JPH01123052A - Ultralow thermal expansion alloy and production thereof - Google Patents
Ultralow thermal expansion alloy and production thereofInfo
- Publication number
- JPH01123052A JPH01123052A JP28069387A JP28069387A JPH01123052A JP H01123052 A JPH01123052 A JP H01123052A JP 28069387 A JP28069387 A JP 28069387A JP 28069387 A JP28069387 A JP 28069387A JP H01123052 A JPH01123052 A JP H01123052A
- Authority
- JP
- Japan
- Prior art keywords
- thermal expansion
- alloy
- less
- coefficient
- expansion 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 33
- 239000000956 alloy Substances 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 3
- 238000005482 strain hardening Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000000137 annealing Methods 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 229910052790 beryllium Inorganic materials 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000012456 homogeneous solution Substances 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 229910052720 vanadium Inorganic materials 0.000 claims 1
- 229910052726 zirconium Inorganic materials 0.000 claims 1
- 229910052759 nickel Inorganic materials 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000000203 mixture Substances 0.000 description 5
- 229910001374 Invar Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229910011212 Ti—Fe Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 229910002058 ternary alloy Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
Abstract
Description
【発明の詳細な説明】
〔発明の分野〕
本発明は機械的強度が高く、熱膨張係数が極めて小さく
、かつ負の値をもつ超然膨張合金およびその製造方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to a non-zero expansion alloy having high mechanical strength, an extremely small coefficient of thermal expansion, and a negative value, and a method for producing the same.
従来、低熱膨張係数を有する合金としてはＦｅ６３．５
’４ 、’ Ｎｉ ３６．５ ％およびＦｅ ６３．
０ ％ 、 Ｎｉ ３２．０％ 、 Ｃｏ ５．０％が
有り、一般計測機器に用いられている。しかし、これら
の合金は一１０〜＋１００℃付近の熱膨張係数が＋〇、
５ Ｘ １０ ／’Ｃでしかも機械強度が４６〜６０に
９／７０に限られている。ところが最近計測機器の部品
材料として、さらに小さな熱膨張係数ならびに負の熱膨
張係数を有すると共に機械的強度の高い合金が要求され
ろようになってきた。Conventionally, Fe63.5 is an alloy with a low coefficient of thermal expansion.
'4, 'Ni 36.5% and Fe 63.
0%, Ni 32.0%, Co 5.0%, and is used in general measuring instruments. However, these alloys have a thermal expansion coefficient of +〇 in the vicinity of -10 to +100℃.
5 x 10 /'C, and the mechanical strength is limited to 46-60, 9/70. However, recently, alloys having a smaller coefficient of thermal expansion, a negative coefficient of thermal expansion, and high mechanical strength have been required as materials for parts of measuring instruments.
本発明はＮｉ ２９．５〜３５．０係、 Ｃｏ ２．０
〜７．０係。The present invention has Ni 29.5 to 35.0 and Co 2.0.
~7.0 Section.
Ｃｒ ０．００１〜２．０ ％以下、 Ｔｉ ０．００
１〜２．０ Ｔｏ以下を含み、残部Ｆｅから成るか、あ
るいはこれを主成分とし、さらに副成分としてＮｂ９Ｍ
ｏ＋Ｗ２％以下。Cr 0.001-2.0% or less, Ti 0.00
1 to 2.0 To or less, with the balance consisting of Fe, or with this as the main component and further Nb9M as a subcomponent.
o+W2% or less.
Ｂｅ＋ Ｖ＋ Ｚｒ＋ Ｓｉ ＋ １％以下、 Ｍｎ、
Ｃｕ＋ ＡＩ 、 Ｃ，５Ｏ０５俤以下の一種あるい
は二種以上の０．００１〜２．０％から成る合金につい
て、簡易な熱処理と加工により発揮し得ることを見出し
たもので、その目的とするところはＦｅ ６３．５％、
Ｎｉ ３６．５ ｆ＆およびＦｅ６３．０ ％ 、
Ｎｉ ３２．０ ’Ａ 、 Ｃｏ ５．０％の合金より
も機械的強度が高く、シかも熱膨張係数が一５０°〜＋
１００℃の広い温度範囲において、はぼ−２，０〜＋０
．５Ｘ１０＝／℃と非常に小さく、超然膨張合金として
用途に充分適合する新規な材料を提供することにある。Be+ V+ Zr+ Si + 1% or less, Mn,
It was discovered that an alloy consisting of 0.001 to 2.0% of one or more of Cu + AI, C, 5O05 or less can be exhibited by simple heat treatment and processing, and the purpose is to Fe 63.5%,
Ni 36.5 f& and Fe63.0%,
It has higher mechanical strength than Ni 32.0'A, Co 5.0% alloy, and its thermal expansion coefficient is 150° to +
In a wide temperature range of 100℃, the temperature is -2.0 to +0
．． The object of the present invention is to provide a new material that has a very small expansion of 5×10=/°C and is fully suitable for use as a super-zero expansion alloy.
