JPH08117912A - Burner device for heating metal mold - Google Patents

Burner device for heating metal mold

Info

Publication number
JPH08117912A
JPH08117912A JP26397794A JP26397794A JPH08117912A JP H08117912 A JPH08117912 A JP H08117912A JP 26397794 A JP26397794 A JP 26397794A JP 26397794 A JP26397794 A JP 26397794A JP H08117912 A JPH08117912 A JP H08117912A
Authority
JP
Japan
Prior art keywords
mold
burner
burner device
heating
metal fiber
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
JP26397794A
Other languages
Japanese (ja)
Inventor
Yoshihisa Iseda
佳久 伊勢田
Kokichi Takahashi
光吉 高橋
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.)
TAKAMITSU KOGYO KK
Tokyo Gas Co Ltd
Original Assignee
TAKAMITSU KOGYO KK
Tokyo Gas Co Ltd
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 TAKAMITSU KOGYO KK, Tokyo Gas Co Ltd filed Critical TAKAMITSU KOGYO KK
Priority to JP26397794A priority Critical patent/JPH08117912A/en
Publication of JPH08117912A publication Critical patent/JPH08117912A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • B29C33/046—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam using gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/1703—Introducing an auxiliary fluid into the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C2045/7375—Heating or cooling of the mould heating a mould surface by a heated gas
    • B29C2045/7381—Heating or cooling of the mould heating a mould surface by a heated gas heating by gas combustion

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Gas Burners (AREA)
  • Forging (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PURPOSE: To obtain a burner device for heating metal molds capable of rapidly, easily and uniformly heating the metal molds. CONSTITUTION: Metallic fiber mats 3, 3a are spread on both surfaces of a ceramic frame 2 to internally form spaces 6. Previously mixed gases are supplied into these spaces 6 by using a gas supply pipe 10 and thin film-like surface combustion flames are formed on the surfaces of the metallic fiber mats 3, 3a. The upper and lower metal molds are uniformly heated by the radiation heat of these flames. A burner body 1 is provided with a pin hole in which a pin passes in the case of the metal molds with the pin.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、鋳造及び鍜造或いはプ
ラスチック成形用金型を生産準備段階において加熱する
ためのバーナ装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a burner device for heating a die for casting and forging or plastic molding in a production preparation stage.

【０００２】[0002]

【従来の技術】鋳造及び鍜造或いはプラスチック成形用
金型の場合、生産開始頭初は金型が冷えていることか
ら、そのまま生産に入ると精度の悪い製品が製造されて
しまう。そこで、従来は、次のような方法で金型を加熱
している。 ａ．鋳造及び鍜造においては、マシーンに金型を取り付
ける前に、加熱炉内に金型を入れて加熱する。 ｂ．マシーンにセットされた金型をガスバーナを用いて
加熱する。 ｃ．アルミ製品成型用金型等の場合であって、狭小空間
内に湯を流し込んで成形するような場合には、金型が冷
えていると末端まで湯が流れるまでに固化してしまうこ
とから、金型の末端が温まるまで何回かの捨て成形を繰
り返す必要がある。2. Description of the Related Art In the case of a die for casting, forging or plastic molding, since the die is cold at the beginning of the production, if the production is started as it is, a product with low precision is produced. Therefore, conventionally, the mold is heated by the following method. a. In casting and manufacturing, the mold is placed in a heating furnace and heated before the mold is attached to the machine. b. The mold set on the machine is heated using a gas burner. c. In the case of molds for molding aluminum products, etc., when pouring hot water into a narrow space to mold, if the mold is cold, it will solidify by the time the hot water flows to the end, It is necessary to repeat several times of discard molding until the end of the mold becomes warm.

【０００３】[0003]

【発明が解決しようとする課題】しかし、上記従来例に
おいては、次のような欠点がある。 ａ．加熱炉内で加熱する方式の場合、金型を炉内に搬入
したり、取り出したりするのに手間と時間がかかる。 ｂ．ガスバーナを用いて加熱する方式の場合、加熱用バ
ーナにはパイプバーナ等の赤火バーナが使用されるた
め、局部加熱になることが多く、金型が正常温度になる
までに６０〜９０分を要し、又、局部加熱により金型の
表面が酸化して金型の寿命が短くなる。 ｃ．金型が温まるまで捨て成形を行う場合、このための
運転経費がかかると共に材料が無駄になる。However, the above conventional example has the following drawbacks. a. In the case of the method of heating in the heating furnace, it takes time and effort to carry the mold in and out of the furnace. b. In the case of the method of heating using a gas burner, since a red fire burner such as a pipe burner is used for the heating burner, local heating often occurs, and it takes 60 to 90 minutes for the mold to reach a normal temperature. In addition, the surface of the mold is oxidized by the local heating, and the life of the mold is shortened. c. If the waste molding is performed until the mold is warmed up, the operating cost for this and the material is wasted.

