COPPER ALLOY HOT-FORGED PART AND PROCESS FOR PRODUCING COPPER ALLOY HOT-FORGED PART

Title:

COPPER ALLOY HOT-FORGED PART AND PROCESS FOR PRODUCING COPPER ALLOY HOT-FORGED PART

Document Type and Number:

WIPO Patent Application WO/2012/060359

Kind Code:

A1

Abstract:

This copper alloy hot-forged part has an alloy composition which contains 0.21 to 0.44 mass% of Co, 0.06 to 0.13 mass% of P, 0.003 to 0.08 mass% of Sn and 0.00003 to 0.0030 mass% of O, with the balance consisting of Cu and unavoidable impurities, and in which the Co content, [Co] mass%, and the P content, [P] mass%, satisfy the relationship: 3.1 ≤ ([Co] - 0.005)/([P] - 0.006) ≤ 4.9. In the cross-sectional metal structure, the sum of the fraction of recrystallized-grain groups where the recrystallized grains have an average grain diameter of 0.050 to 0.50mm and the fraction of un-recrystallized grains is 80% or above.

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Inventors:

OISHI KEIICHIRO (JP)
TSUGAWA YASUHIRO (JP)

Application Number:

PCT/JP2011/075149

Publication Date:

May 10, 2012

Filing Date:

November 01, 2011

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Assignee:

MITSUBISHI SHINDO KK (JP)
OISHI KEIICHIRO (JP)
TSUGAWA YASUHIRO (JP)

International Classes:

C22C9/06; C22C9/00; C22C9/04; C22F1/08; H01B1/02; C22F1/00

Domestic Patent References:

WO2009107586A1	2009-09-03
WO2004079026A1	2004-09-16

Foreign References:

JP2010212164A

2010-09-24

Attorney, Agent or Firm:

OHNAKA Minoru et al. (JP)
Minoru Onaka (JP)

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