CU ALLOY BRAZING FILLER METAL FOR BRAZING OF SINTERED HEAD ALLOY AND STEEL MEMBER

Title:

CU ALLOY BRAZING FILLER METAL FOR BRAZING OF SINTERED HEAD ALLOY AND STEEL MEMBER

Document Type and Number:

Japanese Patent JPS62259696

Kind Code:

A

Abstract:

PURPOSE: To prevent the chipping and dislodgment of a tip and to improve the service life thereof by executing brazing by using a Cu alloy made of a compsn. contg. specific ratios of Zn, Mn, and Co and consisting of the balance Cu and unavoidable impurities.

CONSTITUTION: A sintered hard alloy member and steel member are brazed by using the Cu alloy contg. 35W45% Zn, 1.5W3% Mn, and 1.5W3% Co. The brazing is executed at 0.25W0.5mm brazing allowance and ≤975°C brazing temp. The brazed members are preferably cooled at ≥5°C/sec cooling rate until the brazing filler metal solidifies after the completion of brazing. The uniform structure is thereby formed and as a result, the brazing layer which has low high-temp. deformation resistance, small residual stress after the brazing, and high ordinary-temp. strength is obtd.

Inventors:

HIJI TOSHIHARU
YOSHIDA HIDEAKI
HIWASA YONEO

Application Number:

JP10454686A

Publication Date:

November 12, 1987

Filing Date:

May 07, 1986

Export Citation:

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Assignee:

MITSUBISHI METAL CORP

International Classes:

B23K35/30; C22C9/04; (IPC1-7): B23K35/30; C22C9/04

Domestic Patent References:

JPS609596A	1985-01-18
JPS52153841A	1977-12-21
JPS56165591A	1981-12-19
JPS5831275A	1983-02-23

Attorney, Agent or Firm:

Kazuo Tomita

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