【０００４】[0004]

【課題を解決するための手段】上記課題を解決する手段
として提案される本発明に係る金型加熱用バーナの構成
は次のとおりである。 １．任意形状の枠体によって囲まれた空間の両面にメタ
ルファイバーマットを取り付けて成るバーナ本体と、前
記バーナ本体内の空間内に予混合ガスを供給するための
ガス供給管と、から成る金型加熱用バーナ装置。 ２．空間内に仕切板を取り付けて成る前記１記載の金型
加熱用バーナ装置。 ３．金型側に形成されたピンを逃げるためのピン穴をバ
ーナ本体に設けて成る前記１記載の金型加熱用バーナ装
置。 ４．メタルファイバーマットの表面に、金型側の凸部を
逃げるための凹部を形成して成る前記１記載の金型加熱
用バーナ装置。 ５．メタルファイバーマットの表面に、金型側の凹部に
沿う凸部を形成して成る前記１記載の金型加熱用バーナ
装置。 ６．枠体をセラミックで形成して成る前記１、２、３、
４、５記載の金型加熱用バーナ装置。The structure of a mold heating burner according to the present invention, which is proposed as a means for solving the above problems, is as follows. 1. Mold heating consisting of a burner body having metal fiber mats attached to both sides of a space surrounded by a frame body of an arbitrary shape, and a gas supply pipe for supplying a premixed gas into the space inside the burner body. Burner device. 2. The die heating burner apparatus according to the above 1, wherein a partition plate is attached in the space. 3. 2. The burner device for heating a die according to claim 1, wherein the burner body is provided with a pin hole for escaping a pin formed on the die side. 4. 2. The mold heating burner device according to 1 above, wherein a concave portion for escaping the convex portion on the mold side is formed on the surface of the metal fiber mat. 5. 2. The mold heating burner device according to 1 above, wherein a convex portion is formed on the surface of the metal fiber mat along the concave portion on the mold side. 6. 1, 2, 3, wherein the frame body is made of ceramic,
Burner device for heating a mold according to 4, 5.

【０００５】[0005]

【作用】金型は、先にマシーンにセットし、上型と下型
（コアとキャビティー）を接近させ、この中間にバーナ
装置をセットする。バーナ装置は、手で持っていること
も可能であるが、通常は固定具等を用いて金型間に固定
する。この際、上型と下型とが均等に加熱されるよう
に、その位置には注意を払うことが必要である。このよ
うにしてバーナ装置をセットしたのち、ガスコックを開
いてガス供給管からバーナ本体内の空間に予混合ガスを
供給すると、この予混合ガスはメタルファイバーマット
を透過してその表面から流出し、着火によってメタルフ
ァイバーマットの表面に薄膜状の火炎を形成する（表面
燃焼する）。金型は、この燃焼火炎の輻射熱により加熱
される。所定の加熱を終えたところでガスを止め、バー
ナ装置を取り外し、生産に移る。The metal mold is first set in the machine, the upper mold and the lower mold (core and cavity) are brought close to each other, and the burner device is set in the middle. The burner device can be held by hand, but it is usually fixed between the molds using a fixture or the like. At this time, it is necessary to pay attention to the position so that the upper mold and the lower mold are heated evenly. After setting the burner device in this way, when the gas cock is opened and the premixed gas is supplied from the gas supply pipe to the space inside the burner body, this premixed gas permeates the metal fiber mat and flows out from its surface, Upon ignition, a thin film flame is formed on the surface of the metal fiber mat (surface combustion). The mold is heated by the radiant heat of this combustion flame. When the predetermined heating is completed, the gas is stopped, the burner device is removed, and production is started.

