JPS62230926A - Production of cast iron high in pearlite - Google Patents
Production of cast iron high in pearliteInfo
- Publication number
- JPS62230926A JPS62230926A JP62058705A JP5870587A JPS62230926A JP S62230926 A JPS62230926 A JP S62230926A JP 62058705 A JP62058705 A JP 62058705A JP 5870587 A JP5870587 A JP 5870587A JP S62230926 A JPS62230926 A JP S62230926A
- Authority
- JP
- Japan
- Prior art keywords
- pearlite
- stabilizer
- melt
- cast iron
- casing
- 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
- 229910001562 pearlite Inorganic materials 0.000 title claims description 50
- 229910001018 Cast iron Inorganic materials 0.000 title claims description 31
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000003381 stabilizer Substances 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 18
- 239000002054 inoculum Substances 0.000 claims description 16
- 229910052718 tin Inorganic materials 0.000 claims description 16
- 239000000155 melt Substances 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 11
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 7
- 229910052787 antimony Inorganic materials 0.000 claims description 7
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 11
- 235000019362 perlite Nutrition 0.000 claims 5
- 239000010451 perlite Substances 0.000 claims 5
- 230000006641 stabilisation Effects 0.000 claims 3
- 238000011105 stabilization Methods 0.000 claims 3
- 239000000126 substance Substances 0.000 claims 1
- 239000010949 copper Substances 0.000 description 9
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 6
- 238000005266 casting Methods 0.000 description 4
- 229910001141 Ductile iron Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910005347 FeSi Inorganic materials 0.000 description 1
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/10—Making spheroidal graphite cast-iron
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/08—Manufacture of cast-iron
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/10—Making spheroidal graphite cast-iron
- C21C1/105—Nodularising additive agents
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明はパーライト値の高い鋳鉄、例えばネズミ鋳鉄、
球状黒鉛鋳鉄（ｒＧＧＧ Ｊ）およびバーミキニラ鋳鉄
（ｖｅｒｍｉｃｕｌａｒ ｃａｓｔ １ｒｏｎ）（ｒＧ
ＧＶ Ｊ ）を製造する方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention uses cast iron with a high pearlite value, such as gray cast iron,
Spheroidal graphite cast iron (rGGG J) and vermicular cast iron (rG
GV J ).
従来、溶融物を溶融炉またはトリベに注出する間に、溶
融鋳鉄にパーライト安定剤、例えば銅を添加してパーラ
イト（ｐｅａｒｌｉｔｉｃ） ＧＧ、 ＧＧＧおよびＧ
ＧＶ鋳鉄を作ることは知られている。この処理は、特に
鋳鉄の溶融物を自動式溶融炉またはストパートリベから
鋳型に直接に注ぐ場合に行われている。Traditionally, pearlite stabilizers, such as copper, are added to molten cast iron to form pearlitic GG, GGG and G during pouring of the melt into a melting furnace or ladle.
It is known to make GV cast iron. This process is carried out in particular when the cast iron melt is poured directly into the mold from an automatic melting furnace or stopper rivet.
しかしながら、この処理は、同じ注出（保持）炉をパー
ライト値（ｐｅａｒｌｉｔｅ ｖａｌｕｅｓ）の高い鋳
鉄の製造に、およびフェライト値（ｆｅｒｒｉｔｉｃ
ｖａｌｕｅｃ）の高い鋳鉄の製造に用いる場合にユニの
欠点がある。パーライト鋳鉄の生成からフェライト鋳鉄
の生成にわたって変える必要のあるたびに、鋳鉄炉を完
全にからにする必要がある。この事は、パーライト安定
剤が少しでも炉に残留する場合には、フェライト値の高
い鋳鉄の製造に負の作用を与えるためである。しかしな
がら、空気作用（ｐｎｅｕｍａ−ｔｉｃａｌｌｙ ｏｐ
ｅｒａｔｅｄ）鋳造炉を完全にからにするプロセスは時
間を浪費する。更に、からにする間、全鋳造ラインを停
止する必要がある。However, this process requires the same pouring (holding) furnace to produce cast iron with high pearlite values and ferritic
Uni has a disadvantage when used in the production of high value cast iron. Each time it is necessary to change from producing pearlitic cast iron to producing ferritic cast iron, the cast iron furnace must be completely emptied. This is because if even a small amount of pearlite stabilizer remains in the furnace, it will have a negative effect on the production of cast iron with a high ferrite value. However, pneumatically
The process of completely emptying a foundry is time consuming. Additionally, the entire casting line must be shut down during drying.
