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METHOD OF FORMING BODIES FOR EARTH BORING DRILLING TOOLS COMPRISING MOLDING AND SINTERING TECHNIQUES, AND INTERMEDIATE BODIES FOR EARTH-BORING TOOLS FORMED USING SUCH METHOD
METHOD OF FORMING BODIES FOR EARTH BORING DRILLING TOOLS COMPRISING MOLDING AND SINTERING TECHNIQUES, AND INTERMEDIATE BODIES FOR EARTH-BORING TOOLS FORMED USING SUCH METHOD
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机译:包括成型和烧结技术的地钻工具的主体形成方法,以及采用这种方法制成的地钻工具的中间主体
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摘要
Methods of fabricating bodies of earth-boring tools include mechanically injecting a powder mixture into a mold cavity, pressurizing the powder mixture within the mold cavity to form a green body, and sintering the green body to a desired final density to form at least a portion of a body of an earth-boring tool. For example, a green bit body may be injection molded, and the green bit body may be sintered to form at least a portion of a bit body of an earth-boring rotary drill bit. Intermediate structures formed during fabrication of an earth-boring tool include green bodies having a plurality of hard particles, a plurality of matrix particles comprising a metal matrix material, and an organic material that includes a long chain fatty acid derivative. Structures formed using the methods of fabrication are also disclosed.
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