Cemented carbide six-sided anvil and preparation method thereof
A cemented carbide and six-sided top technology, which is applied in the field of cemented carbide six-sided top hammer and its preparation, can solve the problem that the friction force between the inclined surface of the top hammer and the sealing edge of pyrophyllite cannot be continuously guaranteed, the friction coefficient of pyrophyllite is small, and the manufacturing process is complicated. And other issues
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[0028] Such as figure 1 Shown, according to the first aspect of the present invention, the present invention provides a kind of preparation method of cemented carbide six-sided top hammer, it comprises the following steps:
[0029] Firstly, the cemented carbide can be processed sequentially by wet grinding process, drying process, pressing process, sintering process, rough grinding process and fine grinding process to obtain the cemented carbide six-sided anvil. The above-mentioned processes can all adopt the existing process methods, and the present invention will not repeat them here.
[0030] Secondly, the surface of the cemented carbide six-sided anvil except the small slope is covered with a protective layer, so that only the small slope of the cemented carbide six-sided anvil is exposed outside. Specifically, the protective layer is formed by covering the other surfaces of the cemented carbide six-sided anvil except the small slope with aluminum foil. The purpose of fo...
Embodiment 1
[0039] In the first step, the submicron grain six-sided anvil WC-10Co (grain size 0.8μm) is produced according to the existing process of cemented carbide production such as wet grinding-drying-pressing-sintering-coarse grinding-finishing , to obtain a carbide six-sided anvil.
[0040] In the second step, the hard alloy six-sided anvil obtained after fine grinding is covered with aluminum foil except for the small slope to form a protective layer.
[0041] The third step is to place the carbide six-sided anvil that has been protected by aluminum foil in the shot blasting machine to perform shot peening on its small slope. The shot peening process parameters used are as follows: the shot peening medium is corundum, the corundum mesh is 70 mesh, the injection pressure is 0.6MPa, the injection distance is 100mm, the injection angle is 15°, and the shot peening time of each small slope is 30s. 60s or 90s.
[0042] Specifically, with a shot peening time of 30s, the small slope ro...
Embodiment 2
[0048] In the first step, the submicron grain six-sided anvil WC-10Co (grain size 0.8μm) is produced according to the existing process of cemented carbide production such as wet grinding-drying-pressing-sintering-coarse grinding-finishing , to obtain a carbide six-sided anvil.
[0049] In the second step, the hard alloy six-sided anvil obtained after fine grinding is covered with aluminum foil except for the small slope to form a protective layer.
[0050] The third step is to place the carbide six-sided anvil that has been protected by aluminum foil in the shot blasting machine to perform shot peening on its small slope. The shot peening process parameters used are as follows: corundum is used as the shot peening medium, the corundum mesh is 50 mesh, the spray pressure is 0.6MPa, the spray distance is 100mm, the spray angle is 15°, and the shot peening time of each small slope is 30s , 60s or 90s.
[0051] Specifically, with a shot peening time of 30s, the roughness of the ...
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