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    • 35. 发明申请
    • SUBTERRANEAN CUTTING TOOL STRUCTURE TAILORED TO INTENDED USE
    • 为特定用途量身定制的地下切割工具结构
    • WO2012047406A1
    • 2012-04-12
    • PCT/US2011/049423
    • 2011-08-26
    • BAKER HUGHES INCORPORATEDLYNDE, Gerald, D.
    • LYNDE, Gerald, D.
    • E21B29/00
    • E21B10/43E21B29/00
    • A mill cutting structure is differently configured in three zones. Those zones are the center, the outer edge and in between. At the center has highly wear resistant material that has good temperature bond strength and high impact resistance. The outer periphery can have a material that is highly resistant to wear and impact. In between can be inserts such as used in the Metal Muncher® mills using sintered carbide shapes that resist tracking and create a chipping rather than a grinding action. The shapes should have high edge retention capability and shapes such as a double sided pyramid can be used. The wear patterns of prior designs are addressed to allow longer and faster milling of the fish.
    • 一个磨机切割结构在三个区域中配置不同。 这些区域是中心,外边缘和中间。 中心具有高耐磨材料,具有良好的温度粘合强度和高抗冲击性。 外周边可以具有高度耐磨损和抗冲击的材料。 在两者之间可以插入诸如用于金属穿孔机 使用烧结碳化物形状的磨机可抵抗跟踪并产生碎屑而不是磨削作用。 这些形状应该具有较高的边缘保持能力,并且可以使用诸如双面金字塔形状。 现有设计的磨损模式旨在允许更长和更快速地研磨鱼。