Cemented carbide is mainly used for cold drawing dies, cold punching dies, cold extrusion dies, cold pier dies and other cold work dies.
Carbide cold heading dies are subjected to impact or strong impact wear-resistant working conditions, the commonality of which is the requirement for carbide to have good impact toughness, fracture toughness, fatigue strength, flexural strength and good wear resistance. Usually choose medium and high cobalt and medium and coarse grain alloy grades, common such as YG15C.
Generally speaking, the relationship between wear resistance and toughness of cemented carbide is contradictory: the increase of wear resistance will lead to the decrease of toughness, and the increase of toughness will inevitably lead to the decrease of wear resistance. Therefore, when choosing the alloy grade, it is necessary to meet the specific use requirements according to the processing object and processing working conditions.
If the chosen grade is easily damaged by early cracking in use, it is advisable to choose a grade with higher toughness; if the chosen grade is easily damaged by early wear in use, it is advisable to choose a grade with higher hardness and better wear resistance. The following grades: YG15C, YG18C, YG20C, YL60, YG22C, YG25C from left to right, the hardness decreases, the wear resistance decreases, and the toughness increases; conversely, the opposite.
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Post time: Jun-22-2023
