Aluminum alloy composite tube sheet material for heat exchanger and leather material thereof

• Main Authors: GU YUEQIAN, NIE CUNZHU, LIAO YONGQI, TANG JINGSONG, XIE YONGLIN, GAO YONGJIN
• Format: Patent
• Language: Chinese; English
• Published: 03.09.2021
• Subjects: ALLOYS; BLASTING; CHEMISTRY; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; FERROUS OR NON-FERROUS ALLOYS; HEAT EXCHANGE IN GENERAL; HEATING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; PERFORMING OPERATIONS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WEAPONS

The invention relates to an aluminum alloy composite tube sheet material for a heat exchanger and a skin material thereof. The skin material, namely a skin layer, comprises 4.0-8.0 wt% of Si element, 1.0-2.0 wt% of Zn element, 0.01-0.03 wt% of P element and the balance Al element and inevitable impurities. The skin material does not contain Sr and Ca elements. The content of a single impurity in the skin material is less than or equal to 0.05 wt%, and the total content of the impurities is less than or equal to 0.15 wt%. The brazing fluidity coefficient of the skin material is not greater than 0.6, and the liquidus temperature of the skin material is not greater than 634 DEG C. The aluminum alloy composite tube sheet material for the heat exchanger comprises a core layer and a skin layer, wherein the core layer and the skin layer are metallurgically bonded, and the skin layer is made of the skin material. According to the aluminum alloy composite tube sheet material for the heat exchanger, an AnnexA3SWAAT exp