JP2005199347A - Sleeve for die casting - Google Patents
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- JP2005199347A JP2005199347A JP2004233032A JP2004233032A JP2005199347A JP 2005199347 A JP2005199347 A JP 2005199347A JP 2004233032 A JP2004233032 A JP 2004233032A JP 2004233032 A JP2004233032 A JP 2004233032A JP 2005199347 A JP2005199347 A JP 2005199347A
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Abstract
Description
本発明は、アルミニウム合金などの非鉄金属用のダイカストマシンにおける溶融金属射出装置を構成するダイカスト用スリーブに関し、特に金属製の外筒の内にセラミックス製の内筒を焼嵌めた複合構造のダイカスト用スリーブに関する。また、金属材料からなるアウタースリーブの内に、金属材料からなるスリーブを設けたダイカスト用スリーブに関する。 The present invention relates to a die casting sleeve constituting a molten metal injection device in a die casting machine for non-ferrous metals such as aluminum alloys, and more particularly to a die casting having a composite structure in which a ceramic inner cylinder is shrink-fitted in a metal outer cylinder. Regarding the sleeve. The present invention also relates to a die casting sleeve in which a sleeve made of a metal material is provided in an outer sleeve made of a metal material.
ダイカストマシンの射出装置に装着されるダイカスト用スリーブとして、金属製の外筒の内面にセラミックス製の内筒を焼嵌めた複合構造のものが種々提案されている。 As a die casting sleeve to be mounted on an injection device of a die casting machine, various types of composite structures have been proposed in which a ceramic inner cylinder is shrink-fitted on the inner surface of a metal outer cylinder.
例えば特許文献１には、Ｆｅ−Ｎｉ−Ｃｏ系などの低熱膨張性金属材料からなる外筒内に、窒化ケイ素やサイアロンのセラミックス材料からなる内筒を焼嵌めて、外筒および内筒の金型側の先端面と外筒の端部外周に当接するように熱間金型用鋼からなる補強リングを固定するとともに、補強リングの金型側の端部外周に嵌合部を設け、その嵌合部に冷媒が循環する鋼管からなる冷却リングを固定したダイカスト用スリーブが記載されている。 For example, in Patent Document 1, an inner cylinder made of a ceramic material such as silicon nitride or sialon is shrink-fitted in an outer cylinder made of a low thermal expansion metal material such as Fe-Ni-Co, and gold for the outer cylinder and the inner cylinder. A reinforcing ring made of hot mold steel is fixed so as to contact the tip side of the mold side and the outer periphery of the end of the outer cylinder, and a fitting portion is provided on the outer periphery of the end of the reinforcing ring on the mold side. A die casting sleeve is described in which a cooling ring made of a steel pipe in which a coolant circulates in a fitting portion is fixed.
図２は、従来のダイカスト用スリーブの金型側先端部の概略断面図を示す。図２において、ダイカスト用スリーブは、金属製の外筒１の内面に、セラミックス材料の内筒２を焼嵌めて構成される。ダイカスト鋳造の際、内筒２の中空部３に溶融金属が供給される。 FIG. 2 is a schematic cross-sectional view of a die side tip of a conventional die casting sleeve. In FIG. 2, the die-casting sleeve is configured by shrink fitting a ceramic material inner cylinder 2 on the inner surface of a metal outer cylinder 1. During die casting, molten metal is supplied to the hollow portion 3 of the inner cylinder 2.
ダイカスト用スリーブの金型側先端部の外周には金属製の補強リング４が設けられる。補強リング４は、外筒１および内筒２の金型側の先端面と外筒１の先端部外周に当接するように固定される。補強リング４の外周には冷却用の環状の溝部７が形成されている。そして、冷却用の溝部７の全体を覆うように、金属製のリング状のカバー部材８の周縁部を補強リング４に密に溶接Ｗして固定する。これにより、冷却水が循環する中空の冷却路６が形成される。補強リング４の外部から冷却路６に通じる冷却水の入水口５および排水口を設け、冷却路６の内部に仕切り壁を設けることにより、冷却水が冷却路６の内部を循環できるようにする。 A metal reinforcing ring 4 is provided on the outer periphery of the die-side tip of the die casting sleeve. The reinforcing ring 4 is fixed so as to come into contact with the die side end surfaces of the outer cylinder 1 and the inner cylinder 2 and the outer periphery of the distal end portion of the outer cylinder 1. An annular groove 7 for cooling is formed on the outer periphery of the reinforcing ring 4. Then, the periphery of the metal ring-shaped cover member 8 is tightly welded and fixed to the reinforcing ring 4 so as to cover the entire cooling groove 7. Thereby, the hollow cooling path 6 through which cooling water circulates is formed. By providing a cooling water inlet 5 and a drain outlet that lead to the cooling path 6 from the outside of the reinforcing ring 4, and providing a partition wall inside the cooling path 6, the cooling water can circulate inside the cooling path 6. .
