JPS6178548A - Mold for producing partially chilled cast iron casting - Google Patents
Mold for producing partially chilled cast iron castingInfo
- Publication number
- JPS6178548A JPS6178548A JP20275984A JP20275984A JPS6178548A JP S6178548 A JPS6178548 A JP S6178548A JP 20275984 A JP20275984 A JP 20275984A JP 20275984 A JP20275984 A JP 20275984A JP S6178548 A JPS6178548 A JP S6178548A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molds
- chilled
- casting
- cast iron
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、部分的にチル（急冷）処理を施して当該部
分の表面硬度を高めた部分チルｌ”鋳鉄鋳物、例えばエ
ンジン用カムシャフト、バルブロッカーアームなどの製
造に使用される部分チルド鋳鉄鋳物製造用鋳型に関する
ものである。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a partially chilled iron casting, for example, a camshaft for an engine, which is partially chilled (quenched) to increase the surface hardness of the part. This invention relates to a mold for manufacturing partially chilled cast iron used in manufacturing valve rocker arms and the like.
（従来技術）
部分チルｌ”鋳鉄鋳物は、その鋳造時に、部分的に硬化
すべき部分の冷却速度を高めてＶｉ敲セメンタイ） （
Ｆｅ３ Ｃ）を析出させることにより硬化させ、他の部
分は冷却速度を抑えて遊離セメンタイト（Ｆｅ３ ｃ）
を含まない加工性あるいは靭性の良好な組織としたもの
であり、鋳造時において上記性質の異なる組織を容易に
得ることかできるので、従来より簡便な部分硬化処理の
一つとして多用されている。(Prior art) Partially chilled iron castings are made by increasing the cooling rate of the parts to be partially hardened during casting.
It is hardened by precipitating Fe3 C), and other parts are hardened by suppressing the cooling rate to form free cementite (Fe3 C).
This method has a structure with good workability or toughness that does not contain any carbon, and it is possible to easily obtain a structure with different properties during casting, so it is often used as one of the simpler partial hardening treatments than in the past.
第５図および第６図は従来の部分チルド鋳鉄鋳物製造用
鋳型を示す縦断面図であって、図に示す鋳型１は、半割
りした一方の分割砂型２と、同しく半割りした他方の分
割砂型３とを組み合わせて構成され、両分側砂型２．３
を型合わせした状態で所定形状例えば図示例ではエンジ
ン用力ムシャフト形状の鋳型空隙４が形成されている。5 and 6 are vertical cross-sectional views showing conventional molds for producing partially chilled iron castings, and the mold 1 shown in the figures has one divided sand mold 2 divided in half and the other divided sand mold 2 in the same half. It is constructed by combining the divided sand mold 3, and the two-sided sand mold 2.3
A mold cavity 4 is formed in a predetermined shape, for example, in the illustrated example, the shape of an engine shaft.
この場合、鋳造時に急冷凝固によって遊離セメンタイト
（Ｆｅ３ Ｃ）を析出させて硬化させようとする部分に
対応する鋳型空隙４には冷し金（チラー）５を設置し、
鋳型空隙４の他の部分は砂型２．３から形成していて、
鋳造時にＭｇｌセメンタイト（Ｆｅ３Ｃ）を析出させな
いようにして加工性や靭性が良好なものとなるようにし
ている。In this case, a chiller 5 is installed in the mold cavity 4 corresponding to the part where free cementite (Fe C) is to be precipitated and hardened by rapid solidification during casting.
The other part of the mold cavity 4 is formed from the sand mold 2.3,
Mgl cementite (Fe3C) is not precipitated during casting to ensure good workability and toughness.
このような従来の鋳型１において、冷し金５を装着する
に際しては、鋳型１を造型したのちに、チルすべき部分
に冷し金５を装着する工程や、冷し金５をあらかじめ模
型の上に載せたのち造型枠内に鋳物砂を投入して造型す
る工程などがある。In such a conventional mold 1, when installing the chiller 5, there is a process of attaching the chiller 5 to the part to be chilled after molding the mold 1, or a step of attaching the chiller 5 to the part of the model in advance. After placing it on top, casting sand is poured into the molding frame to form the mold.
