Aluminum alloy bare material for member to be brazed and aluminum alloy clad material for member to be brazed

Patent metadata

Field	Value
Publication number	US-2023166364-A1
Application number	US-202117913267-A
Country	US
Kind code	A1
Filing date	Mar 25, 2021
Priority date	Mar 26, 2020
Publication date	Jun 1, 2023
Grant date	—

Abstract

An aluminum alloy bare material for a member to be brazed by flux-free brazing to a brazing sheet including a brazing material formed of an aluminum alloy that includes 3.00 to 13.00 mass % of Si and less than 0.10 mass % (including 0 mass %) of Mg with the balance being Al and inevitable impurities, in which the aluminum alloy bare material for the member to be brazed is formed of an aluminum alloy including 0.004 to 6.00 mass % of Zn and 0.004 to 3.00 mass % of Mg with the balance being Al and inevitable impurities. According to the present invention, aluminum alloy materials can be provided for members to be well brazed to the brazing sheet when an aluminum material is brazed by flux-free brazing.

First claim

1 . An aluminum alloy bare material for a member to be brazed by flux-free brazing to a brazing sheet comprising a brazing material formed of an aluminum alloy that comprises 3.00 to 13.00 mass % of Si and less than 0.10 mass % (including 0 mass %) of Mg with the balance being Al and inevitable impurities, wherein
the aluminum alloy bare material for the member to be brazed is formed of an aluminum alloy comprising 0.004 to 6.00 mass % of Zn and 0.004 to 3.00 mass % of Mg with the balance being Al and inevitable impurities.

2 . The aluminum alloy bare material for the member to be brazed according to claim 1 , the aluminum alloy bare material for the member to be brazed further comprising 1.00 mass % or less of Bi.

3 . The aluminum alloy bare material for the member to be brazed according to claim 1 , the aluminum alloy bare material for the member to be brazed further comprising 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, 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, and 0.10 mass % or less of Sn.

4 . The aluminum alloy bare material for the member to be brazed 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.

5 . An aluminum alloy clad material for a member to be brazed by flux-free brazing to a brazing sheet comprising a brazing material formed of an aluminum alloy that comprises 3.00 to 13.00 mass % of Si and less than 0.10 mass % (including 0 mass %) of Mg with the balance being Al and inevitable impurities, wherein
the aluminum alloy clad material for the member to be brazed comprises a cladding material at an outermost layer on a brazed side, and the cladding material is formed of an aluminum alloy comprising 0.004 to 8.00 mass % of Zn and 0.004 to 3.00 mass % of Mg with the balance being Al and inevitable impurities.

6 . The aluminum alloy clad material for the member to be brazed according to claim 5 , wherein the cladding material further comprises 1.00 mass % or less of Bi.

7 . The aluminum alloy clad material for the member to be brazed according to claim 5 , wherein the cladding material 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, 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, and 0.10 mass % or less of Sn.

8 . The aluminum alloy clad material for the member to be brazed according to claim 5 , 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.

Assignees

• Uacj Corp

Inventors

• YAMAYOSHI Tomoki
• Nakamura Shinichi
• Suzuki Taichi
• Tanaka Hirokazu
• Honma Nobuhiro
• Yamada Shogo
• Fukuda Taro
• Uchida Yosuke

Classifications

• C22C21/10

  with zinc as the next major constituent · CPC title

• C22C21/02

  with silicon as the next major constituent · CPC title

• B23K35/286 Primary

  Al as the principal constituent · CPC title

• B23K2103/10

  Aluminium or alloys thereof · CPC title

• B23K35/288 Primary

  with Sn or Zn · CPC title