JPS63144843A - Metallic mold for casting - Google Patents

Metallic mold for casting

Info

Publication number
JPS63144843A
JPS63144843A JP29038986A JP29038986A JPS63144843A JP S63144843 A JPS63144843 A JP S63144843A JP 29038986 A JP29038986 A JP 29038986A JP 29038986 A JP29038986 A JP 29038986A JP S63144843 A JPS63144843 A JP S63144843A
Authority
JP
Japan
Prior art keywords
mold
casting
liner
metallic mold
clearance
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
Application number
JP29038986A
Other languages
Japanese (ja)
Inventor
Iwane Oyama
大山 岩根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP29038986A priority Critical patent/JPS63144843A/en
Publication of JPS63144843A publication Critical patent/JPS63144843A/en
Pending legal-status Critical Current

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  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

PURPOSE:To obtain a metallic mold for casting having high resistance to thermal shock by constituting a ceramics liner to the size at which a specified clearance is provided between the liner and mold plates made of metal at an ordinary temp. and the liner contacts tightly the mold plates at casting temp. CONSTITUTION:This metallic mold for casting is constituted by mounting the stepped liner 3 made of ceramics, attachably and detachably, to the annular upper mold plate 1 and lower mold plate 2 consisting of a heat resisting metal. The metallic mold is so constituted that the specified clearance 5 is provided between the respective mold plates 1, 2 and the liner 3 at the ordinary temp. and the clearance 5 decreases to zero when a molten metal is poured into cavity 5. The damage of the part of the metallic mold susceptible to the thermal shock is thereby decreased and the long-life metallic mold is realized.

Description

【発明の詳細な説明】 〔発明の目的〕 (産業上の利用分野) この発明は、鋳造用金型に関する。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a casting mold.

(従来の技術) 鋳造用金型は、曲げ、絞り加工などに用いられる成形用
金型と異なり、高温高圧にさらされ、かつサーマルショ
ックが加わるために損傷しやすく、金型寿命が短い。そ
のため、従来より、その損傷を受けやすい部分を交換可
能に構成したものがある。
(Prior Art) Casting molds, unlike forming molds used for bending, drawing, etc., are exposed to high temperatures and pressures and are easily damaged due to thermal shock, and have a short mold life. For this reason, there have conventionally been devices in which parts that are susceptible to damage can be replaced.

しかし、損傷を受けやすい部分を交換可能に構成しても
、その損傷が軽減されるわけではなく、損傷に応じて部
品を交換しなければならない。この場合1g造を中止し
、クレーンなどを用いて金型を成形機から取外さなけれ
ばならないので、生産が低下し、また、部品交換に労力
と時間を要する。
However, even if parts that are susceptible to damage are configured to be replaceable, the damage will not be alleviated, and parts must be replaced according to the damage. In this case, 1g production must be stopped and the mold must be removed from the molding machine using a crane or the like, which reduces production and requires labor and time to replace parts.

(発明が解決しようとする問題点) 上記のように鋳造用金型は、高温高圧にさらされ、かつ
サーマルショックが加わるために損傷しやすく、金型寿
命が短い。この金型寿命を長くするために、従来、損傷
しやすい部分を交換可能に形成したものがあるが、この
ように交換可能に形成しても、その損傷部分を交換する
ため、鋳造を中止して金型を成形機から取外さなければ
ならず、そのために、生産が低下し、また、破損部分交
換に労力と時間がかかるという問題点がある。
(Problems to be Solved by the Invention) As described above, casting molds are exposed to high temperatures and pressures and are subject to thermal shock, so they are easily damaged and have a short mold life. In order to extend the life of this mold, some molds have conventionally made parts that are easily damaged so that they can be replaced, but even if they are made to be replaceable, casting must be stopped in order to replace the damaged parts. The mold must be removed from the molding machine, which reduces production and requires labor and time to replace damaged parts.

この発明は、上記問題点を解決するためになされたもの
であり、サーマルショックなどに対して損傷しにくい長
寿命の鋳造用金型を構成することを目的とする。
The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to construct a long-life casting mold that is less likely to be damaged by thermal shock or the like.

〔発明の構成〕[Structure of the invention]

(問題点を解決するための手段) 金属製型板と着脱可能な入れ子とを有する鋳造用金型に
おいて、入れ子をセラミック製とし、かつこの入れ子を
常温で型板との間に一定のクリアランスをもち、このク
リアランスが鋳造温度で零になるように構成した。
(Means for solving the problem) In a casting mold having a metal template and a removable insert, the insert is made of ceramic, and a certain clearance is maintained between the insert and the template at room temperature. The structure was such that this clearance became zero at the casting temperature.

