Rob Knoll, Author at American Welding Academy | Insights & ArticlesPost-weld heat treatment relieves residual stress and reduces hardness in welded steel. Learn the science of preheat, PWHT methods, and hydrogen control.
Rob Knoll, Author at American Welding Academy | Insights & ArticlesHeavy equipment repair welding keeps machinery running. Learn material identification, gouging, preheat rules, and hardfacing for buckets and booms.
Rob Knoll, Author at American Welding Academy | Insights & ArticlesStructural welding and bolting work together on commercial job sites. Learn how AWS D1.1 certifications, field welds, and bolted joints connect steel.
Rob Knoll, Author at American Welding Academy | Insights & ArticlesAluminum welding needs special tools, cleaner prep, and tighter heat control. Learn the key differences from steel fabrication.
