The Disc Bit - A Tool for Hard-Rock Drilling

This paper traces the development of a radically different design of drill bit, describing its concept, laboratory work, and the latest field trials.

If you are looking for more details, kindly visit tungsten carbide tbm cutter blade.

Disc-bit technology is based on the single-rolling disc cutter. This cutter was first used successfully in rock on a tunnel-boring machine in . By the early s, virtually every rock-tunneling machine in the world had evolved from picks, tungsten carbide button cones, or multirow tapered cutters to the single-row disc. By then, practical field experience had demonstrated the superior performance of tunneling machines. Further, the Colorado School of Mines (CSM) began scientific studies and published data comparing the specific energy of excavation of various tools on the basis of full-scale laboratory testing. These studies clearly showed that the single-row disc cutter required less energy than conventional cutters used in roller cones to excavate a given volume of rock. With energy at the cutting face always a limited commodity, a lower energy requirement translated to a higher rate of penetration (ROP).

Not until the mid-s was the concept of the single-rolling disc cutter applied to drill bits. Very small&#;3¼-in. Mini-Disc&#;&#; cutters were evaluated at CSM and found to be extremely efficient and sufficiently robust to be used on drill bits as small as 7&#; in. An evaluation of an 8½-in. disc bit was performed at the Gas Research Inst. (GRI) Catoosa Test Facility in Oklahoma. The U.S. GRI sponsored an effort to develop the concept through laboratory and field testing. Other field trials were sponsored by private and government grants, including the most recent test funded by a joint industry project (JIP) and managed by Petrobras.

Product Description

High Hardness Tungsten Carbide Tips for Tunnel Boring Machines

Product Application: Shield Tunneling Machines
Application Industry: Tunnel Engineering

Product Description:
A tunnel boring machine, commonly known as a shield tunneling machine, is specialized equipment designed for tunnel excavation. This modern marvel integrates optics, mechanics, electronics, hydraulics, sensors, and information technology. It performs various functions such as excavating and cutting through soil, conveying excavated material, assembling tunnel linings, and measuring guidance corrections. The machine encompasses expertise from geology, civil engineering, mechanics, machinery, hydraulics, electrical engineering, control systems, and measurement technologies. Tailoring the design and manufacturing process to different geological conditions is crucial, demanding high reliability. Tunnel boring machines are extensively used in tunnel engineering projects such as subways, railways, highways, municipal infrastructure, and hydropower.

Functionality of the Tunnel Boring Machine Cutter Head:
The cutter head of a tunnel boring machine is the front working component responsible for excavation. It consists of a cutting disc with multiple feeding slots, where tungsten carbide cutter heads are installed for cutting through soil. Typically, a set of cutter heads loads 30-40 or more alloy cutter heads for efficient operation. The specific quantity depends on the usage requirements of the tunnel boring machine equipment. Depending on the soft or hard nature of the soil being cut, hard rock tungsten carbide tools or soft soil tungsten carbide tools can be selected. All types of alloy cutter tools are connected by bolts and can be replaced from the soil chamber behind the cutter head.

Advantages of Tungsten Carbide:
Tungsten carbide, often referred to as the "teeth" of industry, is an excellent choice for wear-resistant tools. Tungsten carbide cutter tools for tunnel boring excel in complex environments during underground excavation where geological compositions are uncertain, such as in tunnel and subway construction. These tools are used in high-power equipment that exerts significant thrust and shear forces. The requirements for the alloy include excellent impact toughness and wear resistance. The dimensions of this tungsten carbide shield cutter head are Φ18Φ16R5*30.

Company Profile

Zhuzhou Sanxin Cemented Carbide Manufacturing Co., Ltd, is engaged in R&D of cemented carbide raw material, processing, selling and aftermarket services.

Sanxin dedicated in inheriting tungsten carbide OEM services and improvement solutions, has a specialized technical team as a solid foundation and obvious superiority to manufacture high-quality tungsten carbide product.

Sanxin was established in ;

Two main factories were built in ; 

Passed ISO : in ;

High-tech Enterprise Identified in ;

Obtained foreign trading license ;

Confirmed as supplier of CLEP in ;

Owned more than 20 patent certificates.

We always carry out "quality and customer first", "Samples available", "punctual delivery", "mutual benefit", "focus on innovation", "service creates value"&#;business policy in the market. Sanxin delivering carbide value.

 

Main Products:

(Manufacturing high precision cemented carbide parts)

    

1

Drill Bits and Cutting Tools:

carbide is widely used in drill bits and cutting tools for petroleum exploration and drilling, including rock drill bits and three-cone bits. Its high hardness and wear resistance make it perform well in geological exploration and underground drilling.

2

Oil Well Components:

hard metal is crucial in manufacturing components for oil wells, such as pump parts, valves, and seals. These components require high wear

3

10 Questions You Should Know About Prime Hot Rolled Alloy Steel Sheet in Coils

Pipeline Cutting Tools:

In pipeline maintenance and repair within the petroleum industry, tungsten carbide is used to manufacture cutting tools for cutting and repairing pipelines.

4

Recommended article:
10 Questions You Should Know about Tungsten Carbide Blanks

For more Solid Cemented Carbide Rodsinformation, please contact us. We will provide professional answers.

Oil Extraction Tools:

Tungsten steel alloy finds applications in oil extraction tools, including parts for lifting pumps and submersible pumps. These tools need to have high strength and wear resistance to withstand high loads and harsh environments.

5

Petroleum Pipeline Repair Tools:

Tungsten carbide is used in the manufacturing of tools for repairing and maintaining petroleum pipelines, ensuring durability and effectiveness.

6

Geological Exploration Tools:

In geological exploration, wolfram carbide is commonly used in the production of tools such as core drill bits and drilling equipment to obtain samples from underground rock formations.

Our Advantages

Advantages:

Cemented carbide wearing parts, also called wolfram carbide (WC) parts, are a commonly used high-end ring in the hardware machinery industry, because of its high hardness, good toughness, superior high and low temperature wear resistance, small adhesion, good corrosion resistance, high thermal conductivity, less friction coefficient, and acid and alkali corrosion resistance does not rust, easy maintenance and other characteristics.

With its good toughness, high temperature resistance and high wear resistance, the service life is 10~50 times longer than the general metal parts.

Features:

100% virgin cemented carbide materials;

Fine-grain tungsten carbide;

Excellent wear, abrasion, corrosion resistance;

High fracture strength and high hardness;

Longer service life;

Varied grades;

Competitive EXW factory price;

Customization service.

If you want to learn more, please visit our website Carbide Round Bar.