WO1991003337A1 - Methode de fabrication de moule metallique a tuyau de chauffage/refroidissement incorpore - Google Patents

Methode de fabrication de moule metallique a tuyau de chauffage/refroidissement incorpore Download PDF

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Publication number
WO1991003337A1
WO1991003337A1 PCT/JP1990/001119 JP9001119W WO9103337A1 WO 1991003337 A1 WO1991003337 A1 WO 1991003337A1 JP 9001119 W JP9001119 W JP 9001119W WO 9103337 A1 WO9103337 A1 WO 9103337A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
mold
metal
metal pipe
cooling
Prior art date
Application number
PCT/JP1990/001119
Other languages
English (en)
Japanese (ja)
Inventor
Yoshiharu Waku
Morie Kotani
Hideho Yoshioka
Ryoichi Miyauchi
Original Assignee
Ube Industries, 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 Ube Industries, Ltd. filed Critical Ube Industries, Ltd.
Publication of WO1991003337A1 publication Critical patent/WO1991003337A1/fr

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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

Definitions

  • the present invention relates to a method for manufacturing a mold used in plastic molding, aluminum (A £) die casting, hot working, and the like.
  • the present invention particularly relates to a method for manufacturing a mold having a heating / cooling pipe wrapped around by a manufacturing method.
  • Cooling did not work well, and the cost of drilling required high machining costs, which required a lot of processing time. Furthermore, if a cooling passage cannot be formed to the point where cooling is required, a local temperature rise in the mold during actual operation is likely to occur, which significantly reduces the life of the mold. There was a problem.
  • An object of the present invention is to provide a method of manufacturing a mold having a heating / cooling passage inside a mold by circling a metal pipe by a structure, instead of making a hole in the mold by drilling. That is.
  • the present invention installs a metal pipe of a predetermined shape at a predetermined position in a cylindrical cavity, injects a molten metal into the ⁇ -shaped cavity, cyclizes the metal pipe, and heats and cools the metal pipe.
  • the metal pipe in a method of manufacturing a mold having a passage for a cooling medium, is formed of a multi-layered metal pipe.
  • a through hole is formed in a metal rod or strip, and the metal pipe or the strip is joined to a predetermined shape by welding to form a metal pipe.
  • the cooling pipe is composed of multiple pipes, even if the outer pipe is damaged by the molten metal, the inner pipe will not be damaged, and the intended cooling pipe will be achieved.
  • multiple pipes double pipes, triple pipes and higher multiple pipes, preferably double pipes
  • heat conduction will be reduced. It is good to make multiple tubes.
  • a cooling pipe having a predetermined shape it is preferable to join a plurality of multiple pipes (rods (stripping) with through holes) by welding.
  • a multiple pipe it may be formed by bending instead of welding.
  • the cooling medium is preferably kept flowing (H e, A r, N 2, C 0, gas or water such as air) continuously, by this, to prevent erosion and thermal deformation Prevention is promoted.
  • the outer surface of the pipes is provided with a mesh such as A £, Ni or Ni—P. It is preferable to form a coating layer or to coat graphite or A & powder, and such a surface treatment can control the interface between the molten metal and the pipe well and prevent erosion. This helps to prevent defective fusion.
  • the hole surface is processed (for example, screw processing) so as to increase the inner wall surface area of the hole. Therefore, the cooling efficiency can be improved when a cooling medium is flowed, which contributes to the prevention of erosion when pouring the molten metal, and at the same time, greatly improves the heating and cooling function of the metal and enhances the functionality of the mold. I can do it.
  • FIG. 1 is a schematic cross-sectional view of a mold with a built-in heating / cooling pipe and a mold made by the manufacturing method according to the first embodiment of the present invention
  • FIG. Fig. 3 is a schematic cross-sectional view of a mold with a built-in heating / cooling pipe and a cylic mold manufactured by a manufacturing method.
  • a cooling pipe 10 is a multi-layered pipe composed of an outer pipe 1 and an inner pipe 2 and is arranged in a circling mold 3 having a mold-shaped cavity.
  • the type 3 is accommodated in a cymbal frame 4.
  • the multi-layer pipe (cooling pipe) 10 is prepared by cutting the outer pipe in half, inserting the inner pipe therein, welding the outer pipe, and cutting the pipe to a predetermined length.
  • the cut surface is processed so as to be easily welded (for example, it is polished and finished with a hand cylinder, etc.).
  • the inner pipes 2 are welded to each other, and then the outer pipes 1 are welded to each other so that the multiple pipe 10 is bent.
  • the multi-tube may be formed into a predetermined shape by bending.
  • the cooling pipe 10 is set in the mold 3 and the cooling pipe 10 is arranged in the cavity.
  • the molten metal of the mold is poured into the mold cavity from the gate, and the mold 5 is mirror-fabricated by passing through the cooling pipe 10.
  • a gas such as He, N 2 , Ar, or air or a cooling medium such as cooling water is continuously introduced from the fluid inlet 7 of the inner pipe 2, and the fluid is discharged from the fluid outlet 8.
  • a gas such as He, N 2 , Ar, or air or a cooling medium such as cooling water
  • the outer surface of the outer tube 1 is coated with graphite or A £ powder or melted ⁇ ⁇ £, N i or N
