Abrasion-resistant alloy cast iron material with high hardness for chute lining plate, and preparation method thereof
A wear-resistant alloy, high-hardness technology, applied in the field of metal wear-resistant materials, can solve the problem of not being able to meet high hardness and high impact toughness at the same time, and achieve the effects of increasing hardness, enhancing stability, and improving red hardness
Inactive Publication Date: 2013-05-08
驻马店市三山耐磨材料有限公司
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The invention discloses an abrasion-resistant alloy cast iron material with high hardness for a chute lining plate, and a preparation method thereof. The abrasion-resistant alloy cast iron material comprises the following chemical components in percentage by weight: 2.6-3.0% of C, 0.3-1.0% of Si, 0.5-1.0% of Mn, 21-23% of Cr, 0.8-1.2% of Mo, 0.8-1.2% of Cu, 0.6-0.9% of W, 0.1-0.2% of V, 0.06-0.12% of Ti, 0.001-0.003% of B, 0.04-0.08% of RE, 0.04-0.08% of Y, 0.04-0.08% of Al, less than or equal to 0.06% of S, less than or equal to 0.06% of P and the balance of Fe. According to the abrasion-resistant alloy cast iron material provided by the invention, the hardness of the abrasion-resistant alloy cast iron material is improved by controlling the content of chromium element and the proportion of Cr/C. Noble metal elements such as Mo, W, V, Ti and Cu are added into the cast iron, and through complex use of the noble metal elements, the stability of austenite is enhanced, grains are refined, and the high temperature stability and red hardness of carbides are improved, so that the hardness of the cast iron material provided by the invention is further improved, and the abrasive resistance is correspondingly improved. The average hardness of the alloy cast iron material provided by the invention can reach over HRC63, and the impact toughness aK of the alloy cast iron material can reach 5J/cm<2>.
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