Tungsten

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Toughness of Tungsten Cemented Carbide Balls 22

Tungsten cemented carbide balls are spherical materials made by sintering powder metallurgy with tungsten carbide (WC) as the hard phase and cobalt (Co), nickel (Ni), or molybdenum (Mo) as the binder phase. Their toughness performance is influenced by the composition, processing, and microstructure, requiring a comprehensive analysis from the perspectives of impact toughness and fracture toughness. I. Toughness Performance Indicators of Tungsten Cemented Carbide Balls 1. Impact Toughness Impact toughness reflects a material’s ability to resist damage under impact loads…

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Strength of Tungsten Cemented Carbide Balls 16

Due to their high hardness, high wear resistance, high compressive strength, and excellent bending resistance, tungsten cemented carbide balls are widely used in key applications such as high-load precision bearings, oilfield valve ball seals, and high-temperature mold components. Their strength characteristics stem from the combined effects of material composition, microstructure, and process control, as analyzed below: I. The Determining Role of Material Composition and Microstructure on Strength 1. Strengthening Effect of Tungsten Carbide (WC) Grains WC grains are the “skeleton”…

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Mechanical Properties of Tungsten Cemented Carbide Balls 18

Tungsten cemented carbide balls are characterized by high hardness, high compressive strength, moderate flexural strength, low impact toughness, and excellent wear and corrosion resistance. This comprehensive combination of mechanical properties makes them an ideal material for high-load, harsh working conditions. 1. Hardness: Ultra-High Hardness, Excellent Wear Resistance Value Range: Tungsten cemented carbide balls typically have a hardness of ≥90.5 HRA (Rockwell A Scale), with some products reaching HRC 80-90 (Vickers hardness approximately 1800-2200 HV), far exceeding high-speed steel (HRA 82-87)…

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Oxidation Resistance of Tungsten Cemented Carbide Balls 18

The excellent oxidation resistance of tungsten cemented carbide balls is primarily due to their material properties and optimized composition. 1. Material Properties Lay the Foundation for Oxidation Resistance Tungsten cemented carbide balls are manufactured through a powder metallurgy process, using a high-hardness ceramic phase such as tungsten carbide (WC) as a skeleton and a metal such as cobalt (Co) as a binder phase. This structure provides the following oxidation resistance advantages: 1. High-Temperature Stability The WC ceramic phase has a…

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Chemical Stability of Tungsten Cemented Carbide Balls 17

The excellent chemical stability of tungsten cemented carbide balls stems primarily from their unique material composition and powder metallurgy process, as demonstrated below: 1. The Material Basis for the Chemical Stability of Tungsten Cemented Carbide Balls Tungsten cemented carbide balls are based on high-hardness, refractory metal carbides (such as tungsten carbide (WC) and titanium carbide (TiC). These carbides are inherently extremely chemically inert and, at room temperature, do not react with common acids and bases such as water, hydrochloric acid,…

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Test Methods for Impact Resistance of Tungsten Cemented Carbide Balls 15

The impact resistance test of tungsten cemented carbide balls is an important method to evaluate their ability to resist damage when subjected to external force impact, and is usually used to test the strength, toughness and durability of tungsten cemented carbide balls. The test methods for impact resistance of tungsten cemented carbide balls mainly include the following: 1. Drop ball impact test: Equipment: Drop ball impact tester Principle: A steel ball or tungsten cemented carbide ball of specified mass is…

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Impact Resistance of Tungsten Cemented Carbide Balls 17

I. Impact Resistance of Tungsten Cemented Carbide Balls Tungsten cemented carbide balls are made from a carbide matrix such as tungsten carbide (WC) or titanium carbide (TiC), sintered with a binder such as cobalt (Co), nickel (Ni), or molybdenum (Mo). Their impact resistance is primarily reflected in the following aspects: 1. Synergistic Effect of High Hardness and High Density Tungsten cemented carbide balls typically have a hardness of ≥90.5 HRA and a density of approximately 14.9 g/cm3. Their high density…

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Thermal Stability and Applications of Tungsten Cemented Carbide Balls 15

Tungsten cemented carbide balls are high-performance powder metallurgy products. They are primarily composed of tungsten carbide (WC), a high-hardness, refractory metal, with cobalt (Co), nickel (Ni), or molybdenum (Mo) as a binder, and are sintered in a vacuum furnace or hydrogen reduction furnace. Common series include YG, YN, YT, and YW. This material is highly valued for its excellent hardness, wear resistance, and corrosion resistance, while thermal stability is one of its core advantages in high-temperature environments. I. Thermal Stability…

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Fatigue Resistance of Tungsten Cemented Carbide Balls 13

Tungsten cemented carbide balls exhibit excellent fatigue resistance, which is significantly affected by composition, processing, and operating conditions. A high binder phase content, nickel-chromium additions, and optimized processing significantly enhance fatigue resistance, making them suitable for long-term stable operation under high-load, complex environments. I. Advantages of Tungsten Cemented Carbide Balls Fatigue Resistance 1. High Fatigue Stability: Tungsten cemented carbide balls are made from a matrix of micron-sized metal carbides such as tungsten carbide (WC) and titanium carbide (TiC), sintered with…

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Compressive Strength of Tungsten Cemented Carbide Balls 15

The compressive strength of tungsten cemented carbide balls is their ability to resist failure under compressive loads and is a key indicator for evaluating their performance. 1. Material Properties of tungsten Cemented Carbide Balls Carbide is primarily composed of tungsten carbide (WC) and a metal binder such as cobalt (Co). Its compressive strength is generally much higher than its tensile strength. Compressive strength generally ranges from 2000-4000 MPa, depending on the composition ratio, grain size, and manufacturing process. For example:…

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