  • surface treatment such as immersion in i-P or the like to form a paint layer, the interface state between the molten metal and the outer tube 1 during manufacturing can be controlled well, and the outer surface of the outer tube 1 can be controlled. Is melted in a molten metal, so that the mold 5 and the outer tube 1 can be completely fused, and there is no poor fusion at the boundary surface as in the conventional case.
  • the mold 5 After cooling the mold 5 thus formed, the mold 5 is separated and the mold with a built-in cooling pipe is taken out.
  • a mold with a built-in cooling pipe is manufactured as shown in Fig. 1 under the following conditions. .
  • Outer pipe Carbon pipe for pressure piping
  • Inner pipe Carbon pipe for piping
  • the outer tube is halved, the inner tube is inserted into the inner tube, and the outer tube is welded to form a double tube.
  • the welded tube is formed into a predetermined shape, and then the A £ layer is formed by melting A ⁇ plating (thickness: 50). Is formed on the outer tube surface.
  • Manufactured heating ⁇ In the mold with a built-in cooling pipe, the heating and cooling pipes are arranged three-dimensionally so as to exhibit the heating or cooling effect. The quality level and mold life are greatly improved.
  • the example of the above-mentioned multiple tube is carbon, which is an iron-based metal in both the outer tube and the inner tube.
  • carbon which is an iron-based metal in both the outer tube and the inner tube.
  • it may be made of a non-ferrous metal having high conductivity such as Cu or copper.
  • the outer tube since the outer tube is in contact with the molten metal in the mold, its melting point must be equal to or higher than that of the molten metal, or high thermal conductivity.
  • Example 2 (in the case of forming a through hole)
  • the cooling pipe 21 is made using a tube opened the transmural hole at drill a round bar steel, the placement of ⁇ sand ⁇ 22 that having a die shape cavity ⁇ ⁇
  • the type 22 is accommodated in a cymbal frame 23.
  • the mold First, it comes into contact with the molten metal of the mold ( ⁇ Prepare a round bar (or square bar or strip) made of ferrous metal such as carbon, which has a relatively high carbon content, and drill through holes. At this time, drill holes so that the thickness of the obtained pipe is 5 to 8 mm. Then, it is cut to a predetermined length and the cut surface is processed so that it can be easily welded (for example, it is polished by a hand grinder). Instead of the long drilling operation, the metal rod may be cut to a desired length and then drilled. The cut pipes are welded at the joints C, D, E, and F to form the cooling pipes 21 in the predetermined cooling passages.
  • the cooling pipe 21 is set in the mold 22 and the cooling pipe 21 is arranged in the cavity. Then, the molten metal of the mold is injected into the mold cavity from the gate, and the mold 24 is formed by circling the cooling pipe 21.
  • a gas such as He, N 2 , Ar, or air, or a cooling medium such as cooling water is continuously supplied from the fluid inlet 25 of the cooling pipe 21.
  • a gas such as He, N 2 , Ar, or air
  • a cooling medium such as cooling water
  • the outer surface of the cooling pipe 1 is coated with graphite or Ai powder, or the molten A £, Ni or N
  • surface treatment such as immersing in i-P or the like to form each of the layers, the melting and the interface state of the pipe 21 can be controlled well.
  • the outer surface is melted with molten metal and the mold 24 and the cooling pipe 21 are completely fused and No defective fusion occurs.
  • the mold 24 thus manufactured is cooled, the mold is separated and the mold with a built-in cooling pipe is taken out.
  • a mold with a built-in cooling pipe is manufactured as shown in Fig. 2 under the following conditions.
  • the thickness of the cooling pipe of the material to be covered is greater than before, so even if the surface melts, it does not melt over the entire thickness. Since the heating and cooling pipes are three-dimensionally arranged in the mold so as to exhibit heating and cooling efficiency, the effect of forced cooling of the mold is large, and the quality level of the molded product and the life of the mold Is greatly improved.
  • the inner surface is Surface treatment to increase the That is, it is preferable to form a screw inside the pipe by threading after drilling the through hole. Due to such an increase in the surface area, the cooling efficiency by the cooling medium flowing into the pipe at the time of squeezing can be greatly improved, and the melting of the pipe can be more reliably prevented. In addition, the heating and cooling function of the mold is greatly improved.
  • cooling pipe of the second embodiment can be replaced by manufacturing the following threaded pipe.
  • S20C round bar of carbon steel
  • This threaded pipe is cut in the same manner as in Example 2 and welded to form a cooling pipe of a predetermined shape. Then, under the same conditions as in the second embodiment, a mold with a built-in heating / cooling pipe is manufactured around the cooling pipe.
  • the mold with a built-in heating / cooling pipe can be easily manufactured by a manufacturing method without melting the pipe that wraps around the pipe and with good adhesion between the mold and the pipe. be able to. Since the mold is forcibly cooled by flowing a heating / cooling medium through the heating / cooling pipe provided at the predetermined position, the heat in and out of the mold can be effectively controlled and removed, not only extending the life of the mold, but also It can also raise the quality level of products made with molds.

