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Home / Products / Tungsten Carbide Inserts for Tunnel Boring Machine
Tungsten Carbide Inserts for Tunnel Boring Machine

Tungsten Carbide Inserts for Tunnel Boring Machine

Our tungsten Carbide Inserts for Tunnel Boring machines have good abrasion resistance, impact toughness, and versatility Good, applicable to various complex working conditions.

Specification Application
Grade Density（g/cm2） Bending strength（Mpa） HRA
GT20CB 14.45-14.55 ≥2300 ≥86.5 With good abrasion resistance, impact toughness and general performance, it is mainly used for drilling medium-hard rock stratum, such as pebbles and moderately weathered rock stratum. It is applicable to shield cutter head for large tunnel boring machine and cutter head for engineering rotary excavation
GT22CA 14.45-14.55 ≥2500 ≥87.5
GT22CB 14.35-14.45 ≥2400 ≥86
GT26CB 14.15-14.25 ≥2500 ≥85.6 With good abrasion resistance, impact toughness and general performance, It is applicable to shield cutter heads for large tunnel boring machines and cutter heads for engineering rotary excavation
GT26CC 14.15-14.25 ≥2300 ≥85.3
GT26CT 14.15-14.25 ≥2000 ≥85
GTQ9CC 14.55-14.65 ≥2000 ≥86.3 With certain abrasion resistance, high impact toughness and good thermal conductivity, it is mainly used for drilling harder rock stratum, such as granite and basalt, and some working conditions with complex geological structure. It is applicable to shield cutter head for large tunnel boring machine and cutter head for engineering rotary excavation
About
Jiangsu Gaite Tungsten Technology Co.,Ltd.

As a China Tungsten Carbide Inserts for Tunnel Boring Machine Manufacturers and OEM/ODM Tungsten Carbide Inserts for Tunnel Boring Machine suppliers, established in 1990, the company is located in the southern suburb of Changzhou CityJiangsu Province, with the Yancheng historical site in its east, Xitaihu Lake in its west, No. 312 National Highway in its north and Yanjiang Highway in its south. Early this century, the company expanded its product line and started its cemented carbide road through the introduction of technical personnel and purchasing a batch of advanced production equipment from The origin of cemented carbide. After these years' accumulation, the products have covered ball teeth, brazing sheets, all kinds of blades, molds, and other special-shaped products to offer high-quality products and services to national and foreign customers. in 2009, the company purchased advanced low-pressure sintering furnaces, advanced TPA presses, and other equipment to improve our product's quantity and quality and start a new round of struggle.
In the meantime, our company can manufacture and design cutters and establish a comprehensive set of quality production management systems by buying the advanced equipment from Germany Walter, a five-axis ganged tool grinder from Australasia ANCA, digital tool settings from Sweden, and other processing apparatus, as well as attract high-quality technical and management personnel with rich production experience. And we also pass the lS09001 ,1S014000 and so on. Our company sets up comprehensive cooperative and supplying relationships with many large machinery enterprises and engine enterprises nationwide; high-precision carbide drill, expanding cutters, reamers, and other processing tools that are manufactured according to German Walter's standard production system not only solves the production needs of these enterprises but also can replace necessary tools for imported equipment to lower processing costs for customers.
"Gaite" focuses on shaping corporation culture,people-oriented, integrity management. And all the workers insist on developing themselves with the company.
Gaite people will always keep going forward to cooperate sincerely with friends of all circles and seek common development by relying on products, a sincere attitude, and comprehensive services!

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Tungsten Carbide Inserts for Tunnel Boring Machine Industry knowledge

How is the wear resistance of tungsten carbide blades for tunnel boring machines?

The wear resistance of tungsten carbide blades for tunnel boring machines (TBMs) is excellent, making them a top choice for this demanding application. Here's a breakdown of why:
High Hardness: Tungsten carbide is one of the hardest materials commercially available, second only to diamond. This inherent hardness allows the blades to resist abrasion from rock during excavation.
Tailored Grades: Manufacturers offer various tungsten carbide grades specifically designed for TBMs. These grades balance hardness with toughness to ensure the blades can withstand the impact forces encountered while cutting through rock.
Minimal Wear: Compared to other materials, tungsten carbide blades experience significantly less wear. This translates to longer blade life, fewer replacements needed, and reduced downtime for the TBM.

However, it's important to remember that wear resistance is not absolute. Here are some factors that can influence it:
Rock Type: The type of rock being excavated plays a major role. Harder and more abrasive rock will naturally wear down blades faster than softer rock.
Operating Conditions: Factors like ground pressure, rotation speed, and thrust force can also affect wear. Higher pressure and faster speeds will generally lead to increased wear.
Overall, tungsten carbide blades offer exceptional wear resistance for TBMs, significantly improving efficiency and reducing downtime compared to other materials.

How do tungsten carbide blades for tunnel boring machines perform at high temperatures?

Tungsten carbide (TC) blades are widely used in tunnel boring machines (TBMs) due to their exceptional hardness, wear resistance, and ability to withstand harsh environments. However, the performance of tungsten carbide blades for tunnel boring machines at high temperatures is a critical consideration for TBM operation.

Factors Affecting TC Blade Performance at High Temperatures:
Grade Selection: The specific grade of TC material significantly impacts its performance at elevated temperatures. Different TC grades exhibit varying levels of hardness, toughness, and heat resistance. Selecting the appropriate grade based on the anticipated temperature range and operating conditions is crucial for optimal blade performance.
Temperature Exposure: While TC blades can withstand considerable heat, prolonged exposure to extreme temperatures can lead to material degradation. The maximum temperature a TC blade can tolerate depends on the specific grade and manufacturing process. Exceeding this threshold can result in reduced hardness, increased wear, and potential cracking or fractures.
Impact Toughness: High temperatures can negatively impact the impact toughness of TC blades. Impact toughness refers to the material's ability to absorb and withstand sudden impacts without breaking. Reduced impact toughness at elevated temperatures makes the blades more susceptible to chipping or breaking when encountering sudden impacts.

Strategies for Enhancing TC Blade Performance at High Temperatures:
Advanced TC Grades: Researchers are continuously developing new TC grades with improved heat resistance and impact toughness. These advancements aim to expand the operational temperature range of TC blades and enhance their durability in harsh environments.
Protective Coatings: Applying protective coatings to TC blades can further enhance their resistance to high temperatures and wear. These coatings can act as a barrier, reducing direct heat exposure and minimizing material degradation.
Optimized Cutting Parameters: Adjusting cutting parameters, such as cutting speed and depth of cut, can also help manage heat generation and prolong TC blade life in high-temperature environments. Careful parameter selection can minimize thermal stress and reduce the risk of blade damage.
Monitoring and Maintenance: Regular monitoring of blade wear and condition is essential for timely replacement and preventive maintenance. This proactive approach can help prevent catastrophic failures and ensure optimal TBM performance.