TiC steel-bonded cemented carbide and its manufacturing method
A technology for steel-bonded cemented carbide and cemented carbide rods, which is applied in the field of TiC-based steel-bonded cemented carbide and its preparation, and can solve the problem of large difference in manganese content between surface and core, large difference between surface and core, and resistance to thermal stress. Problems such as poor ability to achieve high grinding efficiency, uniform internal structure, and good ball milling effect
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[0009] Embodiment 1: The weight percentage (ie, wt%, the following embodiments are the same) is 56% TiC, 44% high manganese steel as required, and high manganese steel contains Ni 4.5%, Mo 2.1%, Mn 14.2%, C 1.1%, Fe margin. The cemented carbide rod is used as the grinding body, the ball-to-battery ratio is 6:1, the alcohol is used as the medium, the forming agent is added together with the raw materials, and the material is ball-milled for 28 hours and then discharged, followed by spray drying and granulation, then compression molding, and finally sinter , The TiC series steel bonded cemented carbide of the present application is obtained, and its typical metallographic diagram is shown in figure 1 , The performance is shown in Table 1.
Example Embodiment
[0010] Example 2: The weight percentage (ie wt%, the following examples are the same) is 54% TiC, 46% high-manganese steel as required, and the high-manganese steel contains Ni4.2%, Mo 2.0%, and Mn 14.8% , C 1.0%, Fe margin. The cemented carbide rod is used as the grinding body, the ball-to-battery ratio is 6:1, the alcohol is used as the medium, the forming agent is added together with the raw materials, and the material is ball-milled for 28 hours and then discharged, followed by spray drying and granulation, then compression molding, and finally sintering , The TiC series steel bonded cemented carbide of the present application is obtained, and its typical metallographic diagram is shown in figure 1 , The performance is shown in Table 1.
Example Embodiment
[0011] Embodiment 3: The weight percentage (ie, wt%, the following embodiments are the same) is 60% TiC, 40% high manganese steel as required, and the high manganese steel contains Ni 4.9%, Mo 1.9%, Mn 13.5%, C 1.2%, Fe balance. The cemented carbide rod is used as the grinding body, the ball-to-battery ratio is 6:1, the alcohol is used as the medium, the forming agent is added together with the raw materials, and the material is ball-milled for 28 hours and then discharged, followed by spray drying and granulation, then compression molding, and finally sintering , The TiC series steel bonded cemented carbide of the present application is obtained, and its typical metallographic diagram is shown in figure 1 , The performance is shown in Table 1.
[0012] Table 1 The performance comparison table of the TiC series steel bonded cemented carbide of the present invention and a certain patent application alloy
[0013]
[0014] by figure 1 , figure 2 The comparison shows that the TiC-...
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