JPS61136657A - Cast metallic mold for molding plastic - Google Patents
Cast metallic mold for molding plasticInfo
- Publication number
- JPS61136657A JPS61136657A JP59256980A JP25698084A JPS61136657A JP S61136657 A JPS61136657 A JP S61136657A JP 59256980 A JP59256980 A JP 59256980A JP 25698084 A JP25698084 A JP 25698084A JP S61136657 A JPS61136657 A JP S61136657A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- plastic molding
- spheroidal graphite
- metallic mold
- plastic
- 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
- 239000004033 plastic Substances 0.000 title claims abstract description 10
- 229920003023 plastic Polymers 0.000 title claims abstract description 10
- 238000000465 moulding Methods 0.000 title abstract description 5
- 238000010137 moulding (plastic) Methods 0.000 claims abstract description 28
- 238000005266 casting Methods 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 18
- 239000010439 graphite Substances 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 18
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 6
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 10
- 229910001141 Ductile iron Inorganic materials 0.000 abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052748 manganese Inorganic materials 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005087 graphitization Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- -1 8% or less Inorganic materials 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910018663 Mn O Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000007531 graphite casting Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000002054 inoculum Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/04—Cast-iron alloys containing spheroidal graphite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は球状黒鉛鋳鉄よりなるプラスチック成形用鋳造
金型に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a casting mold for plastic molding made of spheroidal graphite cast iron.
（従来の技術）
従来のプラスチック成形用鋳造金型は金型主体を各種鋼
材よりなるものとしているが、鋼は凝固する際の収縮率
が大きいため寸法精度の良い金型を鋳造することが困難
であるうえ鋳造された金型の隅角部に割れが多発すると
いう欠点があった。(Prior art) Conventional casting molds for plastic molding are mainly made of various steel materials, but steel has a high shrinkage rate when solidifying, making it difficult to cast molds with good dimensional accuracy. Moreover, there was a drawback that cracks frequently occurred at the corners of the mold in which the mold was cast.
（発明が解決しようとする問題点）
本発明は前記のような欠点を除いてプラスチック成形面
が平滑であり、しかも寸法精度良く鋳造することができ
るうえに隅角部に割れの生ずることもないプラスチック
成形用鋳造金型を目的として完成されたものである。(Problems to be Solved by the Invention) The present invention, except for the above-mentioned drawbacks, has a smooth plastic molding surface, can be cast with high dimensional accuracy, and does not have cracks in the corners. It was completed for the purpose of being used as a casting mold for plastic molding.
（問題点を解決するための手段）
本発明は重量比でＣ２，５〜３．８％、Ｓｔ ２．０〜
３．０％、Ｍｎ Ｏ，８％以下、Ｎｉ ２．Ｏ〜５．０
％、Ｃｕ Ｏ，２〜１゜５％、Ｍｏ ０．２〜１．０％
、残部がＦｅ及び球状化元素の組成を有する球状黒鉛鋳
鉄からなり、そのプラスチック成形面に微細な球状黒鉛
粒子を晶出させたことを特徴とするものである。(Means for solving the problems) The present invention has a weight ratio of C2.5 to 3.8% and St 2.0 to
3.0%, Mn O, 8% or less, Ni 2. O~5.0
%, Cu O, 2-1°5%, Mo 0.2-1.0%
It is characterized by being made of spheroidal graphite cast iron with the balance being Fe and a spheroidizing element, and having fine spheroidal graphite particles crystallized on its plastic molded surface.
