Introduction To The Characteristics Of Dth Drill Pipe Suppliers

• Posted by drilling kaiqiu 10 January 2022 - Filed in Business - #dth drill pipe suppliers  #dth hammer suppliers  - 28 views

  The choice of dth hammer suppliers product shape depends on factors such as rock properties and the purpose of the drill. The following will explain the characteristics of the lip surface of several common drill bits.

   

  1. Rectangular lip surface: Also known as flat bottom shape, it is often used for impregnating drill bits. It is easy to process: it has a smaller working area, so the required drilling pressure is smaller, so that a higher drilling speed can be obtained under the same drilling parameters. However, when it goes down to the bottom of the hole, there is a running-in process, that is, it starts to advance slowly, and only after grinding into a micro-arc, does it advance at a normal speed. Secondly, its stability is poor, and it is easy to cause the drilling to bend. This lip is commonly used for drilling into medium hard and medium abrasive rock formations.

   

  1. Arc-shaped lip surface: It can shorten the initial grinding time and is often used in hard, medium-hard and medium-abrasive rock formations.

   

  1. Concentric circular serrated lip: also known as pointed ring groove, diamonds are mainly distributed in the tooth part. The particle size used on the inside and outside is larger to ensure the diameter of the drill bit. The tooth-shaped lip surface can create a multi-free surface hole bottom, so that the drill bit can perform a combination of grinding and shearing on the rock to obtain relatively coarse-grained rock powder, which is helpful for the diamond to emerge and improve the ROP. Since the axial pressure required by the drill bit is small, it also has a better anti-slope effect. The serrated lip drill bit is suitable for drilling hard, dense and weakly abrasive rock formations.
  2. 
     Ladder-shaped lip surface: there are one, two and three steps, usually used for rope coring bits and single-tube thick-walled bits. This kind of bit has better stability when drilling; more free surfaces and better effect when crushing rock, suitable for drilling medium-hard rock layers. At present, it is used in hard and weak abrasive rock formations, and good results are also obtained.

   

  1. Conical lip surface: dth drill pipe supplierspoint out that this drill has good stability and guidance at the bottom of the hole, which is conducive to anti-slope. Commonly used in corded coring bits. The tapered lip surface can also be divided into inner cone, outer cone and double cone.