JPH0324253A - Production of ni-ti superelastic alloy wire - Google Patents
Production of ni-ti superelastic alloy wireInfo
- Publication number
- JPH0324253A JPH0324253A JP15657789A JP15657789A JPH0324253A JP H0324253 A JPH0324253 A JP H0324253A JP 15657789 A JP15657789 A JP 15657789A JP 15657789 A JP15657789 A JP 15657789A JP H0324253 A JPH0324253 A JP H0324253A
- Authority
- JP
- Japan
- Prior art keywords
- alloy wire
- superelastic alloy
- wire
- superelastic
- tension
- 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.)
- Pending
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 25
- 239000000956 alloy Substances 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910001000 nickel titanium Inorganic materials 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000005482 strain hardening Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 abstract description 16
- 229910052802 copper Inorganic materials 0.000 abstract description 3
- 229910052759 nickel Inorganic materials 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Wire Processing (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は発生力が大きいＮ ｉ −Ｔ ｉ系超弾性合金
線材の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for producing a N i -T i superelastic alloy wire that generates a large force.
〔従来の技術及び発四が解決しようとする課題〕従来Ｎ
ｉ −Ｔ ｉ系超弾性合金線材としては、Ｎ ｉ ５
１！１％，残部Ｔｉ又はそのＮｉとＴｉの一部をＦｅ，
Ｃｒ，Ｃｏ，Ｃｕの何れかｌ種以止で置換したものが用
いられ、通常所定の冷間加工を施した仲線上りの線材を
４００℃以上の温度で数秒から１時間程度の加熱処理を
施して造られている。加熱処理は、所定の冷間加工率を
加えた伸線上りのＮｉ−Ｔｉ系超弾性合金線材を４００
℃以上の加熱炉内に所定の速度で走行通過させて行なっ
ている。[Conventional technology and problems that Hatsushi attempts to solve] Conventional N
As the i-Ti superelastic alloy wire, N i 5
1!1%, the remainder Ti or part of the Ni and Ti is Fe,
A wire rod substituted with one or more of Cr, Co, and Cu is used, and the wire rod that has been subjected to a specified cold working is usually heat-treated at a temperature of 400°C or higher for a few seconds to an hour. It is made with care. In the heat treatment, the drawn Ni-Ti superelastic alloy wire that has been subjected to a predetermined cold working rate is
The material is passed through a heating furnace at a temperature of .degree. C. or higher at a predetermined speed.
しかしながら上記製造方法で造られたＮｉ−Ｔｉ系超弾
性合金線材は発生力が低く、ユーザから線径を規定され
た際に、必要な発生荷重を満足できない恐れがあった。However, the Ni-Ti superelastic alloy wire manufactured by the above manufacturing method has a low generated force, and there is a possibility that the required generated load cannot be satisfied when the wire diameter is specified by the user.
即ち上記製造方法で造られた線径０．４５ｍ＋ｉのＮ
ｉ −Ｔ ｉ系超弾性合金線材のステージ部における発
生応力は第３図に示すように負荷時に４６〜５３ｋｇｌ
／ａｍ．除荷時に歪が２〜８％で１７〜２５ｋｇｌ／ｓ
ｉである。That is, N having a wire diameter of 0.45 m+i manufactured by the above manufacturing method
The stress generated in the stage part of the i-Ti superelastic alloy wire is 46 to 53 kgl when loaded, as shown in Figure 3.
/am. 17-25 kgl/s with strain of 2-8% during unloading
It is i.
本発明はこれに鑑み、種々検討の結果、高発生力を有す
るＮｉ−Ｔｉ系超弾性合金線材の製造方法を開発したも
のである。In view of this, and as a result of various studies, the present invention has developed a method for manufacturing a Ni-Ti based superelastic alloy wire having a high generated force.
即ち本発明は、冷間加工率ｌＯ％以上のＮｉ−Ｔｉ系超
弾性合金線材に、張力を加えた状態で２５０℃以上、４
００℃未満の温度で１秒以上、２４時間以下の加熱処理
を施すことを特徴とするものである。That is, the present invention provides a Ni-Ti superelastic alloy wire with a cold working rate of 10% or more, which is heated at 250°C or more under tension at 4
It is characterized by performing heat treatment at a temperature of less than 00° C. for 1 second or more and 24 hours or less.
