The invention discloses a wear-resistant hammer head of a hammer
crusher and a preparation method thereof. The wear-resistant hammer head comprises an end part of the hammer head and a
handle part of the hammer head, and is characterized in that the end part of the hammer head is made of high-
chromium cast iron which comprises the following components in percentage by weight: 2.40-3.20 percent of C, 0.30-1.50 percent of Si, 0.50-2.0 percent of Mn, 12.0-18.0 percent of Cr, less than or equal to 0.10 percent of P, less than or equal to 0.06 percent of S, 0.04 percent of Ce, 0.10-0.20 percent of V and the balance of iron; the
handle part of the hammer head is made of medium carbon low-
alloy steel which comprises the following components in percentage by weight: 0.30-0.50 percent of C, 0.30-1.0 percent of Si, 0.70-1.5 percent of Mn, 1.0-3.0 percent of Cr, 0.15-0.25 percent of Mo, less than or equal to 0.04 percent of P, less than or equal to 0.04 percent of S and the balance of iron; a liquid-liquid double
metal composite wear-resistant hammer head is cast by using a hollow cavity of lost foam, and the
casting process is controlled to prepare a double liquid-double
metal composite hammer head with interfaces bonded through metallurgical bonding. The
handle part of the hammer head is made of the medium carbon low-
alloy steel, and the end part of the hammer head is made of the high-
chromium cast iron. The service life of the hammer head can be improved by 2-3 times compared with that of a high-
manganese steel hammer head without changing the manufacturing cost.