(作 用) 上記のように、金属製型板すこ対して入れ子をセラミッ
ク製とし、かつこの入れ子が常温で型板との間に一定の
クリアランスをもち、このクリアランスは、上記入れ子
が鋳造温度で上記型板に密接する大きさに構成すると、
損傷しやすい部分をこのセラミック製の入れ子で構成す
ることにより、鋳造用金型を長寿命とすることができ、
かつ、型板と入れ子との熱膨張の差の問題も解決できる
(Function) As mentioned above, the nest is made of ceramic in front of the metal template, and this nest has a certain clearance with the template at room temperature, and this clearance is the same as when the nest is at the casting temperature. When configured to a size that closely fits the template above,
By configuring easily damaged parts with ceramic nests, casting molds can have a long lifespan.
Moreover, the problem of the difference in thermal expansion between the template and the nest can be solved.

(実施例) 以下、図面を参照してこの発明を実施例に基づいて説明
する。
(Example) Hereinafter, the present invention will be described based on an example with reference to the drawings.

図面は、モータ用コアを鋳造するための金型の要部構成
を示す断面図である。この金型は、耐熱金属からなる環
状の上型板(1)と同じく耐熱金属からなる環状の下型
板(2)とを備え、この下型板(2)の所定部分に段付
きの貫通孔が、また、この貫通孔と対向する上型板(1
)の対向面に凹部が設けられている。そして、上記貫通
孔には、段付きの入れ子(3)が装着され、その下型板
(2)から突出した先端部が上記上型板(1)の凹部に
係合するようになっている。なお、上記入れ子(3)は
1貫通孔の下端部段差部にねじ止めされた環状の支持金
具(4)により、貫通孔から脱落しないように支持され
ている。なお、(5)は、下型板(2)に形成されたキ
ャビティであり、(6)は、図示しない注入口からこの
キャビティ(5)に溶融金属を注入するときのキャビテ
ィ(5)内空気を脱出させる脱出孔である。
The drawing is a sectional view showing the main part configuration of a mold for casting a motor core. This mold includes an annular upper mold plate (1) made of a heat-resistant metal and an annular lower mold plate (2) also made of a heat-resistant metal, and a predetermined portion of the lower mold plate (2) has stepped through holes. The hole is also formed in the upper mold plate (1) facing the through hole.
) is provided with a recess on the opposing surface. A stepped nest (3) is installed in the through hole, and its tip protruding from the lower mold plate (2) engages with the recess of the upper mold plate (1). . The nest (3) is supported by an annular support fitting (4) screwed to the stepped portion of the lower end of the first through hole so as not to fall out of the through hole. Note that (5) is a cavity formed in the lower mold plate (2), and (6) is the air inside the cavity (5) when molten metal is injected into this cavity (5) from an injection port (not shown). It is an escape hole that allows people to escape.

この鋳造用金型において、上下型板(1)、 (2)は
、熱容量が大きく、かつ放熱面積が大きいので、キャビ
ティ(5)に溶融金属を注入しても、極端な温度上昇を
さけることができるが、入れ子(3)は、下型板(2)
により取囲まれているため、上下型板(1)、 (2)
にくらべて温度上昇が大きく、かつ溶融金属注入時サー
マルショックが加わり、損傷しやすい。
In this casting mold, the upper and lower mold plates (1) and (2) have a large heat capacity and a large heat dissipation area, so even if molten metal is poured into the cavity (5), an extreme temperature rise can be avoided. However, the nest (3) is the lower template (2)
Because it is surrounded by upper and lower templates (1), (2)
The temperature rise is larger than that of molten metal, and thermal shock is applied when pouring molten metal, making it more likely to be damaged.

それ故、この例の入れ子(3)は、これを5iC1Si
3 N4などのセラミックスで形成した。しかも。
Therefore, nesting (3) in this example makes this 5iC1Si
3 Made of ceramic such as N4. Moreover.

金属からなる上下型板(1)、 (2)との熱膨張差を
吸収するために、常温では貫通孔内面と一定のクリアラ
ンスSをもち、鋳造温度で貫通孔内面に密着してこのク
リアランスSがほぼ零になるように構成した。
In order to absorb the difference in thermal expansion between the upper and lower mold plates (1) and (2) made of metal, there is a certain clearance S with the inner surface of the through hole at room temperature, and this clearance S is maintained in close contact with the inner surface of the through hole at the casting temperature. was configured so that it was almost zero.

この貫通孔と入れ子(3)との間のクリアランスSは、
型板の材質、セラミックスの種類、鋳造温度などにより
異なり、小形金型では簡tに零にすることができる。し
かし、大形金型では、予備加熱により零にする必要を生
ずることがある。
The clearance S between this through hole and the nest (3) is
It varies depending on the material of the template, the type of ceramic, the casting temperature, etc., and can be easily reduced to zero for small molds. However, in large molds, it may be necessary to bring the temperature down to zero by preheating.