一方、冷し金５としては、例えば第７図に示すよ）に、
チル化すべき部分毎にそれぞれ１個づつの冷し金５を装
着するものと、冷し全装着工数の低教および冷し金装着
時の安定性の向上をはかるために第８図に示すようにチ
ル化すべき部分の２個所以上を同時に急冷することがで
きるようにした冷し金５を装着するもの（例えば、実公
昭５６〜５３９５６号公報）がある。On the other hand, as the chiller 5, for example, as shown in Fig. 7),
One chiller 5 is attached to each part to be chilled, and in order to reduce the number of steps required to install the entire chiller and improve the stability when attaching the chiller, as shown in Fig. 8. There is a device (for example, Japanese Utility Model Publication Nos. 56-53956) that is equipped with a chiller 5 that can rapidly cool two or more parts of the part to be chilled at the same time.
しかしながら、このような従来の部分チルドＰｔ鉄朽物
製造用鋳型では、冷し金の装着に要する工数が大である
こと、鋳造後に鋳型を解体したあと冷し金を回収する工
数が大であること、冷し金の種類が多いときにはそれら
を選別するための工数が大であること、冷し金の装着・
回収・選別に際しての作業者の安全性および作業環境等
に問題が多いこと、冷し金以外の部分は砂型構造となっ
ていたため、鋳造の毎に砂型を造型したり、型ばらし後
に砂を回収したりする工数がかかるなどの欠点があった
。However, with such conventional molds for producing partially chilled Pt iron products, the number of man-hours required to install the chilled metal is large, and the number of man-hours required to recover the chilled metal after disassembling the mold after casting is large. In addition, when there are many types of chillers, it takes a lot of man-hours to sort them, and it is difficult to install and install the chiller.
There were many problems with the safety of workers and the working environment during collection and sorting, and because the parts other than the chilled metal had a sand mold structure, it was necessary to make a sand mold each time casting and collect the sand after disassembling the mold. There were disadvantages such as the amount of man-hours required.
（発明の目的）
この発明は、上述したような従来の欠点を解消するため
になされたもので、鋳型の所要部分への冷し金の装着、
鋳造後の冷し金の回収および選別の作業をなくし、部分
チルド鋳鉄鋳物の製造を精度よく安全でしかも良好な作
業環境で実施することができ、しかも鋳造の毎に造型を
行う必要がない部分チルド鋳鉄鋳物製造用鋳型を提供す
ることを目的としている。(Object of the Invention) This invention was made in order to eliminate the above-mentioned conventional drawbacks, and includes a method for attaching a chiller to a required part of a mold,
Eliminating the work of collecting and sorting chilled metal after casting, it is possible to manufacture partially chilled iron castings with high precision, safety, and in a good working environment, and there is no need to perform molding for each casting. The purpose is to provide a mold for producing chilled iron castings.
（発明の構成）
この発明による鋳鉄鋳物製造用鋳型は、鋳造時に部分的
に凝固冷却速度を太さくしてチル化することにより遊離
セメンタイトを析出させて硬化させ、他の部分は凝固冷
却速度を抑えて遊離セメンタイトを含まない加工性ある
いは靭性等のよい組織とする部分チルト鋳鉄鋳物製造用
鋳型であって、鋳造しようとする鋳鉄鋳物のチル化すべ
き部分に対応する鋳型空隙形成部分の鋳型には熱伝導率
の高い永久鋳型を用いると共に、前記鋳鉄鋳物のチル化
しない加工性あるいは靭性等のよい組織とする部分に対
応する鋳型空隙形成部分の鋳型には熱伝導率の低い永久
鋳型を用い、前記両鋳型を一体構造の型にしたことを特
徴としている。(Structure of the Invention) The mold for producing cast iron castings according to the present invention partially increases the solidification cooling rate during casting to precipitate and harden free cementite, and suppresses the solidification cooling rate in other parts. This is a mold for producing partially tilted cast iron castings, which has a structure with good workability or toughness that does not contain free cementite. A permanent mold with high conductivity is used, and a permanent mold with low thermal conductivity is used for the mold of the mold cavity forming part corresponding to the part where the cast iron casting is to have a good structure such as workability or toughness without chilling. It is characterized by the fact that both molds have an integrated structure.