本発明において、Ｎｉ−Ｔｉ系超弾性合金線材とは、常
温で８％までの変形歪が除荷によって回復するものでＮ
ｉ含有ｆｆｉ５０ｘｌ％以上、残部Ｔｉ又はそのＮｉと
Ｔｉの一部をＦｅ，Ｃｏ，Ｃｒ，Ｃｕの何れか１種以上
で置換したＮｉ−Ｔｉ系超弾性合金の冷間加工上りの線
材であり、その冷間加工率をｌＯ％以上と限定したのは
、加工率が１０％未満では、十分な高発生力が得られな
いためである。In the present invention, the Ni-Ti superelastic alloy wire is one that recovers deformation strain of up to 8% at room temperature by unloading.
A cold-worked wire rod of a Ni-Ti-based superelastic alloy with an i-containing ffi of 50xl% or more, the remainder Ti, or a part of the Ni and Ti replaced with one or more of Fe, Co, Cr, and Cu, The reason why the cold working rate is limited to 10% or more is because if the working rate is less than 10%, a sufficiently high generated force cannot be obtained.
また加熱処理に張力を加えるのは、比較的低温の加熱処
理によっても［１＋１り等の歪を除去するためであり、
また加熱処理を２５０℃以上、４００℃未満の温度範囲
で１秒以上、２４時間以下と限定したのは、何れも下限
未満では、荷重一歪特性において歪が残ってしまい、超
弾性を示さなくなる。また上限を超えると十分な高発生
力が得られないためである。Also, the reason why tension is applied during heat treatment is to remove distortions such as [1+1] even by heat treatment at a relatively low temperature.
In addition, the heat treatment was limited to 1 second or more and 24 hours or less in a temperature range of 250°C or higher and less than 400°C, because if the temperature is below the lower limit, strain will remain in the load-strain characteristics and superelasticity will not be exhibited. . Moreover, if the upper limit is exceeded, a sufficiently high generated force cannot be obtained.
以下本発明を実施例について説明する。 The present invention will be described below with reference to Examples.
Ｎ ｉ −Ｔ ｉ系超弾性合金線材に、Ｎｉ含有量５１
！１％，残部Ｔｉからなる冷間加工率４０％の線径０’
．３ｍｌｍの線材を用い、、これを第１図に示すように
、サブライスタンド（２）から線材（１）を繰出し、巻
取機（３）に巻取る間に、加熱炉（４）を配置し、該加
熱炉（４）の入口側にブレーキ装置（５）と出口側にピ
ンチローラ（６）を設けて線材（１）に張力を付加した
状態で加熱炉（４）を通過させて線材（＋１を加熱処理
した。加熱炉（４）には、図に示してないが、炉内に内
径１０ｍ＋ｎのステンレス製パイプを装入し、このパイ
プ内に線材（１）を張力を加えた状態で走行通過させた
。The Ni-Ti superelastic alloy wire has a Ni content of 51
! 1%, the balance is Ti, and the wire diameter is 0' with a cold working rate of 40%.
．． Using a wire rod of 3 mlm, as shown in Fig. 1, the wire rod (1) is fed out from the sub-lay stand (2) and the heating furnace (4) is placed between the wire rods (1) and the winder (3). A brake device (5) is provided on the inlet side of the heating furnace (4), and a pinch roller (6) is provided on the outlet side, and the wire rod (1) is passed through the heating furnace (4) with tension applied to it. (+1 was heat-treated. Although not shown in the figure, a stainless steel pipe with an inner diameter of 10 m + n was placed in the heating furnace (4), and the wire rod (1) was placed under tension inside this pipe. I was able to drive through it.
このようにして加熱炉の温度を３６０゜Ｃに保持し、線
材の送り速度を４ｍ／ｍｉｎ，張力を５ｋｇ１／一にセ
ットしてＮ ｉ −Ｔ ｉ系超弾性合企線材を作製した
。この線材について超弾性特性の−評価法である応カー
歪特性を測定した。その結果を第２図に示す。In this way, the temperature of the heating furnace was maintained at 360° C., the feeding speed of the wire was set at 4 m/min, and the tension was set at 5 kg 1/1, thereby producing a Ni-Ti based superelastic joint wire. This wire was measured for stress strain characteristics, which is a method for evaluating superelastic properties. The results are shown in FIG.
