JPH04337052A - Ni-fe alloy and ni-cr-fe alloy excellent in blankability - Google Patents
Ni-fe alloy and ni-cr-fe alloy excellent in blankabilityInfo
- Publication number
- JPH04337052A JPH04337052A JP13980291A JP13980291A JPH04337052A JP H04337052 A JPH04337052 A JP H04337052A JP 13980291 A JP13980291 A JP 13980291A JP 13980291 A JP13980291 A JP 13980291A JP H04337052 A JPH04337052 A JP H04337052A
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- JP
- Japan
- Prior art keywords
- alloy
- weight
- content
- alloys
- punching
- 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.)
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Links
- 229910000640 Fe alloy Inorganic materials 0.000 title description 9
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 33
- 239000000956 alloy Substances 0.000 claims abstract description 33
- 229910003271 Ni-Fe Inorganic materials 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 229910019589 Cr—Fe Inorganic materials 0.000 abstract description 10
- 230000002411 adverse Effects 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 abstract 1
- 238000004080 punching Methods 0.000 description 17
- 239000000463 material Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- -1 oxides Chemical class 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
Landscapes
- Soft Magnetic Materials (AREA)
- Heat Treatment Of Steel (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、リードフレーム，封着
材料，軟質磁性材料等として使用される打抜き性に優れ
たＮｉ−Ｆｅ系合金及びＮｉ−Ｃｒ−Ｆｅ系合金に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to Ni--Fe alloys and Ni--Cr--Fe alloys that have excellent punchability and are used as lead frames, sealing materials, soft magnetic materials, and the like.
【０００２】0002
【従来の技術】Ｎｉ−Ｆｅ系合金，Ｎｉ−Ｃｒ−Ｆｅ系
合金等は、Ｎｉ含有量及びＣｒ含有量に応じて種々の熱
膨張係数を示す。そして、組成によっては、ガラス，セ
ラミックス等の熱膨張係数と近似した値の熱膨張係数を
示すため、セラミックス封止型の半導体装置用リードフ
レームやガラス封着用の材料として使用されている。ま
た、Ｎｉ及びＣｒの含有量を選択することによって、透
磁率の大きな軟質磁性材料として使用することもできる
。2. Description of the Related Art Ni--Fe alloys, Ni--Cr--Fe alloys, and the like exhibit various coefficients of thermal expansion depending on the Ni content and Cr content. Depending on the composition, it exhibits a thermal expansion coefficient similar to that of glass, ceramics, etc., so it is used as a lead frame for ceramic-sealed semiconductor devices and as a material for glass sealing. Furthermore, by selecting the contents of Ni and Cr, it can also be used as a soft magnetic material with high magnetic permeability.
【０００３】しかし、Ｎｉ−Ｆｅ系合金は、プレス加工
等によって打抜きを行うとき、靭性が高いことからバリ
等が発生し易い材料である。バリ発生等の欠陥は、高速
で精密部品を連続的に打ち抜く作業にあっては大きな問
題となり、高精度の打抜き作業を迅速に行う上での支障
となっている。[0003] However, Ni--Fe alloys are materials that tend to generate burrs when punched by press working or the like because of their high toughness. Defects such as the occurrence of burrs become a major problem in operations where precision parts are continuously punched out at high speeds, and are a hindrance to quickly performing high-precision punching operations.
【０００４】Ｎｉ−Ｆｅ系合金の打抜き性を向上させる
ため、数μｍ程度のＭｎ，Ｓ系介在物をマトリックス中
に微細に且つ均一に分散させることが知られている。た
とえば、特公昭６４−１１０９４号公報では、０．０５
〜１．００重量％のＭｎ及び０．００３〜０．０２５重
量％のＳを含有させると共に、Ｍｎ，Ｓｉ，Ａｌ，Ｚｒ
，Ｃａ，Ｍｇ，稀土類元素等の窒化物，炭化物，酸化物
，硫化物等の非金属介在物の大きさを特定することによ
って、Ｎｉ−Ｆｅ系合金の打抜き性及び切断加工性を向
上させている。[0004] In order to improve the punchability of Ni--Fe alloys, it is known to finely and uniformly disperse Mn, S-based inclusions of several micrometers in the matrix. For example, in Japanese Patent Publication No. 64-11094, 0.05
-1.00% by weight of Mn and 0.003-0.025% by weight of S, as well as Mn, Si, Al, Zr
By specifying the size of nonmetallic inclusions such as nitrides, carbides, oxides, and sulfides of Ca, Mg, and rare earth elements, we can improve the punchability and cutting workability of Ni-Fe alloys. ing.