それ故、パーライト鋳鉄の製造から移行する場合に、溶
融炉またはトリベを完全にからにする必要なく、パーラ
イト鋳鉄を製造する方法が望まれていた。Therefore, it would be desirable to have a method for producing pearlitic cast iron without having to completely empty the melting furnace or ladle when transitioning from the production of pearlitic cast iron.
本発明の目的は上述する従来における欠点を除去するも
ので、本発明は鋳鉄の溶融物を容器において生成し、こ
の溶融物を鋳型に移し、および溶融物を容器から鋳型に
移す際にパーライト安定剤を溶融物に導入することを特
徴とする。パーライト安定剤は溶融鋳鉄の注出流（ｐｏ
ｕｒｉｎｇ ｓｔｒｅａｍ）に添加するのが好ましい。It is an object of the present invention to obviate the drawbacks of the prior art mentioned above, and to provide a method for producing a cast iron melt in a vessel, transferring the melt to a mold, and stabilizing pearlite during transfer of the melt from the vessel to the mold. characterized in that the agent is introduced into the melt. Pearlite stabilizers are added to the pour stream (po) of molten cast iron.
uring stream).
特に、パーライト安定剤は錫（Ｓｎ）またはアンチモン
（Ｓｂ）からなるのが好ましい。In particular, it is preferred that the pearlite stabilizer consists of tin (Sn) or antimony (Sb).
本発明の好適例について説明する。広い範囲において、
本発明の方法は鋳鉄の溶融物を鋳造炉または鋳造トリベ
から鋳型の内部に移す間に、少なくとも１種のパーライ
ト安定剤を溶融物に添加することからなる。パーライト
安定剤は溶融鋳鉄の注出流に添加するのが好ましい。こ
の手段において、溶融および鋳造組織（ｓｔｒｕｃｔｕ
ｒｅｓ）がパーライト安定剤により汚染にさらされなく
なる。A preferred example of the present invention will be described. In a wide range of
The method of the invention consists of adding at least one pearlite stabilizer to the cast iron melt during its transfer from the casting furnace or casting ladle to the interior of the mold. Preferably, the pearlite stabilizer is added to the molten cast iron pour stream. In this way, the molten and cast structure (structure
res) is no longer exposed to contamination by the pearlite stabilizer.
パーライト安定剤は、溶融物を熱源から除去した後に、
溶融物に添加するために、パーライト安定剤は注出流に
おける熱負荷をあまり大きくしないようにすることが大
切である。従って、パーライト安定剤は銅（Ｃｕ）より
著しく少堡で使用できる？ＪＡ （Ｓｎ）またはアンチ
モイ（Ｓｂ）からなる。この事は、添加量のパーライト
安定剤および添加できる接種剤を、注出流に導入する際
に、直ちにおよび均等に溶融することができる。また、
この速やかな溶融は低い溶融温度、およびＣｕと比較し
てＳｎおよびｓｂの低い比熱値によって容易に達成され
る。Pearlite stabilizers are added after the melt is removed from the heat source.
Since it is added to the melt, it is important that the pearlite stabilizer does not add too much heat load to the pour stream. Therefore, pearlite stabilizers can be used with significantly less fortification than copper (Cu). It consists of JA (Sn) or antimoy (Sb). This allows the added amount of pearlite stabilizer and any additional inoculant to melt immediately and evenly when introduced into the pour stream. Also,
This rapid melting is easily achieved due to the low melting temperature and low specific heat values of Sn and sb compared to Cu.
