7 Areas of Study for Aspiring Welding Engineers
Welding engineering is a complex field that requires expertise in many different engineering disciplines. The welding engineer must take advanced courses in metallurgy (including welding metallurgy), material science, mechanics of materials, thermodynamics, chemistry and fundamentals of all welding processes. Welding engineers are tasked with many different activities which include but are not limited to: […]
What is a Qualified Welding Procedure?
A qualified welding procedure is a welding procedure that has been proven to produce sound welds after undergoing extensive testing. When using structural welding codes, these tests include both destructive and nondestructive tests. Some of these tests are: Visual examination Macroetch Break test Bend test Ultrasonic inspection Radiographic inspection Hardness test Tensile test The reason […]
Why prequalified welding procedures are exempt from testing
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 […]
Riveting vs. Welding: The Pros and Cons
Many times, especially in steel erection, we need to mix welded and bolted (or riveted) connections. It is very important for the design engineer to know the implications on mixing welds and bolts as it pertains to connection strength, fatigue life, manufacturing costs and the skill level required to make these connections. However, sometimes the […]
Prequalified Welding Procedures Now Available
We are excited to officially release our latest offering: 322 Prequalified Welding Procedure Specifications for Steel Fabricators As we mentioned during our preview last week, these welding procedures have been developed and prequalified in conformance with AWS D1.1/D1.1M:2020 Structural Welding Code – Steel. These prequalified welding procedures were put together for: Business owners and managers […]
Frequently Asked Questions about Prequalified Welding Procedures
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 […]
The Relationship between Heat Input and Weld Size
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 […]
Storing and Re-drying Low Hydrogen Electrodes
One of the dangers we should be aware of when welding high strength steels or even thick sections of low carbon steel is hydrogen induced cracking. Hydrogen induced cracking, also called hydrogen assisted cracking and cold cracking, is caused when three conditions are present. First, we need a susceptible microstructure (base material related). Second, we […]
What is a Prequalified Welding Procedure Specification
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 […]
How to Develop a Welding Procedure Specification
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 […]