従来のダイカスト用スリーブでは、補強リングに熱間金型用鋼を使用し、カバー部材に機械構造用炭素鋼管を使用していた。そこで、スリーブ使用中に補強リングの内面が溶融金属に曝されて、補強リング全体が高温に至ったとき、直接に冷却水に触れているカバー部材に比べて補強リングの方が大きく熱膨張していた。このため、カバー部材が引っ張られ、カバー部材の溶接Ｗ部に割れなどを生じ、冷却水が漏れやすくなるという問題があった。 In a conventional die casting sleeve, hot mold steel is used for the reinforcing ring and a carbon steel pipe for machine structure is used for the cover member. Therefore, when the inner surface of the reinforcing ring is exposed to the molten metal while the sleeve is in use, and the entire reinforcing ring reaches a high temperature, the reinforcing ring expands more greatly than the cover member that is in direct contact with the cooling water. It was. For this reason, there was a problem that the cover member is pulled, a crack or the like occurs in the welded W portion of the cover member, and the cooling water easily leaks.
したがって、本発明の目的は、上記従来技術の問題に鑑みてなされたものであり、スリーブ使用中にスリーブの先端部が高温に至った場合でも、冷却用の溝部を覆うカバー部材の溶接部が割れることを防止できるダイカスト用スリーブを提供することである Accordingly, an object of the present invention is made in view of the above-described problems of the prior art. Even when the tip of the sleeve reaches a high temperature during use of the sleeve, the welded portion of the cover member that covers the cooling groove is provided. It is to provide a die casting sleeve that can prevent cracking.
本発明のダイカスト用スリーブは、金属材料からなる外筒の内に、セラミックス系材料からなる内筒を焼嵌めたダイカスト用スリーブであって、外筒の金型側の先端部外周に固定した金属製の補強リングと、補強リングの外周に形成した冷却用の環状の溝部を覆う金属製のリング状のカバー部材とを有し、補強リングに溶接固定するカバー部材に波状の伸縮部を形成したことを特徴とする。 The die-casting sleeve of the present invention is a die-casting sleeve in which an inner cylinder made of a ceramic material is shrink-fitted in an outer cylinder made of a metal material, and is a metal fixed to the outer periphery of the tip of the outer cylinder on the mold side A reinforcing ring made of metal and a metal ring-shaped cover member that covers an annular groove for cooling formed on the outer periphery of the reinforcing ring, and a wave-like expansion and contraction portion is formed on the cover member that is welded and fixed to the reinforcing ring It is characterized by that.
また、第２の本発明のダイカスト用スリーブは、アウタースリーブの内に、金属材料からなるスリーブを設けたダイカスト用スリーブであって、スリーブの金型側の先端部外周に形成した冷却用の環状の溝部を覆う金属製のリング状のカバー部材を有し、スリーブに溶接固定するカバー部材に波状の伸縮部を形成したことを特徴とする。 A die casting sleeve according to a second aspect of the present invention is a die casting sleeve in which a sleeve made of a metal material is provided in an outer sleeve, and is a cooling ring formed on the outer periphery of a tip portion on the mold side of the sleeve. It has a metal ring-shaped cover member covering the groove portion, and a wave-like expansion and contraction portion is formed on the cover member welded to the sleeve.
さらに、第３の本発明のダイカスト用スリーブは、アウタースリーブの内に、金属材料からなるスリーブを設けたダイカスト用スリーブであって、スリーブの金型側の先端部に固定した金属製のブッシング部材と、ブッシング部材の外周に形成した冷却用の環状の溝部を覆う金属製のリング状のカバー部材とを有し、ブッシング部材に溶接固定するカバー部材に波状の伸縮部を形成したことを特徴とする。 Further, the die casting sleeve of the third aspect of the present invention is a die casting sleeve in which a sleeve made of a metal material is provided in an outer sleeve, and is a metal bushing member fixed to a tip portion on the mold side of the sleeve. And a ring-shaped cover member made of metal that covers an annular groove for cooling formed on the outer periphery of the bushing member, and a wave-like expansion and contraction portion is formed on the cover member that is welded to the bushing member. To do.
