JPS6221453A - Hollow casting and its production - Google Patents

Hollow casting and its production

Info

Publication number
JPS6221453A
JPS6221453A JP15792285A JP15792285A JPS6221453A JP S6221453 A JPS6221453 A JP S6221453A JP 15792285 A JP15792285 A JP 15792285A JP 15792285 A JP15792285 A JP 15792285A JP S6221453 A JPS6221453 A JP S6221453A
Authority
JP
Japan
Prior art keywords
casting
hollow
hollow member
molds
mold cavity
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
JP15792285A
Other languages
Japanese (ja)
Inventor
Nobuo Hirose
広瀬　信夫
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.)
Asahi Tec Corp
Original Assignee
Asahi Malleable Iron 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 Asahi Malleable Iron Co Ltd filed Critical Asahi Malleable Iron Co Ltd
Priority to JP15792285A priority Critical patent/JPS6221453A/en
Publication of JPS6221453A publication Critical patent/JPS6221453A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0072—Casting in, on, or around objects which form part of the product for making objects with integrated channels

Abstract

PURPOSE:To improve the joining of a molten metal to he end of a hollow member and to facilitate a knock-out operation in insert casting of the hollow member by connecting and fitting the hollow member into the cavity of casting molds by means of a supporting member thereby eliminating the contact of the aperture of the hollow member with the casting molds. CONSTITUTION:The hollow member 4 is supported in the casting 10 of the casting molds 7, 8 is supported by the sand core supporting member 13 in a manner as not to contact with the molds 7, 8. The molten metal is cast into the cavity 10. Since the member 4 does not contact with the molds 7, 8, the overcooling part in the aperture at the end of the member 4 is prevented and the joining with the molten metal is improved. The quality of the end part is thus made better than in the case in which the conventional hollow member 4 is supported in direct contact with the molds 7, 8. The defects such as the seizure of the member 4 to the molds 7, 8 during the knock-out are eliminated and the knock-out operation is made extremely easy.

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、中空鋳物およびその製法に関するものであ
る。[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Application) This invention relates to a hollow casting and a method for manufacturing the same.

（従来の技術） 一般に中空鋳物、例えばパイプ状の鋳物を得る場合は、
第３図に示すように、あらかじめ上型７および下型８の
内壁９によって形成される鋳型キャビティ１０内に、両
端を中本部１４．１４としたパイプ状の中空部材４を架
は渡して配置した後、鋳物溶湯をその鋳型キャビティ１
０内に注湯してその中空部材４を一体に鋳ぐるみ、第４
図に示すように、その中空部材４の中本部１４．１４を
その中空鋳物１の端面１５．１’５において、切断除去
して中空鋳物１を製造していたものである。(Prior art) Generally, when obtaining a hollow casting, for example a pipe-shaped casting,
As shown in FIG. 3, a pipe-shaped hollow member 4 with central portions 14 and 14 at both ends is placed in a mold cavity 10 formed in advance by the inner walls 9 of an upper mold 7 and a lower mold 8, with a frame extending therebetween. After that, pour the molten metal into the mold cavity 1.
0, the hollow member 4 is integrally cast, and the fourth
As shown in the figure, the hollow casting 1 was produced by cutting and removing the central portion 14.14 of the hollow member 4 at the end face 15.1'5 of the hollow casting 1.

（発明が解決しようとする問題点） しかし、このようにして製造される中空鋳物１は、その
中空部材４の中本部１４．１４をその中空鋳物１の端面
１５．１５において、切断除去しなければならないと共
に、その中空部材４が金属である場合には、鋳物溶湯を
鋳型キャビティ１０内に注湯したときに、その鋳型キャ
ビティ１０の内壁９近傍は溶湯が冷却され易いために、
鋳型キャビティ１０の内壁９近傍の中空部材４において
、その鋳物溶湯と接触する外周面の接合が不完全となり
、その中空部材４の端面１５近傍に押湯を設けたり、簡
単な形状の物であれば、予め長く作っておいて切断をし
なければならない等の問題点があった。(Problems to be Solved by the Invention) However, in the hollow casting 1 manufactured in this manner, the central portion 14.14 of the hollow member 4 must be cut and removed at the end face 15.15 of the hollow casting 1. In addition, when the hollow member 4 is made of metal, when the molten metal is poured into the mold cavity 10, the molten metal is easily cooled near the inner wall 9 of the mold cavity 10.
In the hollow member 4 near the inner wall 9 of the mold cavity 10, the outer circumferential surface that comes into contact with the molten casting metal becomes incompletely joined, and a feeder is provided near the end surface 15 of the hollow member 4, or even if it has a simple shape. For example, there were problems such as having to make a long piece in advance and then cutting it.

この発明は、このような問題点を解決しようとしたもの
で、品質の高い中空鋳物を得ると共にその中空鋳物を容
易に得ることを目的としたものである。This invention is an attempt to solve these problems, and aims to obtain a high-quality hollow casting and to easily obtain the hollow casting.