【０００６】[0006]

【実施例】【Example】

実施例１ 図１〜図４に、請求項１に記載の本発明の実施例を示
す。符号の１はバーナ本体であって、このバーナ本体１
は長方形のセラミックス製枠体２の上面と下面（左面と
右面）にメタルファイバーマット３、３ａをボルト４と
ナット５で取り付けて内部に空間６を形成した偏平形状
である。６ａは、空間６の中央において、空間６を上下
（左右）に仕切っている仕切板である。なお、実施例の
メタルファイバーマットは、金属繊維を緊密に、多孔質
のパネル状に焼結させたものであって、多孔質を透過し
た予混合ガスをその表面で燃焼させる特質を有する。７
はバーナ本体１内の空間６の中央に仕切壁８、９により
形成した分配室であって、仕切壁８、９には多数のガス
孔８ａ、９ａが設けてある。１０は前記分配室７内に予
混合ガスを供給するためのガス供給管である。上記バー
ナ装置の場合、図５に示すように鍜造用の上型１１と下
型１２間にバーナ本体１部分をセットし、予混合ガスを
ガス供給管１０から分配室７内に供給すると、この予混
合ガスは分配室７の仕切壁８、９に設けられたガス孔８
ａ、９ａから空間６内に流出し、このガスはメタルファ
イバーマット３を透過してその表面に流出する。この流
出したガスに着火が行われると、ガスはメタルファイバ
ーマット３の表面に薄膜状の燃焼火炎を形成する。この
火炎は炎長の殆どない表面燃焼火炎であって、上型１１
と下型１２はこの表面燃焼火炎による輻射熱で加熱され
る。Embodiment 1 FIGS. 1 to 4 show an embodiment of the present invention described in claim 1. Reference numeral 1 is a burner body, and this burner body 1
Is a flat shape in which the metal fiber mats 3 and 3a are attached to the upper surface and the lower surface (left surface and right surface) of the rectangular ceramic frame body 2 with bolts 4 and nuts 5 to form a space 6 inside. 6a is a partition plate that divides the space 6 into upper and lower parts (left and right) in the center of the space 6. The metal fiber mats of the examples are those obtained by closely sintering metal fibers into a porous panel shape, and have the property of burning the premixed gas that has permeated through the porous surface on the surface thereof. 7
Is a distribution chamber formed by partition walls 8 and 9 in the center of the space 6 in the burner body 1, and the partition walls 8 and 9 are provided with a large number of gas holes 8a and 9a. Reference numeral 10 is a gas supply pipe for supplying a premixed gas into the distribution chamber 7. In the case of the burner device, as shown in FIG. 5, when the burner main body 1 part is set between the upper mold 11 and the lower mold 12 for manufacturing, and the premixed gas is supplied from the gas supply pipe 10 into the distribution chamber 7, This premixed gas is supplied through the gas holes 8 provided in the partition walls 8 and 9 of the distribution chamber 7.
The gas flows out into the space 6 from a and 9a, passes through the metal fiber mat 3, and flows out to the surface thereof. When this outflowing gas is ignited, the gas forms a thin film combustion flame on the surface of the metal fiber mat 3. This flame is a surface combustion flame with almost no flame length,
The lower mold 12 is heated by the radiant heat generated by the surface combustion flame.

