One of the advantages of using prequalified welding procedures is that you can save a lot of time and money because they are exempt from testing. This means you don’t need to perform any destructive or nondestructive testing. You simply follow the requirements of AWS D1.1 and you can write a prequalified welding procedure and […]
The following FAQ are related to 322 Prequalified Welding Procedure Specifications for Steel Fabricators. To learn more or to get your copy simply click here Is this a physical book? No. The procedures are provided as digital files (PDF) and are available for immediate download. The user has the option to print the files […]
Heat input is important because it has an effect on cooling rates which in turn can significantly affect the mechanical properties of the weld and heat affected zone. It also plays a role in susceptibility to distortion. High heat input can be beneficial in some cases and detrimental in others. A common misconception is that […]
A prequalified welding procedures specification is a welding procedure that is exempt from the qualification tests required by a code or standard. Not all codes provide the user with the advantage of using prequalified welding procedures. Some that do are: AWS D1.1 Structural Welding Code – Steel AWS D1.3 Structural Welding Code – Sheet […]
The qualification of welding procedures is necessary to ensure that the selected welding parameters can produce sound welds. Qualification typically involves a combination of destructive and nondestructive testing. When a particular code, such as AWS D1.1 or ASME Section IX is used, the code will dictate the type and numbers of tests necessary in order […]
Developing, or writing a welding procedure, goes far beyond setting up amps and volts. It entails the selection of many variables which fall under the 9 required components of welding procedure specifications we discussed last week. Today we look at those 9 components again, but rather than just stating what they contain we explain how […]
Regardless what position you hold, if you work in the welding industry you have heard of welding procedures specifications (WPSs). To some, a welding procedure simply means the selection of a few variables such as amps and volts. To others, these are the documents that govern all welding done in their facility. A […]
Controlling weld quality is not always an easy task. Many fabricators struggle to manage the amount of rework, the discrepancies from one batch of product to the next, and the varying levels of productivity and workmanship amongst their welders. This inability to control weld consistency is not surprising. Welding has more than 20 variables that […]
If you own or work at a job shop you may have noticed an increase in the number of customers that require the use of qualified welding procedures to build their products. Some fabricators are even getting this request from long time customers who never required them in the past. So why is this? The […]
Preheat is necessary in certain carbon and low alloy steel applications to prevent hydrogen induced cracking, also known as cold cracking. Cold cracking susceptibility increases as the amount of carbon in steel and the thickness go up. The higher the carbon content the easier it is for the steel to harden. And, the thicker the […]