［発明の構成］ （問題点を解決するための手段） この発明の構成は、鋳物本体の内部から外部に通ずる空
洞部に中空部材を鋳ぐるんだ中空鋳物において、その中
空部材の開口端面を鋳物本体の空洞部開口端面より内方
に配置させることを特徴とした中空鋳物であり、鋳型キ
ャビティ内に中空部材を配置した後その鋳型キャビティ
内に注湯してその中空部材を鋳くるむ中空鋳物の製法に
おいて、その鋳型キャビティの内壁に固定された支持部
材をその中空部材に嵌合支持させるとともに、その中空
部材の開口端面と鋳型キャビティの内壁とを非接触状態
のままその中空部材を鋳ぐるむことを特徴とした中空鋳
物の製法である。[Structure of the Invention] (Means for Solving the Problems) The structure of the invention is such that in a hollow casting in which a hollow member is cast into a cavity communicating from the inside to the outside of the casting body, the open end face of the hollow member is This is a hollow casting characterized by being placed inward from the opening end surface of the cavity of the casting body, and in which a hollow member is placed in a mold cavity and then poured into the mold cavity to encase the hollow member. In the manufacturing method, a support member fixed to the inner wall of the mold cavity is fitted and supported by the hollow member, and the hollow member is cast with the open end face of the hollow member and the inner wall of the mold cavity in a non-contact state. This is a manufacturing method for hollow castings.

（作用） この発明の作用は、中空部材の開口端面を鋳物本体の空
洞部開口端面より内方に配置させた中空鋳物であり、鋳
型キャビティの内壁に固定された支持部材をその中空部
材に嵌合支持させるとともに、その中空部材の開口端面
と鋳型キ中ビティの内壁とを非接触状態のままその中空
部材を鋳ぐるんだ中空鋳物の製法であるので、その中空
部材は、鋳物溶湯を鋳型キャビティ内に注湯したときに
、その溶湯が冷却されに＜＜、鋳物本体に良く密着され
るものである。(Function) The function of the present invention is a hollow casting in which the opening end face of the hollow member is arranged inward from the opening end face of the cavity of the casting body, and a supporting member fixed to the inner wall of the mold cavity is fitted into the hollow member. This is a method for manufacturing hollow castings in which the hollow member is supported and supported, and the hollow member is cast in a non-contact state between the open end face of the hollow member and the inner wall of the mold cavity. When poured into the cavity, the molten metal is cooled and tightly adheres to the casting body.

（実施例） この発明の実施例を図面に基づいて説明する。(Example) Embodiments of the invention will be described based on the drawings.

この発明の中空鋳物１は第１図に示すように、パイプ状
鋳物本体２の内部から外部に通ずる空洞部３に中空部材
４の開口端面５をその空洞部３開目端面６より内方に配
置させたものである。As shown in FIG. 1, a hollow casting 1 of the present invention has an open end surface 5 of a hollow member 4 in a hollow section 3 communicating from the inside to the outside of a pipe-shaped casting body 2 inward from the open end surface 6 of the hollow section 3. This is what was placed.

また、この発明の中空鋳物の製法は第２図に示すように
、上型７および下型８の内壁９によって形成される鋳型
キャビティ１０内の型合わせ面１１に鋳型側中本部１２
．１２を形成し、パイプ状の中空部材４の開口端面５が
その鋳型キャビティ１ｏの内壁９に非接触状態となるよ
うにその鋳型側中本部１２．１２とその中空部材４の両
端との間を砂中子製の支持部材１３．１３によって嵌合
支持した後、その鋳型キャビティ１９内に鋳物溶湯を注
湯し、その中空部材４を鋳物本体２に一体に鋳ぐるみ、
溶湯が凝固した後にその鋳物本体２からその支持部材１
３゜１３を除去するものである。In addition, as shown in FIG. 2, the method for producing a hollow casting of the present invention includes a mold-side central portion 12 on a mold mating surface 11 in a mold cavity 10 formed by the inner wall 9 of the upper mold 7 and the lower mold 8.
．． 12, and the space between the mold-side central portion 12.12 and both ends of the hollow member 4 is formed so that the open end surface 5 of the pipe-shaped hollow member 4 is in a non-contact state with the inner wall 9 of the mold cavity 1o. After being fitted and supported by the support member 13.13 made of sand core, molten casting metal is poured into the mold cavity 19, and the hollow member 4 is integrally cast into the casting body 2,
After the molten metal has solidified, the supporting member 1 is removed from the casting body 2.
3°13 is removed.

［発明の効果］ 以上のようにこの発明の中空鋳物およびその製法は、そ
の中空鋳物の鋳物本体と中空部材との密着性が良いばか
りか、従来のように中本部を中空部材によって一体に形
成したものと比べて、支持部材を砂中子製とすれば、鋳
物本体とのばらし作業が極めて容易にできるものである
。[Effects of the Invention] As described above, the hollow casting of the present invention and the method for manufacturing the same not only have good adhesion between the casting body of the hollow casting and the hollow member, but also have the inner part formed integrally with the hollow member as in the past. If the support member is made of a sand core, it will be much easier to separate it from the cast body.

