JPH06210437A - Production of casting product - Google Patents

Production of casting product

Info

Publication number
JPH06210437A
JPH06210437A JP687393A JP687393A JPH06210437A JP H06210437 A JPH06210437 A JP H06210437A JP 687393 A JP687393 A JP 687393A JP 687393 A JP687393 A JP 687393A JP H06210437 A JPH06210437 A JP H06210437A
Authority
JP
Japan
Prior art keywords
casting
heat treatment
product
sand
cast product
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
JP687393A
Other languages
Japanese (ja)
Inventor
Akira Ono
昭 小野
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP687393A priority Critical patent/JPH06210437A/en
Publication of JPH06210437A publication Critical patent/JPH06210437A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE:To reduce the energy and time in heat treatment process by eliminating the cooling process for shaking out of a casting product. CONSTITUTION:After a casting product is cast by the metal mold having a sand core in the step S1 casting process, the casting product is not cooled in the heat treatment/shaking process, subjecting to heat treatment with making use of the remained heat of molten metal just after solidification. In this heat treatment process, shaking out of the casting product is simultaneously executed in a heat treatment furnace. Successively, the casting product is finished through the step S3 of sprue cutting process, the step S4 of inspection process and the step S5 of delivery process.

Description

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

【0001】[0001]

【産業上の利用分野】本発明は鋳物製品の製造方法に関
し、特にエンジンのシリンダヘッドのような砂中子を有
する金型で鋳造される鋳物製品の製造方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a casting product, and more particularly to a method for manufacturing a casting product cast by a mold having a sand core such as an engine cylinder head.

【0002】[0002]

【従来の技術】エンジンのシリンダヘッドのような鋳物
製品には、鋳造時に金型の内部に予め砂中子を装着する
ことにより、吸気ポート、排気ポート、ウオータジャケ
ット等の複雑な形状を有する空洞部が形成される。かか
る鋳物製品を製造する際には、鋳造終了後に前記砂中子
を構成していた砂を排出する、所謂砂落し工程が必要と
なる。
2. Description of the Related Art In a casting product such as an engine cylinder head, a cavity having a complicated shape such as an intake port, an exhaust port, a water jacket, etc., is provided by previously mounting a sand core inside the mold during casting. Parts are formed. When manufacturing such a casting product, a so-called sand removing step is required to discharge the sand constituting the sand core after the completion of casting.

【0003】図3は従来の鋳物製品の製造方法を示すフ
ローチャートである。
FIG. 3 is a flow chart showing a conventional casting product manufacturing method.

【0004】先ずステップS01の鋳造工程において、
図4に示す金型を用いてシリンダヘッドWの鋳造を行
う。図4に示すように、金型Dはストーク1を有する下
型2と、摺動自在なコアピン3,4及び摺動自在なエジ
ェクタピン5を有して前記下型2に対して昇降自在な上
型6と、下型2及び上型6に対して水平方向に移動自在
な左右一対のスライドコア7,8と、下型2、上型6及
びスライドコア7,8間に画成されるキャビティ9の内
部に支持されて吸気ポート、排気ポート、ウオータジャ
ケット等を形成するための砂中子10…とを備えてお
り、前記キャビティ9にアルミニューム合金の溶湯を注
入することによりシリンダヘッドWが鋳造される。
First, in the casting process of step S01,
The cylinder head W is cast using the mold shown in FIG. As shown in FIG. 4, the die D has a lower die 2 having a stalk 1, and slidable core pins 3 and 4 and a slidable ejector pin 5, and is movable up and down with respect to the lower die 2. The upper die 6 and the lower die 2 and a pair of left and right slide cores 7 and 8 movable in the horizontal direction with respect to the upper die 6 are defined between the lower die 2, the upper die 6 and the slide cores 7 and 8. It is provided with a sand core 10 supported inside the cavity 9 to form an intake port, an exhaust port, a water jacket, etc., and a cylinder head W is formed by pouring a molten aluminum alloy into the cavity 9. Is cast.