本発明においては金型主体を鋼に代えて上記のような特
殊組成の球状黒鉛鋳造よりなるものとして鋼を素材とし
たものに見られた寸法精度上の問題点や金型の隅角部に
生じていた割れの発生を防止するようにしたものである
０次に本発明において球状黒鉛鋳鉄の組成を上記のよう
に限定した理由を説明すると、Ｃは低融点化、低収縮化
を図るための元素であり、溶湯の凝固時の体積変化を小
さくするためには３．８％以下の過共晶組成を用いるの
が適当で、炭素含有量がこれ以上となると溶湯中の初晶
黒鉛の発生が著しく、逆に２．５％以下では融点が上昇
するため注湯の温度を上げる必要があるうえ体積変化が
大きくなるため凝固時に大きい収縮が生ずるから、２゜
５〜３．８％の範囲が好ましい。また、Ｓｉは黒鉛化促
進元素であり、２．０％以下では黒鉛化が不十分である
ためチルの発生による硬度の不均一と収縮率増大による
収縮割れを生じ易く、逆に３．０％を越えると初晶黒鉛
の晶出量を増大させて黒鉛が粗大化する傾向を示すので
２．０−３．０％の範囲が好ましい。さらに、Ｍｎは０
．８％を越えると急冷部にチルを生じ易いのでそれ以下
とすることが好ましく、Ｎｉは安定した高硬度及び黒鉛
粒子の微細化に有効な元素であって、２．０％以下では
この効果が不十分であり、逆に５゜０％を越えると黒鉛
粒子の微細化がより進むが一部にマルテンサイトが生じ
て硬度が不均一となるから２．０〜５．０％の範囲が好
ましい。ＣｕはＮｉとともにベイナイト化を安定させ硬
度を安定させるとともに鋳造条件がばらついた場合にも
球状黒鉛粒子を安定して微細化させるに有効な元素であ
り、本発明において重要な役割を演するものである。In the present invention, the main body of the mold is made of spheroidal graphite casting with a special composition as described above, instead of steel, which solves the problem of dimensional accuracy that was seen in molds made of steel, and the corners of the mold. The reason why the composition of the spheroidal graphite cast iron is limited as described above in the present invention is to prevent the occurrence of cracks that had occurred. In order to reduce the volume change during solidification of the molten metal, it is appropriate to use a hypereutectic composition of 3.8% or less. On the other hand, if it is less than 2.5%, the melting point will rise, so it is necessary to raise the pouring temperature, and the volume change will increase, causing large shrinkage during solidification. A range is preferred. In addition, Si is an element that promotes graphitization, and if it is less than 2.0%, graphitization is insufficient, which tends to cause uneven hardness due to chilling and shrinkage cracking due to increased shrinkage; If it exceeds 2.0% to 3.0%, the amount of primary graphite crystallized tends to increase and the graphite becomes coarser, so a range of 2.0 to 3.0% is preferable. Furthermore, Mn is 0
．． If it exceeds 8%, chill will easily occur in the quenching zone, so it is preferable to keep it below that.Ni is an element that is effective in achieving stable high hardness and refining graphite particles, and if it is below 2.0%, this effect will not be achieved. On the other hand, if it exceeds 5.0%, the graphite particles will become finer, but martensite will be formed in some parts and the hardness will become uneven, so a range of 2.0 to 5.0% is preferable. . Coupled with Ni, Cu is an effective element for stabilizing bainitic formation, stabilizing hardness, and stably refining spherical graphite particles even when casting conditions vary, and plays an important role in the present invention. be.
Ｃｕは０．２％以下では上記の効果が不十分であり、１
．５％を越えると析出相が析出しはじめ機械的特性に悪
影響を及ぼすことから０．２〜１．５％の範囲が好まし
い。ＭｏもＮｉとともにベイナイト化に寄与する成分で
あり、０．２％以下ではその効果が不十分であり、１．
０％を越えると一部にマルテンサイトを生ずるから、０
．２％〜１．０％の範囲が好ましい。If Cu is 0.2% or less, the above effects are insufficient, and 1
．． If it exceeds 5%, a precipitated phase will begin to precipitate, which will have an adverse effect on mechanical properties, so a range of 0.2 to 1.5% is preferable. Mo is also a component that contributes to bainite formation along with Ni, and if it is less than 0.2%, the effect is insufficient.1.
