(1) Thermal expansion: Kyanite minerals are converted into a mixture of mullite and kyanite during heating. During this transformation, the minerals expand with volume and form a good ashhole needle network, which expands in volume. The rate is 16-18%. (2) Stability: The stability of refractory materials produced by kyanite minerals is 1.5 times higher than that of clay refractories. Kyanite refractory bricks have a 43% lower loss than clay bricks and 150-200 furnaces longer than clay bricks. (3) High refractoriness: the general clay-like refractory has a refractoriness of 1670-1770 ° C, while the kyanite refractory material is usually greater than 1790 ° C and the highest is greater than 1850 ° C. (4) Irreversibility: Calcination of kyanite minerals into mullite is an irreversible transformation. It is stable below 1810 °C. Therefore, the mullite refractory material has the characteristics of stable volume at high temperature, low expansion ratio, strong chemical corrosion resistance, high mechanical strength and strong thermal shock resistance. Tubular tungsten carbide welding rods are a type of welding consumable used for hardfacing applications. They are made by filling a tubular steel rod with a mixture of tungsten carbide particles and a binder material. Welding Rod,Welding Rod Price,Best Welding Rods,Tungsten Welding Rod Luoyang Golden Egret Geotools Co., Ltd , https://www.xtclasercladding.com
The tungsten carbide particles provide exceptional hardness and wear resistance, making them suitable for applications where the welded surface needs to withstand high levels of abrasion, erosion, or impact. The binder material helps to hold the tungsten carbide particles together and facilitate the welding process.
Tubular tungsten carbide welding rods are typically used in industries such as mining, construction, oil and gas, and agriculture, where equipment and machinery are subjected to harsh operating conditions. They can be used for hardfacing various components, such as drill bits, crusher hammers, wear plates, and cutting tools.
The welding process for tubular tungsten carbide rods is similar to other types of welding, such as shielded metal arc welding (SMAW) or gas tungsten arc welding (GTAW). The rods are typically welded using a high heat source, such as an electric arc, to melt the rod and create a strong bond with the base metal.
Overall, tubular tungsten carbide welding rods are a popular choice for hardfacing applications due to their exceptional hardness and wear resistance properties. They help extend the lifespan of equipment and machinery, reducing maintenance costs and downtime.