上述の簡易な熱処理と加工の方法は次の通りである。 The above-mentioned simple heat treatment and processing method is as follows.
（Ａ）溶体化処理のため６００℃以上融点以下の温度で
１分間以上（例えば５分乃至１００時間）加熱後、焼入
れすれるかあるいは毎秒１℃以下の速度で徐冷して焼鈍
を行う。(A) After heating for solution treatment at a temperature of 600° C. or higher and lower than the melting point for 1 minute or more (for example, 5 minutes to 100 hours), it is quenched or annealed by slow cooling at a rate of 1° C. per second or lower.
ＣＢ）上記焼入れ後あるいは焼鈍後加工率１０％以上の
冷間加工を行い、さらに５０Ｃ以上６ｏｏ℃以下の温度
で１分間以上（例えば５分乃至１００時間）加熱し、つ
いて毎秒１℃以下の速度で徐冷する。CB) After the above-mentioned quenching or annealing, perform cold working at a processing rate of 10% or more, and further heat at a temperature of 50C or more and 6oooC or less for 1 minute or more (for example, 5 minutes to 100 hours), at a rate of 1 °C per second or less. Cool slowly.
およびＦｅのみかあるいはこれを主成分としてさらに副
成分を加え、空気中もしくは不活性ガス中または真空中
において１通常の溶解炉によって溶解した後、 Ｍｎ
！ Ｓｉ ＋ Ｔｉ＋ ＡＩ ＋ Ｃａなど少量０．Ｓ
Ｓ以下添加して有害な不純物を徐き充分に攪拌して組成
的に均一な溶融合金を造る。つぎにこれを鋳型に注入し
て鋳塊を造り、６００℃以上融点以下の温度で１分間以
上（例えば５分乃至１００時間）加熱保持した後、焼入
れするかあるいは毎秒１℃以下の速度で徐冷する。さら
にこれを常温あるいは常温以上融点以下の温度において
鍛造、圧延、引抜きあるいはスェージして用途に適合す
る形状に成形する。つぎにこれを５０℃以上６ｏｏ℃以
下の温度で１分間以上（例えば５分乃至１００時間）加
熱し。Mn is melted in air, inert gas, or vacuum in a normal melting furnace.
! Small amount of Si + Ti + AI + Ca etc. 0. S
S or less is added to remove harmful impurities and thoroughly stirred to produce a compositionally uniform molten alloy. Next, this is injected into a mold to make an ingot, heated and held at a temperature of 600°C or higher and lower than the melting point for 1 minute or more (for example, 5 minutes to 100 hours), and then quenched or slowed at a rate of 1°C per second or lower. Cool down. Further, this is forged, rolled, drawn or swaged at room temperature or at a temperature above room temperature and below the melting point to form it into a shape suitable for the intended use. Next, this is heated at a temperature of 50° C. or higher and 60° C. or lower for 1 minute or more (for example, 5 minutes to 100 hours).
ついて毎秒１℃以下の速度で徐冷して製品とする。The product is then slowly cooled at a rate of 1°C per second or less.
つぎに本発明の実施例について述べる。Next, embodiments of the present invention will be described.
第１表に示す合金成分の全量（約ＩＫｆ）をアルミナ坩
堝中で、 Ａｒガスを通じながら高周波誘導電気炉によ
り溶解した後、溶湯なよく攪拌し、鉄型に鋳込んで、３
５朋Ｘ３５ｍ１）１にの角型鋳塊を得た。つぎにその一
部を鍛造によって約１０顛の丸棒にし。The entire amount of the alloy components shown in Table 1 (approximately IKf) was melted in an alumina crucible in a high-frequency induction electric furnace while passing Ar gas, the molten metal was thoroughly stirred, and cast into an iron mold.
A square ingot measuring 5 mm x 35 m1 was obtained. Next, part of it is forged into a round bar of about 10 pieces.