ところで、上記入れ子(3)のように温度上昇が大きく
、またサーマルショックが加わる部分をセラミックスで
構成すると、このセラミックスが高温耐熱性であること
から、その損傷を軽減することができ、部品交換の期間
の長い長寿命金型とすることができる。したがって、こ
の金型を使用することにより、生産性を向上し、かつ、
成形機から金型を取外して損傷部分を交換する労力と時
間を節約することができる。
By the way, if parts such as nest (3) above, which experience large temperature rises and are subject to thermal shock, are made of ceramic, this damage can be reduced and the parts replaced due to the high temperature resistance of this ceramic. It is possible to create a long-life mold with a long period of time. Therefore, by using this mold, productivity can be improved and
The labor and time required to remove the mold from the molding machine and replace damaged parts can be saved.

〔発明の効果〕〔Effect of the invention〕

金属製型板に対して着脱可能な入れ子をセラミックスで
形成し、かつこの入れ子を、常温で上記型板との間に一
定のクリアランスをもち、このクリアランスが鋳造湿度
でほぼ零になるように本が成すると、型板に取囲まれて
高温になり、かつサーマルショックが加わりやすい部分
の損傷を軽減することができ、部品交換の期間の長い長
寿命金型とすることができる。したがって、この金型を
使用することにより、生産性を向上し、かつ、成形機か
ら金型を取外して損傷部分を交換する労力と時間を節約
することができる。
A nest made of ceramic that can be attached to and removed from a metal template is formed, and this nest is heated so that it has a certain clearance between it and the template at room temperature, and that this clearance becomes almost zero at the casting humidity. When this is achieved, it is possible to reduce damage to the parts surrounded by the mold plate, which are exposed to high temperatures and are susceptible to thermal shock, and it is possible to obtain a long-life mold with a long period of parts replacement. Therefore, by using this mold, productivity can be improved and the labor and time required to remove the mold from the molding machine and replace damaged parts can be saved.

4、 図面ノfrM+13.す説明 図面はこの発明の一実施例であるモータ用コアを鋳造す
るための金型の要部構成を示す断面図である。
4. Drawing frM+13. The explanatory drawing is a sectional view showing the main part structure of a mold for casting a motor core, which is an embodiment of the present invention.

Claims (1)

【特許請求の範囲】 金属製型板と着脱可能な入れ子とを有する鋳造用金型に
おいて、 上記入れ子をセラミック製とし、かつこの入れ子が常温
で上記型板との間に一定のクリアランスをもち、かつ、
このクリアランスは上記入れ子が鋳造温度で上記型板に
密接する大きさに構成されていることを特徴とする鋳造
用金型。
[Scope of Claims] A casting mold having a metal template and a removable insert, wherein the insert is made of ceramic, and the insert has a certain clearance with the template at room temperature, and,
A casting mold characterized in that the clearance is configured to a size that allows the nest to come into close contact with the mold plate at a casting temperature.
JP29038986A 1986-12-08 1986-12-08 Metallic mold for casting Pending JPS63144843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29038986A JPS63144843A (en) 1986-12-08 1986-12-08 Metallic mold for casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29038986A JPS63144843A (en) 1986-12-08 1986-12-08 Metallic mold for casting

Publications (1)

Publication Number Publication Date
JPS63144843A true JPS63144843A (en) 1988-06-17

Family

ID=17755380

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29038986A Pending JPS63144843A (en) 1986-12-08 1986-12-08 Metallic mold for casting

Country Status (1)

Country Link
JP (1) JPS63144843A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02211964A (en) * 1989-02-13 1990-08-23 Aisan Ind Co Ltd Forming die
JPH06134549A (en) * 1992-10-26 1994-05-17 Honda Motor Co Ltd Casting die
JPH06134548A (en) * 1992-10-26 1994-05-17 Honda Motor Co Ltd Casting die
JP2009515708A (en) * 2005-11-16 2009-04-16 ハイドロ アルミニウム マンドル ウント ベルガー ゲゼルシャフト ミット ベシュレンクテル ハフツング Permanent mold and mold insert
JP2018094606A (en) * 2016-12-14 2018-06-21 トヨタ自動車株式会社 Die-casting die

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02211964A (en) * 1989-02-13 1990-08-23 Aisan Ind Co Ltd Forming die
JPH06134549A (en) * 1992-10-26 1994-05-17 Honda Motor Co Ltd Casting die
JPH06134548A (en) * 1992-10-26 1994-05-17 Honda Motor Co Ltd Casting die
JP2009515708A (en) * 2005-11-16 2009-04-16 ハイドロ アルミニウム マンドル ウント ベルガー ゲゼルシャフト ミット ベシュレンクテル ハフツング Permanent mold and mold insert
JP2018094606A (en) * 2016-12-14 2018-06-21 トヨタ自動車株式会社 Die-casting die

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