首页> 外国专利> USING THERMALLY-STABLE DIAMOND OR CBN COMPACTS AS TIPS FOR¹ROTARY DRILLS

USING THERMALLY-STABLE DIAMOND OR CBN COMPACTS AS TIPS FOR¹ROTARY DRILLS

机译:将热稳定的金刚石或CBN压块用作“旋转钻头”的提示

摘要

The present invention is directed to rotary drill bits and blanks which retain polycrystalline diamond or CBN compacts, but which do not suffer from disadvantages attendant by prior drill designs. The inventive rotary drill bit has a slot within the head thereof which slot has brazed therein with a brazing alloy preferably having a liquidus greater than 700 DEG C, an unsupported thermally-stable polycrystalline diamond or CBN compact. The drill bit is made in another aspect of the invention by forming a slot in the head of the rotary drill and then brazing an unsupported thermally-stable polycrystalline diamond or CBN compact therein with a brazing alloy preferably having a liquidus greater than 700 DEG C. For present purposes, polycrystalline diamond and CBN compacts are termed "thermally stable" by being able to withstand a temperature of 1200 DEG C in a vacuum without any significant structural degradation of the compact occurring.
机译:本发明涉及保持多晶金刚石或CBN压块的旋转钻头和坯料,但是它们不遭受现有钻头设计带来的缺点。本发明的旋转钻头在其头部内具有一个狭槽,该狭槽在其中用优选地具有大于700℃的液相线的钎焊合金,无支撑的热稳定的多晶金刚石或CBN压块钎焊在其中。在本发明的另一方面中,通过在旋转钻头的头部中形成狭槽,然后在其中与优选地具有大于700℃的液相线的钎焊合金钎焊未支撑的热稳定多晶金刚石或CBN压块,来制造钻头。为了目前的目的,多晶金刚石和CBN压块被称为“热稳定”的,因为它能够在真空中承受1200℃的温度而不会发生压块的任何明显的结构退化。

著录项

  • 公开/公告号IE913092A1

    专利类型

  • 公开/公告日1992-03-11

    原文格式PDF

  • 申请/专利权人 GENERAL ELECTRIC COMPANY;

    申请/专利号IE19910003092

  • 发明设计人

    申请日1991-09-03

  • 分类号B23P5/00;

  • 国家 IE

  • 入库时间 2022-08-22 05:35:20

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