次に、本発明を実施例について説明する。Next, the present invention will be described with reference to examples.
実施例Ｉ
ＧＧＧ ５０として知られている球状黒鉛鋳鉄を製造す
る場合に、一般に０．３％のＣｕを合金として鋳鉄溶融
物に添加して必要なパーライト含有量を達成させた。一
般に０．１ ％以下のＣｕを含有するクズ鉄を溶融した
場合に、約０．０１５％のＳｎの添加は必要なパーライ
ト値を達成するのに必要であった。この結果、０．０１
５ ％のＳｎは０．２ ％のＣｕと同等の作用を示すこ
とがわかる。Example I In producing a spheroidal graphite cast iron known as GGG 50, 0.3% Cu was generally added as an alloy to the cast iron melt to achieve the required pearlite content. When melting scrap iron containing generally less than 0.1% Cu, an addition of about 0.015% Sn was necessary to achieve the required pearlite value. As a result, 0.01
It can be seen that 5% Sn exhibits the same effect as 0.2% Cu.
実施例２
ＧＧＧ ６０として知られている球状黒鉛鋳鉄を製造す
る場合に、一般に０．５〜０．７％のＣｕを鋳鉄溶融物
に添加して必要なパーライト含有ｌを達成させた。実施
例１に記載すると同じ条件下で、約０．０１５％のｓｂ
の添加は必要なパーライト値を達成するのに必要であっ
た。この結果、このｓｂの添加量は０．４〜０．６ ％
のＣｕに相当していることがわかる。Example 2 In producing a spheroidal graphite cast iron known as GGG 60, typically 0.5-0.7% Cu was added to the cast iron melt to achieve the required pearlite content. Under the same conditions as described in Example 1, approximately 0.015% sb
addition was necessary to achieve the required pearlite value. As a result, the amount of sb added was 0.4 to 0.6%.
It can be seen that this corresponds to Cu.
Ｓｎおよび／またはｓｂの如きパーライト安定剤は粉末
、針金の形態で、または金属または非金属ケーシングで
包囲したＳｎおよび／またはｓｂ粉末からなる針金の形
態で添加することができる。Ｓｎまたはｓｂは接種剤、
例えばＦｅＳｉ と組合わせて添加することができる。Pearlite stabilizers such as Sn and/or sb can be added in the form of powder, wire or wire consisting of Sn and/or sb powder surrounded by a metal or non-metallic casing. Sn or sb is an inoculant,
For example, it can be added in combination with FeSi.
パーライト安定剤および接種剤のこの組合わせは溶融物
に吹込む粉末混合物として、または合金として形成する
ことができる。また、この組合わせは金属または非金属
ケーシングで包囲した粉末混合物からなる針金として形
成することができる。また、粉末状の接種剤は金属ケー
シングで包囲でき、このケーシングの外面または内面に
ｓｂまたはＳｎを被着することができる。あるいは、ま
たＳｎまたはｓｂから形成したケーシングで包囲した粉
末状態の接種剤からなる針金を用いることができる。他
の例としては、Ｓｎまたはｓｂの添加物を、金属または
非金属材料から形成したケーシングで包囲する粉末接種
剤に埋め込む針金の形態で注出流に導入することができ
る。This combination of pearlite stabilizer and inoculant can be formed as a powder mixture that is blown into the melt or as an alloy. The combination can also be formed as a wire consisting of a powder mixture surrounded by a metallic or non-metallic casing. Further, the powdered inoculant can be surrounded by a metal casing, and sb or Sn can be coated on the outer or inner surface of this casing. Alternatively, it is also possible to use a wire consisting of a powdered inoculant surrounded by a casing made of Sn or sb. As another example, the Sn or sb additive can be introduced into the pour stream in the form of a wire embedded in a powdered inoculant surrounded by a casing formed from metallic or non-metallic materials.
