Thermal deformation strengthening method of rare-earth magnesium alloy
A technology of rare earth magnesium and hot deformation, which is applied in the field of metal material forming and processing, can solve the problems of alloy room temperature deformation ability to be improved, low alloy elongation, grain refinement, etc., achieve high surface quality, simple operation, and reduce production cost effect
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Embodiment 1
[0025] The present embodiment adopts the 180mm diameter round ingot that common casting obtains;
[0026] 1. Homogenize the alloy round ingot at 525°C for 10 hours, then cool it with water, and remove the skin;
[0027] 2. Before extrusion, apply molybdenum disulfide lithium-based lubricant evenly on the inner wall of the extrusion die and the inner wall of the extrusion cylinder for lubrication; heat the homogenized magnesium alloy billet to 400°C for 45 minutes and then perform an extrusion. The pressure ratio is 9:1, the extrusion speed is 1m / min, and the temperature of the extrusion die and extrusion barrel is kept at 380°C;
[0028] 3. Heat the primary extruded magnesium alloy round bar to 400°C for 45 minutes, peel off the skin and perform secondary extrusion. The extrusion ratio is 9:1, the extrusion speed is 1m / min, and the temperature of the extrusion die and extrusion cylinder is kept at 380°C;
[0029] 4. The rare earth magnesium alloy after twice extrusion is sub...
Embodiment 2
[0031] The present embodiment adopts the 180mm diameter round ingot that common casting obtains;
[0032] 1. Homogenize the alloy round ingot at 525°C for 16 hours, then cool it with water, and remove the skin;
[0033] 2. Before extrusion, apply molybdenum disulfide lithium-based lubricant evenly on the inner wall of the extrusion die and the inner wall of the extrusion cylinder for lubrication; heat the homogenized magnesium alloy billet to 430°C for 45 minutes and then perform an extrusion. The pressure ratio is 16:1, the extrusion speed is 1m / min, and the temperature of the extrusion die and extrusion barrel is kept at 400°C;
[0034] 3. Heat the primary extruded magnesium alloy round bar to 430°C for 45 minutes, peel off the skin and perform secondary extrusion. The extrusion ratio is 16:1, the extrusion speed is 1m / min, and the temperature of the extrusion die and extrusion cylinder is kept at 400°C;
[0035]4. The rare earth magnesium alloy after twice extrusion is su...
Embodiment 3
[0037] The present embodiment adopts the 180mm diameter round ingot that common casting obtains;
[0038] 1. Homogenize the alloy round ingot at 525°C for 24 hours, then cool it with water, and remove the skin;
[0039] 2. Before extrusion, apply molybdenum disulfide lithium-based lubricant evenly on the inner wall of the extrusion die and the inner wall of the extrusion cylinder for lubrication; heat the homogenized magnesium alloy billet to 450 ° C for 45 minutes and then perform an extrusion. The pressure ratio is 25:1, the extrusion speed is 1m / min, and the temperature of the extrusion die and extrusion barrel is kept at 420°C;
[0040] 3. Heat the primary extruded magnesium alloy round bar to 450°C and keep it warm for 45 minutes, peel off the skin and perform secondary extrusion. The extrusion ratio is 25:1, the extrusion speed is 1m / min, and the temperature of the extrusion die and extrusion cylinder is kept at 420°C;
[0041] 4. The rare earth magnesium alloy after t...
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