この発明による部分チルド鋳鉄鋳物製造用鋳型を構成す
る永久鋳型のうち、熱伝導率の高い永久鋳型の素材とし
ては、熱伝導率が０．６ｃａ ｌ／ａｍ ｅ ｓｅｃ以
上のものを用いることができ、熱伝導率の低い永久鋳型
の素材としては、熱伝導率が０ 、２ｃａｌ／ｃｍａ
ｓｅｃ以下のものを用いることができる。このとき、熱
伝導率の高い永久鋳型と熱伝５率の低い永久鋳型の両方
を金属から成形し、例えば、熱伝導率の高い永久鋳型は
適宜水冷構造とすることが可能であり、また熱伝導率の
低い永久鋳型をセラミックスやサーメットなどの断熱効
果の高い材料から形成することもできる。そして、この
場合には靭性の高い金属からなる永久鋳型で背面保持さ
せるようにすることも望ましい。Among the permanent molds constituting the mold for manufacturing partially chilled iron castings according to the present invention, materials with high thermal conductivity of 0.6 cal/am e sec or more can be used for the permanent mold. , as a permanent mold material with low thermal conductivity, thermal conductivity is 0.2 cal/cma.
sec or less can be used. At this time, both a permanent mold with high thermal conductivity and a permanent mold with low thermal conductivity are molded from metal. For example, the permanent mold with high thermal conductivity can be appropriately water-cooled, and Permanent molds with low conductivity can also be formed from highly insulating materials such as ceramics and cermets. In this case, it is also desirable to use a permanent mold made of metal with high toughness to hold the back surface.
また、この発明によるｊ４型を用いて製造される鋳鉄鋳
物としては、普通鋳鉄２球状黒鉛鋳鉄。Further, the iron castings manufactured using the J4 type according to the present invention include ordinary cast iron and 2-spheroidal graphite cast iron.
Ｃ−ＶＭ鉄などがあるが、その種類は特に問わない、そ
して、−例を挙げれば、化学成分が、Ｃ：３．０〜３．
６重量％、Ｓｉ：２．Ｏ〜２，６重量％、Ｃｒ：１．Ｏ
重Ｊ１％以下、Ａｌ：１．０１ｌｉ量％以下、Ｐ：１．
０重量％以下、Ｍｏ：０．３重量％以下のねずみ鋳鉄材
などがある。There is C-VM iron, but the type is not particularly important, and - for example, the chemical composition is C: 3.0 to 3.
6% by weight, Si:2. O~2.6% by weight, Cr: 1. O
Weight J: 1% or less, Al: 1.01li mass% or less, P: 1.
There are gray cast iron materials with Mo: 0% by weight or less, Mo: 0.3% by weight or less, and the like.
（実施例）
第１図および第２図はこの発明の実施例による部分チル
ト鋳鉄持物製造用鋳型を示す図であって５図に示すｊ４
型は、はぼ半割りした一万の分割鋳型１２と、同じくほ
ぼ半割りした他方の分割鋳型１３とを組み合わせて構成
され、両鋳型１２゜１３をシリンター等のクランプによ
って組み合わせ保持した状態では鋳型空隙１４が形成さ
れている。そして、各々の分割鋳型１２．１３において
、鋳造しようとする鋳鉄鋳物のチル化すべき部分に対応
する鋳型空隙１４の形成部分１２ａ。(Embodiment) FIGS. 1 and 2 are diagrams showing a mold for manufacturing partially tilted cast iron fixtures according to an embodiment of the present invention, and are shown in FIG. 5.
The mold is made up of a combination of 10,000 divided molds 12, which are roughly divided in half, and the other divided mold 13, which is also roughly divided in half, and when both molds 12 and 13 are held together with a clamp such as a cylinder, the mold is A void 14 is formed. In each divided mold 12.13, a mold cavity 14 is formed in a portion 12a corresponding to a portion of the cast iron casting to be cast that is to be chilled.
１３ａおよび分割鋳型１２．１３の本体部分１２ｂ、１
３ｂは熱伝導率の高い一体の永久鋳型１５．１６から形
成しであると共に、前記鋳鉄鋳物のチル化しない加工性
あるいは靭性等のよい組織とする部分に対応する鋳型空
隙１４の形成部分１２ｃ、１３ｃは熱伝導率の低い永久
鋳型１７゜１８から形成してあり、各永久鋳型１５と１
７８よひ１６と１８をボルト等の締結具で結合すること
により一体的な構造としている。13a and the main body portion 12b of the split mold 12.13, 1
3b is formed from an integral permanent mold 15, 16 with high thermal conductivity, and a mold cavity 14 forming portion 12c corresponding to a portion of the cast iron casting that does not cause chilling and has a good structure such as workability or toughness; 13c is formed from permanent molds 17°18 with low thermal conductivity, and each permanent mold 15 and 1
78 and 16 and 18 are connected with a fastener such as a bolt to form an integral structure.