ｓｂの沸騰温度は１，１４０℃であり、すなわち、処理
前の溶融物の普通の温度より低いから、パーライト安定
剤としてｓｂの使用は特に有利である。このように、ｓ
ｂは溶融プロセス中蒸発により除去でき、かつフェライ
ト値の高い鋳鉄の製造に作用しないように残留するから
、パーライト鋳鉄の製造からフェライト鋳鉄の製造に比
較的に転化しやすくなる。The use of sb as pearlite stabilizer is particularly advantageous since the boiling temperature of sb is 1,140° C., ie lower than the usual temperature of the melt before treatment. In this way, s
Since b can be removed by evaporation during the melting process and remains so as not to affect the production of cast iron with a high ferrite value, it is relatively easy to convert from production of pearlitic cast iron to production of ferritic cast iron.
上述するプロセスの特に有利なことは、フェライトおよ
びパーライト鋳鉄品質を同じ溶融炉および鋳造炉配置に
おいて、これらの単位装置をからにすることなく製造で
きることである。この場合、パーライト安定剤の残留物
がフェライト鋳鉄の後の製造に作用する危険性を除去す
ることができる。A particular advantage of the process described above is that ferritic and pearlitic cast iron qualities can be produced in the same melting and casting furnace arrangement without emptying these units. In this case, the risk of residues of pearlite stabilizers acting on the subsequent production of ferritic cast iron can be eliminated.
上述する針金の形態でＳｎまたはｓｂを接種剤と注出流
に添加することは、Ｓｎまたはｓｂの正確な投与を可能
にできるために極めて有利である。Adding Sn or sb in the form of a wire as described above to the inoculum and to the pouring stream is highly advantageous as it allows for precise dosing of the Sn or sb.
Claims (1)
鋳型に移行し；および前記溶融物を前記容器から前記鋳
型に移す間にパーライト安定剤を前記溶融物に導入する
ことを特徴とするパーライト含有量の高い鋳鉄の製造方
法。 ２、前記パーライト安定剤を前記溶融物の注出流に導入
する特許請求の範囲第１項記載の方法。 ３、前記パーライト安定剤は錫を含む特許請求の範囲第
１項記載の方法。 ４、前記パーライト安定剤はアンチモンを含む特許請求
の範囲第１項記載の方法。 ５、前記パーライト安定剤はパーライト安定性物質およ
び接種剤を含む特許請求の範囲第１項記載の方法。 ６、前記パーライト安定剤は針金の形態にする特許請求
の範囲第１項記載の方法。 ７、前記パーライト安定剤は粉末の形態にする特許請求
の範囲第１項記載の方法。 ８、前記パーライト安定剤は、金属または非金属材料か
ら形成したケーシングで包囲した粉末形態のパーライト
安定性物質とする特許請求の範囲第１項記載の方法。 ９、前記パーライト安定剤は、金属または非金属材料か
ら形成したケーシングで包囲した粉末状のパーライト安
定性物質および接種剤を含む針金の形態とする特許請求
の範囲第１項記載の方法。 １０、前記パーライト安定剤はパーライト安定剤から形
成したケーシングで包囲した粉末形態の接種剤を含む特
許請求の範囲第１項記載の方法。 １１、前記パーライト安定剤はケーシングで包囲した粉
末形態の接種剤および前記ケーシングに層状に被着した
パーライト安定性物質からなる特許請求の範囲第１項記
載の方法。 １２、前記パーライト安定剤は粉末状の接種剤に埋め込
む針金の形態のパーライト安定性物質を含み、前記粉末
はケーシングで包囲する特許請求の範囲第１項記載の方
法。 １３、パーライト含有量の高い前記鋳鉄はＧＧ、ＧＧＧ
またはＧＧＶ鋳鉄からなる特許請求の範囲第１項記載の
方法。 １４、鋳鉄の溶融物を容器において生成し；前記溶融物
を鋳型に移し；および前記溶融物を前記容器から前記鋳
型に移す間にパーライト安定剤を前記溶融物に導入し、
前記パーライト安定剤を錫およびアンチモンからなる群
から選択することを特徴とするパーライト値の高い鋳鉄
の製造方法。 １５、前記パーライト安定剤を前記溶融物の注出流に導
入する特許請求の範囲第１４項記載の方法。 １６、ケーシングで包囲した粉末形態のパーライト安定
性物質からなり、該パーライト安定性物質を錫およびア
ンチモンからなる群から選択したことを特徴とする針金
形態のパーライト安定剤。 １７、前記ケーシングで包囲した粉末状の接種剤を含む
特許請求の範囲第１６項記載のパーライト安定剤。 １８、錫およびアンチモンからなる群から選択したパー
ライト安定性物質から形成したケーシングで包囲した粉
末形態の接種剤を含むことを特徴とする針金形態のパー
ライト安定剤。 １９、ケーシングで包囲した粉末形態の接種剤および前
記ケーシングに層状に被着したパーライト安定性物質か
らなり、前記パーライト安定性物質は錫およびアンチモ
ンからなる群から選択したことを特徴とする針金形態の
パーライト安定剤。 ２０、ケーシングで包囲した粉末状接種剤に埋め込まれ
た針金の形態のパーライト安定性物質からなり、該パー
ライト安定性物質は錫およびアンチモンからなる群から
選択したことを特徴とする針金形態のパーライト安定剤
