Brazing sheet and manufacturing method thereof
AssigneeUacj Corporation
InventorYasunaga Itoh
Life of this patent
Estimating the term…
Abstract
A brazing sheet brazing suitable for brazing performed in an inert gas atmosphere or in a vacuum without using a flux has a three-layer composition. An aluminum alloy core material contains Mg: 1.3 mass % or less. An aluminum alloy intermediate material is layered on the core material and contains Mg: 0.40-6.0 mass %. An aluminum alloy filler material is layered on the intermediate material and contains Si: 6.0-13.0 mass %, Bi: 0.0040-0.070 mass %, and Mg: 0.050-0.10 mass %.
Claims20
A brazing sheet usable in brazing performed in an inert-gas atmosphere or in a vacuum without using a flux, comprising:
- a core material having a chemical composition containing Mg:
- 1.3 mass % or less, the remainder being Al and unavoidable impurities;
- an intermediate material having a chemical composition containing Mg:
- 0.40 mass % or more and 6.0 mass % or less, the remainder being Al and unavoidable impurities, and being layered on the core material;
- and
- a filler material having a chemical composition containing Si:
- 6.0 mass % or more and 13.0 mass % or less, Bi:
- 0.0040 mass % or more and 0.070 mass % or less, and Mg:
- 0.050 mass % or more and less than 0.10 mass %, the remainder being Al and unavoidable impurities, and being layered on the intermediate material.
A brazing sheet, comprising:
- a core composed of an aluminum alloy comprising 0-1.3 mass % Mg;
- an intermediate material layered on the core and being composed of an aluminum alloy comprising 0.4-6.0 mass % Mg;
- and
- a filler layered on the intermediate material and being composed of an aluminum alloy comprising 6.0-13.0 mass % Si, 0.0040-0.070 mass % Bi, and 0.050-0.10 mass % Mg.
A brazing sheet usable in brazing performed in an inert-gas atmosphere or in a vacuum without using a flux, comprising:
- a core material having a chemical composition containing Mg:
- 1.0 mass % or less and one or more elements selected from the group consisting of:
- Mn:
- 0.30-2.0 mass %, Si:
- 0.10-1.0 mass %, Fe:
- less than 1.0 mass %, Cu:
- 1.0 mass % or less, Ti:
- less than 0.10 mass %, Zr:
- less than 0.30 mass %, and Cr:
- less than 0.30 mass %, the remainder being Al and unavoidable impurities;
- an intermediate material layered on the core material and having a chemical composition containing Mg:
- 0.40-6.0 mass % and Be:
- 0.050-0.20 mass %, the remainder being Al and unavoidable impurities;
- and
- a filler material layered on the intermediate material and having a chemical composition containing Si:
- 6.0-13.0 mass %, Bi:
- 0.0040-0.030 mass %, and Mg:
- 0.050-0.10 mass %, the remainder being Al and unavoidable impurities.
Dependencies are inferred from the claim text.