図から明らかなように、ステージ部の発生応力（降伏応
力）は負荷時（歪２〜４％）で７０〜７１ｋｇｌ／ａｍ
，除荷時（歪４〜８％）で３７〜６０ｋｇ ｌ／一とな
り、従来のＮｉ−Ｔｉ系超弾性合金線材に比較し、本発
明によるＮ ｉ −Ｔ ｉ系超弾性合金線材は、高い発
生力が得られ、また負荷時の歪は除荷によりほとんど無
くなっていることが判る。As is clear from the figure, the stress generated in the stage section (yield stress) is 70 to 71 kgl/am when loaded (strain 2 to 4%).
, 37 to 60 kg l/1 when unloaded (strain 4 to 8%), and compared to the conventional Ni-Ti superelastic alloy wire, the Ni-Ti superelastic alloy wire according to the present invention has a high It can be seen that the generated force was obtained, and that the strain during loading was almost eliminated by unloading.
このように本発明によれば冷間加工率１０％以上のＮ
ｉ −Ｔ ｉ系超弾性合金線材に張力を加えた状態で２
５０℃以上，４００℃未満の温度で、１秒以上、２４時
間の加熱処理を施すことにより、従来のＮｉ−Ｔｉ系超
弾性合金線材より高発生力を持つことが可能となり、線
径の細径化に伴う発生荷重の低下を補い、設計上の自由
度を大きくする等、工業上顕著な効果を奏するものであ
る。As described above, according to the present invention, N with a cold working rate of 10% or more
i-T i-based superelastic alloy wire under tension 2
By applying heat treatment at a temperature of 50°C or higher and lower than 400°C for 1 second or more for 24 hours, it is possible to generate a higher force than conventional Ni-Ti superelastic alloy wire, and it is possible to create a wire with a small diameter. This has significant industrial effects, such as compensating for the decrease in load generated due to diameter diameter and increasing the degree of freedom in design.
第１図は本発明製造方法における加熱処理方法の説明図
、第２図は本発明製造方法によるＮｉ−Ｔｉ系超弾性合
金線材の超弾性特性（応力一歪特性）線図、第３図は従
来製造方法によるＮ ｉ −Ｔ ｉ系超弾性合金線材の
超弾性特性（荷重一歪特性）線図である。
ｌ）線材
２ サブライスタンド
３）巻取機
４）加熱炉
５）ブレーキ装置
６）ピンチローラ
第２図
伸び
（％）Fig. 1 is an explanatory diagram of the heat treatment method in the production method of the present invention, Fig. 2 is a superelastic property (stress-strain property) diagram of the Ni-Ti based superelastic alloy wire produced by the production method of the present invention, and Fig. 3 is FIG. 2 is a superelastic property (load-strain property) diagram of a Ni-Ti based superelastic alloy wire produced by a conventional manufacturing method. l) Wire rod 2 Sub-light stand 3) Winding machine 4) Heating furnace 5) Brake device 6) Pinch roller Fig. 2 Elongation (%)
Claims (1)
、張力を加えた状態で２５０℃以上、４００℃未満の温
度で１秒以上、２４時間以下の加熱処理を施すことを特
徴とするＮｉ−Ｔｉ系超弾性合金線材の製造方法。A Ni-Ti superelastic alloy wire with a cold working ratio of 10% or more is heat-treated under tension at a temperature of 250°C or more and less than 400°C for 1 second or more and 24 hours or less. A method for manufacturing a Ni-Ti based superelastic alloy wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15657789A JPH0324253A (en) | 1989-06-19 | 1989-06-19 | Production of ni-ti superelastic alloy wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15657789A JPH0324253A (en) | 1989-06-19 | 1989-06-19 | Production of ni-ti superelastic alloy wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0324253A true JPH0324253A (en) | 1991-02-01 |
Family
ID=15630806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15657789A Pending JPH0324253A (en) | 1989-06-19 | 1989-06-19 | Production of ni-ti superelastic alloy wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0324253A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0846421A (en) * | 1995-07-28 | 1996-02-16 | Furukawa Electric Co Ltd:The | Core element wire for antenna |
-
1989
- 1989-06-19 JP JP15657789A patent/JPH0324253A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0846421A (en) * | 1995-07-28 | 1996-02-16 | Furukawa Electric Co Ltd:The | Core element wire for antenna |
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