JPH04358039A - Additive alloy - Google Patents
Additive alloyInfo
- Publication number
- JPH04358039A JPH04358039A JP1824791A JP1824791A JPH04358039A JP H04358039 A JPH04358039 A JP H04358039A JP 1824791 A JP1824791 A JP 1824791A JP 1824791 A JP1824791 A JP 1824791A JP H04358039 A JPH04358039 A JP H04358039A
- Authority
- JP
- Japan
- Prior art keywords
- graphite
- additive alloy
- weight
- alloy
- additive
- 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
- 239000000654 additive Substances 0.000 title claims abstract description 18
- 230000000996 additive effect Effects 0.000 title claims abstract description 18
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 18
- 239000000956 alloy Substances 0.000 title claims abstract description 18
- 239000011777 magnesium Substances 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052779 Neodymium Inorganic materials 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 229910052692 Dysprosium Inorganic materials 0.000 claims abstract description 6
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052796 boron Inorganic materials 0.000 claims abstract description 4
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 4
- 239000010941 cobalt Substances 0.000 claims abstract description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 4
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims abstract description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000010703 silicon Substances 0.000 claims abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 22
- 229910002804 graphite Inorganic materials 0.000 abstract description 21
- 239000010439 graphite Substances 0.000 abstract description 21
- 229910001141 Ductile iron Inorganic materials 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 6
- 239000003795 chemical substances by application Substances 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009827 uniform distribution Methods 0.000 description 3
- 229910000805 Pig iron Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002054 inoculum Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明はダクタイル鋳鉄、強じん
鋳物の製造に有用とされる添加合金に関するものである
。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an additive alloy useful for producing ductile cast iron and strong castings.
【０００２】0002
【従来の技術】鋳鉄、特に球状黒鉛鋳鉄は、Ｍｇ、Ｃｅ
、Ｃａ、Ｌｉ等の黒鉛球状化能のある元素を含む黒鉛球
状化剤で処理されて得られる。この球状黒鉛鋳鉄には小
球状、楕円状等の黒鉛が存在するが、最近では単に球状
化だけに限らず、抗張力、伸び、硬度等の機械的性質の
一層の向上を目的として球状黒鉛の均一化が要求される
ようになってきている。[Prior Art] Cast iron, especially spheroidal graphite cast iron, contains Mg, Ce,
It is obtained by treatment with a graphite spheroidizing agent containing an element capable of spheroidizing graphite such as , Ca, and Li. This spheroidal graphite cast iron has small spheroidal, elliptical, etc. graphite, but recently, the aim of not only spheroidizing but also further improving mechanical properties such as tensile strength, elongation, and hardness is to make spheroidal graphite uniform. Increasingly, there is a demand for
【０００３】0003
【発明が解決しようとする課題】しかしながら球状黒鉛
鋳鉄の製造において黒鉛を均一な球状でかつ均一に分布
させることは実際上極めて困難であり、従来でも有効な
る技術は確立されていない。本発明の目的は均一な球状
黒鉛を均一に分布させることのできる球状黒鉛鋳鉄用添
加合金を提供しようとするものである。[Problems to be Solved by the Invention] However, in the production of spheroidal graphite cast iron, it is actually extremely difficult to uniformly distribute graphite in a uniform spherical shape, and no effective technique has been established to date. An object of the present invention is to provide an additive alloy for spheroidal graphite cast iron that can uniformly distribute spheroidal graphite.
【０００４】0004
【課題を解決するための手段】本発明者等はかかる課題
を解決するために、黒鉛の球状化を促進すると共に、黒
鉛粒の均一な分布を達成するための添加合金を得るべく
種々研究実験を重ねた結果、本発明に到達したもので、
その要旨は、重量％でマグネシウム（Ｍｇ） ２．０〜
１０．０％、ネオジウム（Ｎｄ）およびディスプロシウ
ム（Ｄｙ）０．５ 〜 ４．０％、けい素（Ｓｉ）４０
〜８０％並びに残部が主として鉄（Ｆｅ）からなる添加
合金、およびＭｇ ２．０〜１０．０％、Ｎｄ＋Ｄｙ
０．５〜 ４．０％、Ｓｉ ４０ 〜８０％とからなり
、さらにコバルト（Ｃｏ）、ボロン（Ｂ）、アルミニウ
ム（Ａｌ）の内から選択される１種又は２種以上を０．
０１〜 １．０％含有し、残部が主としてＦｅからなる
添加合金にある。[Means for Solving the Problems] In order to solve the problems, the present inventors conducted various research experiments to obtain an additive alloy that promotes the spheroidization of graphite and achieves a uniform distribution of graphite particles. As a result of repeated efforts, we arrived at the present invention,
The gist is that magnesium (Mg) 2.0 to 2.0% by weight
10.0%, neodymium (Nd) and dysprosium (Dy) 0.5 to 4.0%, silicon (Si) 40
-80% and the balance mainly consists of iron (Fe), and Mg 2.0-10.0%, Nd+Dy
0.5 to 4.0%, Si40 to 80%, and further contains 0.5 to 4.0% of one or more selected from cobalt (Co), boron (B), and aluminum (Al).
