High strength steels are becoming more and more popular in steel construction. Higher strength means we can reduce the thickness of the base material and thus reduce weight. This is very important not just in vehicles but in static structures as well. However, higher strength steels usually bring about a few issues that if not […]
Have you heard of post weld heat treatment (PWHT)? Of course you have. If you are involved in welding you have definitely heard this term. But what is PHWT? When is PWHT required? What temperature should PWHT be done at? Heat treating of materials can be a very complicated subject, but when it comes to […]
Preheat is used when a base material, due to its chemical composition, thickness or level or restraint, is susceptible to cold cracking (hydrogen induced cracking). Knowing what temperature to preheat your base metal is sometimes a complicated matter. You may hear people say “preheat to 300F to be safe.” The reality is that 300F may […]
One of the first steps in analyzing cracks to find their root cause and take corrective action is to categorize the cracks. We categorize cracks based on three elements. Location Direction Timing In today’s article we discuss the importance of crack location when trying to determine what caused it. What follows is an excerpt from […]
A repair procedure is necessary any time there is a defect in welding that must be corrected. The repair procedure is not just a welding procedure specification, but rather a set of instructions and rules on how to repair different types of defects. There is no standard format for a repair procedure, or a standard […]
NOW AVAILABLE! Troubleshoot common welding and welding equipment problems the way welding engineers do. For more information CLICK HERE or the image below. Learn and follow the process used by welding engineers to find the root cause of welding problems and their solutions. This troubleshooting guide goes beyond your typical troubleshooting charts on the back […]
Cracking is a big problem in welding. Many of our customers experience cracking problems on an ongoing basis. Unfortunately, these cracks are not always detected in the shop. Many times cracking occurs once the product is in service. In these cases, cracking can lead to failure and at the very least an upset customer. In […]
Most types of stainless steels have good weldability and can be welded with all arc welding processes (GMAW, FCAW, GTAW, SMAW and SAW). Stainless is used in many different applications for its strength, abrasion resistance and corrosion resistance. Unfortunately, many assume it can be welded just like carbon steel. In fact, this is the first […]
Undercut is a surface discontinuity resulting from melting of the base metal at one or both toes of a weld which remains unfilled by the weld metal. It can also occur at the root of groove welds. Undercut presents two problems. First, it forms a mechanical notch which acts as a stress riser and is […]