鋳造に際しては、熱伝４等の高い永久鋳型１５と熱伝導
率の低い永久鋳型１６とをボルト結合した分割鋳型１２
と、熱伝導率の高い永久鋳型１６と熱伝導率の低い永久
鋳型１８とをボルト結合した分割［１３とを型合わせし
てクランプし、内部に鋳型空隙１４が形成された状態と
する。During casting, a split mold 12 is used, in which a permanent mold 15 with high heat conductivity, such as 4, and a permanent mold 16 with low thermal conductivity are connected by bolts.
A permanent mold 16 with a high thermal conductivity and a permanent mold 18 with a low thermal conductivity are bolted together and are clamped together to form a mold cavity 14 inside.
その後詩型空隙１４内に鋳鉄溶湯を注入すると、ａ伝導
率の高い永久鋳型１５．１６によって形成された鋳型空
隙形成部分１２ａ、１３ａに流れた鋳鉄溶湯は、当該永
久鋳型１５．１６によって急速に冷却されるため遊離セ
メンタイト（Ｆｅ３Ｃ）を析出し、この部分すなわち図
示例の場合にカムノーズ部分の硬度を高くする。一方、
熱伝導率の低い永久鋳型１７．１８によって形成された
鋳型空隙部分ＩＺｃ、１３ｃに流れた鋳鉄溶湯は、１４
１１の熱伝導率が低いため凝固冷却速度が抑制されるの
で、この部分すなわち図示例の場合にカムベース部分、
ジャーナル部分およびカムとジャーナルとの連結部分に
おいては遊離セメンタイト（Ｆｅ３ Ｃ）が析出しない
加工性のよいあるいは靭性の優れた組織となる。After that, when molten cast iron is injected into the poem-shaped cavity 14, the molten cast iron that flows into the mold cavity forming parts 12a and 13a formed by the permanent mold 15.16 with high conductivity is rapidly caused by the permanent mold 15.16. As it is cooled, free cementite (Fe3C) is precipitated, increasing the hardness of this portion, that is, the cam nose portion in the illustrated example. on the other hand,
The molten cast iron flowing into the mold cavity IZc, 13c formed by the permanent mold 17.18 with low thermal conductivity is 14
Since the solidification cooling rate is suppressed due to the low thermal conductivity of No. 11, in the case of the illustrated example, the cam base portion,
In the journal portion and the connection portion between the cam and the journal, free cementite (Fe3C) does not precipitate, resulting in a structure with good workability or excellent toughness.
このようにしてカムシャフトのｊｌ）造を終えたのち、
鋳型１１から製品を離型する。After completing the construction of the camshaft in this way,
The product is released from the mold 11.
（鋳造例）
第１図に示した鋳型１１において、熱伝導率の高い永久
鋳型１５．１６として、Ｃｕ：９８重最％、Ｚｒ：２重
量％の銅合金よりなる金ｆｆ１（熱伝導−ｉＡ： ０
、８ ｃａｌ／ｃｍ ＠５ｅｅ）を使用し、熱伝導率の
低い永久鋳型１７．１８として、Ｃ：０．５重量％以下
、Ｓｉ：１．２重量％以下の鋼材よりなる金型（熱伝導
率０ 、１ ｃａｌ／ｃｍ ＃ ５ｅａ）を使用した。(Casting Example) In the mold 11 shown in FIG. 1, a permanent mold 15.16 with high thermal conductivity is made of gold ff1 (thermal conductivity - iA : 0
, 8 cal/cm @5ee) is used as a permanent mold 17.18 with low thermal conductivity. A rate of 0, 1 cal/cm #5ea) was used.
そして、この場合には熱伝導率の高い永久鋳型１５．１
６の背面を水冷することにより冷却効率を晶めるように
した。In this case, a permanent mold 15.1 with high thermal conductivity is used.
By water-cooling the back of the 6, the cooling efficiency was increased.
また、鋳鉄溶湯としては、次表に示すものを用いた。In addition, as the molten cast iron, those shown in the following table were used.
