Die material for copper hot extrusion and preparation process thereof
A mold material and a hot extrusion technology, applied in the field of preparation technology of the copper hot extrusion mold material, can solve the problems of poor toughness and processability, unfavorable industrial production, poor high temperature strength and the like, and improve the cold and heat fatigue resistance. , The effect of improving production efficiency and thermal conductivity
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Embodiment 1
[0024] A mold material for copper hot extrusion, mainly composed of Mo and La 2 o 3 / Mo 5 Si 3 Composite nanoparticles composed of La 2 o 3 / MoSi 2 The form of composite nanoparticles is added to molybdenum, and the addition amount is 1wt.%, La 2 o 3 with MoSi 2 The weight ratio is 1, and the purity and particle size of each raw material powder are as shown in Table 1.
[0025] Its preparation process steps are:
[0026] (1), ingredients
[0027] Prepare various powder raw materials according to the range of chemical composition, the purity of each raw material is greater than 99.9%, and the particle size is less than 5 μm;
[0028] (2), mixing
[0029] Put the prepared various raw material powders into the three-dimensional mixer and mix them until they are evenly mixed;
[0030] (3), compression molding
[0031] Put the well-mixed mixture into the elastic plastic sleeve, and press it by cold isostatic pressing, the cold isostatic pressure is 200MPa, and the time...
Embodiment 2
[0042] A mold material for copper hot extrusion, mainly composed of Mo and La 2 o 3 / Mo 5 Si 3 Composite nanoparticles composed of La 2 o 3 / MoSi 2 The form of composite nanoparticles is added to molybdenum, and the addition amount is 0.8wt.%, La 2 o 3 with MoSi 2 The weight ratio is 1:1, the purity of various raw materials is greater than 99.9%, and the particle size is less than 5 μm.
[0043] Its preparation process steps are:
[0044] (1), ingredients
[0045] Prepare various powder raw materials according to the range of chemical composition, the purity of each raw material is greater than 99.9%, and the particle size is less than 5 μm;
[0046] (2), mixing
[0047] Put the prepared various raw material powders into the three-dimensional mixer and mix them until they are evenly mixed;
[0048] (3), compression molding
[0049] Put the uniformly mixed mixture into the elastic plastic sleeve, and press it by cold isostatic pressing, the cold isostatic pressure ...
Embodiment 3
[0056] A mold material for copper hot extrusion, mainly composed of Mo and La 2 o 3 / Mo 5 Si 3 Composite nanoparticles composed of La 2 o 3 / MoSi 2 The form of composite nanoparticles is added to molybdenum, and the addition amount is 1.2wt.%, La 2 o 3 with MoSi 2 The weight ratio is 1:1.1, the purity of various raw materials is greater than 99.9%, and the particle size is less than 5 μm.
[0057] Its preparation process steps are:
[0058] (1), ingredients
[0059] Prepare various powder raw materials according to the range of chemical composition, the purity of each raw material is greater than 99.9%, and the particle size is less than 5 μm;
[0060] (2), mixing
[0061] Put the prepared various raw material powders into the three-dimensional mixer and mix them until they are evenly mixed;
[0062] (3), compression molding
[0063] Put the uniformly mixed mixture into the elastic plastic sleeve, and press it by cold isostatic pressing, the cold isostatic pressur...
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