Method for preparing double-metal composite material by solid-liquid combination of solid-state copper material and drawing composition
A composite material and solid-liquid compounding technology, which is applied in the preparation of bimetallic composite materials by solid-liquid composite casting and drawing combination of copper materials, and in the field of bimetallic composite materials prepared by solid-liquid composite casting and drawing combination process, which can solve thermal cracking , low performance of interactive bimetal composite materials, composition segregation and other problems, to avoid oxidation slag, improve mechanical properties and physical properties, and improve shear performance
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Embodiment 1
[0031] This embodiment relates to a method for preparing a bimetallic composite material by solid-liquid composite and drawing combination of solid copper materials, including the following steps:
[0032] Step 1. Perform thermal spraying zinc surface treatment on the solid Cu-Cr-Zr copper alloy preset material to be connected, and the thickness of the zinc layer is 15 μm;
[0033] Step 2: Pre-position the solid Cu-Cr-Zr copper alloy after surface treatment at the desired position in the mold cavity;
[0034] Step 3: Melting the 6101 extruded aluminum alloy in a resistance furnace and pouring it into the mold cavity, using the metal mold casting process, the pouring temperature is 680°C, so that a metallurgical bond between copper and aluminum is formed;
[0035] Step 4. The obtained Cu-Cr-Zr-6101 copper-aluminum bimetallic drawing blank is annealed before drawing, the annealing temperature is 100°C, the annealing time is 300min, and then the drawing process is continued, and the proce...
Embodiment 2
[0039] This embodiment relates to a method for preparing a bimetallic composite material by solid-liquid composite and drawing combination of solid copper materials, including the following steps:
[0040] Step 1. Perform thermal spraying zinc surface treatment on the solid T2 red copper preset material to be connected, and the thickness of the zinc layer is 15 μm;
[0041] Step 2: Preset the solid T2 copper after surface treatment at the desired position in the mold cavity;
[0042] Step 3: Melt the A356 cast aluminum alloy in the resistance furnace and pour it into the mold cavity. Using the squeeze casting process, the pouring temperature is 700°C, and the squeeze casting pressure is 70MPa to form a metallurgical bond between copper and aluminum;
[0043] Step 4. The obtained T2-A356 copper-aluminum bimetallic drawing blank is annealed before drawing, the annealing temperature is 300℃, the annealing time is 50min, and then the drawing process is continued. The process is continuous ...
Embodiment 3
[0047] This embodiment relates to a method for preparing a bimetallic composite material by solid-liquid composite and drawing combination of solid copper materials, including the following steps:
[0048] Step 1. Perform thermal spraying zinc surface treatment on the solid T2 red copper preset material to be connected, and the thickness of the zinc layer is 15 μm;
[0049] Step 2: Preset the solid T2 copper after surface treatment at the desired position in the mold cavity;
[0050] Step 3: Melting the AZ91 magnesium alloy in the resistance furnace and pouring it into the mold cavity, using the squeeze casting process, the pouring temperature is 650℃, and the squeeze casting pressure is 50MPa, so that a metallurgical bond between aluminum and magnesium is formed;
[0051] Step 4. The obtained T2-AZ91 copper-magnesium bimetal is subjected to drawing processing, the process is straight drawing, the drawing temperature is 250°C, the reduction ratio is 40 / 100, and the drawing speed is 20m...
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