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

第１．２図はこの発明の実施例を示す縦断面図、第３．
４図は従来例を示す縦断面図である。 ｌ　・・・中空鋳物 ２　・・・鋳物本体 ３　・・・空洞部 ４　・・・中空部材 ５　・・・中空部材の開口端面 ６　・・・空洞部の開口端面 ９　・・・内壁 １０　　・・・鋳型キャビティ １３　　・・・支持部材Fig. 1.2 is a vertical sectional view showing an embodiment of the present invention; Fig. 3.
FIG. 4 is a longitudinal sectional view showing a conventional example. l ... Hollow casting 2 ... Casting body 3 ... Hollow part 4 ... Hollow member 5 ... Opening end surface of hollow member 6 ... Opening end surface of hollow part 9 ... Inner wall 10 ...・Mold cavity 13...Supporting member

Claims (2)

【特許請求の範囲】[Claims] （１）鋳物本体の内部から外部に通ずる空洞部に中空部
材を鋳ぐるんだ中空鋳物において、その中空部材の開口
端面を鋳物本体の空洞部開口端面より内方に配置させる
ことを特徴とした中空鋳物。(1) A hollow casting in which a hollow member is cast in a cavity that communicates from the inside to the outside of the casting body, characterized in that the open end face of the hollow member is arranged inward from the open end face of the cavity of the casting body. Hollow casting. （２）鋳型キャビティ内に中空部材を配置した後その鋳
型キャビティ内に注湯してその中空部材を鋳ぐるむ中空
鋳物の製法において、その鋳型キャビティの内壁に固定
された支持部材をその中空部材に嵌合支持させるととも
に、その中空部材の開口端面と鋳型キャビティの内壁と
を非接触状態のままその中空部材を鋳ぐるむことを特徴
とした中空鋳物の製法。(2) In a hollow casting manufacturing method in which a hollow member is placed in a mold cavity and then poured into the mold cavity to surround the hollow member, the support member fixed to the inner wall of the mold cavity is attached to the hollow member. A method for manufacturing a hollow casting, characterized by fitting and supporting the hollow member, and casting the hollow member while keeping the open end face of the hollow member and the inner wall of a mold cavity in a non-contact state.
JP15792285A 1985-07-17 1985-07-17 Hollow casting and its production Pending JPS6221453A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15792285A JPS6221453A (en) 1985-07-17 1985-07-17 Hollow casting and its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15792285A JPS6221453A (en) 1985-07-17 1985-07-17 Hollow casting and its production

Publications (1)

Publication Number Publication Date
JPS6221453A true JPS6221453A (en) 1987-01-29

Family

ID=15660391

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15792285A Pending JPS6221453A (en) 1985-07-17 1985-07-17 Hollow casting and its production

Country Status (1)

Country Link
JP (1) JPS6221453A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6330036U (en) * 1986-08-12 1988-02-27
EP0827795A2 (en) * 1996-09-04 1998-03-11 Toyota Jidosha Kabushiki Kaisha Method of integrally attaching hollow member to cast product by casting and apparatus therefor
EP1694454A2 (en) * 2003-12-17 2006-08-30 SPX Filtran Corporation Die casting method system and die cast product
JP2010194582A (en) * 2009-02-25 2010-09-09 Toyota Motor Corp Method for producing hollow casting, and method for producing hollow forming member used therein

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6024258A (en) * 1983-07-19 1985-02-06 Hitachi Metals Ltd Casting method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6024258A (en) * 1983-07-19 1985-02-06 Hitachi Metals Ltd Casting method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6330036U (en) * 1986-08-12 1988-02-27
JPH0427228Y2 (en) * 1986-08-12 1992-06-30
EP0827795A2 (en) * 1996-09-04 1998-03-11 Toyota Jidosha Kabushiki Kaisha Method of integrally attaching hollow member to cast product by casting and apparatus therefor
EP0827795A3 (en) * 1996-09-04 1999-01-27 Toyota Jidosha Kabushiki Kaisha Method of integrally attaching hollow member to cast product by casting and apparatus therefor
US5957190A (en) * 1996-09-04 1999-09-28 Toyota Jidosha Kabushiki Kaisha Method of integrally attaching hollow member to cast product by casting and apparatus therefor
EP1694454A2 (en) * 2003-12-17 2006-08-30 SPX Filtran Corporation Die casting method system and die cast product
EP1694454A4 (en) * 2003-12-17 2007-04-04 Spx Corp Die casting method system and die cast product
JP2010194582A (en) * 2009-02-25 2010-09-09 Toyota Motor Corp Method for producing hollow casting, and method for producing hollow forming member used therein

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