本発明のカバー部材は、炭素鋼管などからなるリング状の部材であり、その周縁部を除く一部分に、断面形状が波状の伸縮部をカバー部材の全周にわたって形成した。カバー部材は、補強リングの外周に形成した冷却用の環状の溝部全体を覆うように補強リングに溶接固定される。カバー部材の両周縁部が溶接される。 The cover member of the present invention is a ring-shaped member made of a carbon steel pipe or the like, and a stretchable portion having a wavy cross-sectional shape is formed on the entire circumference of the cover member in a portion excluding the peripheral portion. The cover member is welded and fixed to the reinforcing ring so as to cover the entire cooling annular groove formed on the outer periphery of the reinforcing ring. Both peripheral portions of the cover member are welded.
スリーブ使用中に補強リング全体が高温に至ったとき、補強リングの熱膨張によりカバー部材が引っ張られる。そこで、カバー部材に設けた波状の伸縮部が伸びを吸収し、溶接部への応力が軽減されて溶接部の割れを防止できる。伸縮部は熱膨張時に膨張しやすく常温時に縮んで元の状態に戻る。また、本発明のセラミックス系材料とは、窒化ケイ素やサイアロンなどのセラミックスはもちろんのこと、金属とセラミックスの複合材料のようにセラミックスを含む材料を指す。 When the entire reinforcing ring reaches a high temperature during use of the sleeve, the cover member is pulled by thermal expansion of the reinforcing ring. Therefore, the wavy stretchable portion provided in the cover member absorbs the elongation, and the stress on the welded portion is reduced, so that the welded portion can be prevented from cracking. The stretchable part easily expands at the time of thermal expansion and contracts at normal temperature to return to its original state. The ceramic material of the present invention refers to a material containing ceramics such as a composite material of metal and ceramics as well as ceramics such as silicon nitride and sialon.
また、第２の本発明のダイカスト用スリーブにおいても、前記第１の本発明同様に、高温の溶融金属と接触する金属材料からなるスリーブが熱膨張することにより、スリーブに溶接固定した熱膨張の少ないカバー部材が引っ張られる。そこで、カバー部材に設けた波状の伸縮部が伸びを吸収し、溶接部への応力が軽減されて溶接部の割れを防止できる。伸縮部は熱膨張時に膨張しやすく常温時に縮んで元の状態に戻る。 Further, in the die casting sleeve of the second aspect of the present invention, as in the case of the first aspect of the present invention, the thermal expansion of the sleeve made of a metal material that comes into contact with the high-temperature molten metal results in thermal expansion that is welded to the sleeve. A few cover members are pulled. Therefore, the wavy stretchable portion provided in the cover member absorbs the elongation, and the stress on the welded portion is reduced, so that the welded portion can be prevented from cracking. The stretchable part easily expands at the time of thermal expansion and contracts at normal temperature to return to its original state.
さらに、第３の本発明のダイカスト用スリーブにおいても、前記第１の本発明同様に、高温の溶融金属と接触する金属材料からなるブッシング部材が熱膨張することにより、ブッシング部材に溶接固定した熱膨張の少ないカバー部材が引っ張られる。そこで、カバー部材に設けた波状の伸縮部が伸びを吸収し、溶接部への応力が軽減されて溶接部の割れを防止できる。伸縮部は熱膨張時に膨張しやすく常温時に縮んで元の状態に戻る。 Further, in the die casting sleeve of the third aspect of the invention, as in the case of the first aspect of the invention, the bushing member made of a metal material that comes into contact with the high-temperature molten metal is thermally expanded, so that the heat fixed by welding to the bushing member. The cover member with less expansion is pulled. Therefore, the wavy stretchable portion provided in the cover member absorbs the elongation, and the stress on the welded portion is reduced, so that the welded portion can be prevented from cracking. The stretchable part easily expands at the time of thermal expansion and contracts at normal temperature to return to its original state.