01 to 1.0%, with the remainder mainly consisting of Fe.
【０００５】以下、本発明を詳細に説明する。添加合金
元素として選択したものは、基本的にディスプロシウム
（Ｄｙ）であり、これを発展させたものとして、ネオジ
ウム（Ｎｄ）＋Ｄｙ、Ｎｄ＋Ｄｙ＋コバルト（Ｃｏ）、
Ｎｄ＋Ｄｙ＋Ｃｏ＋ボロン（Ｂ）、さらにはＮｄ＋Ｄｙ
＋Ｃｏ＋Ｂ＋Ａｌが有効である。ここでＤｙについては
０．５〜 ４．０％（以下、％は全て重量％を表す）
であること事が必須要件であり、 ０．５％未満では添
加効果がなく、 ４．０％を越えると望ましい黒鉛形状
が得られ難くなる。Ｎｄ＋Ｄｙの構成比率は重量％比で
Ｎｄ／Ｄｙ＝０〜１０の範囲が良く、１０を越えると効
果が薄くなる。（Ｃｏ＋Ｂ＋Ａｌ）についてはこれらの
内から選択される１種または２種以上を０．０１％〜
１．０％添加することが球状化に対して有効であり、０
．０１％未満では添加効果がなく、 １．０％を越える
と機械的性質が劣化する。ＭｇとＳｉについては黒鉛球
状化能のある元素として古くから知られており、本発明
では黒鉛の整粒性能を持たせるために添加している。以
上の元素の組合せで、黒鉛は均一球状粒子となり、分布
も均一な球状黒鉛鋳鉄が得られる。[0005] The present invention will be explained in detail below. The additive alloying element selected is basically dysprosium (Dy), and as developments from this, neodymium (Nd) + Dy, Nd + Dy + cobalt (Co),
Nd+Dy+Co+Boron (B), and even Nd+Dy
+Co+B+Al is effective. Here, Dy is 0.5 to 4.0% (hereinafter, all % represents weight %)
It is an essential requirement that the content be less than 0.5%, there is no effect of addition, and if it exceeds 4.0%, it becomes difficult to obtain the desired graphite shape. The composition ratio of Nd+Dy is preferably in the range of Nd/Dy=0 to 10 in weight percent, and if it exceeds 10, the effect becomes weak. For (Co+B+Al), 0.01% or more of one or more selected from these
Adding 1.0% is effective against spheroidization, and 0
．． If it is less than 1.0%, there is no effect of addition, and if it exceeds 1.0%, the mechanical properties will deteriorate. Mg and Si have been known for a long time as elements that have the ability to form graphite into spheroidal shapes, and are added in the present invention to provide graphite sizing ability. By combining the above elements, graphite becomes uniform spherical particles, and spheroidal graphite cast iron with uniform distribution can be obtained.
【０００６】本添加合金による球状黒鉛鋳鉄の製造方法
は従来公知の方法によれば良く、白銑鋳物を高温下に添
加合金を加えて処理することにより製造されるもので、
普通鋳鉄に比較して約２倍の引張り強さと多少の延性を
持っている。通常約９５０ ℃の高温下で焼鈍するが、
この時、白銑中の炭素は黒鉛化し、微細な黒鉛として分
離する。その結果、地鉄素地に黒鉛が細かい粒状または
結節状となり、鋳物の機械的性質が向上する。[0006] The method for producing spheroidal graphite cast iron using the present additive alloy may be any conventionally known method, and is produced by treating white pig iron castings at high temperatures with the addition of the additive alloy.
It has approximately twice the tensile strength and some ductility compared to ordinary cast iron. Usually annealed at a high temperature of about 950℃,
At this time, the carbon in the white pig iron graphitizes and separates as fine graphite. As a result, the graphite becomes finely granular or nodular in the base iron, improving the mechanical properties of the casting.
【０００７】[0007]
【実施例】以下、本発明の実施態様を実施例を挙げて具
体的に説明するが、本発明はこれらによって限定される
ものではない。
（実施例１〜５）処理溶湯成分をＣ： ３．８％、Ｓｉ
： ２．１％、Ｍｎ： ０．３％、残部Ｆｅとし、本発
明の添加合金５種類で球状化処理し、 ＪＩＳ ５５０
２ に規定されているＹ形Ｂ号のブロックをつくり、そ
の条件と機械的性質の測定及び顕微鏡観察結果（１００
倍）を表１、図１に示した。[Examples] Hereinafter, the embodiments of the present invention will be specifically explained with reference to Examples, but the present invention is not limited thereto. (Examples 1 to 5) The treated molten metal components were C: 3.8%, Si
: 2.1%, Mn: 0.3%, balance Fe, spheroidized with 5 kinds of additive alloys of the present invention, JIS 550
A block of type Y type B specified in 2 was made, and its conditions and mechanical properties were measured and microscopic observation results (100
times) are shown in Table 1 and Figure 1.
