Why do conveyor belt cleaners use tungsten carbide scrapers?

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1. Introduction: The invisible challenges of belt cleaning

In mines, cement plants, coal transportation and other scenarios, the cleaning efficiency of belt conveyors directly affects the equipment life and operating costs. Traditional scrapers often wear out quickly, do not clean thoroughly, and even scratch the belt due to the high hardness of the material and harsh working conditions. The secondary cleaning scraper made of tungsten carbide has become the preferred solution in the global heavy industry field due to its ultra-high hardness, corrosion resistance and precise fitting design.

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2. Technical advantages of tungsten carbide scrapers

Tungsten carbide (WC) is the “king of superhard alloys” in the modern industrial field, and its performance far exceeds that of traditional steel and ceramic materials. The secondary belt cleaning scraper made of tungsten carbide has the following revolutionary advantages:

Extreme wear resistance:

The Rockwell hardness of tungsten carbide is as high as HRA 89-93, which is 3 times that of high-speed steel, and the compressive strength is 6500MPa. Under the same working conditions, the service life is more than 100 times that of traditional steel scrapers.

Temperature adaptability:

It can work stably in the extreme temperature range of -40°C to +200°C (special heat-resistant models can reach +120°C), and the thermal conductivity of 79 W/(m·K) is significantly better than steel, effectively avoiding seal failure caused by high temperature deformation.

Energy saving and consumption reduction:

reduce belt wear, save energy by 10%-15%, efficient cleaning reduces material residue, belt running resistance decreases, and motor power consumption is significantly reduced.

Economic breakthrough:

Although the initial cost is 30% higher than polyurethane, the maintenance cycle is extended to 2-3 years, and the overall operating cost is reduced by 58%.

3. Tungsten carbide vs other materials: data comparison at a glance

Index	Tungsten carbide scraper	Steel scraper	Polyurethane scraper
Hardness (HRA)	89-93	60-65	75-85
Compressive strength(MPa)	Replacement cycle(months)	400-550	25-40
Application temperature (℃)	-40~+200	12-18	-30~+70
Replacement cycle(months)	24-36	6-8	12-18

Conclusion:

Tungsten carbide leads in wear resistance and impact resistance, and is especially suitable for heavy industrial scenarios such as mining and metallurgy.

4. Industry application cases: Evidence-driven reasons for selection

Case : High-speed belt system for Australian iron ore

Challenge: Belt width 2000mm, belt speed 5m/s, transport of hematite causes ceramic scrapers to break every month.
Solution: Install tungsten carbide scraper HM-XR6, segmented structure with M20 pressure adjustment screw.
Results: Continuous operation for 12 months without deformation, annual maintenance cost savings of $12,000.

For more questions, please feel free to contact us, and the professional team will customize exclusive mining Conveyor Belt Cleaning solutions for you.

ZZ Old Craftsman,

ten years of focus on cemented carbide manufacturing, professional knowledge to give you a better solution.

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