Brazed aluminum member and method for producing brazed product

Patent metadata

Field	Value
Publication number	US-12311473-B2
Application number	US-202117916436-A
Country	US
Kind code	B2
Filing date	Mar 26, 2021
Priority date	Apr 2, 2020
Publication date	May 27, 2025
Grant date	May 27, 2025

Abstract

Provided is a brazed aluminum member brazed with a member formed of a brazing sheet, in which two or more grooves are provided on a surface of the brazed aluminum member in a fillet forming area, a groove depth (D 1 ) of the grooves is 0.005 mm to 0.50 mm, a groove width (W 1 ) of the grooves is 0.005 mm to 0.50 mm, a ratio (W 1 /D 1 ) of the groove width (W 1 ) to the groove depth (D 1 ) is 10.00 or less, and a space (P 1 ) between adjacent grooves is 0.00 mm to 0.30 mm. The present invention can provide an aluminum material and a method for producing a brazed product that can secure good brazing properties even when the clearance between the jointed members is large in the case where the aluminum material is brazed without using a flux.

First claim

The invention claimed is:

1. A brazed product comprising a brazed aluminum member and a member formed of a brazing sheet brazed with the aluminum member, the brazing sheet comprising:
a core material formed of an aluminum alloy comprising at least 3.00 mass % or less of Mg and formed with the balance being Al and inevitable impurities; and
a brazing material formed of an aluminum alloy comprising 3.00 mass % to 13.00 mass % of Si and formed with the balance being Al and inevitable impurities, wherein
two or more grooves are provided on a surface of the brazed aluminum member in a fillet forming area wherein fillets are formed by the brazing material of the brazing sheet that is flowed into the grooves,
a groove depth (D 1 ) of the grooves is 0.005 mm to 0.50 mm,
a groove width (W 1 ) of the grooves is 0.005 mm to 0.50 mm,
a ratio (W 1 /D 1 ) of the groove width (W 1 ) to the groove depth (D 1 ) is 10.00 or less, and
a space (P 1 ) between adjacent grooves is 0.00 mm to 0.30 mm.

2. The brazed product according to claim 1 , wherein the aluminum alloy forming the brazed aluminum member comprises any one or more of 1.50 mass % or less of Si, 1.00 mass % or less of Fe, 1.20 mass % or less of Cu, 2.00 mass % or less of Mn, 3.00 mass % or less of Mg, 8.00 mass % or less of Zn, 0.30 mass % or less of Cr, 0.30 mass % or less of Ti, 0.30 mass % or less of Zr, 0.10 mass % or less of In, 0.10 mass % or less of Sn, 1.00 mass % or less of Bi, 0.05 mass % or less of Na, 0.05 mass % or less of Sr, and 0.05 mass % or less of Sb and is formed with the balance being Al and inevitable impurities.

3. The brazed product according to claim 1 , wherein the brazing material of the brazing sheet further comprises any one or more of 1.00 mass % or less of Bi, 1.00 mass % or less of Fe, 1.20 mass % or less of Cu, 2.00 mass % or less of Mn, 8.00 mass % or less of Zn, 0.30 mass % or less of Cr, 0.30 mass % or less of Ti, 0.30 mass % or less of Zr, 0.10 mass % or less of In, 0.10 mass % or less of Sn, 0.05 mass % or less of Na, 0.05 mass % or less of Sr, and 0.05 mass % or less of Sb.

4. The brazed product according to claim 1 , wherein the core material of the brazing sheet further comprises any one or more of 1.50 mass % or less of Si, 1.00 mass % or less of Fe, 1.20 mass % or less of Cu, 2.00 mass % or less of Mn, 8.00 mass % or less of Zn, 0.30 mass % or less of Cr, 0.30 mass % or less of Ti, 0.30 mass % or less of Zr, 0.10 mass % or less of In, 0.10 mass % or less of Sn, 1.00 mass % or less of Bi, 0.05 mass % or less of Na, 0.05 mass % or less of Sr, and 0.05 mass % or less of Sb.

Assignees

• Uacj Corp

Inventors

• Nakamura Shinichi
• YAMAYOSHI Tomoki
• Suzuki Taichi
• Tanaka Hirokazu

Classifications

• C22C21/06

  with magnesium as the next major constituent · CPC title

• C22C21/02

  with silicon as the next major constituent · CPC title

• B23K1/008

  Soldering within a furnace (B23K1/012 takes precedence) · CPC title

• B23K33/004

  Filling of continuous seams · CPC title

• B23K1/19

  taking account of the properties of the materials to be soldered · CPC title