【０００５】[0005]
【発明が解決しようとする課題】Ｍｎ，Ｓ系介在物によ
ってＮｉ−Ｆｅ系合金の打抜き性を改善する方法では、
Ｓを合金成分として添加する必要がある。ところが、Ｓ
は、粒界に偏析し易く、合金の熱間加工性を著しく低下
させる。また、Ｍｎ，Ｓ系介在物を分散させることによ
り、磁気特性が大幅に低下する。そのため、軟質磁性材
料として使用する場合、Ｍｎ，Ｓ系介在物を分散させる
方法を採用することができない。[Problems to be Solved by the Invention] A method for improving the punchability of Ni-Fe alloys using Mn, S-based inclusions includes the following steps:
It is necessary to add S as an alloy component. However, S
tends to segregate at grain boundaries, significantly reducing the hot workability of the alloy. Moreover, by dispersing Mn, S-based inclusions, the magnetic properties are significantly reduced. Therefore, when used as a soft magnetic material, a method of dispersing Mn, S-based inclusions cannot be adopted.
【０００６】このようなことから、Ｍｎ，Ｓ系介在物の
調整を行うことなく、他の手段でＮｉ−Ｆｅ系合金の打
抜き性を改善することが望まれていた。打抜き性の改善
に対する要求は、Ｎｉ−Ｃｒ−Ｆｅ系合金についても同
様である。[0006] For these reasons, it has been desired to improve the punchability of Ni--Fe alloys by other means without adjusting the Mn, S-based inclusions. The same requirement for improving punchability also applies to Ni-Cr-Fe alloys.
【０００７】本発明は、この要求に応えるべく案出され
たものであり、Ｃａの添加及びＳ含有量の規制により、
Ｍｎ，Ｓ系介在物の調整を行う必要なく、Ｎｉ−Ｆｅ系
合金又はＮｉ−Ｃｒ−Ｆｅ系合金の打抜き性を改善する
ことを目的とする。The present invention was devised to meet this demand, and by adding Ca and regulating the S content,
It is an object of the present invention to improve the punchability of Ni-Fe-based alloys or Ni-Cr-Fe-based alloys without the need to adjust Mn, S-based inclusions.
【０００８】[0008]
【課題を解決するための手段】本発明のＮｉ−Ｆｅ系合
金は、その目的を達成するため、３０〜５５重量％のＮ
ｉ及び０．００２０〜０．０５００重量％のＣａを含有
し、Ｓ含有量を０．００３０重量％以下に規制したこと
を特徴とする。[Means for Solving the Problems] In order to achieve the object, the Ni-Fe alloy of the present invention contains 30 to 55% by weight of N.
It is characterized by containing i and 0.0020 to 0.0500% by weight of Ca, and regulating the S content to 0.0030% by weight or less.
【０００９】また、Ｎｉ−Ｃｒ−Ｆｅ系合金は、３０〜
５５重量％のＮｉ，１５重量％以下のＣｒ及び０．００
２０〜０．０５００重量％のＣａを含有し、Ｓ含有量を
０．００３０重量％以下に規制したことを特徴とする。[0009] Furthermore, Ni-Cr-Fe alloys are
55% by weight Ni, 15% by weight or less Cr and 0.00% by weight
It is characterized by containing 20 to 0.0500% by weight of Ca and regulating the S content to 0.0030% by weight or less.
【００１０】なお、これらＮｉ−Ｆｅ系合金及びＮｉ−
Ｃｒ−Ｆｅ系合金においては、脱酸剤として使用される
Ｓｉ，Ａｌや脱酸脱硫剤として使用されるＭｎ等を総量
で２重量％以下含有することができる。[0010] Furthermore, these Ni-Fe alloys and Ni-
In the Cr-Fe alloy, Si and Al used as deoxidizing agents, Mn used as deoxidizing and desulfurizing agents, etc. can be contained in a total amount of 2% by weight or less.
