construction tools and picks PDC Bits

Product Introduction of  PDC Bit

I. Product Definition and Structure

Polycrystalline Diamond Compact (PDC) anchor bolt drill bits are specialized drill bits that utilize PDC as the cutting teeth, designed specifically for drilling anchor bolt support holes in coal mines, mines, water conservancy projects, power generation, transportation sectors, and more. Their structural feature lies in directly welding the PDC onto the recessed pockets pre-set on the drill bit body, forming efficient cutting edges.

II. Product Features and Advantages

1. High Wear Resistance: PDC, formed by sintering diamond powder and cemented carbide under high temperature and pressure, exhibits exceptional wear resistance, significantly extending the drill bit's lifespan.

2. High Impact Toughness: In addition to its wear resistance, PDC also boasts excellent impact toughness, enabling it to adapt to complex and variable geological conditions.
3. High Drilling Efficiency: Due to the superior performance of PDC, the drill bit maintains a high cutting efficiency during drilling, resulting in a notable increase in drilling speed.
4. Long Lifespan: Under the same rock formation conditions, the lifespan of a PDC anchor bolt drill bit is 10-30 times longer than that of a conventional alloy drill bit, effectively reducing the frequency and cost of drill bit replacements.
5. Wide Application Range: This drill bit is suitable for drilling in soft to hard geological formations, including coal seams, dam construction, and tunnel construction with anchor bolt mesh support.

III. Product Types and Specifications

PDC Drill Bits come in various types and specifications based on their structure and usage requirements. Common types include two-wing symmetrical, two-wing asymmetrical, and two-wing connected-rib designs. In terms of specifications, the drill bit diameters range widely, such as Φ25, Φ27, Φ28, Φ30, Φ32, Φ36, Φ42, etc., to accommodate different drilling hole diameters. Additionally, drill bits can be categorized into half-piece and full-piece types based on the shape of the PDC, as well as low-abrasion-ratio and high-abrasion-ratio pieces based on their abrasion resistance.

IV. Product Application and Effects

PDC Anchor Drill Bits have found widespread application in drilling anchor bolt support holes in coal mines, mines, water conservancy projects, power generation, transportation sectors, and more. Their efficient and durable characteristics ensure a smooth and rapid drilling process, with fewer downhole accidents and superior wellbore quality. Moreover, the long lifespan of the drill bits, coupled with the elimination of the need for resharpening, reduces labor intensity for workers, saves time, and lowers costs.

V. Industry Standards and Quality Control

The production and use of PDC anchor bolt drill bits must adhere to certain industry standards, such as the Chinese coal industry standard "Polycrystalline Diamond Compact Anchor Bolt Drill Bits for Coal Mines" (Standard No.: MT/T 984-2006). This standard provides detailed regulations on the drill bit's type, model, basic parameters, technical requirements, test methods, inspection rules, and more, ensuring that the drill bit's quality and performance meet the required standards. Additionally, manufacturers must strictly control key aspects such as raw material quality and welding processes during production to ensure the overall performance and lifespan of the drill bits.