【0005】続くステップS02の冷却搬送工程で、金
型Dから取り出した直後の400℃〜500℃のシリン
ダヘッドWを、オーバーヘッドコンベアで搬送しながら
常温まで冷却し、ステップS03の砂落し工程で、シリ
ンダヘッドWの湯口等に振動ハンマを当接させることに
より、前記砂中子10…を構成する砂を振動で崩してシ
リンダヘッドWの内部から除去する。続くステップS0
4の湯口切断工程で、シリンダヘッドWの表面から突出
する湯口を切断除去し、ステップS05の熱処理工程
で、シリンダヘッドWの硬化や歪み取りを行うべく50
0℃程度の温度による焼き入れ処理及び焼き戻し処理を
行う。そしてステップS06の検査工程でシリンダヘッ
ドWの仕上がり具合を検査し、最後にステップS07の
払い出し工程でシリンダヘッドWを次工程に払い出す。
In the subsequent cooling and conveying step of step S02, the cylinder head W at 400 ° C. to 500 ° C. immediately after being taken out from the mold D is cooled to room temperature while being conveyed by an overhead conveyor, and in the sand removing step of step S03, By bringing a vibrating hammer into contact with the sprue or the like of the cylinder head W, the sand forming the sand cores 10 is broken by vibration and removed from the inside of the cylinder head W. Subsequent step S0
In the sprue cutting process of No. 4, the sprue protruding from the surface of the cylinder head W is cut and removed, and in the heat treatment process of step S05, the cylinder head W is hardened and the strain is removed.
A quenching process and a tempering process are performed at a temperature of about 0 ° C. The finished state of the cylinder head W is inspected in the inspection step of step S06, and finally the cylinder head W is delivered to the next step in the delivery step of step S07.

【0006】[0006]

【発明が解決しようとする課題】しかしながら、従来は
鋳造したシリンダヘッドWの砂落しを行うために冷却搬
送工程で一旦冷却し、砂落しの終了後に熱処理工程でシ
リンダヘッドWを再び加熱しているので、エネルギー及
び時間の節減の面で無駄が多い問題がある。
However, conventionally, in order to remove the sand from the cast cylinder head W, the cylinder head W is once cooled in the cooling and conveying step, and after completion of the sand removal, the cylinder head W is heated again in the heat treatment step. Therefore, there is a problem that there is much waste in terms of saving energy and time.

【0007】本発明は前述の事情に鑑みてなされたもの
で、鋳物製品の砂落しのための冷却工程を廃止して、熱
処理工程におけるエネルギー及び時間の節減を図ること
を目的とする。
The present invention has been made in view of the above circumstances, and it is an object of the present invention to eliminate the cooling step for removing sand from a cast product and save energy and time in the heat treatment step.

【0008】[0008]

【課題を解決するための手段】上記目的を達成するため
に、本発明の鋳物製品の製造方法は、砂中子を有する金
型によって鋳物製品を鋳造する鋳造工程と、鋳造工程を
経た鋳物製品の砂落しを行うとともに、該鋳物製品の焼
き入れ及び焼き戻しを行う熱処理砂落し工程と、熱処理
砂落し工程を経た鋳物製品の湯口を切断する湯口切断工
程と、湯口切断工程を経た鋳物製品の仕上がり具合を検
査する検査工程と、検査工程を経た鋳物製品を払い出す
払い出し工程とからなることを第1の特徴とする。
In order to achieve the above object, a method for manufacturing a casting product according to the present invention is a casting process for casting a casting product with a mold having a sand core, and a casting product after the casting process. The heat treatment sand removing step of quenching and tempering the cast product, and the sprue cutting step of cutting the sprue of the cast product that has undergone the heat treatment sand removing step, and the cast product that has gone through the sprue cutting step. The first feature is that it includes an inspection step for inspecting the finish condition and a payout step for paying out a cast product that has undergone the inspection step.

【0009】また本発明の鋳物製品の製造方法は、砂中
子を有する金型によって鋳物製品を鋳造する鋳造工程
と、鋳造工程を経た鋳物製品の焼き入れ及び焼き戻しを
行う熱処理工程と、熱処理工程を経た鋳物製品の砂落し
を行う砂落し工程と、砂落し工程を経た鋳物製品の湯口
を切断する湯口切断工程と、湯口切断工程を経た鋳物製
品の仕上がり具合を検査する検査工程と、検査工程を経
た鋳物製品を払い出す払い出し工程とからなることを第
2の特徴とする。
The method of manufacturing a casting product according to the present invention comprises a casting step of casting the casting product with a mold having a sand core, a heat treatment step of quenching and tempering the casting product that has undergone the casting step, and a heat treatment. Sand removal process to remove sand from the cast product that has gone through the process, sprue cutting process to cut the sprue of the cast product that has gone through the sand removal process, and inspection process to inspect the finish of the cast product that has gone through the sprue cutting process A second feature is that it comprises a payout process for paying out a cast product that has gone through the process.

【0010】[0010]

【実施例】以下、図面に基づいて本発明の実施例を説明
する。
Embodiments of the present invention will be described below with reference to the drawings.

【0011】図1は本発明の第1実施例のフローチャー
トを示すものである。
FIG. 1 shows a flow chart of the first embodiment of the present invention.

