Welding & Joining
Practical guidance on welding, brazing, and joining metals, from filler metal selection and distortion control to post-weld heat treatment and quality inspection.
Welding Carbon Steel: Methods, Filler Metals, and Common Pitfalls
Carbon steel is the most frequently welded material in the world, yet improper technique leads to cracking, porosity, and weak joints. This guide covers process selection, filler metal matching, and how to avoid the most common failures.
Welding Stainless Steel: Avoiding Sensitization and Distortion
Stainless steel welding demands tighter control over heat input and filler selection than carbon steel. Poor technique leads to sensitization, distortion, and loss of the corrosion resistance the material was chosen for.
Aluminum Welding: TIG, MIG, and Friction Stir Techniques
Aluminum's high thermal conductivity, tenacious oxide layer, and susceptibility to porosity make it one of the most challenging metals to weld. This guide covers the techniques and pitfalls specific to aluminum alloy welding.
Dissimilar Metal Joining: Challenges and Solutions
Joining two different metals introduces metallurgical incompatibilities that do not exist in same-metal welding. This guide explains why dissimilar joints fail and the techniques that make them work.
Brazing and Soldering Alloys: When Welding Won't Work
Brazing and soldering join metals at lower temperatures than welding, using filler alloys that melt and flow into the joint by capillary action. These processes are essential when fusion welding would damage the base material or when joining dissimilar metals.
Weld Inspection and Quality Control
A weld is only as reliable as the inspection that confirms its integrity. This guide covers the quality system that surrounds welding, from welder qualification to the inspection methods that verify every joint meets specification.
Post-Weld Heat Treatment: When and How
Post-weld heat treatment reduces residual stresses, tempers hard HAZ microstructures, and restores toughness in welded joints. Knowing when PWHT is mandatory and how to execute it correctly prevents both under-treatment and damage from improper cycles.