Abstract

Méthode de fabrication de moule métallique (5 ou 24) à tuyau de chauffage/refroidissement incorporé tel qu'un tuyau métallique de forme donnée et situé dans une position donnée dans le creux du moule. Ensuite, on doit couler du métal fondu dans ledit creux de manière à envelopper le tuyau métallique, de sorte que ledit tuyau métallique (21) consiste en (A) un tuyau métallique à couches multiples ou (B) en des barres (ou des bandes) métalliques, chaque barre étant dotée d'un trou perçant axialement. Lesdites barres sont soudées les unes aux autres de manière à réaliser une forme spécifiée. Lors du coulage du métal fondu dans le moule (3 ou 22), on fait passer un milieu de refroidissement (gaz ou eau) à travers ledit tuyau métallique (10 ou 21).
PCT/JP1990/001119 1989-09-01 1990-08-31 Methode de fabrication de moule metallique a tuyau de chauffage/refroidissement incorpore WO1991003337A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP22450989 1989-09-01
JP22450889 1989-09-01
JP1/224508 1989-09-01
JP1/224509 1989-09-01

Publications (1)

Publication Number Publication Date
WO1991003337A1 true WO1991003337A1 (fr) 1991-03-21

Family

ID=26526100

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1990/001119 WO1991003337A1 (fr) 1989-09-01 1990-08-31 Methode de fabrication de moule metallique a tuyau de chauffage/refroidissement incorpore

Country Status (1)

Country Link
WO (1) WO1991003337A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2718279A1 (fr) * 1994-03-30 1995-10-06 Electrovac Corps de forme.
US6083335A (en) * 1997-08-18 2000-07-04 3M Innovative Properties Company Paint film assembly with masking film and method of making same
CN102179499A (zh) * 2011-04-15 2011-09-14 吉林大学 一种汽车高强钢冲压件热成形模具制造方法
EP2151875A3 (fr) * 2008-08-07 2013-11-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Procédé et dispositif de fabrication d'un composant doté d'une pièce d'insertion intégrée
JP6669323B1 (ja) * 2019-07-23 2020-03-18 中国電力株式会社 伝熱管及び伝熱管の製造方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5024891B2 (fr) * 1971-08-06 1975-08-19
JPS57500549A (fr) * 1980-05-08 1982-04-01
JPS5927765A (ja) * 1982-08-04 1984-02-14 Toshiba Corp 鋳造用金型およびその製造方法
JPS63101066A (ja) * 1986-10-17 1988-05-06 Toyota Motor Corp 鋳鉄金型の冷却孔の鋳造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5024891B2 (fr) * 1971-08-06 1975-08-19
JPS57500549A (fr) * 1980-05-08 1982-04-01
JPS5927765A (ja) * 1982-08-04 1984-02-14 Toshiba Corp 鋳造用金型およびその製造方法
JPS63101066A (ja) * 1986-10-17 1988-05-06 Toyota Motor Corp 鋳鉄金型の冷却孔の鋳造方法

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2718279A1 (fr) * 1994-03-30 1995-10-06 Electrovac Corps de forme.
US6083335A (en) * 1997-08-18 2000-07-04 3M Innovative Properties Company Paint film assembly with masking film and method of making same
EP2151875A3 (fr) * 2008-08-07 2013-11-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Procédé et dispositif de fabrication d'un composant doté d'une pièce d'insertion intégrée
CN102179499A (zh) * 2011-04-15 2011-09-14 吉林大学 一种汽车高强钢冲压件热成形模具制造方法
CN102179499B (zh) * 2011-04-15 2013-01-23 吉林大学 一种汽车高强钢冲压件热成形模具制造方法
JP6669323B1 (ja) * 2019-07-23 2020-03-18 中国電力株式会社 伝熱管及び伝熱管の製造方法
WO2021014549A1 (fr) * 2019-07-23 2021-01-28 中国電力株式会社 Tuyau de transfert de chaleur et procédé de fabrication d'un tuyau de transfert de chaleur

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