High temperature creep resistant high thermal conductivity high power LED magnesium alloy radiator and preparation method thereof
A high thermal conductivity and high power technology, applied in the field of LED magnesium alloy radiator, can solve the problems of easy cracking in processing, low toughness of magnesium alloy radiator, and low creep resistance at high temperature, so as to reduce deformation resistance and improve uneven composition performance, improve the effect of heat conduction performance
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Embodiment 1
[0031] High temperature creep resistance high thermal conductivity high power LED magnesium alloy radiator, its preparation method is as follows:
[0032] Take Mg-2.5Al-0.4Zn-0.4Sr-0.2Sn-0.1B alloy as an example to process radiators with smaller cross-sections:
[0033] The first step, charge preparation and charge and mold preheating
[0034] Furnace charge preparation: use pure magnesium ingot, pure aluminum ingot, pure zinc ingot, pure tin ingot, Mg-25Sr master alloy, Al-3B master alloy, Mg-4Mn master alloy as raw materials, according to mass percentage 2.5%Al, 0.4%Zn, 0.4%Sr, 0.2%Sn, 0.1%B, 0.1%Mn, and the rest is Mg. Prepare furnace charge;
[0035] Furnace material and mold preheating: put the prepared furnace material in a drying oven at 200°C for 30 minutes; use a metal mold, and place the mold in a resistance furnace for 30 minutes at 200°C.
[0036] The second step, smelting and refining:
[0037] Melting: Preheat the crucible to 450°C in a well-type resistance f...
Embodiment 2
[0048] High temperature creep resistance high thermal conductivity high power LED magnesium alloy radiator, its preparation method is as follows:
[0049] Take Mg-3Al-1Zn-1Sr-2Sn-0.5B alloy as an example to process radiators with larger cross-sections:
[0050] The first step, charge preparation and charge and mold preheating:
[0051] Furnace charge preparation: use pure magnesium ingots, pure aluminum ingots, pure zinc ingots, pure tin ingots, Mg-25Sr master alloys, pure B blocks and Mg-4Mn master alloys as raw materials, with 3%Al, 1%Zn, 1 %Sr, 2% Sn, 0.5% B and 0.5%Mn, and the rest is Mg to prepare charge;
[0052] Furnace material preheating and mold preheating: put the prepared furnace material in a drying box and heat it to 200°C for 35 minutes; use a metal mold, and place the mold in a resistance furnace to heat it to 200°C for 45 minutes.
[0053] The second step, smelting and refining:
[0054] Melting: Preheat the crucible to 480°C in a well-type resistance furna...
Embodiment 3
[0065] High temperature creep resistance high thermal conductivity high power LED magnesium alloy radiator, its preparation method is as follows:
[0066] Take Mg-3.5Al-1.3Zn-3Sn-2Sr-1B alloy as an example to process a radiator with a large cross-sectional area:.
[0067] The first step, charge preparation and charge and mold preheating
[0068] Furnace charge preparation: use pure magnesium ingots, pure aluminum ingots, pure zinc ingots, pure tin ingots, Mg-25Sr master alloys, pure B blocks and Mg-4Mn master alloys as raw materials, and the mass percentages are 3.5%Al, 1.3%Zn, 2 %Sr, 3% Sn, 1% B and 0.8%Mn, and the rest is Mg to prepare charge;
[0069] Furnace material and mold preheating: put the prepared furnace material in a drying box and heat it to 200°C for 45 minutes; use a metal mold, and place the mold in a resistance furnace to heat it to 200°C for 60 minutes.
[0070] The second step, smelting and refining:
[0071] Melting: Preheat the crucible to 500°C in a w...
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Abstract
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