。Claims: 1. Producing a cast iron melt in a vessel; transferring the melt to a mold; and introducing a pearlite stabilizer into the melt while transferring the melt from the vessel to the mold. A method for producing cast iron with a high pearlite content. 2. The method of claim 1, wherein said pearlite stabilizer is introduced into said melt pour stream. 3. The method of claim 1, wherein the pearlite stabilizer comprises tin. 4. The method of claim 1, wherein the perlite stabilizer comprises antimony. 5. The method of claim 1, wherein the pearlite stabilizer comprises a pearlite stabilizing substance and an inoculant. 6. The method of claim 1, wherein the pearlite stabilizer is in the form of a wire. 7. The method of claim 1, wherein the pearlite stabilizer is in the form of a powder. 8. The method of claim 1, wherein the pearlite stabilizer is a pearlite stabilizing material in powder form surrounded by a casing formed from a metal or non-metallic material. 9. The method of claim 1, wherein the pearlite stabilizer is in the form of a wire containing a powdered pearlite stabilizing material and an inoculant surrounded by a casing formed from a metal or non-metallic material. 10. The method of claim 1, wherein said perlite stabilizer comprises an inoculant in powder form surrounded by a casing formed from the perlite stabilizer. 11. The method of claim 1, wherein the pearlite stabilizer comprises an inoculant in powder form surrounded by a casing and a pearlite stabilizing material deposited in a layer on the casing. 12. The method of claim 1, wherein said pearlite stabilizer comprises a pearlite stabilizing material in the form of a wire embedded in a powdered inoculum, said powder being surrounded by a casing. 13. The cast iron with high pearlite content is GG, GGG
or GGV cast iron, the method according to claim 1. 14. producing a cast iron melt in a vessel; transferring the melt to a mold; and introducing a pearlite stabilizer into the melt while transferring the melt from the vessel to the mold;
A method for producing cast iron with a high pearlite value, characterized in that the pearlite stabilizer is selected from the group consisting of tin and antimony. 15. The method of claim 14, wherein said pearlite stabilizer is introduced into said melt pour stream. 16. A pearlite stabilizer in the form of a wire, characterized in that it consists of a pearlite-stabilizing material in powder form surrounded by a casing, said pearlite-stabilizing material being selected from the group consisting of tin and antimony. 17. The pearlite stabilizer according to claim 16, which comprises a powdered inoculant surrounded by the casing. 18. Perlite stabilizer in wire form, characterized in that it comprises an inoculant in powder form surrounded by a casing formed from a pearlite stabilizing material selected from the group consisting of tin and antimony. 19. An inoculum in the form of a wire surrounded by a casing and a pearlite-stable material coated on the casing in a layered manner, the pearlite-stable material being selected from the group consisting of tin and antimony. Perlite stabilizer. 20. Pearlite stabilization in the form of a wire, comprising a pearlite stabilization material in the form of a wire embedded in a powdered inoculum surrounded by a casing, characterized in that the pearlite stabilization material is selected from the group consisting of tin and antimony. agent.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1131/86A CH665851A5 (en) | 1986-03-20 | 1986-03-20 | METHOD FOR PRODUCING PERLITIC CAST IRON TYPES. |