【００１１】[0011]
【作 用】本発明者等は、Ｎｉ−Ｆｅ系合金及びＮｉ
−Ｃｒ−Ｆｅ系合金の打抜き性に与えるＣａの影響につ
いて研究を重ねた。その結果、０．００２０〜０．０５
００重量％のＣａを含有させ、且つＳ含有量を０．００
３０重量％以下に規制するとき、打抜き性が飛躍的に向
上することを見出した。しかも、この打抜き性の向上は
、Ｍｎ，Ｓ系介在物の調整を必要としないため、熱間加
工性，磁気特性等に悪影響を与えることがない。[Function] The present inventors have discovered that Ni-Fe alloys and Ni
We have conducted repeated research on the influence of Ca on the punchability of -Cr-Fe alloys. As a result, 0.0020 to 0.05
00% by weight of Ca and S content of 0.00% by weight.
It has been found that when the content is regulated to 30% by weight or less, the punching properties are dramatically improved. Moreover, this improvement in punchability does not require adjustment of Mn, S-based inclusions, and therefore does not adversely affect hot workability, magnetic properties, etc.
【００１２】以下、本発明で規定した合金成分の含有量
について説明する。
Ｎｉ：リードフレーム，封着材料等の用途面から要求さ
れる熱膨張係数を与える上で必要な合金元素であり、低
い熱膨張係数をもつ材料を得るためには３０〜５５重量
％の添加が必要である。また、Ｎｉの含有量が５５重量
％を超えるものにあっては、合金のコストを上げること
は勿論、飽和磁束密度及び最大透磁率が低下する傾向を
示す。逆に、Ｎｉ含有量が３０重量％未満では、必要と
する飽和磁束密度が得られない。このようなことから、
本発明においては、Ｎｉの含有量を３０〜５５重量％の
範囲に設定した。[0012] The contents of the alloy components specified in the present invention will be explained below. Ni: An alloying element necessary to provide the thermal expansion coefficient required for use in lead frames, sealing materials, etc. In order to obtain materials with a low thermal expansion coefficient, it is necessary to add 30 to 55% by weight. is necessary. Furthermore, if the Ni content exceeds 55% by weight, not only does the cost of the alloy increase, but also the saturation magnetic flux density and maximum magnetic permeability tend to decrease. Conversely, if the Ni content is less than 30% by weight, the required saturation magnetic flux density cannot be obtained. From such a thing,
In the present invention, the Ni content is set in the range of 30 to 55% by weight.
【００１３】Ｃｒ：合金元素としてＣｒを含有するＮｉ
−Ｃｒ−Ｆｅ系合金にあっては、封着用途に好適な熱膨
張係数、或いは軟質磁性用途に好適な磁気特性を得る上
で、Ｃｒ含有量の上限を１５重量％に規定している。Ｃ
ｒの含有量増加に伴って、最大透磁率が向上する。しか
し、１５重量％を超えるＣｒ含有量では、飽和磁束密度
が低下する傾向がみられる。Cr: Ni containing Cr as an alloying element
For -Cr-Fe alloys, the upper limit of the Cr content is set at 15% by weight in order to obtain a thermal expansion coefficient suitable for sealing applications or magnetic properties suitable for soft magnetic applications. C
As the content of r increases, the maximum magnetic permeability increases. However, when the Cr content exceeds 15% by weight, the saturation magnetic flux density tends to decrease.
【００１４】Ｃａ：Ｎｉ−Ｆｅ系合金及びＮｉ−Ｃｒ−
Ｆｅ系合金の打抜き性を改善する上で最も重要な合金成
分である。Ｃａの添加によって打抜き性が改善される理
由は、マトリックス中にＣａが均一に固溶することによ
り、マトリックスの靭性が低下することに由来するもの
と推察される。すなわち、Ｃａの添加により、素材が脆
くなり、打抜き破面生成時の破面近傍の塑性流動がほと
んど起こらなくなり、バリの発生が抑制されると推察さ
れる。このような効果を得るためには、図１に示すよう
に、０．００２０重量％以上のＣａ含有量が必要である
ことが実験的に確かめられた。しかし、Ｃａ含有量が０
．０５００重量％を超えるとき、打抜き性に与える作用
が飽和すると共に、熱間加工性が悪くなる。そこで、Ｃ
ａ含有量を、０．００２０〜０．０５００重量％の範囲
とした。[0014] Ca: Ni-Fe alloy and Ni-Cr-
It is the most important alloy component in improving the punchability of Fe-based alloys. The reason why the punchability is improved by adding Ca is presumed to be that the toughness of the matrix decreases due to uniform solid solution of Ca in the matrix. That is, it is inferred that the addition of Ca makes the material brittle, so that plastic flow near the fracture surface when punching fractures are generated hardly occurs, and the generation of burrs is suppressed. It was experimentally confirmed that in order to obtain such an effect, a Ca content of 0.0020% by weight or more is required, as shown in FIG. However, the Ca content is 0
．． When it exceeds 0.500% by weight, the effect on punching property becomes saturated and hot workability deteriorates. Therefore, C
The a content was set in the range of 0.0020 to 0.0500% by weight.
