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    SWT series of high efficiency steel toothed cone bit Jianghan brand
    share  | 20-03-20release views ID：2336
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SWT series of high efficiency steel toothed cone bit Jianghan brand
  • Address：沧州市
    • Q Q：bit2@uqier.comQQ online
    • Email：bit2@uqier.com
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按牙轮数量可分为单牙轮钻头、三牙轮钻头和组装多牙轮钻头。按切削材质可分为钢齿（铣齿）和镶齿牙轮钻头。


牙轮钻头作为一种钻削岩层的工具已被广泛应用，钻头性能的显著改进直接降低钻井成本，尤其是近十年进步更快。使用寿命和钻速两个性能指标，它们能确定钻头影响钻井成本的程度。提高钻头的机械钻速和使用寿命是降低钻井成本的有效途径，有资料证实，钻速的改进比钻头寿命的改进对降低钻井成本的影响更大，其中钻头切削结构的改进是提高钻头的机械钻速更直接的方法。很长时间以来，人们对切削结构的改进主要集中于主切削齿结构，例如在硬质合金齿结构方面，人们先后发明了楔形齿、勺形齿、偏顶勺形齿、等磨损齿等等。人们逐渐认识到保径结构也对钻头机械钻速和寿命有较大影响，尤其在大斜度井和水平井应用的钻头要求具有合理的保径结构，许多新型保径结构被研究开发出来并应用到牙轮钻头上取得了良好的效果。
从钻头厂商和研究机构在三牙轮钻头保径结构研究应用动态可以看出，人们逐渐认识到保径结构对钻头机械钻速和寿命有较大影响，尤其在定向井和水平井应用的钻头影响更大，研究开发的新型钻头保径结构在牙轮钻头应用中取得了好的效果。钻头保径结构从被动保径发展到主动保径，保径材料从低耐磨材料发展到高耐磨的复合材料，钻头保径结构和材料的改进大大提高了钻头性能，进一步提高了钻头的机械钻速和寿命
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