If it exceeds 0%, martensite will be formed in some parts, so 0%
．． A range of 2% to 1.0% is preferred.
上記組成の鋳鉄にＭｇｓ Ｃｅ等の球状化剤とフェロシ
リコンのよう・な接種剤を添加し、注湯後例えば７００
℃まで２０℃／分以上の冷却速度で急冷すれば、晶出黒
鉛を微細な球状粒子とすることができる。急冷方法とし
ては例えば熱間ダイス鋼製鋳型のような熱伝導性の良い
鋳型中に注湯後直ちに３ ｋｇ／ｄ以上の圧力で加圧鋳
造し、注湯と鋳型表面との接触を密として放熱を促進さ
せて成形面等の球状黒鉛粒子の微細化を図ることができ
る。また、鋳型中のプラスチック成形面と接する部分に
のみ熱伝導性の良好な鋳型材を用いてプラスチック成形
面における球状黒鉛粒子の粒度分布を制御するようにし
てもよい、このようにして例えばプラスチック成形面に
分布する全球状黒鉛粒子のうち粒径１０μｍ以下のもの
が９０％以上を占め且つ粒径６μ−以下のものが５０％
以上を占めるようにして鋳造することができ、この結果
少くともプラスチック成形面は極めて平滑なものとなっ
て成形されるプラスチック製品は光沢がよく、外観の美
しいものとなる。また、球状黒鋳鉄は鋼材と異なり凝固
時の収縮率が小さいので隅角部に割れを生ずることがな
く、寸法精度良く金型を鋳造することができるものであ
り、特に上記組成の球状黒鉛鋳鉄を用いれば、プラスチ
ック成形面として使用される鋳込面が平滑で寸法精度が
よくしかも硬度及び強度が大きいプラスチック成形用鋳
造金型を安定して得ることができる。A spheroidizing agent such as MgsCe and an inoculant such as ferrosilicon are added to the cast iron having the above composition, and after pouring, for example 700
If the crystallized graphite is rapidly cooled to a temperature of 20° C./min or more at a cooling rate of 20° C./min or more, the crystallized graphite can be formed into fine spherical particles. As a rapid cooling method, immediately after pouring the molten metal into a mold with good thermal conductivity such as a hot die steel mold, pressure casting is carried out at a pressure of 3 kg/d or more to ensure close contact between the poured molten metal and the surface of the mold. By promoting heat dissipation, it is possible to make the spherical graphite particles on the molding surface etc. finer. Furthermore, the particle size distribution of the spherical graphite particles on the plastic molding surface may be controlled by using a mold material with good thermal conductivity only in the part of the mold that comes into contact with the plastic molding surface. Of all the spherical graphite particles distributed on the surface, 90% or more have a particle size of 10 μm or less, and 50% have a particle size of 6 μm or less.
As a result, at least the plastic molding surface becomes extremely smooth, and the molded plastic product has good gloss and a beautiful appearance. In addition, unlike steel, spheroidal black cast iron has a small shrinkage rate during solidification, so it does not cause cracks at the corners, and molds can be cast with good dimensional accuracy. By using this method, it is possible to stably obtain a casting mold for plastic molding in which the casting surface used as the plastic molding surface is smooth, has good dimensional accuracy, and has high hardness and strength.