【００１５】Ｓ：精練により完全に除去することができ
ない不可避的不純物である。しかし、Ｓが０．００３０
重量％以上含有されるとき、合金組織中にＭｎ，Ｓ系の
介在物が形成され易くなる。これら介在物は、その分散
形態を調整するときには打抜き性を向上させるものであ
るが、前述したように熱間加工性や磁気特性を劣化させ
る。そこで、本発明においては、Ｍｎ，Ｓ系介在物が実
質的に生成されないように、Ｓ含有量を０．００３０重
量％未満に規定した。S: An unavoidable impurity that cannot be completely removed by scouring. However, S is 0.0030
When it is contained in an amount of % by weight or more, Mn, S-based inclusions are likely to be formed in the alloy structure. Although these inclusions improve punching properties when adjusting their dispersion form, they degrade hot workability and magnetic properties as described above. Therefore, in the present invention, the S content is specified to be less than 0.0030% by weight so that Mn,S-based inclusions are not substantially generated.
【００１６】[0016]
【実施例】以下、実施例によって、本発明を具体的に説
明する。表１に示した組成を持つ合金を真空溶解し、得
られたインゴットに熱間圧延及び冷間圧延を施して板厚
０．２ｍｍの冷延板を製造した。[Examples] The present invention will be specifically explained below with reference to Examples. An alloy having the composition shown in Table 1 was vacuum melted, and the obtained ingot was hot rolled and cold rolled to produce a cold rolled plate having a thickness of 0.2 mm.
【００１７】板厚０．２ｍｍの冷延板から試験片を切り
だした。そして図２に示すように試験片１を打抜き金型
２の上に載置し、上方からポンチ３で試験片１を打ち抜
いた。打抜き後、図３に示すように、試験片１の打抜き
部断面における剪断部４の長さ，破断部５の長さ及びバ
リ６の有無を調査した。調査結果を、表２に示す。A test piece was cut from a cold-rolled plate having a thickness of 0.2 mm. Then, as shown in FIG. 2, the test piece 1 was placed on a punching die 2, and the test piece 1 was punched out from above with a punch 3. After punching, as shown in FIG. 3, the length of the sheared part 4, the length of the broken part 5, and the presence or absence of burrs 6 in the cross section of the punched part of the test piece 1 were investigated. The survey results are shown in Table 2.
【００１８】[0018]
【表１】[Table 1]
【００１９】[0019]
【表２】[Table 2]
【００２０】表２から明らかなように、Ｃａ含有量及び
Ｓ含有量が本発明に規定した範囲にある本発明例１〜１
０の試験片にあっては、打抜き時にバリ等の発生がなく
、良好な打抜き性を示している。また、図１は、４２％
Ｎｉ−Ｆｅ系合金に対して、同様な方法によってＣａ含
有量が打抜き加工性に与える影響を調べた結果を表した
グラフである。表２及び図１から、Ｎｉ−Ｆｅ系合金及
びＮｉ−Ｃｒ−Ｆｅ系合金の打抜き加工性改善には、０
．００２０重量％以上のＣａ含有が必要であることが判
る。As is clear from Table 2, Examples 1 to 1 of the present invention have Ca content and S content within the range specified by the present invention.
In the test piece of No. 0, no burrs were generated during punching, indicating good punching performance. In addition, Figure 1 shows that 42%
It is a graph showing the results of investigating the influence of Ca content on punching workability of Ni-Fe alloys using a similar method. From Table 2 and FIG.
．． It can be seen that Ca content of 0.020% by weight or more is necessary.
【００２１】これに対し、Ｃａ含有量が０．００２０重
量％未満の比較例１１，１２，１３及び１５の試験片に
あっては、バリの発生がみられた。また、Ｃａ含有量が
０．０５００重量％を超える比較例１４及び１６の試験
片にあっては、打抜き加工性に関する限り本発明例の試
験片と同様な傾向を示したが、熱間圧延したときの形状
が不規則になる等の熱間加工性の劣化がみられた。On the other hand, burrs were observed in the test pieces of Comparative Examples 11, 12, 13, and 15 in which the Ca content was less than 0.0020% by weight. In addition, the test pieces of Comparative Examples 14 and 16 with a Ca content exceeding 0.0500% by weight showed the same tendency as the test pieces of the invention example as far as punching workability was concerned, but Deterioration of hot workability, such as irregular shape, was observed.
