Brazing filler material and brazing sheet

Patent metadata

Field	Value
Publication number	US-10478925-B2
Application number	US-201615554044-A
Country	US
Kind code	B2
Filing date	Feb 23, 2016
Priority date	Mar 20, 2015
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

The present invention provides a brazing filler material in which the formation of coarse Si particles is suppressed, and a brazing sheet using the same. The brazing filler material includes Si: 3.5% by mass or more and 13.0% by mass or less, Ti: 0.001% by mass or more and 0.05% by mass or less, V: more than 0.0005% by mass and 0.05% by mass or less, and B: 0.001% by mass or less (excluding 0% by mass), with the balance being Al and inevitable impurities, and the value of V/Ti, which is a value obtained by dividing the V content (% by mass) by the Ti content (% by mass) is 0.05 or more and 5 or less.

First claim

The invention claimed is:

1. A brazing filler material, consisting of:
Si: 3.5% by mass or more and 13.0% by mass or less,
Ti: 0.001% by mass or more and 0.05% by mass or less,
V: more than 0.0005% by mass and 0.05% by mass or less,
Fe: 0.15% by mass or more and 1.2% by mass or less,
Cu: less than 0.05% by mass,
B: 0.001% by mass or less, excluding 0% by mass,
with the balance being Al and inevitable impurities,
wherein a value of V/Ti, which is a value obtained by dividing a V content (% by mass) by a Ti content (% by mass), is 0.05 or more and 5 or less.

2. A brazing filler material, consisting of:
Si: 3.5% by mass or more and 13.0% by mass or less,
Ti: 0.001% by mass or more and 0.05% by mass or less,
V: more than 0.0005% by mass and 0.05% by mass or less,
Fe: 0.15% by mass or more and 1.2% by mass or less,
Cu: less than 0.05% by mass,
B: 0.001% by mass or less, excluding 0% by mass,
one or more element selected from the group consisting of Zn: 0.01% by mass or more and 6.0% by mass or less, and Mn: 0.01% by mass or more and 1.2% by mass or less,
with the balance being Al and inevitable imprities,
wherein a value of V/Ti, which is a value obtained by dividing a V content (% by mass) by a Ti content (% by mass), is 0.05 or more and 5 or less.

3. A brazing sheet, wherein the brazing filler material according to claim 1 is cladded on at least one side of a core material.

4. A brazing sheet, wherein the brazing filler material according to claim 2 is cladded on at least one side of a core material.

5. A brazing filler material, consisting of:
Si: 3.5% by mass or more and 13.0% by mass or less,
Ti: 0.001% by mass or more and 0.05% by mass or less,
V: more than 0.0005% by mass and 0.05% by mass or less,
Fe: 0.15% by mass or more and 1.2% by mass or less,
Cu: less than 0.05% by mass,
B: 0.001% by mass or less, excluding 0% by mass, and
one or more element selected from the group consisting of Zn: 0.01% by mass or more and 6.0% by mass or less, Mn: 0.01% by mass or more and 1.2% by mass or less, Na: 0.0001% by mass or more and 0.01% by mass or less, and Sr: 0.001% by mass or more and 0.05% by mass or less,
with the balance being Al and inevitable impurities,
wherein a value of V/Ti, which is a value obtained by dividing a V content (% by mass) by a Ti content (% by mass), is 0.05 or more and 5 or less.

6. A brazing sheet, wherein the brazing filler material according to claim 5 is cladded on at least one side of a core material.

Assignees

• Kobe Steel Ltd

Inventors

• Izumi Takahiro
• Yoshida Kenichiro
• Tsuruno Akihiro

Classifications

• C22C21/10

  with zinc as the next major constituent · CPC title

• B23K35/282 Primary

  Zn as the principal constituent · CPC title

• B23K35/28

  with the principal constituent melting at less than 950°C · CPC title

• F28F21/084

  from aluminium or aluminium alloys · CPC title

• B23K35/22

  characterised by the composition or nature of the material · CPC title