（実施例）
実施例１
重量比で０３．６％、Ｓｉ２．７％、Ｍｎ Ｏ，０６％
、Ｎｉ３．０％、Ｃｕ １．０％、Ｍｏ Ｏ，５％、残
部がＦｅ及び球状化元素としての０．０２５％のＭｇ、
不可避的不純物の組成の溶湯を熱間ダイス鋼製の鋳型に
注湯後４０ｋｇ／ｃＩ１１の圧力で加圧してプラスチッ
ク成形用鋳造金型を鋳造した。鋳造の際、隅角部に割れ
の生ずることはなく、そのプラスチック成形面には第１
図の金属組織図（２００倍）に示すように全数が７μｍ
以下でその９０％以上が６μｍ以下の微細な球状黒鉛粒
子が晶出し、研摩により橿めて平滑なプラスチック成形
面が得られた。なお、第２図の金属組織図（２００倍）
は、Ｃ３，４％、Ｓｉ ２．７％、Ｍｎ Ｏ，５％、
Ｎｉ４％、Ｍｏ ０．８％、Ｍｇ ０．０４％の組成の
球状黒鉛鋳鉄を一般的なセラミックモールド法により鋳
造して得られた金型の表面付近の＆ｌｌ織を示すもので
あり、粗大化した球状黒鉛粒子が観察される。(Example) Example 1 Weight ratio: 03.6%, Si2.7%, MnO, 06%
, Ni 3.0%, Cu 1.0%, MoO, 5%, balance Fe and 0.025% Mg as a spheroidizing element,
A molten metal having a composition containing unavoidable impurities was poured into a mold made of hot die steel and then pressurized at a pressure of 40 kg/cI11 to form a casting mold for plastic molding. During casting, no cracks occur at the corners, and the plastic molding surface has the first
As shown in the metallographic diagram (200x magnification), the total number is 7 μm.
Below, more than 90% of fine spherical graphite particles of 6 μm or less were crystallized and were polished to obtain a smooth plastic molding surface. In addition, the metallographic diagram in Figure 2 (200x magnification)
are C3, 4%, Si 2.7%, MnO, 5%,
This shows the &ll texture near the surface of a mold obtained by casting spheroidal graphite cast iron with a composition of 4% Ni, 0.8% Mo, and 0.04% Mg by a general ceramic molding method, and it shows coarsening. Spheroidal graphite particles are observed.
また、プラスチック成形面の表面硬度をＡ、Ｂ、Ｃの３
点について３回ずつ測定した結果はＨｒｃでＡ点が（３
７，３６，３７） 、Ｂ点が（３５，３５，３５）、０
点が（３６，３７，３６）であり、Ｈｒｃ ３６±１の
安定した硬度を示した。更に同一の鋳型により直径１０
５寵のキャビティを持つ５個のプラスチック成形用鋳造
金型を鋳造してキャビティ直径の寸法を測定したところ
、ばらつきは（＋０．０２ｍ、±Ｑｍ。In addition, the surface hardness of the plastic molding surface was set to 3: A, B, and C.
The result of measuring each point three times is Hrc and point A is (3
7, 36, 37), point B is (35, 35, 35), 0
The points were (36, 37, 36), indicating stable hardness of Hrc 36±1. Furthermore, the diameter 10 is made using the same mold.
When we cast 5 plastic casting molds with 5 cavities and measured the cavity diameter, the variation was (+0.02m, ±Qm).
０．０１ｍｍ、−０，０１ｎ＋、−０，０２＋ｗ）であ
り、±０．０２鶴以内の極めて高い寸法精度を示した。0.01 mm, -0.01n+, -0.02+w), showing extremely high dimensional accuracy within ±0.02 Tsuru.
更にまた本実施例の鋳造金型の機械的特性を測定したと
ころ、引張強度１１５ ｋｔｒｆ ／ｌａｒ”１．０．
２％耐力６５ｋｇｆ／ｆｉ２、伸び１２％、衝撃値２ｋ
［ｒｆ−ＩＩＩ／−であって、高合金鋼と同等の優れた
特性を示した。Furthermore, when the mechanical properties of the casting mold of this example were measured, the tensile strength was 115 ktrf/lar"1.0.
2% proof stress 65kgf/fi2, elongation 12%, impact value 2k
[rf-III/-, and exhibited excellent properties equivalent to those of high alloy steel.
