A kind of high-strength aluminum alloy for gear box of EMU and preparation method thereof
A technology of aluminum alloy and gear box, which is applied in the field of aluminum alloy and can solve the problems of easy cracks and poor strength of the box
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Embodiment 1
[0020] A high-strength aluminum alloy for the gearbox of an EMU, the composition of the aluminum alloy includes the following components by weight percentage: 1.6% magnesium, 1.6% copper, 4.5% zinc, 0.6% iron, 0.15% silicon, 0.32% titanium, Chromium 0.1%, tellurium 0.03%, germanium 0.05%, niobium 0.12%, erbium 0.02%, molybdenum 0.2%, cerium 0.015%, scandium 0.07%, zirconium 0.06%, strontium 0.12%, the individual content of other impurity elements ≤0.05%, other The total content of impurity elements is ≤0.2%, and the balance is aluminum.
[0021] The preparation method of the high-strength aluminum alloy for the motor train gear box that the present invention proposes, concrete steps are as follows:
[0022] S1. Melting: Preheat the melting furnace for 15 minutes, put pure aluminum into the furnace, heat to 730°C, keep the temperature for 20 minutes after the pure aluminum is melted, and then add other raw materials in order of melting point from low to high, in the stirring st...
Embodiment 2
[0027] A high-strength aluminum alloy for the gearbox of an EMU, the composition of the aluminum alloy includes the following components by weight percentage: 2.2% magnesium, 0.9% copper, 5.3% zinc, 0.2% iron, 0.45% silicon, 0.15% titanium, Chromium 0.24%, tellurium 0.005%, germanium 0.12%, niobium 0.05%, erbium 0.08%, molybdenum 0.06%, cerium 0.054%, scandium 0.02%, zirconium 0.18%, strontium 0.04%, the individual content of other impurity elements ≤0.05%, other The total content of impurity elements is ≤0.2%, and the balance is aluminum.
[0028] The preparation method of the high-strength aluminum alloy for the motor train gear box that the present invention proposes, concrete steps are as follows:
[0029] S1. Melting: Preheat the melting furnace for 20 minutes, put pure aluminum into the furnace, heat to 710°C, keep the temperature for 25 minutes after the pure aluminum is melted, and then add other raw materials in order of melting point from low to high, in the stirring...
Embodiment 3
[0034] A high-strength aluminum alloy for the gearbox of an EMU, the composition of the aluminum alloy includes the following components by weight percentage: 1.95% magnesium, 1.3% copper, 4.98% zinc, 0.42% iron, 0.29% silicon, 0.22% titanium, Chromium 0.18%, tellurium 0.018%, germanium 0.09%, niobium 0.08%, erbium 0.045%, molybdenum 0.14%, cerium 0.032%, scandium 0.04%, zirconium 0.11%, strontium 0.09%, the single content of other impurity elements ≤0.04%, other The total content of impurity elements is ≤0.15%, and the balance is aluminum.
[0035] The preparation method of the high-strength aluminum alloy for the motor train gear box that the present invention proposes, concrete steps are as follows:
[0036]S1. Melting: Preheat the melting furnace for 17 minutes, put pure aluminum into the furnace, heat to 720°C, keep the temperature for 23 minutes after the pure aluminum is melted, and then add other raw materials in order of melting point from low to high, in the stirring...
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