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Based on the analysis of feed grinder working principles and the influence of hammer form changing on the working efficiency during the hammer wear passivating process, the hammer self-sharpening enhanced process was put forward. The gas carburizing process was used to strengthen the two sides of the hammer, and the seepage treatment was used to strengthen the side surface and axle hole of the hammer. With the appropriate heat treatment, the metallographic structures of the two edges and the middle part were different. As a result, the hardness of the hammer edges was much greater than that of the middle part. And the production test confirmed that the section corner could not be formed during the hammer’s working process. The frontal attack on materials and edges cutting of the hammer were maintained.