図１は、本発明実施例のダイカスト用スリーブの金型側先端部の概略断面図を示す。図１において、ダイカスト用スリーブは、低熱膨張性金属製の外筒１の内面に、耐溶損性などに優れる窒化ケイ素セラミックス製の内筒２を焼嵌めて構成した。ダイカスト鋳造の際、内筒２の中空部３にアルミニウム合金などの溶融金属が供給される。 FIG. 1 is a schematic cross-sectional view of a die side tip portion of a die casting sleeve according to an embodiment of the present invention. In FIG. 1, the die-casting sleeve is constructed by shrink fitting an inner cylinder 2 made of silicon nitride ceramics, which has excellent resistance to melting damage, on the inner surface of an outer cylinder 1 made of low thermal expansion metal. During die casting, molten metal such as an aluminum alloy is supplied to the hollow portion 3 of the inner cylinder 2.
ダイカスト用スリーブの金型側先端部の外周に熱間金型用鋼製の補強リング４を嵌着固定した。補強リング４は、外筒１および内筒２の金型側の先端面と外筒１の先端部外周に当接するように固定した。補強リング４の外周には冷却用の環状の溝部７を形成した。 A reinforcing ring 4 made of hot die steel was fitted and fixed to the outer periphery of the die side end of the die casting sleeve. The reinforcing ring 4 was fixed so as to come into contact with the distal end surfaces of the outer cylinder 1 and the inner cylinder 2 on the mold side and the outer periphery of the distal end of the outer cylinder 1. An annular groove 7 for cooling was formed on the outer periphery of the reinforcing ring 4.
リング状のカバー部材８として機械構造用炭素鋼管を用意した。そして、カバー部材８の中央部の外周面および内周面を機械加工した。図１に示すように、カバー部材８の肉厚が薄くなるようにして、断面形状が波状の伸縮部９をカバー部材８の全周にわたって形成した。 A carbon steel pipe for machine structure was prepared as the ring-shaped cover member 8. And the outer peripheral surface and inner peripheral surface of the center part of the cover member 8 were machined. As shown in FIG. 1, the expansion / contraction part 9 having a wavy cross-sectional shape was formed over the entire circumference of the cover member 8 so that the cover member 8 was thin.
そして、カバー部材８が補強リング４に形成した溝部７を覆うように、カバー部材８の周縁部を補強リング４に密に溶接Ｗして固定した。これにより、冷却水が循環する中空の冷却路６を形成した。補強リング４の外部から冷却路６に通じる冷却水の入水口５および排水口を設け、冷却路６の内部に仕切り壁を設けることにより、冷却水が冷却路６の内部を循環できるようにした。 Then, the peripheral edge of the cover member 8 was closely welded and fixed to the reinforcing ring 4 so that the cover member 8 covered the groove 7 formed in the reinforcing ring 4. Thereby, the hollow cooling path 6 through which cooling water circulates was formed. A cooling water inlet 5 and a drain outlet that lead to the cooling path 6 from the outside of the reinforcing ring 4 are provided, and a partition wall is provided inside the cooling path 6 so that the cooling water can circulate inside the cooling path 6. .
このようにして得られた本発明のダイカスト用スリーブをダイカスト鋳造に使用した結果、補強リングの熱膨張によっても、カバー部材の伸縮部が伸びを吸収し、溶接部への応力が軽減されてカバー部材の溶接部からの割れなどは全く見られなかった。すなわち冷却水の漏れが起こらず長期間にわたって安定した射出を行なうことができた。 As a result of using the thus obtained die casting sleeve of the present invention for die casting, the expansion and contraction part of the cover member absorbs the elongation even by the thermal expansion of the reinforcing ring, and the stress to the welded part is reduced. No cracks from the welded part of the member were observed. That is, the cooling water did not leak and stable injection could be performed over a long period of time.
次に、第２および第３の本発明のダイカスト用スリーブを以下、図面に基づいて説明する。図４は、従来のダイカスト用スリーブの概略断面図を示す。図４において、ダイカスト用スリーブは、金属製のアウタースリーブ１１の内に、金属材料からなるスリーブ１２を設けて構成される。スリーブ１２の金型側の先端部の外周には冷却用の環状の溝部７が形成されている。そして、冷却用の環状の溝部７の全体を覆うように、金属製のリング状のカバー部材８の周縁部をスリーブ１２に溶接Ｗして固定する。これにより、冷却水が循環する中空の冷却路６が形成される。ダイカスト鋳造の際、スリーブ１２の中空部３に溶融金属が供給される。 Next, the second and third die casting sleeves of the present invention will be described below with reference to the drawings. FIG. 4 is a schematic cross-sectional view of a conventional die casting sleeve. In FIG. 4, the die casting sleeve is configured by providing a sleeve 12 made of a metal material in a metal outer sleeve 11. An annular groove 7 for cooling is formed on the outer periphery of the tip portion of the sleeve 12 on the mold side. And the peripheral part of the metal ring-shaped cover member 8 is welded and fixed to the sleeve 12 so as to cover the entire annular groove 7 for cooling. Thereby, the hollow cooling path 6 through which cooling water circulates is formed. During die casting, molten metal is supplied to the hollow portion 3 of the sleeve 12.