１０００℃で１時間加熱後１００℃／時間の速度で冷却
した。それを常温で種々の加工率を施して、丸棒にし、
それから長さ１０ｃｒＩＬの丸棒２本を切りとり１本を
冷間加工状態、他方を１００℃、２００℃、４００℃、
６００℃、８００℃および１０００℃で１時間加熱した
後１００℃／時間の速度で冷却して測定に供した。After heating at 1000°C for 1 hour, it was cooled at a rate of 100°C/hour. It is processed into a round bar by various processing rates at room temperature,
Then, two round bars with a length of 10crIL were cut out, one in a cold worked condition, and the other at 100℃, 200℃, and 400℃.
After heating at 600°C, 800°C and 1000°C for 1 hour, the mixture was cooled at a rate of 100°C/hour and subjected to measurement.
る
常温および高温にお饋誠膨張係数は縦型と横型膨張計に
より測定した。The expansion coefficients at room temperature and high temperature were measured using vertical and horizontal dilatometers.
第１表には代表的なインバ合金（Ｆｅ ６３．０ ％
。Table 1 shows typical Invar alloys (Fe 63.0%
.
Ｎｉ ３２．０％、 Ｃｏ ５．０％）と本発明合金の
測定値が比較して示しである。この表から明らかな如く
。The measured values for the alloy of the present invention (Ni: 32.0%, Co: 5.0%) are shown in comparison. As is clear from this table.
本発明合金はいずれも従来のインバー合金に比較ンバー
合金と本発明の代表的な合金について、それぞれ冷間加
工率と再加熱した後、徐冷した状態における一５０°〜
＋１００℃の熱膨張係数ならび熱膨張曲線が示しである
。図から見られるように本発明合金の熱膨張係数は適当
な加工率と熱処理を調整することに−２，０〜＋〇、５
Ｘ １０ の非常に小さな値が得られることがわか
る。従って本発明合金は常温および高温において使用す
る一般測定器。All of the present invention alloys are compared with conventional Invar alloys.For Invar alloys and representative alloys of the present invention, the cold working rate and the temperature range from 150° to 150° after being reheated and slowly cooled.
The coefficient of thermal expansion at +100° C. and the thermal expansion curve are shown. As can be seen from the figure, the coefficient of thermal expansion of the alloy of the present invention ranges from -2,0 to +〇,5 by adjusting the appropriate processing rate and heat treatment.
It can be seen that a very small value of X 10 is obtained. Therefore, the alloy of the present invention is suitable for general measuring instruments used at room temperature and high temperature.
標準尺および精密機器の材料として非常に好適である。Very suitable as a material for standard measures and precision instruments.
最後に本発明合金の組成を限定した理由についてのべる
。まずＮｉ−Ｃｏ−Ｃｒ−Ｔｉ −Ｆｅ 三元合金にお
いて組成なＮｉ ２９．５〜３５Ｊ） ％ 、 Ｃｏ
２．０〜７．０％ 、 Ｃｒ ０．００１〜２．０ ％
以下、 Ｔｉ ０．００１〜２．０％以下、残部Ｆｅと
限定したのはその組成範囲以外では熱膨張係数が本発明
の目的とする−２．０〜＋０．５×１０ の範囲をこ
えるからである。Ｃｒは耐食性および機械的強度の改善
元素であり、またＴｉはＮｉとの金属間化合物を形成さ
せ１強度を上昇させるに有用な元素である。Finally, the reason for limiting the composition of the alloy of the present invention will be discussed. First, in the Ni-Co-Cr-Ti-Fe ternary alloy, the composition is Ni29.5~35J)%, Co
2.0-7.0%, Cr 0.001-2.0%
Hereinafter, the reason why Ti is limited to 0.001 to 2.0% or less and the balance is Fe is because outside of this composition range, the coefficient of thermal expansion exceeds the range of -2.0 to +0.5 x 10 which is the objective of the present invention. It is. Cr is an element for improving corrosion resistance and mechanical strength, and Ti is an element useful for forming an intermetallic compound with Ni to increase strength.
