We frequently receive questions regarding the preheating, welding, and post-weld heat treatment of ASTM A514 and other quenched and tempered steels. If you’re working with these materials, the following guidelines will be extremely helpful for welding this steel and avoid cracking or other problems. Metallurgy, Uses, and Welding Challenges of ASTM A514 ASTM A514, often […]
We are excited to officially release our latest collection: 280 Prequalified Welding Procedure Specifications for Stainless Steel As we mentioned during our preview last week, these welding procedures have been developed and prequalified in conformance with AWS D1.6/D1.6M Structural Welding Code – Stainless Steel. ORDER HERE! ORDER HERE! These welding procedures were put together for: […]
When a weld fails in the field, the consequences can be catastrophic. Our experience as welding engineering consultants has shown us that such failures often expose deeper issues within a company’s welding operations. These situations can lead to fears of additional failures in other products or structures, potential harm or fatalities, litigation, and even bankruptcy. […]
Before getting into today’s topic we wanted to make you aware of a new resource we are creating and which will be available soon. Prequalified Welding Procedures for Steel Fabricators will provide a list of prequalified procedures written in conformance with AWS D1.1 Structural Welding Code which can be used in the fabrication of carbon […]
Have you ever wondered if there is one type of welding discontinuity or defect that is the absolute worst one to have? Have you heard that cracks are by the far the worst? Or do you think others like lack of fusion, undercut or overlap can be worse? The reality is that there isn’t a […]
Developing welding procedures requires an understanding of all the different essential variables as well as the process of qualifying or prequalifying such procedures.
Developing a welding procedure is the responsibility of the welding engineer. Most fabricators don’t have a welding engineer on staff and require that those with the most welding knowledge develop the WPS. Many times this falls in the hands of the certified welding inspector (CWI).
One of the most common questions we get around the topic of welding procedure qualification is regarding the differences between qualified and prequalified welding procedures. The main question is typically: is one better than the other? Before we answer this question, let’s first discuss the need for qualified, or prequalified, welding procedures. If you have […]
If you look at any of the structural welding codes you’ll notice that contact-tip-to-work-distance (CTTWD) is a variable which must be listed in welding procedure specifications (WPSs). However, it is not an essential variable, meaning that changes to CTTWD of any amount do not require requalification. This can seem puzzling to some, especially those […]
Who determines what size a weld should be? This is a question we ask many of our customers. And we never seem to get a straight answer. In a perfect world, the design engineer should specify all weld sizes and clearly communicate this through welding symbols on the print. But that is hardly ever the […]
