceeds 50 ppm, C becomes less than 5 ppm and it becomes difficult to contain C. Therefore, the upper limit of oxygen as an unavoidable impurity is set to 50 ppm.
（ｄ） Li Liには、脱酸作用があるほか、結晶粒を微細化し、も
って、合金の強度を改善する作用があるが、その含有量
が0.001％未満では前記作用に所望の効果が得られず、
0.2％を越えて含有させる熱伝導性が低下するようにな
ることから、0.001〜0.2％と定めた。(D) Li Li has a deoxidizing effect and an effect of refining the crystal grains and thereby improving the strength of the alloy. However, if the content is less than 0.001%, a desired effect can be obtained in the above effect. I ca n’t
Since the thermal conductivity to be contained in excess of 0.2% decreases, the content is set to 0.001 to 0.2%.
つぎに、この発明のCu合金を実施例により具体的に説
明する。Next, the Cu alloy of the present invention will be specifically described with reference to examples.
通常の低周波溝型誘導炉を用い、純銅を黒鉛板でおお
うとともに、Ar雰囲気 中で溶解し、溶落後、溶湯温度が1200〜1400℃の範囲内
の所定の温度に上昇した時点でArガスを吹込んで溶湯の
脱ガス撹拌を行ない、ついで、この状態で、撹拌中に合
金成分を添加して第１表に示される成分含有溶湯に調整
し、ついで、最終的に一酸化炭素ガスを吹込んで第１表
に示される通りの酸素含有量およびＣ含有量に調整し、
ついで、Ar雰囲気にて水冷鋳型を用いて鋳塊に鋳造した
後、前記鋳塊を面削し、引続いて熱間圧延にて板厚:20m
mの熱延板とし、900〜1050℃の範囲内の所定の温度で溶
体化処理し、420〜550℃の範囲内の所定の温度で２時間
保持の時効処理を行なうことによって板状の本発明Cu合
金１〜９および従来Cu合金1,2をそれぞれ製造した。Using a normal low-frequency grooved induction furnace, cover pure copper with a graphite plate and When the molten metal temperature rises to a predetermined temperature in the range of 1200 to 1400 ° C. after the melt-down, Ar gas is blown in to perform degassing and stirring of the molten metal. The components were added to adjust the component-containing molten metal shown in Table 1, and then carbon monoxide gas was finally blown to adjust the oxygen content and the C content as shown in Table 1,
Then, after casting into an ingot using a water-cooled mold in an Ar atmosphere, the ingot was face-cut, followed by hot rolling with a thickness of 20 m.
m hot-rolled sheet, subjected to solution treatment at a predetermined temperature in the range of 900 to 1050 ° C, and subjected to aging treatment for 2 hours at a predetermined temperature in the range of 420 to 550 ° C to obtain a plate-shaped book. Inventive Cu alloys 1 to 9 and conventional Cu alloys 1 and 2 were produced, respectively.
この結果得られた本発明Cu合金１〜９および従来Cu合
金1,2について、電気伝導度を測定すると共に常温引張
試験、温度:520℃における高温引張試験、および大越式
摩耗試験を行った。なお、大越式摩耗試験は、水平に設
置した試験片に対して、上方より直径:30mm×幅:3mm寸
法をもったCr−Mo鋼製リングを、押付力:1kg、回転速
度:4r.p.m.9の条件でおしつけ、７分経過後の試験片の
摩耗量を測定することにより行なった。With respect to the Cu alloys 1 to 9 of the present invention and the conventional Cu alloys 1 and 2 obtained as a result, the electrical conductivity was measured, and a normal-temperature tensile test, a high-temperature tensile test at 520 ° C., and an Ogoshi-type wear test were performed. In addition, the Ogoshi abrasion test was performed on a horizontally placed test specimen with a Cr-Mo steel ring having a size of 30 mm in diameter x 3 mm in width from above, pressing force: 1 kg, rotation speed: 4 r.pm9 And the abrasion of the test piece after 7 minutes was measured.