【０００７】実施例２ 図６〜図８に請求項２に記載の本発明の実施例を示す。
図６〜図８は、金型にピンがある場合に、このピンが貫
通する穴を設けて加熱に支障を来さないように工夫し、
加えてこのピンを含めて加熱できるように構成したバー
ナ装置である。このバーナ装置の場合、上下のメタルフ
ァイバーマット３、３ａ（バーナ本体１）を貫通するピ
ン穴１４…を設け、ガス供給管１０を空間６内中央に長
手方向から挿入し、このガス供給管１０に多数のノズル
孔１０ａを設けた構造である。１３はガス供給管１０を
空間６内で支持しているサポートである。この実施例の
バーナ装置は、図９に示すように、上型１１側にピン１
５が形成されている場合に、このピン１５をピン穴１４
内に貫通させることにより、バーナ本体１を上型１１と
下型１２の中間に位置させてセットし、実施例１の場合
と同じように上型１１と下型１２を加熱し、同時にピン
１５も加熱するものである。なお、上記実施例はピン穴
１４をバーナ本体１（メタルファイバーマット３、３
ａ）に設けているが、金型側に凸部がある場合はメタル
ファイバーマット３又は３ａの表面に凸部を逃れる凹部
を形成し、反対に金型側に凹部がある場合には凸部を形
成して、例えば凹凸が金型側にある場合に、均一加熱を
行うことができるように工夫してもよい。実施例の場
合、バーナ本体１の全体形状は偏平であるが、金型に対
応してこの全体形状は例えば球形を呈することもある。
このように、本発明の場合、バーナ本体の形状は被加熱
金型の形状に合わせて均一加熱ができるように設計され
る。Embodiment 2 FIGS. 6 to 8 show an embodiment of the present invention described in claim 2.
6 to 8 are devised so that when the mold has a pin, a hole through which the pin penetrates is provided so as not to hinder heating,
In addition, it is a burner device configured to be able to heat including this pin. In the case of this burner device, pin holes 14 that penetrate the upper and lower metal fiber mats 3 and 3a (burner body 1) are provided, and the gas supply pipe 10 is inserted in the center of the space 6 from the longitudinal direction. This is a structure in which a large number of nozzle holes 10a are provided. A support 13 supports the gas supply pipe 10 in the space 6. As shown in FIG. 9, the burner device of this embodiment has a pin 1 on the upper die 11 side.
5 is formed, the pin 15 is inserted into the pin hole 14
The burner main body 1 is set in the middle of the upper mold 11 and the lower mold 12 by penetrating the inside, and the upper mold 11 and the lower mold 12 are heated in the same manner as in the first embodiment, and at the same time, the pin 15 It also heats. In the above embodiment, the pin hole 14 is provided in the burner body 1 (metal fiber mats 3, 3).
Although provided in a), when there is a convex portion on the mold side, a concave portion that escapes the convex portion is formed on the surface of the metal fiber mat 3 or 3a, and when there is a concave portion on the mold side, the convex portion is provided. May be formed so that uniform heating can be performed, for example, when the unevenness is on the mold side. In the case of the embodiment, the overall shape of the burner main body 1 is flat, but this overall shape may exhibit a spherical shape, for example, depending on the mold.
As described above, in the case of the present invention, the shape of the burner body is designed so that uniform heating can be performed according to the shape of the heated mold.

【０００８】[0008]

【発明の効果】本発明は以上のように、上型と下型或い
はコアとキャビティーを生産開始前に簡単に、然も均一
に加熱することができるので、次の効果を奏する。 ａ．従来のように金型を炉内で加熱する方式に比較し
て、手間及び時間がかからない。この結果、短時間に生
産準備が終了する。 ｂ．ガスバーナで加熱する方式に比較して均一加熱が可
能である。この結果、特に生産開始直後の製品の精度が
向上する。 ｃ．局部加熱がないために金型の寿命が長くなる。 ｄ．狭小空間を有する金型の場合、金型の末端が温まる
まで捨て成形を行う必要がないので、材料を含めて運転
経費の無駄がない。 ｅ．枠体にセラミックを使用していることにより、過熱
による変形が少なく、よってメタルファイバーマットを
ボルトとナットを用いて周囲で固定している場合に、こ
の固定部分に損傷が発生しない。As described above, according to the present invention, the upper die and the lower die or the core and the cavity can be heated easily and evenly before the start of the production, so that the following effects can be obtained. a. Compared to the conventional method of heating the mold in the furnace, it takes less time and labor. As a result, production preparation is completed in a short time. b. Uniform heating is possible compared to the method of heating with a gas burner. As a result, the accuracy of the product is improved especially immediately after the start of production. c. Mold life is extended due to lack of local heating. d. In the case of a mold having a narrow space, it is not necessary to perform waste molding until the end of the mold is warmed up, so there is no waste of operating costs including materials. e. Since the frame body is made of ceramic, it is less likely to be deformed due to overheating, and therefore, when the metal fiber mat is fixed to the periphery with bolts and nuts, the fixing portion is not damaged.

【図面の簡単な説明】[Brief description of drawings]

【図１】実施例１に記載の発明の実施例を示すバーナ装
置の平面図。FIG. 1 is a plan view of a burner device showing an embodiment of the invention described in Embodiment 1. FIG.

【図２】ガス供給管側から見たバーナ装置の正面図。FIG. 2 is a front view of the burner device viewed from the gas supply pipe side.

【図３】Ａ−Ａ′線断面図。FIG. 3 is a sectional view taken along line AA ′.

【図４】Ｂ−Ｂ′線断面図。FIG. 4 is a sectional view taken along line BB ′.

【図５】バーナ装置を金型にセットして加熱している状
況の説明図。FIG. 5 is an explanatory view of a situation where the burner device is set in a mold and heated.