Ｐｉ鉄組成 （重量％）
そして、このような組成の鋳鉄溶湯をＭ型１１のＨ型空
隙１４内に供ハしたのち凝巳させてカムシャフトを得た
。Pi iron composition (wt%) Then, a molten cast iron having such a composition was supplied into the H-shaped gap 14 of the M-shaped 11 and allowed to solidify to obtain a camshaft.
次に、このようにして得たカムシャフトのマクロ１Ｑｌ
ａｔ−調べたところ、第３図に示す結果が得られ、ミク
ロ組織を調べたところ第４図に示す結果が選られた。Next, the macro 1Ql of the camshaft obtained in this way
When the at-examination was conducted, the results shown in FIG. 3 were obtained, and when the microstructure was examined, the results shown in FIG. 4 were selected.
第３図および第４図に示すように、熱伝導率の高い永久
鋳型１５．１６によって形成された鋳型空隙形成部分１
２ａ、１３ａに接する部分すなわちカムノーズ部分は、
急冷凝固によって遊離セメンタイト（Ｆｅ３Ｃ）が析出
した良好ｉチル組織となっていて硬度の高い耐摩耗性の
良いものとなっており、その他の部分すなわちカムベー
ス部分は遊離セメンタイト（Ｆｅ３ｃ）が含まれない！
ｌｉｌ＆となっていて加工性のよいあるいは靭性の高い
ものとなっている。As shown in FIGS. 3 and 4, a mold cavity forming portion 1 formed by a permanent mold 15, 16 with high thermal conductivity
The part in contact with 2a and 13a, that is, the cam nose part, is
It has a good i-chill structure in which free cementite (Fe3C) is precipitated by rapid solidification, and has high hardness and good wear resistance.The other parts, that is, the cam base part, do not contain free cementite (Fe3c)!
It is lil& and has good workability or high toughness.
（発明の効果）
以上説明してきたように、この発明による部分チ）レド
乃鉄鋳物製造用鋳型は、鋳造時に部分的に凝固冷却速度
を大きくしてチル化することにより遊離セメンタイトを
析出させて硬化させ、他の部分は凝固冷却速度を抑えて
Ｍ敲セメンタイトを含まない加工性あるいは靭性等のよ
い組Ｉａキする鋳鉄鋳物製造用鋳型であって、鋳造しよ
うとする鋳鉄鋳物のチル化すべき部分に対応する鋳型空
隙形成部分の鋳型には熱伝導率の高い永久鋳型を用いる
と共に、前記鋳鉄鋳物のチル化しない加工性あるいは靭
性等のよい組織とする部分に対応する鋳型空隙形成部分
の鋳型には熱伝導率の低い永久鋳型を用い、前記両鋳型
を一体構造の型にしたから、鋳型の所要部分への冷し金
の装着作業が不要となるため、冷し金の製作および保存
、冷し金の装着の際のわずられしい位置決めなどから解
放され、鋳造作業性が著しく改善されると共に、冷し金
を使用しないことから、ｙＩ造後の冷し金の回収作業お
よび選別作業も不要となり、鋳造後の著しくわずられし
い作業からも解放されるうえ、この発明による鋳型を使
用することによって鋳造のつど砂・四を造型する必要が
なく、洗砂の問題もなくなり１部分チルド鋳鉄鋳物の製
造を精度よく安全でしかも良好な作業環境で実施するこ
とができ、鋳型そのものの製作も容易であって、金型部
分は繰り返しの使用が可能であるため、Ｍ鉄鋳物の製造
コストも著しく低下するなど、非常にすぐれた効果をも
たらしうるちのである。(Effects of the Invention) As explained above, the mold for manufacturing partial iron castings according to the present invention precipitates free cementite by partially increasing the solidification cooling rate during casting. A mold for producing cast iron castings that has good workability or toughness by suppressing the solidification cooling rate and does not contain cementite in other parts, and the part to be chilled of the cast iron casting to be cast. A permanent mold with high thermal conductivity is used for the mold of the mold cavity forming part corresponding to the above-mentioned mold cavity forming part corresponding to the part where the cast iron casting does not chill and has good workability or toughness. uses a permanent mold with low thermal conductivity, and the two molds are made into an integral structure, so there is no need to attach the cold mold to the required parts of the mold, making it easier to manufacture, store, and cool the cold mold. It frees you from the troublesome positioning when installing the cold metal, significantly improving casting work efficiency, and since the cold metal is not used, it also makes it easier to collect and sort the cold metal after yI production. In addition, by using the mold of this invention, there is no need to mold sand each time, and the problem of washing sand is eliminated. The production of cast iron castings can be carried out with high precision, safety, and in a good working environment, and the production of the mold itself is easy, and the mold part can be used repeatedly, so the production cost of M iron castings can be reduced. It can bring about very good effects, such as significantly reducing the amount of alcohol.