【0012】先ずステップS1の鋳造工程で、図4に示
す金型Dを用いてシリンダヘッドWを鋳造する。続くス
テップS2の熱処理砂落し工程では、シリンダヘッドW
を冷却することなく、固化直後の溶湯の余熱(400℃
〜500℃)を利用して熱処理炉で焼き入れ処理及び焼
き戻し処理を行うと同時に砂落しを行う。この砂落し
は、表面の粘結剤が溶湯の熱で崩壊する性質の砂中子1
0…を用い、前記熱処理炉の内部で音波によりシリンダ
ヘッドWに振動を与えることにより行うことができる。
First, in the casting step of step S1, the cylinder head W is cast using the mold D shown in FIG. In the subsequent heat treatment sand removal step of step S2, the cylinder head W
The residual heat of the molten metal immediately after solidification (400 ° C
(-500 ° C) is used to perform quenching and tempering in a heat treatment furnace, and at the same time, sand removal is performed. This sand remover is a sand core 1 in which the binder on the surface is disintegrated by the heat of the molten metal.
It is possible to perform this by vibrating the cylinder head W with a sound wave inside the heat treatment furnace.

【0013】上述のように、鋳造したシリンダヘッドW
を冷却することなく熱処理を行っているので、熱処理に
要するエネルギーを節減することが可能となるばかり
か、シリンダヘッドWを冷却及び再加熱するための時間
を節減することができる。しかも、熱処理及び砂落しを
炉内で同時に行うことにより、一層の時間節減が可能と
なる。
Cylinder head W cast as described above
Since the heat treatment is performed without cooling, it is possible not only to save the energy required for the heat treatment, but also to save the time for cooling and reheating the cylinder head W. Moreover, by performing the heat treatment and the sand removal at the same time in the furnace, it is possible to further save time.

【0014】而して、ステップS3の湯口切断工程、ス
テップS4の検査工程及びステップS5の払い出し工程
を経てシリンダヘッドWを完成する。
Thus, the cylinder head W is completed through the sprue cutting process of step S3, the inspection process of step S4, and the payout process of step S5.

【0015】図2は本発明の第2実施例のフローチャー
トを示すものである。
FIG. 2 shows a flow chart of the second embodiment of the present invention.

【0016】先の第1実施例ではステップS2で熱処理
及び砂落しを同時に行っているのに対して、この第2実
施例では前記ステップS2をステップS2aの熱処理工
程とステップS2bの砂落し工程とに分割している。従
って、ステップS2aでシリンダヘッドWを熱処理した
後、ステップS2bで熱処理炉から取り出したシリンダ
ヘッドWの砂落しを行う。
In the first embodiment, the heat treatment and the sand removal are performed at the same time in step S2, whereas in the second embodiment, the step S2 includes the heat treatment step of step S2a and the sand removal step of step S2b. Is divided into Therefore, after heat treating the cylinder head W in step S2a, sand removal of the cylinder head W taken out of the heat treatment furnace is performed in step S2b.

【0017】この実施例においても、ステップS1の鋳
造工程で鋳造したシリンダヘッドWを冷却することなく
熱処理を行うことにより、熱処理に要するエネルギーと
時間を節減することが可能となる。
Also in this embodiment, it is possible to save energy and time required for the heat treatment by performing the heat treatment without cooling the cylinder head W cast in the casting process of step S1.

【0018】以上、本発明の実施例を詳述したが、本発
明は前記実施例に限定されるものでなく、種々の設計変
更を行うことが可能である。
Although the embodiment of the present invention has been described in detail above, the present invention is not limited to the above embodiment, and various design changes can be made.

【0019】[0019]

【発明の効果】以上のように本発明の第1又は第2の特
徴によれば、鋳造後の鋳物製品を冷却することなく、固
化した溶湯の余熱をそのまま利用して熱処理を行ってい
るので、鋳物製品の熱処理に要するエネルギーと時間と
を節減することができる。特に本発明の第1の特徴によ
れば、熱処理と砂落しとを同時に完了することができる
ので、処理時間を一層短縮することができる。
As described above, according to the first or second feature of the present invention, the heat treatment is performed by utilizing the residual heat of the solidified molten metal as it is without cooling the cast product after casting. It is possible to save energy and time required for heat treatment of a cast product. Particularly, according to the first feature of the present invention, the heat treatment and the sand removal can be completed at the same time, so that the treatment time can be further shortened.

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

【図1】本発明の第1実施例による鋳物製品の製造方法
を示すフローチャート
FIG. 1 is a flowchart showing a method for manufacturing a casting product according to the first embodiment of the present invention.

【図2】本発明の第2実施例による鋳物製品の製造方法
を示すフローチャート
FIG. 2 is a flowchart showing a method for manufacturing a casting product according to the second embodiment of the present invention.

【図3】従来の鋳物製品の製造方法を示すフローチャー
FIG. 3 is a flowchart showing a conventional method for manufacturing a cast product.

【図4】金型の断面図FIG. 4 is a sectional view of a mold.