実施例２
重量比で０３．７％、Ｓｔ ２．６％、Ｍｎ ０．４％
、Ｎｉ ２．５％、Ｃｕ Ｏ，５％、Ｍｏ ０．３％、
残部がＦｅ及び０．０３％のＭｇ、不可避的不純物の組
成の溶湯をもって実施例１と同一条件で同一形状のプラ
スチック成形用鋳造金型を鋳造した。その際に隅角部に
割れが生ずることはなく、プラスチック成形面には全数
が粒径８μｍ以下で６μ−以下のものが７５％以上を占
める微細な球状黒鉛粒子が晶出した。鋳放しの表面粗さ
は３μ請Ｒｍａｘであり、プラスチック成形面を表面研
摩してプラスチック成形を行ったところ、ＳＫＤ −６
１の鋼材製のプラスチック成形金型を用いた場合と同様
に成形品の表面粗さは０．２５μ請Ｒｗａｘであった。Example 2 Weight ratio: 03.7%, St 2.6%, Mn 0.4%
, Ni 2.5%, CuO, 5%, Mo 0.3%,
A casting mold for plastic molding of the same shape was cast under the same conditions as in Example 1 using a molten metal with a composition of unavoidable impurities, the balance being Fe and 0.03% Mg. At this time, no cracks were generated at the corners, and fine spherical graphite particles were crystallized on the plastic molding surface, all of which had a particle size of 8 μm or less, and 75% or more of which were 6 μm or less. The as-cast surface roughness is 3μRmax, and when the plastic molding surface was polished and molded, it was SKD -6.
The surface roughness of the molded product was 0.25 μm Rwax, similar to the case in which the plastic mold made of steel was used in No. 1.
また、このプラスチック成形用金型の寸法精度は１００
訪についてばらつきが±０．０４龍以下であり、従来の
鋼製鋳造金型の寸法精度が１０Ｏｎについて±０．３
ｔｍであったのに対して飛躍的な向上が認められた。In addition, the dimensional accuracy of this plastic mold is 100%.
The dimensional accuracy of conventional steel casting molds is ±0.3 with respect to 10 mm.
A dramatic improvement was observed compared to TM.
（発明の効果）
本発明のプラスチック成形用金型は以上の説明から明ら
かなように、特にＣｕｅｏ、２〜１．５％及びＮｉを２
．０〜５．０％含有する特殊な組成の球状黒鉛鋳鉄から
なるものであって、これによりそのプラスチック成形面
の球状黒鉛粒子を安定して微細化したものであるから、
極めて平滑度の高いプラスチック成形面を得ることがで
き、コア側のみならずキャビティ側に使用した場合にも
表面が平滑で外観の美しいプラスチック製品を成形する
ことができる。しかも、本発明において用いられる球状
黒鉛鋳鉄は凝固時の収縮が小さく、割れが生じないうえ
ＪＩＳ Ｂ ０４０４１２級を達成できる程度に高い寸
法精度を得ることができるもので、高合金鋼を機械加工
したものに匹敵する諸性能を備えたプラスチック成形用
金型を鋳造により容易に得ることができる。このように
本発明は従来の鋼製のプラスチック成形用鋳造金型の問
題点を解消したものであり、産業の発展に寄与するとこ
ろは極めて大である。(Effects of the Invention) As is clear from the above description, the plastic molding mold of the present invention particularly contains 2 to 1.5% Cueo and 2% Ni.
．． It is made of spheroidal graphite cast iron with a special composition containing 0 to 5.0%, which allows the spheroidal graphite particles on the plastic molding surface to be stably refined.
A plastic molding surface with extremely high smoothness can be obtained, and when used not only on the core side but also on the cavity side, a plastic product with a smooth surface and a beautiful appearance can be molded. Moreover, the spheroidal graphite cast iron used in the present invention has a small shrinkage during solidification, does not cause cracks, and can obtain high dimensional accuracy to the extent that it can achieve JIS B 040412 grade, and is made by machining high alloy steel. A mold for plastic molding with performance comparable to that of conventional molds can be easily obtained by casting. As described above, the present invention solves the problems of conventional steel casting molds for plastic molding, and greatly contributes to the development of industry.