| CH01131/86-1 | 1986-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62230926A true JPS62230926A (en) | 1987-10-09 |
Family
ID=4203222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62058705A Pending JPS62230926A (en) | 1986-03-20 | 1987-03-13 | Production of cast iron high in pearlite |
Country Status (20)
| Country | Link |
|---|---|
| JP (1) | JPS62230926A (en) |
| KR (1) | KR910001353B1 (en) |
| CN (1) | CN1005994B (en) |
| AT (1) | AT398984B (en) |
| AU (1) | AU594439B2 (en) |
| CH (1) | CH665851A5 (en) |
| DD (1) | DD259001A5 (en) |
| DE (1) | DE3706901A1 (en) |
| ES (1) | ES2002591A6 (en) |
| FI (1) | FI85507C (en) |
| FR (1) | FR2601039B1 (en) |
| GB (1) | GB2187985B (en) |
| IN (1) | IN168111B (en) |
| IT (1) | IT1204930B (en) |
| NO (1) | NO871116L (en) |
| NZ (1) | NZ219725A (en) |
| PL (1) | PL264592A1 (en) |
| SE (1) | SE462976B (en) |
| YU (1) | YU41487A (en) |
| ZA (1) | ZA871685B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6973954B2 (en) * | 2001-12-20 | 2005-12-13 | International Engine Intellectual Property Company, Llc | Method for manufacture of gray cast iron for crankcases and cylinder heads |
| NO20045611D0 (en) * | 2004-12-23 | 2004-12-23 | Elkem Materials | Modifying agents for cast iron |
| CN102296226A (en) * | 2011-07-28 | 2011-12-28 | 徐州胜海机械制造科技有限公司 | Post inoculant for large-scale ductile iron casting and manufacture method thereof |
| CN102936679A (en) * | 2012-11-22 | 2013-02-20 | 宁夏共享集团有限责任公司 | Gray cast iron electric-furnace smelting method |
| CN106676250A (en) * | 2016-12-15 | 2017-05-17 | 广西大学 | Thermal treatment method for chilled cast iron roll |
| CN112962018B (en) * | 2021-01-29 | 2022-04-01 | 宁波日星铸业有限公司 | Chilling process manufacturing method of non-label QT600-7 nodular cast iron |
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| JPS5524980A (en) * | 1978-08-14 | 1980-02-22 | Mitsubishi Heavy Ind Ltd | Cast iron and spheroidal graphite cast iron surface hardening |
| JPS5575855A (en) * | 1978-11-30 | 1980-06-07 | Hitachi Metals Ltd | Adding method of inoculant |
| JPS5861209A (en) * | 1981-10-08 | 1983-04-12 | Kubota Ltd | Production of spheroidal graphite cast iron |
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| DE1483619B2 (en) * | 1965-01-11 | 1974-10-31 | Paderwerk Gebr. Benteler, 4794 Schloss Neuhaus | Continuous casting of killed steel |
| NL6511874A (en) * | 1965-09-10 | 1967-03-13 | ||
| DE1458899A1 (en) * | 1965-11-17 | 1969-02-13 | Metallgesellschaft Ag | Method of inoculating cast iron |
| LU50927A1 (en) * | 1966-04-19 | 1967-10-19 | ||
| GB1127486A (en) * | 1966-03-01 | 1968-09-18 | Edgar Allen & Co Ltd | Apparatus for the introduction of particulate material into molten metals |
