| 摘要 |
<p>A HEAT EXCHANGER USE HIGH STRENGTH ALUMINUM ALLOY FIN MATERIAL HAVING A HIGH STRENGTH AND EXCELLENT IN THERMAL CONDUCTIVITY, EROSION RESISTANCE, SAG RESISTANCE, SACRIFICIAL ANODIZATION EFFECT, AND SELF CORROSION RESISTANCE, CHARACTERIZED BY CONTAINING SI: 0.8 TO 1.4 WT%, FE: 0.15 TO 0.7 WT%, MN: 1.5 TO 3.0 WT%, AND ZN: 0.5 TO 2.5 WT%, LIMITING THE MG AS AN IMPURITY TO 0.05 WT% OR LESS, AND HAVING A BALANCE OF ORDINARY IMPURITIES AND AL IN CHEMICAL COMPOSITION, HAVING A METAL STRUCTURE BEFORE BRAZING OF A FIBROUS CRYSTAL GRAIN STRUCTURE, A TENSILE STRENGTH BEFORE BRAZING OF NOT MORE THAN 240 MPA, A TENSILE STRENGTH AFTER BRAZING OF NOT LESS THAN 150 MPA, AND A RECRYSTALLIZED GRAIN SIZE AFTER BRAZING OF 500 µM OR MORE.</p> |
