👉 The term "roughener" is a technical term used in the field of engineering and manufacturing. Rougheners are materials that are designed to increase the hardness or strength of a material, typically by reducing its brittleness. They can be used in a variety of applications, such as metalworking, chemical processing, and construction. Rougheners are often used in conjunction with other materials such as carbon steel, aluminum, or stainless steel to achieve desired hardness levels. The process of roughening involves heating