| 摘要 |
PURPOSE:To improve wear resistance, strength and toughness by casting a mixture composed of a molten ferrous metal and W carbide powder and forming the composite structure composed of the powder and metal aggregated by a specific gravity difference. CONSTITUTION:A mixture composed of a molten ferrous metal M and W carbide powder P is cast into a casting mold 1 and said powder P is settled. The composite structure region (product forming part) A composed of the ferrous metal M matrix and the W carbide powder P dispersed densely and uniformly in the matrix is formed in the lower part of the mold 1. The product has excellent wear resistance, strength, toughness, etc. and is suitable for a rolling roll, etc.
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