JP2012523496A5 - - Google Patents

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Publication number
JP2012523496A5
JP2012523496A5 JP2012503983A JP2012503983A JP2012523496A5 JP 2012523496 A5 JP2012523496 A5 JP 2012523496A5 JP 2012503983 A JP2012503983 A JP 2012503983A JP 2012503983 A JP2012503983 A JP 2012503983A JP 2012523496 A5 JP2012523496 A5 JP 2012523496A5
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Japan
Prior art keywords
turbine wheel
volume
core
binder
raw material
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JP2012503983A
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Japanese (ja)
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JP2012523496A (en
JP5600734B2 (en
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Priority claimed from PCT/EP2010/054400 external-priority patent/WO2010115837A1/en
Publication of JP2012523496A publication Critical patent/JP2012523496A/en
Publication of JP2012523496A5 publication Critical patent/JP2012523496A5/ja
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Publication of JP5600734B2 publication Critical patent/JP5600734B2/en
Expired - Fee Related legal-status Critical Current
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Claims (7)

金属粉末射出成形によって排ガスターボチャージャーのためのタービンホイール（１）を製造するための方法であって、以下の工程：
ａ）以下の、
（Ａ）４０〜９０体積％のシンタリング可能なニッケルベースの粉末合金、又はチタンベースの粉末合金、
（Ｂ）１０〜６０体積％の、バインダーとしての以下の混合物、
（Ｂ１）８０〜９８質量％のポリエチレンホモポリマー、又はコポリマー、及び
（Ｂ２）２〜２０質量％のポリオレフィン、又はポリオレフィンの混合物、及び
（Ｃ）０〜５質量％の分散剤、
を含む原材料を用意する工程、
ｂ）タービンホイール（１）を金属粉末射出成形するために、製造するタービンホイール（１）のネガティブ型を含む工具を用意する工程、
ｃ）バインダーを含む回転対称コアを、工程（ｂ）で用意された工具のネガティブ型に導入し、及び前記コアを、製造するタービンホイール（１）の回転軸に対して、対称的に配置する工程、
ｄ）工程（ａ）で用意された原材料を前記コアの周囲に金属粉末射出成形することによって、素地を製造する工程、
ｅ）タービンホイール（１）の形状の成形物を得るために、バインダー除去工程を行ってバインダーを除去し、及びこれと同時にコアを除去する工程、及び
ｆ）成形物をシンタリングする工程、
を含む方法。 A method for producing a turbine wheel (1) for an exhaust gas turbocharger by metal powder injection molding comprising the following steps:
a)
(A) 40-90% by volume of a nickel-based powder alloy that can be sintered, or a titanium-based powder alloy ,
(B) 10-60% by volume of the following mixtures as binders:
(B1) 80-98% by weight polyethylene homopolymer or copolymer, and (B2) 2-20% by weight polyolefin, or a mixture of polyolefins, and (C) 0-5% by weight dispersant.
Preparing a raw material containing
b) preparing a tool including a negative mold of the turbine wheel (1) to be produced in order to injection-mold the turbine wheel (1) with metal powder;
c) The rotationally symmetric core containing the binder is introduced into the negative mold of the tool prepared in step (b), and the core is placed symmetrically with respect to the rotational axis of the turbine wheel (1) to be produced. Process,
d) a step of producing a substrate by injection-molding the raw material prepared in step (a) around the core;
e) to obtain a molded product in the shape of the turbine wheel (1), a binder removal step is performed to remove the binder and at the same time the core is removed; and f) a step of sintering the molded product,
Including methods. 工程（ａ）で用意される原材料中に含まれるバインダーを含むコアが、工程（ｃ）で導入されることを特徴とする請求項１に記載の方法。 The method according to claim 1, wherein a core containing a binder contained in the raw material prepared in step (a) is introduced in step (c). 工程（ｆ）で、成形物が、少なくとも１個の保持装置に備え付けられることを特徴とする請求項１又は２の何れかに記載の方法。   3. The method according to claim 1, wherein in step (f), the molding is provided on at least one holding device. タービンホイールの体積の５〜６０％の体積を有するコアが、工程（ｃ）で導入されることを特徴とする請求項１〜３の何れか１項に記載の方法。   4. A method according to any one of the preceding claims, characterized in that a core having a volume of 5-60% of the volume of the turbine wheel is introduced in step (c). 工程（ｅ）が２０〜１８０℃の範囲の温度で行われることを特徴とする請求項１〜４の何れか１項に記載の方法。   The method according to any one of claims 1 to 4, wherein step (e) is performed at a temperature in the range of 20 to 180 ° C. 工程（ｆ）が、２５０〜１５００℃の範囲の温度で行われることを特徴とする請求項１〜５の何れか１項に記載の方法。   The method according to any one of claims 1 to 5, wherein step (f) is performed at a temperature in the range of 250 to 1500 ° C. 請求項１〜６の何れか１項に記載の方法によって製造される、空洞の空間構造を有する、排ガスターボチャージャーのためのタービンホイールであって、前記空洞の空間構造は、タービンホイールの回転軸に対して対称であり、及びタービンホイールの体積に対して５〜６０体積％の体積を有することを特徴とするタービンホイール。   A turbine wheel for an exhaust gas turbocharger, produced by the method according to claim 1, having a hollow spatial structure, wherein the hollow spatial structure is a rotating shaft of the turbine wheel. And a volume of 5 to 60% by volume with respect to the volume of the turbine wheel.
JP2012503983A 2009-04-09 2010-04-01 Method for manufacturing a turbine wheel for an exhaust gas turbocharger Expired - Fee Related JP5600734B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09157695.9 2009-04-09
EP09157695 2009-04-09
PCT/EP2010/054400 WO2010115837A1 (en) 2009-04-09 2010-04-01 Method for producing a turbine wheel for an exhaust gas turbocharger

Publications (3)

Publication Number Publication Date
JP2012523496A JP2012523496A (en) 2012-10-04
JP2012523496A5 true JP2012523496A5 (en) 2013-05-09
JP5600734B2 JP5600734B2 (en) 2014-10-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012503983A Expired - Fee Related JP5600734B2 (en) 2009-04-09 2010-04-01 Method for manufacturing a turbine wheel for an exhaust gas turbocharger

Country Status (6)

Country Link
US (1) US20120034084A1 (en)
EP (1) EP2416910A1 (en)
JP (1) JP5600734B2 (en)
KR (1) KR20120042728A (en)
CN (1) CN102387882A (en)
WO (1) WO2010115837A1 (en)

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