つぎに副成分なＮｂ、 Ｍｏ、 Ｗ ２ ’４以下＋
Ｂｅ＋ ｖ’＋Ｚｒ ｌ ｓｉ １％以下、 Ｍｎ＋
Ｃｕ＋ ＡＩ ＋ Ｃｒ Ｓ ０．５％以下の一種ある
いは二種以上の全ｉｏ、００１〜２．０チと限定したの
は、これらの組成範囲以外では熱膨張係数が本発明の目
的とする−２．０〜＋〇、５ Ｘ １０ の範囲をこ
えるからである。Ｎｂ ＋ Ｍｏ ＋ Ｗｔ Ｖ＋添加
については機械的強度と耐食性の改善元素とし、またＢ
ｅ ｌ Ｚｒ Ｉ Ｃｕ ｌ Ａｔ Ｉ ＣＩ Ｓにつ
いては機械的強度の改善元素とした。Ｍｎ ＋ Ｓｔは
溶解時における脱酸剤として有効に寄与する。Ｎｉ＋Ｃ
ｏ＋Ｆｅ元素は熱膨張係数を左右する最も重要な元素で
ある。Next, the subcomponents Nb, Mo, W 2 '4 or less +
Be+ v'+Zr l si 1% or less, Mn+
Cu + AI + Cr S 0.5% or less of one or more types of total IO is limited to 001 to 2.0% because outside these composition ranges, the thermal expansion coefficient is -2, which is the objective of the present invention. This is because it exceeds the range of .0 to +〇, 5 x 10. Nb + Mo + Wt V+ addition is an element that improves mechanical strength and corrosion resistance, and B
e l Zr I Cu l At I CI S was considered as an element for improving mechanical strength. Mn + St effectively contributes as a deoxidizing agent during dissolution. Ni+C
The o+Fe element is the most important element that influences the coefficient of thermal expansion.
第１図は本発明の代表的な合金の熱膨張係数と冷間加工
率との関係を示したグラフである。
第２図は本発明の代表的な合金の８０チ冷間加工後時効
温度との関係を示したグラフである。
？５３図は本発明の代表的な合金の４００℃で時効した
状態の熱膨張曲線と従来のインバー合金と比較したり゛
ラフである。
特許出願人 財団法人電気磁気材料研究所代 理 人
弁理士玉蟲久五部（外２名）第 １ 図
Ｐ
ｘ＋ｏ−’
温 度 〔０ｃ〕FIG. 1 is a graph showing the relationship between the coefficient of thermal expansion and the cold working rate of typical alloys of the present invention. FIG. 2 is a graph showing the relationship between aging temperature after 80 inch cold working of a representative alloy of the present invention. ? Figure 53 shows a rough comparison between the thermal expansion curve of a typical alloy of the present invention aged at 400°C and that of a conventional Invar alloy. Patent applicant Agent: Institute for Electrical and Magnetic Materials Foundation
Patent attorney Gobe Tamamushi (2 others) Figure 1 P x+o-' Temperature [0c]
Claims (3)
７．０％の範囲において、Ｃｒ０．００１〜２．０％以
下、Ｔｉ０．００１〜２．０％以下を含み残部は実質的
にはＦｅから成り、熱膨張係数が−２．０×１０＾−＾
６〜＋０．５×１０＾−＾６の範囲であることを特徴と
する超低熱膨張合金。(1) Ni29.5-35%, Co2.0-35% by weight
In the range of 7.0%, Cr is 0.001 to 2.0% or less, Ti is 0.001 to 2.0% or less, and the remainder is substantially Fe, with a coefficient of thermal expansion of -2.0 x 10^ −＾
An ultra-low thermal expansion alloy characterized in that the thermal expansion is in the range of 6 to +0.5×10^-^6.
０％、Ｃｏ２．０〜７．０％、Ｃｒ０．００１〜２．０
％、Ｔｉ０．００１〜２．０％および残部Ｆｅからなる
合金に、副成分としてＮｂ、Ｍｏ、Ｗ２％以下、Ｂｅ、
Ｖ、Ｚｒ、Ｓｉ１％以下、Ｍｎ、Ｃｕ、Ａｌ、Ｃ、Ｓ０
．５％以下のうち少くとも一種または二種以上の全量０
．００１〜２．０％を含有してなり、熱膨張係数が−２
．０〜＋０．５×１０＾−＾６であることを特徴とする
超低熱膨張合金。(2) Ni29.5 to 35.
0%, Co2.0-7.0%, Cr0.001-2.0
%, Ti 0.001 to 2.0% and the balance Fe, as subcomponents Nb, Mo, W 2% or less, Be,
V, Zr, Si 1% or less, Mn, Cu, Al, C, S0
．． Total amount of at least one or more of 5% or less 0
．． 001 to 2.0%, and the coefficient of thermal expansion is -2
．． An ultra-low thermal expansion alloy characterized by having a thermal expansion coefficient of 0 to +0.5×10^-^6.