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-
1986
- 1986-03-20 CH CH1131/86A patent/CH665851A5/en not_active IP Right Cessation
-
1987
- 1987-03-02 GB GB8704816A patent/GB2187985B/en not_active Expired - Fee Related
- 1987-03-04 DE DE19873706901 patent/DE3706901A1/en active Granted
- 1987-03-05 AT AT0049787A patent/AT398984B/en not_active IP Right Cessation
- 1987-03-09 IN IN187/CAL/87A patent/IN168111B/en unknown
- 1987-03-09 ZA ZA871685A patent/ZA871685B/en unknown
- 1987-03-12 PL PL1987264592A patent/PL264592A1/en unknown
- 1987-03-13 YU YU00414/87A patent/YU41487A/en unknown
- 1987-03-13 JP JP62058705A patent/JPS62230926A/en active Pending
- 1987-03-13 IT IT19681/87A patent/IT1204930B/en active
- 1987-03-13 KR KR1019870002274A patent/KR910001353B1/en not_active IP Right Cessation
- 1987-03-18 DD DD87300906A patent/DD259001A5/en not_active IP Right Cessation
- 1987-03-18 ES ES8700760A patent/ES2002591A6/en not_active Expired
- 1987-03-18 NO NO871116A patent/NO871116L/en unknown
- 1987-03-19 FI FI871214A patent/FI85507C/en not_active IP Right Cessation
- 1987-03-19 SE SE8701146A patent/SE462976B/en not_active IP Right Cessation
- 1987-03-19 FR FR8703842A patent/FR2601039B1/en not_active Expired - Fee Related
- 1987-03-20 AU AU70424/87A patent/AU594439B2/en not_active Ceased
- 1987-03-20 NZ NZ219725A patent/NZ219725A/en unknown
- 1987-03-20 CN CN87102216.8A patent/CN1005994B/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5524980A (en) * | 1978-08-14 | 1980-02-22 | Mitsubishi Heavy Ind Ltd | Cast iron and spheroidal graphite cast iron surface hardening |
| JPS5575855A (en) * | 1978-11-30 | 1980-06-07 | Hitachi Metals Ltd | Adding method of inoculant |
| JPS5861209A (en) * | 1981-10-08 | 1983-04-12 | Kubota Ltd | Production of spheroidal graphite cast iron |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3706901A1 (en) | 1987-10-01 |
| NO871116L (en) | 1987-09-21 |
| DD259001A5 (en) | 1988-08-10 |
| SE8701146D0 (en) | 1987-03-19 |
| YU41487A (en) | 1990-02-28 |
| CH665851A5 (en) | 1988-06-15 |
| FI871214A0 (en) | 1987-03-19 |
| DE3706901C2 (en) | 1989-02-16 |
| IN168111B (en) | 1991-02-09 |
| GB2187985A (en) | 1987-09-23 |
| SE8701146L (en) | 1987-09-21 |
| FI85507B (en) | 1992-01-15 |
| AT398984B (en) | 1995-02-27 |
| NO871116D0 (en) | 1987-03-18 |
| AU594439B2 (en) | 1990-03-08 |
| ATA49787A (en) | 1994-07-15 |
| GB2187985B (en) | 1990-12-12 |
| CN1005994B (en) | 1989-12-06 |
| GB8704816D0 (en) | 1987-04-08 |
| ZA871685B (en) | 1987-08-31 |
| IT8719681A0 (en) | 1987-03-13 |
| ES2002591A6 (en) | 1988-08-16 |
| KR910001353B1 (en) | 1991-03-04 |
| FR2601039B1 (en) | 1992-12-31 |
| SE462976B (en) | 1990-09-24 |
| CN87102216A (en) | 1987-09-30 |
| FI85507C (en) | 1992-04-27 |
| IT1204930B (en) | 1989-03-10 |
| PL264592A1 (en) | 1988-02-04 |
| FR2601039A1 (en) | 1988-01-08 |
| FI871214A (en) | 1987-09-21 |
| AU7042487A (en) | 1987-09-24 |
| KR870009036A (en) | 1987-10-22 |
| NZ219725A (en) | 1990-03-27 |
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