High-strength and high-toughness die-casting aluminum alloy for motorcycle and preparation method thereof
A high-strength, high-toughness, casting aluminum alloy technology, applied in the field of metal materials and their casting, can solve the problems of high production cost and poor mechanical properties of die-casting aluminum alloys, and achieve low production costs, meet comprehensive performance requirements, and excellent mechanical properties Effect
Active Publication Date: 2019-05-10
ZHEJIANG WANFENG MOTORCYCLE WHEEL
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Problems solved by technology
[0008] The technical problem to be solved by the present invention is that the mechanical properties of die-casting aluminum alloys in the prior art are poor and the production cost is relatively high. In order to solve this problem, the present invention provides a die-casting aluminum alloy with excellent mechanical properties and good casting performance. By optimizing the types and amounts of various elements in the die-casting aluminum alloy, the obtained die-casting aluminum alloy not only has high strength, but also has good toughness, which meets the requirements of structural materials for motorcycles and other parts
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[0039] The preparation method of the high-strength and high-toughness die-casting aluminum alloy product for motorcycles disclosed by the present invention specifically includes the following steps:
[0040] The first step: material preparation and crucible cleaning. Prepare raw materials and ingredients according to the designed alloy composition ratio, and clean the melting crucible after the preparation is completed. Alloy elements are added in the form of pure metal or master alloy, and the raw materials are pure aluminum, pure zinc, pure magnesium and Al-10%Y, Al-20%Si, Al-10%Sc and Al-10%Zr master alloys.
[0041] The second step: melting the alloy raw material. The prepared raw materials are put into the melting furnace for melting, and the crucible of silicon carbide material or graphite material or mixed material crucible without Fe is used for melting. The melting temperature is 710°C to 740°C. After the raw material smelting is completed, adjust the melt temperat...
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The invention discloses a high-strength and high-toughness die-casting aluminum alloy for a motorcycle and a preparation method thereof. The die-cast aluminum alloy is prepared from the following components by mass: 4.0%-6.0% of zinc, 1.0%-2.0% of yttrium, 3.0%-5.0% of silicon, 0.3%-0.4% of scandium, 0.1%-0.2% of zirconium, 0.2%-0.4% of magnesium, less than or equal to 0.25% of iron, less than orequal to 0.20% of impurities, and the balance aluminum. The invention further discloses a preparation method of the die-casting aluminum alloy product. The method comprises the following procedures ofselecting raw materials and performing matching, mixing the raw materials, smelting the mixed raw materials to obtain an alloy melt, and pouring the alloy melt into an injection chamber of a die-casting machine to die cast into the aluminum alloy product. After testing, a die-cast aluminum alloy motorcycle wheel hub has high strength and high toughness, the tensile strength in an as-cast state isbetween 300 MPa and 320 MPa, and the elongation is 7% or more.
Description
Technical field: [0001] The invention relates to the field of metal materials and casting thereof, in particular to a high-strength and high-toughness die-casting aluminum alloy for motorcycles and a preparation method thereof. Background technique: [0002] Wheel hubs and other components are important safety components carried by motorcycles. In addition to positive pressure during driving, they also bear the interaction of aerodynamics and braking torque, as well as irregular forces from various directions such as turning and impact. The quality and reliability of parts such as wheels are not only related to the safety of the vehicle and its personnel and materials, but also affect the stability, maneuverability, comfort and other performance of the vehicle during driving. Therefore, parts such as wheels are required to have strength. High, good toughness, high fatigue strength, high dimensional and shape precision, light weight and other comprehensive properties. Based ...
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Login to View More IPC IPC(8): C22C21/10C22C21/02C22C1/03C22C1/06B22D17/00
Inventor 刘建平邓乾昆姚玉兰安博吕辉
Owner ZHEJIANG WANFENG MOTORCYCLE WHEEL