【００２２】[0022]
【発明の効果】以上に説明したように、本発明において
は、Ｃａ含有量及びＳ含有量を規制することによって、
Ｎｉ−Ｆｅ系合金及びＮｉ−Ｃｒ−Ｆｅ系合金の打抜き
加工性を改善している。この打抜き加工性改善は、従来
のようにＭｎ，Ｓ系介在物の調整によるものではないた
め、用途に応じて必要とされる熱間加工性，磁気特性等
の他の特性に悪影響を与えることがない。[Effects of the Invention] As explained above, in the present invention, by regulating the Ca content and S content,
The punching workability of Ni-Fe alloys and Ni-Cr-Fe alloys is improved. This improvement in punching workability is not due to the adjustment of Mn and S-based inclusions as in the past, so it does not adversely affect other properties such as hot workability and magnetic properties that are required depending on the application. There is no.
【図１】 Ｃａ含有量が打抜き加工性に与える影響を
示したグラフ[Figure 1] Graph showing the influence of Ca content on punching workability
【図２】 本発明実施例で打抜き試験に使用した打抜
き金型及びポンチを示す斜視図[Figure 2] A perspective view showing the punching die and punch used in the punching test in the example of the present invention
【図３】 同じく打抜かれた後の試験片の打抜き部分
を示した断面図[Figure 3] Cross-sectional view showing the punched part of the test piece after being similarly punched
１ 試験片 ２ 打抜
き金型 ３ ポンチ
４ 剪断部 ５ 破断
部 ６ バリ1 Test piece 2 Punching die 3 Punch 4 Shearing part 5 Broken part 6 Burr
Claims (2)
２０〜０．０５００重量％のＣａを含有し、Ｓ含有量を
０．００３０重量％未満に規制したことを特徴とする打
抜き性に優れたＮｉ−Ｆｅ系合金。Claim 1: 30-55% by weight of Ni and 0.00% by weight
A Ni-Fe alloy with excellent punchability, characterized by containing 20 to 0.0500% by weight of Ca and regulating the S content to less than 0.0030% by weight.
以下のＣｒ及び０．００２０〜０．０５００重量％のＣ
ａを含有し、Ｓ含有量を０．００３０重量％未満に規制
したことを特徴とする打抜き性に優れたＮｉ−Ｃｒ−Ｆ
ｅ系合金。2. 30-55% by weight Ni, 15% by weight
The following Cr and 0.0020 to 0.0500 wt% C
Ni-Cr-F with excellent punchability characterized by containing a and regulating the S content to less than 0.0030% by weight
e-based alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13980291A JP3483580B2 (en) | 1991-05-15 | 1991-05-15 | Ni-Fe-based alloy and Ni-Cr-Fe-based alloy with excellent punchability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13980291A JP3483580B2 (en) | 1991-05-15 | 1991-05-15 | Ni-Fe-based alloy and Ni-Cr-Fe-based alloy with excellent punchability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04337052A true JPH04337052A (en) | 1992-11-25 |
| JP3483580B2 JP3483580B2 (en) | 2004-01-06 |
Family
ID=15253777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13980291A Expired - Fee Related JP3483580B2 (en) | 1991-05-15 | 1991-05-15 | Ni-Fe-based alloy and Ni-Cr-Fe-based alloy with excellent punchability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3483580B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0818550A1 (en) * | 1996-07-12 | 1998-01-14 | Krupp VDM GmbH | Corrosion resistant soft magnetic iron-nickel-chrome alloy |
| WO2000063454A1 (en) * | 1999-04-15 | 2000-10-26 | Vacuumschmelze Gmbh | Corrosion-free iron-nickel alloy for residual-current circuit-breakers and clockworks |
-
1991
- 1991-05-15 JP JP13980291A patent/JP3483580B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0818550A1 (en) * | 1996-07-12 | 1998-01-14 | Krupp VDM GmbH | Corrosion resistant soft magnetic iron-nickel-chrome alloy |
| WO2000063454A1 (en) * | 1999-04-15 | 2000-10-26 | Vacuumschmelze Gmbh | Corrosion-free iron-nickel alloy for residual-current circuit-breakers and clockworks |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3483580B2 (en) | 2004-01-06 |
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