【０００８】（比較例）従来からの球状化処理剤（フェ
ロシリコーンマグネシウム合金、希土類元素含有（ＲＥ
＝Ｌａ＋Ｃｅ＋Ｎｄ＋Ｄｙ＋・・・ トータル量）を使
用した以外は実施例１と同様の条件で球状化処理を行い
、性能を評価し、その条件と結果を表１、図２に示した
。(Comparative Example) Conventional spheroidizing agents (ferrosilicone magnesium alloy, rare earth element-containing (RE)
=La+Ce+Nd+Dy+...total amount) The spheroidizing process was performed under the same conditions as in Example 1, and the performance was evaluated. The conditions and results are shown in Table 1 and FIG. 2.
【０００９】[0009]
【表１】[Table 1]
【００１０】表１からわかる様に、本発明による添加合
金で処理した鋳鉄の球状黒鉛の均一性は良好で、かつ機
械的性質も向上する結果を得た。また図１および図２よ
り、本発明による添加合金で処理したものは黒鉛粒が均
一でかつ分布も均一であることがわかる。As can be seen from Table 1, the uniformity of the spheroidal graphite in cast iron treated with the additive alloy according to the present invention was good, and the mechanical properties were also improved. Furthermore, from FIGS. 1 and 2, it can be seen that the graphite particles treated with the additive alloy according to the present invention have uniform graphite grains and a uniform distribution.
【００１１】[0011]
【発明の効果】本発明の添加合金は、黒鉛球状化処理剤
としても、また接種剤として用いても黒鉛の整粒に強力
な効果を及ぼし、球状黒鉛鋳鉄の機械的性質の改善向上
に大いに役立つ。[Effects of the Invention] The additive alloy of the present invention has a strong effect on sizing graphite when used as a graphite nodularizing agent or as an inoculant, and greatly improves the mechanical properties of spheroidal graphite cast iron. Helpful.
【図１】実施例 の球状黒鉛鋳鉄の破断面の顕微鏡写
真（１００ 倍）[Figure 1] Micrograph of the fracture surface of the spheroidal graphite cast iron of Example (100x magnification)
【図２】比較例 の球状黒鉛鋳鉄の破断面の顕微鏡写
真（１００ 倍）[Figure 2] Micrograph of fracture surface of spheroidal graphite cast iron of comparative example (100x magnification)
Claims (3)
１０．０％、ネオジウム（Ｎｄ）およびディスプロシウ
ム（Ｄｙ）０．５ 〜 ４．０％、けい素（Ｓｉ）４０
〜８０％並びに残部が主として鉄（Ｆｅ）からなる添加
合金。Claim 1: Magnesium (Mg) 2.0 to 2.0% by weight
10.0%, neodymium (Nd) and dysprosium (Dy) 0.5 to 4.0%, silicon (Si) 40
-80% of the additive alloy with the balance mainly consisting of iron (Fe).
＋Ｄｙ ０．５〜 ４．０％、Ｓｉ ４０ 〜８０％と
からなり、さらにコバルト（Ｃｏ）、ボロン（Ｂ）、ア
ルミニウム（Ａｌ）の内から選択される１種又は２種以
上を０．０１〜 １．０％含有し、残部が主としてＦｅ
からなる添加合金。Claim 2: Mg 2.0-10.0% by weight, Nd
+Dy 0.5 to 4.0%, Si 40 to 80%, and 0.01% of one or more selected from cobalt (Co), boron (B), and aluminum (Al). Contains ~1.0%, with the remainder mainly Fe
Additive alloy consisting of.
ｄ／Ｄｙ＝０〜１０の範囲である請求項１または２に記
載の添加合金。[Claim 3] The composition ratio (weight %) of Nd and Dy is N
The additive alloy according to claim 1 or 2, wherein d/Dy is in the range of 0 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1824791A JPH04358039A (en) | 1991-01-18 | 1991-01-18 | Additive alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1824791A JPH04358039A (en) | 1991-01-18 | 1991-01-18 | Additive alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04358039A true JPH04358039A (en) | 1992-12-11 |
Family
ID=11966352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1824791A Pending JPH04358039A (en) | 1991-01-18 | 1991-01-18 | Additive alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04358039A (en) |
-
1991
- 1991-01-18 JP JP1824791A patent/JPH04358039A/en active Pending
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