図５は、従来のダイカスト用スリーブの概略断面図を示す。図５において、ダイカスト用スリーブは、金属製のアウタースリーブ１１の内に、金属材料からなるスリーブ１２を設けて構成される。スリーブ１２の金型側の先端部に金属製のＳＫＤ６１鋼からなるブッシング部材１４を固定している。ブッシング部材１４の外周には冷却用の環状の溝部７が形成されている。そして、冷却用の環状の溝部７の全体を覆うように、金属製のリング状のカバー部材８の周縁部をブッシング部材１４に溶接固定Ｗする。ダイカスト鋳造の際、スリーブ１２の中空部３に溶融金属が供給される。 FIG. 5 is a schematic sectional view of a conventional die casting sleeve. In FIG. 5, the die casting sleeve is configured by providing a sleeve 12 made of a metal material in a metal outer sleeve 11. A bushing member 14 made of metal SKD61 steel is fixed to the tip of the sleeve 12 on the mold side. An annular groove 7 for cooling is formed on the outer periphery of the bushing member 14. Then, the peripheral edge portion of the metal ring-shaped cover member 8 is welded and fixed to the bushing member 14 so as to cover the entire annular groove portion 7 for cooling. During die casting, molten metal is supplied to the hollow portion 3 of the sleeve 12.
図３は、図４に示す従来のダイカスト用スリーブに本発明のカバー部材を適用したものであり、第２の本発明実施例のダイカスト用スリーブの金型側先端部の概略断面図を示す。図３において、リング状のカバー部材８として機械構造用炭素鋼管を用意した。そして、カバー部材８の中央部の外周面および内周面を機械加工した。図３に示すように、カバー部材８の肉厚が薄くなるようにして、断面形状が波状の伸縮部９をカバー部材８の全周にわたって形成した。 FIG. 3 is a schematic cross-sectional view of the die-side tip of the die-casting sleeve of the second embodiment of the present invention, in which the cover member of the present invention is applied to the conventional die-casting sleeve shown in FIG. In FIG. 3, a carbon steel pipe for machine structure was prepared as the ring-shaped cover member 8. And the outer peripheral surface and inner peripheral surface of the center part of the cover member 8 were machined. As shown in FIG. 3, the stretchable portion 9 having a wavy cross-sectional shape was formed over the entire circumference of the cover member 8 so that the thickness of the cover member 8 was reduced.
そして、カバー部材８がスリーブ１２に形成した溝部７を覆うように、カバー部材８の周縁部をスリーブ１２に密に溶接Ｗして固定した。これにより、冷却水が循環する中空の冷却路６を形成した。スリーブ１２の外部から冷却路６に通じる冷却水の入水口および排水口を設け、冷却路６の内部に仕切り壁を設けることにより、冷却水が冷却路６の内部を循環できるようにした。 Then, the periphery of the cover member 8 was tightly welded and fixed to the sleeve 12 so that the cover member 8 covered the groove 7 formed in the sleeve 12. Thereby, the hollow cooling path 6 through which cooling water circulates was formed. A cooling water inlet and a drain outlet that lead from the outside of the sleeve 12 to the cooling path 6 are provided, and a partition wall is provided inside the cooling path 6 so that the cooling water can circulate inside the cooling path 6.
また、前記同様にして、図５に示す従来のダイカスト用スリーブに本発明のカバー部材を適用することにより、第３の本発明のダイカスト用スリーブが得られることは言うまでもない。 Further, it goes without saying that the die-casting sleeve of the third invention can be obtained by applying the cover member of the invention to the conventional die-casting sleeve shown in FIG. 5 in the same manner as described above.
