Steel bonded hard alloy and preparation method thereof
A technology of steel-bonded cemented carbide and cemented carbide, which is applied in the field of steel-bonded cemented carbide materials and their preparation, and can solve problems such as limited improvement range and the like
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Embodiment 1
[0024] Embodiment 1: According to figure 1 The process shown, according to the weight percentage of mixed raw material powder, 50% TiC, 0.25% C powder, 0.91% Cr-Fe powder (equivalent to 0.5% Cr), 0.5% Mo powder, 0.46% Fe 2 Al 5 powder (equivalent to 0.25% Al), and the balance of Fe powder, mixed with wet grinding, the wet ground mixture was spray-dried, pressed and formed, and then the compact was vacuum liquid-phase sintered at 1435°C to obtain TiC-Fe-Cr-Mo- Al-C steel-bonded hard alloy, wherein the weight percentage of the binder phase is 50%. The specific preparation parameters are shown in Table 1, and the microstructure, energy spectrum photographs of the binder phase, fracture toughness, and hardness are shown in Table 1, respectively. Figure 2a , Figure 2b , Figure 3a , Figure 3b .
Embodiment 2
[0025] Embodiment 2: According to figure 1 The process shown, according to the weight percentage of mixed raw material powder, 50% TiC, 0.315% C powder, 2.83% Cr-Fe powder (equivalent to 1.5% Cr), 1.5% Mo powder, 2.06% Fe 2 Al 5powder (equivalent to 1.13% Al), and the balance of Fe powder, mixed with wet grinding, the wet ground mixture was spray-dried, pressed and formed, and then the compact was sintered in vacuum liquid phase at 1430°C to obtain TiC-Fe-Cr-Mo- Al-C steel-bonded hard alloy, wherein the weight percentage of the binder phase is 50%. The specific preparation parameters are shown in Table 1, and the microstructure, energy spectrum photographs of the binder phase, fracture toughness, and hardness are shown in Table 1, respectively. Figure 2a , Figure 2b , Figure 3a , Figure 3b .
[0026] The preparation technological process of embodiment 3~9 of the present invention is as figure 1 As shown, the specific process parameters are shown in Table 1. Compared...
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