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CN102985197A 形成钻地工具的至少一部分的方法，以及通过此类方法形成的制品 无效 - 撤回

形成钻地工具的至少一部分的方法，以及通过此类方法形成的制品
摘要：
形成钻地工具的至少一部分的方法包括在模腔中提供至少一个插入件，在该模腔中提供颗粒物质，将金属与该硬质材料熔融以形成熔融组合物，并浇铸该熔融组合物。其它方法包括用具有不同于该模具组成的组成的涂覆材料涂布模腔的至少一个表面，将金属与该硬质材料熔融以形成熔融组合物，并浇铸该熔融组合物。包含钻地工具的至少一部分的制品。该制品包括至少一个插入件和包括金属相与硬质材料相的凝固的共晶或近共晶组合物。其它制品包括包含金属相与硬质材料相的凝固的共晶或近共晶组合物和与该凝固的共晶或近共晶组合物接触的涂覆材料。
摘要（英）：

Methods of forming at least a portion of an earth-boring tool include providing at least one insert in a mold cavity, providing particulate matter in the mold cavity, melting a metal and the hard material to form a molten composition, and casting the molten composition. Other methods include coating at least one surface of a mold cavity with a coating material having a composition differing from a composition of the mold, melting a metal and a hard material to form a molten composition, and casting the molten composition. Articles comprising at least a portion of an earth-boring tool include at least one insert and a solidified eutectic or near-eutectic composition including a metal phase and a hard material phase.; Other articles include a solidified eutectic or near-eutectic composition including a metal phase and a hard material phase and a coating material in contact with the solidified eutectic or near-eutectic composition.

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