Wear-resistant alloy pipes feature varying thicknesses of wear-resistant layers, typically ranging from 3 to 120mm, resulting in different hardness levels. Compared to ordinary alloy wear-resistant pipes or other materials, alloy wear-resistant steel pipes exhibit significantly higher wear resistance, far surpassing that achieved through spray welding and thermal spraying. The wear-resistant layer of these pipes is metallurgically bonded to the substrate, ensuring high bond strength.
Even under impact, the wear-resistant layer can absorb energy during the impact process, preventing detachment. This capability, suitable for conditions involving intense vibration and impact, is unattainable by cast wear-resistant materials and ceramic materials.
While ordinary galvanized steel pipes can undergo heat treatment or surface carburizing, nitriding, etc., to enhance surface strength, excessively high hardness in such wear-resistant alloy pipes may lead to rapid flaking, adversely affecting wear resistance. In contrast, some softer materials may exhibit better wear resistance.
The wear resistance of alloy wear-resistant pipes primarily stems from their combination of hard particles and a soft matrix. During the wear process, some detached materials blend into the soft matrix, minimizing surface damage.
If the hardness of the pipe substrate structure is also high, abrasive particles or other substances falling onto it will grind against each other during movement, accelerating the destruction of the substrate structure.
For galvanized steel pipes, hardness is just one parameter among many, and their chemical composition also plays a role. However, as a crucial parameter for assessing pipe performance, it deserves particular attention.