【図面の簡単な説明】
第１図および！＠２図はこの発明の買施例による部分チ
ルド鋳鉄鋳物製造用鋳型の各々長手方向縦断面図および
カムノーズ形成部分の縦断面図、７Ｊｊ３図および第４
図は第１図の部分チルド鋳鉄鋳物製造用鋳型を使用して
鋳造したカムシャフトのカム部分の各々マクロ金属組ｍ
顕微鏡写真およびミクロ金属組織顕微鏡写真、第５図お
よび第６図は従来の部分チルド鋳鉄鋳物製造用鋳型の各
々の長手方向縦断面図およびカムノーズ形成部分の縦断
面図、第７図および第８図は従来の冷し金の形状例を示
す各々斜面図である。
１１・・・＄−５型。
１２．１３・・・分割鋳型。
１２ａ、１３ａ・・・鋳型空隙形成部分（チル化部分）
１２ｃ 、 １３ｃ・・・鋳型空隙形成部分（非チル化
部分）
１４・・・鋳型空隙、
１５．１６・・・熱伝導率の高い永久鋳型、１７．１８
・・・熱伝導率の低い永久鋳型。
特許出願人 日産自動車株式会社
代理人弁理士 小 塩 豐
第１図
第３１４
（×；
第４図
（Ｘ！ＱＣ，’
第５図[Brief explanation of the drawings] Figure 1 and! Figure @2 is a longitudinal cross-sectional view and a vertical cross-sectional view of a cam nose forming part of a mold for producing partially chilled iron castings according to an embodiment of the present invention, Figures 7Jj3 and 4.
The figure shows each macro metal assembly of the cam part of the camshaft cast using the mold for manufacturing partially chilled iron castings shown in Figure 1.
Micrographs and micrometallic structure micrographs, FIGS. 5 and 6 are longitudinal cross-sectional views of conventional partially chilled iron casting molds, vertical cross-sectional views of the cam nose forming part, and FIGS. 7 and 8. 2A and 2B are perspective views showing examples of the shapes of conventional chillers. 11...$-5 type. 12.13...Divided mold. 12a, 13a... Mold void forming part (chilled part) 12c, 13c... Mold void forming part (non-chilled part) 14... Mold void, 15.16... Permanent with high thermal conductivity mold, 17.18
...Permanent mold with low thermal conductivity. Patent Applicant: Nissan Motor Co., Ltd. Representative Patent Attorney Fumio Oshio Figure 1 Figure 314 (×; Figure 4 (X!QC,' Figure 5)
Claims (1)
化することにより遊離セメンタイトを析出させて硬化さ
せ、他の部分は凝固冷却速度を抑えて遊離セメンタイト
を含まない加工性あるいは靭性等のよい組織とする部分
チルド鋳鉄鋳物製造用鋳型であつて、鋳造しようとする
鋳鉄鋳物のチル化すべき部分に対応する鋳型空隙形成部
分の鋳型には熱伝導率の高い永久鋳型を用いると共に、
前記鋳鉄鋳物のチル化しない加工性あるいは靭性等のよ
い組織とする部分に対応する鋳型空隙形成部分の鋳型に
は熱伝導率の低い永久鋳型を用い、前記両鋳型を一体構
造の型にしたことを特徴とする部分チルド鋳鉄鋳物製造
用鋳型。(1) During casting, the solidification cooling rate is increased in some parts to precipitate and harden free cementite by increasing the solidification cooling rate, and in other parts, the solidification cooling rate is suppressed to improve workability or toughness without free cementite. A mold for producing partially chilled iron castings having a good structure, in which a permanent mold with high thermal conductivity is used for the mold cavity forming part corresponding to the part to be chilled of the cast iron casting to be cast, and
A permanent mold with low thermal conductivity is used as the mold for the mold cavity forming portion corresponding to the portion where the cast iron casting is to have good workability or toughness without chilling, and both molds are formed into an integrated mold. A mold for producing partially chilled iron castings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59202759A JPH0675745B2 (en) | 1984-09-27 | 1984-09-27 | Partial chilled cast iron casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59202759A JPH0675745B2 (en) | 1984-09-27 | 1984-09-27 | Partial chilled cast iron casting mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6178548A true JPS6178548A (en) | 1986-04-22 |
| JPH0675745B2 JPH0675745B2 (en) | 1994-09-28 |
Family
ID=16462697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59202759A Expired - Lifetime JPH0675745B2 (en) | 1984-09-27 | 1984-09-27 | Partial chilled cast iron casting mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0675745B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GR890100808A (en) * | 1988-12-06 | 1991-03-15 | Von Roll Ag | Method and moulding for axles casting |