このようにして得られた第２および第３の本発明のダイカスト用スリーブをダイカスト鋳造に使用した結果、スリーブまたはブッシング部材の熱膨張によっても、カバー部材の伸縮部が伸びを吸収し、溶接部への応力が軽減されてカバー部材の溶接部からの割れなどは全く見られなかった。すなわち冷却水の漏れが起こらず長期間にわたって安定した射出を行なうことができた。 As a result of using the die casting sleeves of the second and third aspects of the present invention thus obtained for die casting, the expansion and contraction of the cover member absorbs the elongation even by the thermal expansion of the sleeve or bushing member, and the welded portion The stress on the cover was reduced and no cracks or the like from the welded portion of the cover member were observed. That is, the cooling water did not leak and stable injection could be performed over a long period of time.
本発明のダイカスト用スリーブによれば、カバー部材の溶接部からの割れなどが発生せず、冷却水を安定して供給可能となり、安定した射出を行なうことができる。 According to the die-casting sleeve of the present invention, a crack or the like from the welded portion of the cover member does not occur, and cooling water can be stably supplied, so that stable injection can be performed.
１ 外筒、 ２ 内筒、 ３ 中空部、 ４ 補強リング、 ５ 入水口、 ６ 冷却路、
７ 溝部、 ８ カバー部材、 ９ 伸縮部
１１ アウタースリーブ、 １２ スリーブ、 １４ ブッシング部材
1 outer cylinder, 2 inner cylinder, 3 hollow part, 4 reinforcing ring, 5 water inlet, 6 cooling path,
7 Groove part, 8 Cover member, 9 Extendable part 11 Outer sleeve, 12 Sleeve, 14 Bushing member
Claims (3)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004233032A JP4618539B2 (en) | 2003-12-19 | 2004-08-10 | Die casting sleeve |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2003422685 | 2003-12-19 | ||
| JP2004233032A JP4618539B2 (en) | 2003-12-19 | 2004-08-10 | Die casting sleeve |
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| JP2005199347A true JP2005199347A (en) | 2005-07-28 |
| JP4618539B2 JP4618539B2 (en) | 2011-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2004233032A Expired - Lifetime JP4618539B2 (en) | 2003-12-19 | 2004-08-10 | Die casting sleeve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015047191A1 (en) * | 2013-09-26 | 2015-04-02 | Pratt & Whitney Services Pte Ltd. | Insert for die cast shot sleeve |
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| JPS61189390A (en) * | 1985-02-15 | 1986-08-23 | 株式会社日立製作所 | Expansion pipe joint |
| JPH04450U (en) * | 1990-04-16 | 1992-01-06 | ||
| JP2000094109A (en) * | 1998-09-17 | 2000-04-04 | Masashi Katsumi | Supplying structure of molten metal for die casting |
| JP2002130060A (en) * | 2000-10-24 | 2002-05-09 | Katayama Kogyo Co Ltd | Egr gas cooling device |
| JP2002283031A (en) * | 2001-03-27 | 2002-10-02 | Hitachi Metals Ltd | Sleeve for die casting |
| JP2003136213A (en) * | 2001-10-31 | 2003-05-14 | Toshiba Mach Co Ltd | Structure of injection sleeve for die casting machine |
| EP1770250A2 (en) * | 2005-09-28 | 2007-04-04 | Witzenmann GmbH | Heat exchanger for exhaust pipes |
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2004
- 2004-08-10 JP JP2004233032A patent/JP4618539B2/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61189390A (en) * | 1985-02-15 | 1986-08-23 | 株式会社日立製作所 | Expansion pipe joint |
| JPH04450U (en) * | 1990-04-16 | 1992-01-06 | ||
| JP2000094109A (en) * | 1998-09-17 | 2000-04-04 | Masashi Katsumi | Supplying structure of molten metal for die casting |
| JP2002130060A (en) * | 2000-10-24 | 2002-05-09 | Katayama Kogyo Co Ltd | Egr gas cooling device |
| JP2002283031A (en) * | 2001-03-27 | 2002-10-02 | Hitachi Metals Ltd | Sleeve for die casting |
| JP2003136213A (en) * | 2001-10-31 | 2003-05-14 | Toshiba Mach Co Ltd | Structure of injection sleeve for die casting machine |
| EP1770250A2 (en) * | 2005-09-28 | 2007-04-04 | Witzenmann GmbH | Heat exchanger for exhaust pipes |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015047191A1 (en) * | 2013-09-26 | 2015-04-02 | Pratt & Whitney Services Pte Ltd. | Insert for die cast shot sleeve |
| US10071417B2 (en) | 2013-09-26 | 2018-09-11 | United Technologies Corporation | Insert for die cast shot sleeve |
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| JP4618539B2 (en) | 2011-01-26 |
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