【図６】実施例２に記載のバーナ装置の平面図。FIG. 6 is a plan view of the burner device according to the second embodiment.

【図７】Ｃ−Ｃ′線断面図。FIG. 7 is a sectional view taken along the line CC ′.

【図８】Ｄ−Ｄ′線断面図。FIG. 8 is a cross-sectional view taken along the line DD ′.

【図９】実施例２のバーナ装置をピン付金型にセットし
て加熱している状況の説明図。FIG. 9 is an explanatory view of a situation in which the burner device of Example 2 is set in a die with a pin and heated.

【符号の説明】[Explanation of symbols]

１ バーナ本体 ２ 枠体 ３、３ａ メタルファイバーマット ４ ボルト ５ ナット ６ 空間 ７ 分配室 ８・９ 仕切壁 ８ａ、９ａ ガス孔 １０ ガス供給管 １０ａ ノズル孔 １１ 上型 １２ 下型 １３ サポート １４ ピン穴 １５ ピン 1 Burner Main Body 2 Frame 3, 3a Metal Fiber Mat 4 Bolt 5 Nut 6 Space 7 Distribution Chamber 8.9 Partition Wall 8a, 9a Gas Hole 10 Gas Supply Pipe 10a Nozzle Hole 11 Upper Die 12 Lower Die 13 Support 14 Pin Hole 15 pin

フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ２３Ｄ 14/14 Ｄ Continuation of front page (51) Int.Cl. 6 Identification number Office reference number FI technical display area F23D 14/14 D

Claims (6)

【特許請求の範囲】[Claims] 【請求項１】 任意形状の枠体によって囲まれた空間の
両面にメタルファイバーマットを取り付けて成るバーナ
本体と、 前記バーナ本体内の空間内に予混合ガスを供給するため
のガス供給管と、 から成る金型加熱用バーナ装置。1. A burner body having metal fiber mats attached to both sides of a space surrounded by a frame of an arbitrary shape, and a gas supply pipe for supplying a premixed gas into the space inside the burner body. Burner device for mold heating. 【請求項２】 空間内に仕切板を取り付けて成る請求項
１記載の金型加熱用バーナ装置。2. The mold heating burner apparatus according to claim 1, wherein a partition plate is attached in the space. 【請求項３】 金型側に形成されたピンを逃げるための
ピン穴をバーナ本体に設けて成る請求項１記載の金型加
熱用バーナ装置。3. The mold heating burner device according to claim 1, wherein the burner body is provided with pin holes for allowing the pins formed on the mold side to escape. 【請求項４】 メタルファイバーマットの表面に、金型
側の凸部を逃げるための凹部を形成して成る請求項１記
載の金型加熱用バーナ装置。4. The mold heating burner device according to claim 1, wherein a concave portion for escaping the convex portion on the mold side is formed on the surface of the metal fiber mat. 【請求項５】 メタルファイバーマットの表面に、金型
側の凹部に沿う凸部を形成して成る請求項１記載の金型
加熱用バーナ装置。5. The mold heating burner device according to claim 1, wherein a convex portion is formed on the surface of the metal fiber mat along the concave portion on the mold side. 【請求項６】 枠体をセラミックで形成して成る請求項
１、２、３、４、５記載の金型加熱用バーナ装置。6. The mold heating burner apparatus according to claim 1, wherein the frame body is formed of ceramic.
JP26397794A 1994-10-27 1994-10-27 Burner device for heating metal mold Pending JPH08117912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26397794A JPH08117912A (en) 1994-10-27 1994-10-27 Burner device for heating metal mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26397794A JPH08117912A (en) 1994-10-27 1994-10-27 Burner device for heating metal mold

Publications (1)

Publication Number Publication Date
JPH08117912A true JPH08117912A (en) 1996-05-14

Family

ID=17396845

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26397794A Pending JPH08117912A (en) 1994-10-27 1994-10-27 Burner device for heating metal mold

Country Status (1)

Country Link
JP (1) JPH08117912A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010274327A (en) * 2009-04-27 2010-12-09 Nishikimi Chuzo Kk Metallic mold for casting of thin cast iron product, production device for thin cast iron product, and method for producing thin spheroidal graphite cast iron product

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010274327A (en) * 2009-04-27 2010-12-09 Nishikimi Chuzo Kk Metallic mold for casting of thin cast iron product, production device for thin cast iron product, and method for producing thin spheroidal graphite cast iron product

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