これらの測定結果を第２表に示した。 Table 2 shows the measurement results.
第1,2表に示される結果から、本発明Cu合金１〜９
は、いずれも従来Cu合金1,2に比して、常温および高温
における強度が高く、かつ耐摩耗性にもすぐれているこ
とが明らかである。From the results shown in Tables 1 and 2, the Cu alloys of the present invention 1 to 9
It is evident that each of them has higher strength at room temperature and high temperature than conventional Cu alloys 1 and 2, and also has excellent wear resistance.
上述のように、この発明のCu合金は、きわめて高い常
温および高温強度を有し、かつ耐摩耗性にもすぐれ、さ
らにすぐれた熱伝導性、耐熱疲労割れ性、および耐熱編
形性を具備しているので、これらの特性が要求される連
続鋳造鋳型の製造に用いた場合に、きわめて長期に亘っ
てすぐれた性能を発揮するのである。As described above, the Cu alloy of the present invention has extremely high room temperature and high temperature strength, is excellent in abrasion resistance, and further has excellent heat conductivity, heat fatigue crack resistance, and heat knitting property. Therefore, when used in the production of a continuous casting mold requiring these characteristics, excellent performance is exhibited over an extremely long period.
Claims (1)
避不純物としての酸素含有量が50ppmである組成を有す
ることを特徴とする連続鋳造鋳型用Cu合金。(1) Cr-0.1-1.5%, Zr: 0.01-1%, Li: 0.001-0.2%, and C: 5-60ppm by weight%, the balance being Cu and A Cu alloy for a continuous casting mold, comprising a composition comprising inevitable impurities and having an oxygen content of 50 ppm as inevitable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61024538A JP2614210B2 (en) | 1986-02-06 | 1986-02-06 | Cu alloy for continuous casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61024538A JP2614210B2 (en) | 1986-02-06 | 1986-02-06 | Cu alloy for continuous casting mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62182239A JPS62182239A (en) | 1987-08-10 |
| JP2614210B2 true JP2614210B2 (en) | 1997-05-28 |
Family
ID=12140925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61024538A Expired - Lifetime JP2614210B2 (en) | 1986-02-06 | 1986-02-06 | Cu alloy for continuous casting mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2614210B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5821294A (en) * | 1996-08-30 | 1998-10-13 | National Starch And Chemical Investment Holding Corporation | Water-based laminating adhesives |
| DE10306819A1 (en) * | 2003-02-19 | 2004-09-02 | Sms Demag Ag | Copper alloy and use of such an alloy for casting molds |
| CN104846234B (en) * | 2015-05-18 | 2017-01-25 | 西峡龙成特种材料有限公司 | Cu-Zr-Ag alloy crystallizer copper plate and preparation process thereof |
| CN105088000B (en) * | 2015-09-02 | 2017-06-16 | 河南科技大学 | A kind of high-strength highly-conductive contact line rare-earth copper alloy and preparation method thereof |
| JP6736869B2 (en) | 2015-11-09 | 2020-08-05 | 三菱マテリアル株式会社 | Copper alloy material |
| CN111500891B (en) * | 2020-06-08 | 2022-12-13 | 四川华芯腾科技股份有限公司 | High-conductivity copper alloy rotor and preparation method thereof |
| CN113046594B (en) * | 2021-03-11 | 2022-03-18 | 郑州大学 | High-strength high-thermal-conductivity copper alloy material roller sleeve and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58107460A (en) * | 1981-12-21 | 1983-06-27 | Chuetsu Gokin Chuko Kk | Mold material for precipitation hardening type continuous casting |
| JPS59193233A (en) * | 1983-04-15 | 1984-11-01 | Toshiba Corp | Copper alloy |
| JPS60238432A (en) * | 1984-12-27 | 1985-11-27 | Mitsubishi Metal Corp | Cu alloy for continuous casting mold |
-
1986
- 1986-02-06 JP JP61024538A patent/JP2614210B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62182239A (en) | 1987-08-10 |
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