【符号の説明】[Explanation of symbols]

S1 鋳造工程 S2 熱処理砂落し工程 S2a 熱処理工程 S2b 砂落し工程 S3 湯口切断工程 S4 検査工程 S5 払い出し工程 D 金型 W シリンダヘッド(鋳物製品) 10 砂中子 S1 Casting process S2 Heat treatment sand removal process S2a Heat treatment process S2b Sand removal process S3 Gate cutting process S4 Inspection process S5 Dispensing process D Mold W Cylinder head (cast product) 10 Sand core

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 砂中子(10)を有する金型(D)によ
って鋳物製品(W)を鋳造する鋳造工程(S1)と、鋳
造工程(S1)を経た鋳物製品(W)の砂落しを行うと
ともに、該鋳物製品(W)の焼き入れ及び焼き戻しを行
う熱処理砂落し工程(S2)と、熱処理砂落し工程(S
2)を経た鋳物製品(W)の湯口を切断する湯口切断工
程(S3)と、湯口切断工程(S3)を経た鋳物製品
(W)の仕上がり具合を検査する検査工程(S4)と、
検査工程(S4)を経た鋳物製品(W)を払い出す払い
出し工程(S5)とからなる、鋳物製品の製造方法。
1. A casting step (S1) for casting a casting product (W) with a mold (D) having a sand core (10), and a sand removal of the casting product (W) after the casting step (S1). A heat treatment sand removing step (S2) of performing quenching and tempering of the cast product (W) and a heat treatment sand removing step (S)
2), a sprue cutting step (S3) for cutting the sprue of the cast product (W), and an inspection step (S4) for inspecting the finish of the cast product (W) that has undergone the sprue cutting step (S3),
A method of manufacturing a cast product, comprising: a payout process (S5) for paying out the cast product (W) that has undergone the inspection process (S4).
【請求項2】 砂中子(10)を有する金型(D)によ
って鋳物製品(W)を鋳造する鋳造工程(S1)と、鋳
造工程(S1)を経た鋳物製品(W)の焼き入れ及び焼
き戻しを行う熱処理工程(S2a)と、熱処理工程(S
2a)を経た鋳物製品(W)の砂落しを行う砂落し工程
(S2b)と、砂落し工程(S2b)を経た鋳物製品
(W)の湯口を切断する湯口切断工程(S3)と、湯口
切断工程(S3)を経た鋳物製品(W)の仕上がり具合
を検査する検査工程(S4)と、検査工程(S4)を経
た鋳物製品(W)を払い出す払い出し工程(S5)とか
らなる、鋳物製品の製造方法。
2. A casting step (S1) for casting a casting product (W) with a mold (D) having a sand core (10), and quenching of the casting product (W) after the casting step (S1). The heat treatment step (S2a) for tempering and the heat treatment step (S
2a) sand removal step (S2b) for sand removal of the cast product (W), sprue cutting step (S3) for cutting the sprue of the cast product (W) that has undergone the sand removal step (S2b), and sprue cutting Cast product comprising an inspection step (S4) for inspecting the finished condition of the cast product (W) that has undergone the step (S3) and a payout step (S5) for delivering the cast product (W) that has undergone the inspection step (S4). Manufacturing method.
JP687393A 1993-01-19 1993-01-19 Production of casting product Pending JPH06210437A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP687393A JPH06210437A (en) 1993-01-19 1993-01-19 Production of casting product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP687393A JPH06210437A (en) 1993-01-19 1993-01-19 Production of casting product

Publications (1)

Publication Number Publication Date
JPH06210437A true JPH06210437A (en) 1994-08-02

Family

ID=11650351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP687393A Pending JPH06210437A (en) 1993-01-19 1993-01-19 Production of casting product

Country Status (1)

Country Link
JP (1) JPH06210437A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010507487A (en) * 2006-10-23 2010-03-11 ベーデーヴェー テヒノロジーズ ゲーエムベーハー Method and unit for the production of cast parts
CN104874775A (en) * 2015-04-23 2015-09-02 共享铸钢有限公司 Rapid cleaning method for large martensitic stainless steel castings
CN108723341A (en) * 2018-04-24 2018-11-02 上柴动力海安有限公司 A kind of body casting cleaning conveying production technology of environment-friendly type diesel engine for automobile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010507487A (en) * 2006-10-23 2010-03-11 ベーデーヴェー テヒノロジーズ ゲーエムベーハー Method and unit for the production of cast parts
CN104874775A (en) * 2015-04-23 2015-09-02 共享铸钢有限公司 Rapid cleaning method for large martensitic stainless steel castings
CN108723341A (en) * 2018-04-24 2018-11-02 上柴动力海安有限公司 A kind of body casting cleaning conveying production technology of environment-friendly type diesel engine for automobile

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