低熱膨張合金において、 （Ａ）６００℃以上融点以下の高温で１分間以上加熱し
て均質溶体化処理をした後、焼入れするか或いは毎秒１
℃以下の速度で徐冷して焼鈍を行い、（Ｂ）上記焼入れ
後あるいは焼鈍後、１０％以上の冷間加工を行い、 （Ｃ）上記冷間加工後、５０℃以上６００℃以下の温度
で１分間以上１００時間以下加熱しついて毎秒１℃以下
の速度で徐冷することにより熱膨張係数が−２．０〜＋
０．５×１０＾−＾６の範囲であることを特徴とする超
低熱膨張合金の製造方法。(3) In the ultra-low thermal expansion alloy according to claim 1 or 2, (A) after performing homogeneous solution treatment by heating at a high temperature of 600°C or higher and lower than the melting point for 1 minute or more, quenching is performed. or 1 per second
(B) After the above-mentioned quenching or annealing, cold working is performed by 10% or more; (C) After the above-mentioned cold working, the temperature is 50°C or more and 600°C or less. The coefficient of thermal expansion is -2.0 to +
A method for producing an ultra-low thermal expansion alloy, characterized in that the thermal expansion is in the range of 0.5×10^-^6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62280693A JP2796966B2 (en) | 1987-11-06 | 1987-11-06 | Ultra-low thermal expansion alloy and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62280693A JP2796966B2 (en) | 1987-11-06 | 1987-11-06 | Ultra-low thermal expansion alloy and manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01123052A true JPH01123052A (en) | 1989-05-16 |
| JP2796966B2 JP2796966B2 (en) | 1998-09-10 |
Family
ID=17628628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62280693A Expired - Fee Related JP2796966B2 (en) | 1987-11-06 | 1987-11-06 | Ultra-low thermal expansion alloy and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2796966B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4910945A (en) * | 1987-04-17 | 1990-03-27 | Strapack Corporation | Band feeding and tightening apparatus for strapping machine |
| WO1994029057A1 (en) * | 1993-06-09 | 1994-12-22 | Charles Hauser | Device for sawing a hard or fragile material |
| WO1998041665A1 (en) * | 1997-03-18 | 1998-09-24 | Sumitomo Special Metals Co., Ltd. | Low heat expansion alloy |
| JP2011162820A (en) * | 2010-02-08 | 2011-08-25 | Res Inst Electric Magnetic Alloys | High-strength low-thermal-expansion alloy, method for producing the same, and precision instrument |
| KR102030834B1 (en) * | 2019-05-20 | 2019-10-10 | 국방과학연구소 | Heat treatment of Fe-Ni-Co ternary alloy and Fe-Ni-Co ternary alloy using the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49105713A (en) * | 1973-01-29 | 1974-10-07 | ||
| JPS5541928A (en) * | 1978-09-16 | 1980-03-25 | Kobe Steel Ltd | High strength steel of low thermal expansibility |
| JPS5741350A (en) * | 1980-08-25 | 1982-03-08 | Furukawa Electric Co Ltd:The | Alloy with high strength, high ductility and low thermal expansibility and its manufacture |
-
1987
- 1987-11-06 JP JP62280693A patent/JP2796966B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49105713A (en) * | 1973-01-29 | 1974-10-07 | ||
| JPS5541928A (en) * | 1978-09-16 | 1980-03-25 | Kobe Steel Ltd | High strength steel of low thermal expansibility |
| JPS5741350A (en) * | 1980-08-25 | 1982-03-08 | Furukawa Electric Co Ltd:The | Alloy with high strength, high ductility and low thermal expansibility and its manufacture |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4910945A (en) * | 1987-04-17 | 1990-03-27 | Strapack Corporation | Band feeding and tightening apparatus for strapping machine |
| WO1994029057A1 (en) * | 1993-06-09 | 1994-12-22 | Charles Hauser | Device for sawing a hard or fragile material |
| WO1998041665A1 (en) * | 1997-03-18 | 1998-09-24 | Sumitomo Special Metals Co., Ltd. | Low heat expansion alloy |
| US6123898A (en) * | 1997-03-18 | 2000-09-26 | Sumitomo Special Metals Co., Ltd. | Low heat expansion alloy |
| CN1075564C (en) * | 1997-03-18 | 2001-11-28 | 住友特殊金属株式会社 | Low heat expansion alloy |
| JP2011162820A (en) * | 2010-02-08 | 2011-08-25 | Res Inst Electric Magnetic Alloys | High-strength low-thermal-expansion alloy, method for producing the same, and precision instrument |
| KR102030834B1 (en) * | 2019-05-20 | 2019-10-10 | 국방과학연구소 | Heat treatment of Fe-Ni-Co ternary alloy and Fe-Ni-Co ternary alloy using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2796966B2 (en) | 1998-09-10 |
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