| JPH07167U (en) * | 1993-05-25 | 1995-01-06 | 赤目・香落・室生観光開発株式会社 | Tableware using a mirror |
| WO2003028923A1 (en) * | 2001-09-27 | 2003-04-10 | Honda Giken Kogyo Kabushiki Kaisha | Cast iron member manufacturing method |
| GB2490299A (en) * | 2010-11-29 | 2012-10-31 | Halliburton Energy Serv Inc | Mould assemblies |
| CN103447497A (en) * | 2012-05-31 | 2013-12-18 | 洛阳洛北重工机械有限公司 | Application method for overlaying cooling iron rings |
| WO2014097924A1 (en) * | 2012-12-19 | 2014-06-26 | いすゞ自動車株式会社 | Manufacturing method for internal combustion engine piston, manufacturing device for internal combustion engine piston, and internal combustion engine |
| US9790744B2 (en) | 2010-11-29 | 2017-10-17 | Halliburton Energy Services, Inc. | Forming objects by infiltrating a printed matrix |
| US10399258B2 (en) | 2010-11-29 | 2019-09-03 | Halliburton Energy Services, Inc. | Heat flow control for molding downhole equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5224924A (en) * | 1975-08-21 | 1977-02-24 | Honda Motor Co Ltd | Mold for casting chill cam shaft |
-
1984
- 1984-09-27 JP JP59202759A patent/JPH0675745B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5224924A (en) * | 1975-08-21 | 1977-02-24 | Honda Motor Co Ltd | Mold for casting chill cam shaft |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GR890100808A (en) * | 1988-12-06 | 1991-03-15 | Von Roll Ag | Method and moulding for axles casting |
| JPH07167U (en) * | 1993-05-25 | 1995-01-06 | 赤目・香落・室生観光開発株式会社 | Tableware using a mirror |
| WO2003028923A1 (en) * | 2001-09-27 | 2003-04-10 | Honda Giken Kogyo Kabushiki Kaisha | Cast iron member manufacturing method |
| US7354549B2 (en) | 2001-09-27 | 2008-04-08 | Honda Giken Kogyo Kabushiki Kaisha | Cast iron member manufacturing method |
| EP2796660A3 (en) * | 2010-11-29 | 2016-08-10 | Halliburton Energy Services, Inc. | Mold assemblies including a mold insertable in a container |
| EP2646641A2 (en) * | 2010-11-29 | 2013-10-09 | Halliburton Energy Services, Inc. | Mold assemblies including a mold insertable in a container |
| GB2490299A (en) * | 2010-11-29 | 2012-10-31 | Halliburton Energy Serv Inc | Mould assemblies |
| US9790744B2 (en) | 2010-11-29 | 2017-10-17 | Halliburton Energy Services, Inc. | Forming objects by infiltrating a printed matrix |
| GB2490299B (en) * | 2010-11-29 | 2018-05-23 | Halliburton Energy Services Inc | Mold assemblies including a mold insertable in a container |
| US10399258B2 (en) | 2010-11-29 | 2019-09-03 | Halliburton Energy Services, Inc. | Heat flow control for molding downhole equipment |
| CN103447497A (en) * | 2012-05-31 | 2013-12-18 | 洛阳洛北重工机械有限公司 | Application method for overlaying cooling iron rings |
| WO2014097924A1 (en) * | 2012-12-19 | 2014-06-26 | いすゞ自動車株式会社 | Manufacturing method for internal combustion engine piston, manufacturing device for internal combustion engine piston, and internal combustion engine |
| JP2014117744A (en) * | 2012-12-19 | 2014-06-30 | Isuzu Motors Ltd | Manufacturing method of piston of internal combustion engine, manufacturing device of piston of internal combustion engine and internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0675745B2 (en) | 1994-09-28 |
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