第１図は本発明の実施例１のプラスチ・ツク成形用鋳造
金型のプラスチック成形面の金属組織図、第２図は従来
の球状化黒鉛鋳鉄を一般、的なセラミックモールド法で
鋳造して得られた金型表面の金属組織図であり、倍率は
いずれも２００倍である第１ 図
第２ 図Fig. 1 is a metallographic structure diagram of the plastic molding surface of a casting mold for plastic molding according to Example 1 of the present invention, and Fig. 2 is a diagram of the metallographic structure of the plastic molding surface of a casting mold for plastic molding according to Example 1 of the present invention. Figure 1 shows the metallographic structure of the surface of the mold obtained, and the magnification is 200x. Figure 1 Figure 2
Claims (1)
Ｍｎ０．８％以下、Ｎｉ２．０〜５．０％、Ｃｕ０．２
〜１．５％、Ｍｏ０．２〜１．０％、残部がＦｅ及び球
状化元素の組成を有する球状黒鉛鋳鉄からなり、そのプ
ラスチック成形面に微細な球状黒鉛粒子を晶出させたこ
とを特徴とするプラスチック成形用鋳造金型。C2.5-3.8%, Si2.0-3.0% by weight,
Mn 0.8% or less, Ni 2.0-5.0%, Cu 0.2
~1.5% Mo, 0.2~1.0% Mo, and the balance is Fe and spheroidizing elements.It is characterized by having fine spheroidal graphite particles crystallized on its plastic molded surface. Casting mold for plastic molding.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59256980A JPS61136657A (en) | 1984-12-05 | 1984-12-05 | Cast metallic mold for molding plastic |
| KR1019850007576A KR900001097B1 (en) | 1984-12-05 | 1985-10-15 | Casting Molds for Plastic Molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59256980A JPS61136657A (en) | 1984-12-05 | 1984-12-05 | Cast metallic mold for molding plastic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61136657A true JPS61136657A (en) | 1986-06-24 |
| JPH0116295B2 JPH0116295B2 (en) | 1989-03-23 |
Family
ID=17300046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59256980A Granted JPS61136657A (en) | 1984-12-05 | 1984-12-05 | Cast metallic mold for molding plastic |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS61136657A (en) |
| KR (1) | KR900001097B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008254284A (en) * | 2007-04-03 | 2008-10-23 | Nissei Plastics Ind Co | Molding device for injection molding machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030017804A (en) * | 2001-08-23 | 2003-03-04 | 태광실업 주식회사 | Method of manufacture molding for footwear out-sole forming |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4953115A (en) * | 1972-07-12 | 1974-05-23 | ||
| JPS5594459A (en) * | 1978-12-13 | 1980-07-17 | Muehlberger Horst | Spherical graphite cast iron and its manufacture |
| JPS55128563A (en) * | 1979-03-28 | 1980-10-04 | Nissan Motor Co Ltd | Cast iron excellent in wear and seizure resistance |
-
1984
- 1984-12-05 JP JP59256980A patent/JPS61136657A/en active Granted
-
1985
- 1985-10-15 KR KR1019850007576A patent/KR900001097B1/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4953115A (en) * | 1972-07-12 | 1974-05-23 | ||
| JPS5594459A (en) * | 1978-12-13 | 1980-07-17 | Muehlberger Horst | Spherical graphite cast iron and its manufacture |
| JPS55128563A (en) * | 1979-03-28 | 1980-10-04 | Nissan Motor Co Ltd | Cast iron excellent in wear and seizure resistance |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008254284A (en) * | 2007-04-03 | 2008-10-23 | Nissei Plastics Ind Co | Molding device for injection molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0116295B2 (en) | 1989-03-23 |
| KR900001097B1 (en) | 1990-02-26 |
| KR860004714A (en) | 1986-07-11 |
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