High speed impact hammer is used to heat and hammer the seams of the upper and vamp and the edge of welt so as to eliminate the concave and convex and to flatten the edgefold with uneven thickness.

• 采用高速冲击锤头对皮鞋的鞋面鞋帮的接缝、鞋口的边缘进行加温锤击，使凹凸不平、厚薄不均的折边整平。