Mining&Tunnelling Cutting Pick

8 month ago

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Zhenjiang Weir Machinery Technology Co., Ltd

2 year

Product details

Rotary drilling rig is a widely used engineering machinery equipment for pile foundation construction, and the drill bit is an important component of rotary drilling rig construction. According to different construction requirements and soil conditions, the commonly used types of drill bits for rotary drilling rigs also vary. This article will introduce several types of drill bits commonly used in rotary drilling rig construction, and briefly explain their characteristics and scope of use.

1、 Common types of drill bits used in rotary drilling rig construction

1. Short spiral drill bit

Short spiral drill bit is one of the most commonly used drill bits in rotary drilling rig construction. It is mainly suitable for formations with relatively soft soil, shallow drilling depth, and small aperture. The spiral blades of a short spiral drill bit are relatively short, so the agitation of the soil layer during rotation is minimal, which can reduce the risk of hole wall collapse. This type of drill bit is suitable for pile foundation construction under general soil conditions, such as clay, sand, and soft rock.

2. Core spiral drill bit

Core spiral drill bits are mainly used for drilling in hard formations such as rock layers and sandstones. Compared with short spiral drill bits, core spiral drill bits have longer spiral blades, which can better break hard soil layers and improve drilling efficiency during rotation. At the same time, the core of the spiral drill bit is relatively large, which is convenient for core extraction and testing. This type of drill bit is suitable for pile foundation construction with complex geological conditions that require precise acquisition of geological information.

3. Augmenting spiral drill bit

Spiral drilling bits are mainly used for pile foundation construction with larger aperture and shallower depth. This type of drill bit has a larger diameter and can quickly form larger holes, making it suitable for construction projects that require a large number of pile foundations, such as bridges, highways, etc. The advantages of drilling spiral drill bits are fast drilling speed, good hole stability, and the ability to improve construction efficiency.

4. Rock socketed drill bit

Rock socketed drill bit is a type of drill bit suitable for hard rock socketing. Its structure is similar to a core spiral drill bit, but the diameter of the rock socketed cylinder drill bit is smaller, making it suitable for small-diameter pile foundation construction. In hard rock formations, rock socketed drill bits can provide better cutting effects and crushing capabilities, improving drilling efficiency in hard rock formations.

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Zhenjiang Weir Machinery Technology Co., Ltd

Audited supplier

2 year

Main Product: Trencher blades , Milling machine blades, Round shank bits, Coal Mining Bits, Rotary cutting pick, Cement milling cutter

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